doc: renamed project

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/arm2d/lv_draw_arm2d.mk

@@ -0,0 +1,6 @@
+CSRCS += lv_gpu_arm2d.c
+
+DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/arm2d
+VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/arm2d
+
+CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/arm2d"

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/arm2d/lv_gpu_arm2d.h

@@ -0,0 +1,51 @@
+/**
+ * @file lv_gpu_arm2d.h
+ *
+ */
+
+#ifndef LV_GPU_ARM2D_H
+#define LV_GPU_ARM2D_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../misc/lv_color.h"
+#include "../../hal/lv_hal_disp.h"
+#include "../sw/lv_draw_sw.h"
+
+#if LV_USE_GPU_ARM2D
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+typedef lv_draw_sw_ctx_t lv_draw_arm2d_ctx_t;
+
+struct _lv_disp_drv_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void lv_draw_arm2d_ctx_init(struct _lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx);
+
+void lv_draw_arm2d_ctx_deinit(struct _lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif  /*LV_USE_GPU_ARM2D*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_GPU_ARM2D_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw.c

@@ -0,0 +1,53 @@
+/**
+ * @file lv_draw.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw.h"
+#include "sw/lv_draw_sw.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_init(void)
+{
+    /*Nothing to init now*/
+}
+
+void lv_draw_wait_for_finish(lv_draw_ctx_t * draw_ctx)
+{
+    if(draw_ctx->wait_for_finish) draw_ctx->wait_for_finish(draw_ctx);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw.h

@@ -0,0 +1,218 @@
+/**
+ * @file lv_draw.h
+ *
+ */
+
+#ifndef LV_DRAW_H
+#define LV_DRAW_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_conf_internal.h"
+
+#include "../misc/lv_style.h"
+#include "../misc/lv_txt.h"
+#include "lv_img_decoder.h"
+#include "lv_img_cache.h"
+
+#include "lv_draw_rect.h"
+#include "lv_draw_label.h"
+#include "lv_draw_img.h"
+#include "lv_draw_line.h"
+#include "lv_draw_triangle.h"
+#include "lv_draw_arc.h"
+#include "lv_draw_mask.h"
+#include "lv_draw_transform.h"
+#include "lv_draw_layer.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    void * user_data;
+} lv_draw_mask_t;
+
+typedef struct _lv_draw_layer_ctx_t {
+    lv_area_t area_full;
+    lv_area_t area_act;
+    lv_coord_t max_row_with_alpha;
+    lv_coord_t max_row_with_no_alpha;
+    void * buf;
+    struct {
+        const lv_area_t * clip_area;
+        lv_area_t * buf_area;
+        void * buf;
+        bool screen_transp;
+    } original;
+} lv_draw_layer_ctx_t;
+
+typedef struct _lv_draw_ctx_t  {
+    /**
+     *  Pointer to a buffer to draw into
+     */
+    void * buf;
+
+    /**
+     * The position and size of `buf` (absolute coordinates)
+     */
+    lv_area_t * buf_area;
+
+    /**
+     * The current clip area with absolute coordinates, always the same or smaller than `buf_area`
+     */
+    const lv_area_t * clip_area;
+
+
+    void (*draw_rect)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
+
+    void (*draw_arc)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center,
+                     uint16_t radius,  uint16_t start_angle, uint16_t end_angle);
+
+    void (*draw_img_decoded)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * dsc,
+                             const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t color_format);
+
+    lv_res_t (*draw_img)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * draw_dsc,
+                         const lv_area_t * coords, const void * src);
+
+    void (*draw_letter)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,  const lv_point_t * pos_p,
+                        uint32_t letter);
+
+
+    void (*draw_line)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc, const lv_point_t * point1,
+                      const lv_point_t * point2);
+
+
+    void (*draw_polygon)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc,
+                         const lv_point_t * points, uint16_t point_cnt);
+
+
+    /**
+     * Get an area of a transformed image (zoomed and/or rotated)
+     * @param draw_ctx      pointer to a draw context
+     * @param dest_area     get this area of the result image. It assumes that the original image is placed to the 0;0 position.
+     * @param src_buf       the source image
+     * @param src_w         width of the source image in [px]
+     * @param src_h         height of the source image in [px]
+     * @param src_stride    the stride in [px].
+     * @param draw_dsc      an `lv_draw_img_dsc_t` descriptor containing the transformation parameters
+     * @param cf            the color format of `src_buf`
+     * @param cbuf          place the colors of the pixels on `dest_area` here in RGB format
+     * @param abuf          place the opacity of the pixels on `dest_area` here
+     */
+    void (*draw_transform)(struct _lv_draw_ctx_t * draw_ctx, const lv_area_t * dest_area, const void * src_buf,
+                           lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
+                           const lv_draw_img_dsc_t * draw_dsc, lv_img_cf_t cf, lv_color_t * cbuf, lv_opa_t * abuf);
+
+    /**
+     * Replace the buffer with a rect without decoration like radius or borders
+     */
+    void (*draw_bg)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc, const lv_area_t * coords);
+
+    /**
+     * Wait until all background operations are finished. (E.g. GPU operations)
+     */
+    void (*wait_for_finish)(struct _lv_draw_ctx_t * draw_ctx);
+
+    /**
+     * Copy an area from buffer to an other
+     * @param draw_ctx      pointer to a draw context
+     * @param dest_buf      copy the buffer into this buffer
+     * @param dest_stride   the width of the dest_buf in pixels
+     * @param dest_area     the destination area
+     * @param src_buf       copy from this buffer
+     * @param src_stride    the width of src_buf in pixels
+     * @param src_area      the source area.
+     *
+     * @note dest_area and src_area must have the same width and height
+     *       but can have different x and y position.
+     * @note dest_area and src_area must be clipped to the real dimensions of the buffers
+     */
+    void (*buffer_copy)(struct _lv_draw_ctx_t * draw_ctx, void * dest_buf, lv_coord_t dest_stride,
+                        const lv_area_t * dest_area,
+                        void * src_buf, lv_coord_t src_stride, const lv_area_t * src_area);
+
+    /**
+     * Initialize a new layer context.
+     * The original buffer and area data are already saved from `draw_ctx` to `layer_ctx`
+     * @param draw_ctx      pointer to the current draw context
+     * @param layer_area    the coordinates of the layer
+     * @param flags         OR-ed flags from @lv_draw_layer_flags_t
+     * @return              pointer to the layer context, or NULL on error
+     */
+    struct _lv_draw_layer_ctx_t * (*layer_init)(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
+                                                lv_draw_layer_flags_t flags);
+
+    /**
+     * Adjust the layer_ctx and/or draw_ctx based on the `layer_ctx->area_act`.
+     * It's called only if flags has `LV_DRAW_LAYER_FLAG_CAN_SUBDIVIDE`
+     * @param draw_ctx      pointer to the current draw context
+     * @param layer_ctx     pointer to a layer context
+     * @param flags         OR-ed flags from @lv_draw_layer_flags_t
+     */
+    void (*layer_adjust)(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
+                         lv_draw_layer_flags_t flags);
+
+    /**
+     * Blend a rendered layer to `layer_ctx->area_act`
+     * @param draw_ctx      pointer to the current draw context
+     * @param layer_ctx     pointer to a layer context
+     * @param draw_dsc      pointer to an image draw descriptor
+     */
+    void (*layer_blend)(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
+                        const lv_draw_img_dsc_t * draw_dsc);
+
+    /**
+     * Destroy a layer context. The original buffer and area data of the `draw_ctx` will be restored
+     * and the `layer_ctx` itself will be freed automatically.
+     * @param draw_ctx      pointer to the current draw context
+     * @param layer_ctx     pointer to a layer context
+     */
+    void (*layer_destroy)(struct _lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx);
+
+    /**
+     * Size of a layer context in bytes.
+     */
+    size_t layer_instance_size;
+
+#if LV_USE_USER_DATA
+    void * user_data;
+#endif
+
+} lv_draw_ctx_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void lv_draw_init(void);
+
+
+void lv_draw_wait_for_finish(lv_draw_ctx_t * draw_ctx);
+
+/**********************
+ *  GLOBAL VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   POST INCLUDES
+ *********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw.mk

@@ -0,0 +1,25 @@
+CSRCS += lv_draw_arc.c
+CSRCS += lv_draw.c
+CSRCS += lv_draw_img.c
+CSRCS += lv_draw_label.c
+CSRCS += lv_draw_line.c
+CSRCS += lv_draw_mask.c
+CSRCS += lv_draw_rect.c
+CSRCS += lv_draw_transform.c
+CSRCS += lv_draw_layer.c
+CSRCS += lv_draw_triangle.c
+CSRCS += lv_img_buf.c
+CSRCS += lv_img_cache.c
+CSRCS += lv_img_decoder.c
+
+DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw
+VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw
+
+CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw"
+
+include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/arm2d/lv_draw_arm2d.mk
+include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp/lv_draw_nxp.mk
+include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/sdl/lv_draw_sdl.mk
+include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/stm32_dma2d/lv_draw_stm32_dma2d.mk
+include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/sw/lv_draw_sw.mk
+include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/swm341_dma2d/lv_draw_swm341_dma2d.mk

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_arc.c

@@ -0,0 +1,152 @@
+/**
+ * @file lv_draw_arc.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw.h"
+#include "lv_draw_arc.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_arc_dsc_init(lv_draw_arc_dsc_t * dsc)
+{
+    lv_memset_00(dsc, sizeof(lv_draw_arc_dsc_t));
+    dsc->width = 1;
+    dsc->opa = LV_OPA_COVER;
+    dsc->color = lv_color_black();
+}
+
+void lv_draw_arc(lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center, uint16_t radius,
+                 uint16_t start_angle, uint16_t end_angle)
+{
+    if(dsc->opa <= LV_OPA_MIN) return;
+    if(dsc->width == 0) return;
+    if(start_angle == end_angle) return;
+
+    draw_ctx->draw_arc(draw_ctx, dsc, center, radius, start_angle, end_angle);
+
+    //    const lv_draw_backend_t * backend = lv_draw_backend_get();
+    //    backend->draw_arc(center_x, center_y, radius, start_angle, end_angle, clip_area, dsc);
+}
+
+void lv_draw_arc_get_area(lv_coord_t x, lv_coord_t y, uint16_t radius,  uint16_t start_angle, uint16_t end_angle,
+                          lv_coord_t w, bool rounded, lv_area_t * area)
+{
+    lv_coord_t rout = radius;
+
+    /*Special case: full arc invalidation */
+    if(end_angle == start_angle + 360) {
+        area->x1 = x - rout;
+        area->y1 = y - rout;
+        area->x2 = x + rout;
+        area->y2 = y + rout;
+        return;
+    }
+
+    if(start_angle > 360) start_angle -= 360;
+    if(end_angle > 360) end_angle -= 360;
+
+    lv_coord_t rin = radius - w;
+    lv_coord_t extra_area = rounded ? w / 2 + 1 : 0;
+    uint8_t start_quarter = start_angle / 90;
+    uint8_t end_quarter = end_angle / 90;
+
+    /*360 deg still counts as quarter 3 (360 / 90 would be 4)*/
+    if(start_quarter == 4) start_quarter = 3;
+    if(end_quarter == 4) end_quarter = 3;
+
+    if(start_quarter == end_quarter && start_angle <= end_angle) {
+        if(start_quarter == 0) {
+            area->y1 = y + ((lv_trigo_sin(start_angle) * rin) >> LV_TRIGO_SHIFT) - extra_area;
+            area->x2 = x + ((lv_trigo_sin(start_angle + 90) * rout) >> LV_TRIGO_SHIFT) + extra_area;
+
+            area->y2 = y + ((lv_trigo_sin(end_angle) * rout) >> LV_TRIGO_SHIFT) + extra_area;
+            area->x1 = x + ((lv_trigo_sin(end_angle + 90) * rin) >> LV_TRIGO_SHIFT) - extra_area;
+        }
+        else if(start_quarter == 1) {
+            area->y2 = y + ((lv_trigo_sin(start_angle) * rout) >> LV_TRIGO_SHIFT) + extra_area;
+            area->x2 = x + ((lv_trigo_sin(start_angle + 90) * rin) >> LV_TRIGO_SHIFT) + extra_area;
+
+            area->y1 = y + ((lv_trigo_sin(end_angle) * rin) >> LV_TRIGO_SHIFT) - extra_area;
+            area->x1 = x + ((lv_trigo_sin(end_angle + 90) * rout) >> LV_TRIGO_SHIFT) - extra_area;
+        }
+        else if(start_quarter == 2) {
+            area->x1 = x + ((lv_trigo_sin(start_angle + 90) * rout) >> LV_TRIGO_SHIFT) - extra_area;
+            area->y2 = y + ((lv_trigo_sin(start_angle) * rin) >> LV_TRIGO_SHIFT) + extra_area;
+
+            area->y1 = y + ((lv_trigo_sin(end_angle) * rout) >> LV_TRIGO_SHIFT) - extra_area;
+            area->x2 = x + ((lv_trigo_sin(end_angle + 90) * rin) >> LV_TRIGO_SHIFT) + extra_area;
+        }
+        else if(start_quarter == 3) {
+            area->x1 = x + ((lv_trigo_sin(start_angle + 90) * rin) >> LV_TRIGO_SHIFT) - extra_area;
+            area->y1 = y + ((lv_trigo_sin(start_angle) * rout) >> LV_TRIGO_SHIFT) - extra_area;
+
+            area->x2 = x + ((lv_trigo_sin(end_angle + 90) * rout) >> LV_TRIGO_SHIFT) + extra_area;
+            area->y2 = y + ((lv_trigo_sin(end_angle) * rin) >> LV_TRIGO_SHIFT) + extra_area;
+        }
+    }
+    else if(start_quarter == 0 && end_quarter == 1) {
+        area->x1 = x + ((lv_trigo_sin(end_angle + 90) * rout) >> LV_TRIGO_SHIFT) - extra_area;
+        area->y1 = y + ((LV_MIN(lv_trigo_sin(end_angle),
+                                lv_trigo_sin(start_angle))  * rin) >> LV_TRIGO_SHIFT) - extra_area;
+        area->x2 = x + ((lv_trigo_sin(start_angle + 90) * rout) >> LV_TRIGO_SHIFT) + extra_area;
+        area->y2 = y + rout + extra_area;
+    }
+    else if(start_quarter == 1 && end_quarter == 2) {
+        area->x1 = x - rout - extra_area;
+        area->y1 = y + ((lv_trigo_sin(end_angle) * rout) >> LV_TRIGO_SHIFT) - extra_area;
+        area->x2 = x + ((LV_MAX(lv_trigo_sin(start_angle + 90),
+                                lv_trigo_sin(end_angle + 90)) * rin) >> LV_TRIGO_SHIFT) + extra_area;
+        area->y2 = y + ((lv_trigo_sin(start_angle) * rout) >> LV_TRIGO_SHIFT) + extra_area;
+    }
+    else if(start_quarter == 2 && end_quarter == 3) {
+        area->x1 = x + ((lv_trigo_sin(start_angle + 90) * rout) >> LV_TRIGO_SHIFT) - extra_area;
+        area->y1 = y - rout - extra_area;
+        area->x2 = x + ((lv_trigo_sin(end_angle + 90) * rout) >> LV_TRIGO_SHIFT) + extra_area;
+        area->y2 = y + (LV_MAX(lv_trigo_sin(end_angle) * rin,
+                               lv_trigo_sin(start_angle) * rin) >> LV_TRIGO_SHIFT) + extra_area;
+    }
+    else if(start_quarter == 3 && end_quarter == 0) {
+        area->x1 = x + ((LV_MIN(lv_trigo_sin(end_angle + 90),
+                                lv_trigo_sin(start_angle + 90)) * rin) >> LV_TRIGO_SHIFT) - extra_area;
+        area->y1 = y + ((lv_trigo_sin(start_angle) * rout) >> LV_TRIGO_SHIFT) - extra_area;
+        area->x2 = x + rout + extra_area;
+        area->y2 = y + ((lv_trigo_sin(end_angle) * rout) >> LV_TRIGO_SHIFT) + extra_area;
+
+    }
+    else {
+        area->x1 = x - rout;
+        area->y1 = y - rout;
+        area->x2 = x + rout;
+        area->y2 = y + rout;
+    }
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_arc.h

@@ -0,0 +1,83 @@
+/**
+ * @file lv_draw_arc.h
+ *
+ */
+
+#ifndef LV_DRAW_ARC_H
+#define LV_DRAW_ARC_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_conf_internal.h"
+#include "../misc/lv_color.h"
+#include "../misc/lv_area.h"
+#include "../misc/lv_style.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+typedef struct {
+    lv_color_t color;
+    lv_coord_t width;
+    uint16_t start_angle;
+    uint16_t end_angle;
+    const void * img_src;
+    lv_opa_t opa;
+    lv_blend_mode_t blend_mode  : 2;
+    uint8_t rounded : 1;
+} lv_draw_arc_dsc_t;
+
+struct _lv_draw_ctx_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void lv_draw_arc_dsc_init(lv_draw_arc_dsc_t * dsc);
+
+/**
+ * Draw an arc. (Can draw pie too with great thickness.)
+ * @param center_x      the x coordinate of the center of the arc
+ * @param center_y      the y coordinate of the center of the arc
+ * @param radius        the radius of the arc
+ * @param mask          the arc will be drawn only in this mask
+ * @param start_angle   the start angle of the arc (0 deg on the bottom, 90 deg on the right)
+ * @param end_angle     the end angle of the arc
+ * @param clip_area     the arc will be drawn only in this area
+ * @param dsc           pointer to an initialized `lv_draw_line_dsc_t` variable
+ */
+void lv_draw_arc(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center,
+                 uint16_t radius,  uint16_t start_angle, uint16_t end_angle);
+
+/**
+ * Get an area the should be invalidated when the arcs angle changed between start_angle and end_ange
+ * @param x             the x coordinate of the center of the arc
+ * @param y             the y coordinate of the center of the arc
+ * @param radius        the radius of the arc
+ * @param start_angle   the start angle of the arc (0 deg on the bottom, 90 deg on the right)
+ * @param end_angle     the end angle of the arc
+ * @param w             width of the arc
+ * @param rounded       true: the arc is rounded
+ * @param area          store the area to invalidate here
+ */
+void lv_draw_arc_get_area(lv_coord_t x, lv_coord_t y, uint16_t radius,  uint16_t start_angle, uint16_t end_angle,
+                          lv_coord_t w, bool rounded, lv_area_t * area);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_ARC_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_img.c

@@ -0,0 +1,364 @@
+/**
+ * @file lv_draw_img.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_img.h"
+#include "lv_img_cache.h"
+#include "../hal/lv_hal_disp.h"
+#include "../misc/lv_log.h"
+#include "../core/lv_refr.h"
+#include "../misc/lv_mem.h"
+#include "../misc/lv_math.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+LV_ATTRIBUTE_FAST_MEM static lv_res_t decode_and_draw(lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * draw_dsc,
+                                                      const lv_area_t * coords, const void * src);
+
+static void show_error(lv_draw_ctx_t * draw_ctx, const lv_area_t * coords, const char * msg);
+static void draw_cleanup(_lv_img_cache_entry_t * cache);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_img_dsc_init(lv_draw_img_dsc_t * dsc)
+{
+    lv_memset_00(dsc, sizeof(lv_draw_img_dsc_t));
+    dsc->recolor = lv_color_black();
+    dsc->opa = LV_OPA_COVER;
+    dsc->zoom = LV_IMG_ZOOM_NONE;
+    dsc->antialias = LV_COLOR_DEPTH > 8 ? 1 : 0;
+}
+
+/**
+ * Draw an image
+ * @param coords the coordinates of the image
+ * @param mask the image will be drawn only in this area
+ * @param src pointer to a lv_color_t array which contains the pixels of the image
+ * @param dsc pointer to an initialized `lv_draw_img_dsc_t` variable
+ */
+void lv_draw_img(lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * dsc, const lv_area_t * coords, const void * src)
+{
+    if(src == NULL) {
+        LV_LOG_WARN("Image draw: src is NULL");
+        show_error(draw_ctx, coords, "No\ndata");
+        return;
+    }
+
+    if(dsc->opa <= LV_OPA_MIN) return;
+
+    lv_res_t res;
+    if(draw_ctx->draw_img) {
+        res = draw_ctx->draw_img(draw_ctx, dsc, coords, src);
+    }
+    else {
+        res = decode_and_draw(draw_ctx, dsc, coords, src);
+    }
+
+    if(res == LV_RES_INV) {
+        LV_LOG_WARN("Image draw error");
+        show_error(draw_ctx, coords, "No\ndata");
+        return;
+    }
+}
+
+/**
+ * Get the pixel size of a color format in bits
+ * @param cf a color format (`LV_IMG_CF_...`)
+ * @return the pixel size in bits
+ */
+uint8_t lv_img_cf_get_px_size(lv_img_cf_t cf)
+{
+    uint8_t px_size = 0;
+
+    switch(cf) {
+        case LV_IMG_CF_UNKNOWN:
+        case LV_IMG_CF_RAW:
+            px_size = 0;
+            break;
+        case LV_IMG_CF_TRUE_COLOR:
+        case LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED:
+            px_size = LV_COLOR_SIZE;
+            break;
+        case LV_IMG_CF_TRUE_COLOR_ALPHA:
+            px_size = LV_IMG_PX_SIZE_ALPHA_BYTE << 3;
+            break;
+        case LV_IMG_CF_INDEXED_1BIT:
+        case LV_IMG_CF_ALPHA_1BIT:
+            px_size = 1;
+            break;
+        case LV_IMG_CF_INDEXED_2BIT:
+        case LV_IMG_CF_ALPHA_2BIT:
+            px_size = 2;
+            break;
+        case LV_IMG_CF_INDEXED_4BIT:
+        case LV_IMG_CF_ALPHA_4BIT:
+            px_size = 4;
+            break;
+        case LV_IMG_CF_INDEXED_8BIT:
+        case LV_IMG_CF_ALPHA_8BIT:
+            px_size = 8;
+            break;
+        default:
+            px_size = 0;
+            break;
+    }
+
+    return px_size;
+}
+
+/**
+ * Check if a color format is chroma keyed or not
+ * @param cf a color format (`LV_IMG_CF_...`)
+ * @return true: chroma keyed; false: not chroma keyed
+ */
+bool lv_img_cf_is_chroma_keyed(lv_img_cf_t cf)
+{
+    bool is_chroma_keyed = false;
+
+    switch(cf) {
+        case LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED:
+        case LV_IMG_CF_RAW_CHROMA_KEYED:
+            is_chroma_keyed = true;
+            break;
+
+        default:
+            is_chroma_keyed = false;
+            break;
+    }
+
+    return is_chroma_keyed;
+}
+
+/**
+ * Check if a color format has alpha channel or not
+ * @param cf a color format (`LV_IMG_CF_...`)
+ * @return true: has alpha channel; false: doesn't have alpha channel
+ */
+bool lv_img_cf_has_alpha(lv_img_cf_t cf)
+{
+    bool has_alpha = false;
+
+    switch(cf) {
+        case LV_IMG_CF_TRUE_COLOR_ALPHA:
+        case LV_IMG_CF_RAW_ALPHA:
+        case LV_IMG_CF_INDEXED_1BIT:
+        case LV_IMG_CF_INDEXED_2BIT:
+        case LV_IMG_CF_INDEXED_4BIT:
+        case LV_IMG_CF_INDEXED_8BIT:
+        case LV_IMG_CF_ALPHA_1BIT:
+        case LV_IMG_CF_ALPHA_2BIT:
+        case LV_IMG_CF_ALPHA_4BIT:
+        case LV_IMG_CF_ALPHA_8BIT:
+            has_alpha = true;
+            break;
+        default:
+            has_alpha = false;
+            break;
+    }
+
+    return has_alpha;
+}
+
+/**
+ * Get the type of an image source
+ * @param src pointer to an image source:
+ *  - pointer to an 'lv_img_t' variable (image stored internally and compiled into the code)
+ *  - a path to a file (e.g. "S:/folder/image.bin")
+ *  - or a symbol (e.g. LV_SYMBOL_CLOSE)
+ * @return type of the image source LV_IMG_SRC_VARIABLE/FILE/SYMBOL/UNKNOWN
+ */
+lv_img_src_t lv_img_src_get_type(const void * src)
+{
+    lv_img_src_t img_src_type = LV_IMG_SRC_UNKNOWN;
+
+    if(src == NULL) return img_src_type;
+    const uint8_t * u8_p = src;
+
+    /*The first byte shows the type of the image source*/
+    if(u8_p[0] >= 0x20 && u8_p[0] <= 0x7F) {
+        img_src_type = LV_IMG_SRC_FILE; /*If it's an ASCII character then it's file name*/
+    }
+    else if(u8_p[0] >= 0x80) {
+        img_src_type = LV_IMG_SRC_SYMBOL; /*Symbols begins after 0x7F*/
+    }
+    else {
+        img_src_type = LV_IMG_SRC_VARIABLE; /*`lv_img_dsc_t` is draw to the first byte < 0x20*/
+    }
+
+    if(LV_IMG_SRC_UNKNOWN == img_src_type) {
+        LV_LOG_WARN("lv_img_src_get_type: unknown image type");
+    }
+
+    return img_src_type;
+}
+
+void lv_draw_img_decoded(lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * dsc,
+                         const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t color_format)
+{
+    if(draw_ctx->draw_img_decoded == NULL) return;
+
+    draw_ctx->draw_img_decoded(draw_ctx, dsc, coords, map_p, color_format);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+LV_ATTRIBUTE_FAST_MEM static lv_res_t decode_and_draw(lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * draw_dsc,
+                                                      const lv_area_t * coords, const void * src)
+{
+    if(draw_dsc->opa <= LV_OPA_MIN) return LV_RES_OK;
+
+    _lv_img_cache_entry_t * cdsc = _lv_img_cache_open(src, draw_dsc->recolor, draw_dsc->frame_id);
+
+    if(cdsc == NULL) return LV_RES_INV;
+
+    lv_img_cf_t cf;
+    if(lv_img_cf_is_chroma_keyed(cdsc->dec_dsc.header.cf)) cf = LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED;
+    else if(LV_IMG_CF_ALPHA_8BIT == cdsc->dec_dsc.header.cf) cf = LV_IMG_CF_ALPHA_8BIT;
+    else if(LV_IMG_CF_RGB565A8 == cdsc->dec_dsc.header.cf) cf = LV_IMG_CF_RGB565A8;
+    else if(lv_img_cf_has_alpha(cdsc->dec_dsc.header.cf)) cf = LV_IMG_CF_TRUE_COLOR_ALPHA;
+    else cf = LV_IMG_CF_TRUE_COLOR;
+
+    if(cf == LV_IMG_CF_ALPHA_8BIT) {
+        if(draw_dsc->angle || draw_dsc->zoom != LV_IMG_ZOOM_NONE) {
+            /* resume normal method */
+            cf = LV_IMG_CF_TRUE_COLOR_ALPHA;
+            cdsc->dec_dsc.img_data = NULL;
+        }
+    }
+
+    if(cdsc->dec_dsc.error_msg != NULL) {
+        LV_LOG_WARN("Image draw error");
+
+        show_error(draw_ctx, coords, cdsc->dec_dsc.error_msg);
+    }
+    /*The decoder could open the image and gave the entire uncompressed image.
+     *Just draw it!*/
+    else if(cdsc->dec_dsc.img_data) {
+        lv_area_t map_area_rot;
+        lv_area_copy(&map_area_rot, coords);
+        if(draw_dsc->angle || draw_dsc->zoom != LV_IMG_ZOOM_NONE) {
+            int32_t w = lv_area_get_width(coords);
+            int32_t h = lv_area_get_height(coords);
+
+            _lv_img_buf_get_transformed_area(&map_area_rot, w, h, draw_dsc->angle, draw_dsc->zoom, &draw_dsc->pivot);
+
+            map_area_rot.x1 += coords->x1;
+            map_area_rot.y1 += coords->y1;
+            map_area_rot.x2 += coords->x1;
+            map_area_rot.y2 += coords->y1;
+        }
+
+        lv_area_t clip_com; /*Common area of mask and coords*/
+        bool union_ok;
+        union_ok = _lv_area_intersect(&clip_com, draw_ctx->clip_area, &map_area_rot);
+        /*Out of mask. There is nothing to draw so the image is drawn successfully.*/
+        if(union_ok == false) {
+            draw_cleanup(cdsc);
+            return LV_RES_OK;
+        }
+
+        const lv_area_t * clip_area_ori = draw_ctx->clip_area;
+        draw_ctx->clip_area = &clip_com;
+        lv_draw_img_decoded(draw_ctx, draw_dsc, coords, cdsc->dec_dsc.img_data, cf);
+        draw_ctx->clip_area = clip_area_ori;
+    }
+    /*The whole uncompressed image is not available. Try to read it line-by-line*/
+    else {
+        lv_area_t mask_com; /*Common area of mask and coords*/
+        bool union_ok;
+        union_ok = _lv_area_intersect(&mask_com, draw_ctx->clip_area, coords);
+        /*Out of mask. There is nothing to draw so the image is drawn successfully.*/
+        if(union_ok == false) {
+            draw_cleanup(cdsc);
+            return LV_RES_OK;
+        }
+
+        int32_t width = lv_area_get_width(&mask_com);
+
+        uint8_t  * buf = lv_mem_buf_get(lv_area_get_width(&mask_com) *
+                                        LV_IMG_PX_SIZE_ALPHA_BYTE);  /*+1 because of the possible alpha byte*/
+
+        const lv_area_t * clip_area_ori = draw_ctx->clip_area;
+        lv_area_t line;
+        lv_area_copy(&line, &mask_com);
+        lv_area_set_height(&line, 1);
+        int32_t x = mask_com.x1 - coords->x1;
+        int32_t y = mask_com.y1 - coords->y1;
+        int32_t row;
+        lv_res_t read_res;
+        for(row = mask_com.y1; row <= mask_com.y2; row++) {
+            lv_area_t mask_line;
+            union_ok = _lv_area_intersect(&mask_line, clip_area_ori, &line);
+            if(union_ok == false) continue;
+
+            read_res = lv_img_decoder_read_line(&cdsc->dec_dsc, x, y, width, buf);
+            if(read_res != LV_RES_OK) {
+                lv_img_decoder_close(&cdsc->dec_dsc);
+                LV_LOG_WARN("Image draw can't read the line");
+                lv_mem_buf_release(buf);
+                draw_cleanup(cdsc);
+                draw_ctx->clip_area = clip_area_ori;
+                return LV_RES_INV;
+            }
+
+            draw_ctx->clip_area = &mask_line;
+            lv_draw_img_decoded(draw_ctx, draw_dsc, &line, buf, cf);
+            line.y1++;
+            line.y2++;
+            y++;
+        }
+        draw_ctx->clip_area = clip_area_ori;
+        lv_mem_buf_release(buf);
+    }
+
+    draw_cleanup(cdsc);
+    return LV_RES_OK;
+}
+
+
+static void show_error(lv_draw_ctx_t * draw_ctx, const lv_area_t * coords, const char * msg)
+{
+    lv_draw_rect_dsc_t rect_dsc;
+    lv_draw_rect_dsc_init(&rect_dsc);
+    rect_dsc.bg_color = lv_color_white();
+    lv_draw_rect(draw_ctx, &rect_dsc, coords);
+
+    lv_draw_label_dsc_t label_dsc;
+    lv_draw_label_dsc_init(&label_dsc);
+    lv_draw_label(draw_ctx, &label_dsc, coords, msg, NULL);
+}
+
+static void draw_cleanup(_lv_img_cache_entry_t * cache)
+{
+    /*Automatically close images with no caching*/
+#if LV_IMG_CACHE_DEF_SIZE == 0
+    lv_img_decoder_close(&cache->dec_dsc);
+#else
+    LV_UNUSED(cache);
+#endif
+}

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_img.h

@@ -0,0 +1,104 @@
+/**
+ * @file lv_draw_img.h
+ *
+ */
+
+#ifndef LV_DRAW_IMG_H
+#define LV_DRAW_IMG_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_img_decoder.h"
+#include "lv_img_buf.h"
+#include "../misc/lv_style.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+
+    int16_t angle;
+    uint16_t zoom;
+    lv_point_t pivot;
+
+    lv_color_t recolor;
+    lv_opa_t recolor_opa;
+
+    lv_opa_t opa;
+    lv_blend_mode_t blend_mode : 4;
+
+    int32_t frame_id;
+    uint8_t antialias       : 1;
+} lv_draw_img_dsc_t;
+
+struct _lv_draw_ctx_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void lv_draw_img_dsc_init(lv_draw_img_dsc_t * dsc);
+/**
+ * Draw an image
+ * @param coords the coordinates of the image
+ * @param mask the image will be drawn only in this area
+ * @param src pointer to a lv_color_t array which contains the pixels of the image
+ * @param dsc pointer to an initialized `lv_draw_img_dsc_t` variable
+ */
+void lv_draw_img(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * dsc, const lv_area_t * coords,
+                 const void * src);
+
+
+void lv_draw_img_decoded(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * dsc,
+                         const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t color_format);
+
+/**
+ * Get the type of an image source
+ * @param src pointer to an image source:
+ *  - pointer to an 'lv_img_t' variable (image stored internally and compiled into the code)
+ *  - a path to a file (e.g. "S:/folder/image.bin")
+ *  - or a symbol (e.g. LV_SYMBOL_CLOSE)
+ * @return type of the image source LV_IMG_SRC_VARIABLE/FILE/SYMBOL/UNKNOWN
+ */
+lv_img_src_t lv_img_src_get_type(const void * src);
+
+/**
+ * Get the pixel size of a color format in bits
+ * @param cf a color format (`LV_IMG_CF_...`)
+ * @return the pixel size in bits
+ */
+uint8_t lv_img_cf_get_px_size(lv_img_cf_t cf);
+
+/**
+ * Check if a color format is chroma keyed or not
+ * @param cf a color format (`LV_IMG_CF_...`)
+ * @return true: chroma keyed; false: not chroma keyed
+ */
+bool lv_img_cf_is_chroma_keyed(lv_img_cf_t cf);
+
+/**
+ * Check if a color format has alpha channel or not
+ * @param cf a color format (`LV_IMG_CF_...`)
+ * @return true: has alpha channel; false: doesn't have alpha channel
+ */
+bool lv_img_cf_has_alpha(lv_img_cf_t cf);
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_IMG_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_label.c

@@ -0,0 +1,417 @@
+/**
+ * @file lv_draw_label.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw.h"
+#include "lv_draw_label.h"
+#include "../misc/lv_math.h"
+#include "../hal/lv_hal_disp.h"
+#include "../core/lv_refr.h"
+#include "../misc/lv_bidi.h"
+#include "../misc/lv_assert.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define LABEL_RECOLOR_PAR_LENGTH 6
+#define LV_LABEL_HINT_UPDATE_TH 1024 /*Update the "hint" if the label's y coordinates have changed more then this*/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+enum {
+    CMD_STATE_WAIT,
+    CMD_STATE_PAR,
+    CMD_STATE_IN,
+};
+typedef uint8_t cmd_state_t;
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static uint8_t hex_char_to_num(char hex);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *  GLOBAL VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_label_dsc_init(lv_draw_label_dsc_t * dsc)
+{
+    lv_memset_00(dsc, sizeof(lv_draw_label_dsc_t));
+    dsc->opa = LV_OPA_COVER;
+    dsc->color = lv_color_black();
+    dsc->font = LV_FONT_DEFAULT;
+    dsc->sel_start = LV_DRAW_LABEL_NO_TXT_SEL;
+    dsc->sel_end = LV_DRAW_LABEL_NO_TXT_SEL;
+    dsc->sel_color = lv_color_black();
+    dsc->sel_bg_color = lv_palette_main(LV_PALETTE_BLUE);
+    dsc->bidi_dir = LV_BASE_DIR_LTR;
+}
+
+/**
+ * Write a text
+ * @param coords coordinates of the label
+ * @param mask the label will be drawn only in this area
+ * @param dsc pointer to draw descriptor
+ * @param txt `\0` terminated text to write
+ * @param hint pointer to a `lv_draw_label_hint_t` variable.
+ * It is managed by the draw to speed up the drawing of very long texts (thousands of lines).
+ */
+LV_ATTRIBUTE_FAST_MEM void lv_draw_label(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,
+                                         const lv_area_t * coords, const char * txt, lv_draw_label_hint_t * hint)
+{
+    if(dsc->opa <= LV_OPA_MIN) return;
+    if(dsc->font == NULL) {
+        LV_LOG_WARN("dsc->font == NULL");
+        return;
+    }
+
+    if(draw_ctx->draw_letter == NULL) {
+        LV_LOG_WARN("draw->draw_letter == NULL (there is no function to draw letters)");
+        return;
+    }
+
+    lv_draw_label_dsc_t dsc_mod = *dsc;
+
+    const lv_font_t * font = dsc->font;
+    int32_t w;
+
+    /*No need to waste processor time if string is empty*/
+    if(txt == NULL || txt[0] == '\0')
+        return;
+
+    lv_area_t clipped_area;
+    bool clip_ok = _lv_area_intersect(&clipped_area, coords, draw_ctx->clip_area);
+    if(!clip_ok) return;
+
+    lv_text_align_t align = dsc->align;
+    lv_base_dir_t base_dir = dsc->bidi_dir;
+
+    lv_bidi_calculate_align(&align, &base_dir, txt);
+
+    if((dsc->flag & LV_TEXT_FLAG_EXPAND) == 0) {
+        /*Normally use the label's width as width*/
+        w = lv_area_get_width(coords);
+    }
+    else {
+        /*If EXPAND is enabled then not limit the text's width to the object's width*/
+        lv_point_t p;
+        lv_txt_get_size(&p, txt, dsc->font, dsc->letter_space, dsc->line_space, LV_COORD_MAX,
+                        dsc->flag);
+        w = p.x;
+    }
+
+    int32_t line_height_font = lv_font_get_line_height(font);
+    int32_t line_height = line_height_font + dsc->line_space;
+
+    /*Init variables for the first line*/
+    int32_t line_width = 0;
+    lv_point_t pos;
+    pos.x = coords->x1;
+    pos.y = coords->y1;
+
+    int32_t x_ofs = 0;
+    int32_t y_ofs = 0;
+    x_ofs = dsc->ofs_x;
+    y_ofs = dsc->ofs_y;
+    pos.y += y_ofs;
+
+    uint32_t line_start     = 0;
+    int32_t last_line_start = -1;
+
+    /*Check the hint to use the cached info*/
+    if(hint && y_ofs == 0 && coords->y1 < 0) {
+        /*If the label changed too much recalculate the hint.*/
+        if(LV_ABS(hint->coord_y - coords->y1) > LV_LABEL_HINT_UPDATE_TH - 2 * line_height) {
+            hint->line_start = -1;
+        }
+        last_line_start = hint->line_start;
+    }
+
+    /*Use the hint if it's valid*/
+    if(hint && last_line_start >= 0) {
+        line_start = last_line_start;
+        pos.y += hint->y;
+    }
+
+    uint32_t line_end = line_start + _lv_txt_get_next_line(&txt[line_start], font, dsc->letter_space, w, NULL, dsc->flag);
+
+    /*Go the first visible line*/
+    while(pos.y + line_height_font < draw_ctx->clip_area->y1) {
+        /*Go to next line*/
+        line_start = line_end;
+        line_end += _lv_txt_get_next_line(&txt[line_start], font, dsc->letter_space, w, NULL, dsc->flag);
+        pos.y += line_height;
+
+        /*Save at the threshold coordinate*/
+        if(hint && pos.y >= -LV_LABEL_HINT_UPDATE_TH && hint->line_start < 0) {
+            hint->line_start = line_start;
+            hint->y          = pos.y - coords->y1;
+            hint->coord_y    = coords->y1;
+        }
+
+        if(txt[line_start] == '\0') return;
+    }
+
+    /*Align to middle*/
+    if(align == LV_TEXT_ALIGN_CENTER) {
+        line_width = lv_txt_get_width(&txt[line_start], line_end - line_start, font, dsc->letter_space, dsc->flag);
+
+        pos.x += (lv_area_get_width(coords) - line_width) / 2;
+
+    }
+    /*Align to the right*/
+    else if(align == LV_TEXT_ALIGN_RIGHT) {
+        line_width = lv_txt_get_width(&txt[line_start], line_end - line_start, font, dsc->letter_space, dsc->flag);
+        pos.x += lv_area_get_width(coords) - line_width;
+    }
+    uint32_t sel_start = dsc->sel_start;
+    uint32_t sel_end = dsc->sel_end;
+    if(sel_start > sel_end) {
+        uint32_t tmp = sel_start;
+        sel_start = sel_end;
+        sel_end = tmp;
+    }
+    lv_draw_line_dsc_t line_dsc;
+
+    if((dsc->decor & LV_TEXT_DECOR_UNDERLINE) || (dsc->decor & LV_TEXT_DECOR_STRIKETHROUGH)) {
+        lv_draw_line_dsc_init(&line_dsc);
+        line_dsc.color = dsc->color;
+        line_dsc.width = font->underline_thickness ? font->underline_thickness : 1;
+        line_dsc.opa = dsc->opa;
+        line_dsc.blend_mode = dsc->blend_mode;
+    }
+
+    cmd_state_t cmd_state = CMD_STATE_WAIT;
+    uint32_t i;
+    uint32_t par_start = 0;
+    lv_color_t recolor  = lv_color_black();
+    lv_color_t color = lv_color_black();
+    int32_t letter_w;
+
+    lv_draw_rect_dsc_t draw_dsc_sel;
+    lv_draw_rect_dsc_init(&draw_dsc_sel);
+    draw_dsc_sel.bg_color = dsc->sel_bg_color;
+
+    int32_t pos_x_start = pos.x;
+    /*Write out all lines*/
+    while(txt[line_start] != '\0') {
+        pos.x += x_ofs;
+
+        /*Write all letter of a line*/
+        cmd_state = CMD_STATE_WAIT;
+        i         = 0;
+#if LV_USE_BIDI
+        char * bidi_txt = lv_mem_buf_get(line_end - line_start + 1);
+        _lv_bidi_process_paragraph(txt + line_start, bidi_txt, line_end - line_start, base_dir, NULL, 0);
+#else
+        const char * bidi_txt = txt + line_start;
+#endif
+
+        while(i < line_end - line_start) {
+            uint32_t logical_char_pos = 0;
+            if(sel_start != 0xFFFF && sel_end != 0xFFFF) {
+#if LV_USE_BIDI
+                logical_char_pos = _lv_txt_encoded_get_char_id(txt, line_start);
+                uint32_t t = _lv_txt_encoded_get_char_id(bidi_txt, i);
+                logical_char_pos += _lv_bidi_get_logical_pos(bidi_txt, NULL, line_end - line_start, base_dir, t, NULL);
+#else
+                logical_char_pos = _lv_txt_encoded_get_char_id(txt, line_start + i);
+#endif
+            }
+
+            uint32_t letter;
+            uint32_t letter_next;
+            _lv_txt_encoded_letter_next_2(bidi_txt, &letter, &letter_next, &i);
+            /*Handle the re-color command*/
+            if((dsc->flag & LV_TEXT_FLAG_RECOLOR) != 0) {
+                if(letter == (uint32_t)LV_TXT_COLOR_CMD[0]) {
+                    if(cmd_state == CMD_STATE_WAIT) { /*Start char*/
+                        par_start = i;
+                        cmd_state = CMD_STATE_PAR;
+                        continue;
+                    }
+                    else if(cmd_state == CMD_STATE_PAR) {   /*Other start char in parameter escaped cmd. char*/
+                        cmd_state = CMD_STATE_WAIT;
+                    }
+                    else if(cmd_state == CMD_STATE_IN) {   /*Command end*/
+                        cmd_state = CMD_STATE_WAIT;
+                        continue;
+                    }
+                }
+
+                /*Skip the color parameter and wait the space after it*/
+                if(cmd_state == CMD_STATE_PAR) {
+                    if(letter == ' ') {
+                        /*Get the parameter*/
+                        if(i - par_start == LABEL_RECOLOR_PAR_LENGTH + 1) {
+                            char buf[LABEL_RECOLOR_PAR_LENGTH + 1];
+                            lv_memcpy_small(buf, &bidi_txt[par_start], LABEL_RECOLOR_PAR_LENGTH);
+                            buf[LABEL_RECOLOR_PAR_LENGTH] = '\0';
+                            int r, g, b;
+                            r       = (hex_char_to_num(buf[0]) << 4) + hex_char_to_num(buf[1]);
+                            g       = (hex_char_to_num(buf[2]) << 4) + hex_char_to_num(buf[3]);
+                            b       = (hex_char_to_num(buf[4]) << 4) + hex_char_to_num(buf[5]);
+                            recolor = lv_color_make(r, g, b);
+                        }
+                        else {
+                            recolor.full = dsc->color.full;
+                        }
+                        cmd_state = CMD_STATE_IN; /*After the parameter the text is in the command*/
+                    }
+                    continue;
+                }
+            }
+
+            color = dsc->color;
+
+            if(cmd_state == CMD_STATE_IN) color = recolor;
+
+            letter_w = lv_font_get_glyph_width(font, letter, letter_next);
+
+            if(sel_start != 0xFFFF && sel_end != 0xFFFF) {
+                if(logical_char_pos >= sel_start && logical_char_pos < sel_end) {
+                    lv_area_t sel_coords;
+                    sel_coords.x1 = pos.x;
+                    sel_coords.y1 = pos.y;
+                    sel_coords.x2 = pos.x + letter_w + dsc->letter_space - 1;
+                    sel_coords.y2 = pos.y + line_height - 1;
+                    lv_draw_rect(draw_ctx, &draw_dsc_sel, &sel_coords);
+                    color = dsc->sel_color;
+                }
+            }
+
+            dsc_mod.color = color;
+            lv_draw_letter(draw_ctx, &dsc_mod, &pos, letter);
+
+            if(letter_w > 0) {
+                pos.x += letter_w + dsc->letter_space;
+            }
+        }
+
+        if(dsc->decor & LV_TEXT_DECOR_STRIKETHROUGH) {
+            lv_point_t p1;
+            lv_point_t p2;
+            p1.x = pos_x_start;
+            p1.y = pos.y + (dsc->font->line_height / 2)  + line_dsc.width / 2;
+            p2.x = pos.x;
+            p2.y = p1.y;
+            line_dsc.color = color;
+            lv_draw_line(draw_ctx, &line_dsc, &p1, &p2);
+        }
+
+        if(dsc->decor  & LV_TEXT_DECOR_UNDERLINE) {
+            lv_point_t p1;
+            lv_point_t p2;
+            p1.x = pos_x_start;
+            p1.y = pos.y + dsc->font->line_height - dsc->font->base_line - font->underline_position;
+            p2.x = pos.x;
+            p2.y = p1.y;
+            line_dsc.color = color;
+            lv_draw_line(draw_ctx, &line_dsc, &p1, &p2);
+        }
+
+#if LV_USE_BIDI
+        lv_mem_buf_release(bidi_txt);
+        bidi_txt = NULL;
+#endif
+        /*Go to next line*/
+        line_start = line_end;
+        line_end += _lv_txt_get_next_line(&txt[line_start], font, dsc->letter_space, w, NULL, dsc->flag);
+
+        pos.x = coords->x1;
+        /*Align to middle*/
+        if(align == LV_TEXT_ALIGN_CENTER) {
+            line_width =
+                lv_txt_get_width(&txt[line_start], line_end - line_start, font, dsc->letter_space, dsc->flag);
+
+            pos.x += (lv_area_get_width(coords) - line_width) / 2;
+
+        }
+        /*Align to the right*/
+        else if(align == LV_TEXT_ALIGN_RIGHT) {
+            line_width =
+                lv_txt_get_width(&txt[line_start], line_end - line_start, font, dsc->letter_space, dsc->flag);
+            pos.x += lv_area_get_width(coords) - line_width;
+        }
+
+        /*Go the next line position*/
+        pos.y += line_height;
+
+        if(pos.y > draw_ctx->clip_area->y2) return;
+    }
+
+    LV_ASSERT_MEM_INTEGRITY();
+}
+
+void lv_draw_letter(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,  const lv_point_t * pos_p,
+                    uint32_t letter)
+{
+    draw_ctx->draw_letter(draw_ctx, dsc, pos_p, letter);
+}
+
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+/**
+ * Convert a hexadecimal characters to a number (0..15)
+ * @param hex Pointer to a hexadecimal character (0..9, A..F)
+ * @return the numerical value of `hex` or 0 on error
+ */
+static uint8_t hex_char_to_num(char hex)
+{
+    uint8_t result = 0;
+
+    if(hex >= '0' && hex <= '9') {
+        result = hex - '0';
+    }
+    else {
+        if(hex >= 'a') hex -= 'a' - 'A'; /*Convert to upper case*/
+
+        switch(hex) {
+            case 'A':
+                result = 10;
+                break;
+            case 'B':
+                result = 11;
+                break;
+            case 'C':
+                result = 12;
+                break;
+            case 'D':
+                result = 13;
+                break;
+            case 'E':
+                result = 14;
+                break;
+            case 'F':
+                result = 15;
+                break;
+            default:
+                result = 0;
+                break;
+        }
+    }
+
+    return result;
+}
+

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_label.h

@@ -0,0 +1,100 @@
+/**
+ * @file lv_draw_label.h
+ *
+ */
+
+#ifndef LV_DRAW_LABEL_H
+#define LV_DRAW_LABEL_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../misc/lv_bidi.h"
+#include "../misc/lv_txt.h"
+#include "../misc/lv_color.h"
+#include "../misc/lv_style.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define LV_DRAW_LABEL_NO_TXT_SEL (0xFFFF)
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    const lv_font_t * font;
+    uint32_t sel_start;
+    uint32_t sel_end;
+    lv_color_t color;
+    lv_color_t sel_color;
+    lv_color_t sel_bg_color;
+    lv_coord_t line_space;
+    lv_coord_t letter_space;
+    lv_coord_t ofs_x;
+    lv_coord_t ofs_y;
+    lv_opa_t opa;
+    lv_base_dir_t bidi_dir;
+    lv_text_align_t align;
+    lv_text_flag_t flag;
+    lv_text_decor_t decor : 3;
+    lv_blend_mode_t blend_mode: 3;
+} lv_draw_label_dsc_t;
+
+/** Store some info to speed up drawing of very large texts
+ * It takes a lot of time to get the first visible character because
+ * all the previous characters needs to be checked to calculate the positions.
+ * This structure stores an earlier (e.g. at -1000 px) coordinate and the index of that line.
+ * Therefore the calculations can start from here.*/
+typedef struct _lv_draw_label_hint_t {
+    /** Index of the line at `y` coordinate*/
+    int32_t line_start;
+
+    /** Give the `y` coordinate of the first letter at `line start` index. Relative to the label's coordinates*/
+    int32_t y;
+
+    /** The 'y1' coordinate of the label when the hint was saved.
+     * Used to invalidate the hint if the label has moved too much.*/
+    int32_t coord_y;
+} lv_draw_label_hint_t;
+
+struct _lv_draw_ctx_t;
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+LV_ATTRIBUTE_FAST_MEM void lv_draw_label_dsc_init(lv_draw_label_dsc_t * dsc);
+
+/**
+ * Write a text
+ * @param coords coordinates of the label
+ * @param mask the label will be drawn only in this area
+ * @param dsc pointer to draw descriptor
+ * @param txt `\0` terminated text to write
+ * @param hint pointer to a `lv_draw_label_hint_t` variable.
+ * It is managed by the draw to speed up the drawing of very long texts (thousands of lines).
+ */
+LV_ATTRIBUTE_FAST_MEM void lv_draw_label(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,
+                                         const lv_area_t * coords, const char * txt, lv_draw_label_hint_t * hint);
+
+void lv_draw_letter(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,  const lv_point_t * pos_p,
+                    uint32_t letter);
+
+/***********************
+ * GLOBAL VARIABLES
+ ***********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_LABEL_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_layer.c

@@ -0,0 +1,93 @@
+/**
+ * @file lv_draw_layer.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw.h"
+#include "lv_draw_arc.h"
+#include "../core/lv_refr.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_draw_layer_ctx_t * lv_draw_layer_create(lv_draw_ctx_t * draw_ctx, const lv_area_t * layer_area,
+                                           lv_draw_layer_flags_t flags)
+{
+    if(draw_ctx->layer_init == NULL) return NULL;
+
+    lv_draw_layer_ctx_t * layer_ctx = lv_mem_alloc(draw_ctx->layer_instance_size);
+    LV_ASSERT_MALLOC(layer_ctx);
+    if(layer_ctx == NULL) {
+        LV_LOG_WARN("Couldn't allocate a new layer context");
+        return NULL;
+    }
+
+    lv_memset_00(layer_ctx, draw_ctx->layer_instance_size);
+
+    lv_disp_t * disp_refr = _lv_refr_get_disp_refreshing();
+    layer_ctx->original.buf = draw_ctx->buf;
+    layer_ctx->original.buf_area = draw_ctx->buf_area;
+    layer_ctx->original.clip_area = draw_ctx->clip_area;
+    layer_ctx->original.screen_transp = disp_refr->driver->screen_transp;
+    layer_ctx->area_full = *layer_area;
+
+    lv_draw_layer_ctx_t * init_layer_ctx =  draw_ctx->layer_init(draw_ctx, layer_ctx, flags);
+    if(NULL == init_layer_ctx) {
+        lv_mem_free(layer_ctx);
+    }
+    return init_layer_ctx;
+}
+
+void lv_draw_layer_adjust(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
+                          lv_draw_layer_flags_t flags)
+{
+    if(draw_ctx->layer_adjust) draw_ctx->layer_adjust(draw_ctx, layer_ctx, flags);
+}
+
+void lv_draw_layer_blend(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
+                         lv_draw_img_dsc_t * draw_dsc)
+{
+    if(draw_ctx->layer_blend) draw_ctx->layer_blend(draw_ctx, layer_ctx, draw_dsc);
+}
+
+void lv_draw_layer_destroy(lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx)
+{
+
+    lv_draw_wait_for_finish(draw_ctx);
+    draw_ctx->buf = layer_ctx->original.buf;
+    draw_ctx->buf_area = layer_ctx->original.buf_area;
+    draw_ctx->clip_area = layer_ctx->original.clip_area;
+    lv_disp_t * disp_refr = _lv_refr_get_disp_refreshing();
+    disp_refr->driver->screen_transp = layer_ctx->original.screen_transp;
+
+    if(draw_ctx->layer_destroy) draw_ctx->layer_destroy(draw_ctx, layer_ctx);
+    lv_mem_free(layer_ctx);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_layer.h

@@ -0,0 +1,83 @@
+/**
+ * @file lv_draw_layer.h
+ *
+ */
+
+#ifndef LV_DRAW_LAYER_H
+#define LV_DRAW_LAYER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_conf_internal.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+struct _lv_draw_ctx_t;
+struct _lv_draw_layer_ctx_t;
+
+typedef enum {
+    LV_DRAW_LAYER_FLAG_NONE,
+    LV_DRAW_LAYER_FLAG_HAS_ALPHA,
+    LV_DRAW_LAYER_FLAG_CAN_SUBDIVIDE,
+} lv_draw_layer_flags_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Create a new layer context. It is used to start and independent rendering session
+ * with the current draw_ctx
+ * @param draw_ctx      pointer to the current draw context
+ * @param layer_area    the coordinates of the layer
+ * @param flags         OR-ed flags from @lv_draw_layer_flags_t
+ * @return              pointer to the layer context, or NULL on error
+ */
+struct _lv_draw_layer_ctx_t * lv_draw_layer_create(struct _lv_draw_ctx_t * draw_ctx, const lv_area_t * layer_area,
+                                                   lv_draw_layer_flags_t flags);
+
+/**
+ * Adjust the layer_ctx and/or draw_ctx based on the `layer_ctx->area_act`.
+ * It's called only if flags has `LV_DRAW_LAYER_FLAG_CAN_SUBDIVIDE`
+ * @param draw_ctx      pointer to the current draw context
+ * @param layer_ctx     pointer to a layer context
+ * @param flags         OR-ed flags from @lv_draw_layer_flags_t
+ */
+void lv_draw_layer_adjust(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
+                          lv_draw_layer_flags_t flags);
+
+/**
+ * Blend a rendered layer to `layer_ctx->area_act`
+ * @param draw_ctx      pointer to the current draw context
+ * @param layer_ctx     pointer to a layer context
+ * @param draw_dsc      pointer to an image draw descriptor
+ */
+void lv_draw_layer_blend(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
+                         lv_draw_img_dsc_t * draw_dsc);
+
+/**
+ * Destroy a layer context.
+ * @param draw_ctx      pointer to the current draw context
+ * @param layer_ctx     pointer to a layer context
+ */
+void lv_draw_layer_destroy(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_LAYER_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_line.c

@@ -0,0 +1,56 @@
+/**
+ * @file lv_draw_line.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include <stdbool.h>
+#include "../core/lv_refr.h"
+#include "../misc/lv_math.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+LV_ATTRIBUTE_FAST_MEM void lv_draw_line_dsc_init(lv_draw_line_dsc_t * dsc)
+{
+    lv_memset_00(dsc, sizeof(lv_draw_line_dsc_t));
+    dsc->width = 1;
+    dsc->opa = LV_OPA_COVER;
+    dsc->color = lv_color_black();
+}
+
+LV_ATTRIBUTE_FAST_MEM void lv_draw_line(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc,
+                                        const lv_point_t * point1, const lv_point_t * point2)
+{
+    if(dsc->width == 0) return;
+    if(dsc->opa <= LV_OPA_MIN) return;
+
+    draw_ctx->draw_line(draw_ctx, dsc, point1, point2);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_line.h

@@ -0,0 +1,67 @@
+/**
+ * @file lv_draw_line.h
+ *
+ */
+
+#ifndef LV_DRAW_LINE_H
+#define LV_DRAW_LINE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_conf_internal.h"
+#include "../misc/lv_color.h"
+#include "../misc/lv_area.h"
+#include "../misc/lv_style.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+typedef struct {
+    lv_color_t color;
+    lv_coord_t width;
+    lv_coord_t dash_width;
+    lv_coord_t dash_gap;
+    lv_opa_t opa;
+    lv_blend_mode_t blend_mode  : 2;
+    uint8_t round_start : 1;
+    uint8_t round_end   : 1;
+    uint8_t raw_end     : 1;    /*Do not bother with perpendicular line ending if it's not visible for any reason*/
+} lv_draw_line_dsc_t;
+
+struct _lv_draw_ctx_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+LV_ATTRIBUTE_FAST_MEM void lv_draw_line_dsc_init(lv_draw_line_dsc_t * dsc);
+
+/**
+ * Draw a line
+ * @param point1 first point of the line
+ * @param point2 second point of the line
+ * @param clip the line will be drawn only in this area
+ * @param dsc pointer to an initialized `lv_draw_line_dsc_t` variable
+ */
+void lv_draw_line(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc, const lv_point_t * point1,
+                  const lv_point_t * point2);
+
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_LINE_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_mask.h

@@ -0,0 +1,394 @@
+/**
+ * @file lv_draw_mask.h
+ *
+ */
+
+#ifndef LV_DRAW_MASK_H
+#define LV_DRAW_MASK_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include <stdbool.h>
+#include "../misc/lv_area.h"
+#include "../misc/lv_color.h"
+#include "../misc/lv_math.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define LV_MASK_ID_INV  (-1)
+#if LV_DRAW_COMPLEX
+# define _LV_MASK_MAX_NUM     16
+#else
+# define _LV_MASK_MAX_NUM     1
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+enum {
+    LV_DRAW_MASK_RES_TRANSP,
+    LV_DRAW_MASK_RES_FULL_COVER,
+    LV_DRAW_MASK_RES_CHANGED,
+    LV_DRAW_MASK_RES_UNKNOWN
+};
+
+typedef uint8_t lv_draw_mask_res_t;
+
+typedef struct {
+    void * param;
+    void * custom_id;
+} _lv_draw_mask_saved_t;
+
+typedef _lv_draw_mask_saved_t _lv_draw_mask_saved_arr_t[_LV_MASK_MAX_NUM];
+
+
+
+#if LV_DRAW_COMPLEX == 0
+static inline  uint8_t lv_draw_mask_get_cnt(void)
+{
+    return 0;
+}
+
+static inline bool lv_draw_mask_is_any(const lv_area_t * a)
+{
+    LV_UNUSED(a);
+    return false;
+}
+
+#endif
+
+#if LV_DRAW_COMPLEX
+
+enum {
+    LV_DRAW_MASK_TYPE_LINE,
+    LV_DRAW_MASK_TYPE_ANGLE,
+    LV_DRAW_MASK_TYPE_RADIUS,
+    LV_DRAW_MASK_TYPE_FADE,
+    LV_DRAW_MASK_TYPE_MAP,
+    LV_DRAW_MASK_TYPE_POLYGON,
+};
+
+typedef uint8_t lv_draw_mask_type_t;
+
+enum {
+    LV_DRAW_MASK_LINE_SIDE_LEFT = 0,
+    LV_DRAW_MASK_LINE_SIDE_RIGHT,
+    LV_DRAW_MASK_LINE_SIDE_TOP,
+    LV_DRAW_MASK_LINE_SIDE_BOTTOM,
+};
+
+/**
+ * A common callback type for every mask type.
+ * Used internally by the library.
+ */
+typedef lv_draw_mask_res_t (*lv_draw_mask_xcb_t)(lv_opa_t * mask_buf, lv_coord_t abs_x, lv_coord_t abs_y,
+                                                 lv_coord_t len,
+                                                 void * p);
+
+typedef uint8_t lv_draw_mask_line_side_t;
+
+typedef struct {
+    lv_draw_mask_xcb_t cb;
+    lv_draw_mask_type_t type;
+} _lv_draw_mask_common_dsc_t;
+
+typedef struct {
+    /*The first element must be the common descriptor*/
+    _lv_draw_mask_common_dsc_t dsc;
+
+    struct {
+        /*First point*/
+        lv_point_t p1;
+
+        /*Second point*/
+        lv_point_t p2;
+
+        /*Which side to keep?*/
+        lv_draw_mask_line_side_t side : 2;
+    } cfg;
+
+    /*A point of the line*/
+    lv_point_t origo;
+
+    /*X / (1024*Y) steepness (X is 0..1023 range). What is the change of X in 1024 Y?*/
+    int32_t xy_steep;
+
+    /*Y / (1024*X) steepness (Y is 0..1023 range). What is the change of Y in 1024 X?*/
+    int32_t yx_steep;
+
+    /*Helper which stores yx_steep for flat lines and xy_steep for steep (non flat) lines*/
+    int32_t steep;
+
+    /*Steepness in 1 px in 0..255 range. Used only by flat lines.*/
+    int32_t spx;
+
+    /*1: It's a flat line? (Near to horizontal)*/
+    uint8_t flat : 1;
+
+    /*Invert the mask. The default is: Keep the left part.
+     *It is used to select left/right/top/bottom*/
+    uint8_t inv: 1;
+} lv_draw_mask_line_param_t;
+
+typedef struct {
+    /*The first element must be the common descriptor*/
+    _lv_draw_mask_common_dsc_t dsc;
+
+    struct {
+        lv_point_t vertex_p;
+        lv_coord_t start_angle;
+        lv_coord_t end_angle;
+    } cfg;
+
+    lv_draw_mask_line_param_t start_line;
+    lv_draw_mask_line_param_t end_line;
+    uint16_t delta_deg;
+} lv_draw_mask_angle_param_t;
+
+typedef struct  {
+    uint8_t * buf;
+    lv_opa_t * cir_opa;         /*Opacity of values on the circumference of an 1/4 circle*/
+    uint16_t * x_start_on_y;        /*The x coordinate of the circle for each y value*/
+    uint16_t * opa_start_on_y;      /*The index of `cir_opa` for each y value*/
+    int32_t life;               /*How many times the entry way used*/
+    uint32_t used_cnt;          /*Like a semaphore to count the referencing masks*/
+    lv_coord_t radius;          /*The radius of the entry*/
+} _lv_draw_mask_radius_circle_dsc_t;
+
+typedef _lv_draw_mask_radius_circle_dsc_t _lv_draw_mask_radius_circle_dsc_arr_t[LV_CIRCLE_CACHE_SIZE];
+
+typedef struct {
+    /*The first element must be the common descriptor*/
+    _lv_draw_mask_common_dsc_t dsc;
+
+    struct {
+        lv_area_t rect;
+        lv_coord_t radius;
+        /*Invert the mask. 0: Keep the pixels inside.*/
+        uint8_t outer: 1;
+    } cfg;
+
+    _lv_draw_mask_radius_circle_dsc_t * circle;
+} lv_draw_mask_radius_param_t;
+
+
+typedef struct {
+    /*The first element must be the common descriptor*/
+    _lv_draw_mask_common_dsc_t dsc;
+
+    struct {
+        lv_area_t coords;
+        lv_coord_t y_top;
+        lv_coord_t y_bottom;
+        lv_opa_t opa_top;
+        lv_opa_t opa_bottom;
+    } cfg;
+
+} lv_draw_mask_fade_param_t;
+
+
+typedef struct _lv_draw_mask_map_param_t {
+    /*The first element must be the common descriptor*/
+    _lv_draw_mask_common_dsc_t dsc;
+
+    struct {
+        lv_area_t coords;
+        const lv_opa_t * map;
+    } cfg;
+} lv_draw_mask_map_param_t;
+
+typedef struct {
+    /*The first element must be the common descriptor*/
+    _lv_draw_mask_common_dsc_t dsc;
+
+    struct {
+        lv_point_t * points;
+        uint16_t point_cnt;
+    } cfg;
+} lv_draw_mask_polygon_param_t;
+
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Add a draw mask. Everything drawn after it (until removing the mask) will be affected by the mask.
+ * @param param an initialized mask parameter. Only the pointer is saved.
+ * @param custom_id a custom pointer to identify the mask. Used in `lv_draw_mask_remove_custom`.
+ * @return the an integer, the ID of the mask. Can be used in `lv_draw_mask_remove_id`.
+ */
+int16_t lv_draw_mask_add(void * param, void * custom_id);
+
+//! @cond Doxygen_Suppress
+
+/**
+ * Apply the added buffers on a line. Used internally by the library's drawing routines.
+ * @param mask_buf store the result mask here. Has to be `len` byte long. Should be initialized with `0xFF`.
+ * @param abs_x absolute X coordinate where the line to calculate start
+ * @param abs_y absolute Y coordinate where the line to calculate start
+ * @param len length of the line to calculate (in pixel count)
+ * @return One of these values:
+ * - `LV_DRAW_MASK_RES_FULL_TRANSP`: the whole line is transparent. `mask_buf` is not set to zero
+ * - `LV_DRAW_MASK_RES_FULL_COVER`: the whole line is fully visible. `mask_buf` is unchanged
+ * - `LV_DRAW_MASK_RES_CHANGED`: `mask_buf` has changed, it shows the desired opacity of each pixel in the given line
+ */
+LV_ATTRIBUTE_FAST_MEM lv_draw_mask_res_t lv_draw_mask_apply(lv_opa_t * mask_buf, lv_coord_t abs_x, lv_coord_t abs_y,
+                                                            lv_coord_t len);
+
+/**
+ * Apply the specified buffers on a line. Used internally by the library's drawing routines.
+ * @param mask_buf store the result mask here. Has to be `len` byte long. Should be initialized with `0xFF`.
+ * @param abs_x absolute X coordinate where the line to calculate start
+ * @param abs_y absolute Y coordinate where the line to calculate start
+ * @param len length of the line to calculate (in pixel count)
+ * @param ids ID array of added buffers
+ * @param ids_count number of ID array
+ * @return One of these values:
+ * - `LV_DRAW_MASK_RES_FULL_TRANSP`: the whole line is transparent. `mask_buf` is not set to zero
+ * - `LV_DRAW_MASK_RES_FULL_COVER`: the whole line is fully visible. `mask_buf` is unchanged
+ * - `LV_DRAW_MASK_RES_CHANGED`: `mask_buf` has changed, it shows the desired opacity of each pixel in the given line
+ */
+LV_ATTRIBUTE_FAST_MEM lv_draw_mask_res_t lv_draw_mask_apply_ids(lv_opa_t * mask_buf, lv_coord_t abs_x, lv_coord_t abs_y,
+                                                                lv_coord_t len, const int16_t * ids, int16_t ids_count);
+
+//! @endcond
+
+/**
+ * Remove a mask with a given ID
+ * @param id the ID of the mask.  Returned by `lv_draw_mask_add`
+ * @return the parameter of the removed mask.
+ * If more masks have `custom_id` ID then the last mask's parameter will be returned
+ */
+void * lv_draw_mask_remove_id(int16_t id);
+
+/**
+ * Remove all mask with a given custom ID
+ * @param custom_id a pointer used in `lv_draw_mask_add`
+ * @return return the parameter of the removed mask.
+ * If more masks have `custom_id` ID then the last mask's parameter will be returned
+ */
+void * lv_draw_mask_remove_custom(void * custom_id);
+
+/**
+ * Free the data from the parameter.
+ * It's called inside `lv_draw_mask_remove_id` and `lv_draw_mask_remove_custom`
+ * Needs to be called only in special cases when the mask is not added by `lv_draw_mask_add`
+ * and not removed by `lv_draw_mask_remove_id` or `lv_draw_mask_remove_custom`
+ * @param p pointer to a mask parameter
+ */
+void lv_draw_mask_free_param(void * p);
+
+/**
+ * Called by LVGL the rendering of a screen is ready to clean up
+ * the temporal (cache) data of the masks
+ */
+void _lv_draw_mask_cleanup(void);
+
+//! @cond Doxygen_Suppress
+
+/**
+ * Count the currently added masks
+ * @return number of active masks
+ */
+LV_ATTRIBUTE_FAST_MEM uint8_t lv_draw_mask_get_cnt(void);
+
+
+/**
+ * Check if there is any added draw mask
+ * @param a     an area to test for affecting masks.
+ * @return true: there is t least 1 draw mask; false: there are no draw masks
+ */
+bool lv_draw_mask_is_any(const lv_area_t * a);
+
+//! @endcond
+
+/**
+ *Initialize a line mask from two points.
+ * @param param pointer to a `lv_draw_mask_param_t` to initialize
+ * @param p1x X coordinate of the first point of the line
+ * @param p1y Y coordinate of the first point of the line
+ * @param p2x X coordinate of the second point of the line
+ * @param p2y y coordinate of the second point of the line
+ * @param side and element of `lv_draw_mask_line_side_t` to describe which side to keep.
+ * With `LV_DRAW_MASK_LINE_SIDE_LEFT/RIGHT` and horizontal line all pixels are kept
+ * With `LV_DRAW_MASK_LINE_SIDE_TOP/BOTTOM` and vertical line all pixels are kept
+ */
+void lv_draw_mask_line_points_init(lv_draw_mask_line_param_t * param, lv_coord_t p1x, lv_coord_t p1y, lv_coord_t p2x,
+                                   lv_coord_t p2y, lv_draw_mask_line_side_t side);
+
+/**
+ *Initialize a line mask from a point and an angle.
+ * @param param pointer to a `lv_draw_mask_param_t` to initialize
+ * @param px X coordinate of a point of the line
+ * @param py X coordinate of a point of the line
+ * @param angle right 0 deg, bottom: 90
+ * @param side and element of `lv_draw_mask_line_side_t` to describe which side to keep.
+ * With `LV_DRAW_MASK_LINE_SIDE_LEFT/RIGHT` and horizontal line all pixels are kept
+ * With `LV_DRAW_MASK_LINE_SIDE_TOP/BOTTOM` and vertical line all pixels are kept
+ */
+void lv_draw_mask_line_angle_init(lv_draw_mask_line_param_t * param, lv_coord_t p1x, lv_coord_t py, int16_t angle,
+                                  lv_draw_mask_line_side_t side);
+
+/**
+ * Initialize an angle mask.
+ * @param param pointer to a `lv_draw_mask_param_t` to initialize
+ * @param vertex_x X coordinate of the angle vertex (absolute coordinates)
+ * @param vertex_y Y coordinate of the angle vertex (absolute coordinates)
+ * @param start_angle start angle in degrees. 0 deg on the right, 90 deg, on the bottom
+ * @param end_angle end angle
+ */
+void lv_draw_mask_angle_init(lv_draw_mask_angle_param_t * param, lv_coord_t vertex_x, lv_coord_t vertex_y,
+                             lv_coord_t start_angle, lv_coord_t end_angle);
+
+/**
+ * Initialize a fade mask.
+ * @param param pointer to an `lv_draw_mask_radius_param_t` to initialize
+ * @param rect coordinates of the rectangle to affect (absolute coordinates)
+ * @param radius radius of the rectangle
+ * @param inv true: keep the pixels inside the rectangle; keep the pixels outside of the rectangle
+ */
+void lv_draw_mask_radius_init(lv_draw_mask_radius_param_t * param, const lv_area_t * rect, lv_coord_t radius, bool inv);
+
+/**
+ * Initialize a fade mask.
+ * @param param pointer to a `lv_draw_mask_param_t` to initialize
+ * @param coords coordinates of the area to affect (absolute coordinates)
+ * @param opa_top opacity on the top
+ * @param y_top at which coordinate start to change to opacity to `opa_bottom`
+ * @param opa_bottom opacity at the bottom
+ * @param y_bottom at which coordinate reach `opa_bottom`.
+ */
+void lv_draw_mask_fade_init(lv_draw_mask_fade_param_t * param, const lv_area_t * coords, lv_opa_t opa_top,
+                            lv_coord_t y_top,
+                            lv_opa_t opa_bottom, lv_coord_t y_bottom);
+
+/**
+ * Initialize a map mask.
+ * @param param pointer to a `lv_draw_mask_param_t` to initialize
+ * @param coords coordinates of the map (absolute coordinates)
+ * @param map array of bytes with the mask values
+ */
+void lv_draw_mask_map_init(lv_draw_mask_map_param_t * param, const lv_area_t * coords, const lv_opa_t * map);
+
+void lv_draw_mask_polygon_init(lv_draw_mask_polygon_param_t * param, const lv_point_t * points, uint16_t point_cnt);
+
+#endif /*LV_DRAW_COMPLEX*/
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_MASK_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_rect.c

@@ -0,0 +1,73 @@
+/**
+ * @file lv_draw_rect.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw.h"
+#include "lv_draw_rect.h"
+#include "../misc/lv_assert.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+LV_ATTRIBUTE_FAST_MEM void lv_draw_rect_dsc_init(lv_draw_rect_dsc_t * dsc)
+{
+    lv_memset_00(dsc, sizeof(lv_draw_rect_dsc_t));
+    dsc->bg_color = lv_color_white();
+    dsc->bg_grad.stops[0].color = lv_color_white();
+    dsc->bg_grad.stops[1].color = lv_color_black();
+    dsc->bg_grad.stops[1].frac = 0xFF;
+    dsc->bg_grad.stops_count = 2;
+    dsc->border_color = lv_color_black();
+    dsc->shadow_color = lv_color_black();
+    dsc->bg_img_symbol_font = LV_FONT_DEFAULT;
+    dsc->bg_opa = LV_OPA_COVER;
+    dsc->bg_img_opa = LV_OPA_COVER;
+    dsc->outline_opa = LV_OPA_COVER;
+    dsc->border_opa = LV_OPA_COVER;
+    dsc->shadow_opa = LV_OPA_COVER;
+    dsc->border_side = LV_BORDER_SIDE_FULL;
+}
+
+/**
+ * Draw a rectangle
+ * @param coords the coordinates of the rectangle
+ * @param mask the rectangle will be drawn only in this mask
+ * @param dsc pointer to an initialized `lv_draw_rect_dsc_t` variable
+ */
+void lv_draw_rect(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
+{
+    if(lv_area_get_height(coords) < 1 || lv_area_get_width(coords) < 1) return;
+
+    draw_ctx->draw_rect(draw_ctx, dsc, coords);
+
+    LV_ASSERT_MEM_INTEGRITY();
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_rect.h

@@ -0,0 +1,96 @@
+/**
+ * @file lv_draw_rect.h
+ *
+ */
+
+#ifndef LV_DRAW_RECT_H
+#define LV_DRAW_RECT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_conf_internal.h"
+#include "../misc/lv_color.h"
+#include "../misc/lv_area.h"
+#include "../misc/lv_style.h"
+#include "sw/lv_draw_sw_gradient.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define LV_RADIUS_CIRCLE        0x7FFF /**< A very big radius to always draw as circle*/
+LV_EXPORT_CONST_INT(LV_RADIUS_CIRCLE);
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    lv_coord_t radius;
+    lv_blend_mode_t blend_mode;
+
+    /*Background*/
+    lv_opa_t bg_opa;
+    lv_color_t bg_color;        /**< First element of a gradient is a color, so it maps well here*/
+    lv_grad_dsc_t bg_grad;
+
+    /*Background img*/
+    const void * bg_img_src;
+    const void * bg_img_symbol_font;
+    lv_color_t bg_img_recolor;
+    lv_opa_t bg_img_opa;
+    lv_opa_t bg_img_recolor_opa;
+    uint8_t bg_img_tiled;
+
+    /*Border*/
+    lv_color_t border_color;
+    lv_coord_t border_width;
+    lv_opa_t border_opa;
+    uint8_t border_post : 1;        /*There is a border it will be drawn later.*/
+    lv_border_side_t border_side : 5;
+
+    /*Outline*/
+    lv_color_t outline_color;
+    lv_coord_t outline_width;
+    lv_coord_t outline_pad;
+    lv_opa_t outline_opa;
+
+    /*Shadow*/
+    lv_color_t shadow_color;
+    lv_coord_t shadow_width;
+    lv_coord_t shadow_ofs_x;
+    lv_coord_t shadow_ofs_y;
+    lv_coord_t shadow_spread;
+    lv_opa_t shadow_opa;
+} lv_draw_rect_dsc_t;
+
+struct _lv_draw_ctx_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+LV_ATTRIBUTE_FAST_MEM void lv_draw_rect_dsc_init(lv_draw_rect_dsc_t * dsc);
+
+
+/**
+ * Draw a rectangle
+ * @param coords the coordinates of the rectangle
+ * @param clip the rectangle will be drawn only in this area
+ * @param dsc pointer to an initialized `lv_draw_rect_dsc_t` variable
+ */
+void lv_draw_rect(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_RECT_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_transform.c

@@ -0,0 +1,54 @@
+/**
+ * @file lv_draw_transform.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw.h"
+#include "lv_draw_transform.h"
+#include "../misc/lv_assert.h"
+#include "../misc/lv_area.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+void lv_draw_transform(lv_draw_ctx_t * draw_ctx, const lv_area_t * dest_area, const void * src_buf, lv_coord_t src_w,
+                       lv_coord_t src_h,
+                       lv_coord_t src_stride, const lv_draw_img_dsc_t * draw_dsc, lv_img_cf_t cf, lv_color_t * cbuf, lv_opa_t * abuf)
+{
+    LV_ASSERT_NULL(draw_ctx);
+    if(draw_ctx->draw_transform == NULL) {
+        LV_LOG_WARN("draw_ctx->draw_transform == NULL");
+        return;
+    }
+
+    draw_ctx->draw_transform(draw_ctx, dest_area, src_buf, src_w, src_h, src_stride, draw_dsc, cf, cbuf, abuf);
+
+}
+
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_transform.h

@@ -0,0 +1,44 @@
+/**
+ * @file lv_draw_transform.h
+ *
+ */
+
+#ifndef LV_DRAW_TRANSFORM_H
+#define LV_DRAW_TRANSFORM_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_conf_internal.h"
+#include "../misc/lv_area.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+struct _lv_draw_ctx_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void lv_draw_transform(struct _lv_draw_ctx_t * draw_ctx, const lv_area_t * dest_area, const void * src_buf,
+                       lv_coord_t src_w, lv_coord_t src_h,
+                       lv_coord_t src_stride, const lv_draw_img_dsc_t * draw_dsc, lv_img_cf_t cf, lv_color_t * cbuf, lv_opa_t * abuf);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_TRANSFORM_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_triangle.c

@@ -0,0 +1,52 @@
+/**
+ * @file lv_draw_triangle.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw.h"
+#include "lv_draw_triangle.h"
+#include "../misc/lv_math.h"
+#include "../misc/lv_mem.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_polygon(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc, const lv_point_t points[],
+                     uint16_t point_cnt)
+{
+    draw_ctx->draw_polygon(draw_ctx, draw_dsc, points, point_cnt);
+}
+
+void lv_draw_triangle(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc, const lv_point_t points[])
+{
+
+    draw_ctx->draw_polygon(draw_ctx, draw_dsc, points, 3);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_draw_triangle.h

@@ -0,0 +1,42 @@
+/**
+ * @file lv_draw_triangle.h
+ *
+ */
+
+#ifndef LV_DRAW_TRIANGLE_H
+#define LV_DRAW_TRIANGLE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_rect.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void lv_draw_polygon(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc, const lv_point_t points[],
+                     uint16_t point_cnt);
+
+void lv_draw_triangle(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc, const lv_point_t points[]);
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_TRIANGLE_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_img_buf.c

@@ -0,0 +1,463 @@
+/**
+ * @file lv_img_buf.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include <stddef.h>
+#include <string.h>
+#include "lv_img_buf.h"
+#include "lv_draw_img.h"
+#include "../misc/lv_math.h"
+#include "../misc/lv_log.h"
+#include "../misc/lv_mem.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Get the color of an image's pixel
+ * @param dsc an image descriptor
+ * @param x x coordinate of the point to get
+ * @param y x coordinate of the point to get
+ * @param color the color of the image. In case of `LV_IMG_CF_ALPHA_1/2/4/8` this color is used.
+ * Not used in other cases.
+ * @param safe true: check out of bounds
+ * @return color of the point
+ */
+lv_color_t lv_img_buf_get_px_color(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_color_t color)
+{
+    lv_color_t p_color = lv_color_black();
+    uint8_t * buf_u8 = (uint8_t *)dsc->data;
+
+    if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR || dsc->header.cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED ||
+       dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA || dsc->header.cf == LV_IMG_CF_RGB565A8) {
+        uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf) >> 3;
+        uint32_t px     = dsc->header.w * y * px_size + x * px_size;
+        lv_memcpy_small(&p_color, &buf_u8[px], sizeof(lv_color_t));
+#if LV_COLOR_SIZE == 32
+        p_color.ch.alpha = 0xFF; /*Only the color should be get so use a default alpha value*/
+#endif
+    }
+    else if(dsc->header.cf == LV_IMG_CF_INDEXED_1BIT) {
+        buf_u8 += 4 * 2;
+        uint8_t bit = x & 0x7;
+        x           = x >> 3;
+
+        /*Get the current pixel.
+         *dsc->header.w + 7 means rounding up to 8 because the lines are byte aligned
+         *so the possible real width are 8, 16, 24 ...*/
+        uint32_t px  = ((dsc->header.w + 7) >> 3) * y + x;
+        p_color.full = (buf_u8[px] & (1 << (7 - bit))) >> (7 - bit);
+    }
+    else if(dsc->header.cf == LV_IMG_CF_INDEXED_2BIT) {
+        buf_u8 += 4 * 4;
+        uint8_t bit = (x & 0x3) * 2;
+        x           = x >> 2;
+
+        /*Get the current pixel.
+         *dsc->header.w + 3 means rounding up to 4 because the lines are byte aligned
+         *so the possible real width are 4, 8, 12 ...*/
+        uint32_t px  = ((dsc->header.w + 3) >> 2) * y + x;
+        p_color.full = (buf_u8[px] & (3 << (6 - bit))) >> (6 - bit);
+    }
+    else if(dsc->header.cf == LV_IMG_CF_INDEXED_4BIT) {
+        buf_u8 += 4 * 16;
+        uint8_t bit = (x & 0x1) * 4;
+        x           = x >> 1;
+
+        /*Get the current pixel.
+         *dsc->header.w + 1 means rounding up to 2 because the lines are byte aligned
+         *so the possible real width are 2, 4, 6 ...*/
+        uint32_t px  = ((dsc->header.w + 1) >> 1) * y + x;
+        p_color.full = (buf_u8[px] & (0xF << (4 - bit))) >> (4 - bit);
+    }
+    else if(dsc->header.cf == LV_IMG_CF_INDEXED_8BIT) {
+        buf_u8 += 4 * 256;
+        uint32_t px  = dsc->header.w * y + x;
+        p_color.full = buf_u8[px];
+    }
+    else if(dsc->header.cf == LV_IMG_CF_ALPHA_1BIT || dsc->header.cf == LV_IMG_CF_ALPHA_2BIT ||
+            dsc->header.cf == LV_IMG_CF_ALPHA_4BIT || dsc->header.cf == LV_IMG_CF_ALPHA_8BIT) {
+        p_color = color;
+    }
+    return p_color;
+}
+
+/**
+ * Get the alpha value of an image's pixel
+ * @param dsc pointer to an image descriptor
+ * @param x x coordinate of the point to set
+ * @param y x coordinate of the point to set
+ * @param safe true: check out of bounds
+ * @return alpha value of the point
+ */
+lv_opa_t lv_img_buf_get_px_alpha(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y)
+{
+    uint8_t * buf_u8 = (uint8_t *)dsc->data;
+
+    if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
+        uint32_t px = dsc->header.w * y * LV_IMG_PX_SIZE_ALPHA_BYTE + x * LV_IMG_PX_SIZE_ALPHA_BYTE;
+        return buf_u8[px + LV_IMG_PX_SIZE_ALPHA_BYTE - 1];
+    }
+    else if(dsc->header.cf == LV_IMG_CF_ALPHA_1BIT) {
+        uint8_t bit = x & 0x7;
+        x           = x >> 3;
+
+        /*Get the current pixel.
+         *dsc->header.w + 7 means rounding up to 8 because the lines are byte aligned
+         *so the possible real width are 8 ,16, 24 ...*/
+        uint32_t px    = ((dsc->header.w + 7) >> 3) * y + x;
+        uint8_t px_opa = (buf_u8[px] & (1 << (7 - bit))) >> (7 - bit);
+        return px_opa ? LV_OPA_TRANSP : LV_OPA_COVER;
+    }
+    else if(dsc->header.cf == LV_IMG_CF_ALPHA_2BIT) {
+        const uint8_t opa_table[4] = {0, 85, 170, 255}; /*Opacity mapping with bpp = 2*/
+
+        uint8_t bit = (x & 0x3) * 2;
+        x           = x >> 2;
+
+        /*Get the current pixel.
+         *dsc->header.w + 4 means rounding up to 8 because the lines are byte aligned
+         *so the possible real width are 4 ,8, 12 ...*/
+        uint32_t px    = ((dsc->header.w + 3) >> 2) * y + x;
+        uint8_t px_opa = (buf_u8[px] & (3 << (6 - bit))) >> (6 - bit);
+        return opa_table[px_opa];
+    }
+    else if(dsc->header.cf == LV_IMG_CF_ALPHA_4BIT) {
+        const uint8_t opa_table[16] = {0,  17, 34,  51, /*Opacity mapping with bpp = 4*/
+                                       68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255
+                                      };
+
+        uint8_t bit = (x & 0x1) * 4;
+        x           = x >> 1;
+
+        /*Get the current pixel.
+         *dsc->header.w + 1 means rounding up to 8 because the lines are byte aligned
+         *so the possible real width are 2 ,4, 6 ...*/
+        uint32_t px    = ((dsc->header.w + 1) >> 1) * y + x;
+        uint8_t px_opa = (buf_u8[px] & (0xF << (4 - bit))) >> (4 - bit);
+        return opa_table[px_opa];
+    }
+    else if(dsc->header.cf == LV_IMG_CF_ALPHA_8BIT) {
+        uint32_t px = dsc->header.w * y + x;
+        return buf_u8[px];
+    }
+
+    return LV_OPA_COVER;
+}
+
+/**
+ * Set the alpha value of a pixel of an image. The color won't be affected
+ * @param dsc pointer to an image descriptor
+ * @param x x coordinate of the point to set
+ * @param y x coordinate of the point to set
+ * @param opa the desired opacity
+ * @param safe true: check out of bounds
+ */
+void lv_img_buf_set_px_alpha(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_opa_t opa)
+{
+    uint8_t * buf_u8 = (uint8_t *)dsc->data;
+
+    if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
+        uint8_t px_size          = lv_img_cf_get_px_size(dsc->header.cf) >> 3;
+        uint32_t px              = dsc->header.w * y * px_size + x * px_size;
+        buf_u8[px + px_size - 1] = opa;
+    }
+    else if(dsc->header.cf == LV_IMG_CF_ALPHA_1BIT) {
+        opa         = opa >> 7; /*opa -> [0,1]*/
+        uint8_t bit = x & 0x7;
+        x           = x >> 3;
+
+        /*Get the current pixel.
+         *dsc->header.w + 7 means rounding up to 8 because the lines are byte aligned
+         *so the possible real width are 8 ,16, 24 ...*/
+        uint32_t px = ((dsc->header.w + 7) >> 3) * y + x;
+        buf_u8[px]  = buf_u8[px] & ~(1 << (7 - bit));
+        buf_u8[px]  = buf_u8[px] | ((opa & 0x1) << (7 - bit));
+    }
+    else if(dsc->header.cf == LV_IMG_CF_ALPHA_2BIT) {
+        opa         = opa >> 6; /*opa -> [0,3]*/
+        uint8_t bit = (x & 0x3) * 2;
+        x           = x >> 2;
+
+        /*Get the current pixel.
+         *dsc->header.w + 4 means rounding up to 8 because the lines are byte aligned
+         *so the possible real width are 4 ,8, 12 ...*/
+        uint32_t px = ((dsc->header.w + 3) >> 2) * y + x;
+        buf_u8[px]  = buf_u8[px] & ~(3 << (6 - bit));
+        buf_u8[px]  = buf_u8[px] | ((opa & 0x3) << (6 - bit));
+    }
+    else if(dsc->header.cf == LV_IMG_CF_ALPHA_4BIT) {
+        opa         = opa >> 4; /*opa -> [0,15]*/
+        uint8_t bit = (x & 0x1) * 4;
+        x           = x >> 1;
+
+        /*Get the current pixel.
+         *dsc->header.w + 1 means rounding up to 8 because the lines are byte aligned
+         *so the possible real width are 2 ,4, 6 ...*/
+        uint32_t px = ((dsc->header.w + 1) >> 1) * y + x;
+        buf_u8[px]  = buf_u8[px] & ~(0xF << (4 - bit));
+        buf_u8[px]  = buf_u8[px] | ((opa & 0xF) << (4 - bit));
+    }
+    else if(dsc->header.cf == LV_IMG_CF_ALPHA_8BIT) {
+        uint32_t px = dsc->header.w * y + x;
+        buf_u8[px]  = opa;
+    }
+}
+
+/**
+ * Set the color of a pixel of an image. The alpha channel won't be affected.
+ * @param dsc pointer to an image descriptor
+ * @param x x coordinate of the point to set
+ * @param y x coordinate of the point to set
+ * @param c color of the point
+ * @param safe true: check out of bounds
+ */
+void lv_img_buf_set_px_color(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_color_t c)
+{
+    uint8_t * buf_u8 = (uint8_t *)dsc->data;
+
+    if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR || dsc->header.cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED) {
+        uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf) >> 3;
+        uint32_t px     = dsc->header.w * y * px_size + x * px_size;
+        lv_memcpy_small(&buf_u8[px], &c, px_size);
+    }
+    else if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
+        uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf) >> 3;
+        uint32_t px     = dsc->header.w * y * px_size + x * px_size;
+        lv_memcpy_small(&buf_u8[px], &c, px_size - 1); /*-1 to not overwrite the alpha value*/
+    }
+    else if(dsc->header.cf == LV_IMG_CF_INDEXED_1BIT) {
+        buf_u8 += sizeof(lv_color32_t) * 2; /*Skip the palette*/
+
+        uint8_t bit = x & 0x7;
+        x           = x >> 3;
+
+        /*Get the current pixel.
+         *dsc->header.w + 7 means rounding up to 8 because the lines are byte aligned
+         *so the possible real width are 8 ,16, 24 ...*/
+        uint32_t px = ((dsc->header.w + 7) >> 3) * y + x;
+        buf_u8[px]  = buf_u8[px] & ~(1 << (7 - bit));
+        buf_u8[px]  = buf_u8[px] | ((c.full & 0x1) << (7 - bit));
+    }
+    else if(dsc->header.cf == LV_IMG_CF_INDEXED_2BIT) {
+        buf_u8 += sizeof(lv_color32_t) * 4; /*Skip the palette*/
+        uint8_t bit = (x & 0x3) * 2;
+        x           = x >> 2;
+
+        /*Get the current pixel.
+         *dsc->header.w + 3 means rounding up to 4 because the lines are byte aligned
+         *so the possible real width are 4, 8 ,12 ...*/
+        uint32_t px = ((dsc->header.w + 3) >> 2) * y + x;
+
+        buf_u8[px] = buf_u8[px] & ~(3 << (6 - bit));
+        buf_u8[px] = buf_u8[px] | ((c.full & 0x3) << (6 - bit));
+    }
+    else if(dsc->header.cf == LV_IMG_CF_INDEXED_4BIT) {
+        buf_u8 += sizeof(lv_color32_t) * 16; /*Skip the palette*/
+        uint8_t bit = (x & 0x1) * 4;
+        x           = x >> 1;
+
+        /*Get the current pixel.
+         *dsc->header.w + 1 means rounding up to 2 because the lines are byte aligned
+         *so the possible real width are 2 ,4, 6 ...*/
+        uint32_t px = ((dsc->header.w + 1) >> 1) * y + x;
+        buf_u8[px]  = buf_u8[px] & ~(0xF << (4 - bit));
+        buf_u8[px]  = buf_u8[px] | ((c.full & 0xF) << (4 - bit));
+    }
+    else if(dsc->header.cf == LV_IMG_CF_INDEXED_8BIT) {
+        buf_u8 += sizeof(lv_color32_t) * 256; /*Skip the palette*/
+        uint32_t px = dsc->header.w * y + x;
+        buf_u8[px]  = c.full;
+    }
+}
+
+/**
+ * Set the palette color of an indexed image. Valid only for `LV_IMG_CF_INDEXED1/2/4/8`
+ * @param dsc pointer to an image descriptor
+ * @param id the palette color to set:
+ *   - for `LV_IMG_CF_INDEXED1`: 0..1
+ *   - for `LV_IMG_CF_INDEXED2`: 0..3
+ *   - for `LV_IMG_CF_INDEXED4`: 0..15
+ *   - for `LV_IMG_CF_INDEXED8`: 0..255
+ * @param c the color to set
+ */
+void lv_img_buf_set_palette(lv_img_dsc_t * dsc, uint8_t id, lv_color_t c)
+{
+    if((dsc->header.cf == LV_IMG_CF_ALPHA_1BIT && id > 1) || (dsc->header.cf == LV_IMG_CF_ALPHA_2BIT && id > 3) ||
+       (dsc->header.cf == LV_IMG_CF_ALPHA_4BIT && id > 15) || (dsc->header.cf == LV_IMG_CF_ALPHA_8BIT)) {
+        LV_LOG_WARN("lv_img_buf_set_px_alpha: invalid 'id'");
+        return;
+    }
+
+    lv_color32_t c32;
+    c32.full      = lv_color_to32(c);
+    uint8_t * buf = (uint8_t *)dsc->data;
+    lv_memcpy_small(&buf[id * sizeof(c32)], &c32, sizeof(c32));
+}
+
+/**
+ * Allocate an image buffer in RAM
+ * @param w width of image
+ * @param h height of image
+ * @param cf a color format (`LV_IMG_CF_...`)
+ * @return an allocated image, or NULL on failure
+ */
+lv_img_dsc_t * lv_img_buf_alloc(lv_coord_t w, lv_coord_t h, lv_img_cf_t cf)
+{
+    /*Allocate image descriptor*/
+    lv_img_dsc_t * dsc = lv_mem_alloc(sizeof(lv_img_dsc_t));
+    if(dsc == NULL)
+        return NULL;
+
+    lv_memset_00(dsc, sizeof(lv_img_dsc_t));
+
+    /*Get image data size*/
+    dsc->data_size = lv_img_buf_get_img_size(w, h, cf);
+    if(dsc->data_size == 0) {
+        lv_mem_free(dsc);
+        return NULL;
+    }
+
+    /*Allocate raw buffer*/
+    dsc->data = lv_mem_alloc(dsc->data_size);
+    if(dsc->data == NULL) {
+        lv_mem_free(dsc);
+        return NULL;
+    }
+    lv_memset_00((uint8_t *)dsc->data, dsc->data_size);
+
+    /*Fill in header*/
+    dsc->header.always_zero = 0;
+    dsc->header.w = w;
+    dsc->header.h = h;
+    dsc->header.cf = cf;
+    return dsc;
+}
+
+/**
+ * Free an allocated image buffer
+ * @param dsc image buffer to free
+ */
+void lv_img_buf_free(lv_img_dsc_t * dsc)
+{
+    if(dsc != NULL) {
+        if(dsc->data != NULL)
+            lv_mem_free((void *)dsc->data);
+
+        lv_mem_free(dsc);
+    }
+}
+
+/**
+ * Get the memory consumption of a raw bitmap, given color format and dimensions.
+ * @param w width
+ * @param h height
+ * @param cf color format
+ * @return size in bytes
+ */
+uint32_t lv_img_buf_get_img_size(lv_coord_t w, lv_coord_t h, lv_img_cf_t cf)
+{
+    switch(cf) {
+        case LV_IMG_CF_TRUE_COLOR:
+            return LV_IMG_BUF_SIZE_TRUE_COLOR(w, h);
+        case LV_IMG_CF_TRUE_COLOR_ALPHA:
+        case LV_IMG_CF_RGB565A8:
+            return LV_IMG_BUF_SIZE_TRUE_COLOR_ALPHA(w, h);
+        case LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED:
+            return LV_IMG_BUF_SIZE_TRUE_COLOR_CHROMA_KEYED(w, h);
+        case LV_IMG_CF_ALPHA_1BIT:
+            return LV_IMG_BUF_SIZE_ALPHA_1BIT(w, h);
+        case LV_IMG_CF_ALPHA_2BIT:
+            return LV_IMG_BUF_SIZE_ALPHA_2BIT(w, h);
+        case LV_IMG_CF_ALPHA_4BIT:
+            return LV_IMG_BUF_SIZE_ALPHA_4BIT(w, h);
+        case LV_IMG_CF_ALPHA_8BIT:
+            return LV_IMG_BUF_SIZE_ALPHA_8BIT(w, h);
+        case LV_IMG_CF_INDEXED_1BIT:
+            return LV_IMG_BUF_SIZE_INDEXED_1BIT(w, h);
+        case LV_IMG_CF_INDEXED_2BIT:
+            return LV_IMG_BUF_SIZE_INDEXED_2BIT(w, h);
+        case LV_IMG_CF_INDEXED_4BIT:
+            return LV_IMG_BUF_SIZE_INDEXED_4BIT(w, h);
+        case LV_IMG_CF_INDEXED_8BIT:
+            return LV_IMG_BUF_SIZE_INDEXED_8BIT(w, h);
+        default:
+            return 0;
+    }
+}
+
+/**
+ * Get the area of a rectangle if its rotated and scaled
+ * @param res store the coordinates here
+ * @param w width of the rectangle to transform
+ * @param h height of the rectangle to transform
+ * @param angle angle of rotation
+ * @param zoom zoom, (256 no zoom)
+ * @param pivot x,y pivot coordinates of rotation
+ */
+void _lv_img_buf_get_transformed_area(lv_area_t * res, lv_coord_t w, lv_coord_t h, int16_t angle, uint16_t zoom,
+                                      const lv_point_t * pivot)
+{
+#if LV_DRAW_COMPLEX
+    if(angle == 0 && zoom == LV_IMG_ZOOM_NONE) {
+        res->x1 = 0;
+        res->y1 = 0;
+        res->x2 = w - 1;
+        res->y2 = h - 1;
+        return;
+    }
+
+    lv_point_t p[4] = {
+        {0, 0},
+        {w, 0},
+        {0, h},
+        {w, h},
+    };
+    lv_point_transform(&p[0], angle, zoom, pivot);
+    lv_point_transform(&p[1], angle, zoom, pivot);
+    lv_point_transform(&p[2], angle, zoom, pivot);
+    lv_point_transform(&p[3], angle, zoom, pivot);
+    res->x1 = LV_MIN4(p[0].x, p[1].x, p[2].x, p[3].x) - 2;
+    res->x2 = LV_MAX4(p[0].x, p[1].x, p[2].x, p[3].x) + 2;
+    res->y1 = LV_MIN4(p[0].y, p[1].y, p[2].y, p[3].y) - 2;
+    res->y2 = LV_MAX4(p[0].y, p[1].y, p[2].y, p[3].y) + 2;
+
+#else
+    LV_UNUSED(angle);
+    LV_UNUSED(zoom);
+    LV_UNUSED(pivot);
+    res->x1 = 0;
+    res->y1 = 0;
+    res->x2 = w - 1;
+    res->y2 = h - 1;
+#endif
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_img_buf.h

@@ -0,0 +1,249 @@
+/**
+ * @file lv_img_buf.h
+ *
+ */
+
+#ifndef LV_IMG_BUF_H
+#define LV_IMG_BUF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include <stdbool.h>
+#include "../misc/lv_color.h"
+#include "../misc/lv_area.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+/*If image pixels contains alpha we need to know how much byte is a pixel*/
+#if LV_COLOR_DEPTH == 1 || LV_COLOR_DEPTH == 8
+#define LV_IMG_PX_SIZE_ALPHA_BYTE 2
+#elif LV_COLOR_DEPTH == 16
+#define LV_IMG_PX_SIZE_ALPHA_BYTE 3
+#elif LV_COLOR_DEPTH == 32
+#define LV_IMG_PX_SIZE_ALPHA_BYTE 4
+#endif
+
+#define LV_IMG_BUF_SIZE_TRUE_COLOR(w, h) ((LV_COLOR_SIZE / 8) * w * h)
+#define LV_IMG_BUF_SIZE_TRUE_COLOR_CHROMA_KEYED(w, h) ((LV_COLOR_SIZE / 8) * w * h)
+#define LV_IMG_BUF_SIZE_TRUE_COLOR_ALPHA(w, h) (LV_IMG_PX_SIZE_ALPHA_BYTE * w * h)
+
+/*+ 1: to be sure no fractional row*/
+#define LV_IMG_BUF_SIZE_ALPHA_1BIT(w, h) ((((w / 8) + 1) * h))
+#define LV_IMG_BUF_SIZE_ALPHA_2BIT(w, h) ((((w / 4) + 1) * h))
+#define LV_IMG_BUF_SIZE_ALPHA_4BIT(w, h) ((((w / 2) + 1) * h))
+#define LV_IMG_BUF_SIZE_ALPHA_8BIT(w, h) ((w * h))
+
+/*4 * X: for palette*/
+#define LV_IMG_BUF_SIZE_INDEXED_1BIT(w, h) (LV_IMG_BUF_SIZE_ALPHA_1BIT(w, h) + 4 * 2)
+#define LV_IMG_BUF_SIZE_INDEXED_2BIT(w, h) (LV_IMG_BUF_SIZE_ALPHA_2BIT(w, h) + 4 * 4)
+#define LV_IMG_BUF_SIZE_INDEXED_4BIT(w, h) (LV_IMG_BUF_SIZE_ALPHA_4BIT(w, h) + 4 * 16)
+#define LV_IMG_BUF_SIZE_INDEXED_8BIT(w, h) (LV_IMG_BUF_SIZE_ALPHA_8BIT(w, h) + 4 * 256)
+
+#define _LV_ZOOM_INV_UPSCALE 5
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/*Image color format*/
+enum {
+    LV_IMG_CF_UNKNOWN = 0,
+
+    LV_IMG_CF_RAW,              /**< Contains the file as it is. Needs custom decoder function*/
+    LV_IMG_CF_RAW_ALPHA,        /**< Contains the file as it is. The image has alpha. Needs custom decoder
+                                   function*/
+    LV_IMG_CF_RAW_CHROMA_KEYED, /**< Contains the file as it is. The image is chroma keyed. Needs
+                                   custom decoder function*/
+
+    LV_IMG_CF_TRUE_COLOR,              /**< Color format and depth should match with LV_COLOR settings*/
+    LV_IMG_CF_TRUE_COLOR_ALPHA,        /**< Same as `LV_IMG_CF_TRUE_COLOR` but every pixel has an alpha byte*/
+    LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED, /**< Same as `LV_IMG_CF_TRUE_COLOR` but LV_COLOR_TRANSP pixels
+                                          will be transparent*/
+
+    LV_IMG_CF_INDEXED_1BIT, /**< Can have 2 different colors in a palette (can't be chroma keyed)*/
+    LV_IMG_CF_INDEXED_2BIT, /**< Can have 4 different colors in a palette (can't be chroma keyed)*/
+    LV_IMG_CF_INDEXED_4BIT, /**< Can have 16 different colors in a palette (can't be chroma keyed)*/
+    LV_IMG_CF_INDEXED_8BIT, /**< Can have 256 different colors in a palette (can't be chroma keyed)*/
+
+    LV_IMG_CF_ALPHA_1BIT, /**< Can have one color and it can be drawn or not*/
+    LV_IMG_CF_ALPHA_2BIT, /**< Can have one color but 4 different alpha value*/
+    LV_IMG_CF_ALPHA_4BIT, /**< Can have one color but 16 different alpha value*/
+    LV_IMG_CF_ALPHA_8BIT, /**< Can have one color but 256 different alpha value*/
+
+    LV_IMG_CF_RGB888,
+    LV_IMG_CF_RGBA8888,
+    LV_IMG_CF_RGBX8888,
+    LV_IMG_CF_RGB565,
+    LV_IMG_CF_RGBA5658,
+    LV_IMG_CF_RGB565A8,
+
+    LV_IMG_CF_RESERVED_15,              /**< Reserved for further use.*/
+    LV_IMG_CF_RESERVED_16,              /**< Reserved for further use.*/
+    LV_IMG_CF_RESERVED_17,              /**< Reserved for further use.*/
+    LV_IMG_CF_RESERVED_18,              /**< Reserved for further use.*/
+    LV_IMG_CF_RESERVED_19,              /**< Reserved for further use.*/
+    LV_IMG_CF_RESERVED_20,              /**< Reserved for further use.*/
+    LV_IMG_CF_RESERVED_21,              /**< Reserved for further use.*/
+    LV_IMG_CF_RESERVED_22,              /**< Reserved for further use.*/
+    LV_IMG_CF_RESERVED_23,              /**< Reserved for further use.*/
+
+    LV_IMG_CF_USER_ENCODED_0,          /**< User holder encoding format.*/
+    LV_IMG_CF_USER_ENCODED_1,          /**< User holder encoding format.*/
+    LV_IMG_CF_USER_ENCODED_2,          /**< User holder encoding format.*/
+    LV_IMG_CF_USER_ENCODED_3,          /**< User holder encoding format.*/
+    LV_IMG_CF_USER_ENCODED_4,          /**< User holder encoding format.*/
+    LV_IMG_CF_USER_ENCODED_5,          /**< User holder encoding format.*/
+    LV_IMG_CF_USER_ENCODED_6,          /**< User holder encoding format.*/
+    LV_IMG_CF_USER_ENCODED_7,          /**< User holder encoding format.*/
+};
+typedef uint8_t lv_img_cf_t;
+
+
+/**
+ * The first 8 bit is very important to distinguish the different source types.
+ * For more info see `lv_img_get_src_type()` in lv_img.c
+ * On big endian systems the order is reversed so cf and always_zero must be at
+ * the end of the struct.
+ */
+#if LV_BIG_ENDIAN_SYSTEM
+typedef struct {
+
+    uint32_t h : 11; /*Height of the image map*/
+    uint32_t w : 11; /*Width of the image map*/
+    uint32_t reserved : 2; /*Reserved to be used later*/
+    uint32_t always_zero : 3; /*It the upper bits of the first byte. Always zero to look like a
+                                 non-printable character*/
+    uint32_t cf : 5;          /*Color format: See `lv_img_color_format_t`*/
+
+} lv_img_header_t;
+#else
+typedef struct {
+
+    uint32_t cf : 5;          /*Color format: See `lv_img_color_format_t`*/
+    uint32_t always_zero : 3; /*It the upper bits of the first byte. Always zero to look like a
+                                 non-printable character*/
+
+    uint32_t reserved : 2; /*Reserved to be used later*/
+
+    uint32_t w : 11; /*Width of the image map*/
+    uint32_t h : 11; /*Height of the image map*/
+} lv_img_header_t;
+#endif
+
+/** Image header it is compatible with
+ * the result from image converter utility*/
+typedef struct {
+    lv_img_header_t header; /**< A header describing the basics of the image*/
+    uint32_t data_size;     /**< Size of the image in bytes*/
+    const uint8_t * data;   /**< Pointer to the data of the image*/
+} lv_img_dsc_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Allocate an image buffer in RAM
+ * @param w width of image
+ * @param h height of image
+ * @param cf a color format (`LV_IMG_CF_...`)
+ * @return an allocated image, or NULL on failure
+ */
+lv_img_dsc_t * lv_img_buf_alloc(lv_coord_t w, lv_coord_t h, lv_img_cf_t cf);
+
+/**
+ * Get the color of an image's pixel
+ * @param dsc an image descriptor
+ * @param x x coordinate of the point to get
+ * @param y x coordinate of the point to get
+ * @param color the color of the image. In case of `LV_IMG_CF_ALPHA_1/2/4/8` this color is used.
+ * Not used in other cases.
+ * @param safe true: check out of bounds
+ * @return color of the point
+ */
+lv_color_t lv_img_buf_get_px_color(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_color_t color);
+
+/**
+ * Get the alpha value of an image's pixel
+ * @param dsc pointer to an image descriptor
+ * @param x x coordinate of the point to set
+ * @param y x coordinate of the point to set
+ * @param safe true: check out of bounds
+ * @return alpha value of the point
+ */
+lv_opa_t lv_img_buf_get_px_alpha(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y);
+
+/**
+ * Set the color of a pixel of an image. The alpha channel won't be affected.
+ * @param dsc pointer to an image descriptor
+ * @param x x coordinate of the point to set
+ * @param y x coordinate of the point to set
+ * @param c color of the point
+ * @param safe true: check out of bounds
+ */
+void lv_img_buf_set_px_color(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_color_t c);
+
+/**
+ * Set the alpha value of a pixel of an image. The color won't be affected
+ * @param dsc pointer to an image descriptor
+ * @param x x coordinate of the point to set
+ * @param y x coordinate of the point to set
+ * @param opa the desired opacity
+ * @param safe true: check out of bounds
+ */
+void lv_img_buf_set_px_alpha(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_opa_t opa);
+
+/**
+ * Set the palette color of an indexed image. Valid only for `LV_IMG_CF_INDEXED1/2/4/8`
+ * @param dsc pointer to an image descriptor
+ * @param id the palette color to set:
+ *   - for `LV_IMG_CF_INDEXED1`: 0..1
+ *   - for `LV_IMG_CF_INDEXED2`: 0..3
+ *   - for `LV_IMG_CF_INDEXED4`: 0..15
+ *   - for `LV_IMG_CF_INDEXED8`: 0..255
+ * @param c the color to set
+ */
+void lv_img_buf_set_palette(lv_img_dsc_t * dsc, uint8_t id, lv_color_t c);
+
+/**
+ * Free an allocated image buffer
+ * @param dsc image buffer to free
+ */
+void lv_img_buf_free(lv_img_dsc_t * dsc);
+
+/**
+ * Get the memory consumption of a raw bitmap, given color format and dimensions.
+ * @param w width
+ * @param h height
+ * @param cf color format
+ * @return size in bytes
+ */
+uint32_t lv_img_buf_get_img_size(lv_coord_t w, lv_coord_t h, lv_img_cf_t cf);
+
+/**
+ * Get the area of a rectangle if its rotated and scaled
+ * @param res store the coordinates here
+ * @param w width of the rectangle to transform
+ * @param h height of the rectangle to transform
+ * @param angle angle of rotation
+ * @param zoom zoom, (256 no zoom)
+ * @param pivot x,y pivot coordinates of rotation
+ */
+void _lv_img_buf_get_transformed_area(lv_area_t * res, lv_coord_t w, lv_coord_t h, int16_t angle, uint16_t zoom,
+                                      const lv_point_t * pivot);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_IMG_BUF_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_img_cache.c

@@ -0,0 +1,215 @@
+/**
+ * @file lv_img_cache.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../misc/lv_assert.h"
+#include "lv_img_cache.h"
+#include "lv_img_decoder.h"
+#include "lv_draw_img.h"
+#include "../hal/lv_hal_tick.h"
+#include "../misc/lv_gc.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+/*Decrement life with this value on every open*/
+#define LV_IMG_CACHE_AGING 1
+
+/*Boost life by this factor (multiply time_to_open with this value)*/
+#define LV_IMG_CACHE_LIFE_GAIN 1
+
+/*Don't let life to be greater than this limit because it would require a lot of time to
+ * "die" from very high values*/
+#define LV_IMG_CACHE_LIFE_LIMIT 1000
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+#if LV_IMG_CACHE_DEF_SIZE
+    static bool lv_img_cache_match(const void * src1, const void * src2);
+#endif
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+#if LV_IMG_CACHE_DEF_SIZE
+    static uint16_t entry_cnt;
+#endif
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Open an image using the image decoder interface and cache it.
+ * The image will be left open meaning if the image decoder open callback allocated memory then it will remain.
+ * The image is closed if a new image is opened and the new image takes its place in the cache.
+ * @param src source of the image. Path to file or pointer to an `lv_img_dsc_t` variable
+ * @param color color The color of the image with `LV_IMG_CF_ALPHA_...`
+ * @return pointer to the cache entry or NULL if can open the image
+ */
+_lv_img_cache_entry_t * _lv_img_cache_open(const void * src, lv_color_t color, int32_t frame_id)
+{
+    /*Is the image cached?*/
+    _lv_img_cache_entry_t * cached_src = NULL;
+
+#if LV_IMG_CACHE_DEF_SIZE
+    if(entry_cnt == 0) {
+        LV_LOG_WARN("lv_img_cache_open: the cache size is 0");
+        return NULL;
+    }
+
+    _lv_img_cache_entry_t * cache = LV_GC_ROOT(_lv_img_cache_array);
+
+    /*Decrement all lifes. Make the entries older*/
+    uint16_t i;
+    for(i = 0; i < entry_cnt; i++) {
+        if(cache[i].life > INT32_MIN + LV_IMG_CACHE_AGING) {
+            cache[i].life -= LV_IMG_CACHE_AGING;
+        }
+    }
+
+    for(i = 0; i < entry_cnt; i++) {
+        if(color.full == cache[i].dec_dsc.color.full &&
+           frame_id == cache[i].dec_dsc.frame_id &&
+           lv_img_cache_match(src, cache[i].dec_dsc.src)) {
+            /*If opened increment its life.
+             *Image difficult to open should live longer to keep avoid frequent their recaching.
+             *Therefore increase `life` with `time_to_open`*/
+            cached_src = &cache[i];
+            cached_src->life += cached_src->dec_dsc.time_to_open * LV_IMG_CACHE_LIFE_GAIN;
+            if(cached_src->life > LV_IMG_CACHE_LIFE_LIMIT) cached_src->life = LV_IMG_CACHE_LIFE_LIMIT;
+            LV_LOG_TRACE("image source found in the cache");
+            break;
+        }
+    }
+
+    /*The image is not cached then cache it now*/
+    if(cached_src) return cached_src;
+
+    /*Find an entry to reuse. Select the entry with the least life*/
+    cached_src = &cache[0];
+    for(i = 1; i < entry_cnt; i++) {
+        if(cache[i].life < cached_src->life) {
+            cached_src = &cache[i];
+        }
+    }
+
+    /*Close the decoder to reuse if it was opened (has a valid source)*/
+    if(cached_src->dec_dsc.src) {
+        lv_img_decoder_close(&cached_src->dec_dsc);
+        LV_LOG_INFO("image draw: cache miss, close and reuse an entry");
+    }
+    else {
+        LV_LOG_INFO("image draw: cache miss, cached to an empty entry");
+    }
+#else
+    cached_src = &LV_GC_ROOT(_lv_img_cache_single);
+#endif
+    /*Open the image and measure the time to open*/
+    uint32_t t_start  = lv_tick_get();
+    lv_res_t open_res = lv_img_decoder_open(&cached_src->dec_dsc, src, color, frame_id);
+    if(open_res == LV_RES_INV) {
+        LV_LOG_WARN("Image draw cannot open the image resource");
+        lv_memset_00(cached_src, sizeof(_lv_img_cache_entry_t));
+        cached_src->life = INT32_MIN; /*Make the empty entry very "weak" to force its us*/
+        return NULL;
+    }
+
+    cached_src->life = 0;
+
+    /*If `time_to_open` was not set in the open function set it here*/
+    if(cached_src->dec_dsc.time_to_open == 0) {
+        cached_src->dec_dsc.time_to_open = lv_tick_elaps(t_start);
+    }
+
+    if(cached_src->dec_dsc.time_to_open == 0) cached_src->dec_dsc.time_to_open = 1;
+
+    return cached_src;
+}
+
+/**
+ * Set the number of images to be cached.
+ * More cached images mean more opened image at same time which might mean more memory usage.
+ * E.g. if 20 PNG or JPG images are open in the RAM they consume memory while opened in the cache.
+ * @param new_entry_cnt number of image to cache
+ */
+void lv_img_cache_set_size(uint16_t new_entry_cnt)
+{
+#if LV_IMG_CACHE_DEF_SIZE == 0
+    LV_UNUSED(new_entry_cnt);
+    LV_LOG_WARN("Can't change cache size because it's disabled by LV_IMG_CACHE_DEF_SIZE = 0");
+#else
+    if(LV_GC_ROOT(_lv_img_cache_array) != NULL) {
+        /*Clean the cache before free it*/
+        lv_img_cache_invalidate_src(NULL);
+        lv_mem_free(LV_GC_ROOT(_lv_img_cache_array));
+    }
+
+    /*Reallocate the cache*/
+    LV_GC_ROOT(_lv_img_cache_array) = lv_mem_alloc(sizeof(_lv_img_cache_entry_t) * new_entry_cnt);
+    LV_ASSERT_MALLOC(LV_GC_ROOT(_lv_img_cache_array));
+    if(LV_GC_ROOT(_lv_img_cache_array) == NULL) {
+        entry_cnt = 0;
+        return;
+    }
+    entry_cnt = new_entry_cnt;
+
+    /*Clean the cache*/
+    lv_memset_00(LV_GC_ROOT(_lv_img_cache_array), entry_cnt * sizeof(_lv_img_cache_entry_t));
+#endif
+}
+
+/**
+ * Invalidate an image source in the cache.
+ * Useful if the image source is updated therefore it needs to be cached again.
+ * @param src an image source path to a file or pointer to an `lv_img_dsc_t` variable.
+ */
+void lv_img_cache_invalidate_src(const void * src)
+{
+    LV_UNUSED(src);
+#if LV_IMG_CACHE_DEF_SIZE
+    _lv_img_cache_entry_t * cache = LV_GC_ROOT(_lv_img_cache_array);
+
+    uint16_t i;
+    for(i = 0; i < entry_cnt; i++) {
+        if(src == NULL || lv_img_cache_match(src, cache[i].dec_dsc.src)) {
+            if(cache[i].dec_dsc.src != NULL) {
+                lv_img_decoder_close(&cache[i].dec_dsc);
+            }
+
+            lv_memset_00(&cache[i], sizeof(_lv_img_cache_entry_t));
+        }
+    }
+#endif
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#if LV_IMG_CACHE_DEF_SIZE
+static bool lv_img_cache_match(const void * src1, const void * src2)
+{
+    lv_img_src_t src_type = lv_img_src_get_type(src1);
+    if(src_type == LV_IMG_SRC_VARIABLE)
+        return src1 == src2;
+    if(src_type != LV_IMG_SRC_FILE)
+        return false;
+    if(lv_img_src_get_type(src2) != LV_IMG_SRC_FILE)
+        return false;
+    return strcmp(src1, src2) == 0;
+}
+#endif

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_img_cache.h

@@ -0,0 +1,78 @@
+/**
+ * @file lv_img_cache.h
+ *
+ */
+
+#ifndef LV_IMG_CACHE_H
+#define LV_IMG_CACHE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_img_decoder.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**
+ * When loading images from the network it can take a long time to download and decode the image.
+ *
+ * To avoid repeating this heavy load images can be cached.
+ */
+typedef struct {
+    lv_img_decoder_dsc_t dec_dsc; /**< Image information*/
+
+    /** Count the cache entries's life. Add `time_to_open` to `life` when the entry is used.
+     * Decrement all lifes by one every in every ::lv_img_cache_open.
+     * If life == 0 the entry can be reused*/
+    int32_t life;
+} _lv_img_cache_entry_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Open an image using the image decoder interface and cache it.
+ * The image will be left open meaning if the image decoder open callback allocated memory then it will remain.
+ * The image is closed if a new image is opened and the new image takes its place in the cache.
+ * @param src source of the image. Path to file or pointer to an `lv_img_dsc_t` variable
+ * @param color The color of the image with `LV_IMG_CF_ALPHA_...`
+ * @param frame_id the index of the frame. Used only with animated images, set 0 for normal images
+ * @return pointer to the cache entry or NULL if can open the image
+ */
+_lv_img_cache_entry_t * _lv_img_cache_open(const void * src, lv_color_t color, int32_t frame_id);
+
+/**
+ * Set the number of images to be cached.
+ * More cached images mean more opened image at same time which might mean more memory usage.
+ * E.g. if 20 PNG or JPG images are open in the RAM they consume memory while opened in the cache.
+ * @param new_entry_cnt number of image to cache
+ */
+void lv_img_cache_set_size(uint16_t new_slot_num);
+
+/**
+ * Invalidate an image source in the cache.
+ * Useful if the image source is updated therefore it needs to be cached again.
+ * @param src an image source path to a file or pointer to an `lv_img_dsc_t` variable.
+ */
+void lv_img_cache_invalidate_src(const void * src);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_IMG_CACHE_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_img_decoder.c

@@ -0,0 +1,705 @@
+/**
+ * @file lv_img_decoder.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_img_decoder.h"
+#include "../misc/lv_assert.h"
+#include "../draw/lv_draw_img.h"
+#include "../misc/lv_ll.h"
+#include "../misc/lv_gc.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define CF_BUILT_IN_FIRST   LV_IMG_CF_TRUE_COLOR
+#define CF_BUILT_IN_LAST    LV_IMG_CF_RGB565A8
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    lv_fs_file_t f;
+    lv_color_t * palette;
+    lv_opa_t * opa;
+} lv_img_decoder_built_in_data_t;
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+static lv_res_t lv_img_decoder_built_in_line_true_color(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
+                                                        lv_coord_t len, uint8_t * buf);
+static lv_res_t lv_img_decoder_built_in_line_alpha(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
+                                                   lv_coord_t len, uint8_t * buf);
+static lv_res_t lv_img_decoder_built_in_line_indexed(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
+                                                     lv_coord_t len, uint8_t * buf);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Initialize the image decoder module
+ */
+void _lv_img_decoder_init(void)
+{
+    _lv_ll_init(&LV_GC_ROOT(_lv_img_decoder_ll), sizeof(lv_img_decoder_t));
+
+    lv_img_decoder_t * decoder;
+
+    /*Create a decoder for the built in color format*/
+    decoder = lv_img_decoder_create();
+    LV_ASSERT_MALLOC(decoder);
+    if(decoder == NULL) {
+        LV_LOG_WARN("lv_img_decoder_init: out of memory");
+        return;
+    }
+
+    lv_img_decoder_set_info_cb(decoder, lv_img_decoder_built_in_info);
+    lv_img_decoder_set_open_cb(decoder, lv_img_decoder_built_in_open);
+    lv_img_decoder_set_read_line_cb(decoder, lv_img_decoder_built_in_read_line);
+    lv_img_decoder_set_close_cb(decoder, lv_img_decoder_built_in_close);
+}
+
+/**
+ * Get information about an image.
+ * Try the created image decoder one by one. Once one is able to get info that info will be used.
+ * @param src the image source. E.g. file name or variable.
+ * @param header the image info will be stored here
+ * @return LV_RES_OK: success; LV_RES_INV: wasn't able to get info about the image
+ */
+lv_res_t lv_img_decoder_get_info(const void * src, lv_img_header_t * header)
+{
+    lv_memset_00(header, sizeof(lv_img_header_t));
+
+    if(src == NULL) return LV_RES_INV;
+
+    lv_img_src_t src_type = lv_img_src_get_type(src);
+    if(src_type == LV_IMG_SRC_VARIABLE) {
+        const lv_img_dsc_t * img_dsc = src;
+        if(img_dsc->data == NULL) return LV_RES_INV;
+    }
+
+    lv_res_t res = LV_RES_INV;
+    lv_img_decoder_t * d;
+    _LV_LL_READ(&LV_GC_ROOT(_lv_img_decoder_ll), d) {
+        if(d->info_cb) {
+            res = d->info_cb(d, src, header);
+            if(res == LV_RES_OK) break;
+        }
+    }
+
+    return res;
+}
+
+lv_res_t lv_img_decoder_open(lv_img_decoder_dsc_t * dsc, const void * src, lv_color_t color, int32_t frame_id)
+{
+    lv_memset_00(dsc, sizeof(lv_img_decoder_dsc_t));
+
+    if(src == NULL) return LV_RES_INV;
+    lv_img_src_t src_type = lv_img_src_get_type(src);
+    if(src_type == LV_IMG_SRC_VARIABLE) {
+        const lv_img_dsc_t * img_dsc = src;
+        if(img_dsc->data == NULL) return LV_RES_INV;
+    }
+
+    dsc->color    = color;
+    dsc->src_type = src_type;
+    dsc->frame_id = frame_id;
+
+    if(dsc->src_type == LV_IMG_SRC_FILE) {
+        size_t fnlen = strlen(src);
+        dsc->src = lv_mem_alloc(fnlen + 1);
+        LV_ASSERT_MALLOC(dsc->src);
+        if(dsc->src == NULL) {
+            LV_LOG_WARN("lv_img_decoder_open: out of memory");
+            return LV_RES_INV;
+        }
+        strcpy((char *)dsc->src, src);
+    }
+    else {
+        dsc->src = src;
+    }
+
+    lv_res_t res = LV_RES_INV;
+
+    lv_img_decoder_t * decoder;
+    _LV_LL_READ(&LV_GC_ROOT(_lv_img_decoder_ll), decoder) {
+        /*Info and Open callbacks are required*/
+        if(decoder->info_cb == NULL || decoder->open_cb == NULL) continue;
+
+        res = decoder->info_cb(decoder, src, &dsc->header);
+        if(res != LV_RES_OK) continue;
+
+        dsc->decoder = decoder;
+        res = decoder->open_cb(decoder, dsc);
+
+        /*Opened successfully. It is a good decoder for this image source*/
+        if(res == LV_RES_OK) return res;
+
+        /*Prepare for the next loop*/
+        lv_memset_00(&dsc->header, sizeof(lv_img_header_t));
+
+        dsc->error_msg = NULL;
+        dsc->img_data  = NULL;
+        dsc->user_data = NULL;
+        dsc->time_to_open = 0;
+    }
+
+    if(dsc->src_type == LV_IMG_SRC_FILE)
+        lv_mem_free((void *)dsc->src);
+
+    return res;
+}
+
+/**
+ * Read a line from an opened image
+ * @param dsc pointer to `lv_img_decoder_dsc_t` used in `lv_img_decoder_open`
+ * @param x start X coordinate (from left)
+ * @param y start Y coordinate (from top)
+ * @param len number of pixels to read
+ * @param buf store the data here
+ * @return LV_RES_OK: success; LV_RES_INV: an error occurred
+ */
+lv_res_t lv_img_decoder_read_line(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_coord_t len, uint8_t * buf)
+{
+    lv_res_t res = LV_RES_INV;
+    if(dsc->decoder->read_line_cb) res = dsc->decoder->read_line_cb(dsc->decoder, dsc, x, y, len, buf);
+
+    return res;
+}
+
+/**
+ * Close a decoding session
+ * @param dsc pointer to `lv_img_decoder_dsc_t` used in `lv_img_decoder_open`
+ */
+void lv_img_decoder_close(lv_img_decoder_dsc_t * dsc)
+{
+    if(dsc->decoder) {
+        if(dsc->decoder->close_cb) dsc->decoder->close_cb(dsc->decoder, dsc);
+
+        if(dsc->src_type == LV_IMG_SRC_FILE) {
+            lv_mem_free((void *)dsc->src);
+            dsc->src = NULL;
+        }
+    }
+}
+
+/**
+ * Create a new image decoder
+ * @return pointer to the new image decoder
+ */
+lv_img_decoder_t * lv_img_decoder_create(void)
+{
+    lv_img_decoder_t * decoder;
+    decoder = _lv_ll_ins_head(&LV_GC_ROOT(_lv_img_decoder_ll));
+    LV_ASSERT_MALLOC(decoder);
+    if(decoder == NULL) return NULL;
+
+    lv_memset_00(decoder, sizeof(lv_img_decoder_t));
+
+    return decoder;
+}
+
+/**
+ * Delete an image decoder
+ * @param decoder pointer to an image decoder
+ */
+void lv_img_decoder_delete(lv_img_decoder_t * decoder)
+{
+    _lv_ll_remove(&LV_GC_ROOT(_lv_img_decoder_ll), decoder);
+    lv_mem_free(decoder);
+}
+
+/**
+ * Set a callback to get information about the image
+ * @param decoder pointer to an image decoder
+ * @param info_cb a function to collect info about an image (fill an `lv_img_header_t` struct)
+ */
+void lv_img_decoder_set_info_cb(lv_img_decoder_t * decoder, lv_img_decoder_info_f_t info_cb)
+{
+    decoder->info_cb = info_cb;
+}
+
+/**
+ * Set a callback to open an image
+ * @param decoder pointer to an image decoder
+ * @param open_cb a function to open an image
+ */
+void lv_img_decoder_set_open_cb(lv_img_decoder_t * decoder, lv_img_decoder_open_f_t open_cb)
+{
+    decoder->open_cb = open_cb;
+}
+
+/**
+ * Set a callback to a decoded line of an image
+ * @param decoder pointer to an image decoder
+ * @param read_line_cb a function to read a line of an image
+ */
+void lv_img_decoder_set_read_line_cb(lv_img_decoder_t * decoder, lv_img_decoder_read_line_f_t read_line_cb)
+{
+    decoder->read_line_cb = read_line_cb;
+}
+
+/**
+ * Set a callback to close a decoding session. E.g. close files and free other resources.
+ * @param decoder pointer to an image decoder
+ * @param close_cb a function to close a decoding session
+ */
+void lv_img_decoder_set_close_cb(lv_img_decoder_t * decoder, lv_img_decoder_close_f_t close_cb)
+{
+    decoder->close_cb = close_cb;
+}
+
+/**
+ * Get info about a built-in image
+ * @param decoder the decoder where this function belongs
+ * @param src the image source: pointer to an `lv_img_dsc_t` variable, a file path or a symbol
+ * @param header store the image data here
+ * @return LV_RES_OK: the info is successfully stored in `header`; LV_RES_INV: unknown format or other error.
+ */
+lv_res_t lv_img_decoder_built_in_info(lv_img_decoder_t * decoder, const void * src, lv_img_header_t * header)
+{
+    LV_UNUSED(decoder); /*Unused*/
+
+    lv_img_src_t src_type = lv_img_src_get_type(src);
+    if(src_type == LV_IMG_SRC_VARIABLE) {
+        lv_img_cf_t cf = ((lv_img_dsc_t *)src)->header.cf;
+        if(cf < CF_BUILT_IN_FIRST || cf > CF_BUILT_IN_LAST) return LV_RES_INV;
+
+        header->w  = ((lv_img_dsc_t *)src)->header.w;
+        header->h  = ((lv_img_dsc_t *)src)->header.h;
+        header->cf = ((lv_img_dsc_t *)src)->header.cf;
+    }
+    else if(src_type == LV_IMG_SRC_FILE) {
+        /*Support only "*.bin" files*/
+        if(strcmp(lv_fs_get_ext(src), "bin")) return LV_RES_INV;
+
+        lv_fs_file_t f;
+        lv_fs_res_t res = lv_fs_open(&f, src, LV_FS_MODE_RD);
+        if(res == LV_FS_RES_OK) {
+            uint32_t rn;
+            res = lv_fs_read(&f, header, sizeof(lv_img_header_t), &rn);
+            lv_fs_close(&f);
+            if(res != LV_FS_RES_OK || rn != sizeof(lv_img_header_t)) {
+                LV_LOG_WARN("Image get info get read file header");
+                return LV_RES_INV;
+            }
+        }
+
+        if(header->cf < CF_BUILT_IN_FIRST || header->cf > CF_BUILT_IN_LAST) return LV_RES_INV;
+    }
+    else if(src_type == LV_IMG_SRC_SYMBOL) {
+        /*The size depend on the font but it is unknown here. It should be handled outside of the
+         *function*/
+        header->w = 1;
+        header->h = 1;
+        /*Symbols always have transparent parts. Important because of cover check in the draw
+         *function. The actual value doesn't matter because lv_draw_label will draw it*/
+        header->cf = LV_IMG_CF_ALPHA_1BIT;
+    }
+    else {
+        LV_LOG_WARN("Image get info found unknown src type");
+        return LV_RES_INV;
+    }
+    return LV_RES_OK;
+}
+
+/**
+ * Open a built in image
+ * @param decoder the decoder where this function belongs
+ * @param dsc pointer to decoder descriptor. `src`, `color` are already initialized in it.
+ * @return LV_RES_OK: the info is successfully stored in `header`; LV_RES_INV: unknown format or other error.
+ */
+lv_res_t lv_img_decoder_built_in_open(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc)
+{
+    /*Open the file if it's a file*/
+    if(dsc->src_type == LV_IMG_SRC_FILE) {
+        /*Support only "*.bin" files*/
+        if(strcmp(lv_fs_get_ext(dsc->src), "bin")) return LV_RES_INV;
+
+        lv_fs_file_t f;
+        lv_fs_res_t res = lv_fs_open(&f, dsc->src, LV_FS_MODE_RD);
+        if(res != LV_FS_RES_OK) {
+            LV_LOG_WARN("Built-in image decoder can't open the file");
+            return LV_RES_INV;
+        }
+
+        /*If the file was open successfully save the file descriptor*/
+        if(dsc->user_data == NULL) {
+            dsc->user_data = lv_mem_alloc(sizeof(lv_img_decoder_built_in_data_t));
+            LV_ASSERT_MALLOC(dsc->user_data);
+            if(dsc->user_data == NULL) {
+                LV_LOG_ERROR("img_decoder_built_in_open: out of memory");
+                lv_fs_close(&f);
+                return LV_RES_INV;
+            }
+            lv_memset_00(dsc->user_data, sizeof(lv_img_decoder_built_in_data_t));
+        }
+
+        lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
+        lv_memcpy_small(&user_data->f, &f, sizeof(f));
+    }
+    else if(dsc->src_type == LV_IMG_SRC_VARIABLE) {
+        /*The variables should have valid data*/
+        if(((lv_img_dsc_t *)dsc->src)->data == NULL) {
+            return LV_RES_INV;
+        }
+    }
+
+    lv_img_cf_t cf = dsc->header.cf;
+    /*Process true color formats*/
+    if(cf == LV_IMG_CF_TRUE_COLOR || cf == LV_IMG_CF_TRUE_COLOR_ALPHA ||
+       cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED || cf == LV_IMG_CF_RGB565A8 ||
+       cf == LV_IMG_CF_ALPHA_8BIT) {
+        if(dsc->src_type == LV_IMG_SRC_VARIABLE) {
+            /*In case of uncompressed formats the image stored in the ROM/RAM.
+             *So simply give its pointer*/
+            dsc->img_data = ((lv_img_dsc_t *)dsc->src)->data;
+            return LV_RES_OK;
+        }
+        else {
+            /*If it's a file it need to be read line by line later*/
+            return LV_RES_OK;
+        }
+    }
+    /*Process indexed images. Build a palette*/
+    else if(cf == LV_IMG_CF_INDEXED_1BIT || cf == LV_IMG_CF_INDEXED_2BIT || cf == LV_IMG_CF_INDEXED_4BIT ||
+            cf == LV_IMG_CF_INDEXED_8BIT) {
+        uint8_t px_size       = lv_img_cf_get_px_size(cf);
+        uint32_t palette_size = 1 << px_size;
+
+        /*Allocate the palette*/
+        if(dsc->user_data == NULL) {
+            dsc->user_data = lv_mem_alloc(sizeof(lv_img_decoder_built_in_data_t));
+            LV_ASSERT_MALLOC(dsc->user_data);
+            if(dsc->user_data == NULL) {
+                LV_LOG_ERROR("img_decoder_built_in_open: out of memory");
+                return LV_RES_INV;
+            }
+            lv_memset_00(dsc->user_data, sizeof(lv_img_decoder_built_in_data_t));
+        }
+
+        lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
+        user_data->palette                         = lv_mem_alloc(palette_size * sizeof(lv_color_t));
+        LV_ASSERT_MALLOC(user_data->palette);
+        user_data->opa                             = lv_mem_alloc(palette_size * sizeof(lv_opa_t));
+        LV_ASSERT_MALLOC(user_data->opa);
+        if(user_data->palette == NULL || user_data->opa == NULL) {
+            LV_LOG_ERROR("img_decoder_built_in_open: out of memory");
+            lv_img_decoder_built_in_close(decoder, dsc);
+            return LV_RES_INV;
+        }
+
+        if(dsc->src_type == LV_IMG_SRC_FILE) {
+            /*Read the palette from file*/
+            lv_fs_seek(&user_data->f, 4, LV_FS_SEEK_SET); /*Skip the header*/
+            lv_color32_t cur_color;
+            uint32_t i;
+            for(i = 0; i < palette_size; i++) {
+                lv_fs_read(&user_data->f, &cur_color, sizeof(lv_color32_t), NULL);
+                user_data->palette[i] = lv_color_make(cur_color.ch.red, cur_color.ch.green, cur_color.ch.blue);
+                user_data->opa[i]     = cur_color.ch.alpha;
+            }
+        }
+        else {
+            /*The palette begins in the beginning of the image data. Just point to it.*/
+            lv_color32_t * palette_p = (lv_color32_t *)((lv_img_dsc_t *)dsc->src)->data;
+
+            uint32_t i;
+            for(i = 0; i < palette_size; i++) {
+                user_data->palette[i] = lv_color_make(palette_p[i].ch.red, palette_p[i].ch.green, palette_p[i].ch.blue);
+                user_data->opa[i]     = palette_p[i].ch.alpha;
+            }
+        }
+
+        return LV_RES_OK;
+    }
+    /*Alpha indexed images.*/
+    else if(cf == LV_IMG_CF_ALPHA_1BIT || cf == LV_IMG_CF_ALPHA_2BIT || cf == LV_IMG_CF_ALPHA_4BIT) {
+        return LV_RES_OK; /*Nothing to process*/
+    }
+    /*Unknown format. Can't decode it.*/
+    else {
+        /*Free the potentially allocated memories*/
+        lv_img_decoder_built_in_close(decoder, dsc);
+
+        LV_LOG_WARN("Image decoder open: unknown color format");
+        return LV_RES_INV;
+    }
+}
+
+/**
+ * Decode `len` pixels starting from the given `x`, `y` coordinates and store them in `buf`.
+ * Required only if the "open" function can't return with the whole decoded pixel array.
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor
+ * @param x start x coordinate
+ * @param y start y coordinate
+ * @param len number of pixels to decode
+ * @param buf a buffer to store the decoded pixels
+ * @return LV_RES_OK: ok; LV_RES_INV: failed
+ */
+lv_res_t lv_img_decoder_built_in_read_line(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc, lv_coord_t x,
+                                           lv_coord_t y, lv_coord_t len, uint8_t * buf)
+{
+    LV_UNUSED(decoder); /*Unused*/
+
+    lv_res_t res = LV_RES_INV;
+
+    if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR || dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA ||
+       dsc->header.cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED) {
+        /*For TRUE_COLOR images read line required only for files.
+         *For variables the image data was returned in `open`*/
+        if(dsc->src_type == LV_IMG_SRC_FILE) {
+            res = lv_img_decoder_built_in_line_true_color(dsc, x, y, len, buf);
+        }
+    }
+    else if(dsc->header.cf == LV_IMG_CF_ALPHA_1BIT || dsc->header.cf == LV_IMG_CF_ALPHA_2BIT ||
+            dsc->header.cf == LV_IMG_CF_ALPHA_4BIT || dsc->header.cf == LV_IMG_CF_ALPHA_8BIT) {
+        res = lv_img_decoder_built_in_line_alpha(dsc, x, y, len, buf);
+    }
+    else if(dsc->header.cf == LV_IMG_CF_INDEXED_1BIT || dsc->header.cf == LV_IMG_CF_INDEXED_2BIT ||
+            dsc->header.cf == LV_IMG_CF_INDEXED_4BIT || dsc->header.cf == LV_IMG_CF_INDEXED_8BIT) {
+        res = lv_img_decoder_built_in_line_indexed(dsc, x, y, len, buf);
+    }
+    else {
+        LV_LOG_WARN("Built-in image decoder read not supports the color format");
+        return LV_RES_INV;
+    }
+
+    return res;
+}
+
+/**
+ * Close the pending decoding. Free resources etc.
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor
+ */
+void lv_img_decoder_built_in_close(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc)
+{
+    LV_UNUSED(decoder); /*Unused*/
+
+    lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
+    if(user_data) {
+        if(dsc->src_type == LV_IMG_SRC_FILE) {
+            lv_fs_close(&user_data->f);
+        }
+        if(user_data->palette) lv_mem_free(user_data->palette);
+        if(user_data->opa) lv_mem_free(user_data->opa);
+
+        lv_mem_free(user_data);
+        dsc->user_data = NULL;
+    }
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static lv_res_t lv_img_decoder_built_in_line_true_color(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
+                                                        lv_coord_t len, uint8_t * buf)
+{
+    lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
+    lv_fs_res_t res;
+    uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf);
+
+    uint32_t pos = ((y * dsc->header.w + x) * px_size) >> 3;
+    pos += 4; /*Skip the header*/
+    res = lv_fs_seek(&user_data->f, pos, LV_FS_SEEK_SET);
+    if(res != LV_FS_RES_OK) {
+        LV_LOG_WARN("Built-in image decoder seek failed");
+        return LV_RES_INV;
+    }
+    uint32_t btr = len * (px_size >> 3);
+    uint32_t br  = 0;
+    res = lv_fs_read(&user_data->f, buf, btr, &br);
+    if(res != LV_FS_RES_OK || btr != br) {
+        LV_LOG_WARN("Built-in image decoder read failed");
+        return LV_RES_INV;
+    }
+
+    return LV_RES_OK;
+}
+
+static lv_res_t lv_img_decoder_built_in_line_alpha(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
+                                                   lv_coord_t len, uint8_t * buf)
+{
+    const lv_opa_t alpha1_opa_table[2]  = {0, 255};          /*Opacity mapping with bpp = 1 (Just for compatibility)*/
+    const lv_opa_t alpha2_opa_table[4]  = {0, 85, 170, 255}; /*Opacity mapping with bpp = 2*/
+    const lv_opa_t alpha4_opa_table[16] = {0,  17, 34,  51,  /*Opacity mapping with bpp = 4*/
+                                           68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255
+                                          };
+
+    /*Simply fill the buffer with the color. Later only the alpha value will be modified.*/
+    lv_color_t bg_color = dsc->color;
+    lv_coord_t i;
+    for(i = 0; i < len; i++) {
+#if LV_COLOR_DEPTH == 8 || LV_COLOR_DEPTH == 1
+        buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE] = bg_color.full;
+#elif LV_COLOR_DEPTH == 16
+        /*Because of Alpha byte 16 bit color can start on odd address which can cause crash*/
+        buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE] = bg_color.full & 0xFF;
+        buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE + 1] = (bg_color.full >> 8) & 0xFF;
+#elif LV_COLOR_DEPTH == 32
+        *((uint32_t *)&buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE]) = bg_color.full;
+#else
+#error "Invalid LV_COLOR_DEPTH. Check it in lv_conf.h"
+#endif
+    }
+
+    const lv_opa_t * opa_table = NULL;
+    uint8_t px_size            = lv_img_cf_get_px_size(dsc->header.cf);
+    uint16_t mask              = (1 << px_size) - 1; /*E.g. px_size = 2; mask = 0x03*/
+
+    lv_coord_t w = 0;
+    uint32_t ofs = 0;
+    int8_t pos   = 0;
+    switch(dsc->header.cf) {
+        case LV_IMG_CF_ALPHA_1BIT:
+            w = (dsc->header.w + 7) >> 3; /*E.g. w = 20 -> w = 2 + 1*/
+            ofs += w * y + (x >> 3); /*First pixel*/
+            pos = 7 - (x & 0x7);
+            opa_table = alpha1_opa_table;
+            break;
+        case LV_IMG_CF_ALPHA_2BIT:
+            w = (dsc->header.w + 3) >> 2; /*E.g. w = 13 -> w = 3 + 1 (bytes)*/
+            ofs += w * y + (x >> 2); /*First pixel*/
+            pos = 6 - (x & 0x3) * 2;
+            opa_table = alpha2_opa_table;
+            break;
+        case LV_IMG_CF_ALPHA_4BIT:
+            w = (dsc->header.w + 1) >> 1; /*E.g. w = 13 -> w = 6 + 1 (bytes)*/
+            ofs += w * y + (x >> 1); /*First pixel*/
+            pos = 4 - (x & 0x1) * 4;
+            opa_table = alpha4_opa_table;
+            break;
+        case LV_IMG_CF_ALPHA_8BIT:
+            w = dsc->header.w; /*E.g. x = 7 -> w = 7 (bytes)*/
+            ofs += w * y + x;  /*First pixel*/
+            pos = 0;
+            break;
+    }
+
+    lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
+    uint8_t * fs_buf = lv_mem_buf_get(w);
+    if(fs_buf == NULL) return LV_RES_INV;
+
+    const uint8_t * data_tmp = NULL;
+    if(dsc->src_type == LV_IMG_SRC_VARIABLE) {
+        const lv_img_dsc_t * img_dsc = dsc->src;
+
+        data_tmp = img_dsc->data + ofs;
+    }
+    else {
+        lv_fs_seek(&user_data->f, ofs + 4, LV_FS_SEEK_SET); /*+4 to skip the header*/
+        lv_fs_read(&user_data->f, fs_buf, w, NULL);
+        data_tmp = fs_buf;
+    }
+
+    for(i = 0; i < len; i++) {
+        uint8_t val_act = (*data_tmp >> pos) & mask;
+
+        buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE + LV_IMG_PX_SIZE_ALPHA_BYTE - 1] =
+            dsc->header.cf == LV_IMG_CF_ALPHA_8BIT ? val_act : opa_table[val_act];
+
+        pos -= px_size;
+        if(pos < 0) {
+            pos = 8 - px_size;
+            data_tmp++;
+        }
+    }
+    lv_mem_buf_release(fs_buf);
+    return LV_RES_OK;
+}
+
+static lv_res_t lv_img_decoder_built_in_line_indexed(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
+                                                     lv_coord_t len, uint8_t * buf)
+{
+    uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf);
+    uint16_t mask   = (1 << px_size) - 1; /*E.g. px_size = 2; mask = 0x03*/
+
+    lv_coord_t w = 0;
+    int8_t pos   = 0;
+    uint32_t ofs = 0;
+    switch(dsc->header.cf) {
+        case LV_IMG_CF_INDEXED_1BIT:
+            w = (dsc->header.w + 7) >> 3; /*E.g. w = 20 -> w = 2 + 1*/
+            ofs += w * y + (x >> 3); /*First pixel*/
+            ofs += 8;                /*Skip the palette*/
+            pos = 7 - (x & 0x7);
+            break;
+        case LV_IMG_CF_INDEXED_2BIT:
+            w = (dsc->header.w + 3) >> 2; /*E.g. w = 13 -> w = 3 + 1 (bytes)*/
+            ofs += w * y + (x >> 2); /*First pixel*/
+            ofs += 16;               /*Skip the palette*/
+            pos = 6 - (x & 0x3) * 2;
+            break;
+        case LV_IMG_CF_INDEXED_4BIT:
+            w = (dsc->header.w + 1) >> 1; /*E.g. w = 13 -> w = 6 + 1 (bytes)*/
+            ofs += w * y + (x >> 1); /*First pixel*/
+            ofs += 64;               /*Skip the palette*/
+            pos = 4 - (x & 0x1) * 4;
+            break;
+        case LV_IMG_CF_INDEXED_8BIT:
+            w = dsc->header.w; /*E.g. x = 7 -> w = 7 (bytes)*/
+            ofs += w * y + x;  /*First pixel*/
+            ofs += 1024;       /*Skip the palette*/
+            pos = 0;
+            break;
+    }
+
+    lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
+
+    uint8_t * fs_buf = lv_mem_buf_get(w);
+    if(fs_buf == NULL) return LV_RES_INV;
+    const uint8_t * data_tmp = NULL;
+    if(dsc->src_type == LV_IMG_SRC_VARIABLE) {
+        const lv_img_dsc_t * img_dsc = dsc->src;
+        data_tmp                     = img_dsc->data + ofs;
+    }
+    else {
+        lv_fs_seek(&user_data->f, ofs + 4, LV_FS_SEEK_SET); /*+4 to skip the header*/
+        lv_fs_read(&user_data->f, fs_buf, w, NULL);
+        data_tmp = fs_buf;
+    }
+
+    lv_coord_t i;
+    for(i = 0; i < len; i++) {
+        uint8_t val_act = (*data_tmp >> pos) & mask;
+
+        lv_color_t color = user_data->palette[val_act];
+#if LV_COLOR_DEPTH == 8 || LV_COLOR_DEPTH == 1
+        buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE] = color.full;
+#elif LV_COLOR_DEPTH == 16
+        /*Because of Alpha byte 16 bit color can start on odd address which can cause crash*/
+        buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE] = color.full & 0xFF;
+        buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE + 1] = (color.full >> 8) & 0xFF;
+#elif LV_COLOR_DEPTH == 32
+        *((uint32_t *)&buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE]) = color.full;
+#else
+#error "Invalid LV_COLOR_DEPTH. Check it in lv_conf.h"
+#endif
+        buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE + LV_IMG_PX_SIZE_ALPHA_BYTE - 1] = user_data->opa[val_act];
+
+        pos -= px_size;
+        if(pos < 0) {
+            pos = 8 - px_size;
+            data_tmp++;
+        }
+    }
+    lv_mem_buf_release(fs_buf);
+    return LV_RES_OK;
+}

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/lv_img_decoder.h

@@ -0,0 +1,274 @@
+/**
+ * @file lv_img_decoder.h
+ *
+ */
+
+#ifndef LV_IMG_DECODER_H
+#define LV_IMG_DECODER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_conf_internal.h"
+
+#include <stdint.h>
+#include "lv_img_buf.h"
+#include "../misc/lv_fs.h"
+#include "../misc/lv_types.h"
+#include "../misc/lv_area.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**
+ * Source of image.*/
+enum {
+    LV_IMG_SRC_VARIABLE, /** Binary/C variable*/
+    LV_IMG_SRC_FILE, /** File in filesystem*/
+    LV_IMG_SRC_SYMBOL, /** Symbol (@ref lv_symbol_def.h)*/
+    LV_IMG_SRC_UNKNOWN, /** Unknown source*/
+};
+
+typedef uint8_t lv_img_src_t;
+
+/*Decoder function definitions*/
+struct _lv_img_decoder_dsc_t;
+struct _lv_img_decoder_t;
+
+/**
+ * Get info from an image and store in the `header`
+ * @param src the image source. Can be a pointer to a C array or a file name (Use
+ * `lv_img_src_get_type` to determine the type)
+ * @param header store the info here
+ * @return LV_RES_OK: info written correctly; LV_RES_INV: failed
+ */
+typedef lv_res_t (*lv_img_decoder_info_f_t)(struct _lv_img_decoder_t * decoder, const void * src,
+                                            lv_img_header_t * header);
+
+/**
+ * Open an image for decoding. Prepare it as it is required to read it later
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor. `src`, `color` are already initialized in it.
+ */
+typedef lv_res_t (*lv_img_decoder_open_f_t)(struct _lv_img_decoder_t * decoder, struct _lv_img_decoder_dsc_t * dsc);
+
+/**
+ * Decode `len` pixels starting from the given `x`, `y` coordinates and store them in `buf`.
+ * Required only if the "open" function can't return with the whole decoded pixel array.
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor
+ * @param x start x coordinate
+ * @param y start y coordinate
+ * @param len number of pixels to decode
+ * @param buf a buffer to store the decoded pixels
+ * @return LV_RES_OK: ok; LV_RES_INV: failed
+ */
+typedef lv_res_t (*lv_img_decoder_read_line_f_t)(struct _lv_img_decoder_t * decoder, struct _lv_img_decoder_dsc_t * dsc,
+                                                 lv_coord_t x, lv_coord_t y, lv_coord_t len, uint8_t * buf);
+
+/**
+ * Close the pending decoding. Free resources etc.
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor
+ */
+typedef void (*lv_img_decoder_close_f_t)(struct _lv_img_decoder_t * decoder, struct _lv_img_decoder_dsc_t * dsc);
+
+
+typedef struct _lv_img_decoder_t {
+    lv_img_decoder_info_f_t info_cb;
+    lv_img_decoder_open_f_t open_cb;
+    lv_img_decoder_read_line_f_t read_line_cb;
+    lv_img_decoder_close_f_t close_cb;
+
+#if LV_USE_USER_DATA
+    void * user_data;
+#endif
+} lv_img_decoder_t;
+
+
+/**Describe an image decoding session. Stores data about the decoding*/
+typedef struct _lv_img_decoder_dsc_t {
+    /**The decoder which was able to open the image source*/
+    lv_img_decoder_t * decoder;
+
+    /**The image source. A file path like "S:my_img.png" or pointer to an `lv_img_dsc_t` variable*/
+    const void * src;
+
+    /**Color to draw the image. USed when the image has alpha channel only*/
+    lv_color_t color;
+
+    /**Frame of the image, using with animated images*/
+    int32_t frame_id;
+
+    /**Type of the source: file or variable. Can be set in `open` function if required*/
+    lv_img_src_t src_type;
+
+    /**Info about the opened image: color format, size, etc. MUST be set in `open` function*/
+    lv_img_header_t header;
+
+    /** Pointer to a buffer where the image's data (pixels) are stored in a decoded, plain format.
+     *  MUST be set in `open` function*/
+    const uint8_t * img_data;
+
+    /** How much time did it take to open the image. [ms]
+     *  If not set `lv_img_cache` will measure and set the time to open*/
+    uint32_t time_to_open;
+
+    /**A text to display instead of the image when the image can't be opened.
+     * Can be set in `open` function or set NULL.*/
+    const char * error_msg;
+
+    /**Store any custom data here is required*/
+    void * user_data;
+} lv_img_decoder_dsc_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Initialize the image decoder module
+ */
+void _lv_img_decoder_init(void);
+
+/**
+ * Get information about an image.
+ * Try the created image decoder one by one. Once one is able to get info that info will be used.
+ * @param src the image source. Can be
+ *  1) File name: E.g. "S:folder/img1.png" (The drivers needs to registered via `lv_fs_drv_register()`)
+ *  2) Variable: Pointer to an `lv_img_dsc_t` variable
+ *  3) Symbol: E.g. `LV_SYMBOL_OK`
+ * @param header the image info will be stored here
+ * @return LV_RES_OK: success; LV_RES_INV: wasn't able to get info about the image
+ */
+lv_res_t lv_img_decoder_get_info(const void * src, lv_img_header_t * header);
+
+/**
+ * Open an image.
+ * Try the created image decoders one by one. Once one is able to open the image that decoder is saved in `dsc`
+ * @param dsc describes a decoding session. Simply a pointer to an `lv_img_decoder_dsc_t` variable.
+ * @param src the image source. Can be
+ *  1) File name: E.g. "S:folder/img1.png" (The drivers needs to registered via `lv_fs_drv_register())`)
+ *  2) Variable: Pointer to an `lv_img_dsc_t` variable
+ *  3) Symbol: E.g. `LV_SYMBOL_OK`
+ * @param color The color of the image with `LV_IMG_CF_ALPHA_...`
+ * @param frame_id the index of the frame. Used only with animated images, set 0 for normal images
+ * @return LV_RES_OK: opened the image. `dsc->img_data` and `dsc->header` are set.
+ *         LV_RES_INV: none of the registered image decoders were able to open the image.
+ */
+lv_res_t lv_img_decoder_open(lv_img_decoder_dsc_t * dsc, const void * src, lv_color_t color, int32_t frame_id);
+
+/**
+ * Read a line from an opened image
+ * @param dsc pointer to `lv_img_decoder_dsc_t` used in `lv_img_decoder_open`
+ * @param x start X coordinate (from left)
+ * @param y start Y coordinate (from top)
+ * @param len number of pixels to read
+ * @param buf store the data here
+ * @return LV_RES_OK: success; LV_RES_INV: an error occurred
+ */
+lv_res_t lv_img_decoder_read_line(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_coord_t len,
+                                  uint8_t * buf);
+
+/**
+ * Close a decoding session
+ * @param dsc pointer to `lv_img_decoder_dsc_t` used in `lv_img_decoder_open`
+ */
+void lv_img_decoder_close(lv_img_decoder_dsc_t * dsc);
+
+/**
+ * Create a new image decoder
+ * @return pointer to the new image decoder
+ */
+lv_img_decoder_t * lv_img_decoder_create(void);
+
+/**
+ * Delete an image decoder
+ * @param decoder pointer to an image decoder
+ */
+void lv_img_decoder_delete(lv_img_decoder_t * decoder);
+
+/**
+ * Set a callback to get information about the image
+ * @param decoder pointer to an image decoder
+ * @param info_cb a function to collect info about an image (fill an `lv_img_header_t` struct)
+ */
+void lv_img_decoder_set_info_cb(lv_img_decoder_t * decoder, lv_img_decoder_info_f_t info_cb);
+
+/**
+ * Set a callback to open an image
+ * @param decoder pointer to an image decoder
+ * @param open_cb a function to open an image
+ */
+void lv_img_decoder_set_open_cb(lv_img_decoder_t * decoder, lv_img_decoder_open_f_t open_cb);
+
+/**
+ * Set a callback to a decoded line of an image
+ * @param decoder pointer to an image decoder
+ * @param read_line_cb a function to read a line of an image
+ */
+void lv_img_decoder_set_read_line_cb(lv_img_decoder_t * decoder, lv_img_decoder_read_line_f_t read_line_cb);
+
+/**
+ * Set a callback to close a decoding session. E.g. close files and free other resources.
+ * @param decoder pointer to an image decoder
+ * @param close_cb a function to close a decoding session
+ */
+void lv_img_decoder_set_close_cb(lv_img_decoder_t * decoder, lv_img_decoder_close_f_t close_cb);
+
+/**
+ * Get info about a built-in image
+ * @param decoder the decoder where this function belongs
+ * @param src the image source: pointer to an `lv_img_dsc_t` variable, a file path or a symbol
+ * @param header store the image data here
+ * @return LV_RES_OK: the info is successfully stored in `header`; LV_RES_INV: unknown format or other error.
+ */
+lv_res_t lv_img_decoder_built_in_info(lv_img_decoder_t * decoder, const void * src, lv_img_header_t * header);
+
+/**
+ * Open a built in image
+ * @param decoder the decoder where this function belongs
+ * @param dsc pointer to decoder descriptor. `src`, `style` are already initialized in it.
+ * @return LV_RES_OK: the info is successfully stored in `header`; LV_RES_INV: unknown format or other error.
+ */
+lv_res_t lv_img_decoder_built_in_open(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc);
+
+/**
+ * Decode `len` pixels starting from the given `x`, `y` coordinates and store them in `buf`.
+ * Required only if the "open" function can't return with the whole decoded pixel array.
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor
+ * @param x start x coordinate
+ * @param y start y coordinate
+ * @param len number of pixels to decode
+ * @param buf a buffer to store the decoded pixels
+ * @return LV_RES_OK: ok; LV_RES_INV: failed
+ */
+lv_res_t lv_img_decoder_built_in_read_line(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc, lv_coord_t x,
+                                           lv_coord_t y, lv_coord_t len, uint8_t * buf);
+
+/**
+ * Close the pending decoding. Free resources etc.
+ * @param decoder pointer to the decoder the function associated with
+ * @param dsc pointer to decoder descriptor
+ */
+void lv_img_decoder_built_in_close(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_IMG_DECODER_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/lv_draw_nxp.mk

@@ -0,0 +1,9 @@
+CSRCS += lv_gpu_nxp.c
+
+DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp
+VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp
+
+CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp"
+
+include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp/pxp/lv_draw_nxp_pxp.mk
+include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp/vglite/lv_draw_nxp_vglite.mk

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/lv_gpu_nxp.c

@@ -0,0 +1,418 @@
+/**
+ * @file lv_gpu_nxp.c
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "lv_gpu_nxp.h"
+
+#if LV_USE_GPU_NXP_PXP || LV_USE_GPU_NXP_VG_LITE
+
+/*
+ * allow to use both PXP and VGLITE
+
+ * both 2D accelerators can be used at the same time:
+ * thus VGLITE can be used to accelerate widget drawing
+ * while PXP accelerates Blit & Fill operations.
+ */
+#if LV_USE_GPU_NXP_PXP
+    #include "pxp/lv_draw_pxp_blend.h"
+#endif
+#if LV_USE_GPU_NXP_VG_LITE
+    #include "vglite/lv_draw_vglite_blend.h"
+    #include "vglite/lv_draw_vglite_rect.h"
+    #include "vglite/lv_draw_vglite_arc.h"
+#endif
+
+#if LV_COLOR_DEPTH != 32
+    #include "../../core/lv_refr.h"
+#endif
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static void lv_draw_nxp_img_decoded(lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * dsc,
+                                    const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t cf);
+
+static void lv_draw_nxp_blend(lv_draw_ctx_t * draw_ctx, const lv_draw_sw_blend_dsc_t * dsc);
+
+static void lv_draw_nxp_rect(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
+
+static lv_res_t draw_nxp_bg(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
+
+static void lv_draw_nxp_arc(lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center,
+                            uint16_t radius, uint16_t start_angle, uint16_t end_angle);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_nxp_ctx_init(lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx)
+{
+    lv_draw_sw_init_ctx(drv, draw_ctx);
+
+    lv_draw_nxp_ctx_t * nxp_draw_ctx = (lv_draw_sw_ctx_t *)draw_ctx;
+
+    nxp_draw_ctx->base_draw.draw_arc = lv_draw_nxp_arc;
+    nxp_draw_ctx->base_draw.draw_rect = lv_draw_nxp_rect;
+    nxp_draw_ctx->base_draw.draw_img_decoded = lv_draw_nxp_img_decoded;
+    nxp_draw_ctx->blend = lv_draw_nxp_blend;
+    //nxp_draw_ctx->base_draw.wait_for_finish = lv_draw_nxp_wait_cb;
+}
+
+void lv_draw_nxp_ctx_deinit(lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx)
+{
+    lv_draw_sw_deinit_ctx(drv, draw_ctx);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+/**
+ * During rendering, LVGL might initializes new draw_ctxs and start drawing into
+ * a separate buffer (called layer). If the content to be rendered has "holes",
+ * e.g. rounded corner, LVGL temporarily sets the disp_drv.screen_transp flag.
+ * It means the renderers should draw into an ARGB buffer.
+ * With 32 bit color depth it's not a big problem but with 16 bit color depth
+ * the target pixel format is ARGB8565 which is not supported by the GPU.
+ * In this case, the NXP callbacks should fallback to SW rendering.
+ */
+static inline bool need_argb8565_support()
+{
+#if LV_COLOR_DEPTH != 32
+    lv_disp_t * disp = _lv_refr_get_disp_refreshing();
+
+    if(disp->driver->screen_transp == 1)
+        return true;
+#endif
+
+    return false;
+}
+
+static void lv_draw_nxp_blend(lv_draw_ctx_t * draw_ctx, const lv_draw_sw_blend_dsc_t * dsc)
+{
+    lv_area_t blend_area;
+
+    /*Let's get the blend area which is the intersection of the area to fill and the clip area.*/
+    if(!_lv_area_intersect(&blend_area, dsc->blend_area, draw_ctx->clip_area))
+        return; /*Fully clipped, nothing to do*/
+
+    /*Make the blend area relative to the buffer*/
+    lv_area_move(&blend_area, -draw_ctx->buf_area->x1, -draw_ctx->buf_area->y1);
+
+    bool done = false;
+
+    /*Fill/Blend only non masked, normal blended*/
+    if(dsc->mask_buf == NULL && dsc->blend_mode == LV_BLEND_MODE_NORMAL && !need_argb8565_support()) {
+        lv_color_t * dest_buf = draw_ctx->buf;
+        lv_coord_t dest_stride = lv_area_get_width(draw_ctx->buf_area);
+#if LV_USE_GPU_NXP_VG_LITE
+        lv_coord_t dest_width = lv_area_get_width(draw_ctx->buf_area);
+        lv_coord_t dest_height = lv_area_get_height(draw_ctx->buf_area);
+#endif
+
+        const lv_color_t * src_buf = dsc->src_buf;
+
+        if(src_buf == NULL) {
+#if LV_USE_GPU_NXP_PXP
+            done = (lv_gpu_nxp_pxp_fill(dest_buf, dest_stride, &blend_area,
+                                        dsc->color, dsc->opa) == LV_RES_OK);
+            if(!done)
+                PXP_LOG_TRACE("PXP fill failed. Fallback.");
+
+#endif
+#if LV_USE_GPU_NXP_VG_LITE
+            if(!done) {
+                done = (lv_gpu_nxp_vglite_fill(dest_buf, dest_width, dest_height, &blend_area,
+                                               dsc->color, dsc->opa) == LV_RES_OK);
+                if(!done)
+                    VG_LITE_LOG_TRACE("VG-Lite fill failed. Fallback.");
+            }
+#endif
+        }
+        else {
+#if LV_USE_GPU_NXP_PXP
+            done = (lv_gpu_nxp_pxp_blit(dest_buf, &blend_area, dest_stride, src_buf, dsc->blend_area,
+                                        dsc->opa, LV_DISP_ROT_NONE) == LV_RES_OK);
+            if(!done)
+                PXP_LOG_TRACE("PXP blit failed. Fallback.");
+#endif
+#if LV_USE_GPU_NXP_VG_LITE
+            if(!done) {
+                lv_gpu_nxp_vglite_blit_info_t blit;
+                lv_coord_t src_stride = lv_area_get_width(dsc->blend_area);
+
+                blit.src = src_buf;
+                blit.src_width = lv_area_get_width(dsc->blend_area);
+                blit.src_height = lv_area_get_height(dsc->blend_area);
+                blit.src_stride = src_stride * (int32_t)sizeof(lv_color_t);
+                blit.src_area.x1 = (blend_area.x1 - (dsc->blend_area->x1 - draw_ctx->buf_area->x1));
+                blit.src_area.y1 = (blend_area.y1 - (dsc->blend_area->y1 - draw_ctx->buf_area->y1));
+                blit.src_area.x2 = blit.src_area.x1 + blit.src_width - 1;
+                blit.src_area.y2 = blit.src_area.y1 + blit.src_height - 1;
+
+                blit.dst = dest_buf;
+                blit.dst_width = dest_width;
+                blit.dst_height = dest_height;
+                blit.dst_stride = dest_stride * (int32_t)sizeof(lv_color_t);
+                blit.dst_area.x1 = blend_area.x1;
+                blit.dst_area.y1 = blend_area.y1;
+                blit.dst_area.x2 = blend_area.x2;
+                blit.dst_area.y2 = blend_area.y2;
+
+                blit.opa = dsc->opa;
+                blit.zoom = LV_IMG_ZOOM_NONE;
+                blit.angle = 0;
+
+                done = (lv_gpu_nxp_vglite_blit(&blit) == LV_RES_OK);
+
+                if(!done)
+                    VG_LITE_LOG_TRACE("VG-Lite blit failed. Fallback.");
+            }
+#endif
+        }
+    }
+
+    if(!done)
+        lv_draw_sw_blend_basic(draw_ctx, dsc);
+}
+
+static void lv_draw_nxp_img_decoded(lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * dsc,
+                                    const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t cf)
+{
+    /*Use the clip area as draw area*/
+    lv_area_t draw_area;
+    lv_area_copy(&draw_area, draw_ctx->clip_area);
+    bool mask_any = lv_draw_mask_is_any(&draw_area);
+#if LV_USE_GPU_NXP_VG_LITE
+    bool recolor = (dsc->recolor_opa != LV_OPA_TRANSP);
+#endif
+#if LV_USE_GPU_NXP_PXP
+    bool scale = (dsc->zoom != LV_IMG_ZOOM_NONE);
+#endif
+    bool done = false;
+
+    lv_area_t blend_area;
+    /*Let's get the blend area which is the intersection of the area to fill and the clip area.*/
+    if(!_lv_area_intersect(&blend_area, coords, draw_ctx->clip_area))
+        return; /*Fully clipped, nothing to do*/
+
+    /*Make the blend area relative to the buffer*/
+    lv_area_move(&blend_area, -draw_ctx->buf_area->x1, -draw_ctx->buf_area->y1);
+
+    const lv_color_t * src_buf = (const lv_color_t *)map_p;
+    if(!src_buf) {
+        lv_draw_sw_img_decoded(draw_ctx, dsc, coords, map_p, cf);
+        return;
+    }
+
+    lv_color_t * dest_buf = draw_ctx->buf;
+    lv_coord_t dest_stride = lv_area_get_width(draw_ctx->buf_area);
+
+#if LV_USE_GPU_NXP_PXP
+    if(!mask_any && !scale && !need_argb8565_support()
+#if LV_COLOR_DEPTH!=32
+       && !lv_img_cf_has_alpha(cf)
+#endif
+      ) {
+        done = (lv_gpu_nxp_pxp_blit_transform(dest_buf, &blend_area, dest_stride, src_buf, coords,
+                                              dsc, cf) == LV_RES_OK);
+        if(!done)
+            PXP_LOG_TRACE("PXP blit transform failed. Fallback.");
+    }
+#endif
+
+#if LV_USE_GPU_NXP_VG_LITE
+    if(!done && !mask_any && !need_argb8565_support() &&
+       !lv_img_cf_is_chroma_keyed(cf) && !recolor
+#if LV_COLOR_DEPTH!=32
+       && !lv_img_cf_has_alpha(cf)
+#endif
+      ) {
+        lv_gpu_nxp_vglite_blit_info_t blit;
+        lv_coord_t src_stride = lv_area_get_width(coords);
+
+        blit.src = src_buf;
+        blit.src_width = lv_area_get_width(coords);
+        blit.src_height = lv_area_get_height(coords);
+        blit.src_stride = src_stride * (int32_t)sizeof(lv_color_t);
+        blit.src_area.x1 = (blend_area.x1 - (coords->x1 - draw_ctx->buf_area->x1));
+        blit.src_area.y1 = (blend_area.y1 - (coords->y1 - draw_ctx->buf_area->y1));
+        blit.src_area.x2 = blit.src_area.x1 + blit.src_width - 1;
+        blit.src_area.y2 = blit.src_area.y1 + blit.src_height - 1;
+
+        blit.dst = dest_buf;
+        blit.dst_width = lv_area_get_width(draw_ctx->buf_area);
+        blit.dst_height = lv_area_get_height(draw_ctx->buf_area);
+        blit.dst_stride = dest_stride * (int32_t)sizeof(lv_color_t);
+        blit.dst_area.x1 = blend_area.x1;
+        blit.dst_area.y1 = blend_area.y1;
+        blit.dst_area.x2 = blend_area.x2;
+        blit.dst_area.y2 = blend_area.y2;
+
+        blit.opa = dsc->opa;
+        blit.angle = dsc->angle;
+        blit.pivot = dsc->pivot;
+        blit.zoom = dsc->zoom;
+
+        done = (lv_gpu_nxp_vglite_blit_transform(&blit) == LV_RES_OK);
+
+        if(!done)
+            VG_LITE_LOG_TRACE("VG-Lite blit transform failed. Fallback.");
+    }
+#endif
+
+    if(!done)
+        lv_draw_sw_img_decoded(draw_ctx, dsc, coords, map_p, cf);
+}
+
+static void lv_draw_nxp_rect(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
+{
+    bool done = false;
+    lv_draw_rect_dsc_t nxp_dsc;
+
+    lv_memcpy(&nxp_dsc, dsc, sizeof(nxp_dsc));
+#if LV_DRAW_COMPLEX
+    /* Draw only the shadow */
+    nxp_dsc.bg_opa = 0;
+    nxp_dsc.bg_img_opa = 0;
+    nxp_dsc.border_opa = 0;
+    nxp_dsc.outline_opa = 0;
+
+    lv_draw_sw_rect(draw_ctx, &nxp_dsc, coords);
+
+    /* Draw the background */
+    nxp_dsc.shadow_opa = 0;
+    nxp_dsc.bg_opa = dsc->bg_opa;
+    done = (draw_nxp_bg(draw_ctx, &nxp_dsc, coords) == LV_RES_OK);
+#endif /*LV_DRAW_COMPLEX*/
+
+    /* Draw the remaining parts */
+    nxp_dsc.shadow_opa = 0;
+    if(done)
+        nxp_dsc.bg_opa = 0;
+    nxp_dsc.bg_img_opa = dsc->bg_img_opa;
+    nxp_dsc.border_opa = dsc->border_opa;
+    nxp_dsc.outline_opa = dsc->outline_opa;
+
+    lv_draw_sw_rect(draw_ctx, &nxp_dsc, coords);
+}
+
+static lv_res_t draw_nxp_bg(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
+{
+    if(dsc->bg_opa <= LV_OPA_MIN)
+        return LV_RES_INV;
+
+    lv_area_t bg_coords;
+    lv_area_copy(&bg_coords, coords);
+
+    /*If the border fully covers make the bg area 1px smaller to avoid artifacts on the corners*/
+    if(dsc->border_width > 1 && dsc->border_opa >= (lv_opa_t)LV_OPA_MAX && dsc->radius != 0) {
+        bg_coords.x1 += (dsc->border_side & LV_BORDER_SIDE_LEFT) ? 1 : 0;
+        bg_coords.y1 += (dsc->border_side & LV_BORDER_SIDE_TOP) ? 1 : 0;
+        bg_coords.x2 -= (dsc->border_side & LV_BORDER_SIDE_RIGHT) ? 1 : 0;
+        bg_coords.y2 -= (dsc->border_side & LV_BORDER_SIDE_BOTTOM) ? 1 : 0;
+    }
+
+    lv_area_t clipped_coords;
+    if(!_lv_area_intersect(&clipped_coords, &bg_coords, draw_ctx->clip_area))
+        return LV_RES_INV;
+
+    lv_grad_dir_t grad_dir = dsc->bg_grad.dir;
+    lv_color_t bg_color    = grad_dir == LV_GRAD_DIR_NONE ? dsc->bg_color : dsc->bg_grad.stops[0].color;
+    if(bg_color.full == dsc->bg_grad.stops[1].color.full) grad_dir = LV_GRAD_DIR_NONE;
+
+    bool mask_any = lv_draw_mask_is_any(&bg_coords);
+
+    /*
+     * Most simple case: just a plain rectangle (no mask, no radius, no gradient)
+     * shall fallback to lv_draw_sw_blend().
+     *
+     * Complex case: gradient or radius but no mask.
+     */
+    if(!mask_any && ((dsc->radius != 0) || (grad_dir != LV_GRAD_DIR_NONE)) && !need_argb8565_support()) {
+#if LV_USE_GPU_NXP_VG_LITE
+        lv_res_t res = lv_gpu_nxp_vglite_draw_bg(draw_ctx, dsc, &bg_coords);
+        if(res != LV_RES_OK)
+            VG_LITE_LOG_TRACE("VG-Lite draw bg failed. Fallback.");
+
+        return res;
+#endif
+    }
+
+    return LV_RES_INV;
+}
+
+static void lv_draw_nxp_arc(lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center,
+                            uint16_t radius, uint16_t start_angle, uint16_t end_angle)
+{
+    bool done = false;
+
+#if LV_DRAW_COMPLEX
+    if(dsc->opa <= LV_OPA_MIN)
+        return;
+    if(dsc->width == 0)
+        return;
+    if(start_angle == end_angle)
+        return;
+
+#if LV_USE_GPU_NXP_VG_LITE
+    if(!need_argb8565_support()) {
+        done = (lv_gpu_nxp_vglite_draw_arc(draw_ctx, dsc, center, (int32_t)radius,
+                                           (int32_t)start_angle, (int32_t)end_angle) == LV_RES_OK);
+        if(!done)
+            VG_LITE_LOG_TRACE("VG-Lite draw arc failed. Fallback.");
+    }
+#endif
+#endif/*LV_DRAW_COMPLEX*/
+
+    if(!done)
+        lv_draw_sw_arc(draw_ctx, dsc, center, radius, start_angle, end_angle);
+}
+
+#endif /*LV_USE_GPU_NXP_PXP || LV_USE_GPU_NXP_VG_LITE*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/lv_gpu_nxp.h

@@ -0,0 +1,71 @@
+/**
+ * @file lv_gpu_nxp.h
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef LV_GPU_NXP_H
+#define LV_GPU_NXP_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../lv_conf_internal.h"
+#if LV_USE_GPU_NXP_PXP || LV_USE_GPU_NXP_VG_LITE
+#include "../sw/lv_draw_sw.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+typedef lv_draw_sw_ctx_t lv_draw_nxp_ctx_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void lv_draw_nxp_ctx_init(struct _lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx);
+
+void lv_draw_nxp_ctx_deinit(struct _lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx);
+
+/**********************
+ *      MACROS
+ **********************/
+#endif /*LV_USE_GPU_NXP_PXP || LV_USE_GPU_NXP_VG_LITE*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_GPU_NXP_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/pxp/lv_draw_nxp_pxp.mk

@@ -0,0 +1,8 @@
+CSRCS += lv_draw_pxp_blend.c
+CSRCS += lv_gpu_nxp_pxp_osa.c
+CSRCS += lv_gpu_nxp_pxp.c
+
+DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp/pxp
+VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp/pxp
+
+CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp/pxp"

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/pxp/lv_draw_pxp_blend.c

@@ -0,0 +1,632 @@
+/**
+ * @file lv_draw_pxp_blend.c
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2020-2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "lv_draw_pxp_blend.h"
+
+#if LV_USE_GPU_NXP_PXP
+
+/*********************
+ *      DEFINES
+ *********************/
+
+#if LV_COLOR_16_SWAP
+    #error Color swap not implemented. Disable LV_COLOR_16_SWAP feature.
+#endif
+
+#if LV_COLOR_DEPTH==16
+    #define PXP_OUT_PIXEL_FORMAT kPXP_OutputPixelFormatRGB565
+    #define PXP_AS_PIXEL_FORMAT kPXP_AsPixelFormatRGB565
+    #define PXP_PS_PIXEL_FORMAT kPXP_PsPixelFormatRGB565
+#elif LV_COLOR_DEPTH==32
+    #define PXP_OUT_PIXEL_FORMAT kPXP_OutputPixelFormatARGB8888
+    #define PXP_AS_PIXEL_FORMAT kPXP_AsPixelFormatARGB8888
+    #define PXP_PS_PIXEL_FORMAT kPXP_PsPixelFormatRGB888
+#elif
+    #error Only 16bit and 32bit color depth are supported. Set LV_COLOR_DEPTH to 16 or 32.
+#endif
+
+#if defined (__alpha__) || defined (__ia64__) || defined (__x86_64__) \
+    || defined (_WIN64) || defined (__LP64__) || defined (__LLP64__)
+    #define ALIGN_SIZE 8
+#else
+    #define ALIGN_SIZE 4
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**
+ * BLock Image Transfer - copy rectangular image from src buffer to dst buffer
+ * with combination of transformation (rotation, scale, recolor) and opacity, alpha channel
+ * or color keying. This requires two steps. First step is used for transformation into
+ * a temporary buffer and the second one will handle the color format or opacity.
+ *
+ * @param[in/out] dest_buf destination buffer
+ * @param[in] dest_area area to be copied from src_buf to dst_buf
+ * @param[in] dest_stride width (stride) of destination buffer in pixels
+ * @param[in] src_buf source buffer
+ * @param[in] src_area source area with absolute coordinates to draw on destination buffer
+ * @param[in] dsc image descriptor
+ * @param[in] cf color format
+ * @retval LV_RES_OK Fill completed
+ * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_PXP_LOG_ERRORS)
+ */
+static lv_res_t lv_gpu_nxp_pxp_blit_opa(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
+                                        const lv_color_t * src_buf, const lv_area_t * src_area,
+                                        const lv_draw_img_dsc_t * dsc, lv_img_cf_t cf);
+
+/**
+ * BLock Image Transfer - copy rectangular image from src buffer to dst buffer
+ * with transformation and full opacity.
+ *
+ * @param[in/out] dest_buf destination buffer
+ * @param[in] dest_area area to be copied from src_buf to dst_buf
+ * @param[in] dest_stride width (stride) of destination buffer in pixels
+ * @param[in] src_buf source buffer
+ * @param[in] src_area source area with absolute coordinates to draw on destination buffer
+ * @param[in] dsc image descriptor
+ * @param[in] cf color format
+ * @retval LV_RES_OK Fill completed
+ * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_PXP_LOG_ERRORS)
+ */
+static lv_res_t lv_gpu_nxp_pxp_blit_cover(lv_color_t * dest_buf, const lv_area_t * dest_area,
+                                          lv_coord_t dest_stride,
+                                          const lv_color_t * src_buf, const lv_area_t * src_area,
+                                          const lv_draw_img_dsc_t * dsc, lv_img_cf_t cf);
+
+/**
+ * BLock Image Transfer - copy rectangular image from src buffer to dst buffer
+ * without transformation but handling color format or opacity.
+ *
+ * @param[in/out] dest_buf destination buffer
+ * @param[in] dest_area area to be copied from src_buf to dst_buf
+ * @param[in] dest_stride width (stride) of destination buffer in pixels
+ * @param[in] src_buf source buffer
+ * @param[in] src_area source area with absolute coordinates to draw on destination buffer
+ * @param[in] dsc image descriptor
+ * @param[in] cf color format
+ * @retval LV_RES_OK Fill completed
+ * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_PXP_LOG_ERRORS)
+ */
+static lv_res_t lv_gpu_nxp_pxp_blit_cf(lv_color_t * dest_buf, const lv_area_t * dest_area,
+                                       lv_coord_t dest_stride,
+                                       const lv_color_t * src_buf, const lv_area_t * src_area,
+                                       const lv_draw_img_dsc_t * dsc, lv_img_cf_t cf);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+#define ROUND_UP(x, align) ((x + (align - 1)) & ~(align - 1))
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_res_t lv_gpu_nxp_pxp_fill(lv_color_t * dest_buf, lv_coord_t dest_stride, const lv_area_t * fill_area,
+                             lv_color_t color, lv_opa_t opa)
+{
+    uint32_t area_size = lv_area_get_size(fill_area);
+    lv_coord_t area_w = lv_area_get_width(fill_area);
+    lv_coord_t area_h = lv_area_get_height(fill_area);
+
+    if(opa >= (lv_opa_t)LV_OPA_MAX) {
+        if(area_size < LV_GPU_NXP_PXP_FILL_SIZE_LIMIT) {
+            PXP_LOG_TRACE("Area size %d smaller than limit %d.", area_size, LV_GPU_NXP_PXP_FILL_SIZE_LIMIT);
+            return LV_RES_INV;
+        }
+    }
+    else {
+        if(area_size < LV_GPU_NXP_PXP_FILL_OPA_SIZE_LIMIT) {
+            PXP_LOG_TRACE("Area size %d smaller than limit %d.", area_size, LV_GPU_NXP_PXP_FILL_OPA_SIZE_LIMIT);
+            return LV_RES_INV;
+        }
+    }
+
+    PXP_Init(LV_GPU_NXP_PXP_ID);
+    PXP_EnableCsc1(LV_GPU_NXP_PXP_ID, false); /*Disable CSC1, it is enabled by default.*/
+    PXP_SetProcessBlockSize(LV_GPU_NXP_PXP_ID, kPXP_BlockSize16); /*Block size 16x16 for higher performance*/
+
+    /*OUT buffer configure*/
+    pxp_output_buffer_config_t outputConfig = {
+        .pixelFormat = PXP_OUT_PIXEL_FORMAT,
+        .interlacedMode = kPXP_OutputProgressive,
+        .buffer0Addr = (uint32_t)(dest_buf + dest_stride * fill_area->y1 + fill_area->x1),
+        .buffer1Addr = (uint32_t)NULL,
+        .pitchBytes = dest_stride * sizeof(lv_color_t),
+        .width = area_w,
+        .height = area_h
+    };
+
+    PXP_SetOutputBufferConfig(LV_GPU_NXP_PXP_ID, &outputConfig);
+
+    if(opa >= (lv_opa_t)LV_OPA_MAX) {
+        /*Simple color fill without opacity - AS disabled*/
+        PXP_SetAlphaSurfacePosition(LV_GPU_NXP_PXP_ID, 0xFFFFU, 0xFFFFU, 0U, 0U);
+
+    }
+    else {
+        /*Fill with opacity - AS used as source (same as OUT)*/
+        pxp_as_buffer_config_t asBufferConfig = {
+            .pixelFormat = PXP_AS_PIXEL_FORMAT,
+            .bufferAddr = (uint32_t)outputConfig.buffer0Addr,
+            .pitchBytes = outputConfig.pitchBytes
+        };
+
+        PXP_SetAlphaSurfaceBufferConfig(LV_GPU_NXP_PXP_ID, &asBufferConfig);
+        PXP_SetAlphaSurfacePosition(LV_GPU_NXP_PXP_ID, 0U, 0U, area_w, area_h);
+    }
+
+    /*Disable PS, use as color generator*/
+    PXP_SetProcessSurfacePosition(LV_GPU_NXP_PXP_ID, 0xFFFFU, 0xFFFFU, 0U, 0U);
+    PXP_SetProcessSurfaceBackGroundColor(LV_GPU_NXP_PXP_ID, lv_color_to32(color));
+
+    /**
+     * Configure Porter-Duff blending - src settings are unused for fill without opacity (opa = 0xff).
+     *
+     * Note: srcFactorMode and dstFactorMode are inverted in fsl_pxp.h:
+     * srcFactorMode is actually applied on PS alpha value
+     * dstFactorMode is actually applied on AS alpha value
+     */
+    pxp_porter_duff_config_t pdConfig = {
+        .enable = 1,
+        .dstColorMode = kPXP_PorterDuffColorNoAlpha,
+        .srcColorMode = kPXP_PorterDuffColorNoAlpha,
+        .dstGlobalAlphaMode = kPXP_PorterDuffGlobalAlpha,
+        .srcGlobalAlphaMode = kPXP_PorterDuffGlobalAlpha,
+        .dstFactorMode = kPXP_PorterDuffFactorStraight,
+        .srcFactorMode = (opa >= (lv_opa_t)LV_OPA_MAX) ? kPXP_PorterDuffFactorStraight : kPXP_PorterDuffFactorInversed,
+        .dstGlobalAlpha = opa,
+        .srcGlobalAlpha = opa,
+        .dstAlphaMode = kPXP_PorterDuffAlphaStraight, /*don't care*/
+        .srcAlphaMode = kPXP_PorterDuffAlphaStraight  /*don't care*/
+    };
+
+    PXP_SetPorterDuffConfig(LV_GPU_NXP_PXP_ID, &pdConfig);
+
+    lv_gpu_nxp_pxp_run(); /*Start PXP task*/
+
+    return LV_RES_OK;
+}
+
+lv_res_t lv_gpu_nxp_pxp_blit(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
+                             const lv_color_t * src_buf, const lv_area_t * src_area, lv_opa_t opa, lv_disp_rot_t angle)
+{
+    uint32_t dest_size = lv_area_get_size(dest_area);
+    lv_coord_t dest_w = lv_area_get_width(dest_area);
+    lv_coord_t dest_h = lv_area_get_height(dest_area);
+
+    if(opa >= (lv_opa_t)LV_OPA_MAX) {
+        if(dest_size < LV_GPU_NXP_PXP_BLIT_SIZE_LIMIT) {
+            PXP_LOG_TRACE("Area size %d smaller than limit %d.", dest_size, LV_GPU_NXP_PXP_BLIT_SIZE_LIMIT);
+            return LV_RES_INV;
+        }
+    }
+    else {
+        if(dest_size < LV_GPU_NXP_PXP_BLIT_OPA_SIZE_LIMIT) {
+            PXP_LOG_TRACE("Area size %d smaller than limit %d.", dest_size, LV_GPU_NXP_PXP_BLIT_OPA_SIZE_LIMIT);
+            return LV_RES_INV;
+        }
+    }
+
+    PXP_Init(LV_GPU_NXP_PXP_ID);
+    PXP_EnableCsc1(LV_GPU_NXP_PXP_ID, false); /*Disable CSC1, it is enabled by default.*/
+    PXP_SetProcessBlockSize(LV_GPU_NXP_PXP_ID, kPXP_BlockSize16); /*block size 16x16 for higher performance*/
+
+    /* convert rotation angle */
+    pxp_rotate_degree_t pxp_rot;
+    switch(angle) {
+        case LV_DISP_ROT_NONE:
+            pxp_rot = kPXP_Rotate0;
+            break;
+        case LV_DISP_ROT_90:
+            pxp_rot = kPXP_Rotate90;
+            break;
+        case LV_DISP_ROT_180:
+            pxp_rot = kPXP_Rotate180;
+            break;
+        case LV_DISP_ROT_270:
+            pxp_rot = kPXP_Rotate270;
+            break;
+        default:
+            pxp_rot = kPXP_Rotate0;
+            break;
+    }
+    PXP_SetRotateConfig(LV_GPU_NXP_PXP_ID, kPXP_RotateOutputBuffer, pxp_rot, kPXP_FlipDisable);
+
+    pxp_as_blend_config_t asBlendConfig = {
+        .alpha = opa,
+        .invertAlpha = false,
+        .alphaMode = kPXP_AlphaRop,
+        .ropMode = kPXP_RopMergeAs
+    };
+
+    if(opa >= (lv_opa_t)LV_OPA_MAX) {
+        /*Simple blit, no effect - Disable PS buffer*/
+        PXP_SetProcessSurfacePosition(LV_GPU_NXP_PXP_ID, 0xFFFFU, 0xFFFFU, 0U, 0U);
+    }
+    else {
+        pxp_ps_buffer_config_t psBufferConfig = {
+            .pixelFormat = PXP_PS_PIXEL_FORMAT,
+            .swapByte = false,
+            .bufferAddr = (uint32_t)(dest_buf + dest_stride * dest_area->y1 + dest_area->x1),
+            .bufferAddrU = 0U,
+            .bufferAddrV = 0U,
+            .pitchBytes = dest_stride * sizeof(lv_color_t)
+        };
+
+        asBlendConfig.alphaMode = kPXP_AlphaOverride;
+
+        PXP_SetProcessSurfaceBufferConfig(LV_GPU_NXP_PXP_ID, &psBufferConfig);
+        PXP_SetProcessSurfacePosition(LV_GPU_NXP_PXP_ID, 0U, 0U, dest_w - 1, dest_h - 1);
+    }
+
+    lv_coord_t src_stride = lv_area_get_width(src_area);
+
+    /*AS buffer - source image*/
+    pxp_as_buffer_config_t asBufferConfig = {
+        .pixelFormat = PXP_AS_PIXEL_FORMAT,
+        .bufferAddr = (uint32_t)src_buf,
+        .pitchBytes = src_stride * sizeof(lv_color_t)
+    };
+    PXP_SetAlphaSurfaceBufferConfig(LV_GPU_NXP_PXP_ID, &asBufferConfig);
+    PXP_SetAlphaSurfacePosition(LV_GPU_NXP_PXP_ID, 0U, 0U, dest_w - 1U, dest_h - 1U);
+    PXP_SetAlphaSurfaceBlendConfig(LV_GPU_NXP_PXP_ID, &asBlendConfig);
+    PXP_EnableAlphaSurfaceOverlayColorKey(LV_GPU_NXP_PXP_ID, false);
+
+    /*Output buffer.*/
+    pxp_output_buffer_config_t outputBufferConfig = {
+        .pixelFormat = (pxp_output_pixel_format_t)PXP_OUT_PIXEL_FORMAT,
+        .interlacedMode = kPXP_OutputProgressive,
+        .buffer0Addr = (uint32_t)(dest_buf + dest_stride * dest_area->y1 + dest_area->x1),
+        .buffer1Addr = (uint32_t)0U,
+        .pitchBytes = dest_stride * sizeof(lv_color_t),
+        .width = dest_w,
+        .height = dest_h
+    };
+    PXP_SetOutputBufferConfig(LV_GPU_NXP_PXP_ID, &outputBufferConfig);
+
+    lv_gpu_nxp_pxp_run(); /* Start PXP task */
+
+    return LV_RES_OK;
+}
+
+lv_res_t lv_gpu_nxp_pxp_blit_transform(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
+                                       const lv_color_t * src_buf, const lv_area_t * src_area,
+                                       const lv_draw_img_dsc_t * dsc, lv_img_cf_t cf)
+{
+    uint32_t dest_size = lv_area_get_size(dest_area);
+
+    if(dsc->opa >= (lv_opa_t)LV_OPA_MAX) {
+        if(dest_size < LV_GPU_NXP_PXP_BLIT_SIZE_LIMIT) {
+            PXP_LOG_TRACE("Area size %d smaller than limit %d.", dest_size, LV_GPU_NXP_PXP_BLIT_SIZE_LIMIT);
+            return LV_RES_INV;
+        }
+    }
+    else {
+        if(dest_size < LV_GPU_NXP_PXP_BLIT_OPA_SIZE_LIMIT) {
+            PXP_LOG_TRACE("Area size %d smaller than limit %d.", dest_size, LV_GPU_NXP_PXP_BLIT_OPA_SIZE_LIMIT);
+            return LV_RES_INV;
+        }
+    }
+
+    bool recolor = (dsc->recolor_opa != LV_OPA_TRANSP);
+    bool rotation = (dsc->angle != 0);
+
+    if(rotation) {
+        if(dsc->angle != 0 && dsc->angle != 900 && dsc->angle != 1800 && dsc->angle != 2700) {
+            PXP_LOG_TRACE("Rotation angle %d is not supported. PXP can rotate only 90x angle.", dsc->angle);
+            return LV_RES_INV;
+        }
+    }
+
+    if(recolor || rotation) {
+        if(dsc->opa >= (lv_opa_t)LV_OPA_MAX && !lv_img_cf_has_alpha(cf) && !lv_img_cf_is_chroma_keyed(cf))
+            return lv_gpu_nxp_pxp_blit_cover(dest_buf, dest_area, dest_stride, src_buf, src_area, dsc, cf);
+        else
+            /*Recolor and/or rotation with alpha or opacity is done in two steps.*/
+            return lv_gpu_nxp_pxp_blit_opa(dest_buf, dest_area, dest_stride, src_buf, src_area, dsc, cf);
+    }
+
+    return lv_gpu_nxp_pxp_blit_cf(dest_buf, dest_area, dest_stride, src_buf, src_area, dsc, cf);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static lv_res_t lv_gpu_nxp_pxp_blit_opa(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
+                                        const lv_color_t * src_buf, const lv_area_t * src_area,
+                                        const lv_draw_img_dsc_t * dsc, lv_img_cf_t cf)
+{
+    lv_coord_t dest_w = lv_area_get_width(dest_area);
+    lv_coord_t dest_h = lv_area_get_height(dest_area);
+    lv_res_t res;
+    uint32_t size = dest_w * dest_h * sizeof(lv_color_t);
+
+    if(ROUND_UP(size, ALIGN_SIZE) >= LV_MEM_SIZE)
+        PXP_RETURN_INV("Insufficient memory for temporary buffer. Please increase LV_MEM_SIZE.");
+
+    lv_color_t * tmp_buf = (lv_color_t *)lv_mem_buf_get(size);
+    if(!tmp_buf)
+        PXP_RETURN_INV("Allocating temporary buffer failed.");
+
+    const lv_area_t tmp_area = {
+        .x1 = 0,
+        .y1 = 0,
+        .x2 = dest_w - 1,
+        .y2 = dest_h - 1
+    };
+
+    /*Step 1: Transform with full opacity to temporary buffer*/
+    res = lv_gpu_nxp_pxp_blit_cover(tmp_buf, &tmp_area, dest_w, src_buf, src_area, dsc, cf);
+    if(res != LV_RES_OK) {
+        PXP_LOG_TRACE("Blit cover with full opacity failed.");
+        lv_mem_buf_release(tmp_buf);
+
+        return res;
+    }
+
+    /*Step 2: Blit temporary results with required opacity to output*/
+    res = lv_gpu_nxp_pxp_blit_cf(dest_buf, dest_area, dest_stride, tmp_buf, &tmp_area, dsc, cf);
+
+    /*Clean-up memory*/
+    lv_mem_buf_release(tmp_buf);
+
+    return res;
+}
+
+static lv_res_t lv_gpu_nxp_pxp_blit_cover(lv_color_t * dest_buf, const lv_area_t * dest_area,
+                                          lv_coord_t dest_stride,
+                                          const lv_color_t * src_buf, const lv_area_t * src_area,
+                                          const lv_draw_img_dsc_t * dsc, lv_img_cf_t cf)
+{
+    lv_coord_t dest_w = lv_area_get_width(dest_area);
+    lv_coord_t dest_h = lv_area_get_height(dest_area);
+
+    bool recolor = (dsc->recolor_opa != LV_OPA_TRANSP);
+    bool rotation = (dsc->angle != 0);
+
+    PXP_Init(LV_GPU_NXP_PXP_ID);
+    PXP_EnableCsc1(LV_GPU_NXP_PXP_ID, false); /*Disable CSC1, it is enabled by default.*/
+    PXP_SetProcessBlockSize(LV_GPU_NXP_PXP_ID, kPXP_BlockSize16); /*block size 16x16 for higher performance*/
+
+    if(rotation) {
+        /*
+         * PXP is set to process 16x16 blocks to optimize the system for memory
+         * bandwidth and image processing time.
+         * The output engine essentially truncates any output pixels after the
+         * desired number of pixels has been written.
+         * When rotating a source image and the output is not divisible by the block
+         * size, the incorrect pixels could be truncated and the final output image
+         * can look shifted.
+         */
+        if(lv_area_get_width(src_area) % 16 || lv_area_get_height(src_area) % 16) {
+            PXP_LOG_TRACE("Rotation is not supported for image w/o alignment to block size 16x16.");
+            return LV_RES_INV;
+        }
+
+        /*Convert rotation angle*/
+        pxp_rotate_degree_t pxp_rot;
+        switch(dsc->angle) {
+            case 0:
+                pxp_rot = kPXP_Rotate0;
+                break;
+            case 900:
+                pxp_rot = kPXP_Rotate90;
+                break;
+            case 1800:
+                pxp_rot = kPXP_Rotate180;
+                break;
+            case 2700:
+                pxp_rot = kPXP_Rotate270;
+                break;
+            default:
+                PXP_LOG_TRACE("Rotation angle %d is not supported. PXP can rotate only 90x angle.", dsc->angle);
+                return LV_RES_INV;
+        }
+        PXP_SetRotateConfig(LV_GPU_NXP_PXP_ID, kPXP_RotateOutputBuffer, pxp_rot, kPXP_FlipDisable);
+    }
+
+    lv_coord_t src_stride = lv_area_get_width(src_area);
+
+    /*AS buffer - source image*/
+    pxp_as_buffer_config_t asBufferConfig = {
+        .pixelFormat = PXP_AS_PIXEL_FORMAT,
+        .bufferAddr = (uint32_t)src_buf,
+        .pitchBytes = src_stride * sizeof(lv_color_t)
+    };
+    PXP_SetAlphaSurfaceBufferConfig(LV_GPU_NXP_PXP_ID, &asBufferConfig);
+    PXP_SetAlphaSurfacePosition(LV_GPU_NXP_PXP_ID, 0U, 0U, dest_w - 1U, dest_h - 1U);
+
+    /*Disable PS buffer*/
+    PXP_SetProcessSurfacePosition(LV_GPU_NXP_PXP_ID, 0xFFFFU, 0xFFFFU, 0U, 0U);
+    if(recolor)
+        /*Use as color generator*/
+        PXP_SetProcessSurfaceBackGroundColor(LV_GPU_NXP_PXP_ID, lv_color_to32(dsc->recolor));
+
+    /*Output buffer*/
+    pxp_output_buffer_config_t outputBufferConfig = {
+        .pixelFormat = (pxp_output_pixel_format_t)PXP_OUT_PIXEL_FORMAT,
+        .interlacedMode = kPXP_OutputProgressive,
+        .buffer0Addr = (uint32_t)(dest_buf + dest_stride * dest_area->y1 + dest_area->x1),
+        .buffer1Addr = (uint32_t)0U,
+        .pitchBytes = dest_stride * sizeof(lv_color_t),
+        .width = dest_w,
+        .height = dest_h
+    };
+    PXP_SetOutputBufferConfig(LV_GPU_NXP_PXP_ID, &outputBufferConfig);
+
+    if(recolor || lv_img_cf_has_alpha(cf)) {
+        /**
+         * Configure Porter-Duff blending.
+         *
+         * Note: srcFactorMode and dstFactorMode are inverted in fsl_pxp.h:
+         * srcFactorMode is actually applied on PS alpha value
+         * dstFactorMode is actually applied on AS alpha value
+         */
+        pxp_porter_duff_config_t pdConfig = {
+            .enable = 1,
+            .dstColorMode = kPXP_PorterDuffColorWithAlpha,
+            .srcColorMode = kPXP_PorterDuffColorNoAlpha,
+            .dstGlobalAlphaMode = kPXP_PorterDuffGlobalAlpha,
+            .srcGlobalAlphaMode = lv_img_cf_has_alpha(cf) ? kPXP_PorterDuffLocalAlpha : kPXP_PorterDuffGlobalAlpha,
+            .dstFactorMode = kPXP_PorterDuffFactorStraight,
+            .srcFactorMode = kPXP_PorterDuffFactorInversed,
+            .dstGlobalAlpha = recolor ? dsc->recolor_opa : 0x00,
+            .srcGlobalAlpha = 0xff,
+            .dstAlphaMode = kPXP_PorterDuffAlphaStraight, /*don't care*/
+            .srcAlphaMode = kPXP_PorterDuffAlphaStraight
+        };
+        PXP_SetPorterDuffConfig(LV_GPU_NXP_PXP_ID, &pdConfig);
+    }
+
+    lv_gpu_nxp_pxp_run(); /*Start PXP task*/
+
+    return LV_RES_OK;
+}
+
+static lv_res_t lv_gpu_nxp_pxp_blit_cf(lv_color_t * dest_buf, const lv_area_t * dest_area,
+                                       lv_coord_t dest_stride,
+                                       const lv_color_t * src_buf, const lv_area_t * src_area,
+                                       const lv_draw_img_dsc_t * dsc, lv_img_cf_t cf)
+{
+    lv_coord_t dest_w = lv_area_get_width(dest_area);
+    lv_coord_t dest_h = lv_area_get_height(dest_area);
+
+    PXP_Init(LV_GPU_NXP_PXP_ID);
+    PXP_EnableCsc1(LV_GPU_NXP_PXP_ID, false); /*Disable CSC1, it is enabled by default.*/
+    PXP_SetProcessBlockSize(LV_GPU_NXP_PXP_ID, kPXP_BlockSize16); /*block size 16x16 for higher performance*/
+
+    pxp_as_blend_config_t asBlendConfig = {
+        .alpha = dsc->opa,
+        .invertAlpha = false,
+        .alphaMode = kPXP_AlphaRop,
+        .ropMode = kPXP_RopMergeAs
+    };
+
+    if(dsc->opa >= (lv_opa_t)LV_OPA_MAX && !lv_img_cf_is_chroma_keyed(cf) && !lv_img_cf_has_alpha(cf)) {
+        /*Simple blit, no effect - Disable PS buffer*/
+        PXP_SetProcessSurfacePosition(LV_GPU_NXP_PXP_ID, 0xFFFFU, 0xFFFFU, 0U, 0U);
+    }
+    else {
+        /*PS must be enabled to fetch background pixels.
+          PS and OUT buffers are the same, blend will be done in-place*/
+        pxp_ps_buffer_config_t psBufferConfig = {
+            .pixelFormat = PXP_PS_PIXEL_FORMAT,
+            .swapByte = false,
+            .bufferAddr = (uint32_t)(dest_buf + dest_stride * dest_area->y1 + dest_area->x1),
+            .bufferAddrU = 0U,
+            .bufferAddrV = 0U,
+            .pitchBytes = dest_stride * sizeof(lv_color_t)
+        };
+        if(dsc->opa >= (lv_opa_t)LV_OPA_MAX) {
+            asBlendConfig.alphaMode = lv_img_cf_has_alpha(cf) ? kPXP_AlphaEmbedded : kPXP_AlphaOverride;
+        }
+        else {
+            asBlendConfig.alphaMode = lv_img_cf_has_alpha(cf) ? kPXP_AlphaMultiply : kPXP_AlphaOverride;
+        }
+        PXP_SetProcessSurfaceBufferConfig(LV_GPU_NXP_PXP_ID, &psBufferConfig);
+        PXP_SetProcessSurfacePosition(LV_GPU_NXP_PXP_ID, 0U, 0U, dest_w - 1, dest_h - 1);
+    }
+
+    lv_coord_t src_stride = lv_area_get_width(src_area);
+
+    /*AS buffer - source image*/
+    pxp_as_buffer_config_t asBufferConfig = {
+        .pixelFormat = PXP_AS_PIXEL_FORMAT,
+        .bufferAddr = (uint32_t)src_buf,
+        .pitchBytes = src_stride * sizeof(lv_color_t)
+    };
+    PXP_SetAlphaSurfaceBufferConfig(LV_GPU_NXP_PXP_ID, &asBufferConfig);
+    PXP_SetAlphaSurfacePosition(LV_GPU_NXP_PXP_ID, 0U, 0U, dest_w - 1U, dest_h - 1U);
+    PXP_SetAlphaSurfaceBlendConfig(LV_GPU_NXP_PXP_ID, &asBlendConfig);
+
+    if(lv_img_cf_is_chroma_keyed(cf)) {
+        lv_color_t colorKeyLow = LV_COLOR_CHROMA_KEY;
+        lv_color_t colorKeyHigh = LV_COLOR_CHROMA_KEY;
+
+        bool recolor = (dsc->recolor_opa != LV_OPA_TRANSP);
+
+        if(recolor) {
+            /* New color key after recoloring */
+            lv_color_t colorKey =  lv_color_mix(dsc->recolor, LV_COLOR_CHROMA_KEY, dsc->recolor_opa);
+
+            LV_COLOR_SET_R(colorKeyLow, colorKey.ch.red != 0 ? colorKey.ch.red - 1 : 0);
+            LV_COLOR_SET_G(colorKeyLow, colorKey.ch.green != 0 ? colorKey.ch.green - 1 : 0);
+            LV_COLOR_SET_B(colorKeyLow, colorKey.ch.blue != 0 ? colorKey.ch.blue - 1 : 0);
+
+#if LV_COLOR_DEPTH==16
+            LV_COLOR_SET_R(colorKeyHigh, colorKey.ch.red != 0x1f ? colorKey.ch.red + 1 : 0x1f);
+            LV_COLOR_SET_G(colorKeyHigh, colorKey.ch.green != 0x3f ? colorKey.ch.green + 1 : 0x3f);
+            LV_COLOR_SET_B(colorKeyHigh, colorKey.ch.blue != 0x1f ? colorKey.ch.blue + 1 : 0x1f);
+#else /*LV_COLOR_DEPTH==32*/
+            LV_COLOR_SET_R(colorKeyHigh, colorKey.ch.red != 0xff ? colorKey.ch.red + 1 : 0xff);
+            LV_COLOR_SET_G(colorKeyHigh, colorKey.ch.green != 0xff ? colorKey.ch.green + 1 : 0xff);
+            LV_COLOR_SET_B(colorKeyHigh, colorKey.ch.blue != 0xff ? colorKey.ch.blue + 1 : 0xff);
+#endif
+        }
+
+        PXP_SetAlphaSurfaceOverlayColorKey(LV_GPU_NXP_PXP_ID, lv_color_to32(colorKeyLow),
+                                           lv_color_to32(colorKeyHigh));
+    }
+
+    PXP_EnableAlphaSurfaceOverlayColorKey(LV_GPU_NXP_PXP_ID, lv_img_cf_is_chroma_keyed(cf));
+
+    /*Output buffer.*/
+    pxp_output_buffer_config_t outputBufferConfig = {
+        .pixelFormat = (pxp_output_pixel_format_t)PXP_OUT_PIXEL_FORMAT,
+        .interlacedMode = kPXP_OutputProgressive,
+        .buffer0Addr = (uint32_t)(dest_buf + dest_stride * dest_area->y1 + dest_area->x1),
+        .buffer1Addr = (uint32_t)0U,
+        .pitchBytes = dest_stride * sizeof(lv_color_t),
+        .width = dest_w,
+        .height = dest_h
+    };
+    PXP_SetOutputBufferConfig(LV_GPU_NXP_PXP_ID, &outputBufferConfig);
+
+    lv_gpu_nxp_pxp_run(); /* Start PXP task */
+
+    return LV_RES_OK;
+}
+
+#endif /*LV_USE_GPU_NXP_PXP*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/pxp/lv_draw_pxp_blend.h

@@ -0,0 +1,143 @@
+/**
+ * @file lv_draw_pxp_blend.h
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2020-2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef LV_DRAW_PXP_BLEND_H
+#define LV_DRAW_PXP_BLEND_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../../lv_conf_internal.h"
+
+#if LV_USE_GPU_NXP_PXP
+#include "lv_gpu_nxp_pxp.h"
+#include "../../sw/lv_draw_sw.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+#ifndef LV_GPU_NXP_PXP_BLIT_SIZE_LIMIT
+/** Minimum area (in pixels) for image copy with 100% opacity to be handled by PXP*/
+#define LV_GPU_NXP_PXP_BLIT_SIZE_LIMIT 5000
+#endif
+
+#ifndef LV_GPU_NXP_PXP_BLIT_OPA_SIZE_LIMIT
+/** Minimum area (in pixels) for image copy with transparency to be handled by PXP*/
+#define LV_GPU_NXP_PXP_BLIT_OPA_SIZE_LIMIT 5000
+#endif
+
+#ifndef LV_GPU_NXP_PXP_BUFF_SYNC_BLIT_SIZE_LIMIT
+/** Minimum invalidated area (in pixels) to be synchronized by PXP during buffer sync */
+#define LV_GPU_NXP_PXP_BUFF_SYNC_BLIT_SIZE_LIMIT 5000
+#endif
+
+#ifndef LV_GPU_NXP_PXP_FILL_SIZE_LIMIT
+/** Minimum area (in pixels) to be filled by PXP with 100% opacity*/
+#define LV_GPU_NXP_PXP_FILL_SIZE_LIMIT 5000
+#endif
+
+#ifndef LV_GPU_NXP_PXP_FILL_OPA_SIZE_LIMIT
+/** Minimum area (in pixels) to be filled by PXP with transparency*/
+#define LV_GPU_NXP_PXP_FILL_OPA_SIZE_LIMIT 5000
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Fill area, with optional opacity.
+ *
+ * @param[in/out] dest_buf destination buffer
+ * @param[in] dest_stride width (stride) of destination buffer in pixels
+ * @param[in] fill_area area to fill
+ * @param[in] color color
+ * @param[in] opa transparency of the color
+ * @retval LV_RES_OK Fill completed
+ * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_PXP_LOG_ERRORS)
+ */
+lv_res_t lv_gpu_nxp_pxp_fill(lv_color_t * dest_buf, lv_coord_t dest_stride, const lv_area_t * fill_area,
+                             lv_color_t color, lv_opa_t opa);
+
+/**
+ * BLock Image Transfer - copy rectangular image from src_buf to dst_buf with effects.
+ * By default, image is copied directly, with optional opacity. This function can also
+ * rotate the display output buffer to a specified angle (90x step).
+ *
+ * @param[in/out] dest_buf destination buffer
+ * @param[in] dest_area destination area
+ * @param[in] dest_stride width (stride) of destination buffer in pixels
+ * @param[in] src_buf source buffer
+ * @param[in] src_area source area with absolute coordinates to draw on destination buffer
+ * @param[in] opa opacity of the result
+ * @param[in] angle display rotation angle (90x)
+ * @retval LV_RES_OK Fill completed
+ * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_PXP_LOG_ERRORS)
+ */
+lv_res_t lv_gpu_nxp_pxp_blit(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
+                             const lv_color_t * src_buf, const lv_area_t * src_area, lv_opa_t opa, lv_disp_rot_t angle);
+
+/**
+ * BLock Image Transfer - copy rectangular image from src_buf to dst_buf with transformation.
+ *
+ *
+ * @param[in/out] dest_buf destination buffer
+ * @param[in] dest_area destination area
+ * @param[in] dest_stride width (stride) of destination buffer in pixels
+ * @param[in] src_buf source buffer
+ * @param[in] src_area source area with absolute coordinates to draw on destination buffer
+ * @param[in] dsc image descriptor
+ * @param[in] cf color format
+ * @retval LV_RES_OK Fill completed
+ * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_PXP_LOG_ERRORS)
+ */
+lv_res_t lv_gpu_nxp_pxp_blit_transform(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
+                                       const lv_color_t * src_buf, const lv_area_t * src_area, const lv_draw_img_dsc_t * dsc, lv_img_cf_t cf);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_GPU_NXP_PXP*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_PXP_BLEND_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/pxp/lv_gpu_nxp_pxp.c

@@ -0,0 +1,116 @@
+/**
+ * @file lv_gpu_nxp_pxp.c
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2020-2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "lv_gpu_nxp_pxp.h"
+
+#if LV_USE_GPU_NXP_PXP
+#include "lv_gpu_nxp_pxp_osa.h"
+#include "../../../core/lv_refr.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**
+ * Clean & invalidate cache.
+ */
+static void invalidate_cache(void);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+static lv_nxp_pxp_cfg_t * pxp_cfg;
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_res_t lv_gpu_nxp_pxp_init(void)
+{
+    pxp_cfg = lv_gpu_nxp_pxp_get_cfg();
+
+    if(!pxp_cfg || !pxp_cfg->pxp_interrupt_deinit || !pxp_cfg->pxp_interrupt_init || !pxp_cfg->pxp_run)
+        PXP_RETURN_INV("PXP configuration error.");
+
+    PXP_Init(LV_GPU_NXP_PXP_ID);
+    PXP_EnableCsc1(LV_GPU_NXP_PXP_ID, false); /*Disable CSC1, it is enabled by default.*/
+    PXP_EnableInterrupts(LV_GPU_NXP_PXP_ID, kPXP_CompleteInterruptEnable);
+
+    if(pxp_cfg->pxp_interrupt_init() != LV_RES_OK) {
+        PXP_Deinit(LV_GPU_NXP_PXP_ID);
+        PXP_RETURN_INV("PXP interrupt init failed.");
+    }
+
+    return LV_RES_OK;
+}
+
+void lv_gpu_nxp_pxp_deinit(void)
+{
+    pxp_cfg->pxp_interrupt_deinit();
+    PXP_DisableInterrupts(PXP, kPXP_CompleteInterruptEnable);
+    PXP_Deinit(LV_GPU_NXP_PXP_ID);
+}
+
+void lv_gpu_nxp_pxp_run(void)
+{
+    /*Clean & invalidate cache*/
+    invalidate_cache();
+
+    pxp_cfg->pxp_run();
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void invalidate_cache(void)
+{
+    lv_disp_t * disp = _lv_refr_get_disp_refreshing();
+    if(disp->driver->clean_dcache_cb)
+        disp->driver->clean_dcache_cb(disp->driver);
+}
+
+#endif /*LV_USE_GPU_NXP_PXP*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/pxp/lv_gpu_nxp_pxp.h

@@ -0,0 +1,153 @@
+/**
+ * @file lv_gpu_nxp_pxp.h
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2020-2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef LV_GPU_NXP_PXP_H
+#define LV_GPU_NXP_PXP_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../../lv_conf_internal.h"
+
+#if LV_USE_GPU_NXP_PXP
+#include "fsl_cache.h"
+#include "fsl_pxp.h"
+
+#include "../../../misc/lv_log.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/** PXP module instance to use*/
+#define LV_GPU_NXP_PXP_ID PXP
+
+/** PXP interrupt line ID*/
+#define LV_GPU_NXP_PXP_IRQ_ID PXP_IRQn
+
+#ifndef LV_GPU_NXP_PXP_LOG_ERRORS
+/** Enable logging of PXP errors (\see LV_LOG_ERROR)*/
+#define LV_GPU_NXP_PXP_LOG_ERRORS 1
+#endif
+
+#ifndef LV_GPU_NXP_PXP_LOG_TRACES
+/** Enable logging of PXP errors (\see LV_LOG_ERROR)*/
+#define LV_GPU_NXP_PXP_LOG_TRACES 0
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**
+ * NXP PXP device configuration - call-backs used for
+ * interrupt init/wait/deinit.
+ */
+typedef struct {
+    /** Callback for PXP interrupt initialization*/
+    lv_res_t (*pxp_interrupt_init)(void);
+
+    /** Callback for PXP interrupt de-initialization*/
+    void (*pxp_interrupt_deinit)(void);
+
+    /** Callback that should start PXP and wait for operation complete*/
+    void (*pxp_run)(void);
+} lv_nxp_pxp_cfg_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Reset and initialize PXP device. This function should be called as a part
+ * of display init sequence.
+ *
+ * @retval LV_RES_OK PXP init completed
+ * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_PXP_LOG_ERRORS)
+ */
+lv_res_t lv_gpu_nxp_pxp_init(void);
+
+/**
+ * Disable PXP device. Should be called during display deinit sequence.
+ */
+void lv_gpu_nxp_pxp_deinit(void);
+
+/**
+ * Start PXP job and wait for completion.
+ */
+void lv_gpu_nxp_pxp_run(void);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#define PXP_COND_STOP(cond, txt)              \
+    do {                                      \
+        if (cond) {                           \
+            LV_LOG_ERROR("%s. STOP!", txt);   \
+            for ( ; ; );                      \
+        }                                     \
+    } while(0)
+
+#if LV_GPU_NXP_PXP_LOG_ERRORS
+#define PXP_RETURN_INV(fmt, ...)              \
+    do {                                      \
+        LV_LOG_ERROR(fmt, ##__VA_ARGS__);     \
+        return LV_RES_INV;                    \
+    } while (0)
+#else
+#define PXP_RETURN_INV(fmt, ...)              \
+    do {                                      \
+        return LV_RES_INV;                    \
+    }while(0)
+#endif /*LV_GPU_NXP_PXP_LOG_ERRORS*/
+
+#if LV_GPU_NXP_PXP_LOG_TRACES
+#define PXP_LOG_TRACE(fmt, ...)               \
+    do {                                      \
+        LV_LOG_ERROR(fmt, ##__VA_ARGS__);     \
+    } while (0)
+#else
+#define PXP_LOG_TRACE(fmt, ...)               \
+    do {                                      \
+    } while (0)
+#endif /*LV_GPU_NXP_PXP_LOG_TRACES*/
+
+#endif /*LV_USE_GPU_NXP_PXP*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_GPU_NXP_PXP_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/pxp/lv_gpu_nxp_pxp_osa.c

@@ -0,0 +1,164 @@
+/**
+ * @file lv_gpu_nxp_pxp_osa.c
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2020, 2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "lv_gpu_nxp_pxp_osa.h"
+
+#if LV_USE_GPU_NXP_PXP && LV_USE_GPU_NXP_PXP_AUTO_INIT
+#include "../../../misc/lv_log.h"
+#include "fsl_pxp.h"
+
+#if defined(SDK_OS_FREE_RTOS)
+    #include "FreeRTOS.h"
+    #include "semphr.h"
+#endif
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**
+ * PXP interrupt initialization.
+ */
+static lv_res_t _lv_gpu_nxp_pxp_interrupt_init(void);
+
+/**
+ * PXP interrupt de-initialization.
+ */
+static void _lv_gpu_nxp_pxp_interrupt_deinit(void);
+
+/**
+ * Start the PXP job and wait for task completion.
+ */
+static void _lv_gpu_nxp_pxp_run(void);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+#if defined(SDK_OS_FREE_RTOS)
+    static SemaphoreHandle_t s_pxpIdle;
+#else
+    static volatile bool s_pxpIdle;
+#endif
+
+static lv_nxp_pxp_cfg_t pxp_default_cfg = {
+    .pxp_interrupt_init = _lv_gpu_nxp_pxp_interrupt_init,
+    .pxp_interrupt_deinit = _lv_gpu_nxp_pxp_interrupt_deinit,
+    .pxp_run = _lv_gpu_nxp_pxp_run
+};
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void PXP_IRQHandler(void)
+{
+#if defined(SDK_OS_FREE_RTOS)
+    BaseType_t taskAwake = pdFALSE;
+#endif
+
+    if(kPXP_CompleteFlag & PXP_GetStatusFlags(LV_GPU_NXP_PXP_ID)) {
+        PXP_ClearStatusFlags(LV_GPU_NXP_PXP_ID, kPXP_CompleteFlag);
+#if defined(SDK_OS_FREE_RTOS)
+        xSemaphoreGiveFromISR(s_pxpIdle, &taskAwake);
+        portYIELD_FROM_ISR(taskAwake);
+#else
+        s_pxpIdle = true;
+#endif
+    }
+}
+
+lv_nxp_pxp_cfg_t * lv_gpu_nxp_pxp_get_cfg(void)
+{
+    return &pxp_default_cfg;
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static lv_res_t _lv_gpu_nxp_pxp_interrupt_init(void)
+{
+#if defined(SDK_OS_FREE_RTOS)
+    s_pxpIdle = xSemaphoreCreateBinary();
+    if(s_pxpIdle == NULL)
+        return LV_RES_INV;
+
+    NVIC_SetPriority(LV_GPU_NXP_PXP_IRQ_ID, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY + 1);
+#else
+    s_pxpIdle = true;
+#endif
+
+    NVIC_EnableIRQ(LV_GPU_NXP_PXP_IRQ_ID);
+
+    return LV_RES_OK;
+}
+
+static void _lv_gpu_nxp_pxp_interrupt_deinit(void)
+{
+    NVIC_DisableIRQ(LV_GPU_NXP_PXP_IRQ_ID);
+#if defined(SDK_OS_FREE_RTOS)
+    vSemaphoreDelete(s_pxpIdle);
+#endif
+}
+
+static void _lv_gpu_nxp_pxp_run(void)
+{
+#if !defined(SDK_OS_FREE_RTOS)
+    s_pxpIdle = false;
+#endif
+
+    PXP_EnableInterrupts(LV_GPU_NXP_PXP_ID, kPXP_CompleteInterruptEnable);
+    PXP_Start(LV_GPU_NXP_PXP_ID);
+
+#if defined(SDK_OS_FREE_RTOS)
+    PXP_COND_STOP(!xSemaphoreTake(s_pxpIdle, portMAX_DELAY), "xSemaphoreTake failed.");
+#else
+    while(s_pxpIdle == false) {
+    }
+#endif
+}
+
+#endif /*LV_USE_GPU_NXP_PXP && LV_USE_GPU_NXP_PXP_AUTO_INIT*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/pxp/lv_gpu_nxp_pxp_osa.h

@@ -0,0 +1,78 @@
+/**
+ * @file lv_gpu_nxp_pxp_osa.h
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2020, 2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef LV_GPU_NXP_PXP_OSA_H
+#define LV_GPU_NXP_PXP_OSA_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../../lv_conf_internal.h"
+
+#if LV_USE_GPU_NXP_PXP && LV_USE_GPU_NXP_PXP_AUTO_INIT
+#include "lv_gpu_nxp_pxp.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * PXP device interrupt handler. Used to check PXP task completion status.
+ */
+void PXP_IRQHandler(void);
+
+/**
+ * Helper function to get the PXP default configuration.
+ */
+lv_nxp_pxp_cfg_t * lv_gpu_nxp_pxp_get_cfg(void);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_GPU_NXP_PXP && LV_USE_GPU_NXP_PXP_AUTO_INIT*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_GPU_NXP_PXP_OSA_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/vglite/lv_draw_nxp_vglite.mk

@@ -0,0 +1,9 @@
+CSRCS += lv_draw_vglite_arc.c
+CSRCS += lv_draw_vglite_blend.c
+CSRCS += lv_draw_vglite_rect.c
+CSRCS += lv_gpu_nxp_vglite.c
+
+DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp/vglite
+VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp/vglite
+
+CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/nxp/vglite"

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/vglite/lv_draw_vglite_arc.c

@@ -0,0 +1,699 @@
+/**
+ * @file lv_draw_vglite_arc.c
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2021, 2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "lv_draw_vglite_arc.h"
+
+#if LV_USE_GPU_NXP_VG_LITE
+#include "math.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+#define T_FRACTION 16384.0f
+
+#define DICHOTO_ITER 5
+
+static const uint16_t TperDegree[90] = {
+    0, 174, 348, 522, 697, 873, 1049, 1226, 1403, 1581,
+    1759, 1938, 2117, 2297, 2477, 2658, 2839, 3020, 3202, 3384,
+    3567, 3749, 3933, 4116, 4300, 4484, 4668, 4852, 5037, 5222,
+    5407, 5592, 5777, 5962, 6148, 6334, 6519, 6705, 6891, 7077,
+    7264, 7450, 7636, 7822, 8008, 8193, 8378, 8564, 8750, 8936,
+    9122, 9309, 9495, 9681, 9867, 10052, 10238, 10424, 10609, 10794,
+    10979, 11164, 11349, 11534, 11718, 11902, 12086, 12270, 12453, 12637,
+    12819, 13002, 13184, 13366, 13547, 13728, 13909, 14089, 14269, 14448,
+    14627, 14805, 14983, 15160, 15337, 15513, 15689, 15864, 16038, 16212
+};
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/* intermediate arc params */
+typedef struct _vg_arc {
+    int32_t angle;   /* angle <90deg */
+    int32_t quarter; /* 0-3 counter-clockwise */
+    int32_t rad;     /* radius */
+    int32_t p0x;       /* point P0 */
+    int32_t p0y;
+    int32_t p1x;      /* point P1 */
+    int32_t p1y;
+    int32_t p2x;      /* point P2 */
+    int32_t p2y;
+    int32_t p3x;      /* point P3 */
+    int32_t p3y;
+} vg_arc;
+
+typedef struct _cubic_cont_pt {
+    float p0;
+    float p1;
+    float p2;
+    float p3;
+} cubic_cont_pt;
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static void rotate_point(int32_t angle, int32_t * x, int32_t * y);
+static void add_arc_path(int32_t * arc_path, int * pidx, int32_t radius,
+                         int32_t start_angle, int32_t end_angle, lv_point_t center, bool cw);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_res_t lv_gpu_nxp_vglite_draw_arc(lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center,
+                                    int32_t radius, int32_t start_angle, int32_t end_angle)
+{
+
+    vg_lite_buffer_t vgbuf;
+    vg_lite_error_t err = VG_LITE_SUCCESS;
+    lv_color32_t col32 = {.full = lv_color_to32(dsc->color)}; /*Convert color to RGBA8888*/
+    lv_coord_t dest_width = lv_area_get_width(draw_ctx->buf_area);
+    lv_coord_t dest_height = lv_area_get_height(draw_ctx->buf_area);
+    vg_lite_path_t path;
+    vg_lite_color_t vgcol; /* vglite takes ABGR */
+    vg_lite_matrix_t matrix;
+    lv_opa_t opa = dsc->opa;
+    bool donut = ((end_angle - start_angle) % 360 == 0) ? true : false;
+    lv_point_t clip_center = {center->x - draw_ctx->buf_area->x1, center->y - draw_ctx->buf_area->y1};
+
+    /* path: max size = 16 cubic bezier (7 words each) */
+    int32_t arc_path[16 * 7];
+    lv_memset_00(arc_path, sizeof(arc_path));
+
+    /*** Init destination buffer ***/
+    if(lv_vglite_init_buf(&vgbuf, (uint32_t)dest_width, (uint32_t)dest_height, (uint32_t)dest_width * sizeof(lv_color_t),
+                          (const lv_color_t *)draw_ctx->buf, false) != LV_RES_OK)
+        VG_LITE_RETURN_INV("Init buffer failed.");
+
+    /*** Init path ***/
+    lv_coord_t width = dsc->width;  /* inner arc radius = outer arc radius - width */
+    if(width > (lv_coord_t)radius)
+        width = radius;
+
+    int pidx = 0;
+    int32_t cp_x, cp_y; /* control point coords */
+
+    /* first control point of curve */
+    cp_x = radius;
+    cp_y = 0;
+    rotate_point(start_angle, &cp_x, &cp_y);
+    arc_path[pidx++] = VLC_OP_MOVE;
+    arc_path[pidx++] = clip_center.x + cp_x;
+    arc_path[pidx++] = clip_center.y + cp_y;
+
+    /* draw 1-5 outer quarters */
+    add_arc_path(arc_path, &pidx, radius, start_angle, end_angle, clip_center, true);
+
+    if(donut) {
+        /* close outer circle */
+        cp_x = radius;
+        cp_y = 0;
+        rotate_point(start_angle, &cp_x, &cp_y);
+        arc_path[pidx++] = VLC_OP_LINE;
+        arc_path[pidx++] = clip_center.x + cp_x;
+        arc_path[pidx++] = clip_center.y + cp_y;
+        /* start inner circle */
+        cp_x = radius - width;
+        cp_y = 0;
+        rotate_point(start_angle, &cp_x, &cp_y);
+        arc_path[pidx++] = VLC_OP_MOVE;
+        arc_path[pidx++] = clip_center.x + cp_x;
+        arc_path[pidx++] = clip_center.y + cp_y;
+
+    }
+    else if(dsc->rounded != 0U) {    /* 1st rounded arc ending */
+        cp_x = radius - width / 2;
+        cp_y = 0;
+        rotate_point(end_angle, &cp_x, &cp_y);
+        lv_point_t round_center = {clip_center.x + cp_x, clip_center.y + cp_y};
+        add_arc_path(arc_path, &pidx, width / 2, end_angle, (end_angle + 180),
+                     round_center, true);
+
+    }
+    else {   /* 1st flat ending */
+        cp_x = radius - width;
+        cp_y = 0;
+        rotate_point(end_angle, &cp_x, &cp_y);
+        arc_path[pidx++] = VLC_OP_LINE;
+        arc_path[pidx++] = clip_center.x + cp_x;
+        arc_path[pidx++] = clip_center.y + cp_y;
+    }
+
+    /* draw 1-5 inner quarters */
+    add_arc_path(arc_path, &pidx, radius - width, start_angle, end_angle, clip_center, false);
+
+    /* last control point of curve */
+    if(donut) {     /* close the loop */
+        cp_x = radius - width;
+        cp_y = 0;
+        rotate_point(start_angle, &cp_x, &cp_y);
+        arc_path[pidx++] = VLC_OP_LINE;
+        arc_path[pidx++] = clip_center.x + cp_x;
+        arc_path[pidx++] = clip_center.y + cp_y;
+
+    }
+    else if(dsc->rounded != 0U) {    /* 2nd rounded arc ending */
+        cp_x = radius - width / 2;
+        cp_y = 0;
+        rotate_point(start_angle, &cp_x, &cp_y);
+        lv_point_t round_center = {clip_center.x + cp_x, clip_center.y + cp_y};
+        add_arc_path(arc_path, &pidx, width / 2, (start_angle + 180), (start_angle + 360),
+                     round_center, true);
+
+    }
+    else {   /* 2nd flat ending */
+        cp_x = radius;
+        cp_y = 0;
+        rotate_point(start_angle, &cp_x, &cp_y);
+        arc_path[pidx++] = VLC_OP_LINE;
+        arc_path[pidx++] = clip_center.x + cp_x;
+        arc_path[pidx++] = clip_center.y + cp_y;
+    }
+
+    arc_path[pidx++] = VLC_OP_END;
+
+    err = vg_lite_init_path(&path, VG_LITE_S32, VG_LITE_HIGH, (uint32_t)pidx * sizeof(int32_t), arc_path,
+                            (vg_lite_float_t) draw_ctx->clip_area->x1, (vg_lite_float_t) draw_ctx->clip_area->y1,
+                            ((vg_lite_float_t) draw_ctx->clip_area->x2) + 1.0f, ((vg_lite_float_t) draw_ctx->clip_area->y2) + 1.0f);
+    VG_LITE_ERR_RETURN_INV(err, "Init path failed.");
+
+    /* set rotation angle */
+    vg_lite_identity(&matrix);
+
+    if(opa <= (lv_opa_t)LV_OPA_MAX) {
+        /* Only pre-multiply color if hardware pre-multiplication is not present */
+        if(!vg_lite_query_feature(gcFEATURE_BIT_VG_PE_PREMULTIPLY)) {
+            col32.ch.red = (uint8_t)(((uint16_t)col32.ch.red * opa) >> 8);
+            col32.ch.green = (uint8_t)(((uint16_t)col32.ch.green * opa) >> 8);
+            col32.ch.blue = (uint8_t)(((uint16_t)col32.ch.blue * opa) >> 8);
+        }
+        col32.ch.alpha = opa;
+    }
+
+#if LV_COLOR_DEPTH==16
+    vgcol = col32.full;
+#else /*LV_COLOR_DEPTH==32*/
+    vgcol = ((uint32_t)col32.ch.alpha << 24) | ((uint32_t)col32.ch.blue << 16) | ((uint32_t)col32.ch.green << 8) |
+            (uint32_t)col32.ch.red;
+#endif
+
+    /*Clean & invalidate cache*/
+    lv_vglite_invalidate_cache();
+
+    /*** Draw arc ***/
+    err = vg_lite_draw(&vgbuf, &path, VG_LITE_FILL_NON_ZERO, &matrix, VG_LITE_BLEND_SRC_OVER, vgcol);
+    VG_LITE_ERR_RETURN_INV(err, "Draw arc failed.");
+
+    err = vg_lite_finish();
+    VG_LITE_ERR_RETURN_INV(err, "Finish failed.");
+
+    err = vg_lite_clear_path(&path);
+    VG_LITE_ERR_RETURN_INV(err, "Clear path failed.");
+
+    return LV_RES_OK;
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void copy_arc(vg_arc * dst, vg_arc * src)
+{
+    dst->quarter = src->quarter;
+    dst->rad = src->rad;
+    dst->angle = src->angle;
+    dst->p0x = src->p0x;
+    dst->p1x = src->p1x;
+    dst->p2x = src->p2x;
+    dst->p3x = src->p3x;
+    dst->p0y = src->p0y;
+    dst->p1y = src->p1y;
+    dst->p2y = src->p2y;
+    dst->p3y = src->p3y;
+}
+
+/**
+ * Rotate the point according given rotation angle rotation center is 0,0
+ */
+static void rotate_point(int32_t angle, int32_t * x, int32_t * y)
+{
+    int32_t ori_x = *x;
+    int32_t ori_y = *y;
+    int16_t alpha = (int16_t)angle;
+    *x = ((lv_trigo_cos(alpha) * ori_x) / LV_TRIGO_SIN_MAX) - ((lv_trigo_sin(alpha) * ori_y) / LV_TRIGO_SIN_MAX);
+    *y = ((lv_trigo_sin(alpha) * ori_x) / LV_TRIGO_SIN_MAX) + ((lv_trigo_cos(alpha) * ori_y) / LV_TRIGO_SIN_MAX);
+}
+
+/**
+ * Set full arc control points depending on quarter.
+ * Control points match the best approximation of a circle.
+ * Arc Quarter position is:
+ * Q2 | Q3
+ * ---+---
+ * Q1 | Q0
+ */
+static void set_full_arc(vg_arc * fullarc)
+{
+    /* the tangent lenght for the bezier circle approx */
+    float tang = ((float)fullarc->rad) * BEZIER_OPTIM_CIRCLE;
+    switch(fullarc->quarter) {
+        case 0:
+            /* first quarter */
+            fullarc->p0x = fullarc->rad;
+            fullarc->p0y = 0;
+            fullarc->p1x = fullarc->rad;
+            fullarc->p1y = (int32_t)tang;
+            fullarc->p2x = (int32_t)tang;
+            fullarc->p2y = fullarc->rad;
+            fullarc->p3x = 0;
+            fullarc->p3y = fullarc->rad;
+            break;
+        case 1:
+            /* second quarter */
+            fullarc->p0x = 0;
+            fullarc->p0y = fullarc->rad;
+            fullarc->p1x = 0 - (int32_t)tang;
+            fullarc->p1y = fullarc->rad;
+            fullarc->p2x = 0 - fullarc->rad;
+            fullarc->p2y = (int32_t)tang;
+            fullarc->p3x = 0 - fullarc->rad;
+            fullarc->p3y = 0;
+            break;
+        case 2:
+            /* third quarter */
+            fullarc->p0x = 0 - fullarc->rad;
+            fullarc->p0y = 0;
+            fullarc->p1x = 0 - fullarc->rad;
+            fullarc->p1y = 0 - (int32_t)tang;
+            fullarc->p2x = 0 - (int32_t)tang;
+            fullarc->p2y = 0 - fullarc->rad;
+            fullarc->p3x = 0;
+            fullarc->p3y = 0 - fullarc->rad;
+            break;
+        case 3:
+            /* fourth quarter */
+            fullarc->p0x = 0;
+            fullarc->p0y = 0 - fullarc->rad;
+            fullarc->p1x = (int32_t)tang;
+            fullarc->p1y = 0 - fullarc->rad;
+            fullarc->p2x = fullarc->rad;
+            fullarc->p2y = 0 - (int32_t)tang;
+            fullarc->p3x = fullarc->rad;
+            fullarc->p3y = 0;
+            break;
+        default:
+            LV_LOG_ERROR("Invalid arc quarter value.");
+            break;
+    }
+}
+
+/**
+ * Linear interpolation between two points 'a' and 'b'
+ * 't' parameter is the proportion ratio expressed in range [0 ; T_FRACTION ]
+ */
+static inline float lerp(float coord_a, float coord_b, uint16_t t)
+{
+    float tf = (float)t;
+    return ((T_FRACTION - tf) * coord_a + tf * coord_b) / T_FRACTION;
+}
+
+/**
+ * Computes a point of bezier curve given 't' param
+ */
+static inline float comp_bezier_point(float t, cubic_cont_pt cp)
+{
+    float t_sq = t * t;
+    float inv_t_sq = (1.0f - t) * (1.0f - t);
+    float apt = (1.0f - t) * inv_t_sq * cp.p0 + 3.0f * inv_t_sq * t * cp.p1 + 3.0f * (1.0f - t) * t_sq * cp.p2 + t * t_sq *
+                cp.p3;
+    return apt;
+}
+
+/**
+ * Find parameter 't' in curve at point 'pt'
+ * proceed by dichotomy on only 1 dimension,
+ * works only if the curve is monotonic
+ * bezier curve is defined by control points [p0 p1 p2 p3]
+ * 'dec' tells if curve is decreasing (true) or increasing (false)
+ */
+static uint16_t get_bez_t_from_pos(float pt, cubic_cont_pt cp, bool dec)
+{
+    /* initialize dichotomy with boundary 't' values */
+    float t_low = 0.0f;
+    float t_mid = 0.5f;
+    float t_hig = 1.0f;
+    float a_pt;
+    /* dichotomy loop */
+    for(int i = 0; i < DICHOTO_ITER; i++) {
+        a_pt = comp_bezier_point(t_mid, cp);
+        /* check mid-point position on bezier curve versus targeted point */
+        if((a_pt > pt) != dec) {
+            t_hig = t_mid;
+        }
+        else {
+            t_low = t_mid;
+        }
+        /* define new 't' param for mid-point */
+        t_mid = (t_low + t_hig) / 2.0f;
+    }
+    /* return parameter 't' in integer range [0 ; T_FRACTION] */
+    return (uint16_t)floorf(t_mid * T_FRACTION + 0.5f);
+}
+
+/**
+ * Gives relative coords of the control points
+ * for the sub-arc starting at angle with given angle span
+ */
+static void get_subarc_control_points(vg_arc * arc, int32_t span)
+{
+    vg_arc fullarc;
+    fullarc.angle = arc->angle;
+    fullarc.quarter = arc->quarter;
+    fullarc.rad = arc->rad;
+    set_full_arc(&fullarc);
+
+    /* special case of full arc */
+    if(arc->angle == 90) {
+        copy_arc(arc, &fullarc);
+        return;
+    }
+
+    /* compute 1st arc using the geometric construction of curve */
+    uint16_t t2 = TperDegree[arc->angle + span];
+
+    /* lerp for A */
+    float a2x = lerp((float)fullarc.p0x, (float)fullarc.p1x, t2);
+    float a2y = lerp((float)fullarc.p0y, (float)fullarc.p1y, t2);
+    /* lerp for B */
+    float b2x = lerp((float)fullarc.p1x, (float)fullarc.p2x, t2);
+    float b2y = lerp((float)fullarc.p1y, (float)fullarc.p2y, t2);
+    /* lerp for C */
+    float c2x = lerp((float)fullarc.p2x, (float)fullarc.p3x, t2);
+    float c2y = lerp((float)fullarc.p2y, (float)fullarc.p3y, t2);
+
+    /* lerp for D */
+    float d2x = lerp(a2x, b2x, t2);
+    float d2y = lerp(a2y, b2y, t2);
+    /* lerp for E */
+    float e2x = lerp(b2x, c2x, t2);
+    float e2y = lerp(b2y, c2y, t2);
+
+    float pt2x = lerp(d2x, e2x, t2);
+    float pt2y = lerp(d2y, e2y, t2);
+
+    /* compute sub-arc using the geometric construction of curve */
+    uint16_t t1 = TperDegree[arc->angle];
+
+    /* lerp for A */
+    float a1x = lerp((float)fullarc.p0x, (float)fullarc.p1x, t1);
+    float a1y = lerp((float)fullarc.p0y, (float)fullarc.p1y, t1);
+    /* lerp for B */
+    float b1x = lerp((float)fullarc.p1x, (float)fullarc.p2x, t1);
+    float b1y = lerp((float)fullarc.p1y, (float)fullarc.p2y, t1);
+    /* lerp for C */
+    float c1x = lerp((float)fullarc.p2x, (float)fullarc.p3x, t1);
+    float c1y = lerp((float)fullarc.p2y, (float)fullarc.p3y, t1);
+
+    /* lerp for D */
+    float d1x = lerp(a1x, b1x, t1);
+    float d1y = lerp(a1y, b1y, t1);
+    /* lerp for E */
+    float e1x = lerp(b1x, c1x, t1);
+    float e1y = lerp(b1y, c1y, t1);
+
+    float pt1x = lerp(d1x, e1x, t1);
+    float pt1y = lerp(d1y, e1y, t1);
+
+    /* find the 't3' parameter for point P(t1) on the sub-arc [P0 A2 D2 P(t2)] using dichotomy
+     * use position of x axis only */
+    uint16_t t3;
+    t3 = get_bez_t_from_pos(pt1x,
+    (cubic_cont_pt) {
+        .p0 = ((float)fullarc.p0x), .p1 = a2x, .p2 = d2x, .p3 = pt2x
+    },
+    (bool)(pt2x < (float)fullarc.p0x));
+
+    /* lerp for B */
+    float b3x = lerp(a2x, d2x, t3);
+    float b3y = lerp(a2y, d2y, t3);
+    /* lerp for C */
+    float c3x = lerp(d2x, pt2x, t3);
+    float c3y = lerp(d2y, pt2y, t3);
+
+    /* lerp for E */
+    float e3x = lerp(b3x, c3x, t3);
+    float e3y = lerp(b3y, c3y, t3);
+
+    arc->p0x = (int32_t)floorf(0.5f + pt1x);
+    arc->p0y = (int32_t)floorf(0.5f + pt1y);
+    arc->p1x = (int32_t)floorf(0.5f + e3x);
+    arc->p1y = (int32_t)floorf(0.5f + e3y);
+    arc->p2x = (int32_t)floorf(0.5f + c3x);
+    arc->p2y = (int32_t)floorf(0.5f + c3y);
+    arc->p3x = (int32_t)floorf(0.5f + pt2x);
+    arc->p3y = (int32_t)floorf(0.5f + pt2y);
+}
+
+/**
+ * Gives relative coords of the control points
+ */
+static void get_arc_control_points(vg_arc * arc, bool start)
+{
+    vg_arc fullarc;
+    fullarc.angle = arc->angle;
+    fullarc.quarter = arc->quarter;
+    fullarc.rad = arc->rad;
+    set_full_arc(&fullarc);
+
+    /* special case of full arc */
+    if(arc->angle == 90) {
+        copy_arc(arc, &fullarc);
+        return;
+    }
+
+    /* compute sub-arc using the geometric construction of curve */
+    uint16_t t = TperDegree[arc->angle];
+    /* lerp for A */
+    float ax = lerp((float)fullarc.p0x, (float)fullarc.p1x, t);
+    float ay = lerp((float)fullarc.p0y, (float)fullarc.p1y, t);
+    /* lerp for B */
+    float bx = lerp((float)fullarc.p1x, (float)fullarc.p2x, t);
+    float by = lerp((float)fullarc.p1y, (float)fullarc.p2y, t);
+    /* lerp for C */
+    float cx = lerp((float)fullarc.p2x, (float)fullarc.p3x, t);
+    float cy = lerp((float)fullarc.p2y, (float)fullarc.p3y, t);
+
+    /* lerp for D */
+    float dx = lerp(ax, bx, t);
+    float dy = lerp(ay, by, t);
+    /* lerp for E */
+    float ex = lerp(bx, cx, t);
+    float ey = lerp(by, cy, t);
+
+    /* sub-arc's control points are tangents of DeCasteljau's algorithm */
+    if(start) {
+        arc->p0x = (int32_t)floorf(0.5f + lerp(dx, ex, t));
+        arc->p0y = (int32_t)floorf(0.5f + lerp(dy, ey, t));
+        arc->p1x = (int32_t)floorf(0.5f + ex);
+        arc->p1y = (int32_t)floorf(0.5f + ey);
+        arc->p2x = (int32_t)floorf(0.5f + cx);
+        arc->p2y = (int32_t)floorf(0.5f + cy);
+        arc->p3x = fullarc.p3x;
+        arc->p3y = fullarc.p3y;
+    }
+    else {
+        arc->p0x = fullarc.p0x;
+        arc->p0y = fullarc.p0y;
+        arc->p1x = (int32_t)floorf(0.5f + ax);
+        arc->p1y = (int32_t)floorf(0.5f + ay);
+        arc->p2x = (int32_t)floorf(0.5f + dx);
+        arc->p2y = (int32_t)floorf(0.5f + dy);
+        arc->p3x = (int32_t)floorf(0.5f + lerp(dx, ex, t));
+        arc->p3y = (int32_t)floorf(0.5f + lerp(dy, ey, t));
+    }
+}
+
+/**
+ * Add the arc control points into the path data for vglite,
+ * taking into account the real center of the arc (translation).
+ * arc_path: (in/out) the path data array for vglite
+ * pidx: (in/out) index of last element added in arc_path
+ * q_arc: (in) the arc data containing control points
+ * center: (in) the center of the circle in draw coordinates
+ * cw: (in) true if arc is clockwise
+ */
+static void add_split_arc_path(int32_t * arc_path, int * pidx, vg_arc * q_arc, lv_point_t center, bool cw)
+{
+    /* assumes first control point already in array arc_path[] */
+    int idx = *pidx;
+    if(cw) {
+#if BEZIER_DBG_CONTROL_POINTS
+        arc_path[idx++] = VLC_OP_LINE;
+        arc_path[idx++] = q_arc->p1x + center.x;
+        arc_path[idx++] = q_arc->p1y + center.y;
+        arc_path[idx++] = VLC_OP_LINE;
+        arc_path[idx++] = q_arc->p2x + center.x;
+        arc_path[idx++] = q_arc->p2y + center.y;
+        arc_path[idx++] = VLC_OP_LINE;
+        arc_path[idx++] = q_arc->p3x + center.x;
+        arc_path[idx++] = q_arc->p3y + center.y;
+#else
+        arc_path[idx++] = VLC_OP_CUBIC;
+        arc_path[idx++] = q_arc->p1x + center.x;
+        arc_path[idx++] = q_arc->p1y + center.y;
+        arc_path[idx++] = q_arc->p2x + center.x;
+        arc_path[idx++] = q_arc->p2y + center.y;
+        arc_path[idx++] = q_arc->p3x + center.x;
+        arc_path[idx++] = q_arc->p3y + center.y;
+#endif
+    }
+    else {      /* reverse points order when counter-clockwise */
+#if BEZIER_DBG_CONTROL_POINTS
+        arc_path[idx++] = VLC_OP_LINE;
+        arc_path[idx++] = q_arc->p2x + center.x;
+        arc_path[idx++] = q_arc->p2y + center.y;
+        arc_path[idx++] = VLC_OP_LINE;
+        arc_path[idx++] = q_arc->p1x + center.x;
+        arc_path[idx++] = q_arc->p1y + center.y;
+        arc_path[idx++] = VLC_OP_LINE;
+        arc_path[idx++] = q_arc->p0x + center.x;
+        arc_path[idx++] = q_arc->p0y + center.y;
+#else
+        arc_path[idx++] = VLC_OP_CUBIC;
+        arc_path[idx++] = q_arc->p2x + center.x;
+        arc_path[idx++] = q_arc->p2y + center.y;
+        arc_path[idx++] = q_arc->p1x + center.x;
+        arc_path[idx++] = q_arc->p1y + center.y;
+        arc_path[idx++] = q_arc->p0x + center.x;
+        arc_path[idx++] = q_arc->p0y + center.y;
+#endif
+    }
+    /* update index i n path array*/
+    *pidx = idx;
+}
+
+static void add_arc_path(int32_t * arc_path, int * pidx, int32_t radius,
+                         int32_t start_angle, int32_t end_angle, lv_point_t center, bool cw)
+{
+    /* set number of arcs to draw */
+    vg_arc q_arc;
+    int32_t start_arc_angle = start_angle % 90;
+    int32_t end_arc_angle = end_angle % 90;
+    int32_t inv_start_arc_angle = (start_arc_angle > 0) ? (90 - start_arc_angle) : 0;
+    int32_t nbarc = (end_angle - start_angle - inv_start_arc_angle - end_arc_angle) / 90;
+    q_arc.rad = radius;
+
+    /* handle special case of start & end point in the same quarter */
+    if(((start_angle / 90) == (end_angle / 90)) && (nbarc <= 0)) {
+        q_arc.quarter = (start_angle / 90) % 4;
+        q_arc.angle = start_arc_angle;
+        get_subarc_control_points(&q_arc, end_arc_angle - start_arc_angle);
+        add_split_arc_path(arc_path, pidx, &q_arc, center, cw);
+        return;
+    }
+
+    if(cw) {
+        /* partial starting arc */
+        if(start_arc_angle > 0) {
+            q_arc.quarter = (start_angle / 90) % 4;
+            q_arc.angle = start_arc_angle;
+            /* get cubic points relative to center */
+            get_arc_control_points(&q_arc, true);
+            /* put cubic points in arc_path */
+            add_split_arc_path(arc_path, pidx, &q_arc, center, cw);
+        }
+        /* full arcs */
+        for(int32_t q = 0; q < nbarc ; q++) {
+            q_arc.quarter = (q + ((start_angle + 89) / 90)) % 4;
+            q_arc.angle = 90;
+            /* get cubic points relative to center */
+            get_arc_control_points(&q_arc, true);   /* 2nd parameter 'start' ignored */
+            /* put cubic points in arc_path */
+            add_split_arc_path(arc_path, pidx, &q_arc, center, cw);
+        }
+        /* partial ending arc */
+        if(end_arc_angle > 0) {
+            q_arc.quarter = (end_angle / 90) % 4;
+            q_arc.angle = end_arc_angle;
+            /* get cubic points relative to center */
+            get_arc_control_points(&q_arc, false);
+            /* put cubic points in arc_path */
+            add_split_arc_path(arc_path, pidx, &q_arc, center, cw);
+        }
+
+    }
+    else {   /* counter clockwise */
+
+        /* partial ending arc */
+        if(end_arc_angle > 0) {
+            q_arc.quarter = (end_angle / 90) % 4;
+            q_arc.angle = end_arc_angle;
+            /* get cubic points relative to center */
+            get_arc_control_points(&q_arc, false);
+            /* put cubic points in arc_path */
+            add_split_arc_path(arc_path, pidx, &q_arc, center, cw);
+        }
+        /* full arcs */
+        for(int32_t q = nbarc - 1; q >= 0; q--) {
+            q_arc.quarter = (q + ((start_angle + 89) / 90)) % 4;
+            q_arc.angle = 90;
+            /* get cubic points relative to center */
+            get_arc_control_points(&q_arc, true);   /* 2nd parameter 'start' ignored */
+            /* put cubic points in arc_path */
+            add_split_arc_path(arc_path, pidx, &q_arc, center, cw);
+        }
+        /* partial starting arc */
+        if(start_arc_angle > 0) {
+            q_arc.quarter = (start_angle / 90) % 4;
+            q_arc.angle = start_arc_angle;
+            /* get cubic points relative to center */
+            get_arc_control_points(&q_arc, true);
+            /* put cubic points in arc_path */
+            add_split_arc_path(arc_path, pidx, &q_arc, center, cw);
+        }
+    }
+}
+
+#endif /*LV_USE_GPU_NXP_VG_LITE*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/vglite/lv_draw_vglite_arc.h

@@ -0,0 +1,79 @@
+/**
+ * @file lv_draw_vglite_arc.h
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2021, 2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef LV_DRAW_VGLITE_ARC_H
+#define LV_DRAW_VGLITE_ARC_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../../lv_conf_internal.h"
+
+#if LV_USE_GPU_NXP_VG_LITE
+#include "lv_gpu_nxp_vglite.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/***
+ * Draw arc shape with effects
+ * @param draw_ctx drawing context
+ * @param dsc the arc description structure (width, rounded ending, opacity)
+ * @param center the coordinates of the arc center
+ * @param radius the radius of external arc
+ * @param start_angle the starting angle in degrees
+ * @param end_angle the ending angle in degrees
+ */
+lv_res_t lv_gpu_nxp_vglite_draw_arc(lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center,
+                                    int32_t radius, int32_t start_angle, int32_t end_angle);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_GPU_NXP_VG_LITE*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_VGLITE_ARC_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/vglite/lv_draw_vglite_blend.c

@@ -0,0 +1,618 @@
+/**
+ * @file lv_draw_vglite_blend.c
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2020-2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "lv_draw_vglite_blend.h"
+
+#if LV_USE_GPU_NXP_VG_LITE
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/* Enable BLIT quality degradation workaround for RT595, recommended for screen's dimension > 352 pixels */
+#define RT595_BLIT_WRKRND_ENABLED 1
+
+/* Internal compound symbol */
+#if (defined(CPU_MIMXRT595SFFOB) || defined(CPU_MIMXRT595SFFOB_cm33) || \
+    defined(CPU_MIMXRT595SFFOC) || defined(CPU_MIMXRT595SFFOC_cm33)) && \
+    RT595_BLIT_WRKRND_ENABLED
+#define VG_LITE_BLIT_SPLIT_ENABLED 1
+#else
+#define VG_LITE_BLIT_SPLIT_ENABLED 0
+#endif
+
+/**
+ * BLIT split threshold - BLITs with width or height higher than this value will be done
+ * in multiple steps. Value must be 16-aligned. Don't change.
+ */
+#define LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR 352
+
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**
+ * BLock Image Transfer - single direct BLIT.
+ *
+ * @param[in] blit Description of the transfer
+ * @retval LV_RES_OK Transfer complete
+ * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_VG_LITE_LOG_ERRORS)
+ */
+static lv_res_t _lv_gpu_nxp_vglite_blit_single(lv_gpu_nxp_vglite_blit_info_t * blit);
+
+#if VG_LITE_BLIT_SPLIT_ENABLED
+
+    /**
+    * Move buffer pointer as close as possible to area, but with respect to alignment requirements. X-axis only.
+    *
+    * @param[in,out] area Area to be updated
+    * @param[in,out] buf Pointer to be updated
+    */
+    static void _align_x(lv_area_t * area, lv_color_t ** buf);
+
+    /**
+    * Move buffer pointer to the area start and update variables, Y-axis only.
+    *
+    * @param[in,out] area Area to be updated
+    * @param[in,out] buf Pointer to be updated
+    * @param[in] stridePx Buffer stride in pixels
+    */
+    static void _align_y(lv_area_t * area, lv_color_t ** buf, uint32_t stridePx);
+
+    /**
+    * Software BLIT as a fall-back scenario.
+    *
+    * @param[in] blit BLIT configuration
+    */
+    static void _sw_blit(lv_gpu_nxp_vglite_blit_info_t * blit);
+
+    /**
+    * Verify BLIT structure - widths, stride, pointer alignment
+    *
+    * @param[in] blit BLIT configuration
+    * @retval LV_RES_OK
+    * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_VG_LITE_LOG_ERRORS)
+    */
+    static lv_res_t _lv_gpu_nxp_vglite_check_blit(lv_gpu_nxp_vglite_blit_info_t * blit);
+
+    /**
+    * BLock Image Transfer - split BLIT.
+    *
+    * @param[in] blit BLIT configuration
+    * @retval LV_RES_OK Transfer complete
+    * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_VG_LITE_LOG_ERRORS)
+    */
+    static lv_res_t _lv_gpu_nxp_vglite_blit_split(lv_gpu_nxp_vglite_blit_info_t * blit);
+#endif
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_res_t lv_gpu_nxp_vglite_fill(lv_color_t * dest_buf, lv_coord_t dest_width, lv_coord_t dest_height,
+                                const lv_area_t * fill_area, lv_color_t color, lv_opa_t opa)
+{
+    uint32_t area_size = lv_area_get_size(fill_area);
+    lv_coord_t area_w = lv_area_get_width(fill_area);
+    lv_coord_t area_h = lv_area_get_height(fill_area);
+
+    if(opa >= (lv_opa_t)LV_OPA_MAX) {
+        if(area_size < LV_GPU_NXP_VG_LITE_FILL_SIZE_LIMIT)
+            VG_LITE_RETURN_INV("Area size %d smaller than limit %d.", area_size, LV_GPU_NXP_VG_LITE_FILL_SIZE_LIMIT);
+    }
+    else {
+        if(area_size < LV_GPU_NXP_VG_LITE_FILL_OPA_SIZE_LIMIT)
+            VG_LITE_RETURN_INV("Area size %d smaller than limit %d.", area_size, LV_GPU_NXP_VG_LITE_FILL_OPA_SIZE_LIMIT);
+    }
+
+    vg_lite_buffer_t vgbuf;
+    vg_lite_rectangle_t rect;
+    vg_lite_error_t err = VG_LITE_SUCCESS;
+    lv_color32_t col32 = {.full = lv_color_to32(color)}; /*Convert color to RGBA8888*/
+    vg_lite_color_t vgcol; /* vglite takes ABGR */
+
+    if(lv_vglite_init_buf(&vgbuf, (uint32_t)dest_width, (uint32_t)dest_height, (uint32_t)dest_width * sizeof(lv_color_t),
+                          (const lv_color_t *)dest_buf, false) != LV_RES_OK)
+        VG_LITE_RETURN_INV("Init buffer failed.");
+
+    if(opa >= (lv_opa_t)LV_OPA_MAX) {   /*Opaque fill*/
+        rect.x = fill_area->x1;
+        rect.y = fill_area->y1;
+        rect.width = area_w;
+        rect.height = area_h;
+
+        /*Clean & invalidate cache*/
+        lv_vglite_invalidate_cache();
+
+#if LV_COLOR_DEPTH==16
+        vgcol = col32.full;
+#else /*LV_COLOR_DEPTH==32*/
+        vgcol = ((uint32_t)col32.ch.alpha << 24) | ((uint32_t)col32.ch.blue << 16) | ((uint32_t)col32.ch.green << 8) |
+                (uint32_t)col32.ch.red;
+#endif
+
+        err = vg_lite_clear(&vgbuf, &rect, vgcol);
+        VG_LITE_ERR_RETURN_INV(err, "Clear failed.");
+
+        err = vg_lite_finish();
+        VG_LITE_ERR_RETURN_INV(err, "Finish failed.");
+    }
+    else {   /*fill with transparency*/
+
+        vg_lite_path_t path;
+        int32_t path_data[] = { /*VG rectangular path*/
+            VLC_OP_MOVE, fill_area->x1,  fill_area->y1,
+            VLC_OP_LINE, fill_area->x2 + 1,  fill_area->y1,
+            VLC_OP_LINE, fill_area->x2 + 1,  fill_area->y2 + 1,
+            VLC_OP_LINE, fill_area->x1,  fill_area->y2 + 1,
+            VLC_OP_LINE, fill_area->x1,  fill_area->y1,
+            VLC_OP_END
+        };
+
+        err = vg_lite_init_path(&path, VG_LITE_S32, VG_LITE_LOW, sizeof(path_data), path_data,
+                                (vg_lite_float_t) fill_area->x1, (vg_lite_float_t) fill_area->y1,
+                                ((vg_lite_float_t) fill_area->x2) + 1.0f, ((vg_lite_float_t) fill_area->y2) + 1.0f);
+        VG_LITE_ERR_RETURN_INV(err, "Init path failed.");
+
+        /* Only pre-multiply color if hardware pre-multiplication is not present */
+        if(!vg_lite_query_feature(gcFEATURE_BIT_VG_PE_PREMULTIPLY)) {
+            col32.ch.red = (uint8_t)(((uint16_t)col32.ch.red * opa) >> 8);
+            col32.ch.green = (uint8_t)(((uint16_t)col32.ch.green * opa) >> 8);
+            col32.ch.blue = (uint8_t)(((uint16_t)col32.ch.blue * opa) >> 8);
+        }
+        col32.ch.alpha = opa;
+
+#if LV_COLOR_DEPTH==16
+        vgcol = col32.full;
+#else /*LV_COLOR_DEPTH==32*/
+        vgcol = ((uint32_t)col32.ch.alpha << 24) | ((uint32_t)col32.ch.blue << 16) | ((uint32_t)col32.ch.green << 8) |
+                (uint32_t)col32.ch.red;
+#endif
+
+        /*Clean & invalidate cache*/
+        lv_vglite_invalidate_cache();
+
+        vg_lite_matrix_t matrix;
+        vg_lite_identity(&matrix);
+
+        /*Draw rectangle*/
+        err = vg_lite_draw(&vgbuf, &path, VG_LITE_FILL_EVEN_ODD, &matrix, VG_LITE_BLEND_SRC_OVER, vgcol);
+        VG_LITE_ERR_RETURN_INV(err, "Draw rectangle failed.");
+
+        err = vg_lite_finish();
+        VG_LITE_ERR_RETURN_INV(err, "Finish failed.");
+
+        err = vg_lite_clear_path(&path);
+        VG_LITE_ERR_RETURN_INV(err, "Clear path failed.");
+    }
+
+    return LV_RES_OK;
+}
+
+lv_res_t lv_gpu_nxp_vglite_blit(lv_gpu_nxp_vglite_blit_info_t * blit)
+{
+    uint32_t dest_size = lv_area_get_size(&blit->dst_area);
+
+    if(blit->opa >= (lv_opa_t)LV_OPA_MAX) {
+        if(dest_size < LV_GPU_NXP_VG_LITE_BLIT_SIZE_LIMIT)
+            VG_LITE_RETURN_INV("Area size %d smaller than limit %d.", dest_size, LV_GPU_NXP_VG_LITE_BLIT_SIZE_LIMIT);
+    }
+    else {
+        if(dest_size < LV_GPU_NXP_VG_LITE_BLIT_OPA_SIZE_LIMIT)
+            VG_LITE_RETURN_INV("Area size %d smaller than limit %d.", dest_size, LV_GPU_NXP_VG_LITE_BLIT_OPA_SIZE_LIMIT);
+    }
+
+#if VG_LITE_BLIT_SPLIT_ENABLED
+    return _lv_gpu_nxp_vglite_blit_split(blit);
+#endif /* non RT595 */
+
+    /* Just pass down */
+    return _lv_gpu_nxp_vglite_blit_single(blit);
+}
+
+lv_res_t lv_gpu_nxp_vglite_blit_transform(lv_gpu_nxp_vglite_blit_info_t * blit)
+{
+    uint32_t dest_size = lv_area_get_size(&blit->dst_area);
+
+    if(blit->opa >= (lv_opa_t)LV_OPA_MAX) {
+        if(dest_size < LV_GPU_NXP_VG_LITE_BLIT_SIZE_LIMIT)
+            VG_LITE_RETURN_INV("Area size %d smaller than limit %d.", dest_size, LV_GPU_NXP_VG_LITE_BLIT_SIZE_LIMIT);
+    }
+    else {
+        if(dest_size < LV_GPU_NXP_VG_LITE_BLIT_OPA_SIZE_LIMIT)
+            VG_LITE_RETURN_INV("Area size %d smaller than limit %d.", dest_size, LV_GPU_NXP_VG_LITE_BLIT_OPA_SIZE_LIMIT);
+    }
+
+    return _lv_gpu_nxp_vglite_blit_single(blit);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#if VG_LITE_BLIT_SPLIT_ENABLED
+static lv_res_t _lv_gpu_nxp_vglite_blit_split(lv_gpu_nxp_vglite_blit_info_t * blit)
+{
+    lv_res_t rv = LV_RES_INV;
+
+    if(_lv_gpu_nxp_vglite_check_blit(blit) != LV_RES_OK) {
+        PRINT_BLT("Blit check failed\n");
+        return LV_RES_INV;
+    }
+
+    PRINT_BLT("BLIT from: "
+              "Area: %03d,%03d - %03d,%03d "
+              "Addr: %d\n\n",
+              blit->src_area.x1, blit->src_area.y1,
+              blit->src_area.x2, blit->src_area.y2,
+              (uintptr_t) blit->src);
+
+    PRINT_BLT("BLIT to: "
+              "Area: %03d,%03d - %03d,%03d "
+              "Addr: %d\n\n",
+              blit->dst_area.x1, blit->dst_area.y1,
+              blit->dst_area.x2, blit->dst_area.y2,
+              (uintptr_t) blit->src);
+
+    /* Stage 1: Move starting pointers as close as possible to [x1, y1], so coordinates are as small as possible.  */
+    _align_x(&blit->src_area, (lv_color_t **)&blit->src);
+    _align_y(&blit->src_area, (lv_color_t **)&blit->src,  blit->src_stride / sizeof(lv_color_t));
+    _align_x(&blit->dst_area, (lv_color_t **)&blit->dst);
+    _align_y(&blit->dst_area, (lv_color_t **)&blit->dst,  blit->dst_stride / sizeof(lv_color_t));
+
+    /* Stage 2: If we're in limit, do a single BLIT */
+    if((blit->src_area.x2 < LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR) &&
+       (blit->src_area.y2 < LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR)) {
+        PRINT_BLT("Simple blit!\n");
+        return _lv_gpu_nxp_vglite_blit_single(blit);
+    };
+
+    /* Stage 3: Split the BLIT into multiple tiles */
+    PRINT_BLT("Split blit!\n");
+
+    PRINT_BLT("Blit "
+              "([%03d,%03d], [%03d,%03d]) -> "
+              "([%03d,%03d], [%03d,%03d]) | "
+              "([%03dx%03d] -> [%03dx%03d]) | "
+              "A:(%d -> %d)\n",
+              blit->src_area.x1, blit->src_area.y1, blit->src_area.x2, blit->src_area.y2,
+              blit->dst_area.x1, blit->dst_area.y1, blit->dst_area.x2, blit->dst_area.y2,
+              lv_area_get_width(&blit->src_area), lv_area_get_height(&blit->src_area),
+              lv_area_get_width(&blit->dst_area), lv_area_get_height(&blit->dst_area),
+              (uintptr_t) blit->src, (uintptr_t) blit->dst);
+
+
+    lv_coord_t totalWidth = lv_area_get_width(&blit->src_area);
+    lv_coord_t totalHeight = lv_area_get_height(&blit->src_area);
+
+    lv_gpu_nxp_vglite_blit_info_t tileBlit;
+
+    /* Number of tiles needed */
+    int totalTilesX = (blit->src_area.x1 + totalWidth + LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR - 1) /
+                      LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR;
+    int totalTilesY = (blit->src_area.y1 + totalHeight + LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR - 1) /
+                      LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR;
+
+    /* src and dst buffer shift against each other. Src buffer real data [0,0] may start actually at [3,0] in buffer, as
+     * the buffer pointer has to be aligned, while dst buffer real data [0,0] may start at [1,0] in buffer. alignment may be
+     * different */
+    int shiftSrcX = (blit->src_area.x1 > blit->dst_area.x1) ? (blit->src_area.x1 - blit->dst_area.x1) : 0;
+    int shiftDstX = (blit->src_area.x1 < blit->dst_area.x1) ? (blit->dst_area.x1 - blit->src_area.x1) : 0;
+
+    PRINT_BLT("\n");
+    PRINT_BLT("Align shift: src: %d, dst: %d\n", shiftSrcX, shiftDstX);
+
+    tileBlit = *blit;
+
+    for(int tileY = 0; tileY < totalTilesY; tileY++) {
+
+        tileBlit.src_area.y1 = 0; /* no vertical alignment, always start from 0 */
+        tileBlit.src_area.y2 = totalHeight - tileY * LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR - 1;
+        if(tileBlit.src_area.y2 >= LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR) {
+            tileBlit.src_area.y2 = LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR - 1; /* Should never happen */
+        }
+        tileBlit.src = blit->src + tileY * LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR * blit->src_stride / sizeof(
+                           lv_color_t); /* stride in px! */
+
+        tileBlit.dst_area.y1 = tileBlit.src_area.y1; /* y has no alignment, always in sync with src */
+        tileBlit.dst_area.y2 = tileBlit.src_area.y2;
+
+        tileBlit.dst = blit->dst + tileY * LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR * blit->dst_stride / sizeof(
+                           lv_color_t); /* stride in px! */
+
+        for(int tileX = 0; tileX < totalTilesX; tileX++) {
+
+            if(tileX == 0) {
+                /* 1st tile is special - there may be a gap between buffer start pointer
+                 * and area.x1 value, as the pointer has to be aligned.
+                 * tileBlit.src pointer - keep init value from Y-loop.
+                 * Also, 1st tile start is not shifted! shift is applied from 2nd tile */
+                tileBlit.src_area.x1 = blit->src_area.x1;
+                tileBlit.dst_area.x1 = blit->dst_area.x1;
+            }
+            else {
+                /* subsequent tiles always starts from 0, but shifted*/
+                tileBlit.src_area.x1 = 0 + shiftSrcX;
+                tileBlit.dst_area.x1 = 0 + shiftDstX;
+                /* and advance start pointer + 1 tile size */
+                tileBlit.src += LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR;
+                tileBlit.dst += LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR;
+            }
+
+            /* Clip tile end coordinates */
+            tileBlit.src_area.x2 = totalWidth + blit->src_area.x1 - tileX * LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR - 1;
+            if(tileBlit.src_area.x2 >= LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR) {
+                tileBlit.src_area.x2 = LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR - 1;
+            }
+
+            tileBlit.dst_area.x2 = totalWidth + blit->dst_area.x1 - tileX * LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR - 1;
+            if(tileBlit.dst_area.x2 >= LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR) {
+                tileBlit.dst_area.x2 = LV_GPU_NXP_VG_LITE_BLIT_SPLIT_THR - 1;
+            }
+
+            if(tileX < (totalTilesX - 1)) {
+                /* And adjust end coords if shifted,  but not for last tile! */
+                tileBlit.src_area.x2 += shiftSrcX;
+                tileBlit.dst_area.x2 += shiftDstX;
+            }
+
+            rv = _lv_gpu_nxp_vglite_blit_single(&tileBlit);
+
+#if BLIT_DBG_AREAS
+            lv_vglite_dbg_draw_rectangle((lv_color_t *) tileBlit.dst, tileBlit.dst_width, tileBlit.dst_height, &tileBlit.dst_area,
+                                         LV_COLOR_RED);
+            lv_vglite_dbg_draw_rectangle((lv_color_t *) tileBlit.src, tileBlit.src_width, tileBlit.src_height, &tileBlit.src_area,
+                                         LV_COLOR_GREEN);
+#endif
+
+            PRINT_BLT("Tile [%d, %d]: "
+                      "([%d,%d], [%d,%d]) -> "
+                      "([%d,%d], [%d,%d]) | "
+                      "([%dx%d] -> [%dx%d]) | "
+                      "A:(0x%8X -> 0x%8X) %s\n",
+                      tileX, tileY,
+                      tileBlit.src_area.x1, tileBlit.src_area.y1, tileBlit.src_area.x2, tileBlit.src_area.y2,
+                      tileBlit.dst_area.x1, tileBlit.dst_area.y1, tileBlit.dst_area.x2, tileBlit.dst_area.y2,
+                      lv_area_get_width(&tileBlit.src_area), lv_area_get_height(&tileBlit.src_area),
+                      lv_area_get_width(&tileBlit.dst_area), lv_area_get_height(&tileBlit.dst_area),
+                      (uintptr_t) tileBlit.src, (uintptr_t) tileBlit.dst,
+                      rv == LV_RES_OK ? "OK!" : "!!! FAILED !!!");
+
+            if(rv != LV_RES_OK) { /* if anything goes wrong... */
+#if LV_GPU_NXP_VG_LITE_LOG_ERRORS
+                LV_LOG_ERROR("Split blit failed. Trying SW blit instead.");
+#endif
+                _sw_blit(&tileBlit);
+                rv = LV_RES_OK; /* Don't report error, as SW BLIT was performed */
+            }
+
+        }
+        PRINT_BLT(" \n");
+    }
+
+    return rv; /* should never fail */
+}
+#endif /* VG_LITE_BLIT_SPLIT_ENABLED */
+
+static lv_res_t _lv_gpu_nxp_vglite_blit_single(lv_gpu_nxp_vglite_blit_info_t * blit)
+{
+    vg_lite_buffer_t src_vgbuf, dst_vgbuf;
+    vg_lite_error_t err = VG_LITE_SUCCESS;
+    uint32_t rect[4];
+    vg_lite_float_t scale = 1.0;
+
+    if(blit == NULL) {
+        /*Wrong parameter*/
+        return LV_RES_INV;
+    }
+
+    if(blit->opa < (lv_opa_t) LV_OPA_MIN) {
+        return LV_RES_OK; /*Nothing to BLIT*/
+    }
+
+    /*Wrap src/dst buffer into VG-Lite buffer*/
+    if(lv_vglite_init_buf(&src_vgbuf, (uint32_t)blit->src_width, (uint32_t)blit->src_height, (uint32_t)blit->src_stride,
+                          blit->src, true) != LV_RES_OK)
+        VG_LITE_RETURN_INV("Init buffer failed.");
+
+    if(lv_vglite_init_buf(&dst_vgbuf, (uint32_t)blit->dst_width, (uint32_t)blit->dst_height, (uint32_t)blit->dst_stride,
+                          blit->dst, false) != LV_RES_OK)
+        VG_LITE_RETURN_INV("Init buffer failed.");
+
+    rect[0] = (uint32_t)blit->src_area.x1; /* start x */
+    rect[1] = (uint32_t)blit->src_area.y1; /* start y */
+    rect[2] = (uint32_t)blit->src_area.x2 - (uint32_t)blit->src_area.x1 + 1U; /* width */
+    rect[3] = (uint32_t)blit->src_area.y2 - (uint32_t)blit->src_area.y1 + 1U; /* height */
+
+    vg_lite_matrix_t matrix;
+    vg_lite_identity(&matrix);
+    vg_lite_translate((vg_lite_float_t)blit->dst_area.x1, (vg_lite_float_t)blit->dst_area.y1, &matrix);
+
+    if((blit->angle != 0) || (blit->zoom != LV_IMG_ZOOM_NONE)) {
+        vg_lite_translate(blit->pivot.x, blit->pivot.y, &matrix);
+        vg_lite_rotate(blit->angle / 10.0f, &matrix);   /* angle is 1/10 degree */
+        scale = 1.0f * blit->zoom / LV_IMG_ZOOM_NONE;
+        vg_lite_scale(scale, scale, &matrix);
+        vg_lite_translate(0.0f - blit->pivot.x, 0.0f - blit->pivot.y, &matrix);
+    }
+
+    /*Clean & invalidate cache*/
+    lv_vglite_invalidate_cache();
+
+    uint32_t color;
+    vg_lite_blend_t blend;
+    if(blit->opa >= (lv_opa_t)LV_OPA_MAX) {
+        color = 0xFFFFFFFFU;
+        blend = VG_LITE_BLEND_SRC_OVER;
+        src_vgbuf.transparency_mode = VG_LITE_IMAGE_TRANSPARENT;
+    }
+    else {
+        uint32_t opa = (uint32_t)blit->opa;
+        if(vg_lite_query_feature(gcFEATURE_BIT_VG_PE_PREMULTIPLY)) {
+            color = (opa << 24) | 0x00FFFFFFU;
+        }
+        else {
+            color = (opa << 24) | (opa << 16) | (opa << 8) | opa;
+        }
+        blend = VG_LITE_BLEND_SRC_OVER;
+        src_vgbuf.image_mode = VG_LITE_MULTIPLY_IMAGE_MODE;
+        src_vgbuf.transparency_mode = VG_LITE_IMAGE_TRANSPARENT;
+    }
+
+    err = vg_lite_blit_rect(&dst_vgbuf, &src_vgbuf, rect, &matrix, blend, color, VG_LITE_FILTER_POINT);
+    VG_LITE_ERR_RETURN_INV(err, "Blit rectangle failed.");
+
+    err = vg_lite_finish();
+    VG_LITE_ERR_RETURN_INV(err, "Finish failed.");
+
+    return LV_RES_OK;
+}
+
+#if VG_LITE_BLIT_SPLIT_ENABLED
+
+static void _sw_blit(lv_gpu_nxp_vglite_blit_info_t * blit)
+{
+    int x, y;
+
+    lv_coord_t w = lv_area_get_width(&blit->src_area);
+    lv_coord_t h = lv_area_get_height(&blit->src_area);
+
+    int32_t srcStridePx = blit->src_stride / (int32_t)sizeof(lv_color_t);
+    int32_t dstStridePx = blit->dst_stride / (int32_t)sizeof(lv_color_t);
+
+    lv_color_t * src = (lv_color_t *)blit->src + blit->src_area.y1 * srcStridePx + blit->src_area.x1;
+    lv_color_t * dst = (lv_color_t *)blit->dst + blit->dst_area.y1 * dstStridePx + blit->dst_area.x1;
+
+    if(blit->opa >= (lv_opa_t)LV_OPA_MAX) {
+        /* simple copy */
+        for(y = 0; y < h; y++) {
+            lv_memcpy(dst, src, (uint32_t)w * sizeof(lv_color_t));
+            src += srcStridePx;
+            dst += dstStridePx;
+        }
+    }
+    else if(blit->opa >= LV_OPA_MIN) {
+        /* alpha blending */
+        for(y = 0; y < h; y++) {
+            for(x = 0; x < w; x++) {
+                dst[x] = lv_color_mix(src[x], dst[x], blit->opa);
+            }
+            src += srcStridePx;
+            dst += dstStridePx;
+        }
+    }
+}
+
+static lv_res_t _lv_gpu_nxp_vglite_check_blit(lv_gpu_nxp_vglite_blit_info_t * blit)
+{
+
+    /* Test for minimal width */
+    if(lv_area_get_width(&blit->src_area) < (lv_coord_t)LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX)
+        VG_LITE_RETURN_INV("Src area width (%d) is smaller than required (%d).", lv_area_get_width(&blit->src_area),
+                           LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX);
+
+    /* Test for minimal width */
+    if(lv_area_get_width(&blit->dst_area) < (lv_coord_t)LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX)
+        VG_LITE_RETURN_INV("Dest area width (%d) is smaller than required (%d).", lv_area_get_width(&blit->dst_area),
+                           LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX);
+
+    /* Test for pointer alignment */
+    if((((uintptr_t) blit->src) % LV_ATTRIBUTE_MEM_ALIGN_SIZE) != 0x0)
+        VG_LITE_RETURN_INV("Src buffer ptr (0x%X) not aligned to %d.", (size_t) blit->src, LV_ATTRIBUTE_MEM_ALIGN_SIZE);
+
+    /* No alignment requirement for destination pixel buffer when using mode VG_LITE_LINEAR */
+
+    /* Test for stride alignment */
+    if((blit->src_stride % (LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX * LV_COLOR_DEPTH / 8)) !=  0x0)
+        VG_LITE_RETURN_INV("Src buffer stride (%d px) not aligned to %d px.", blit->src_stride,
+                           LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX);
+
+    /* Test for stride alignment */
+    if((blit->dst_stride % (LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX * LV_COLOR_DEPTH / 8)) !=  0x0)
+        VG_LITE_RETURN_INV("Dest buffer stride (%d px) not aligned to %d px.", blit->dst_stride,
+                           LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX);
+
+    if((lv_area_get_width(&blit->src_area) != lv_area_get_width(&blit->dst_area)) ||
+       (lv_area_get_height(&blit->src_area) != lv_area_get_height(&blit->dst_area)))
+        VG_LITE_RETURN_INV("Src and dest buffer areas are not equal.");
+
+    return LV_RES_OK;
+}
+
+static void _align_x(lv_area_t * area, lv_color_t ** buf)
+{
+
+    int alignedAreaStartPx = area->x1 - (area->x1 % (LV_ATTRIBUTE_MEM_ALIGN_SIZE * 8 / LV_COLOR_DEPTH));
+    VG_LITE_COND_STOP(alignedAreaStartPx < 0, "Negative X alignment.");
+
+    area->x1 -= alignedAreaStartPx;
+    area->x2 -= alignedAreaStartPx;
+    *buf += alignedAreaStartPx;
+}
+
+static void _align_y(lv_area_t * area, lv_color_t ** buf, uint32_t stridePx)
+{
+    int LineToAlignMem;
+    int alignedAreaStartPy;
+    /* find how many lines of pixels will respect memory alignment requirement */
+    if(stridePx % (uint32_t)LV_ATTRIBUTE_MEM_ALIGN_SIZE == 0U) {
+        alignedAreaStartPy = area->y1;
+    }
+    else {
+        LineToAlignMem = LV_ATTRIBUTE_MEM_ALIGN_SIZE / (sizeof(lv_color_t) * LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX);
+        VG_LITE_COND_STOP(LV_ATTRIBUTE_MEM_ALIGN_SIZE % (sizeof(lv_color_t) * LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX),
+                          "Complex case: need gcd function.");
+        alignedAreaStartPy = area->y1 - (area->y1 % LineToAlignMem);
+        VG_LITE_COND_STOP(alignedAreaStartPy < 0, "Negative Y alignment.");
+    }
+
+    area->y1 -= alignedAreaStartPy;
+    area->y2 -= alignedAreaStartPy;
+    *buf += (uint32_t)alignedAreaStartPy * stridePx;
+}
+#endif /*VG_LITE_BLIT_SPLIT_ENABLED*/
+
+#endif /*LV_USE_GPU_NXP_VG_LITE*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/vglite/lv_draw_vglite_blend.h

@@ -0,0 +1,149 @@
+/**
+ * @file lv_draw_vglite_blend.h
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2020-2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef LV_DRAW_VGLITE_BLEND_H
+#define LV_DRAW_VGLITE_BLEND_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../../lv_conf_internal.h"
+
+#if LV_USE_GPU_NXP_VG_LITE
+#include "lv_gpu_nxp_vglite.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+#ifndef LV_GPU_NXP_VG_LITE_FILL_SIZE_LIMIT
+/** Minimum area (in pixels) to be filled by VG-Lite with 100% opacity*/
+#define LV_GPU_NXP_VG_LITE_FILL_SIZE_LIMIT 5000
+#endif
+
+#ifndef LV_GPU_NXP_VG_LITE_FILL_OPA_SIZE_LIMIT
+/** Minimum area (in pixels) to be filled by VG-Lite with transparency*/
+#define LV_GPU_NXP_VG_LITE_FILL_OPA_SIZE_LIMIT 5000
+#endif
+
+#ifndef LV_GPU_NXP_VG_LITE_BLIT_SIZE_LIMIT
+/** Minimum area (in pixels) for image copy with 100% opacity to be handled by VG-Lite*/
+#define LV_GPU_NXP_VG_LITE_BLIT_SIZE_LIMIT 5000
+#endif
+
+#ifndef LV_GPU_NXP_VG_LITE_BUFF_SYNC_BLIT_SIZE_LIMIT
+/** Minimum invalidated area (in pixels) to be synchronized by VG-Lite during buffer sync */
+#define LV_GPU_NXP_VG_LITE_BUFF_SYNC_BLIT_SIZE_LIMIT 5000
+#endif
+
+#ifndef LV_GPU_NXP_VG_LITE_BLIT_OPA_SIZE_LIMIT
+/** Minimum area (in pixels) for image copy with transparency to be handled by VG-Lite*/
+#define LV_GPU_NXP_VG_LITE_BLIT_OPA_SIZE_LIMIT 5000
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**
+ * BLock Image Transfer descriptor structure
+ */
+typedef struct {
+
+    const lv_color_t * src;  /**< Source buffer pointer (must be aligned on 32 bytes)*/
+    lv_area_t src_area;      /**< Area to be copied from source*/
+    lv_coord_t src_width;    /**< Source buffer width*/
+    lv_coord_t src_height;   /**< Source buffer height*/
+    int32_t src_stride;      /**< Source buffer stride in bytes (must be aligned on 16 px)*/
+
+    const lv_color_t * dst;  /**< Destination buffer pointer (must be aligned on 32 bytes)*/
+    lv_area_t dst_area;      /**< Target area in destination buffer (must be the same as src_area)*/
+    lv_coord_t dst_width;    /**< Destination buffer width*/
+    lv_coord_t dst_height;   /**< Destination buffer height*/
+    int32_t dst_stride;      /**< Destination buffer stride in bytes (must be aligned on 16 px)*/
+
+    lv_opa_t opa;            /**< Opacity - alpha mix (0 = source not copied, 255 = 100% opaque)*/
+    uint32_t angle;          /**< Rotation angle (1/10 of degree)*/
+    uint32_t zoom;           /**< 256 = no zoom (1:1 scale ratio)*/
+    lv_point_t pivot;        /**< The coordinates of rotation pivot in source image buffer*/
+} lv_gpu_nxp_vglite_blit_info_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Fill area, with optional opacity.
+ *
+ * @param[in/out] dest_buf Destination buffer pointer (must be aligned on 32 bytes)
+ * @param[in] dest_width Destination buffer width in pixels (must be aligned on 16 px)
+ * @param[in] dest_height Destination buffer height in pixels
+ * @param[in] fill_area Area to be filled
+ * @param[in] color Fill color
+ * @param[in] opa Opacity (255 = full, 128 = 50% background/50% color, 0 = no fill)
+ * @retval LV_RES_OK Fill completed
+ * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_VG_LITE_LOG_ERRORS)
+ */
+lv_res_t lv_gpu_nxp_vglite_fill(lv_color_t * dest_buf, lv_coord_t dest_width, lv_coord_t dest_height,
+                                const lv_area_t * fill_area, lv_color_t color, lv_opa_t opa);
+
+/**
+ * BLock Image Transfer.
+ *
+ * @param[in] blit Description of the transfer
+ * @retval LV_RES_OK Transfer complete
+ * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_VG_LITE_LOG_ERRORS)
+ */
+lv_res_t lv_gpu_nxp_vglite_blit(lv_gpu_nxp_vglite_blit_info_t * blit);
+
+/**
+ * BLock Image Transfer with transformation.
+ *
+ * @param[in] blit Description of the transfer
+ * @retval LV_RES_OK Transfer complete
+ * @retval LV_RES_INV Error occurred (\see LV_GPU_NXP_VG_LITE_LOG_ERRORS)
+ */
+lv_res_t lv_gpu_nxp_vglite_blit_transform(lv_gpu_nxp_vglite_blit_info_t * blit);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_GPU_NXP_VG_LITE*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_VGLITE_BLEND_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/vglite/lv_draw_vglite_rect.c

@@ -0,0 +1,244 @@
+/**
+ * @file lv_draw_vglite_rect.c
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2021, 2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "lv_draw_vglite_rect.h"
+
+#if LV_USE_GPU_NXP_VG_LITE
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_res_t lv_gpu_nxp_vglite_draw_bg(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
+{
+    vg_lite_buffer_t vgbuf;
+    vg_lite_error_t err = VG_LITE_SUCCESS;
+    lv_coord_t dest_width = lv_area_get_width(draw_ctx->buf_area);
+    lv_coord_t dest_height = lv_area_get_height(draw_ctx->buf_area);
+    vg_lite_path_t path;
+    vg_lite_color_t vgcol; /* vglite takes ABGR */
+    vg_lite_matrix_t matrix;
+    lv_coord_t width = lv_area_get_width(coords);
+    lv_coord_t height = lv_area_get_height(coords);
+    vg_lite_linear_gradient_t gradient;
+    vg_lite_matrix_t * grad_matrix;
+
+    if(dsc->radius < 0)
+        return LV_RES_INV;
+
+    /* Make areas relative to draw buffer */
+    lv_area_t rel_coords;
+    lv_area_copy(&rel_coords, coords);
+    lv_area_move(&rel_coords, -draw_ctx->buf_area->x1, -draw_ctx->buf_area->y1);
+
+    lv_area_t rel_clip;
+    lv_area_copy(&rel_clip, draw_ctx->clip_area);
+    lv_area_move(&rel_clip, -draw_ctx->buf_area->x1, -draw_ctx->buf_area->y1);
+
+    /*** Init destination buffer ***/
+    if(lv_vglite_init_buf(&vgbuf, (uint32_t)dest_width, (uint32_t)dest_height, (uint32_t)dest_width * sizeof(lv_color_t),
+                          (const lv_color_t *)draw_ctx->buf, false) != LV_RES_OK)
+        VG_LITE_RETURN_INV("Init buffer failed.");
+
+    /*** Init path ***/
+    int32_t rad = dsc->radius;
+    if(dsc->radius == LV_RADIUS_CIRCLE) {
+        rad = (width > height) ? height / 2 : width / 2;
+    }
+
+    if((dsc->radius == LV_RADIUS_CIRCLE) && (width == height)) {
+        float tang = ((float)rad * BEZIER_OPTIM_CIRCLE);
+        int32_t cpoff = (int32_t)tang;
+        int32_t circle_path[] = { /*VG circle path*/
+            VLC_OP_MOVE, rel_coords.x1 + rad,  rel_coords.y1,
+            VLC_OP_CUBIC_REL, cpoff, 0, rad, rad - cpoff, rad, rad, /* top-right */
+            VLC_OP_CUBIC_REL, 0, cpoff, cpoff - rad, rad, 0 - rad, rad, /* bottom-right */
+            VLC_OP_CUBIC_REL, 0 - cpoff, 0, 0 - rad, cpoff - rad, 0 - rad, 0 - rad, /* bottom-left */
+            VLC_OP_CUBIC_REL, 0, 0 - cpoff, rad - cpoff, 0 - rad, rad, 0 - rad, /* top-left */
+            VLC_OP_END
+        };
+        err = vg_lite_init_path(&path, VG_LITE_S32, VG_LITE_HIGH, sizeof(circle_path), circle_path,
+                                (vg_lite_float_t) rel_clip.x1, (vg_lite_float_t) rel_clip.y1,
+                                ((vg_lite_float_t) rel_clip.x2) + 1.0f, ((vg_lite_float_t) rel_clip.y2) + 1.0f);
+    }
+    else if(dsc->radius > 0) {
+        float tang = ((float)rad * BEZIER_OPTIM_CIRCLE);
+        int32_t cpoff = (int32_t)tang;
+        int32_t rounded_path[] = { /*VG rounded rectangular path*/
+            VLC_OP_MOVE, rel_coords.x1 + rad,  rel_coords.y1,
+            VLC_OP_LINE, rel_coords.x2 - rad + 1,  rel_coords.y1, /* top */
+            VLC_OP_CUBIC_REL, cpoff, 0, rad, rad - cpoff, rad, rad, /* top-right */
+            VLC_OP_LINE, rel_coords.x2 + 1,  rel_coords.y2 - rad + 1, /* right */
+            VLC_OP_CUBIC_REL, 0, cpoff, cpoff - rad, rad, 0 - rad, rad, /* bottom-right */
+            VLC_OP_LINE, rel_coords.x1 + rad,  rel_coords.y2 + 1, /* bottom */
+            VLC_OP_CUBIC_REL, 0 - cpoff, 0, 0 - rad, cpoff - rad, 0 - rad, 0 - rad, /* bottom-left */
+            VLC_OP_LINE, rel_coords.x1,  rel_coords.y1 + rad, /* left */
+            VLC_OP_CUBIC_REL, 0, 0 - cpoff, rad - cpoff, 0 - rad, rad, 0 - rad, /* top-left */
+            VLC_OP_END
+        };
+        err = vg_lite_init_path(&path, VG_LITE_S32, VG_LITE_HIGH, sizeof(rounded_path), rounded_path,
+                                (vg_lite_float_t) rel_clip.x1, (vg_lite_float_t) rel_clip.y1,
+                                ((vg_lite_float_t) rel_clip.x2) + 1.0f, ((vg_lite_float_t) rel_clip.y2) + 1.0f);
+    }
+    else {
+        int32_t rect_path[] = { /*VG rectangular path*/
+            VLC_OP_MOVE, rel_coords.x1,  rel_coords.y1,
+            VLC_OP_LINE, rel_coords.x2 + 1,  rel_coords.y1,
+            VLC_OP_LINE, rel_coords.x2 + 1,  rel_coords.y2 + 1,
+            VLC_OP_LINE, rel_coords.x1,  rel_coords.y2 + 1,
+            VLC_OP_LINE, rel_coords.x1,  rel_coords.y1,
+            VLC_OP_END
+        };
+        err = vg_lite_init_path(&path, VG_LITE_S32, VG_LITE_LOW, sizeof(rect_path), rect_path,
+                                (vg_lite_float_t) rel_clip.x1, (vg_lite_float_t) rel_clip.y1,
+                                ((vg_lite_float_t) rel_clip.x2) + 1.0f, ((vg_lite_float_t) rel_clip.y2) + 1.0f);
+    }
+
+    VG_LITE_ERR_RETURN_INV(err, "Init path failed.");
+    vg_lite_identity(&matrix);
+
+    /*** Init Color/Gradient ***/
+    if(dsc->bg_grad.dir != (lv_grad_dir_t)LV_GRAD_DIR_NONE) {
+        uint32_t colors[2];
+        uint32_t stops[2];
+        lv_color32_t col32[2];
+
+        /* Gradient setup */
+        uint8_t cnt = MAX(dsc->bg_grad.stops_count, 2);
+        for(uint8_t i = 0; i < cnt; i++) {
+            col32[i].full = lv_color_to32(dsc->bg_grad.stops[i].color); /*Convert color to RGBA8888*/
+            stops[i] = dsc->bg_grad.stops[i].frac;
+#if LV_COLOR_DEPTH==16
+            colors[i] = ((uint32_t)col32[i].ch.alpha << 24) | ((uint32_t)col32[i].ch.blue << 16) |
+                        ((uint32_t)col32[i].ch.green << 8) | (uint32_t)col32[i].ch.red;
+#else /*LV_COLOR_DEPTH==32*/
+            /* watchout: red and blue color components are inverted versus vg_lite_color_t order */
+            colors[i] = ((uint32_t)col32[i].ch.alpha << 24) | ((uint32_t)col32[i].ch.red << 16) |
+                        ((uint32_t)col32[i].ch.green << 8) | (uint32_t)col32[i].ch.blue;
+#endif
+        }
+
+        lv_memset_00(&gradient, sizeof(vg_lite_linear_gradient_t));
+
+        err = vg_lite_init_grad(&gradient);
+        VG_LITE_ERR_RETURN_INV(err, "Init gradient failed");
+
+        err = vg_lite_set_grad(&gradient, cnt, colors, stops);
+        VG_LITE_ERR_RETURN_INV(err, "Set gradient failed.");
+
+        err = vg_lite_update_grad(&gradient);
+        VG_LITE_ERR_RETURN_INV(err, "Update gradient failed.");
+
+        grad_matrix = vg_lite_get_grad_matrix(&gradient);
+        vg_lite_identity(grad_matrix);
+        vg_lite_translate((float)rel_coords.x1, (float)rel_coords.y1, grad_matrix);
+
+        if(dsc->bg_grad.dir == (lv_grad_dir_t)LV_GRAD_DIR_VER) {
+            vg_lite_scale(1.0f, (float)height / 256.0f, grad_matrix);
+            vg_lite_rotate(90.0f, grad_matrix);
+        }
+        else {   /*LV_GRAD_DIR_HOR*/
+            vg_lite_scale((float)width / 256.0f, 1.0f, grad_matrix);
+        }
+    }
+
+    lv_opa_t bg_opa = dsc->bg_opa;
+    lv_color32_t bg_col32 = {.full = lv_color_to32(dsc->bg_color)}; /*Convert color to RGBA8888*/
+    if(bg_opa <= (lv_opa_t)LV_OPA_MAX) {
+        /* Only pre-multiply color if hardware pre-multiplication is not present */
+        if(!vg_lite_query_feature(gcFEATURE_BIT_VG_PE_PREMULTIPLY)) {
+            bg_col32.ch.red = (uint8_t)(((uint16_t)bg_col32.ch.red * bg_opa) >> 8);
+            bg_col32.ch.green = (uint8_t)(((uint16_t)bg_col32.ch.green * bg_opa) >> 8);
+            bg_col32.ch.blue = (uint8_t)(((uint16_t)bg_col32.ch.blue * bg_opa) >> 8);
+        }
+        bg_col32.ch.alpha = bg_opa;
+    }
+
+#if LV_COLOR_DEPTH==16
+    vgcol = bg_col32.full;
+#else /*LV_COLOR_DEPTH==32*/
+    vgcol = ((uint32_t)bg_col32.ch.alpha << 24) | ((uint32_t)bg_col32.ch.blue << 16) |
+            ((uint32_t)bg_col32.ch.green << 8) | (uint32_t)bg_col32.ch.red;
+#endif
+
+    /*Clean & invalidate cache*/
+    lv_vglite_invalidate_cache();
+
+    /*** Draw rectangle ***/
+    if(dsc->bg_grad.dir == (lv_grad_dir_t)LV_GRAD_DIR_NONE) {
+        err = vg_lite_draw(&vgbuf, &path, VG_LITE_FILL_EVEN_ODD, &matrix, VG_LITE_BLEND_SRC_OVER, vgcol);
+    }
+    else {
+        err = vg_lite_draw_gradient(&vgbuf, &path, VG_LITE_FILL_EVEN_ODD, &matrix, &gradient, VG_LITE_BLEND_SRC_OVER);
+    }
+    VG_LITE_ERR_RETURN_INV(err, "Draw gradient failed.");
+
+    err = vg_lite_finish();
+    VG_LITE_ERR_RETURN_INV(err, "Finish failed.");
+
+    err = vg_lite_clear_path(&path);
+    VG_LITE_ERR_RETURN_INV(err, "Clear path failed.");
+
+    if(dsc->bg_grad.dir != (lv_grad_dir_t)LV_GRAD_DIR_NONE) {
+        err = vg_lite_clear_grad(&gradient);
+        VG_LITE_ERR_RETURN_INV(err, "Clear gradient failed.");
+    }
+
+    return LV_RES_OK;
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#endif /*LV_USE_GPU_NXP_VG_LITE*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/vglite/lv_draw_vglite_rect.h

@@ -0,0 +1,77 @@
+/**
+ * @file lv_draw_vglite_rect.h
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2021, 2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef LV_DRAW_VGLITE_RECT_H
+#define LV_DRAW_VGLITE_RECT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../../lv_conf_internal.h"
+
+#if LV_USE_GPU_NXP_VG_LITE
+#include "lv_gpu_nxp_vglite.h"
+#include "../../lv_draw_rect.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Draw rectangle shape with effects (rounded corners, gradient)
+ *
+ * @param draw_ctx drawing context
+ * @param dsc description of the rectangle
+ * @param coords the area where rectangle is clipped
+ */
+lv_res_t lv_gpu_nxp_vglite_draw_bg(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_GPU_NXP_VG_LITE*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_VGLITE_RECT_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/vglite/lv_gpu_nxp_vglite.c

@@ -0,0 +1,153 @@
+/**
+ * @file lv_gpu_nxp_vglite.c
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2020-2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "lv_gpu_nxp_vglite.h"
+
+#if LV_USE_GPU_NXP_VG_LITE
+#include "../../../core/lv_refr.h"
+#if BLIT_DBG_AREAS
+    #include "lv_draw_vglite_blend.h"
+#endif
+
+/*********************
+ *      DEFINES
+ *********************/
+
+#if LV_COLOR_DEPTH==16
+    #define VG_LITE_PX_FMT VG_LITE_RGB565
+#elif LV_COLOR_DEPTH==32
+    #define VG_LITE_PX_FMT VG_LITE_BGRA8888
+#else
+    #error Only 16bit and 32bit color depth are supported. Set LV_COLOR_DEPTH to 16 or 32.
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_res_t lv_vglite_init_buf(vg_lite_buffer_t * vgbuf, uint32_t width, uint32_t height, uint32_t stride,
+                            const lv_color_t * ptr, bool source)
+{
+    /*Test for memory alignment*/
+    if((((uintptr_t)ptr) % (uintptr_t)LV_ATTRIBUTE_MEM_ALIGN_SIZE) != (uintptr_t)0x0U)
+        VG_LITE_RETURN_INV("%s buffer (0x%x) not aligned to %d.", source ? "Src" : "Dest",
+                           (size_t) ptr, LV_ATTRIBUTE_MEM_ALIGN_SIZE);
+
+    /*Test for stride alignment*/
+    if(source && (stride % (LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX * sizeof(lv_color_t))) != 0x0U)
+        VG_LITE_RETURN_INV("Src buffer stride (%d bytes) not aligned to %d bytes.", stride,
+                           LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX * sizeof(lv_color_t));
+
+    vgbuf->format = VG_LITE_PX_FMT;
+    vgbuf->tiled = VG_LITE_LINEAR;
+    vgbuf->image_mode = VG_LITE_NORMAL_IMAGE_MODE;
+    vgbuf->transparency_mode = VG_LITE_IMAGE_OPAQUE;
+
+    vgbuf->width = (int32_t)width;
+    vgbuf->height = (int32_t)height;
+    vgbuf->stride = (int32_t)stride;
+
+    lv_memset_00(&vgbuf->yuv, sizeof(vgbuf->yuv));
+
+    vgbuf->memory = (void *)ptr;
+    vgbuf->address = (uint32_t)vgbuf->memory;
+    vgbuf->handle = NULL;
+
+    return LV_RES_OK;
+}
+
+#if BLIT_DBG_AREAS
+void lv_vglite_dbg_draw_rectangle(lv_color_t * dest_buf, lv_coord_t dest_width, lv_coord_t dest_height,
+                                  lv_area_t * fill_area, lv_color_t color)
+{
+    lv_area_t a;
+
+    /* top line */
+    a.x1 = fill_area->x1;
+    a.x2 = fill_area->x2;
+    a.y1 = fill_area->y1;
+    a.y2 = fill_area->y1;
+    lv_gpu_nxp_vglite_fill(dest_buf, dest_width, dest_height, &a, color, LV_OPA_COVER);
+
+
+    /* bottom line */
+    a.x1 = fill_area->x1;
+    a.x2 = fill_area->x2;
+    a.y1 = fill_area->y2;
+    a.y2 = fill_area->y2;
+    lv_gpu_nxp_vglite_fill(dest_buf, dest_width, dest_height, &a, color, LV_OPA_COVER);
+
+    /* left line */
+    a.x1 = fill_area->x1;
+    a.x2 = fill_area->x1;
+    a.y1 = fill_area->y1;
+    a.y2 = fill_area->y2;
+    lv_gpu_nxp_vglite_fill(dest_buf, dest_width, dest_height, &a, color, LV_OPA_COVER);
+
+    /* right line */
+    a.x1 = fill_area->x2;
+    a.x2 = fill_area->x2;
+    a.y1 = fill_area->y1;
+    a.y2 = fill_area->y2;
+    lv_gpu_nxp_vglite_fill(dest_buf, dest_width, dest_height, &a, color, LV_OPA_COVER);
+}
+#endif /* BLIT_DBG_AREAS */
+
+void lv_vglite_invalidate_cache(void)
+{
+    lv_disp_t * disp = _lv_refr_get_disp_refreshing();
+    if(disp->driver->clean_dcache_cb)
+        disp->driver->clean_dcache_cb(disp->driver);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#endif /*LV_USE_GPU_NXP_VG_LITE*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/nxp/vglite/lv_gpu_nxp_vglite.h

@@ -0,0 +1,185 @@
+/**
+ * @file lv_gpu_nxp_vglite.h
+ *
+ */
+
+/**
+ * MIT License
+ *
+ * Copyright 2020-2022 NXP
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next paragraph)
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef LV_GPU_NXP_VGLITE_H
+#define LV_GPU_NXP_VGLITE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../../lv_conf_internal.h"
+
+#if LV_USE_GPU_NXP_VG_LITE
+#include "vg_lite.h"
+#include "../../sw/lv_draw_sw.h"
+#include "../../../misc/lv_log.h"
+#include "fsl_debug_console.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/** Use this symbol as limit to disable feature (value has to be larger than supported resolution) */
+#define LV_GPU_NXP_VG_LITE_FEATURE_DISABLED (1920*1080+1)
+
+/** Stride in px required by VG-Lite HW. Don't change this. */
+#define LV_GPU_NXP_VG_LITE_STRIDE_ALIGN_PX 16U
+
+#ifndef LV_GPU_NXP_VG_LITE_LOG_ERRORS
+/** Enable logging of VG-Lite errors (\see LV_LOG_ERROR)*/
+#define LV_GPU_NXP_VG_LITE_LOG_ERRORS 1
+#endif
+
+#ifndef LV_GPU_NXP_VG_LITE_LOG_TRACES
+/** Enable logging of VG-Lite errors (\see LV_LOG_ERROR)*/
+#define LV_GPU_NXP_VG_LITE_LOG_TRACES 0
+#endif
+
+/* Draw rectangles around BLIT tiles */
+#define BLIT_DBG_AREAS   0
+
+/* Print detailed info to SDK console (NOT to LVGL log system) */
+#define BLIT_DBG_VERBOSE 0
+
+/* Verbose debug print */
+#if BLIT_DBG_VERBOSE
+#define PRINT_BLT PRINTF
+#else
+#define PRINT_BLT(...)
+#endif
+
+/* The optimal Bezier control point offset for radial unit
+ * see: https://spencermortensen.com/articles/bezier-circle/
+ **/
+#define BEZIER_OPTIM_CIRCLE 0.551915024494f
+
+/* Draw lines for control points of Bezier curves */
+#define BEZIER_DBG_CONTROL_POINTS   0
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Fills vg_lite_buffer_t structure according given parameters.
+ *
+ * @param[in/out] vgbuf Buffer structure to be filled
+ * @param[in] width Width of buffer in pixels
+ * @param[in] height Height of buffer in pixels
+ * @param[in] stride Stride of the buffer in bytes
+ * @param[in] ptr Pointer to the buffer (must be aligned according VG-Lite requirements)
+ * @param[in] source Boolean to check if this is a source buffer
+ */
+lv_res_t lv_vglite_init_buf(vg_lite_buffer_t * vgbuf, uint32_t width, uint32_t height, uint32_t stride,
+                            const lv_color_t * ptr, bool source);
+
+#if BLIT_DBG_AREAS
+/**
+ * Draw a simple rectangle, 1 px line width.
+ *
+ * @param dest_buf Destination buffer
+ * @param dest_width Destination buffer width (must be aligned on 16px)
+ * @param dest_height Destination buffer height
+ * @param fill_area Rectangle coordinates
+ * @param color Rectangle color
+ */
+void lv_vglite_dbg_draw_rectangle(lv_color_t * dest_buf, lv_coord_t dest_width, lv_coord_t dest_height,
+                                  lv_area_t * fill_area, lv_color_t color);
+#endif
+
+/**
+ * Clean & invalidate cache.
+ */
+void lv_vglite_invalidate_cache(void);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#define VG_LITE_COND_STOP(cond, txt)          \
+    do {                                      \
+        if (cond) {                           \
+            LV_LOG_ERROR("%s. STOP!", txt);   \
+            for ( ; ; );                      \
+        }                                     \
+    } while(0)
+
+#if LV_GPU_NXP_VG_LITE_LOG_ERRORS
+#define VG_LITE_ERR_RETURN_INV(err, fmt, ...) \
+    do {                                      \
+        if(err != VG_LITE_SUCCESS) {          \
+            LV_LOG_ERROR(fmt, ##__VA_ARGS__); \
+            return LV_RES_INV;                \
+        }                                     \
+    } while (0)
+#else
+#define VG_LITE_ERR_RETURN_INV(err, fmt, ...) \
+    do {                                      \
+        if(err != VG_LITE_SUCCESS) {          \
+            return LV_RES_INV;                \
+        }                                     \
+    }while(0)
+#endif /*LV_GPU_NXP_VG_LITE_LOG_ERRORS*/
+
+#if LV_GPU_NXP_VG_LITE_LOG_TRACES
+#define VG_LITE_LOG_TRACE(fmt, ...)           \
+    do {                                      \
+        LV_LOG_ERROR(fmt, ##__VA_ARGS__);     \
+    } while (0)
+
+#define VG_LITE_RETURN_INV(fmt, ...)          \
+    do {                                      \
+        LV_LOG_ERROR(fmt, ##__VA_ARGS__);     \
+        return LV_RES_INV;                    \
+    } while (0)
+#else
+#define VG_LITE_LOG_TRACE(fmt, ...)           \
+    do {                                      \
+    } while (0)
+#define VG_LITE_RETURN_INV(fmt, ...)          \
+    do {                                      \
+        return LV_RES_INV;                    \
+    }while(0)
+#endif /*LV_GPU_NXP_VG_LITE_LOG_TRACES*/
+
+#endif /*LV_USE_GPU_NXP_VG_LITE*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_GPU_NXP_VGLITE_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/README.md

@@ -0,0 +1,28 @@
+# SDL_Renderer Based Drawing Functions
+
+In LVGL, drawing was performed by CPU. To improve drawing performance on platforms with GPU,
+we should perform drawing operations on GPU if possible.
+
+This implementation has moved most bitmap blending and drawing procedures to utilize SDL_Renderer,
+which takes advantages of hardware acceleration APIs like DirectX or OpenGL.
+
+This implementation can be also considered as a reference implementation, for contributors wants to
+develop accelerated drawing functions with other APIs such as OpenGL/OpenGL ES.
+
+## Caveats
+`lv_draw_arc`, `lv_draw_line` is not enabled, due to incomplete implementation. So lines and arcs will
+have significant impact to drawing performances.
+
+Performance of this implementation still has room to improve. Or we should use more powerful APIs
+such as OpenGL.
+
+## Notices for files
+
+### `lv_draw_sdl_stack_blur.c`
+
+Contains modified code from [android-stackblur](https://github.com/kikoso/android-stackblur) project.
+Apache License 2.0
+
+### `lv_draw_sdl_lru.c`/`lv_draw_sdl_lru.h`
+
+Contains modified code from [C-LRU-Cache](https://github.com/willcannings/C-LRU-Cache) project. No license defined.

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl.c

@@ -0,0 +1,103 @@
+/**
+ * @file lv_draw_sdl.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "lv_draw_sdl.h"
+#include "lv_draw_sdl_utils.h"
+#include "lv_draw_sdl_texture_cache.h"
+#include "lv_draw_sdl_layer.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+void lv_draw_sdl_draw_rect(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
+
+lv_res_t lv_draw_sdl_img_core(lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * draw_dsc,
+                              const lv_area_t * coords, const void * src);
+
+void lv_draw_sdl_draw_letter(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,  const lv_point_t * pos_p,
+                             uint32_t letter);
+
+void lv_draw_sdl_draw_line(lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc, const lv_point_t * point1,
+                           const lv_point_t * point2);
+
+void lv_draw_sdl_draw_arc(lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center,
+                          uint16_t radius, uint16_t start_angle, uint16_t end_angle);
+
+void lv_draw_sdl_polygon(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc, const lv_point_t * points,
+                         uint16_t point_cnt);
+
+void lv_draw_sdl_draw_bg(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_sdl_init_ctx(lv_disp_drv_t * disp_drv, lv_draw_ctx_t * draw_ctx)
+{
+    _lv_draw_sdl_utils_init();
+    lv_memset_00(draw_ctx, sizeof(lv_draw_sdl_ctx_t));
+    draw_ctx->draw_rect = lv_draw_sdl_draw_rect;
+    draw_ctx->draw_img = lv_draw_sdl_img_core;
+    draw_ctx->draw_letter = lv_draw_sdl_draw_letter;
+    draw_ctx->draw_line = lv_draw_sdl_draw_line;
+    draw_ctx->draw_arc = lv_draw_sdl_draw_arc;
+    draw_ctx->draw_polygon = lv_draw_sdl_polygon;
+    draw_ctx->draw_bg = lv_draw_sdl_draw_bg;
+    draw_ctx->layer_init = lv_draw_sdl_layer_init;
+    draw_ctx->layer_blend = lv_draw_sdl_layer_blend;
+    draw_ctx->layer_destroy = lv_draw_sdl_layer_destroy;
+    draw_ctx->layer_instance_size = sizeof(lv_draw_sdl_layer_ctx_t);
+    lv_draw_sdl_ctx_t * draw_ctx_sdl = (lv_draw_sdl_ctx_t *) draw_ctx;
+    draw_ctx_sdl->renderer = ((lv_draw_sdl_drv_param_t *) disp_drv->user_data)->renderer;
+    draw_ctx_sdl->internals = lv_mem_alloc(sizeof(lv_draw_sdl_context_internals_t));
+    lv_memset_00(draw_ctx_sdl->internals, sizeof(lv_draw_sdl_context_internals_t));
+    lv_draw_sdl_texture_cache_init(draw_ctx_sdl);
+}
+
+void lv_draw_sdl_deinit_ctx(lv_disp_drv_t * disp_drv, lv_draw_ctx_t * draw_ctx)
+{
+    lv_draw_sdl_ctx_t * draw_ctx_sdl = (lv_draw_sdl_ctx_t *) draw_ctx;
+    lv_draw_sdl_texture_cache_deinit(draw_ctx_sdl);
+    lv_mem_free(draw_ctx_sdl->internals);
+    _lv_draw_sdl_utils_deinit();
+}
+
+SDL_Texture * lv_draw_sdl_create_screen_texture(SDL_Renderer * renderer, lv_coord_t hor, lv_coord_t ver)
+{
+    SDL_Texture * texture = SDL_CreateTexture(renderer, LV_DRAW_SDL_TEXTURE_FORMAT, SDL_TEXTUREACCESS_TARGET, hor, ver);
+    SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
+    return texture;
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl.h

@@ -0,0 +1,96 @@
+/**
+ * @file lv_draw_sdl.h
+ *
+ */
+
+#ifndef LV_DRAW_SDL_H
+#define LV_DRAW_SDL_H
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include LV_GPU_SDL_INCLUDE_PATH
+
+#include "../lv_draw.h"
+#include "../../core/lv_disp.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+#define LV_DRAW_SDL_TEXTURE_FORMAT SDL_PIXELFORMAT_ARGB8888
+#else
+#define LV_DRAW_SDL_TEXTURE_FORMAT SDL_PIXELFORMAT_RGBA8888
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+struct lv_draw_sdl_context_internals_t;
+
+typedef struct {
+    /**
+     * Render for display driver
+     */
+    SDL_Renderer * renderer;
+    void * user_data;
+} lv_draw_sdl_drv_param_t;
+
+typedef struct {
+    lv_draw_ctx_t base_draw;
+    SDL_Renderer * renderer;
+    struct lv_draw_sdl_context_internals_t * internals;
+} lv_draw_sdl_ctx_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void lv_draw_sdl_init_ctx(lv_disp_drv_t * disp_drv, lv_draw_ctx_t * draw_ctx);
+
+/**
+ * @brief Free caches
+ *
+ */
+void lv_draw_sdl_deinit_ctx(lv_disp_drv_t * disp_drv, lv_draw_ctx_t * draw_ctx);
+
+SDL_Texture * lv_draw_sdl_create_screen_texture(SDL_Renderer * renderer, lv_coord_t hor, lv_coord_t ver);
+
+/*======================
+ * Add/remove functions
+ *=====================*/
+
+/*=====================
+ * Setter functions
+ *====================*/
+
+/*=====================
+ * Getter functions
+ *====================*/
+
+/*=====================
+ * Other functions
+ *====================*/
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_GPU_SDL*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SDL_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl.mk

@@ -0,0 +1,19 @@
+CSRCS += lv_draw_sdl.c
+CSRCS += lv_draw_sdl_arc.c
+CSRCS += lv_draw_sdl_bg.c
+CSRCS += lv_draw_sdl_composite.c
+CSRCS += lv_draw_sdl_img.c
+CSRCS += lv_draw_sdl_label.c
+CSRCS += lv_draw_sdl_line.c
+CSRCS += lv_draw_sdl_mask.c
+CSRCS += lv_draw_sdl_polygon.c
+CSRCS += lv_draw_sdl_rect.c
+CSRCS += lv_draw_sdl_stack_blur.c
+CSRCS += lv_draw_sdl_texture_cache.c
+CSRCS += lv_draw_sdl_utils.c
+CSRCS += lv_draw_sdl_layer.c
+
+DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/sdl
+VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/sdl
+
+CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/sdl"

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_arc.c

@@ -0,0 +1,238 @@
+/**
+ * @file lv_draw_sdl_arc.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "lv_draw_sdl.h"
+#include "lv_draw_sdl_utils.h"
+#include "lv_draw_sdl_texture_cache.h"
+#include "lv_draw_sdl_composite.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+static void dump_masks(SDL_Texture * texture, const lv_area_t * coords, const int16_t * ids, int16_t ids_count,
+                       const int16_t * caps);
+
+static void get_cap_area(int16_t angle, lv_coord_t thickness, uint16_t radius, const lv_point_t * center,
+                         lv_area_t * out);
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+void lv_draw_sdl_draw_arc(lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center,
+                          uint16_t radius, uint16_t start_angle, uint16_t end_angle)
+{
+    lv_draw_sdl_ctx_t * ctx = (lv_draw_sdl_ctx_t *) draw_ctx;
+
+    lv_area_t area_out;
+    area_out.x1 = center->x - radius;
+    area_out.y1 = center->y - radius;
+    area_out.x2 = center->x + radius - 1;  /*-1 because the center already belongs to the left/bottom part*/
+    area_out.y2 = center->y + radius - 1;
+
+    lv_area_t draw_area;
+    if(!_lv_area_intersect(&draw_area, &area_out, draw_ctx->clip_area)) {
+        return;
+    }
+
+    lv_area_t area_in;
+    lv_area_copy(&area_in, &area_out);
+    area_in.x1 += dsc->width;
+    area_in.y1 += dsc->width;
+    area_in.x2 -= dsc->width;
+    area_in.y2 -= dsc->width;
+
+
+    while(start_angle >= 360) start_angle -= 360;
+    while(end_angle >= 360) end_angle -= 360;
+
+    int16_t mask_ids[3] = {LV_MASK_ID_INV, LV_MASK_ID_INV, LV_MASK_ID_INV}, mask_ids_count = 1;
+    int16_t cap_ids[2] = {LV_MASK_ID_INV, LV_MASK_ID_INV};
+
+    lv_draw_mask_radius_param_t mask_out_param;
+    lv_draw_mask_radius_init(&mask_out_param, &area_out, LV_RADIUS_CIRCLE, false);
+    mask_ids[0] = lv_draw_mask_add(&mask_out_param, NULL);
+
+    lv_draw_mask_radius_param_t mask_in_param;
+    if(lv_area_get_width(&area_in) > 0 && lv_area_get_height(&area_in) > 0) {
+        lv_draw_mask_radius_init(&mask_in_param, &area_in, LV_RADIUS_CIRCLE, true);
+        mask_ids[1] = lv_draw_mask_add(&mask_in_param, NULL);
+        mask_ids_count++;
+    }
+
+    lv_draw_mask_angle_param_t mask_angle_param;
+    if((start_angle - end_angle) % 360) {
+        lv_draw_mask_angle_init(&mask_angle_param, center->x, center->y, start_angle, end_angle);
+        mask_ids[2] = lv_draw_mask_add(&mask_angle_param, NULL);
+        mask_ids_count++;
+    }
+
+    lv_draw_mask_radius_param_t cap_start_param, cap_end_param;
+    if(mask_ids_count == 3 && dsc->rounded) {
+        lv_area_t start_area, end_area;
+        get_cap_area((int16_t) start_angle, dsc->width, radius, center, &start_area);
+        get_cap_area((int16_t) end_angle, dsc->width, radius, center, &end_area);
+        lv_draw_mask_radius_init(&cap_start_param, &start_area, dsc->width / 2, false);
+        cap_ids[0] = lv_draw_mask_add(&cap_start_param, NULL);
+        lv_draw_mask_radius_init(&cap_end_param, &end_area, dsc->width / 2, false);
+        cap_ids[1] = lv_draw_mask_add(&cap_end_param, NULL);
+    }
+
+    lv_coord_t w = lv_area_get_width(&draw_area), h = lv_area_get_height(&draw_area);
+    SDL_Texture * texture = lv_draw_sdl_composite_texture_obtain(ctx, LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_STREAM1, w, h);
+    SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
+    dump_masks(texture, &draw_area, mask_ids, mask_ids_count, cap_ids[0] != LV_MASK_ID_INV ? cap_ids : NULL);
+
+    lv_draw_mask_remove_id(mask_ids[0]);
+    lv_draw_mask_free_param(&mask_out_param);
+
+    if(mask_ids_count > 1) {
+        lv_draw_mask_remove_id(mask_ids[1]);
+        lv_draw_mask_free_param(&mask_in_param);
+    }
+
+    if(mask_ids_count > 2) {
+        lv_draw_mask_remove_id(mask_ids[2]);
+        lv_draw_mask_free_param(&mask_angle_param);
+    }
+
+    if(cap_ids[0] != LV_MASK_ID_INV) {
+        lv_draw_mask_remove_id(cap_ids[0]);
+        lv_draw_mask_remove_id(cap_ids[1]);
+        lv_draw_mask_free_param(&cap_start_param);
+        lv_draw_mask_free_param(&cap_end_param);
+    }
+
+    SDL_Rect srcrect = {0, 0, w, h}, dstrect;
+    lv_area_to_sdl_rect(&draw_area, &dstrect);
+    SDL_Color color;
+    lv_color_to_sdl_color(&dsc->color, &color);
+    SDL_SetTextureColorMod(texture, color.r, color.g, color.b);
+    SDL_SetTextureAlphaMod(texture, dsc->opa);
+    SDL_RenderCopy(ctx->renderer, texture, &srcrect, &dstrect);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void dump_masks(SDL_Texture * texture, const lv_area_t * coords, const int16_t * ids, int16_t ids_count,
+                       const int16_t * caps)
+{
+    lv_coord_t w = lv_area_get_width(coords), h = lv_area_get_height(coords);
+    SDL_assert(w > 0 && h > 0);
+    SDL_Rect rect = {0, 0, w, h};
+    uint8_t * pixels;
+    int pitch;
+    if(SDL_LockTexture(texture, &rect, (void **) &pixels, &pitch) != 0) return;
+
+    lv_opa_t * line_buf = lv_mem_buf_get(rect.w);
+    for(lv_coord_t y = 0; y < rect.h; y++) {
+        lv_memset_ff(line_buf, rect.w);
+        lv_coord_t abs_x = (lv_coord_t) coords->x1, abs_y = (lv_coord_t)(y + coords->y1), len = (lv_coord_t) rect.w;
+        lv_draw_mask_res_t res;
+        res = lv_draw_mask_apply_ids(line_buf, abs_x, abs_y, len, ids, ids_count);
+        if(res == LV_DRAW_MASK_RES_TRANSP) {
+            lv_memset_00(&pixels[y * pitch], 4 * rect.w);
+        }
+        else if(res == LV_DRAW_MASK_RES_FULL_COVER) {
+            lv_memset_ff(&pixels[y * pitch], 4 * rect.w);
+        }
+        else {
+            for(int x = 0; x < rect.w; x++) {
+                uint8_t * pixel = &pixels[y * pitch + x * 4];
+                *pixel = line_buf[x];
+                pixel[1] = pixel[2] = pixel[3] = 0xFF;
+            }
+        }
+        if(caps) {
+            for(int i = 0; i < 2; i++) {
+                lv_memset_ff(line_buf, rect.w);
+                res = lv_draw_mask_apply_ids(line_buf, abs_x, abs_y, len, &caps[i], 1);
+                if(res == LV_DRAW_MASK_RES_TRANSP) {
+                    /* Ignore */
+                }
+                else if(res == LV_DRAW_MASK_RES_FULL_COVER) {
+                    lv_memset_ff(&pixels[y * pitch], 4 * rect.w);
+                }
+                else {
+                    for(int x = 0; x < rect.w; x++) {
+                        uint8_t * pixel = &pixels[y * pitch + x * 4];
+                        uint16_t old_opa = line_buf[x] + *pixel;
+                        *pixel = LV_MIN(old_opa, 0xFF);
+                        pixel[1] = pixel[2] = pixel[3] = 0xFF;
+                    }
+                }
+            }
+        }
+    }
+    lv_mem_buf_release(line_buf);
+    SDL_UnlockTexture(texture);
+}
+
+static void get_cap_area(int16_t angle, lv_coord_t thickness, uint16_t radius, const lv_point_t * center,
+                         lv_area_t * out)
+{
+    const uint8_t ps = 8;
+    const uint8_t pa = 127;
+
+    int32_t thick_half = thickness / 2;
+    uint8_t thick_corr = (thickness & 0x01) ? 0 : 1;
+
+    int32_t cir_x;
+    int32_t cir_y;
+
+    cir_x = ((radius - thick_half) * lv_trigo_sin((int16_t)(90 - angle))) >> (LV_TRIGO_SHIFT - ps);
+    cir_y = ((radius - thick_half) * lv_trigo_sin(angle)) >> (LV_TRIGO_SHIFT - ps);
+
+    /*Actually the center of the pixel need to be calculated so apply 1/2 px offset*/
+    if(cir_x > 0) {
+        cir_x = (cir_x - pa) >> ps;
+        out->x1 = cir_x - thick_half + thick_corr;
+        out->x2 = cir_x + thick_half;
+    }
+    else {
+        cir_x = (cir_x + pa) >> ps;
+        out->x1 = cir_x - thick_half;
+        out->x2 = cir_x + thick_half - thick_corr;
+    }
+
+    if(cir_y > 0) {
+        cir_y = (cir_y - pa) >> ps;
+        out->y1 = cir_y - thick_half + thick_corr;
+        out->y2 = cir_y + thick_half;
+    }
+    else {
+        cir_y = (cir_y + pa) >> ps;
+        out->y1 = cir_y - thick_half;
+        out->y2 = cir_y + thick_half - thick_corr;
+    }
+    lv_area_move(out, center->x, center->y);
+}
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_bg.c

@@ -0,0 +1,106 @@
+/**
+ * @file lv_draw_sdl_bg.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "../lv_draw_rect.h"
+#include "../lv_draw_img.h"
+#include "../lv_draw_label.h"
+#include "../lv_draw_mask.h"
+#include "../../core/lv_refr.h"
+#include "lv_draw_sdl_utils.h"
+#include "lv_draw_sdl_texture_cache.h"
+#include "lv_draw_sdl_composite.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static void draw_bg_color(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * draw_area,
+                          const lv_draw_rect_dsc_t * dsc);
+
+static void draw_bg_img(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * draw_area,
+                        const lv_draw_rect_dsc_t * dsc);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_sdl_draw_bg(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
+{
+    const lv_area_t * clip = draw_ctx->clip_area;
+    lv_draw_sdl_ctx_t * ctx = (lv_draw_sdl_ctx_t *) draw_ctx;
+    /* Coords will be translated so coords will start at (0,0) */
+    lv_area_t t_area;
+    bool has_content = _lv_area_intersect(&t_area, coords, clip);
+
+    /* Shadows and outlines will also draw in extended area */
+    if(has_content) {
+        if(dsc->bg_img_src) {
+            draw_bg_img(ctx, coords, &t_area, dsc);
+        }
+        else {
+            draw_bg_color(ctx, coords, &t_area, dsc);
+        }
+    }
+
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void draw_bg_color(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * draw_area,
+                          const lv_draw_rect_dsc_t * dsc)
+{
+    SDL_Color bg_color;
+    lv_color_to_sdl_color(&dsc->bg_color, &bg_color);
+    SDL_SetRenderDrawBlendMode(ctx->renderer, SDL_BLENDMODE_NONE);
+    SDL_SetRenderDrawColor(ctx->renderer, bg_color.r, bg_color.g, bg_color.b, dsc->bg_opa);
+
+    SDL_Rect rect;
+    lv_area_to_sdl_rect(draw_area, &rect);
+    SDL_RenderFillRect(ctx->renderer, &rect);
+
+    SDL_SetRenderDrawBlendMode(ctx->renderer, SDL_BLENDMODE_BLEND);
+}
+
+static void draw_bg_img(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * draw_area,
+                        const lv_draw_rect_dsc_t * dsc)
+{
+    SDL_SetRenderDrawBlendMode(ctx->renderer, SDL_BLENDMODE_NONE);
+    SDL_SetRenderDrawColor(ctx->renderer, 0, 0, 0, 0);
+
+    SDL_Rect rect;
+    lv_area_to_sdl_rect(draw_area, &rect);
+    SDL_RenderFillRect(ctx->renderer, &rect);
+
+    SDL_SetRenderDrawBlendMode(ctx->renderer, SDL_BLENDMODE_BLEND);
+    lv_draw_rect((lv_draw_ctx_t *) ctx, dsc, coords);
+}
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_composite.c

@@ -0,0 +1,262 @@
+/**
+ * @file lv_draw_sdl_composite.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "../../misc/lv_gc.h"
+#include "../../core/lv_refr.h"
+#include "lv_draw_sdl_composite.h"
+#include "lv_draw_sdl_utils.h"
+#include "lv_draw_sdl_priv.h"
+#include "lv_draw_sdl_texture_cache.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    lv_sdl_cache_key_magic_t magic;
+    lv_draw_sdl_composite_texture_id_t type;
+} composite_key_t;
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static composite_key_t mask_key_create(lv_draw_sdl_composite_texture_id_t type);
+
+static lv_coord_t next_pow_of_2(lv_coord_t num);
+
+static void dump_masks(SDL_Texture * texture, const lv_area_t * coords);
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+bool lv_draw_sdl_composite_begin(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords_in, const lv_area_t * clip_in,
+                                 const lv_area_t * extension, lv_blend_mode_t blend_mode, lv_area_t * coords_out,
+                                 lv_area_t * clip_out, lv_area_t * apply_area)
+{
+    lv_area_t full_coords = *coords_in;
+
+    /* Normalize full_coords */
+    if(full_coords.x1 > full_coords.x2) {
+        lv_coord_t x2 = full_coords.x2;
+        full_coords.x2 = full_coords.x1;
+        full_coords.x1 = x2;
+    }
+    if(full_coords.y1 > full_coords.y2) {
+        lv_coord_t y2 = full_coords.y2;
+        full_coords.y2 = full_coords.y1;
+        full_coords.y1 = y2;
+    }
+
+    if(extension) {
+        full_coords.x1 -= extension->x1;
+        full_coords.x2 += extension->x2;
+        full_coords.y1 -= extension->y1;
+        full_coords.y2 += extension->y2;
+    }
+
+    if(!_lv_area_intersect(apply_area, &full_coords, clip_in)) return false;
+    bool has_mask = lv_draw_mask_is_any(apply_area);
+
+    const bool draw_mask = has_mask && LV_GPU_SDL_CUSTOM_BLEND_MODE;
+    const bool draw_blend = blend_mode != LV_BLEND_MODE_NORMAL;
+    if(draw_mask || draw_blend) {
+        lv_draw_sdl_context_internals_t * internals = ctx->internals;
+        LV_ASSERT(internals->mask == NULL && internals->composition == NULL && internals->target_backup == NULL);
+
+        lv_coord_t w = lv_area_get_width(apply_area), h = lv_area_get_height(apply_area);
+        internals->composition = lv_draw_sdl_composite_texture_obtain(ctx, LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_TARGET0, w, h);
+        /* Don't need to worry about integral overflow */
+        lv_coord_t ofs_x = (lv_coord_t) - apply_area->x1, ofs_y = (lv_coord_t) - apply_area->y1;
+        /* Offset draw area to start with (0,0) of coords */
+        lv_area_move(coords_out, ofs_x, ofs_y);
+        lv_area_move(clip_out, ofs_x, ofs_y);
+        internals->target_backup = SDL_GetRenderTarget(ctx->renderer);
+        SDL_SetRenderTarget(ctx->renderer, internals->composition);
+        SDL_SetRenderDrawColor(ctx->renderer, 255, 255, 255, 0);
+        /* SDL_RenderClear is not working properly, so we overwrite the target with solid color */
+        SDL_SetRenderDrawBlendMode(ctx->renderer, SDL_BLENDMODE_NONE);
+        SDL_RenderFillRect(ctx->renderer, NULL);
+        SDL_SetRenderDrawBlendMode(ctx->renderer, SDL_BLENDMODE_BLEND);
+#if LV_GPU_SDL_CUSTOM_BLEND_MODE
+        internals->mask = lv_draw_sdl_composite_texture_obtain(ctx, LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_STREAM0, w, h);
+        dump_masks(internals->mask, apply_area);
+#endif
+    }
+    else if(has_mask) {
+        /* Fallback mask handling. This will at least make bars looks less bad */
+        for(uint8_t i = 0; i < _LV_MASK_MAX_NUM; i++) {
+            _lv_draw_mask_common_dsc_t * comm_param = LV_GC_ROOT(_lv_draw_mask_list[i]).param;
+            if(comm_param == NULL) continue;
+            switch(comm_param->type) {
+                case LV_DRAW_MASK_TYPE_RADIUS: {
+                        const lv_draw_mask_radius_param_t * param = (const lv_draw_mask_radius_param_t *) comm_param;
+                        if(param->cfg.outer) break;
+                        _lv_area_intersect(clip_out, apply_area, &param->cfg.rect);
+                        break;
+                    }
+                default:
+                    break;
+            }
+        }
+    }
+    return has_mask;
+}
+
+void lv_draw_sdl_composite_end(lv_draw_sdl_ctx_t * ctx, const lv_area_t * apply_area, lv_blend_mode_t blend_mode)
+{
+    lv_draw_sdl_context_internals_t * internals = ctx->internals;
+    SDL_Rect src_rect = {0, 0, lv_area_get_width(apply_area), lv_area_get_height(apply_area)};
+#if LV_GPU_SDL_CUSTOM_BLEND_MODE
+    if(internals->mask) {
+        SDL_BlendMode mode = SDL_ComposeCustomBlendMode(SDL_BLENDFACTOR_ZERO, SDL_BLENDFACTOR_ONE,
+                                                        SDL_BLENDOPERATION_ADD, SDL_BLENDFACTOR_ZERO,
+                                                        SDL_BLENDFACTOR_SRC_ALPHA, SDL_BLENDOPERATION_ADD);
+        SDL_SetTextureBlendMode(internals->mask, mode);
+        SDL_RenderCopy(ctx->renderer, internals->mask, &src_rect, &src_rect);
+    }
+#endif
+
+    /* Shapes are drawn on composite layer when mask or blend mode is present */
+    if(internals->composition) {
+        SDL_Rect dst_rect;
+        lv_area_to_sdl_rect(apply_area, &dst_rect);
+
+        SDL_SetRenderTarget(ctx->renderer, internals->target_backup);
+        switch(blend_mode) {
+            case LV_BLEND_MODE_NORMAL:
+                SDL_SetTextureBlendMode(internals->composition, SDL_BLENDMODE_BLEND);
+                break;
+            case LV_BLEND_MODE_ADDITIVE:
+                SDL_SetTextureBlendMode(internals->composition, SDL_BLENDMODE_ADD);
+                break;
+#if LV_GPU_SDL_CUSTOM_BLEND_MODE
+            case LV_BLEND_MODE_SUBTRACTIVE: {
+                    SDL_BlendMode mode = SDL_ComposeCustomBlendMode(SDL_BLENDFACTOR_ONE, SDL_BLENDFACTOR_ONE,
+                                                                    SDL_BLENDOPERATION_SUBTRACT, SDL_BLENDFACTOR_ONE,
+                                                                    SDL_BLENDFACTOR_ONE, SDL_BLENDOPERATION_SUBTRACT);
+                    SDL_SetTextureBlendMode(internals->composition, mode);
+                    break;
+                }
+            case LV_BLEND_MODE_MULTIPLY: {
+                    SDL_BlendMode mode = SDL_ComposeCustomBlendMode(SDL_BLENDFACTOR_ZERO, SDL_BLENDFACTOR_SRC_COLOR,
+                                                                    SDL_BLENDOPERATION_ADD, SDL_BLENDFACTOR_ZERO,
+                                                                    SDL_BLENDFACTOR_DST_ALPHA, SDL_BLENDOPERATION_ADD);
+                    SDL_SetTextureBlendMode(internals->composition, mode);
+                    break;
+                }
+#endif
+            default:
+                LV_LOG_WARN("Doesn't support blend mode %d", blend_mode);
+                SDL_SetTextureBlendMode(internals->composition, SDL_BLENDMODE_BLEND);
+                /* Unsupported yet */
+                break;
+        }
+        SDL_RenderCopy(ctx->renderer, internals->composition, &src_rect, &dst_rect);
+    }
+
+    internals->mask = internals->composition = internals->target_backup = NULL;
+}
+
+SDL_Texture * lv_draw_sdl_composite_texture_obtain(lv_draw_sdl_ctx_t * ctx, lv_draw_sdl_composite_texture_id_t id,
+                                                   lv_coord_t w, lv_coord_t h)
+{
+    lv_point_t * tex_size = NULL;
+    composite_key_t mask_key = mask_key_create(id);
+    SDL_Texture * result = lv_draw_sdl_texture_cache_get_with_userdata(ctx, &mask_key, sizeof(composite_key_t), NULL,
+                                                                       (void **) &tex_size);
+    if(!result || tex_size->x < w || tex_size->y < h) {
+        lv_coord_t size = next_pow_of_2(LV_MAX(w, h));
+        int access = SDL_TEXTUREACCESS_STREAMING;
+        if(id >= LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_TRANSFORM0) {
+            access = SDL_TEXTUREACCESS_TARGET;
+        }
+        else if(id >= LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_TARGET0) {
+            access = SDL_TEXTUREACCESS_TARGET;
+        }
+        result = SDL_CreateTexture(ctx->renderer, LV_DRAW_SDL_TEXTURE_FORMAT, access, size, size);
+        tex_size = lv_mem_alloc(sizeof(lv_point_t));
+        tex_size->x = tex_size->y = size;
+        lv_draw_sdl_texture_cache_put_advanced(ctx, &mask_key, sizeof(composite_key_t), result, tex_size, lv_mem_free, 0);
+    }
+    return result;
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static composite_key_t mask_key_create(lv_draw_sdl_composite_texture_id_t type)
+{
+    composite_key_t key;
+    /* VERY IMPORTANT! Padding between members is uninitialized, so we have to wipe them manually */
+    SDL_memset(&key, 0, sizeof(key));
+    key.magic = LV_GPU_CACHE_KEY_MAGIC_MASK;
+    key.type = type;
+    return key;
+}
+
+static lv_coord_t next_pow_of_2(lv_coord_t num)
+{
+    lv_coord_t n = 128;
+    while(n < num && n < 16384) {
+        n = n << 1;
+    }
+    return n;
+}
+
+static void dump_masks(SDL_Texture * texture, const lv_area_t * coords)
+{
+    lv_coord_t w = lv_area_get_width(coords), h = lv_area_get_height(coords);
+    SDL_assert(w > 0 && h > 0);
+    SDL_Rect rect = {0, 0, w, h};
+    uint8_t * pixels;
+    int pitch;
+    if(SDL_LockTexture(texture, &rect, (void **) &pixels, &pitch) != 0) return;
+
+    lv_opa_t * line_buf = lv_mem_buf_get(rect.w);
+    for(lv_coord_t y = 0; y < rect.h; y++) {
+        lv_memset_ff(line_buf, rect.w);
+        lv_coord_t abs_x = (lv_coord_t) coords->x1, abs_y = (lv_coord_t)(y + coords->y1), len = (lv_coord_t) rect.w;
+        lv_draw_mask_res_t res;
+        res = lv_draw_mask_apply(line_buf, abs_x, abs_y, len);
+        if(res == LV_DRAW_MASK_RES_TRANSP) {
+            lv_memset_00(&pixels[y * pitch], 4 * rect.w);
+        }
+        else if(res == LV_DRAW_MASK_RES_FULL_COVER) {
+            lv_memset_ff(&pixels[y * pitch], 4 * rect.w);
+        }
+        else {
+            for(int x = 0; x < rect.w; x++) {
+                const size_t idx = y * pitch + x * 4;
+                pixels[idx] = line_buf[x];
+                pixels[idx + 1] = pixels[idx + 2] = pixels[idx + 3] = 0xFF;
+            }
+        }
+    }
+    lv_mem_buf_release(line_buf);
+    SDL_UnlockTexture(texture);
+}
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_composite.h

@@ -0,0 +1,73 @@
+/**
+ * @file lv_draw_sdl_composite.h
+ *
+ */
+
+#ifndef LV_DRAW_SDL_COMPOSITE_H
+#define LV_DRAW_SDL_COMPOSITE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../lv_conf_internal.h"
+
+#include LV_GPU_SDL_INCLUDE_PATH
+
+#include "lv_draw_sdl.h"
+#include "../../misc/lv_area.h"
+#include "../../misc/lv_color.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef enum lv_draw_sdl_composite_texture_id_t {
+    LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_STREAM0,
+    LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_STREAM1,
+    LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_TARGET0,
+    LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_TARGET1,
+    LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_TRANSFORM0,
+} lv_draw_sdl_composite_texture_id_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Begin drawing with mask. Render target will be switched to a temporary texture,
+ * and drawing coordinates may get clipped or translated
+ * @param coords_in Original coordinates
+ * @param clip_in Original clip area
+ * @param extension Useful for shadows or outlines, can be NULL
+ * @param coords_out Translated coords
+ * @param clip_out Translated clip area
+ * @param apply_area Area of actual composited texture will be drawn
+ * @return true if there are any mask needs to be drawn, false otherwise
+ */
+bool lv_draw_sdl_composite_begin(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords_in, const lv_area_t * clip_in,
+                                 const lv_area_t * extension, lv_blend_mode_t blend_mode, lv_area_t * coords_out,
+                                 lv_area_t * clip_out, lv_area_t * apply_area);
+
+void lv_draw_sdl_composite_end(lv_draw_sdl_ctx_t * ctx, const lv_area_t * apply_area, lv_blend_mode_t blend_mode);
+
+SDL_Texture * lv_draw_sdl_composite_texture_obtain(lv_draw_sdl_ctx_t * ctx, lv_draw_sdl_composite_texture_id_t id,
+                                                   lv_coord_t w, lv_coord_t h);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SDL_COMPOSITE_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_img.c

@@ -0,0 +1,467 @@
+/**
+ * @file lv_draw_sdl_img.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "../lv_draw_img.h"
+#include "../lv_img_cache.h"
+#include "../lv_draw_mask.h"
+#include "../../misc/lv_lru.h"
+#include "../../misc/lv_gc.h"
+
+#include "lv_draw_sdl_img.h"
+#include "lv_draw_sdl_utils.h"
+#include "lv_draw_sdl_texture_cache.h"
+#include "lv_draw_sdl_composite.h"
+#include "lv_draw_sdl_rect.h"
+#include "lv_draw_sdl_layer.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    lv_sdl_cache_key_magic_t magic;
+    const SDL_Texture * texture;
+    lv_coord_t w, h, radius;
+} lv_draw_img_rounded_key_t;
+
+enum {
+    ROUNDED_IMG_PART_LEFT = 0,
+    ROUNDED_IMG_PART_HCENTER = 1,
+    ROUNDED_IMG_PART_RIGHT = 2,
+    ROUNDED_IMG_PART_TOP = 3,
+    ROUNDED_IMG_PART_VCENTER = 4,
+    ROUNDED_IMG_PART_BOTTOM = 5,
+};
+
+enum {
+    ROUNDED_IMG_CORNER_TOP_LEFT = 0,
+    ROUNDED_IMG_CORNER_TOP_RIGHT = 1,
+    ROUNDED_IMG_CORNER_BOTTOM_RIGHT = 2,
+    ROUNDED_IMG_CORNER_BOTTOM_LEFT = 3,
+};
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static SDL_Texture * upload_img_texture(SDL_Renderer * renderer, lv_img_decoder_dsc_t * dsc);
+
+static SDL_Texture * upload_img_texture_fallback(SDL_Renderer * renderer, lv_img_decoder_dsc_t * dsc);
+
+static bool check_mask_simple_radius(const lv_area_t * coords, lv_coord_t * radius);
+
+static void draw_img_simple(lv_draw_sdl_ctx_t * ctx, SDL_Texture * texture, const lv_draw_sdl_img_header_t * header,
+                            const lv_draw_img_dsc_t * draw_dsc, const lv_area_t * coords, const lv_area_t * clip);
+
+static void draw_img_rounded(lv_draw_sdl_ctx_t * ctx, SDL_Texture * texture, const lv_draw_sdl_img_header_t * header,
+                             const lv_draw_img_dsc_t * draw_dsc, const lv_area_t * coords, const lv_area_t * clip,
+                             lv_coord_t radius);
+
+static SDL_Texture * img_rounded_frag_obtain(lv_draw_sdl_ctx_t * ctx, SDL_Texture * texture,
+                                             const lv_draw_sdl_img_header_t * header, int w, int h, lv_coord_t radius);
+
+static lv_draw_img_rounded_key_t rounded_key_create(const SDL_Texture * texture, lv_coord_t w, lv_coord_t h,
+                                                    lv_coord_t radius);
+
+static void calc_draw_part(SDL_Texture * texture, const lv_draw_sdl_img_header_t * header, const lv_area_t * coords,
+                           const lv_area_t * clip, SDL_Rect * clipped_src, SDL_Rect * clipped_dst);
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+
+static void apply_recolor_opa(SDL_Texture * texture, const lv_draw_img_dsc_t * draw_dsc);
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_res_t lv_draw_sdl_img_core(lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * draw_dsc,
+                              const lv_area_t * coords, const void * src)
+{
+    const lv_area_t * clip = draw_ctx->clip_area;
+    lv_draw_sdl_ctx_t * ctx = (lv_draw_sdl_ctx_t *) draw_ctx;
+
+    size_t key_size;
+    lv_draw_sdl_cache_key_head_img_t * key = lv_draw_sdl_texture_img_key_create(src, draw_dsc->frame_id, &key_size);
+    bool texture_found = false;
+    lv_draw_sdl_img_header_t * header = NULL;
+    SDL_Texture * texture = lv_draw_sdl_texture_cache_get_with_userdata(ctx, key, key_size, &texture_found,
+                                                                        (void **) &header);
+    if(!texture_found) {
+        lv_draw_sdl_img_load_texture(ctx, key, key_size, src, draw_dsc->frame_id, &texture, &header);
+    }
+    SDL_free(key);
+    if(!texture) {
+        return LV_RES_INV;
+    }
+
+    lv_area_t zoomed_cords;
+    _lv_img_buf_get_transformed_area(&zoomed_cords, lv_area_get_width(coords), lv_area_get_height(coords), 0,
+                                     draw_dsc->zoom, &draw_dsc->pivot);
+    lv_area_move(&zoomed_cords, coords->x1, coords->y1);
+
+    /* When in > 0, draw simple radius */
+    lv_coord_t radius = 0;
+    /* Coords will be translated so coords will start at (0,0) */
+    lv_area_t t_coords = zoomed_cords, t_clip = *clip, apply_area;
+
+    bool has_composite = false;
+
+    if(!check_mask_simple_radius(&t_coords, &radius)) {
+        has_composite = lv_draw_sdl_composite_begin(ctx, &zoomed_cords, clip, NULL, draw_dsc->blend_mode,
+                                                    &t_coords, &t_clip, &apply_area);
+    }
+
+    lv_draw_sdl_transform_areas_offset(ctx, has_composite, &apply_area, &t_coords, &t_clip);
+
+    SDL_Rect clip_rect, coords_rect;
+    lv_area_to_sdl_rect(&t_clip, &clip_rect);
+    lv_area_to_sdl_rect(&t_coords, &coords_rect);
+
+    SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
+
+    if(radius > 0) {
+        draw_img_rounded(ctx, texture, header, draw_dsc, &t_coords, &t_clip, radius);
+    }
+    else {
+        draw_img_simple(ctx, texture, header, draw_dsc, &t_coords, &t_clip);
+    }
+
+    lv_draw_sdl_composite_end(ctx, &apply_area, draw_dsc->blend_mode);
+
+    return LV_RES_OK;
+}
+
+static void calc_draw_part(SDL_Texture * texture, const lv_draw_sdl_img_header_t * header, const lv_area_t * coords,
+                           const lv_area_t * clip, SDL_Rect * clipped_src, SDL_Rect * clipped_dst)
+{
+    double x = 0, y = 0, w, h;
+    if(SDL_RectEmpty(&header->rect)) {
+        Uint32 format = 0;
+        int access = 0, tw, th;
+        SDL_QueryTexture(texture, &format, &access, &tw, &th);
+        w = tw;
+        h = th;
+    }
+    else {
+        x = header->rect.x;
+        y = header->rect.y;
+        w = header->rect.w;
+        h = header->rect.h;
+    }
+    if(clip) {
+        lv_area_t clipped_area;
+        _lv_area_intersect(&clipped_area, coords, clip);
+        lv_area_to_sdl_rect(&clipped_area, clipped_dst);
+    }
+    else {
+        lv_area_to_sdl_rect(coords, clipped_dst);
+    }
+    lv_coord_t coords_w = lv_area_get_width(coords), coords_h = lv_area_get_height(coords);
+    clipped_src->x = (int)(x + (clipped_dst->x - coords->x1) * w / coords_w);
+    clipped_src->y = (int)(y + (clipped_dst->y - coords->y1) * h / coords_h);
+    clipped_src->w = (int)(w - (coords_w - clipped_dst->w) * w / coords_w);
+    clipped_src->h = (int)(h - (coords_h - clipped_dst->h) * h / coords_h);
+}
+
+bool lv_draw_sdl_img_load_texture(lv_draw_sdl_ctx_t * ctx, lv_draw_sdl_cache_key_head_img_t * key, size_t key_size,
+                                  const void * src, int32_t frame_id, SDL_Texture ** texture,
+                                  lv_draw_sdl_img_header_t ** header)
+{
+    _lv_img_cache_entry_t * cdsc = _lv_img_cache_open(src, lv_color_white(), frame_id);
+    lv_draw_sdl_cache_flag_t tex_flags = 0;
+    SDL_Rect rect;
+    SDL_memset(&rect, 0, sizeof(SDL_Rect));
+    if(cdsc) {
+        lv_img_decoder_dsc_t * dsc = &cdsc->dec_dsc;
+        if(dsc->user_data && SDL_memcmp(dsc->user_data, LV_DRAW_SDL_DEC_DSC_TEXTURE_HEAD, 8) == 0) {
+            lv_draw_sdl_dec_dsc_userdata_t * ptr = (lv_draw_sdl_dec_dsc_userdata_t *) dsc->user_data;
+            *texture = ptr->texture;
+            rect = ptr->rect;
+            if(ptr->texture_managed) {
+                tex_flags |= LV_DRAW_SDL_CACHE_FLAG_MANAGED;
+            }
+            ptr->texture_referenced = true;
+        }
+        else {
+            *texture = upload_img_texture(ctx->renderer, dsc);
+        }
+#if LV_IMG_CACHE_DEF_SIZE == 0
+        lv_img_decoder_close(dsc);
+#endif
+    }
+    if(texture && cdsc) {
+        *header = SDL_malloc(sizeof(lv_draw_sdl_img_header_t));
+        SDL_memcpy(&(*header)->base, &cdsc->dec_dsc.header, sizeof(lv_img_header_t));
+        (*header)->rect = rect;
+        lv_draw_sdl_texture_cache_put_advanced(ctx, key, key_size, *texture, *header, SDL_free, tex_flags);
+    }
+    else {
+        lv_draw_sdl_texture_cache_put(ctx, key, key_size, NULL);
+        return false;
+    }
+    return true;
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static SDL_Texture * upload_img_texture(SDL_Renderer * renderer, lv_img_decoder_dsc_t * dsc)
+{
+    if(!dsc->img_data) {
+        return upload_img_texture_fallback(renderer, dsc);
+    }
+    bool chroma_keyed = dsc->header.cf == (uint32_t) LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED;
+    int h = (int) dsc->header.h;
+    int w = (int) dsc->header.w;
+    void * data = (void *) dsc->img_data;
+    Uint32 rmask = 0x00FF0000;
+    Uint32 gmask = 0x0000FF00;
+    Uint32 bmask = 0x000000FF;
+    Uint32 amask = 0xFF000000;
+    if(chroma_keyed) {
+        amask = 0x00;
+    }
+    SDL_Surface * surface = SDL_CreateRGBSurfaceFrom(data, w, h, LV_COLOR_DEPTH, w * LV_COLOR_DEPTH / 8,
+                                                     rmask, gmask, bmask, amask);
+    SDL_SetColorKey(surface, chroma_keyed, lv_color_to32(LV_COLOR_CHROMA_KEY));
+    SDL_Texture * texture = SDL_CreateTextureFromSurface(renderer, surface);
+    SDL_FreeSurface(surface);
+    return texture;
+}
+
+static SDL_Texture * upload_img_texture_fallback(SDL_Renderer * renderer, lv_img_decoder_dsc_t * dsc)
+{
+    lv_coord_t h = (lv_coord_t) dsc->header.h;
+    lv_coord_t w = (lv_coord_t) dsc->header.w;
+    uint8_t * data = lv_mem_buf_get(w * h * sizeof(lv_color_t));
+    for(lv_coord_t y = 0; y < h; y++) {
+        lv_img_decoder_read_line(dsc, 0, y, w, &data[y * w * sizeof(lv_color_t)]);
+    }
+    Uint32 rmask = 0x00FF0000;
+    Uint32 gmask = 0x0000FF00;
+    Uint32 bmask = 0x000000FF;
+    Uint32 amask = 0xFF000000;
+    SDL_Surface * surface = SDL_CreateRGBSurfaceFrom(data, w, h, LV_COLOR_DEPTH, w * LV_COLOR_DEPTH / 8,
+                                                     rmask, gmask, bmask, amask);
+    SDL_SetColorKey(surface, SDL_TRUE, lv_color_to32(LV_COLOR_CHROMA_KEY));
+    SDL_Texture * texture = SDL_CreateTextureFromSurface(renderer, surface);
+    SDL_FreeSurface(surface);
+    lv_mem_buf_release(data);
+    return texture;
+}
+
+/**
+ * Check if there is only one radius mask
+ * @param radius Set to radius value if the only mask is a radius mask
+ * @return true if the only mask is a radius mask
+ */
+static bool check_mask_simple_radius(const lv_area_t * coords, lv_coord_t * radius)
+{
+    if(lv_draw_mask_get_cnt() != 1) return false;
+    for(uint8_t i = 0; i < _LV_MASK_MAX_NUM; i++) {
+        _lv_draw_mask_common_dsc_t * param = LV_GC_ROOT(_lv_draw_mask_list[i]).param;
+        if(param->type == LV_DRAW_MASK_TYPE_RADIUS) {
+            lv_draw_mask_radius_param_t * rparam = (lv_draw_mask_radius_param_t *) param;
+            if(rparam->cfg.outer) return false;
+            if(!_lv_area_is_equal(&rparam->cfg.rect, coords)) return false;
+            *radius = rparam->cfg.radius;
+            return true;
+        }
+    }
+    return false;
+}
+
+static void draw_img_simple(lv_draw_sdl_ctx_t * ctx, SDL_Texture * texture, const lv_draw_sdl_img_header_t * header,
+                            const lv_draw_img_dsc_t * draw_dsc, const lv_area_t * coords, const lv_area_t * clip)
+{
+    apply_recolor_opa(texture, draw_dsc);
+    SDL_Point pivot = {.x = draw_dsc->pivot.x, .y = draw_dsc->pivot.y};
+
+    /*Image needs to be rotated, so we have to use clip rect which is slower*/
+    if(draw_dsc->angle != 0) {
+        /* No radius, set clip here */
+        SDL_Rect clip_rect;
+        lv_area_to_sdl_rect(clip, &clip_rect);
+        SDL_RenderSetClipRect(ctx->renderer, &clip_rect);
+    }
+    SDL_Rect src_rect, dst_rect;
+    calc_draw_part(texture, header, coords, clip, &src_rect, &dst_rect);
+    SDL_RenderCopyEx(ctx->renderer, texture, &src_rect, &dst_rect, draw_dsc->angle, &pivot, SDL_FLIP_NONE);
+    if(draw_dsc->angle != 0) {
+        SDL_RenderSetClipRect(ctx->renderer, NULL);
+    }
+}
+
+
+static void draw_img_rounded(lv_draw_sdl_ctx_t * ctx, SDL_Texture * texture, const lv_draw_sdl_img_header_t * header,
+                             const lv_draw_img_dsc_t * draw_dsc, const lv_area_t * coords, const lv_area_t * clip,
+                             lv_coord_t radius)
+{
+    const int w = lv_area_get_width(coords), h = lv_area_get_height(coords);
+    lv_coord_t real_radius = LV_MIN3(radius, w, h);
+    SDL_Texture * frag = img_rounded_frag_obtain(ctx, texture, header, w, h, real_radius);
+    apply_recolor_opa(frag, draw_dsc);
+    lv_draw_sdl_rect_bg_frag_draw_corners(ctx, frag, real_radius, coords, clip, true);
+
+    apply_recolor_opa(texture, draw_dsc);
+
+    SDL_Rect src_rect, dst_rect;
+    /* Draw 3 parts */
+    lv_area_t clip_tmp, part;
+    calc_draw_part(texture, header, coords, NULL, &src_rect, &dst_rect);
+    for(int i = w > h ? ROUNDED_IMG_PART_LEFT : ROUNDED_IMG_PART_TOP, j = i + 3; i <= j; i++) {
+        switch(i) {
+            case ROUNDED_IMG_PART_LEFT:
+                lv_area_set(&part, coords->x1, coords->y1 + radius, coords->x1 + radius - 1, coords->y2 - radius);
+                break;
+            case ROUNDED_IMG_PART_HCENTER:
+                lv_area_set(&part, coords->x1 + radius, coords->y1, coords->x2 - radius, coords->y2);
+                break;
+            case ROUNDED_IMG_PART_RIGHT:
+                lv_area_set(&part, coords->x2 - radius + 1, coords->y1 + radius, coords->x2, coords->y2 - radius);
+                break;
+            case ROUNDED_IMG_PART_TOP:
+                lv_area_set(&part, coords->x1 + radius, coords->y1, coords->x2 - radius, coords->y1 + radius - 1);
+                break;
+            case ROUNDED_IMG_PART_VCENTER:
+                lv_area_set(&part, coords->x1 + radius, coords->y2 - radius + 1, coords->x2 - radius, coords->y2);
+                break;
+            case ROUNDED_IMG_PART_BOTTOM:
+                lv_area_set(&part, coords->x1, coords->y1 + radius, coords->x2, coords->y2 - radius);
+                break;
+            default:
+                break;
+        }
+        if(!_lv_area_intersect(&clip_tmp, &part, clip)) continue;
+        SDL_Rect clip_rect;
+        lv_area_to_sdl_rect(&clip_tmp, &clip_rect);
+        SDL_RenderSetClipRect(ctx->renderer, &clip_rect);
+        SDL_RenderCopy(ctx->renderer, texture, &src_rect, &dst_rect);
+    }
+    SDL_RenderSetClipRect(ctx->renderer, NULL);
+}
+
+static void apply_recolor_opa(SDL_Texture * texture, const lv_draw_img_dsc_t * draw_dsc)
+{
+    if(draw_dsc->recolor_opa > LV_OPA_TRANSP) {
+        /* Draw with mixed recolor */
+        lv_color_t recolor = lv_color_mix(draw_dsc->recolor, lv_color_white(), draw_dsc->recolor_opa);
+        SDL_SetTextureColorMod(texture, recolor.ch.red, recolor.ch.green, recolor.ch.blue);
+    }
+    else {
+        /* Draw with no recolor */
+        SDL_SetTextureColorMod(texture, 0xFF, 0xFF, 0xFF);
+    }
+    SDL_SetTextureAlphaMod(texture, draw_dsc->opa);
+}
+
+static SDL_Texture * img_rounded_frag_obtain(lv_draw_sdl_ctx_t * ctx, SDL_Texture * texture,
+                                             const lv_draw_sdl_img_header_t * header, int w, int h, lv_coord_t radius)
+{
+    lv_draw_img_rounded_key_t key = rounded_key_create(texture, w, h, radius);
+    SDL_Texture * mask_frag = lv_draw_sdl_rect_bg_frag_obtain(ctx, radius);
+    SDL_Texture * img_frag = lv_draw_sdl_texture_cache_get(ctx, &key, sizeof(key), NULL);
+    if(img_frag == NULL) {
+        const lv_coord_t full_frag_size = radius * 2 + 3;
+        img_frag = SDL_CreateTexture(ctx->renderer, LV_DRAW_SDL_TEXTURE_FORMAT, SDL_TEXTUREACCESS_TARGET,
+                                     full_frag_size, full_frag_size);
+        SDL_SetTextureBlendMode(img_frag, SDL_BLENDMODE_BLEND);
+        SDL_Texture * old_target = SDL_GetRenderTarget(ctx->renderer);
+        SDL_SetRenderTarget(ctx->renderer, img_frag);
+        SDL_SetRenderDrawColor(ctx->renderer, 0, 0, 0, 0);
+        /* SDL_RenderClear is not working properly, so we overwrite the target with solid color */
+        SDL_SetRenderDrawBlendMode(ctx->renderer, SDL_BLENDMODE_NONE);
+        SDL_RenderFillRect(ctx->renderer, NULL);
+        SDL_SetRenderDrawBlendMode(ctx->renderer, SDL_BLENDMODE_BLEND);
+
+        lv_area_t coords = {0, 0, w - 1, h - 1}, clip;
+        lv_area_t frag_coords = {0, 0, full_frag_size - 1, full_frag_size - 1};
+        lv_draw_sdl_rect_bg_frag_draw_corners(ctx, mask_frag, radius, &frag_coords, NULL, false);
+
+        SDL_SetTextureAlphaMod(texture, 0xFF);
+        SDL_SetTextureColorMod(texture, 0xFF, 0xFF, 0xFF);
+#if LV_GPU_SDL_CUSTOM_BLEND_MODE
+        SDL_BlendMode blend_mode = SDL_ComposeCustomBlendMode(SDL_BLENDFACTOR_ONE, SDL_BLENDFACTOR_ZERO,
+                                                              SDL_BLENDOPERATION_ADD, SDL_BLENDFACTOR_DST_ALPHA,
+                                                              SDL_BLENDFACTOR_ZERO, SDL_BLENDOPERATION_ADD);
+        SDL_SetTextureBlendMode(texture, blend_mode);
+#else
+        SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_MOD);
+#endif
+        SDL_Rect srcrect, cliprect, dstrect = {0, 0, radius, radius};
+
+        cliprect.w = cliprect.h = radius;
+        for(int i = 0; i <= ROUNDED_IMG_CORNER_BOTTOM_LEFT; i++) {
+            switch(i) {
+                case ROUNDED_IMG_CORNER_TOP_LEFT:
+                    cliprect.x = 0;
+                    cliprect.y = 0;
+                    lv_area_align(&frag_coords, &coords, LV_ALIGN_TOP_LEFT, 0, 0);
+                    break;
+                case ROUNDED_IMG_CORNER_TOP_RIGHT:
+                    cliprect.x = full_frag_size - radius;
+                    cliprect.y = 0;
+                    lv_area_align(&frag_coords, &coords, LV_ALIGN_TOP_RIGHT, 0, 0);
+                    break;
+                case ROUNDED_IMG_CORNER_BOTTOM_RIGHT:
+                    cliprect.x = full_frag_size - radius;
+                    cliprect.y = full_frag_size - radius;
+                    lv_area_align(&frag_coords, &coords, LV_ALIGN_BOTTOM_RIGHT, 0, 0);
+                    break;
+                case ROUNDED_IMG_CORNER_BOTTOM_LEFT:
+                    cliprect.x = 0;
+                    cliprect.y = full_frag_size - radius;
+                    lv_area_align(&frag_coords, &coords, LV_ALIGN_BOTTOM_LEFT, 0, 0);
+                    break;
+                default:
+                    break;
+            }
+            calc_draw_part(texture, header, &coords, NULL, &srcrect, &dstrect);
+            SDL_RenderSetClipRect(ctx->renderer, &cliprect);
+            SDL_RenderCopy(ctx->renderer, texture, &srcrect, &dstrect);
+        }
+        SDL_RenderSetClipRect(ctx->renderer, NULL);
+
+        SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
+
+        SDL_SetRenderTarget(ctx->renderer, old_target);
+        lv_draw_sdl_texture_cache_put(ctx, &key, sizeof(key), img_frag);
+    }
+    return img_frag;
+}
+
+static lv_draw_img_rounded_key_t rounded_key_create(const SDL_Texture * texture, lv_coord_t w, lv_coord_t h,
+                                                    lv_coord_t radius)
+{
+    lv_draw_img_rounded_key_t key;
+    SDL_memset(&key, 0, sizeof(key));
+    key.magic = LV_GPU_CACHE_KEY_MAGIC_IMG_ROUNDED_CORNERS;
+    key.texture = texture;
+    key.w = w;
+    key.h = h;
+    key.radius = radius;
+    return key;
+}
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_img.h

@@ -0,0 +1,72 @@
+/**
+ * @file lv_draw_sdl_img.h
+ *
+ */
+
+#ifndef LV_DRAW_SDL_IMG_H
+#define LV_DRAW_SDL_IMG_H
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include LV_GPU_SDL_INCLUDE_PATH
+
+#include "../lv_draw.h"
+
+#include "lv_draw_sdl_texture_cache.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct lv_draw_sdl_img_header_t {
+    lv_img_header_t base;
+    SDL_Rect rect;
+} lv_draw_sdl_img_header_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/*======================
+ * Add/remove functions
+ *=====================*/
+
+/*=====================
+ * Setter functions
+ *====================*/
+
+/*=====================
+ * Getter functions
+ *====================*/
+
+/*=====================
+ * Other functions
+ *====================*/
+bool lv_draw_sdl_img_load_texture(lv_draw_sdl_ctx_t * ctx, lv_draw_sdl_cache_key_head_img_t * key, size_t key_size,
+                                  const void * src, int32_t frame_id, SDL_Texture ** texture,
+                                  lv_draw_sdl_img_header_t ** header);
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_GPU_SDL*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SDL_IMG_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_label.c

@@ -0,0 +1,176 @@
+/**
+ * @file lv_draw_sdl_label.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include LV_GPU_SDL_INCLUDE_PATH
+
+#include "../lv_draw_label.h"
+#include "../../misc/lv_utils.h"
+
+#include "lv_draw_sdl_utils.h"
+#include "lv_draw_sdl_texture_cache.h"
+#include "lv_draw_sdl_composite.h"
+#include "lv_draw_sdl_layer.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    lv_sdl_cache_key_magic_t magic;
+    const lv_font_t * font_p;
+    uint32_t letter;
+} lv_font_glyph_key_t;
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static lv_font_glyph_key_t font_key_glyph_create(const lv_font_t * font_p, uint32_t letter);
+
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_sdl_draw_letter(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,  const lv_point_t * pos_p,
+                             uint32_t letter)
+{
+    const lv_area_t * clip_area = draw_ctx->clip_area;
+    const lv_font_t * font_p = dsc->font;
+    lv_opa_t opa = dsc->opa;
+    lv_color_t color = dsc->color;
+    if(opa < LV_OPA_MIN) return;
+    if(opa > LV_OPA_MAX) opa = LV_OPA_COVER;
+
+    if(font_p == NULL) {
+        LV_LOG_WARN("lv_draw_letter: font is NULL");
+        return;
+    }
+
+    lv_font_glyph_dsc_t g;
+    bool g_ret = lv_font_get_glyph_dsc(font_p, &g, letter, '\0');
+    if(g_ret == false) {
+        /*Add warning if the dsc is not found
+         *but do not print warning for non printable ASCII chars (e.g. '\n')*/
+        if(letter >= 0x20 &&
+           letter != 0xf8ff && /*LV_SYMBOL_DUMMY*/
+           letter != 0x200c) { /*ZERO WIDTH NON-JOINER*/
+            LV_LOG_WARN("lv_draw_letter: glyph dsc. not found for U+%X", letter);
+
+            /* draw placeholder */
+            lv_area_t glyph_coords;
+            lv_draw_rect_dsc_t glyph_dsc;
+            lv_coord_t begin_x = pos_p->x + g.ofs_x;
+            lv_coord_t begin_y = pos_p->y + g.ofs_y;
+            lv_area_set(&glyph_coords, begin_x, begin_y, begin_x + g.box_w, begin_y + g.box_h);
+            lv_draw_rect_dsc_init(&glyph_dsc);
+            glyph_dsc.bg_opa = LV_OPA_MIN;
+            glyph_dsc.outline_opa = LV_OPA_MIN;
+            glyph_dsc.shadow_opa = LV_OPA_MIN;
+            glyph_dsc.bg_img_opa = LV_OPA_MIN;
+            glyph_dsc.border_color = dsc->color;
+            glyph_dsc.border_width = 1;
+            draw_ctx->draw_rect(draw_ctx, &glyph_dsc, &glyph_coords);
+        }
+        return;
+    }
+
+    /*Don't draw anything if the character is empty. E.g. space*/
+    if((g.box_h == 0) || (g.box_w == 0)) return;
+
+    int32_t pos_x = pos_p->x + g.ofs_x;
+    int32_t pos_y = pos_p->y + (font_p->line_height - font_p->base_line) - g.box_h - g.ofs_y;
+
+    const lv_area_t letter_area = {pos_x, pos_y, pos_x + g.box_w - 1, pos_y + g.box_h - 1};
+    lv_area_t draw_area;
+
+    /*If the letter is completely out of mask don't draw it*/
+    if(!_lv_area_intersect(&draw_area, &letter_area, clip_area)) {
+        return;
+    }
+
+    lv_draw_sdl_ctx_t * ctx = (lv_draw_sdl_ctx_t *) draw_ctx;
+    SDL_Renderer * renderer = ctx->renderer;
+
+    lv_font_glyph_key_t glyph_key = font_key_glyph_create(font_p, letter);
+    bool glyph_found = false;
+    SDL_Texture * texture = lv_draw_sdl_texture_cache_get(ctx, &glyph_key, sizeof(glyph_key), &glyph_found);
+    if(!glyph_found) {
+        if(g.resolved_font) {
+            font_p = g.resolved_font;
+        }
+        const uint8_t * bmp = lv_font_get_glyph_bitmap(font_p, letter);
+        uint8_t * buf = lv_mem_alloc(g.box_w * g.box_h);
+        lv_sdl_to_8bpp(buf, bmp, g.box_w, g.box_h, g.box_w, g.bpp);
+        SDL_Surface * mask = lv_sdl_create_opa_surface(buf, g.box_w, g.box_h, g.box_w);
+        texture = SDL_CreateTextureFromSurface(renderer, mask);
+        SDL_FreeSurface(mask);
+        lv_mem_free(buf);
+        lv_draw_sdl_texture_cache_put(ctx, &glyph_key, sizeof(glyph_key), texture);
+    }
+    if(!texture) {
+        return;
+    }
+
+    lv_area_t t_letter = letter_area, t_clip = *clip_area, apply_area;
+    bool has_composite = lv_draw_sdl_composite_begin(ctx, &letter_area, clip_area, NULL, dsc->blend_mode, &t_letter,
+                                                     &t_clip, &apply_area);
+
+    lv_draw_sdl_transform_areas_offset(ctx, has_composite, &apply_area, &t_letter, &t_clip);
+
+    /*If the letter is completely out of mask don't draw it*/
+    if(!_lv_area_intersect(&draw_area, &t_letter, &t_clip)) {
+        return;
+    }
+    SDL_Rect srcrect, dstrect;
+    lv_area_to_sdl_rect(&draw_area, &dstrect);
+    srcrect.x = draw_area.x1 - t_letter.x1;
+    srcrect.y = draw_area.y1 - t_letter.y1;
+    srcrect.w = dstrect.w;
+    srcrect.h = dstrect.h;
+    SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
+    SDL_SetTextureAlphaMod(texture, opa);
+    SDL_SetTextureColorMod(texture, color.ch.red, color.ch.green, color.ch.blue);
+    SDL_RenderCopy(renderer, texture, &srcrect, &dstrect);
+
+    lv_draw_sdl_composite_end(ctx, &apply_area, dsc->blend_mode);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static lv_font_glyph_key_t font_key_glyph_create(const lv_font_t * font_p, uint32_t letter)
+{
+    lv_font_glyph_key_t key;
+    /* VERY IMPORTANT! Padding between members is uninitialized, so we have to wipe them manually */
+    SDL_memset(&key, 0, sizeof(key));
+    key.magic = LV_GPU_CACHE_KEY_MAGIC_FONT_GLYPH;
+    key.font_p = font_p;
+    key.letter = letter;
+    return key;
+}
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_layer.c

@@ -0,0 +1,141 @@
+/**
+ * @file lv_draw_sdl_refr.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "../../core/lv_refr.h"
+
+#include "lv_draw_sdl.h"
+#include "lv_draw_sdl_priv.h"
+#include "lv_draw_sdl_composite.h"
+#include "lv_draw_sdl_utils.h"
+#include "lv_draw_sdl_layer.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_draw_layer_ctx_t * lv_draw_sdl_layer_init(lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx,
+                                             lv_draw_layer_flags_t flags)
+{
+    lv_draw_sdl_ctx_t * ctx = (lv_draw_sdl_ctx_t *) draw_ctx;
+    SDL_Renderer * renderer = ctx->renderer;
+
+    lv_draw_sdl_layer_ctx_t * transform_ctx = (lv_draw_sdl_layer_ctx_t *) layer_ctx;
+
+    transform_ctx->flags = flags;
+    transform_ctx->orig_target = SDL_GetRenderTarget(renderer);
+
+    lv_coord_t target_w = lv_area_get_width(&layer_ctx->area_full);
+    lv_coord_t target_h = lv_area_get_height(&layer_ctx->area_full);
+
+    enum lv_draw_sdl_composite_texture_id_t texture_id = LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_TRANSFORM0 +
+                                                         ctx->internals->transform_count;
+    transform_ctx->target = lv_draw_sdl_composite_texture_obtain(ctx, texture_id, target_w, target_h);
+    transform_ctx->target_rect.x = 0;
+    transform_ctx->target_rect.y = 0;
+    transform_ctx->target_rect.w = target_w;
+    transform_ctx->target_rect.h = target_h;
+
+    layer_ctx->max_row_with_alpha = target_h;
+    layer_ctx->max_row_with_no_alpha = target_h;
+
+    SDL_SetTextureBlendMode(transform_ctx->target, SDL_BLENDMODE_BLEND);
+    SDL_SetRenderTarget(renderer, transform_ctx->target);
+
+    /* SDL_RenderClear is not working properly, so we overwrite the target with solid color */
+    SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE);
+    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
+    SDL_RenderFillRect(renderer, NULL);
+    SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
+
+    /* Set proper drawing context for transform layer */
+    ctx->internals->transform_count += 1;
+    draw_ctx->buf_area = &layer_ctx->area_full;
+    draw_ctx->clip_area = &layer_ctx->area_full;
+
+    return layer_ctx;
+}
+
+void lv_draw_sdl_layer_blend(lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx,
+                             const lv_draw_img_dsc_t * draw_dsc)
+{
+    lv_draw_sdl_ctx_t * ctx = (lv_draw_sdl_ctx_t *) draw_ctx;
+    lv_draw_sdl_layer_ctx_t * transform_ctx = (lv_draw_sdl_layer_ctx_t *) layer_ctx;
+
+    SDL_Renderer * renderer = ctx->renderer;
+
+    SDL_Rect trans_rect;
+
+    if(transform_ctx->flags & LV_DRAW_LAYER_FLAG_CAN_SUBDIVIDE) {
+        lv_area_zoom_to_sdl_rect(&layer_ctx->area_act, &trans_rect, draw_dsc->zoom, &draw_dsc->pivot);
+    }
+    else {
+        lv_area_zoom_to_sdl_rect(&layer_ctx->area_full, &trans_rect, draw_dsc->zoom, &draw_dsc->pivot);
+    }
+
+    SDL_SetRenderTarget(renderer, transform_ctx->orig_target);
+
+    /*Render off-screen texture, transformed*/
+    SDL_Rect clip_rect;
+    lv_area_to_sdl_rect(layer_ctx->original.clip_area, &clip_rect);
+    SDL_Point center = {.x = draw_dsc->pivot.x, .y = draw_dsc->pivot.y};
+    SDL_RenderSetClipRect(renderer, &clip_rect);
+    SDL_SetTextureAlphaMod(transform_ctx->target, draw_dsc->opa);
+    SDL_RenderCopyEx(renderer, transform_ctx->target, &transform_ctx->target_rect, &trans_rect,
+                     draw_dsc->angle, &center, SDL_FLIP_NONE);
+    SDL_RenderSetClipRect(renderer, NULL);
+}
+
+void lv_draw_sdl_layer_destroy(lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx)
+{
+    lv_draw_sdl_ctx_t * ctx = (lv_draw_sdl_ctx_t *) draw_ctx;
+    ctx->internals->transform_count -= 1;
+}
+
+void lv_draw_sdl_transform_areas_offset(lv_draw_sdl_ctx_t * ctx, bool has_composite, lv_area_t * apply_area,
+                                        lv_area_t * coords, lv_area_t * clip)
+{
+    if(ctx->internals->transform_count == 0) {
+        return;
+    }
+    lv_area_t * area = ctx->base_draw.buf_area;
+    lv_area_move(coords, -area->x1, -area->y1);
+    lv_area_move(clip, -area->x1, -area->y1);
+    if(has_composite) {
+        lv_area_move(apply_area, -area->x1, -area->y1);
+    }
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_layer.h

@@ -0,0 +1,55 @@
+/**
+ * @file lv_draw_sdl_refr.h
+ *
+ */
+
+#ifndef LV_TEMPL_H
+#define LV_TEMPL_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_sdl.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+typedef struct _lv_draw_sdl_layer_ctx_t {
+    lv_draw_layer_ctx_t base;
+
+    SDL_Texture * orig_target;
+    SDL_Texture * target;
+    SDL_Rect target_rect;
+    lv_draw_layer_flags_t flags;
+} lv_draw_sdl_layer_ctx_t;
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+lv_draw_layer_ctx_t * lv_draw_sdl_layer_init(lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx,
+                                             lv_draw_layer_flags_t flags);
+
+void lv_draw_sdl_layer_blend(lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * transform_ctx,
+                             const lv_draw_img_dsc_t * draw_dsc);
+
+void lv_draw_sdl_layer_destroy(lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx);
+
+void lv_draw_sdl_transform_areas_offset(lv_draw_sdl_ctx_t * ctx, bool has_composite, lv_area_t * apply_area,
+                                        lv_area_t * coords, lv_area_t * clip);
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_TEMPL_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_line.c

@@ -0,0 +1,157 @@
+/**
+ * @file lv_draw_sdl_line.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "lv_draw_sdl.h"
+#include "lv_draw_sdl_utils.h"
+#include "lv_draw_sdl_texture_cache.h"
+#include "lv_draw_sdl_composite.h"
+#include "lv_draw_sdl_mask.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define ROUND_START 0x01
+#define ROUND_END 0x02
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    lv_sdl_cache_key_magic_t magic;
+    lv_coord_t length;
+    lv_coord_t width;
+    uint8_t round;
+} lv_draw_line_key_t;
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+static lv_draw_line_key_t line_key_create(const lv_draw_line_dsc_t * dsc, lv_coord_t length);
+
+static SDL_Texture * line_texture_create(lv_draw_sdl_ctx_t * sdl_ctx, const lv_draw_line_dsc_t * dsc,
+                                         lv_coord_t length);
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+void lv_draw_sdl_draw_line(lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc, const lv_point_t * point1,
+                           const lv_point_t * point2)
+{
+    lv_draw_sdl_ctx_t * sdl_ctx = (lv_draw_sdl_ctx_t *) draw_ctx;
+    SDL_Renderer * renderer = sdl_ctx->renderer;
+    lv_coord_t x1 = point1->x, x2 = point2->x, y1 = point1->y, y2 = point2->y;
+    double length = SDL_sqrt(SDL_pow(x2 - x1, 2) + SDL_pow(y2 - y1, 2));
+    if(length - (long) length > 0.5) {
+        length = (long) length + 1;
+    }
+
+    double angle = SDL_atan2(y2 - y1, x2 - x1) * 180 / M_PI;
+    lv_draw_line_key_t key = line_key_create(dsc, (lv_coord_t) length);
+    SDL_Texture * texture = lv_draw_sdl_texture_cache_get(sdl_ctx, &key, sizeof(key), NULL);
+    if(!texture) {
+        texture = line_texture_create(sdl_ctx, dsc, (lv_coord_t) length);
+        lv_draw_sdl_texture_cache_put(sdl_ctx, &key, sizeof(key), texture);
+    }
+
+    lv_area_t coords = {x1, y1, x2, y2};
+    const lv_area_t * clip = draw_ctx->clip_area;
+
+    SDL_Rect coords_r, clip_r;
+    lv_area_to_sdl_rect(&coords, &coords_r);
+    lv_area_to_sdl_rect(clip, &clip_r);
+
+    lv_area_t t_coords = coords, t_clip = *clip, apply_area;
+    lv_area_t extension = {dsc->width / 2, dsc->width / 2, dsc->width / 2, dsc->width / 2};
+    lv_draw_sdl_composite_begin(sdl_ctx, &coords, clip, &extension, dsc->blend_mode, &t_coords, &t_clip,
+                                &apply_area);
+
+    SDL_Color color;
+    lv_color_to_sdl_color(&dsc->color, &color);
+
+    SDL_SetTextureColorMod(texture, color.r, color.g, color.b);
+    SDL_SetTextureAlphaMod(texture, dsc->opa);
+    SDL_Rect srcrect = {0, 0, (int) length + dsc->width + 2, dsc->width + 2},
+             dstrect = {t_coords.x1 - 1 - dsc->width / 2, t_coords.y1 - 1, srcrect.w, srcrect.h};
+    SDL_Point center = {1 + dsc->width / 2, 1 + dsc->width / 2};
+
+    SDL_Rect clip_rect;
+    lv_area_to_sdl_rect(&t_clip, &clip_rect);
+    if(!SDL_RectEquals(&clip_rect, &dstrect) || angle != 0) {
+        SDL_RenderSetClipRect(renderer, &clip_rect);
+    }
+    SDL_RenderCopyEx(renderer, texture, &srcrect, &dstrect, angle, &center, 0);
+    SDL_RenderSetClipRect(renderer, NULL);
+
+    lv_draw_sdl_composite_end(sdl_ctx, &apply_area, dsc->blend_mode);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static lv_draw_line_key_t line_key_create(const lv_draw_line_dsc_t * dsc, lv_coord_t length)
+{
+    lv_draw_line_key_t key;
+    lv_memset_00(&key, sizeof(lv_draw_line_key_t));
+    key.magic = LV_GPU_CACHE_KEY_MAGIC_LINE;
+    key.length = length;
+    key.width = dsc->width;
+    key.round = (dsc->round_start ? ROUND_START : 0) | (dsc->round_end ? ROUND_END : 0);
+    return key;
+}
+
+static SDL_Texture * line_texture_create(lv_draw_sdl_ctx_t * sdl_ctx, const lv_draw_line_dsc_t * dsc, lv_coord_t length)
+{
+    SDL_Texture * texture = SDL_CreateTexture(sdl_ctx->renderer, LV_DRAW_SDL_TEXTURE_FORMAT, SDL_TEXTUREACCESS_TARGET,
+                                              length + dsc->width + 2, dsc->width + 2);
+    SDL_Texture * target = SDL_GetRenderTarget(sdl_ctx->renderer);
+    SDL_SetRenderTarget(sdl_ctx->renderer, texture);
+    SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
+    SDL_SetRenderDrawColor(sdl_ctx->renderer, 0xFF, 0xFF, 0xFF, 0x0);
+    /* SDL_RenderClear is not working properly, so we overwrite the target with solid color */
+    SDL_SetRenderDrawBlendMode(sdl_ctx->renderer, SDL_BLENDMODE_NONE);
+    SDL_RenderFillRect(sdl_ctx->renderer, NULL);
+    SDL_SetRenderDrawBlendMode(sdl_ctx->renderer, SDL_BLENDMODE_BLEND);
+    SDL_SetRenderDrawColor(sdl_ctx->renderer, 0xFF, 0xFF, 0xFF, 0xFF);
+    SDL_Rect line_rect = {1 + dsc->width / 2, 1, length, dsc->width};
+    SDL_RenderFillRect(sdl_ctx->renderer, &line_rect);
+    if(dsc->round_start || dsc->round_end) {
+        lv_draw_mask_radius_param_t param;
+        lv_area_t round_area = {0, 0, dsc->width - 1, dsc->width - 1};
+        lv_draw_mask_radius_init(&param, &round_area, LV_RADIUS_CIRCLE, false);
+
+        int16_t mask_id = lv_draw_mask_add(&param, NULL);
+        SDL_Texture * round_texture = lv_draw_sdl_mask_dump_texture(sdl_ctx->renderer, &round_area, &mask_id, 1);
+        lv_draw_mask_remove_id(mask_id);
+
+        SDL_Rect round_src = {0, 0, dsc->width, dsc->width};
+        SDL_Rect round_dst = {line_rect.x - dsc->width / 2, 1, dsc->width, dsc->width};
+        SDL_RenderCopy(sdl_ctx->renderer, round_texture, &round_src, &round_dst);
+        round_dst.x = line_rect.w + dsc->width / 2;
+        SDL_RenderCopy(sdl_ctx->renderer, round_texture, &round_src, &round_dst);
+        SDL_DestroyTexture(round_texture);
+    }
+
+    SDL_SetRenderTarget(sdl_ctx->renderer, target);
+    return texture;
+}
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_mask.c

@@ -0,0 +1,84 @@
+/**
+ * @file lv_draw_sdl_mask.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "../../misc/lv_gc.h"
+#include "lv_draw_sdl_mask.h"
+#include "lv_draw_sdl_utils.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#ifndef HAVE_SDL_CUSTOM_BLEND_MODE
+    #define HAVE_SDL_CUSTOM_BLEND_MODE (SDL_VERSION_ATLEAST(2, 0, 6))
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_opa_t * lv_draw_sdl_mask_dump_opa(const lv_area_t * coords, const int16_t * ids, int16_t ids_count)
+{
+    SDL_assert(coords->x2 >= coords->x1);
+    SDL_assert(coords->y2 >= coords->y1);
+    lv_coord_t w = lv_area_get_width(coords), h = lv_area_get_height(coords);
+    lv_opa_t * mask_buf = lv_mem_buf_get(w * h);
+    for(lv_coord_t y = 0; y < h; y++) {
+        lv_opa_t * line_buf = &mask_buf[y * w];
+        lv_memset_ff(line_buf, w);
+        lv_coord_t abs_x = (lv_coord_t) coords->x1, abs_y = (lv_coord_t)(y + coords->y1), len = (lv_coord_t) w;
+        lv_draw_mask_res_t res;
+        if(ids) {
+            res = lv_draw_mask_apply_ids(line_buf, abs_x, abs_y, len, ids, ids_count);
+        }
+        else {
+            res = lv_draw_mask_apply(line_buf, abs_x, abs_y, len);
+        }
+        if(res == LV_DRAW_MASK_RES_TRANSP) {
+            lv_memset_00(line_buf, w);
+        }
+    }
+    return mask_buf;
+}
+
+SDL_Texture * lv_draw_sdl_mask_dump_texture(SDL_Renderer * renderer, const lv_area_t * coords, const int16_t * ids,
+                                            int16_t ids_count)
+{
+    lv_coord_t w = lv_area_get_width(coords), h = lv_area_get_height(coords);
+    lv_opa_t * mask_buf = lv_draw_sdl_mask_dump_opa(coords, ids, ids_count);
+    SDL_Surface * surface = lv_sdl_create_opa_surface(mask_buf, w, h, w);
+    lv_mem_buf_release(mask_buf);
+    SDL_Texture * texture = SDL_CreateTextureFromSurface(renderer, surface);
+    SDL_FreeSurface(surface);
+    return texture;
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_mask.h

@@ -0,0 +1,51 @@
+/**
+ * @file lv_draw_sdl_mask.h
+ *
+ */
+
+#ifndef LV_DRAW_SDL_MASK_H
+#define LV_DRAW_SDL_MASK_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../lv_conf_internal.h"
+
+#include LV_GPU_SDL_INCLUDE_PATH
+
+#include "lv_draw_sdl.h"
+#include "../../misc/lv_area.h"
+#include "../../misc/lv_color.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+lv_opa_t * lv_draw_sdl_mask_dump_opa(const lv_area_t * coords, const int16_t * ids, int16_t ids_count);
+
+SDL_Texture * lv_draw_sdl_mask_dump_texture(SDL_Renderer * renderer, const lv_area_t * coords, const int16_t * ids,
+                                            int16_t ids_count);
+
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SDL_MASK_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_polygon.c

@@ -0,0 +1,133 @@
+/**
+ * @file lv_draw_sdl_polygon.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "lv_draw_sdl.h"
+#include "lv_draw_sdl_utils.h"
+#include "lv_draw_sdl_texture_cache.h"
+#include "lv_draw_sdl_composite.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+static void dump_masks(SDL_Texture * texture, const lv_area_t * coords);
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+void lv_draw_sdl_polygon(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc, const lv_point_t * points,
+                         uint16_t point_cnt)
+{
+    if(point_cnt < 3) return;
+    if(points == NULL) return;
+
+    lv_draw_mask_polygon_param_t polygon_param;
+    lv_draw_mask_polygon_init(&polygon_param, points, point_cnt);
+
+    if(polygon_param.cfg.point_cnt < 3) {
+        lv_draw_mask_free_param(&polygon_param);
+        return;
+    }
+
+    lv_area_t poly_coords = {.x1 = LV_COORD_MAX, .y1 = LV_COORD_MAX, .x2 = LV_COORD_MIN, .y2 = LV_COORD_MIN};
+
+    uint16_t i;
+    for(i = 0; i < point_cnt; i++) {
+        poly_coords.x1 = LV_MIN(poly_coords.x1, polygon_param.cfg.points[i].x);
+        poly_coords.y1 = LV_MIN(poly_coords.y1, polygon_param.cfg.points[i].y);
+        poly_coords.x2 = LV_MAX(poly_coords.x2, polygon_param.cfg.points[i].x);
+        poly_coords.y2 = LV_MAX(poly_coords.y2, polygon_param.cfg.points[i].y);
+    }
+
+    bool is_common;
+    lv_area_t draw_area;
+    is_common = _lv_area_intersect(&draw_area, &poly_coords, draw_ctx->clip_area);
+    if(!is_common) {
+        lv_draw_mask_free_param(&polygon_param);
+        return;
+    }
+
+    lv_draw_sdl_ctx_t * ctx = (lv_draw_sdl_ctx_t *) draw_ctx;
+
+    int16_t mask_id = lv_draw_mask_add(&polygon_param, NULL);
+
+    lv_coord_t w = lv_area_get_width(&draw_area), h = lv_area_get_height(&draw_area);
+    SDL_Texture * texture = lv_draw_sdl_composite_texture_obtain(ctx, LV_DRAW_SDL_COMPOSITE_TEXTURE_ID_STREAM1, w, h);
+    SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
+    dump_masks(texture, &draw_area);
+
+    lv_draw_mask_remove_id(mask_id);
+    lv_draw_mask_free_param(&polygon_param);
+
+    SDL_Rect srcrect = {0, 0, w, h}, dstrect;
+    lv_area_to_sdl_rect(&draw_area, &dstrect);
+    SDL_Color color;
+    lv_color_to_sdl_color(&draw_dsc->bg_color, &color);
+    SDL_SetTextureColorMod(texture, color.r, color.g, color.b);
+    SDL_SetTextureAlphaMod(texture, draw_dsc->bg_opa);
+    SDL_RenderCopy(ctx->renderer, texture, &srcrect, &dstrect);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void dump_masks(SDL_Texture * texture, const lv_area_t * coords)
+{
+    lv_coord_t w = lv_area_get_width(coords), h = lv_area_get_height(coords);
+    SDL_assert(w > 0 && h > 0);
+    SDL_Rect rect = {0, 0, w, h};
+    uint8_t * pixels;
+    int pitch;
+    if(SDL_LockTexture(texture, &rect, (void **) &pixels, &pitch) != 0) return;
+
+    lv_opa_t * line_buf = lv_mem_buf_get(rect.w);
+    for(lv_coord_t y = 0; y < rect.h; y++) {
+        lv_memset_ff(line_buf, rect.w);
+        lv_coord_t abs_x = (lv_coord_t) coords->x1, abs_y = (lv_coord_t)(y + coords->y1), len = (lv_coord_t) rect.w;
+        lv_draw_mask_res_t res;
+        res = lv_draw_mask_apply(line_buf, abs_x, abs_y, len);
+        if(res == LV_DRAW_MASK_RES_TRANSP) {
+            lv_memset_00(&pixels[y * pitch], 4 * rect.w);
+        }
+        else if(res == LV_DRAW_MASK_RES_FULL_COVER) {
+            lv_memset_ff(&pixels[y * pitch], 4 * rect.w);
+        }
+        else {
+            for(int x = 0; x < rect.w; x++) {
+                uint8_t * pixel = &pixels[y * pitch + x * 4];
+                *pixel = line_buf[x];
+                pixel[1] = pixel[2] = pixel[3] = 0xFF;
+            }
+        }
+    }
+    lv_mem_buf_release(line_buf);
+    SDL_UnlockTexture(texture);
+}
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_priv.h

@@ -0,0 +1,72 @@
+/**
+ * @file lv_draw_sdl_priv.h
+ *
+ */
+
+#ifndef LV_DRAW_SDL_PRIV_H
+#define LV_DRAW_SDL_PRIV_H
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include LV_GPU_SDL_INCLUDE_PATH
+
+#include "../lv_draw.h"
+#include "../../misc/lv_lru.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct lv_draw_sdl_context_internals_t {
+    lv_lru_t * texture_cache;
+    SDL_Texture * mask;
+    SDL_Texture * composition;
+    SDL_Texture * target_backup;
+    uint8_t transform_count;
+} lv_draw_sdl_context_internals_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/*======================
+ * Add/remove functions
+ *=====================*/
+
+/*=====================
+ * Setter functions
+ *====================*/
+
+/*=====================
+ * Getter functions
+ *====================*/
+
+/*=====================
+ * Other functions
+ *====================*/
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_GPU_SDL*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SDL_PRIV_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_rect.c

@@ -0,0 +1,712 @@
+/**
+ * @file lv_draw_sdl_rect.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "../lv_draw_rect.h"
+#include "../lv_draw_img.h"
+#include "../lv_draw_label.h"
+#include "../lv_draw_mask.h"
+#include "../../core/lv_refr.h"
+#include "lv_draw_sdl_utils.h"
+#include "lv_draw_sdl_texture_cache.h"
+#include "lv_draw_sdl_composite.h"
+#include "lv_draw_sdl_mask.h"
+#include "lv_draw_sdl_stack_blur.h"
+#include "lv_draw_sdl_layer.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    lv_sdl_cache_key_magic_t magic;
+    lv_coord_t radius;
+    lv_coord_t size;
+} lv_draw_rect_bg_key_t;
+
+typedef struct {
+    lv_sdl_cache_key_magic_t magic;
+    lv_coord_t radius;
+    lv_coord_t size;
+    lv_coord_t blur;
+} lv_draw_rect_shadow_key_t;
+
+typedef struct {
+    lv_sdl_cache_key_magic_t magic;
+    lv_coord_t rout, rin;
+    lv_area_t offsets;
+} lv_draw_rect_border_key_t;
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static void draw_bg_color(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * draw_area,
+                          const lv_draw_rect_dsc_t * dsc);
+
+static void draw_bg_img(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * draw_area,
+                        const lv_draw_rect_dsc_t * dsc);
+
+static void draw_border(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * draw_area,
+                        const lv_draw_rect_dsc_t * dsc);
+
+static void draw_shadow(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * clip,
+                        const lv_draw_rect_dsc_t * dsc);
+
+static void draw_outline(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * clip,
+                         const lv_draw_rect_dsc_t * dsc);
+
+static void draw_border_generic(lv_draw_sdl_ctx_t * ctx, const lv_area_t * outer_area, const lv_area_t * inner_area,
+                                const lv_area_t * clip, lv_coord_t rout, lv_coord_t rin, lv_color_t color, lv_opa_t opa,
+                                lv_blend_mode_t blend_mode);
+
+static void frag_render_borders(SDL_Renderer * renderer, SDL_Texture * frag, lv_coord_t frag_size,
+                                const lv_area_t * coords, const lv_area_t * clipped, bool full);
+
+static void frag_render_center(SDL_Renderer * renderer, SDL_Texture * frag, lv_coord_t frag_size,
+                               const lv_area_t * coords, const lv_area_t * clipped, bool full);
+
+static lv_draw_rect_bg_key_t rect_bg_key_create(lv_coord_t radius, lv_coord_t size);
+
+static lv_draw_rect_shadow_key_t rect_shadow_key_create(lv_coord_t radius, lv_coord_t size, lv_coord_t blur);
+
+static lv_draw_rect_border_key_t rect_border_key_create(lv_coord_t rout, lv_coord_t rin, const lv_area_t * outer_area,
+                                                        const lv_area_t * inner_area);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+#define SKIP_BORDER(dsc) ((dsc)->border_opa <= LV_OPA_MIN || (dsc)->border_width == 0 || (dsc)->border_side == LV_BORDER_SIDE_NONE || (dsc)->border_post)
+#define SKIP_SHADOW(dsc) ((dsc)->shadow_width == 0 || (dsc)->shadow_opa <= LV_OPA_MIN || ((dsc)->shadow_width == 1 && (dsc)->shadow_spread <= 0 && (dsc)->shadow_ofs_x == 0 && (dsc)->shadow_ofs_y == 0))
+#define SKIP_IMAGE(dsc) ((dsc)->bg_img_src == NULL || (dsc)->bg_img_opa <= LV_OPA_MIN)
+#define SKIP_OUTLINE(dsc) ((dsc)->outline_opa <= LV_OPA_MIN || (dsc)->outline_width == 0)
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_sdl_draw_rect(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
+{
+    const lv_area_t * clip = draw_ctx->clip_area;
+    lv_draw_sdl_ctx_t * ctx = (lv_draw_sdl_ctx_t *) draw_ctx;
+
+    lv_area_t extension = {0, 0, 0, 0};
+    if(!SKIP_SHADOW(dsc)) {
+        lv_coord_t ext = (lv_coord_t)(dsc->shadow_spread - dsc->shadow_width / 2 + 1);
+        extension.x1 = LV_MAX(extension.x1, -dsc->shadow_ofs_x + ext);
+        extension.x2 = LV_MAX(extension.x2, dsc->shadow_ofs_x + ext);
+        extension.y1 = LV_MAX(extension.y1, -dsc->shadow_ofs_y + ext);
+        extension.y2 = LV_MAX(extension.y2, dsc->shadow_ofs_y + ext);
+    }
+    if(!SKIP_OUTLINE(dsc)) {
+        lv_coord_t ext = (lv_coord_t)(dsc->outline_pad - 1 + dsc->outline_width);
+        extension.x1 = LV_MAX(extension.x1, ext);
+        extension.x2 = LV_MAX(extension.x2, ext);
+        extension.y1 = LV_MAX(extension.y1, ext);
+        extension.y2 = LV_MAX(extension.y2, ext);
+    }
+    /* Coords will be translated so coords will start at (0,0) */
+    lv_area_t t_coords = *coords, t_clip = *clip, apply_area, t_area;
+    bool has_composite = lv_draw_sdl_composite_begin(ctx, coords, clip, &extension, dsc->blend_mode, &t_coords, &t_clip,
+                                                     &apply_area);
+
+    lv_draw_sdl_transform_areas_offset(ctx, has_composite, &apply_area, &t_coords, &t_clip);
+
+    bool has_content = _lv_area_intersect(&t_area, &t_coords, &t_clip);
+
+    SDL_Rect clip_rect;
+    lv_area_to_sdl_rect(&t_clip, &clip_rect);
+    draw_shadow(ctx, &t_coords, &t_clip, dsc);
+    /* Shadows and outlines will also draw in extended area */
+    if(has_content) {
+        draw_bg_color(ctx, &t_coords, &t_area, dsc);
+        draw_bg_img(ctx, &t_coords, &t_area, dsc);
+        draw_border(ctx, &t_coords, &t_area, dsc);
+    }
+    draw_outline(ctx, &t_coords, &t_clip, dsc);
+
+    lv_draw_sdl_composite_end(ctx, &apply_area, dsc->blend_mode);
+}
+
+SDL_Texture * lv_draw_sdl_rect_bg_frag_obtain(lv_draw_sdl_ctx_t * ctx, lv_coord_t radius)
+{
+    lv_draw_rect_bg_key_t key = rect_bg_key_create(radius, radius);
+    lv_area_t coords = {0, 0, radius * 2 - 1, radius * 2 - 1};
+    lv_area_t coords_frag = {0, 0, radius - 1, radius - 1};
+    SDL_Texture * texture = lv_draw_sdl_texture_cache_get(ctx, &key, sizeof(key), NULL);
+    if(texture == NULL) {
+        lv_draw_mask_radius_param_t mask_rout_param;
+        lv_draw_mask_radius_init(&mask_rout_param, &coords, radius, false);
+        int16_t mask_id = lv_draw_mask_add(&mask_rout_param, NULL);
+        texture = lv_draw_sdl_mask_dump_texture(ctx->renderer, &coords_frag, &mask_id, 1);
+        lv_draw_mask_remove_id(mask_id);
+        SDL_assert(texture);
+        lv_draw_sdl_texture_cache_put(ctx, &key, sizeof(key), texture);
+    }
+    return texture;
+}
+
+void lv_draw_sdl_rect_bg_frag_draw_corners(lv_draw_sdl_ctx_t * ctx, SDL_Texture * frag, lv_coord_t frag_size,
+                                           const lv_area_t * coords, const lv_area_t * clip, bool full)
+{
+    if(!clip) clip = coords;
+    lv_area_t corner_area, dst_area;
+    /* Upper left */
+    corner_area.x1 = coords->x1;
+    corner_area.y1 = coords->y1;
+    corner_area.x2 = coords->x1 + frag_size - 1;
+    corner_area.y2 = coords->y1 + frag_size - 1;
+    if(_lv_area_intersect(&dst_area, &corner_area, clip)) {
+        SDL_Rect dst_rect;
+        lv_area_to_sdl_rect(&dst_area, &dst_rect);
+
+        lv_coord_t dw = lv_area_get_width(&dst_area), dh = lv_area_get_height(&dst_area);
+        lv_coord_t sx = (lv_coord_t)(dst_area.x1 - corner_area.x1), sy = (lv_coord_t)(dst_area.y1 - corner_area.y1);
+        SDL_Rect src_rect = {sx, sy, dw, dh};
+        SDL_RenderCopy(ctx->renderer, frag, &src_rect, &dst_rect);
+    }
+    /* Upper right, clip right edge if too big */
+    corner_area.x1 = LV_MAX(coords->x2 - frag_size + 1, coords->x1 + frag_size);
+    corner_area.x2 = coords->x2;
+    if(_lv_area_intersect(&dst_area, &corner_area, clip)) {
+        SDL_Rect dst_rect;
+        lv_area_to_sdl_rect(&dst_area, &dst_rect);
+
+        lv_coord_t dw = lv_area_get_width(&dst_area), dh = lv_area_get_height(&dst_area);
+        if(full) {
+            lv_coord_t sx = (lv_coord_t)(dst_area.x1 - corner_area.x1),
+                       sy = (lv_coord_t)(dst_area.y1 - corner_area.y1);
+            SDL_Rect src_rect = {frag_size + 3 + sx, sy, dw, dh};
+            SDL_RenderCopy(ctx->renderer, frag, &src_rect, &dst_rect);
+        }
+        else {
+            SDL_Rect src_rect = {corner_area.x2 - dst_area.x2, dst_area.y1 - corner_area.y1, dw, dh};
+            SDL_RenderCopyEx(ctx->renderer, frag, &src_rect, &dst_rect, 0, NULL, SDL_FLIP_HORIZONTAL);
+        }
+    }
+    /* Lower right, clip bottom edge if too big */
+    corner_area.y1 = LV_MAX(coords->y2 - frag_size + 1, coords->y1 + frag_size);
+    corner_area.y2 = coords->y2;
+    if(_lv_area_intersect(&dst_area, &corner_area, clip)) {
+        SDL_Rect dst_rect;
+        lv_area_to_sdl_rect(&dst_area, &dst_rect);
+
+        lv_coord_t dw = lv_area_get_width(&dst_area), dh = lv_area_get_height(&dst_area);
+        if(full) {
+            lv_coord_t sx = (lv_coord_t)(dst_area.x1 - corner_area.x1),
+                       sy = (lv_coord_t)(dst_area.y1 - corner_area.y1);
+            SDL_Rect src_rect = {frag_size + 3 + sx, frag_size + 3 + sy, dw, dh};
+            SDL_RenderCopy(ctx->renderer, frag, &src_rect, &dst_rect);
+        }
+        else {
+            SDL_Rect src_rect = {corner_area.x2 - dst_area.x2, corner_area.y2 - dst_area.y2, dw, dh};
+            SDL_RenderCopyEx(ctx->renderer, frag, &src_rect, &dst_rect, 0, NULL, SDL_FLIP_HORIZONTAL | SDL_FLIP_VERTICAL);
+        }
+    }
+    /* Lower left, right edge should not be clip */
+    corner_area.x1 = coords->x1;
+    corner_area.x2 = coords->x1 + frag_size - 1;
+    if(_lv_area_intersect(&dst_area, &corner_area, clip)) {
+        SDL_Rect dst_rect;
+        lv_area_to_sdl_rect(&dst_area, &dst_rect);
+
+        lv_coord_t dw = lv_area_get_width(&dst_area), dh = lv_area_get_height(&dst_area);
+        if(full) {
+            lv_coord_t sx = (lv_coord_t)(dst_area.x1 - corner_area.x1),
+                       sy = (lv_coord_t)(dst_area.y1 - corner_area.y1);
+            SDL_Rect src_rect = {sx, frag_size + 3 + sy, dw, dh};
+            SDL_RenderCopy(ctx->renderer, frag, &src_rect, &dst_rect);
+        }
+        else {
+            SDL_Rect src_rect = {dst_area.x1 - corner_area.x1, corner_area.y2 - dst_area.y2, dw, dh};
+            SDL_RenderCopyEx(ctx->renderer, frag, &src_rect, &dst_rect, 0, NULL, SDL_FLIP_VERTICAL);
+        }
+    }
+}
+
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void draw_bg_color(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * draw_area,
+                          const lv_draw_rect_dsc_t * dsc)
+{
+    if(dsc->bg_opa == 0) {
+        return;
+    }
+    SDL_Color bg_color;
+    lv_color_to_sdl_color(&dsc->bg_color, &bg_color);
+    lv_coord_t radius = dsc->radius;
+    if(radius <= 0) {
+        SDL_Rect rect;
+        lv_area_to_sdl_rect(draw_area, &rect);
+        SDL_SetRenderDrawColor(ctx->renderer, bg_color.r, bg_color.g, bg_color.b, dsc->bg_opa);
+        SDL_SetRenderDrawBlendMode(ctx->renderer, SDL_BLENDMODE_BLEND);
+        SDL_RenderFillRect(ctx->renderer, &rect);
+        return;
+    }
+
+    /*A small texture with a quarter of the rect is enough*/
+    lv_coord_t bg_w = lv_area_get_width(coords), bg_h = lv_area_get_height(coords);
+    lv_coord_t real_radius = LV_MIN3(bg_w / 2, bg_h / 2, radius);
+    SDL_Texture * texture = lv_draw_sdl_rect_bg_frag_obtain(ctx, real_radius);
+
+    SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
+    SDL_SetTextureAlphaMod(texture, dsc->bg_opa);
+    SDL_SetTextureColorMod(texture, bg_color.r, bg_color.g, bg_color.b);
+    lv_draw_sdl_rect_bg_frag_draw_corners(ctx, texture, real_radius, coords, draw_area, false);
+    frag_render_borders(ctx->renderer, texture, real_radius, coords, draw_area, false);
+    frag_render_center(ctx->renderer, texture, real_radius, coords, draw_area, false);
+}
+
+static void draw_bg_img(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * draw_area,
+                        const lv_draw_rect_dsc_t * dsc)
+{
+    if(SKIP_IMAGE(dsc)) return;
+
+    lv_img_src_t src_type = lv_img_src_get_type(dsc->bg_img_src);
+    if(src_type == LV_IMG_SRC_SYMBOL) {
+        lv_point_t size;
+        lv_txt_get_size(&size, dsc->bg_img_src, dsc->bg_img_symbol_font, 0, 0, LV_COORD_MAX, LV_TEXT_FLAG_NONE);
+        lv_area_t a;
+        a.x1 = coords->x1 + lv_area_get_width(coords) / 2 - size.x / 2;
+        a.x2 = a.x1 + size.x - 1;
+        a.y1 = coords->y1 + lv_area_get_height(coords) / 2 - size.y / 2;
+        a.y2 = a.y1 + size.y - 1;
+
+        lv_draw_label_dsc_t label_draw_dsc;
+        lv_draw_label_dsc_init(&label_draw_dsc);
+        label_draw_dsc.font = dsc->bg_img_symbol_font;
+        label_draw_dsc.color = dsc->bg_img_recolor;
+        label_draw_dsc.opa = dsc->bg_img_opa;
+        lv_draw_label((lv_draw_ctx_t *) ctx, &label_draw_dsc, &a, dsc->bg_img_src, NULL);
+    }
+    else {
+        lv_img_header_t header;
+        size_t key_size;
+        lv_draw_sdl_cache_key_head_img_t * key = lv_draw_sdl_texture_img_key_create(dsc->bg_img_src, 0, &key_size);
+        bool key_found;
+        lv_img_header_t * cache_header = NULL;
+        SDL_Texture * texture = lv_draw_sdl_texture_cache_get_with_userdata(ctx, key, key_size, &key_found,
+                                                                            (void **) &cache_header);
+        SDL_free(key);
+        if(texture) {
+            header = *cache_header;
+        }
+        else if(key_found || lv_img_decoder_get_info(dsc->bg_img_src, &header) != LV_RES_OK) {
+            /* When cache hit but with negative result, use default decoder. If still fail, return.*/
+            LV_LOG_WARN("Couldn't read the background image");
+            return;
+        }
+
+        lv_draw_img_dsc_t img_dsc;
+        lv_draw_img_dsc_init(&img_dsc);
+        img_dsc.blend_mode = dsc->blend_mode;
+        img_dsc.recolor = dsc->bg_img_recolor;
+        img_dsc.recolor_opa = dsc->bg_img_recolor_opa;
+        img_dsc.opa = dsc->bg_img_opa;
+        img_dsc.frame_id = 0;
+
+        int16_t radius_mask_id = LV_MASK_ID_INV;
+        lv_draw_mask_radius_param_t radius_param;
+        if(dsc->radius > 0) {
+            lv_draw_mask_radius_init(&radius_param, coords, dsc->radius, false);
+            radius_mask_id = lv_draw_mask_add(&radius_param, NULL);
+        }
+
+        /*Center align*/
+        if(dsc->bg_img_tiled == false) {
+            lv_area_t area;
+            area.x1 = coords->x1 + lv_area_get_width(coords) / 2 - header.w / 2;
+            area.y1 = coords->y1 + lv_area_get_height(coords) / 2 - header.h / 2;
+            area.x2 = area.x1 + header.w - 1;
+            area.y2 = area.y1 + header.h - 1;
+
+            lv_draw_img((lv_draw_ctx_t *) ctx, &img_dsc, &area, dsc->bg_img_src);
+        }
+        else {
+            lv_area_t area;
+            area.y1 = coords->y1;
+            area.y2 = area.y1 + header.h - 1;
+
+            for(; area.y1 <= coords->y2; area.y1 += header.h, area.y2 += header.h) {
+
+                area.x1 = coords->x1;
+                area.x2 = area.x1 + header.w - 1;
+                for(; area.x1 <= coords->x2; area.x1 += header.w, area.x2 += header.w) {
+                    lv_draw_img((lv_draw_ctx_t *) ctx, &img_dsc, &area, dsc->bg_img_src);
+                }
+            }
+        }
+
+        if(radius_mask_id != LV_MASK_ID_INV) {
+            lv_draw_mask_remove_id(radius_mask_id);
+            lv_draw_mask_free_param(&radius_param);
+        }
+    }
+}
+
+static void draw_shadow(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * clip,
+                        const lv_draw_rect_dsc_t * dsc)
+{
+    /*Check whether the shadow is visible*/
+    if(SKIP_SHADOW(dsc)) return;
+
+    lv_coord_t sw = dsc->shadow_width;
+
+    lv_area_t core_area;
+    core_area.x1 = coords->x1 + dsc->shadow_ofs_x - dsc->shadow_spread;
+    core_area.x2 = coords->x2 + dsc->shadow_ofs_x + dsc->shadow_spread;
+    core_area.y1 = coords->y1 + dsc->shadow_ofs_y - dsc->shadow_spread;
+    core_area.y2 = coords->y2 + dsc->shadow_ofs_y + dsc->shadow_spread;
+
+    lv_area_t shadow_area;
+    shadow_area.x1 = core_area.x1 - sw / 2 - 1;
+    shadow_area.x2 = core_area.x2 + sw / 2 + 1;
+    shadow_area.y1 = core_area.y1 - sw / 2 - 1;
+    shadow_area.y2 = core_area.y2 + sw / 2 + 1;
+
+    lv_opa_t opa = dsc->shadow_opa;
+
+    if(opa > LV_OPA_MAX) opa = LV_OPA_COVER;
+
+    /*Get clipped draw area which is the real draw area.
+     *It is always the same or inside `shadow_area`*/
+    lv_area_t draw_area;
+    if(!_lv_area_intersect(&draw_area, &shadow_area, clip)) return;
+
+    SDL_Rect core_area_rect;
+    lv_area_to_sdl_rect(&shadow_area, &core_area_rect);
+
+    lv_coord_t radius = dsc->radius;
+    /* No matter how big the shadow is, what we need is just a corner */
+    lv_coord_t frag_size = LV_MIN3(lv_area_get_width(&core_area) / 2, lv_area_get_height(&core_area) / 2,
+                                   LV_MAX(sw / 2, radius));
+
+    /* This is how big the corner is after blurring */
+    lv_coord_t blur_growth = (lv_coord_t)(sw / 2 + 1);
+
+    lv_coord_t blur_frag_size = (lv_coord_t)(frag_size + blur_growth);
+
+    lv_draw_rect_shadow_key_t key = rect_shadow_key_create(radius, frag_size, sw);
+
+    SDL_Texture * texture = lv_draw_sdl_texture_cache_get(ctx, &key, sizeof(key), NULL);
+    if(texture == NULL) {
+        lv_area_t mask_area = {blur_growth, blur_growth}, mask_area_blurred = {0, 0};
+        lv_area_set_width(&mask_area, frag_size * 2);
+        lv_area_set_height(&mask_area, frag_size * 2);
+        lv_area_set_width(&mask_area_blurred, blur_frag_size * 2);
+        lv_area_set_height(&mask_area_blurred, blur_frag_size * 2);
+
+        lv_draw_mask_radius_param_t mask_rout_param;
+        lv_draw_mask_radius_init(&mask_rout_param, &mask_area, radius, false);
+        int16_t mask_id = lv_draw_mask_add(&mask_rout_param, NULL);
+        lv_opa_t * mask_buf = lv_draw_sdl_mask_dump_opa(&mask_area_blurred, &mask_id, 1);
+        lv_stack_blur_grayscale(mask_buf, lv_area_get_width(&mask_area_blurred), lv_area_get_height(&mask_area_blurred),
+                                sw / 2 + sw % 2);
+        texture = lv_sdl_create_opa_texture(ctx->renderer, mask_buf, blur_frag_size, blur_frag_size,
+                                            lv_area_get_width(&mask_area_blurred));
+        lv_mem_buf_release(mask_buf);
+        lv_draw_mask_remove_id(mask_id);
+        SDL_assert(texture);
+        lv_draw_sdl_texture_cache_put(ctx, &key, sizeof(key), texture);
+    }
+
+    SDL_Color shadow_color;
+    lv_color_to_sdl_color(&dsc->shadow_color, &shadow_color);
+    SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
+    SDL_SetTextureAlphaMod(texture, opa);
+    SDL_SetTextureColorMod(texture, shadow_color.r, shadow_color.g, shadow_color.b);
+
+    lv_draw_sdl_rect_bg_frag_draw_corners(ctx, texture, blur_frag_size, &shadow_area, clip, false);
+    frag_render_borders(ctx->renderer, texture, blur_frag_size, &shadow_area, clip, false);
+    frag_render_center(ctx->renderer, texture, blur_frag_size, &shadow_area, clip, false);
+}
+
+
+static void draw_border(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * draw_area,
+                        const lv_draw_rect_dsc_t * dsc)
+{
+    if(SKIP_BORDER(dsc)) return;
+
+    SDL_Color border_color;
+    lv_color_to_sdl_color(&dsc->border_color, &border_color);
+
+    lv_coord_t coords_w = lv_area_get_width(coords), coords_h = lv_area_get_height(coords);
+    lv_coord_t short_side = LV_MIN(coords_w, coords_h);
+    lv_coord_t rout = LV_MIN(dsc->radius, short_side / 2);/*Get the inner area*/
+    lv_area_t area_inner;
+    lv_area_copy(&area_inner, coords);//        lv_area_increase(&area_inner, 1, 1);
+    area_inner.x1 += ((dsc->border_side & LV_BORDER_SIDE_LEFT) ? dsc->border_width : -(dsc->border_width + rout));
+    area_inner.x2 -= ((dsc->border_side & LV_BORDER_SIDE_RIGHT) ? dsc->border_width : -(dsc->border_width + rout));
+    area_inner.y1 += ((dsc->border_side & LV_BORDER_SIDE_TOP) ? dsc->border_width : -(dsc->border_width + rout));
+    area_inner.y2 -= ((dsc->border_side & LV_BORDER_SIDE_BOTTOM) ? dsc->border_width : -(dsc->border_width + rout));
+    lv_coord_t rin = LV_MAX(rout - dsc->border_width, 0);
+    draw_border_generic(ctx, coords, &area_inner, draw_area, rout, rin, dsc->border_color, dsc->border_opa,
+                        dsc->blend_mode);
+}
+
+static void draw_outline(lv_draw_sdl_ctx_t * ctx, const lv_area_t * coords, const lv_area_t * clip,
+                         const lv_draw_rect_dsc_t * dsc)
+{
+    if(SKIP_OUTLINE(dsc)) return;
+
+    lv_opa_t opa = dsc->outline_opa;
+
+    if(opa > LV_OPA_MAX) opa = LV_OPA_COVER;
+
+    /*Get the inner radius*/
+    lv_area_t area_inner;
+    lv_area_copy(&area_inner, coords);
+
+    /*Bring the outline closer to make sure there is no color bleeding with pad=0*/
+    lv_coord_t pad = dsc->outline_pad - 1;
+    area_inner.x1 -= pad;
+    area_inner.y1 -= pad;
+    area_inner.x2 += pad;
+    area_inner.y2 += pad;
+
+    lv_area_t area_outer;
+    lv_area_copy(&area_outer, &area_inner);
+
+    area_outer.x1 -= dsc->outline_width;
+    area_outer.x2 += dsc->outline_width;
+    area_outer.y1 -= dsc->outline_width;
+    area_outer.y2 += dsc->outline_width;
+
+    lv_area_t draw_area;
+    if(!_lv_area_intersect(&draw_area, &area_outer, clip)) return;
+
+    int32_t inner_w = lv_area_get_width(&area_inner);
+    int32_t inner_h = lv_area_get_height(&area_inner);
+    lv_coord_t rin = dsc->radius;
+    int32_t short_side = LV_MIN(inner_w, inner_h);
+    if(rin > short_side >> 1) rin = short_side >> 1;
+
+    lv_coord_t rout = rin + dsc->outline_width;
+
+    draw_border_generic(ctx, &area_outer, &area_inner, clip, rout, rin, dsc->outline_color, dsc->outline_opa,
+                        dsc->blend_mode);
+}
+
+static void draw_border_generic(lv_draw_sdl_ctx_t * ctx, const lv_area_t * outer_area, const lv_area_t * inner_area,
+                                const lv_area_t * clip, lv_coord_t rout, lv_coord_t rin, lv_color_t color, lv_opa_t opa,
+                                lv_blend_mode_t blend_mode)
+{
+    opa = opa >= LV_OPA_COVER ? LV_OPA_COVER : opa;
+
+    SDL_Renderer * renderer = ctx->renderer;
+
+    lv_draw_rect_border_key_t key = rect_border_key_create(rout, rin, outer_area, inner_area);
+    lv_coord_t radius = LV_MIN3(rout, lv_area_get_width(outer_area) / 2, lv_area_get_height(outer_area) / 2);
+    lv_coord_t max_side = LV_MAX4(key.offsets.x1, key.offsets.y1, -key.offsets.x2, -key.offsets.y2);
+    lv_coord_t frag_size = LV_MAX(radius, max_side);
+    SDL_Texture * texture = lv_draw_sdl_texture_cache_get(ctx, &key, sizeof(key), NULL);
+    if(texture == NULL) {
+        /* Create a mask texture with size of (frag_size * 2 + 3) */
+        const lv_area_t frag_area = {0, 0, frag_size * 2 + 2, frag_size * 2 + 2};
+
+        /*Create mask for the outer area*/
+        int16_t mask_ids[2] = {LV_MASK_ID_INV, LV_MASK_ID_INV};
+        lv_draw_mask_radius_param_t mask_rout_param;
+        if(rout > 0) {
+            lv_draw_mask_radius_init(&mask_rout_param, &frag_area, rout, false);
+            mask_ids[0] = lv_draw_mask_add(&mask_rout_param, NULL);
+        }
+
+        /*Create mask for the inner mask*/
+        if(rin < 0) rin = 0;
+        const lv_area_t frag_inner_area = {frag_area.x1 + key.offsets.x1, frag_area.y1 + key.offsets.y1,
+                                           frag_area.x2 + key.offsets.x2, frag_area.y2 + key.offsets.y2
+                                          };
+        lv_draw_mask_radius_param_t mask_rin_param;
+        lv_draw_mask_radius_init(&mask_rin_param, &frag_inner_area, rin, true);
+        mask_ids[1] = lv_draw_mask_add(&mask_rin_param, NULL);
+
+        texture = lv_draw_sdl_mask_dump_texture(renderer, &frag_area, mask_ids, 2);
+
+        lv_draw_mask_remove_id(mask_ids[1]);
+        lv_draw_mask_remove_id(mask_ids[0]);
+        SDL_assert(texture);
+        lv_draw_sdl_texture_cache_put(ctx, &key, sizeof(key), texture);
+    }
+
+    SDL_Rect outer_rect;
+    lv_area_to_sdl_rect(outer_area, &outer_rect);
+    SDL_Color color_sdl;
+    lv_color_to_sdl_color(&color, &color_sdl);
+
+    SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
+    SDL_SetTextureAlphaMod(texture, opa);
+    SDL_SetTextureColorMod(texture, color_sdl.r, color_sdl.g, color_sdl.b);
+
+    lv_draw_sdl_rect_bg_frag_draw_corners(ctx, texture, frag_size, outer_area, clip, true);
+    frag_render_borders(renderer, texture, frag_size, outer_area, clip, true);
+}
+
+static void frag_render_borders(SDL_Renderer * renderer, SDL_Texture * frag, lv_coord_t frag_size,
+                                const lv_area_t * coords, const lv_area_t * clipped, bool full)
+{
+    lv_area_t border_area, dst_area;
+    /* Top border */
+    border_area.x1 = coords->x1 + frag_size;
+    border_area.y1 = coords->y1;
+    border_area.x2 = coords->x2 - frag_size;
+    border_area.y2 = coords->y1 + frag_size - 1;
+    if(_lv_area_intersect(&dst_area, &border_area, clipped)) {
+        SDL_Rect dst_rect;
+        lv_area_to_sdl_rect(&dst_area, &dst_rect);
+
+        lv_coord_t sy = (lv_coord_t)(dst_area.y1 - border_area.y1);
+        if(full) {
+            SDL_Rect src_rect = {frag_size + 1, sy, 1, lv_area_get_height(&dst_area)};
+            SDL_RenderCopy(renderer, frag, &src_rect, &dst_rect);
+        }
+        else {
+            SDL_Rect src_rect = {frag_size - 1, sy, 1, lv_area_get_height(&dst_area)};
+            SDL_RenderCopy(renderer, frag, &src_rect, &dst_rect);
+        }
+    }
+    /* Bottom border */
+    border_area.y1 = LV_MAX(coords->y2 - frag_size + 1, coords->y1 + frag_size);
+    border_area.y2 = coords->y2;
+    if(_lv_area_intersect(&dst_area, &border_area, clipped)) {
+        SDL_Rect dst_rect;
+        lv_area_to_sdl_rect(&dst_area, &dst_rect);
+
+        lv_coord_t dh = lv_area_get_height(&dst_area);
+        if(full) {
+            lv_coord_t sy = (lv_coord_t)(dst_area.y1 - border_area.y1);
+            SDL_Rect src_rect = {frag_size + 1, frag_size + 3 + sy, 1, dh};
+            SDL_RenderCopy(renderer, frag, &src_rect, &dst_rect);
+        }
+        else {
+            lv_coord_t sy = (lv_coord_t)(border_area.y2 - dst_area.y2);
+            SDL_Rect src_rect = {frag_size - 1, sy, 1, dh};
+            SDL_RenderCopyEx(renderer, frag, &src_rect, &dst_rect, 0, NULL, SDL_FLIP_VERTICAL);
+        }
+    }
+    /* Left border */
+    border_area.x1 = coords->x1;
+    border_area.y1 = coords->y1 + frag_size;
+    border_area.x2 = coords->x1 + frag_size - 1;
+    border_area.y2 = coords->y2 - frag_size;
+    if(_lv_area_intersect(&dst_area, &border_area, clipped)) {
+        SDL_Rect dst_rect;
+        lv_area_to_sdl_rect(&dst_area, &dst_rect);
+
+        lv_coord_t dw = lv_area_get_width(&dst_area);
+        lv_coord_t sx = (lv_coord_t)(dst_area.x1 - border_area.x1);
+        if(full) {
+            SDL_Rect src_rect = {sx, frag_size + 1, dw, 1};
+            SDL_RenderCopy(renderer, frag, &src_rect, &dst_rect);
+        }
+        else {
+            SDL_Rect src_rect = {sx, frag_size - 1, dw, 1};
+            SDL_RenderCopy(renderer, frag, &src_rect, &dst_rect);
+        }
+    }
+    /* Right border */
+    border_area.x1 = LV_MAX(coords->x2 - frag_size + 1, coords->x1 + frag_size);
+    border_area.x2 = coords->x2;
+    if(_lv_area_intersect(&dst_area, &border_area, clipped)) {
+        SDL_Rect dst_rect;
+        lv_area_to_sdl_rect(&dst_area, &dst_rect);
+
+        lv_coord_t dw = lv_area_get_width(&dst_area);
+        if(full) {
+            lv_coord_t sx = (lv_coord_t)(dst_area.x1 - border_area.x1);
+            SDL_Rect src_rect = {frag_size + 3 + sx, frag_size + 1, dw, 1};
+            SDL_RenderCopy(renderer, frag, &src_rect, &dst_rect);
+        }
+        else {
+            lv_coord_t sx = (lv_coord_t)(border_area.x2 - dst_area.x2);
+            SDL_Rect src_rect = {sx, frag_size - 1, dw, 1};
+            SDL_RenderCopyEx(renderer, frag, &src_rect, &dst_rect, 0, NULL, SDL_FLIP_HORIZONTAL);
+        }
+    }
+}
+
+static void frag_render_center(SDL_Renderer * renderer, SDL_Texture * frag, lv_coord_t frag_size,
+                               const lv_area_t * coords,
+                               const lv_area_t * clipped, bool full)
+{
+    lv_area_t center_area = {
+        coords->x1 + frag_size,
+        coords->y1 + frag_size,
+        coords->x2 - frag_size,
+        coords->y2 - frag_size,
+    };
+    if(center_area.x2 < center_area.x1 || center_area.y2 < center_area.y1) return;
+    lv_area_t draw_area;
+    if(!_lv_area_intersect(&draw_area, &center_area, clipped)) {
+        return;
+    }
+    SDL_Rect dst_rect;
+    lv_area_to_sdl_rect(&draw_area, &dst_rect);
+    if(full) {
+        SDL_Rect src_rect = {frag_size, frag_size, 1, 1};
+        SDL_RenderCopy(renderer, frag, &src_rect, &dst_rect);
+    }
+    else {
+        SDL_Rect src_rect = {frag_size - 1, frag_size - 1, 1, 1};
+        SDL_RenderCopy(renderer, frag, &src_rect, &dst_rect);
+    }
+}
+
+static lv_draw_rect_bg_key_t rect_bg_key_create(lv_coord_t radius, lv_coord_t size)
+{
+    lv_draw_rect_bg_key_t key;
+    SDL_memset(&key, 0, sizeof(key));
+    key.magic = LV_GPU_CACHE_KEY_MAGIC_RECT_BG;
+    key.radius = radius;
+    key.size = size;
+    return key;
+}
+
+static lv_draw_rect_shadow_key_t rect_shadow_key_create(lv_coord_t radius, lv_coord_t size, lv_coord_t blur)
+{
+    lv_draw_rect_shadow_key_t key;
+    SDL_memset(&key, 0, sizeof(key));
+    key.magic = LV_GPU_CACHE_KEY_MAGIC_RECT_SHADOW;
+    key.radius = radius;
+    key.size = size;
+    key.blur = blur;
+    return key;
+}
+
+static lv_draw_rect_border_key_t rect_border_key_create(lv_coord_t rout, lv_coord_t rin, const lv_area_t * outer_area,
+                                                        const lv_area_t * inner_area)
+{
+    lv_draw_rect_border_key_t key;
+    /* VERY IMPORTANT! Padding between members is uninitialized, so we have to wipe them manually */
+    SDL_memset(&key, 0, sizeof(key));
+    key.magic = LV_GPU_CACHE_KEY_MAGIC_RECT_BORDER;
+    key.rout = rout;
+    key.rin = rin;
+    key.offsets.x1 = inner_area->x1 - outer_area->x1;
+    key.offsets.x2 = inner_area->x2 - outer_area->x2;
+    key.offsets.y1 = inner_area->y1 - outer_area->y1;
+    key.offsets.y2 = inner_area->y2 - outer_area->y2;
+    return key;
+}
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_rect.h

@@ -0,0 +1,75 @@
+/**
+ * @file lv_draw_sdl_rect.h
+ *
+ */
+
+#ifndef LV_DRAW_SDL_RECT_H
+#define LV_DRAW_SDL_RECT_H
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include LV_GPU_SDL_INCLUDE_PATH
+
+#include "../lv_draw.h"
+
+#include "lv_draw_sdl_texture_cache.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct lv_draw_sdl_rect_header_t {
+    lv_img_header_t base;
+    SDL_Rect rect;
+} lv_draw_sdl_rect_header_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/*======================
+ * Add/remove functions
+ *=====================*/
+
+/*=====================
+ * Setter functions
+ *====================*/
+
+/*=====================
+ * Getter functions
+ *====================*/
+
+/*=====================
+ * Other functions
+ *====================*/
+
+SDL_Texture * lv_draw_sdl_rect_bg_frag_obtain(lv_draw_sdl_ctx_t * ctx, lv_coord_t radius);
+
+void lv_draw_sdl_rect_bg_frag_draw_corners(lv_draw_sdl_ctx_t * ctx, SDL_Texture * frag, lv_coord_t frag_size,
+                                           const lv_area_t * coords, const lv_area_t * clip, bool full);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_GPU_SDL*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SDL_RECT_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_stack_blur.c

@@ -0,0 +1,249 @@
+/**
+ * @file lv_draw_sdl_stack_blur.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_sdl_stack_blur.h"
+
+#if LV_USE_GPU_SDL
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static void
+stack_blur_job(lv_opa_t * src, unsigned int w, unsigned int h, unsigned int radius, int cores, int core, int step);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+// Based heavily on http://vitiy.info/Code/stackblur.cpp
+// See http://vitiy.info/stackblur-algorithm-multi-threaded-blur-for-cpp/
+// Stack Blur Algorithm by Mario Klingemann <mario@quasimondo.com>
+
+static unsigned short const stackblur_mul[255] = {
+    512, 512, 456, 512, 328, 456, 335, 512, 405, 328, 271, 456, 388, 335, 292, 512,
+    454, 405, 364, 328, 298, 271, 496, 456, 420, 388, 360, 335, 312, 292, 273, 512,
+    482, 454, 428, 405, 383, 364, 345, 328, 312, 298, 284, 271, 259, 496, 475, 456,
+    437, 420, 404, 388, 374, 360, 347, 335, 323, 312, 302, 292, 282, 273, 265, 512,
+    497, 482, 468, 454, 441, 428, 417, 405, 394, 383, 373, 364, 354, 345, 337, 328,
+    320, 312, 305, 298, 291, 284, 278, 271, 265, 259, 507, 496, 485, 475, 465, 456,
+    446, 437, 428, 420, 412, 404, 396, 388, 381, 374, 367, 360, 354, 347, 341, 335,
+    329, 323, 318, 312, 307, 302, 297, 292, 287, 282, 278, 273, 269, 265, 261, 512,
+    505, 497, 489, 482, 475, 468, 461, 454, 447, 441, 435, 428, 422, 417, 411, 405,
+    399, 394, 389, 383, 378, 373, 368, 364, 359, 354, 350, 345, 341, 337, 332, 328,
+    324, 320, 316, 312, 309, 305, 301, 298, 294, 291, 287, 284, 281, 278, 274, 271,
+    268, 265, 262, 259, 257, 507, 501, 496, 491, 485, 480, 475, 470, 465, 460, 456,
+    451, 446, 442, 437, 433, 428, 424, 420, 416, 412, 408, 404, 400, 396, 392, 388,
+    385, 381, 377, 374, 370, 367, 363, 360, 357, 354, 350, 347, 344, 341, 338, 335,
+    332, 329, 326, 323, 320, 318, 315, 312, 310, 307, 304, 302, 299, 297, 294, 292,
+    289, 287, 285, 282, 280, 278, 275, 273, 271, 269, 267, 265, 263, 261, 259
+};
+
+static unsigned char const stackblur_shr[255] = {
+    9, 11, 12, 13, 13, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17,
+    17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 19,
+    19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20,
+    20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 21,
+    21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
+    21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22,
+    22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22,
+    22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23,
+    23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
+    23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
+    23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
+    23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+    24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+    24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+    24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+    24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24
+};
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_stack_blur_grayscale(lv_opa_t * buf, uint16_t w, uint16_t h, uint16_t r)
+{
+    stack_blur_job(buf, w, h, r, 1, 0, 1);
+    stack_blur_job(buf, w, h, r, 1, 0, 2);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void stack_blur_job(lv_opa_t * src, unsigned int w, unsigned int h, unsigned int radius, int cores, int core,
+                           int step)
+{
+    if(radius < 2 || radius > 254) {
+        /* Silently ignore bad radius */
+        return;
+    }
+
+    unsigned int x, y, xp, yp, i;
+    unsigned int sp;
+    unsigned int stack_start;
+    unsigned char * stack_ptr;
+
+    lv_opa_t * src_ptr;
+    lv_opa_t * dst_ptr;
+
+    unsigned long sum_r;
+    unsigned long sum_in_r;
+    unsigned long sum_out_r;
+
+    unsigned int wm = w - 1;
+    unsigned int hm = h - 1;
+    unsigned int stride = w;
+    unsigned int div = (radius * 2) + 1;
+    unsigned int mul_sum = stackblur_mul[radius];
+    unsigned char shr_sum = stackblur_shr[radius];
+    unsigned char stack[254 * 2 + 1];
+
+    if(step == 1) {
+        unsigned int minY = core * h / cores;
+        unsigned int maxY = (core + 1) * h / cores;
+
+        for(y = minY; y < maxY; y++) {
+            sum_r =
+                sum_in_r =
+                    sum_out_r = 0;
+
+            src_ptr = src + stride * y; // start of line (0,y)
+
+            for(i = 0; i <= radius; i++) {
+                stack_ptr = &stack[i];
+                stack_ptr[0] = src_ptr[0];
+                sum_r += src_ptr[0] * (i + 1);
+                sum_out_r += src_ptr[0];
+            }
+
+
+            for(i = 1; i <= radius; i++) {
+                if(i <= wm) src_ptr += 1;
+                stack_ptr = &stack[i + radius];
+                stack_ptr[0] = src_ptr[0];
+                sum_r += src_ptr[0] * (radius + 1 - i);
+                sum_in_r += src_ptr[0];
+            }
+
+
+            sp = radius;
+            xp = radius;
+            if(xp > wm) xp = wm;
+            src_ptr = src + (xp + y * w); //   img.pix_ptr(xp, y);
+            dst_ptr = src + y * stride; // img.pix_ptr(0, y);
+            for(x = 0; x < w; x++) {
+                dst_ptr[0] = LV_CLAMP((sum_r * mul_sum) >> shr_sum, 0, 255);
+                dst_ptr += 1;
+
+                sum_r -= sum_out_r;
+
+                stack_start = sp + div - radius;
+                if(stack_start >= div) stack_start -= div;
+                stack_ptr = &stack[stack_start];
+
+                sum_out_r -= stack_ptr[0];
+
+                if(xp < wm) {
+                    src_ptr += 1;
+                    ++xp;
+                }
+
+                stack_ptr[0] = src_ptr[0];
+
+                sum_in_r += src_ptr[0];
+                sum_r += sum_in_r;
+
+                ++sp;
+                if(sp >= div) sp = 0;
+                stack_ptr = &stack[sp];
+
+                sum_out_r += stack_ptr[0];
+                sum_in_r -= stack_ptr[0];
+            }
+
+        }
+    }
+
+    // step 2
+    if(step == 2) {
+        unsigned int minX = core * w / cores;
+        unsigned int maxX = (core + 1) * w / cores;
+
+        for(x = minX; x < maxX; x++) {
+            sum_r =
+                sum_in_r =
+                    sum_out_r = 0;
+
+            src_ptr = src + x; // x,0
+            for(i = 0; i <= radius; i++) {
+                stack_ptr = &stack[i];
+                stack_ptr[0] = src_ptr[0];
+                sum_r += src_ptr[0] * (i + 1);
+                sum_out_r += src_ptr[0];
+            }
+            for(i = 1; i <= radius; i++) {
+                if(i <= hm) src_ptr += stride;  // +stride
+
+                stack_ptr = &stack[i + radius];
+                stack_ptr[0] = src_ptr[0];
+                sum_r += src_ptr[0] * (radius + 1 - i);
+                sum_in_r += src_ptr[0];
+            }
+
+            sp = radius;
+            yp = radius;
+            if(yp > hm) yp = hm;
+            src_ptr = src + (x + yp * w); // img.pix_ptr(x, yp);
+            dst_ptr = src + x;               // img.pix_ptr(x, 0);
+            for(y = 0; y < h; y++) {
+                dst_ptr[0] = LV_CLAMP((sum_r * mul_sum) >> shr_sum, 0, 255);
+                dst_ptr += stride;
+
+                sum_r -= sum_out_r;
+
+                stack_start = sp + div - radius;
+                if(stack_start >= div) stack_start -= div;
+                stack_ptr = &stack[stack_start];
+
+                sum_out_r -= stack_ptr[0];
+
+                if(yp < hm) {
+                    src_ptr += stride; // stride
+                    ++yp;
+                }
+
+                stack_ptr[0] = src_ptr[0];
+
+                sum_in_r += src_ptr[0];
+                sum_r += sum_in_r;
+
+                ++sp;
+                if(sp >= div) sp = 0;
+                stack_ptr = &stack[sp];
+
+                sum_out_r += stack_ptr[0];
+                sum_in_r -= stack_ptr[0];
+            }
+        }
+    }
+}
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_stack_blur.h

@@ -0,0 +1,46 @@
+/**
+ * @file lv_draw_sdl_stack_blur.h
+ *
+ */
+#ifndef LV_DRAW_SDL_STACK_BLUR_H
+#define LV_DRAW_SDL_STACK_BLUR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "../../misc/lv_color.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void lv_stack_blur_grayscale(lv_opa_t * buf, uint16_t w, uint16_t h, uint16_t r);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_GPU_SDL*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SDL_STACK_BLUR_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_texture_cache.c

@@ -0,0 +1,178 @@
+/**
+ * @file lv_draw_sdl_texture_cache.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "lv_draw_sdl_texture_cache.h"
+
+#include "lv_draw_sdl_utils.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    SDL_Texture * texture;
+    void * userdata;
+    lv_lru_free_t * userdata_free;
+    lv_draw_sdl_cache_flag_t flags;
+} draw_cache_value_t;
+
+typedef struct {
+    lv_sdl_cache_key_magic_t magic;
+} temp_texture_key_t;
+
+typedef struct {
+    lv_coord_t width, height;
+} temp_texture_userdata_t;
+
+static void draw_cache_free_value(draw_cache_value_t *);
+
+static draw_cache_value_t * draw_cache_get_entry(lv_draw_sdl_ctx_t * ctx, const void * key, size_t key_length,
+                                                 bool * found);
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_sdl_texture_cache_init(lv_draw_sdl_ctx_t * ctx)
+{
+    ctx->internals->texture_cache = lv_lru_create(LV_GPU_SDL_LRU_SIZE, 65536,
+                                                  (lv_lru_free_t *) draw_cache_free_value, NULL);
+}
+
+void lv_draw_sdl_texture_cache_deinit(lv_draw_sdl_ctx_t * ctx)
+{
+    lv_lru_del(ctx->internals->texture_cache);
+}
+
+SDL_Texture * lv_draw_sdl_texture_cache_get(lv_draw_sdl_ctx_t * ctx, const void * key, size_t key_length, bool * found)
+{
+    return lv_draw_sdl_texture_cache_get_with_userdata(ctx, key, key_length, found, NULL);
+}
+
+SDL_Texture * lv_draw_sdl_texture_cache_get_with_userdata(lv_draw_sdl_ctx_t * ctx, const void * key, size_t key_length,
+                                                          bool * found, void ** userdata)
+{
+    draw_cache_value_t * value = draw_cache_get_entry(ctx, key, key_length, found);
+    if(!value) return NULL;
+    if(userdata) {
+        *userdata = value->userdata;
+    }
+    return value->texture;
+}
+
+void lv_draw_sdl_texture_cache_put(lv_draw_sdl_ctx_t * ctx, const void * key, size_t key_length, SDL_Texture * texture)
+{
+    lv_draw_sdl_texture_cache_put_advanced(ctx, key, key_length, texture, NULL, NULL, 0);
+}
+
+void lv_draw_sdl_texture_cache_put_advanced(lv_draw_sdl_ctx_t * ctx, const void * key, size_t key_length,
+                                            SDL_Texture * texture, void * userdata, void userdata_free(void *),
+                                            lv_draw_sdl_cache_flag_t flags)
+{
+    lv_lru_t * lru = ctx->internals->texture_cache;
+    draw_cache_value_t * value = SDL_malloc(sizeof(draw_cache_value_t));
+    value->texture = texture;
+    value->userdata = userdata;
+    value->userdata_free = userdata_free;
+    value->flags = flags;
+    if(!texture) {
+        lv_lru_set(lru, key, key_length, value, 1);
+        return;
+    }
+    if(flags & LV_DRAW_SDL_CACHE_FLAG_MANAGED) {
+        /* Managed texture doesn't count into cache size */
+        LV_LOG_INFO("cache texture %p", texture);
+        lv_lru_set(lru, key, key_length, value, 1);
+        return;
+    }
+    Uint32 format;
+    int access, width, height;
+    if(SDL_QueryTexture(texture, &format, &access, &width, &height) != 0) {
+        return;
+    }
+    LV_LOG_INFO("cache texture %p, %d*%d@%dbpp", texture, width, height, SDL_BITSPERPIXEL(format));
+    lv_lru_set(lru, key, key_length, value, width * height * SDL_BITSPERPIXEL(format) / 8);
+}
+
+lv_draw_sdl_cache_key_head_img_t * lv_draw_sdl_texture_img_key_create(const void * src, int32_t frame_id, size_t * size)
+{
+    lv_draw_sdl_cache_key_head_img_t header;
+    /* VERY IMPORTANT! Padding between members is uninitialized, so we have to wipe them manually */
+    SDL_memset(&header, 0, sizeof(header));
+    header.magic = LV_GPU_CACHE_KEY_MAGIC_IMG;
+    header.type = lv_img_src_get_type(src);
+    header.frame_id = frame_id;
+    void * key;
+    size_t key_size;
+    if(header.type == LV_IMG_SRC_FILE || header.type == LV_IMG_SRC_SYMBOL) {
+        size_t srclen = SDL_strlen(src);
+        key_size = sizeof(header) + srclen;
+        key = SDL_malloc(key_size);
+        SDL_memcpy(key, &header, sizeof(header));
+        /*Copy string content as key value*/
+        SDL_memcpy(key + sizeof(header), src, srclen);
+    }
+    else {
+        key_size = sizeof(header) + sizeof(void *);
+        key = SDL_malloc(key_size);
+        SDL_memcpy(key, &header, sizeof(header));
+        /*Copy address number as key value*/
+        SDL_memcpy(key + sizeof(header), &src, sizeof(void *));
+    }
+    *size = key_size;
+    return (lv_draw_sdl_cache_key_head_img_t *) key;
+}
+
+static void draw_cache_free_value(draw_cache_value_t * value)
+{
+    if(value->texture && !(value->flags & LV_DRAW_SDL_CACHE_FLAG_MANAGED)) {
+        LV_LOG_INFO("destroy texture %p", value->texture);
+        SDL_DestroyTexture(value->texture);
+    }
+    if(value->userdata_free) {
+        value->userdata_free(value->userdata);
+    }
+    SDL_free(value);
+}
+
+static draw_cache_value_t * draw_cache_get_entry(lv_draw_sdl_ctx_t * ctx, const void * key, size_t key_length,
+                                                 bool * found)
+{
+    lv_lru_t * lru = ctx->internals->texture_cache;
+    draw_cache_value_t * value = NULL;
+    lv_lru_get(lru, key, key_length, (void **) &value);
+    if(!value) {
+        if(found) {
+            *found = false;
+        }
+        return NULL;
+    }
+    if(found) {
+        *found = true;
+    }
+    return value;
+}
+
+#endif /*LV_USE_GPU_SDL*/
+

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_texture_cache.h

@@ -0,0 +1,102 @@
+/**
+ * @file lv_draw_sdl_texture_cache.h
+ *
+ */
+
+#ifndef LV_DRAW_SDL_TEXTURE_CACHE_H
+#define LV_DRAW_SDL_TEXTURE_CACHE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include LV_GPU_SDL_INCLUDE_PATH
+#include "lv_draw_sdl.h"
+#include "lv_draw_sdl_priv.h"
+#include "../../draw/lv_img_decoder.h"
+#include "../../misc/lv_area.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+#define LV_DRAW_SDL_DEC_DSC_TEXTURE_HEAD "@LVSDLTex"
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    char head[8];
+    SDL_Texture * texture;
+    SDL_Rect rect;
+    bool texture_managed;
+    bool texture_referenced;
+} lv_draw_sdl_dec_dsc_userdata_t;
+
+typedef enum {
+    LV_GPU_CACHE_KEY_MAGIC_ARC = 0x01,
+    LV_GPU_CACHE_KEY_MAGIC_IMG = 0x11,
+    LV_GPU_CACHE_KEY_MAGIC_IMG_ROUNDED_CORNERS = 0x12,
+    LV_GPU_CACHE_KEY_MAGIC_LINE = 0x21,
+    LV_GPU_CACHE_KEY_MAGIC_RECT_BG = 0x31,
+    LV_GPU_CACHE_KEY_MAGIC_RECT_SHADOW = 0x32,
+    LV_GPU_CACHE_KEY_MAGIC_RECT_BORDER = 0x33,
+    LV_GPU_CACHE_KEY_MAGIC_FONT_GLYPH = 0x41,
+    LV_GPU_CACHE_KEY_MAGIC_MASK = 0x51,
+} lv_sdl_cache_key_magic_t;
+
+typedef enum {
+    LV_DRAW_SDL_CACHE_FLAG_NONE = 0,
+    LV_DRAW_SDL_CACHE_FLAG_MANAGED = 1,
+} lv_draw_sdl_cache_flag_t;
+
+typedef struct {
+    lv_sdl_cache_key_magic_t magic;
+    lv_img_src_t type;
+    int32_t frame_id;
+} lv_draw_sdl_cache_key_head_img_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void lv_draw_sdl_texture_cache_init(lv_draw_sdl_ctx_t * ctx);
+
+void lv_draw_sdl_texture_cache_deinit(lv_draw_sdl_ctx_t * ctx);
+
+/**
+ * Find cached texture by key. The texture can be destroyed during usage.
+ */
+SDL_Texture * lv_draw_sdl_texture_cache_get(lv_draw_sdl_ctx_t * ctx, const void * key, size_t key_length, bool * found);
+
+SDL_Texture * lv_draw_sdl_texture_cache_get_with_userdata(lv_draw_sdl_ctx_t * ctx, const void * key, size_t key_length,
+                                                          bool * found, void ** userdata);
+
+void lv_draw_sdl_texture_cache_put(lv_draw_sdl_ctx_t * ctx, const void * key, size_t key_length, SDL_Texture * texture);
+
+void lv_draw_sdl_texture_cache_put_advanced(lv_draw_sdl_ctx_t * ctx, const void * key, size_t key_length,
+                                            SDL_Texture * texture, void * userdata, void userdata_free(void *),
+                                            lv_draw_sdl_cache_flag_t flags);
+
+lv_draw_sdl_cache_key_head_img_t * lv_draw_sdl_texture_img_key_create(const void * src, int32_t frame_id,
+                                                                      size_t * size);
+
+/**********************
+ *      MACROS
+ **********************/
+#endif /*LV_USE_GPU_SDL*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SDL_TEXTURE_CACHE_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_utils.c

@@ -0,0 +1,183 @@
+/**
+ * @file lv_draw_sdl_utils.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lv_conf_internal.h"
+
+#if LV_USE_GPU_SDL
+
+#include "lv_draw_sdl_utils.h"
+
+#include "../lv_draw.h"
+#include "../lv_draw_label.h"
+#include "../../core/lv_refr.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+extern const uint8_t _lv_bpp1_opa_table[2];
+extern const uint8_t _lv_bpp2_opa_table[4];
+extern const uint8_t _lv_bpp4_opa_table[16];
+extern const uint8_t _lv_bpp8_opa_table[256];
+
+static int utils_init_count = 0;
+static SDL_Palette * lv_sdl_palette_grayscale8 = NULL;
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void _lv_draw_sdl_utils_init()
+{
+    utils_init_count++;
+    if(utils_init_count > 1) {
+        return;
+    }
+    lv_sdl_palette_grayscale8 = lv_sdl_alloc_palette_for_bpp(_lv_bpp8_opa_table, 8);
+}
+
+void _lv_draw_sdl_utils_deinit()
+{
+    if(utils_init_count == 0) {
+        return;
+    }
+    utils_init_count--;
+    if(utils_init_count == 0) {
+        SDL_FreePalette(lv_sdl_palette_grayscale8);
+        lv_sdl_palette_grayscale8 = NULL;
+    }
+}
+
+void lv_area_to_sdl_rect(const lv_area_t * in, SDL_Rect * out)
+{
+    out->x = in->x1;
+    out->y = in->y1;
+    out->w = in->x2 - in->x1 + 1;
+    out->h = in->y2 - in->y1 + 1;
+}
+
+void lv_color_to_sdl_color(const lv_color_t * in, SDL_Color * out)
+{
+#if LV_COLOR_DEPTH == 32
+    out->a = in->ch.alpha;
+    out->r = in->ch.red;
+    out->g = in->ch.green;
+    out->b = in->ch.blue;
+#else
+    uint32_t color32 = lv_color_to32(*in);
+    lv_color32_t * color32_t = (lv_color32_t *) &color32;
+    out->a = color32_t->ch.alpha;
+    out->r = color32_t->ch.red;
+    out->g = color32_t->ch.green;
+    out->b = color32_t->ch.blue;
+#endif
+}
+
+void lv_area_zoom_to_sdl_rect(const lv_area_t * in, SDL_Rect * out, uint16_t zoom, const lv_point_t * pivot)
+{
+    if(zoom == LV_IMG_ZOOM_NONE) {
+        lv_area_to_sdl_rect(in, out);
+        return;
+    }
+    lv_area_t tmp;
+    _lv_img_buf_get_transformed_area(&tmp, lv_area_get_width(in), lv_area_get_height(in), 0, zoom, pivot);
+    lv_area_move(&tmp, in->x1, in->y1);
+    lv_area_to_sdl_rect(&tmp, out);
+}
+
+SDL_Palette * lv_sdl_alloc_palette_for_bpp(const uint8_t * mapping, uint8_t bpp)
+{
+    SDL_assert(bpp >= 1 && bpp <= 8);
+    int color_cnt = 1 << bpp;
+    SDL_Palette * result = SDL_AllocPalette(color_cnt);
+    SDL_Color palette[256];
+    for(int i = 0; i < color_cnt; i++) {
+        palette[i].r = palette[i].g = palette[i].b = 0xFF;
+        palette[i].a = mapping ? mapping[i] : i;
+    }
+    SDL_SetPaletteColors(result, palette, 0, color_cnt);
+    return result;
+}
+
+SDL_Surface * lv_sdl_create_opa_surface(lv_opa_t * opa, lv_coord_t width, lv_coord_t height, lv_coord_t stride)
+{
+    SDL_Surface * indexed = SDL_CreateRGBSurfaceFrom(opa, width, height, 8, stride, 0, 0, 0, 0);
+    SDL_SetSurfacePalette(indexed, lv_sdl_palette_grayscale8);
+    SDL_Surface * converted = SDL_ConvertSurfaceFormat(indexed, LV_DRAW_SDL_TEXTURE_FORMAT, 0);
+    SDL_FreeSurface(indexed);
+    return converted;
+}
+
+SDL_Texture * lv_sdl_create_opa_texture(SDL_Renderer * renderer, lv_opa_t * pixels, lv_coord_t width,
+                                        lv_coord_t height, lv_coord_t stride)
+{
+    SDL_Surface * indexed = lv_sdl_create_opa_surface(pixels, width, height, stride);
+    SDL_Texture * texture = SDL_CreateTextureFromSurface(renderer, indexed);
+    SDL_FreeSurface(indexed);
+    return texture;
+}
+
+void lv_sdl_to_8bpp(uint8_t * dest, const uint8_t * src, int width, int height, int stride, uint8_t bpp)
+{
+    int src_len = width * height;
+    int cur = 0;
+    int curbit;
+    uint8_t opa_mask;
+    const uint8_t * opa_table;
+    switch(bpp) {
+        case 1:
+            opa_mask = 0x1;
+            opa_table = _lv_bpp1_opa_table;
+            break;
+        case 2:
+            opa_mask = 0x4;
+            opa_table = _lv_bpp2_opa_table;
+            break;
+        case 4:
+            opa_mask = 0xF;
+            opa_table = _lv_bpp4_opa_table;
+            break;
+        case 8:
+            opa_mask = 0xFF;
+            opa_table = _lv_bpp8_opa_table;
+            break;
+        default:
+            return;
+    }
+    /* Does this work well on big endian systems? */
+    while(cur < src_len) {
+        curbit = 8 - bpp;
+        uint8_t src_byte = src[cur * bpp / 8];
+        while(curbit >= 0 && cur < src_len) {
+            uint8_t src_bits = opa_mask & (src_byte >> curbit);
+            dest[(cur / width * stride) + (cur % width)] = opa_table[src_bits];
+            curbit -= bpp;
+            cur++;
+        }
+    }
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#endif /*LV_USE_GPU_SDL*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sdl/lv_draw_sdl_utils.h

@@ -0,0 +1,65 @@
+/**
+ * @file lv_draw_sdl_utils.h
+ *
+ */
+#ifndef LV_DRAW_SDL_UTILS_H
+#define LV_DRAW_SDL_UTILS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../../lv_conf_internal.h"
+#if LV_USE_GPU_SDL
+
+#include "lv_draw_sdl.h"
+#include "../../misc/lv_color.h"
+#include "../../misc/lv_area.h"
+
+#include LV_GPU_SDL_INCLUDE_PATH
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void _lv_draw_sdl_utils_init();
+
+void _lv_draw_sdl_utils_deinit();
+
+void lv_area_to_sdl_rect(const lv_area_t * in, SDL_Rect * out);
+
+void lv_color_to_sdl_color(const lv_color_t * in, SDL_Color * out);
+
+void lv_area_zoom_to_sdl_rect(const lv_area_t * in, SDL_Rect * out, uint16_t zoom, const lv_point_t * pivot);
+
+SDL_Palette * lv_sdl_alloc_palette_for_bpp(const uint8_t * mapping, uint8_t bpp);
+
+SDL_Surface * lv_sdl_create_opa_surface(lv_opa_t * opa, lv_coord_t width, lv_coord_t height, lv_coord_t stride);
+
+SDL_Texture * lv_sdl_create_opa_texture(SDL_Renderer * renderer, lv_opa_t * pixels, lv_coord_t width,
+                                        lv_coord_t height, lv_coord_t stride);
+
+void lv_sdl_to_8bpp(uint8_t * dest, const uint8_t * src, int width, int height, int stride, uint8_t bpp);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_GPU_SDL*/
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SDL_UTILS_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/stm32_dma2d/lv_draw_stm32_dma2d.mk

@@ -0,0 +1,6 @@
+CSRCS += lv_gpu_stm32_dma2d.c
+
+DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/stm32_dma2d
+VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/stm32_dma2d
+
+CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/stm32_dma2d"

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/stm32_dma2d/lv_gpu_stm32_dma2d.c

@@ -0,0 +1,265 @@
+/**
+ * @file lv_gpu_stm32_dma2d.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_gpu_stm32_dma2d.h"
+#include "../../core/lv_refr.h"
+
+#if LV_USE_GPU_STM32_DMA2D
+
+#include LV_GPU_DMA2D_CMSIS_INCLUDE
+
+/*********************
+ *      DEFINES
+ *********************/
+
+#if LV_COLOR_16_SWAP
+    // TODO: F7 has red blue swap bit in control register for all layers and output
+    #error "Can't use DMA2D with LV_COLOR_16_SWAP 1"
+#endif
+
+#if LV_COLOR_DEPTH == 8
+    #error "Can't use DMA2D with LV_COLOR_DEPTH == 8"
+#endif
+
+#if LV_COLOR_DEPTH == 16
+    #define LV_DMA2D_COLOR_FORMAT LV_DMA2D_RGB565
+#elif LV_COLOR_DEPTH == 32
+    #define LV_DMA2D_COLOR_FORMAT LV_DMA2D_ARGB8888
+#else
+    /*Can't use GPU with other formats*/
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static void lv_draw_stm32_dma2d_blend_fill(lv_color_t * dest_buf, lv_coord_t dest_stride, const lv_area_t * fill_area,
+                                           lv_color_t color);
+
+
+static void lv_draw_stm32_dma2d_blend_map(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
+                                          const lv_color_t * src_buf, lv_coord_t src_stride, lv_opa_t opa);
+
+static void lv_draw_stm32_dma2d_img_decoded(lv_draw_ctx_t * draw, const lv_draw_img_dsc_t * dsc,
+                                            const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t color_format);
+
+
+static void invalidate_cache(void);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Turn on the peripheral and set output color mode, this only needs to be done once
+ */
+void lv_draw_stm32_dma2d_init(void)
+{
+    /*Enable DMA2D clock*/
+#if defined(STM32F4) || defined(STM32F7)
+    RCC->AHB1ENR |= RCC_AHB1ENR_DMA2DEN;
+#elif defined(STM32H7)
+    RCC->AHB3ENR |= RCC_AHB3ENR_DMA2DEN;
+#else
+# warning "LVGL can't enable the clock of DMA2D"
+#endif
+
+    /*Wait for hardware access to complete*/
+    __asm volatile("DSB\n");
+
+    /*Delay after setting peripheral clock*/
+    volatile uint32_t temp = RCC->AHB1ENR;
+    LV_UNUSED(temp);
+
+    /*set output colour mode*/
+    DMA2D->OPFCCR = LV_DMA2D_COLOR_FORMAT;
+}
+
+
+void lv_draw_stm32_dma2d_ctx_init(lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx)
+{
+
+    lv_draw_sw_init_ctx(drv, draw_ctx);
+
+    lv_draw_stm32_dma2d_ctx_t * dma2d_draw_ctx = (lv_draw_sw_ctx_t *)draw_ctx;
+
+    dma2d_draw_ctx->blend = lv_draw_stm32_dma2d_blend;
+    //    dma2d_draw_ctx->base_draw.draw_img_decoded = lv_draw_stm32_dma2d_img_decoded;
+    dma2d_draw_ctx->base_draw.wait_for_finish = lv_gpu_stm32_dma2d_wait_cb;
+    dma2d_draw_ctx->base_draw.buffer_copy = lv_draw_stm32_dma2d_buffer_copy;
+
+}
+
+void lv_draw_stm32_dma2d_ctx_deinit(lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx)
+{
+    LV_UNUSED(drv);
+    LV_UNUSED(draw_ctx);
+}
+
+
+void lv_draw_stm32_dma2d_blend(lv_draw_ctx_t * draw_ctx, const lv_draw_sw_blend_dsc_t * dsc)
+{
+    lv_area_t blend_area;
+    if(!_lv_area_intersect(&blend_area, dsc->blend_area, draw_ctx->clip_area)) return;
+
+    bool done = false;
+
+    if(dsc->mask_buf == NULL && dsc->blend_mode == LV_BLEND_MODE_NORMAL && lv_area_get_size(&blend_area) > 100) {
+        lv_coord_t dest_stride = lv_area_get_width(draw_ctx->buf_area);
+
+        lv_color_t * dest_buf = draw_ctx->buf;
+        dest_buf += dest_stride * (blend_area.y1 - draw_ctx->buf_area->y1) + (blend_area.x1 - draw_ctx->buf_area->x1);
+
+        const lv_color_t * src_buf = dsc->src_buf;
+        if(src_buf) {
+            lv_draw_sw_blend_basic(draw_ctx, dsc);
+            lv_coord_t src_stride;
+            src_stride = lv_area_get_width(dsc->blend_area);
+            src_buf += src_stride * (blend_area.y1 - dsc->blend_area->y1) + (blend_area.x1 -  dsc->blend_area->x1);
+            lv_area_move(&blend_area, -draw_ctx->buf_area->x1, -draw_ctx->buf_area->y1);
+            lv_draw_stm32_dma2d_blend_map(dest_buf, &blend_area, dest_stride, src_buf, src_stride, dsc->opa);
+            done = true;
+        }
+        else if(dsc->opa >= LV_OPA_MAX) {
+            lv_area_move(&blend_area, -draw_ctx->buf_area->x1, -draw_ctx->buf_area->y1);
+            lv_draw_stm32_dma2d_blend_fill(dest_buf, dest_stride, &blend_area, dsc->color);
+            done = true;
+        }
+    }
+
+    if(!done) lv_draw_sw_blend_basic(draw_ctx, dsc);
+}
+
+void lv_draw_stm32_dma2d_buffer_copy(lv_draw_ctx_t * draw_ctx,
+                                     void * dest_buf, lv_coord_t dest_stride, const lv_area_t * dest_area,
+                                     void * src_buf, lv_coord_t src_stride, const lv_area_t * src_area)
+{
+    LV_UNUSED(draw_ctx);
+    lv_draw_stm32_dma2d_blend_map(dest_buf, dest_area, dest_stride, src_buf, src_stride, LV_OPA_MAX);
+}
+
+
+static void lv_draw_stm32_dma2d_img_decoded(lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * dsc,
+                                            const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t color_format)
+{
+    /*TODO basic ARGB8888 image can be handles here*/
+
+    lv_draw_sw_img_decoded(draw_ctx, dsc, coords, map_p, color_format);
+}
+
+static void lv_draw_stm32_dma2d_blend_fill(lv_color_t * dest_buf, lv_coord_t dest_stride, const lv_area_t * fill_area,
+                                           lv_color_t color)
+{
+    /*Simply fill an area*/
+    int32_t area_w = lv_area_get_width(fill_area);
+    int32_t area_h = lv_area_get_height(fill_area);
+    invalidate_cache();
+
+    DMA2D->CR = 0x30000;
+    DMA2D->OMAR = (uint32_t)dest_buf;
+    /*as input color mode is same as output we don't need to convert here do we?*/
+    DMA2D->OCOLR = color.full;
+    DMA2D->OOR = dest_stride - area_w;
+    DMA2D->NLR = (area_w << DMA2D_NLR_PL_Pos) | (area_h << DMA2D_NLR_NL_Pos);
+
+    /*start transfer*/
+    DMA2D->CR |= DMA2D_CR_START_Msk;
+
+}
+
+
+static void lv_draw_stm32_dma2d_blend_map(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
+                                          const lv_color_t * src_buf, lv_coord_t src_stride, lv_opa_t opa)
+{
+
+    /*Simple copy*/
+    int32_t dest_w = lv_area_get_width(dest_area);
+    int32_t dest_h = lv_area_get_height(dest_area);
+
+    invalidate_cache();
+    if(opa >= LV_OPA_MAX) {
+        DMA2D->CR = 0;
+        /*copy output colour mode, this register controls both input and output colour format*/
+        DMA2D->FGPFCCR = LV_DMA2D_COLOR_FORMAT;
+        DMA2D->FGMAR = (uint32_t)src_buf;
+        DMA2D->FGOR = src_stride - dest_w;
+        DMA2D->OMAR = (uint32_t)dest_buf;
+        DMA2D->OOR = dest_stride - dest_w;
+        DMA2D->NLR = (dest_w << DMA2D_NLR_PL_Pos) | (dest_h << DMA2D_NLR_NL_Pos);
+
+        /*start transfer*/
+        DMA2D->CR |= DMA2D_CR_START_Msk;
+    }
+    else {
+        DMA2D->CR = 0x20000;
+
+        DMA2D->BGPFCCR = LV_DMA2D_COLOR_FORMAT;
+        DMA2D->BGMAR = (uint32_t)dest_buf;
+        DMA2D->BGOR = dest_stride - dest_w;
+
+        DMA2D->FGPFCCR = (uint32_t)LV_DMA2D_COLOR_FORMAT
+                         /*alpha mode 2, replace with foreground * alpha value*/
+                         | (2 << DMA2D_FGPFCCR_AM_Pos)
+                         /*alpha value*/
+                         | (opa << DMA2D_FGPFCCR_ALPHA_Pos);
+        DMA2D->FGMAR = (uint32_t)src_buf;
+        DMA2D->FGOR = src_stride - dest_w;
+
+        DMA2D->OMAR = (uint32_t)dest_buf;
+        DMA2D->OOR = dest_stride - dest_w;
+        DMA2D->NLR = (dest_w << DMA2D_NLR_PL_Pos) | (dest_h << DMA2D_NLR_NL_Pos);
+
+        /*start transfer*/
+        DMA2D->CR |= DMA2D_CR_START_Msk;
+    }
+}
+
+void lv_gpu_stm32_dma2d_wait_cb(lv_draw_ctx_t * draw_ctx)
+{
+    lv_disp_t * disp = _lv_refr_get_disp_refreshing();
+    if(disp->driver && disp->driver->wait_cb) {
+        while(DMA2D->CR & DMA2D_CR_START_Msk) {
+            disp->driver->wait_cb(disp->driver);
+        }
+    }
+    else {
+        while(DMA2D->CR & DMA2D_CR_START_Msk);
+    }
+    lv_draw_sw_wait_for_finish(draw_ctx);
+
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void invalidate_cache(void)
+{
+    lv_disp_t * disp = _lv_refr_get_disp_refreshing();
+    if(disp->driver->clean_dcache_cb) disp->driver->clean_dcache_cb(disp->driver);
+    else {
+#if __CORTEX_M >= 0x07
+        if((SCB->CCR) & (uint32_t)SCB_CCR_DC_Msk)
+            SCB_CleanInvalidateDCache();
+#endif
+    }
+}
+
+#endif

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/stm32_dma2d/lv_gpu_stm32_dma2d.h

@@ -0,0 +1,70 @@
+/**
+ * @file lv_gpu_stm32_dma2d.h
+ *
+ */
+
+#ifndef LV_GPU_STM32_DMA2D_H
+#define LV_GPU_STM32_DMA2D_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../misc/lv_color.h"
+#include "../../hal/lv_hal_disp.h"
+#include "../sw/lv_draw_sw.h"
+
+#if LV_USE_GPU_STM32_DMA2D
+
+/*********************
+ *      DEFINES
+ *********************/
+
+#define LV_DMA2D_ARGB8888 0
+#define LV_DMA2D_RGB888 1
+#define LV_DMA2D_RGB565 2
+#define LV_DMA2D_ARGB1555 3
+#define LV_DMA2D_ARGB4444 4
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+typedef lv_draw_sw_ctx_t lv_draw_stm32_dma2d_ctx_t;
+
+struct _lv_disp_drv_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Turn on the peripheral and set output color mode, this only needs to be done once
+ */
+void lv_draw_stm32_dma2d_init(void);
+
+void lv_draw_stm32_dma2d_ctx_init(struct _lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx);
+
+void lv_draw_stm32_dma2d_ctx_deinit(struct _lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx);
+
+void lv_draw_stm32_dma2d_blend(lv_draw_ctx_t * draw_ctx, const lv_draw_sw_blend_dsc_t * dsc);
+
+void lv_draw_stm32_dma2d_buffer_copy(lv_draw_ctx_t * draw_ctx,
+                                     void * dest_buf, lv_coord_t dest_stride, const lv_area_t * dest_area,
+                                     void * src_buf, lv_coord_t src_stride, const lv_area_t * src_area);
+
+void lv_gpu_stm32_dma2d_wait_cb(lv_draw_ctx_t * draw_ctx);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif  /*LV_USE_GPU_STM32_DMA2D*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_GPU_STM32_DMA2D_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw.c

@@ -0,0 +1,108 @@
+/**
+ * @file lv_draw_sw.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_draw.h"
+#include "lv_draw_sw.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  GLOBAL PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_sw_init_ctx(lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx)
+{
+    LV_UNUSED(drv);
+
+    lv_draw_sw_ctx_t * draw_sw_ctx = (lv_draw_sw_ctx_t *) draw_ctx;
+    lv_memset_00(draw_sw_ctx, sizeof(lv_draw_sw_ctx_t));
+
+    draw_sw_ctx->base_draw.draw_arc = lv_draw_sw_arc;
+    draw_sw_ctx->base_draw.draw_rect = lv_draw_sw_rect;
+    draw_sw_ctx->base_draw.draw_bg = lv_draw_sw_bg;
+    draw_sw_ctx->base_draw.draw_letter = lv_draw_sw_letter;
+    draw_sw_ctx->base_draw.draw_img_decoded = lv_draw_sw_img_decoded;
+    draw_sw_ctx->base_draw.draw_line = lv_draw_sw_line;
+    draw_sw_ctx->base_draw.draw_polygon = lv_draw_sw_polygon;
+#if LV_DRAW_COMPLEX
+    draw_sw_ctx->base_draw.draw_transform = lv_draw_sw_transform;
+#endif
+    draw_sw_ctx->base_draw.wait_for_finish = lv_draw_sw_wait_for_finish;
+    draw_sw_ctx->base_draw.buffer_copy = lv_draw_sw_buffer_copy;
+    draw_sw_ctx->base_draw.layer_init = lv_draw_sw_layer_create;
+    draw_sw_ctx->base_draw.layer_adjust = lv_draw_sw_layer_adjust;
+    draw_sw_ctx->base_draw.layer_blend = lv_draw_sw_layer_blend;
+    draw_sw_ctx->base_draw.layer_destroy = lv_draw_sw_layer_destroy;
+    draw_sw_ctx->blend = lv_draw_sw_blend_basic;
+    draw_ctx->layer_instance_size = sizeof(lv_draw_sw_layer_ctx_t);
+}
+
+void lv_draw_sw_deinit_ctx(lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx)
+{
+    LV_UNUSED(drv);
+
+    lv_draw_sw_ctx_t * draw_sw_ctx = (lv_draw_sw_ctx_t *) draw_ctx;
+    lv_memset_00(draw_sw_ctx, sizeof(lv_draw_sw_ctx_t));
+}
+
+void lv_draw_sw_wait_for_finish(lv_draw_ctx_t * draw_ctx)
+{
+    LV_UNUSED(draw_ctx);
+    /*Nothing to wait for*/
+}
+
+void lv_draw_sw_buffer_copy(lv_draw_ctx_t * draw_ctx,
+                            void * dest_buf, lv_coord_t dest_stride, const lv_area_t * dest_area,
+                            void * src_buf, lv_coord_t src_stride, const lv_area_t * src_area)
+{
+    LV_UNUSED(draw_ctx);
+
+    lv_color_t * dest_bufc =  dest_buf;
+    lv_color_t * src_bufc =  src_buf;
+
+    /*Got the first pixel of each buffer*/
+    dest_bufc += dest_stride * dest_area->y1;
+    dest_bufc += dest_area->x1;
+
+    src_bufc += src_stride * src_area->y1;
+    src_bufc += src_area->x1;
+
+    uint32_t line_length = lv_area_get_width(dest_area) * sizeof(lv_color_t);
+    lv_coord_t y;
+    for(y = dest_area->y1; y <= dest_area->y2; y++) {
+        lv_memcpy(dest_bufc, src_bufc, line_length);
+        dest_bufc += dest_stride;
+        src_bufc += src_stride;
+    }
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw.h

@@ -0,0 +1,104 @@
+/**
+ * @file lv_draw_sw.h
+ *
+ */
+
+#ifndef LV_DRAW_SW_H
+#define LV_DRAW_SW_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_sw_blend.h"
+#include "../lv_draw.h"
+#include "../../misc/lv_area.h"
+#include "../../misc/lv_color.h"
+#include "../../hal/lv_hal_disp.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+struct _lv_disp_drv_t;
+
+typedef struct {
+    lv_draw_ctx_t base_draw;
+
+    /** Fill an area of the destination buffer with a color*/
+    void (*blend)(lv_draw_ctx_t * draw_ctx, const lv_draw_sw_blend_dsc_t * dsc);
+} lv_draw_sw_ctx_t;
+
+typedef struct {
+    lv_draw_layer_ctx_t base_draw;
+
+    uint32_t buf_size_bytes: 31;
+    uint32_t has_alpha : 1;
+} lv_draw_sw_layer_ctx_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void lv_draw_sw_init_ctx(struct _lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx);
+void lv_draw_sw_deinit_ctx(struct _lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx);
+
+void lv_draw_sw_wait_for_finish(lv_draw_ctx_t * draw_ctx);
+
+void lv_draw_sw_arc(lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center, uint16_t radius,
+                    uint16_t start_angle, uint16_t end_angle);
+
+void lv_draw_sw_rect(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
+
+void lv_draw_sw_bg(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
+void lv_draw_sw_letter(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc, const lv_point_t * pos_p,
+                       uint32_t letter);
+
+LV_ATTRIBUTE_FAST_MEM void lv_draw_sw_img_decoded(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * draw_dsc,
+                                                  const lv_area_t * coords, const uint8_t * src_buf, lv_img_cf_t cf);
+
+LV_ATTRIBUTE_FAST_MEM void lv_draw_sw_line(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc,
+                                           const lv_point_t * point1, const lv_point_t * point2);
+
+void lv_draw_sw_polygon(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc,
+                        const lv_point_t * points, uint16_t point_cnt);
+
+void lv_draw_sw_buffer_copy(lv_draw_ctx_t * draw_ctx,
+                            void * dest_buf, lv_coord_t dest_stride, const lv_area_t * dest_area,
+                            void * src_buf, lv_coord_t src_stride, const lv_area_t * src_area);
+
+void lv_draw_sw_transform(lv_draw_ctx_t * draw_ctx, const lv_area_t * dest_area, const void * src_buf,
+                          lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
+                          const lv_draw_img_dsc_t * draw_dsc, lv_img_cf_t cf, lv_color_t * cbuf, lv_opa_t * abuf);
+
+struct _lv_draw_layer_ctx_t * lv_draw_sw_layer_create(struct _lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx,
+                                                      lv_draw_layer_flags_t flags);
+
+void lv_draw_sw_layer_adjust(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
+                             lv_draw_layer_flags_t flags);
+
+void lv_draw_sw_layer_blend(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
+                            const lv_draw_img_dsc_t * draw_dsc);
+
+void lv_draw_sw_layer_destroy(lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx);
+
+/***********************
+ * GLOBAL VARIABLES
+ ***********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SW_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw.mk

@@ -0,0 +1,17 @@
+CSRCS += lv_draw_sw.c
+CSRCS += lv_draw_sw_arc.c
+CSRCS += lv_draw_sw_blend.c
+CSRCS += lv_draw_sw_dither.c
+CSRCS += lv_draw_sw_gradient.c
+CSRCS += lv_draw_sw_img.c
+CSRCS += lv_draw_sw_letter.c
+CSRCS += lv_draw_sw_line.c
+CSRCS += lv_draw_sw_polygon.c
+CSRCS += lv_draw_sw_rect.c
+CSRCS += lv_draw_sw_transform.c
+CSRCS += lv_draw_sw_layer.c
+
+DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/sw
+VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/sw
+
+CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/sw"

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_arc.c

@@ -0,0 +1,537 @@
+/**
+ * @file lv_draw_arc.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_sw.h"
+#include "../../misc/lv_math.h"
+#include "../../misc/lv_log.h"
+#include "../../misc/lv_mem.h"
+#include "../lv_draw.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define SPLIT_RADIUS_LIMIT 10  /*With radius greater than this the arc will drawn in quarters. A quarter is drawn only if there is arc in it*/
+#define SPLIT_ANGLE_GAP_LIMIT 60  /*With small gaps in the arc don't bother with splitting because there is nothing to skip.*/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+typedef struct {
+    const lv_point_t * center;
+    lv_coord_t radius;
+    uint16_t start_angle;
+    uint16_t end_angle;
+    uint16_t start_quarter;
+    uint16_t end_quarter;
+    lv_coord_t width;
+    lv_draw_rect_dsc_t * draw_dsc;
+    const lv_area_t * draw_area;
+    lv_draw_ctx_t * draw_ctx;
+} quarter_draw_dsc_t;
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+#if LV_DRAW_COMPLEX
+    static void draw_quarter_0(quarter_draw_dsc_t * q);
+    static void draw_quarter_1(quarter_draw_dsc_t * q);
+    static void draw_quarter_2(quarter_draw_dsc_t * q);
+    static void draw_quarter_3(quarter_draw_dsc_t * q);
+    static void get_rounded_area(int16_t angle, lv_coord_t radius, uint8_t thickness, lv_area_t * res_area);
+#endif /*LV_DRAW_COMPLEX*/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_sw_arc(lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center, uint16_t radius,
+                    uint16_t start_angle, uint16_t end_angle)
+{
+#if LV_DRAW_COMPLEX
+    if(dsc->opa <= LV_OPA_MIN) return;
+    if(dsc->width == 0) return;
+    if(start_angle == end_angle) return;
+
+    lv_coord_t width = dsc->width;
+    if(width > radius) width = radius;
+
+    lv_draw_rect_dsc_t cir_dsc;
+    lv_draw_rect_dsc_init(&cir_dsc);
+    cir_dsc.blend_mode = dsc->blend_mode;
+    if(dsc->img_src) {
+        cir_dsc.bg_opa = LV_OPA_TRANSP;
+        cir_dsc.bg_img_src = dsc->img_src;
+        cir_dsc.bg_img_opa = dsc->opa;
+    }
+    else {
+        cir_dsc.bg_opa = dsc->opa;
+        cir_dsc.bg_color = dsc->color;
+    }
+
+    lv_area_t area_out;
+    area_out.x1 = center->x - radius;
+    area_out.y1 = center->y - radius;
+    area_out.x2 = center->x + radius - 1;  /*-1 because the center already belongs to the left/bottom part*/
+    area_out.y2 = center->y + radius - 1;
+
+    lv_area_t area_in;
+    lv_area_copy(&area_in, &area_out);
+    area_in.x1 += dsc->width;
+    area_in.y1 += dsc->width;
+    area_in.x2 -= dsc->width;
+    area_in.y2 -= dsc->width;
+
+    /*Create inner the mask*/
+    int16_t mask_in_id = LV_MASK_ID_INV;
+    lv_draw_mask_radius_param_t mask_in_param;
+    bool mask_in_param_valid = false;
+    if(lv_area_get_width(&area_in) > 0 && lv_area_get_height(&area_in) > 0) {
+        lv_draw_mask_radius_init(&mask_in_param, &area_in, LV_RADIUS_CIRCLE, true);
+        mask_in_param_valid = true;
+        mask_in_id = lv_draw_mask_add(&mask_in_param, NULL);
+    }
+
+    lv_draw_mask_radius_param_t mask_out_param;
+    lv_draw_mask_radius_init(&mask_out_param, &area_out, LV_RADIUS_CIRCLE, false);
+    int16_t mask_out_id = lv_draw_mask_add(&mask_out_param, NULL);
+
+    /*Draw a full ring*/
+    if(start_angle + 360 == end_angle || start_angle == end_angle + 360) {
+        cir_dsc.radius = LV_RADIUS_CIRCLE;
+        lv_draw_rect(draw_ctx, &cir_dsc, &area_out);
+
+        lv_draw_mask_remove_id(mask_out_id);
+        if(mask_in_id != LV_MASK_ID_INV) lv_draw_mask_remove_id(mask_in_id);
+
+        lv_draw_mask_free_param(&mask_out_param);
+        if(mask_in_param_valid) {
+            lv_draw_mask_free_param(&mask_in_param);
+        }
+
+        return;
+    }
+
+    while(start_angle >= 360) start_angle -= 360;
+    while(end_angle >= 360) end_angle -= 360;
+
+    lv_draw_mask_angle_param_t mask_angle_param;
+    lv_draw_mask_angle_init(&mask_angle_param, center->x, center->y, start_angle, end_angle);
+    int16_t mask_angle_id = lv_draw_mask_add(&mask_angle_param, NULL);
+
+    int32_t angle_gap;
+    if(end_angle > start_angle) {
+        angle_gap = 360 - (end_angle - start_angle);
+    }
+    else {
+        angle_gap = start_angle - end_angle;
+    }
+
+    const lv_area_t * clip_area_ori = draw_ctx->clip_area;
+
+    if(angle_gap > SPLIT_ANGLE_GAP_LIMIT && radius > SPLIT_RADIUS_LIMIT) {
+        /*Handle each quarter individually and skip which is empty*/
+        quarter_draw_dsc_t q_dsc;
+        q_dsc.center = center;
+        q_dsc.radius = radius;
+        q_dsc.start_angle = start_angle;
+        q_dsc.end_angle = end_angle;
+        q_dsc.start_quarter = (start_angle / 90) & 0x3;
+        q_dsc.end_quarter = (end_angle / 90) & 0x3;
+        q_dsc.width = width;
+        q_dsc.draw_dsc = &cir_dsc;
+        q_dsc.draw_area = &area_out;
+        q_dsc.draw_ctx = draw_ctx;
+
+        draw_quarter_0(&q_dsc);
+        draw_quarter_1(&q_dsc);
+        draw_quarter_2(&q_dsc);
+        draw_quarter_3(&q_dsc);
+    }
+    else {
+        lv_draw_rect(draw_ctx, &cir_dsc, &area_out);
+    }
+
+    lv_draw_mask_free_param(&mask_angle_param);
+    lv_draw_mask_free_param(&mask_out_param);
+    if(mask_in_param_valid) {
+        lv_draw_mask_free_param(&mask_in_param);
+    }
+
+    lv_draw_mask_remove_id(mask_angle_id);
+    lv_draw_mask_remove_id(mask_out_id);
+    if(mask_in_id != LV_MASK_ID_INV) lv_draw_mask_remove_id(mask_in_id);
+
+    if(dsc->rounded) {
+
+        lv_draw_mask_radius_param_t mask_end_param;
+
+        lv_area_t round_area;
+        get_rounded_area(start_angle, radius, width, &round_area);
+        round_area.x1 += center->x;
+        round_area.x2 += center->x;
+        round_area.y1 += center->y;
+        round_area.y2 += center->y;
+        lv_area_t clip_area2;
+        if(_lv_area_intersect(&clip_area2, clip_area_ori, &round_area)) {
+            lv_draw_mask_radius_init(&mask_end_param, &round_area, LV_RADIUS_CIRCLE, false);
+            int16_t mask_end_id = lv_draw_mask_add(&mask_end_param, NULL);
+
+            draw_ctx->clip_area = &clip_area2;
+            lv_draw_rect(draw_ctx, &cir_dsc, &area_out);
+            lv_draw_mask_remove_id(mask_end_id);
+            lv_draw_mask_free_param(&mask_end_param);
+        }
+
+        get_rounded_area(end_angle, radius, width, &round_area);
+        round_area.x1 += center->x;
+        round_area.x2 += center->x;
+        round_area.y1 += center->y;
+        round_area.y2 += center->y;
+        if(_lv_area_intersect(&clip_area2, clip_area_ori, &round_area)) {
+            lv_draw_mask_radius_init(&mask_end_param, &round_area, LV_RADIUS_CIRCLE, false);
+            int16_t mask_end_id = lv_draw_mask_add(&mask_end_param, NULL);
+
+            draw_ctx->clip_area = &clip_area2;
+            lv_draw_rect(draw_ctx, &cir_dsc, &area_out);
+            lv_draw_mask_remove_id(mask_end_id);
+            lv_draw_mask_free_param(&mask_end_param);
+        }
+        draw_ctx->clip_area = clip_area_ori;
+    }
+#else
+    LV_LOG_WARN("Can't draw arc with LV_DRAW_COMPLEX == 0");
+    LV_UNUSED(center);
+    LV_UNUSED(radius);
+    LV_UNUSED(start_angle);
+    LV_UNUSED(end_angle);
+    LV_UNUSED(draw_ctx);
+    LV_UNUSED(dsc);
+#endif /*LV_DRAW_COMPLEX*/
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#if LV_DRAW_COMPLEX
+static void draw_quarter_0(quarter_draw_dsc_t * q)
+{
+    const lv_area_t * clip_area_ori = q->draw_ctx->clip_area;
+    lv_area_t quarter_area;
+
+    if(q->start_quarter == 0 && q->end_quarter == 0 && q->start_angle < q->end_angle) {
+        /*Small arc here*/
+        quarter_area.y1 = q->center->y + ((lv_trigo_sin(q->start_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+        quarter_area.x2 = q->center->x + ((lv_trigo_sin(q->start_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
+
+        quarter_area.y2 = q->center->y + ((lv_trigo_sin(q->end_angle) * q->radius) >> LV_TRIGO_SHIFT);
+        quarter_area.x1 = q->center->x + ((lv_trigo_sin(q->end_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+
+        bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+        if(ok) {
+            q->draw_ctx->clip_area = &quarter_area;
+            lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+        }
+    }
+    else if(q->start_quarter == 0 || q->end_quarter == 0) {
+        /*Start and/or end arcs here*/
+        if(q->start_quarter == 0) {
+            quarter_area.x1 = q->center->x;
+            quarter_area.y2 = q->center->y + q->radius;
+
+            quarter_area.y1 = q->center->y + ((lv_trigo_sin(q->start_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+            quarter_area.x2 = q->center->x + ((lv_trigo_sin(q->start_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
+
+            bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+            if(ok) {
+                q->draw_ctx->clip_area = &quarter_area;
+                lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+            }
+        }
+        if(q->end_quarter == 0) {
+            quarter_area.x2 = q->center->x + q->radius;
+            quarter_area.y1 = q->center->y;
+
+            quarter_area.y2 = q->center->y + ((lv_trigo_sin(q->end_angle) * q->radius) >> LV_TRIGO_SHIFT);
+            quarter_area.x1 = q->center->x + ((lv_trigo_sin(q->end_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+
+            bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+            if(ok) {
+                q->draw_ctx->clip_area = &quarter_area;
+                lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+            }
+        }
+    }
+    else if((q->start_quarter == q->end_quarter && q->start_quarter != 0 && q->end_angle < q->start_angle) ||
+            (q->start_quarter == 2 && q->end_quarter == 1) ||
+            (q->start_quarter == 3 && q->end_quarter == 2) ||
+            (q->start_quarter == 3 && q->end_quarter == 1)) {
+        /*Arc crosses here*/
+        quarter_area.x1 = q->center->x;
+        quarter_area.y1 = q->center->y;
+        quarter_area.x2 = q->center->x + q->radius;
+        quarter_area.y2 = q->center->y + q->radius;
+
+        bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+        if(ok) {
+            q->draw_ctx->clip_area = &quarter_area;
+            lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+        }
+    }
+    q->draw_ctx->clip_area = clip_area_ori;
+}
+
+static void draw_quarter_1(quarter_draw_dsc_t * q)
+{
+    const lv_area_t * clip_area_ori = q->draw_ctx->clip_area;
+    lv_area_t quarter_area;
+
+    if(q->start_quarter == 1 && q->end_quarter == 1 && q->start_angle < q->end_angle) {
+        /*Small arc here*/
+        quarter_area.y2 = q->center->y + ((lv_trigo_sin(q->start_angle) * (q->radius)) >> LV_TRIGO_SHIFT);
+        quarter_area.x2 = q->center->x + ((lv_trigo_sin(q->start_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+
+        quarter_area.y1 = q->center->y + ((lv_trigo_sin(q->end_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+        quarter_area.x1 = q->center->x + ((lv_trigo_sin(q->end_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
+
+        bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+        if(ok) {
+            q->draw_ctx->clip_area = &quarter_area;
+            lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+        }
+    }
+    else if(q->start_quarter == 1 || q->end_quarter == 1) {
+        /*Start and/or end arcs here*/
+        if(q->start_quarter == 1) {
+            quarter_area.x1 = q->center->x - q->radius;
+            quarter_area.y1 = q->center->y;
+
+            quarter_area.y2 = q->center->y + ((lv_trigo_sin(q->start_angle) * (q->radius)) >> LV_TRIGO_SHIFT);
+            quarter_area.x2 = q->center->x + ((lv_trigo_sin(q->start_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+
+            bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+            if(ok) {
+                q->draw_ctx->clip_area = &quarter_area;
+                lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+            }
+        }
+        if(q->end_quarter == 1) {
+            quarter_area.x2 = q->center->x - 1;
+            quarter_area.y2 = q->center->y + q->radius;
+
+            quarter_area.y1 = q->center->y + ((lv_trigo_sin(q->end_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+            quarter_area.x1 = q->center->x + ((lv_trigo_sin(q->end_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
+
+            bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+            if(ok) {
+                q->draw_ctx->clip_area = &quarter_area;
+                lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+            }
+        }
+    }
+    else if((q->start_quarter == q->end_quarter && q->start_quarter != 1 && q->end_angle < q->start_angle) ||
+            (q->start_quarter == 0 && q->end_quarter == 2) ||
+            (q->start_quarter == 0 && q->end_quarter == 3) ||
+            (q->start_quarter == 3 && q->end_quarter == 2)) {
+        /*Arc crosses here*/
+        quarter_area.x1 = q->center->x - q->radius;
+        quarter_area.y1 = q->center->y;
+        quarter_area.x2 = q->center->x - 1;
+        quarter_area.y2 = q->center->y + q->radius;
+
+        bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+        if(ok) {
+            q->draw_ctx->clip_area = &quarter_area;
+            lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+        }
+    }
+    q->draw_ctx->clip_area = clip_area_ori;
+}
+
+static void draw_quarter_2(quarter_draw_dsc_t * q)
+{
+    const lv_area_t * clip_area_ori = q->draw_ctx->clip_area;
+    lv_area_t quarter_area;
+
+    if(q->start_quarter == 2 && q->end_quarter == 2 && q->start_angle < q->end_angle) {
+        /*Small arc here*/
+        quarter_area.x1 = q->center->x + ((lv_trigo_sin(q->start_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
+        quarter_area.y2 = q->center->y + ((lv_trigo_sin(q->start_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+
+        quarter_area.y1 = q->center->y + ((lv_trigo_sin(q->end_angle) * q->radius) >> LV_TRIGO_SHIFT);
+        quarter_area.x2 = q->center->x + ((lv_trigo_sin(q->end_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+
+        bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+        if(ok) {
+            q->draw_ctx->clip_area = &quarter_area;
+            lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+        }
+    }
+    else if(q->start_quarter == 2 || q->end_quarter == 2) {
+        /*Start and/or end arcs here*/
+        if(q->start_quarter == 2) {
+            quarter_area.x2 = q->center->x - 1;
+            quarter_area.y1 = q->center->y - q->radius;
+
+            quarter_area.x1 = q->center->x + ((lv_trigo_sin(q->start_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
+            quarter_area.y2 = q->center->y + ((lv_trigo_sin(q->start_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+
+            bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+            if(ok) {
+                q->draw_ctx->clip_area = &quarter_area;
+                lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+            }
+        }
+        if(q->end_quarter == 2) {
+            quarter_area.x1 = q->center->x - q->radius;
+            quarter_area.y2 = q->center->y - 1;
+
+            quarter_area.x2 = q->center->x + ((lv_trigo_sin(q->end_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+            quarter_area.y1 = q->center->y + ((lv_trigo_sin(q->end_angle) * (q->radius)) >> LV_TRIGO_SHIFT);
+
+            bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+            if(ok) {
+                q->draw_ctx->clip_area = &quarter_area;
+                lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+            }
+        }
+    }
+    else if((q->start_quarter == q->end_quarter && q->start_quarter != 2 && q->end_angle < q->start_angle) ||
+            (q->start_quarter == 0 && q->end_quarter == 3) ||
+            (q->start_quarter == 1 && q->end_quarter == 3) ||
+            (q->start_quarter == 1 && q->end_quarter == 0)) {
+        /*Arc crosses here*/
+        quarter_area.x1 = q->center->x - q->radius;
+        quarter_area.y1 = q->center->y - q->radius;
+        quarter_area.x2 = q->center->x - 1;
+        quarter_area.y2 = q->center->y - 1;
+
+        bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+        if(ok) {
+            q->draw_ctx->clip_area = &quarter_area;
+            lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+        }
+    }
+    q->draw_ctx->clip_area = clip_area_ori;
+}
+
+static void draw_quarter_3(quarter_draw_dsc_t * q)
+{
+    const lv_area_t * clip_area_ori = q->draw_ctx->clip_area;
+    lv_area_t quarter_area;
+
+    if(q->start_quarter == 3 && q->end_quarter == 3 && q->start_angle < q->end_angle) {
+        /*Small arc here*/
+        quarter_area.x1 = q->center->x + ((lv_trigo_sin(q->start_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+        quarter_area.y1 = q->center->y + ((lv_trigo_sin(q->start_angle) * (q->radius)) >> LV_TRIGO_SHIFT);
+
+        quarter_area.x2 = q->center->x + ((lv_trigo_sin(q->end_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
+        quarter_area.y2 = q->center->y + ((lv_trigo_sin(q->end_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+
+        bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+        if(ok) {
+            q->draw_ctx->clip_area = &quarter_area;
+            lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+        }
+    }
+    else if(q->start_quarter == 3 || q->end_quarter == 3) {
+        /*Start and/or end arcs here*/
+        if(q->start_quarter == 3) {
+            quarter_area.x2 = q->center->x + q->radius;
+            quarter_area.y2 = q->center->y - 1;
+
+            quarter_area.x1 = q->center->x + ((lv_trigo_sin(q->start_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+            quarter_area.y1 = q->center->y + ((lv_trigo_sin(q->start_angle) * (q->radius)) >> LV_TRIGO_SHIFT);
+
+            bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+            if(ok) {
+                q->draw_ctx->clip_area = &quarter_area;
+                lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+            }
+        }
+        if(q->end_quarter == 3) {
+            quarter_area.x1 = q->center->x;
+            quarter_area.y1 = q->center->y - q->radius;
+
+            quarter_area.x2 = q->center->x + ((lv_trigo_sin(q->end_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
+            quarter_area.y2 = q->center->y + ((lv_trigo_sin(q->end_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
+
+            bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+            if(ok) {
+                q->draw_ctx->clip_area = &quarter_area;
+                lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+            }
+        }
+    }
+    else if((q->start_quarter == q->end_quarter && q->start_quarter != 3 && q->end_angle < q->start_angle) ||
+            (q->start_quarter == 2 && q->end_quarter == 0) ||
+            (q->start_quarter == 1 && q->end_quarter == 0) ||
+            (q->start_quarter == 2 && q->end_quarter == 1)) {
+        /*Arc crosses here*/
+        quarter_area.x1 = q->center->x;
+        quarter_area.y1 = q->center->y - q->radius;
+        quarter_area.x2 = q->center->x + q->radius;
+        quarter_area.y2 = q->center->y - 1;
+
+        bool ok = _lv_area_intersect(&quarter_area, &quarter_area, clip_area_ori);
+        if(ok) {
+            q->draw_ctx->clip_area = &quarter_area;
+            lv_draw_rect(q->draw_ctx, q->draw_dsc, q->draw_area);
+        }
+    }
+
+    q->draw_ctx->clip_area = clip_area_ori;
+}
+
+static void get_rounded_area(int16_t angle, lv_coord_t radius, uint8_t thickness, lv_area_t * res_area)
+{
+    const uint8_t ps = 8;
+    const uint8_t pa = 127;
+
+    int32_t thick_half = thickness / 2;
+    uint8_t thick_corr = (thickness & 0x01) ? 0 : 1;
+
+    int32_t cir_x;
+    int32_t cir_y;
+
+    cir_x = ((radius - thick_half) * lv_trigo_sin(90 - angle)) >> (LV_TRIGO_SHIFT - ps);
+    cir_y = ((radius - thick_half) * lv_trigo_sin(angle)) >> (LV_TRIGO_SHIFT - ps);
+
+    /*Actually the center of the pixel need to be calculated so apply 1/2 px offset*/
+    if(cir_x > 0) {
+        cir_x = (cir_x - pa) >> ps;
+        res_area->x1 = cir_x - thick_half + thick_corr;
+        res_area->x2 = cir_x + thick_half;
+    }
+    else {
+        cir_x = (cir_x + pa) >> ps;
+        res_area->x1 = cir_x - thick_half;
+        res_area->x2 = cir_x + thick_half - thick_corr;
+    }
+
+    if(cir_y > 0) {
+        cir_y = (cir_y - pa) >> ps;
+        res_area->y1 = cir_y - thick_half + thick_corr;
+        res_area->y2 = cir_y + thick_half;
+    }
+    else {
+        cir_y = (cir_y + pa) >> ps;
+        res_area->y1 = cir_y - thick_half;
+        res_area->y2 = cir_y + thick_half - thick_corr;
+    }
+}
+
+#endif /*LV_DRAW_COMPLEX*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_blend.h

@@ -0,0 +1,69 @@
+/**
+ * @file lv_draw_sw_blend.h
+ *
+ */
+
+#ifndef LV_DRAW_SW_BLEND_H
+#define LV_DRAW_SW_BLEND_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../misc/lv_color.h"
+#include "../../misc/lv_area.h"
+#include "../../misc/lv_style.h"
+#include "../lv_draw_mask.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+typedef struct {
+    const lv_area_t * blend_area;   /**< The area with absolute coordinates to draw on `draw_ctx->buf`
+                                     *   will be clipped to `draw_ctx->clip_area` */
+    const lv_color_t * src_buf;     /**< Pointer to an image to blend. If set `fill_color` is ignored */
+    lv_color_t color;               /**< Fill color*/
+    lv_opa_t * mask_buf;            /**< NULL if ignored, or an alpha mask to apply on `blend_area`*/
+    lv_draw_mask_res_t mask_res;    /**< The result of the previous mask operation */
+    const lv_area_t * mask_area;    /**< The area of `mask_buf` with absolute coordinates*/
+    lv_opa_t opa;                   /**< The overall opacity*/
+    lv_blend_mode_t blend_mode;     /**< E.g. LV_BLEND_MODE_ADDITIVE*/
+} lv_draw_sw_blend_dsc_t;
+
+struct _lv_draw_ctx_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Call the blend function of the `draw_ctx`.
+ * @param draw_ctx      pointer to a draw context
+ * @param dsc           pointer to an initialized blend descriptor
+ */
+void lv_draw_sw_blend(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_sw_blend_dsc_t * dsc);
+
+/**
+ * The basic blend function used with software rendering.
+ * @param draw_ctx      pointer to a draw context
+ * @param dsc           pointer to an initialized blend descriptor
+ */
+LV_ATTRIBUTE_FAST_MEM void lv_draw_sw_blend_basic(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_sw_blend_dsc_t * dsc);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SW_BLEND_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_dither.c

@@ -0,0 +1,213 @@
+/**
+ * @file lv_draw_sw_dither.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_sw_dither.h"
+#include "lv_draw_sw_gradient.h"
+#include "../../misc/lv_color.h"
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+
+#if _DITHER_GRADIENT
+
+LV_ATTRIBUTE_FAST_MEM void lv_dither_none(lv_grad_t * grad, lv_coord_t x, lv_coord_t y, lv_coord_t w)
+{
+    LV_UNUSED(x);
+    LV_UNUSED(y);
+    if(grad == NULL || grad->filled) return;
+    for(lv_coord_t i = 0; i < w; i++) {
+        grad->map[i] = lv_color_hex(grad->hmap[i].full);
+    }
+    grad->filled = 1;
+}
+
+static const uint8_t dither_ordered_threshold_matrix[8 * 8] = {
+    0,  48, 12, 60,  3, 51, 15, 63,
+    32, 16, 44, 28, 35, 19, 47, 31,
+    8,  56,  4, 52, 11, 59,  7, 55,
+    40, 24, 36, 20, 43, 27, 39, 23,
+    2,  50, 14, 62,  1, 49, 13, 61,
+    34, 18, 46, 30, 33, 17, 45, 29,
+    10, 58,  6, 54,  9, 57,  5, 53,
+    42, 26, 38, 22, 41, 25, 37, 21
+}; /* Shift by 6 to normalize */
+
+
+LV_ATTRIBUTE_FAST_MEM void lv_dither_ordered_hor(lv_grad_t * grad, lv_coord_t x, lv_coord_t y, lv_coord_t w)
+{
+    LV_UNUSED(x);
+    /* For vertical dithering, the error is spread on the next column (and not next line).
+       Since the renderer is scanline based, it's not obvious what could be used to perform the rendering efficiently.
+       The algorithm below is based on few assumptions:
+         1. An error diffusion algorithm (like Floyd Steinberg) here would be hard to implement since it means that a pixel on column n depends on the pixel on row n
+         2. Instead an ordered dithering algorithm shift the value a bit, but the influence only spread from the matrix size (used 8x8 here)
+         3. It means that a pixel i,j only depends on the value of a pixel i-7, j-7 to i,j and no other one.
+       Then we compute a complete row of ordered dither and store it in out. */
+
+    /*The apply the algorithm for this patch*/
+    for(lv_coord_t j = 0; j < w; j++) {
+        int8_t factor = dither_ordered_threshold_matrix[(y & 7) * 8 + ((j) & 7)] - 32;
+        lv_color32_t tmp = grad->hmap[LV_CLAMP(0, j - 4, grad->size)];
+        lv_color32_t t;
+        t.ch.red   = LV_CLAMP(0, tmp.ch.red + factor, 255);
+        t.ch.green = LV_CLAMP(0, tmp.ch.green + factor, 255);
+        t.ch.blue  = LV_CLAMP(0, tmp.ch.blue + factor, 255);
+
+        grad->map[j] = lv_color_hex(t.full);
+    }
+}
+LV_ATTRIBUTE_FAST_MEM void lv_dither_ordered_ver(lv_grad_t * grad, lv_coord_t x, lv_coord_t y, lv_coord_t w)
+{
+    /* For vertical dithering, the error is spread on the next column (and not next line).
+       Since the renderer is scanline based, it's not obvious what could be used to perform the rendering efficiently.
+       The algorithm below is based on few assumptions:
+         1. An error diffusion algorithm (like Floyd Steinberg) here would be hard to implement since it means that a pixel on column n depends on the pixel on row n
+         2. Instead an ordered dithering algorithm shift the value a bit, but the influence only spread from the matrix size (used 8x8 here)
+         3. It means that a pixel i,j only depends on the value of a pixel i-7, j-7 to i,j and no other one.
+       Then we compute a complete row of ordered dither and store it in out. */
+
+    /*Extract patch for working with, selected pseudo randomly*/
+    lv_color32_t tmp = grad->hmap[LV_CLAMP(0, y - 4, grad->size)];
+
+    /*The apply the algorithm for this patch*/
+    for(lv_coord_t j = 0; j < 8; j++) {
+        int8_t factor = dither_ordered_threshold_matrix[(y & 7) * 8 + ((j + x) & 7)] - 32;
+        lv_color32_t t;
+        t.ch.red   = LV_CLAMP(0, tmp.ch.red + factor, 255);
+        t.ch.green = LV_CLAMP(0, tmp.ch.green + factor, 255);
+        t.ch.blue  = LV_CLAMP(0, tmp.ch.blue + factor, 255);
+
+        grad->map[j] = lv_color_hex(t.full);
+    }
+    /*Finally fill the line*/
+    lv_coord_t j = 8;
+    for(; j < w - 8; j += 8) {
+        lv_memcpy(grad->map + j, grad->map, 8 * sizeof(*grad->map));
+    }
+    /* Prevent overwriting */
+    for(; j < w; j++) {
+        grad->map[j] = grad->map[j & 7];
+    }
+}
+
+
+#if LV_DITHER_ERROR_DIFFUSION == 1
+LV_ATTRIBUTE_FAST_MEM void lv_dither_err_diff_hor(lv_grad_t * grad, lv_coord_t xs, lv_coord_t y, lv_coord_t w)
+{
+    LV_UNUSED(xs);
+    LV_UNUSED(y);
+    LV_UNUSED(w);
+
+    /* Implement Floyd Steinberg algorithm, see https://surma.dev/things/ditherpunk/
+        Coefs are:   x 7
+                   3 5 1
+                   / 16
+        Can be implemented as:            x       (x<<3 - x)
+                              (x<<2 - x) (x<<2+x)   x
+    */
+    int coef[4] = {0, 0, 0, 0};
+#define FS_COMPUTE_ERROR(e) { coef[0] = (e<<3) - e; coef[1] = (e<<2) - e; coef[2] = (e<<2) + e; coef[3] = e; }
+#define FS_COMPONENTS(A, OP, B, C) A.ch.red = LV_CLAMP(0, A.ch.red OP B.r OP C.r, 255); A.ch.green = LV_CLAMP(0, A.ch.green OP B.g OP C.g, 255); A.ch.blue = LV_CLAMP(0, A.ch.blue OP B.b OP C.b, 255);
+#define FS_QUANT_ERROR(e, t, q) { lv_color32_t u; u.full = lv_color_to32(q); e.r = (int8_t)(t.ch.red - u.ch.red); e.g = (int8_t)(t.ch.green - u.ch.green); e.b = (int8_t)(t.ch.blue - u.ch.blue); }
+    lv_scolor24_t next_px_err = {0}, next_l = {0}, error;
+    /*First last pixel are not dithered */
+    grad->map[0] = lv_color_hex(grad->hmap[0].full);
+    for(lv_coord_t x = 1; x < grad->size - 1; x++) {
+        lv_color32_t t = grad->hmap[x];
+        lv_color_t q;
+        /*Add error term*/
+        FS_COMPONENTS(t, +, next_px_err, next_l);
+        next_l = grad->error_acc[x + 1];
+        /*Quantify*/
+        q = lv_color_hex(t.full);
+        /*Then compute error*/
+        FS_QUANT_ERROR(error, t, q);
+        /*Dither the error*/
+        FS_COMPUTE_ERROR(error.r);
+        next_px_err.r      = coef[0] >> 4;
+        grad->error_acc[x - 1].r += coef[1] >> 4;
+        grad->error_acc[x].r     += coef[2] >> 4;
+        grad->error_acc[x + 1].r = coef[3] >> 4;
+
+        FS_COMPUTE_ERROR(error.g);
+        next_px_err.g      = coef[0] >> 4;
+        grad->error_acc[x - 1].g += coef[1] >> 4;
+        grad->error_acc[x].g     += coef[2] >> 4;
+        grad->error_acc[x + 1].g = coef[3] >> 4;
+
+        FS_COMPUTE_ERROR(error.b);
+        next_px_err.b      = coef[0] >> 4;
+        grad->error_acc[x - 1].b += coef[1] >> 4;
+        grad->error_acc[x].b     += coef[2] >> 4;
+        grad->error_acc[x + 1].b = coef[3] >> 4;
+
+        grad->map[x] = q;
+    }
+    grad->map[grad->size - 1] = lv_color_hex(grad->hmap[grad->size - 1].full);
+}
+
+LV_ATTRIBUTE_FAST_MEM void lv_dither_err_diff_ver(lv_grad_t * grad, lv_coord_t xs, lv_coord_t y, lv_coord_t w)
+{
+    /* Try to implement error diffusion on a vertical gradient and an horizontal map using those tricks:
+        Since the given hi-resolution gradient (in src) is vertical, the Floyd Steinberg algorithm pass need to be rotated,
+        so we'll get this instead (from top to bottom):
+
+          A   B   C
+       1 [  ][  ][  ]
+       2 [  ][  ][  ]     Pixel A2 will spread its error on pixel A3 with coefficient 7,
+       3 [  ][  ][  ]     Pixel A2 will spread its error on pixel B1 with coefficient 3, B2 with coef 5 and B3 with coef 1
+
+       When taking into account an arbitrary pixel P(i,j), its added error diffusion term is:
+           e(i,j) = 1/16 * [ e(i-1,j) * 5 + e(i-1,j+1) * 3 + e(i-1,j-1) * 1 + e(i,j-1) * 7]
+
+       This means that the error term depends on pixel W, NW, N and SW.
+       If we consider that we are generating the error diffused gradient map from top to bottom, we can remember the previous
+       line (N, NW) in the term above. Also, we remember the (W) term too since we are computing the gradient map from left to right.
+       However, the SW term is painful for us, we can't support it (since to get it, we need its own SW term and so on).
+       Let's remove it and re-dispatch the error factor accordingly so they stays normalized:
+           e(i,j) ~= 1/16 * [ e(i-1,j) * 6 + e(i-1,j-1) * 1 + e(i,j-1) * 9]
+
+       That's the idea of this pseudo Floyd Steinberg dithering */
+#define FS_APPLY(d, s, c) d.r = (int8_t)(s.r * c) >> 4; d.g = (int8_t)(s.g * c) >> 4; d.b = (int8_t)(s.b * c) >> 4;
+#define FS_COMPONENTS3(A, OP, B, b, C, c, D, d) \
+    A.ch.red   = LV_CLAMP(0, A.ch.red   OP ((B.r * b OP C.r * c OP D.r * d) >> 4), 255); \
+    A.ch.green = LV_CLAMP(0, A.ch.green OP ((B.r * b OP C.r * c OP D.r * d) >> 4), 255); \
+    A.ch.blue  = LV_CLAMP(0, A.ch.blue  OP ((B.r * b OP C.r * c OP D.r * d) >> 4), 255);
+
+    lv_scolor24_t next_px_err, prev_l = grad->error_acc[0];
+    /*Compute the error term for the current pixel (first pixel is never dithered)*/
+    if(xs == 0) {
+        grad->map[0] = lv_color_hex(grad->hmap[y].full);
+        FS_QUANT_ERROR(next_px_err, grad->hmap[y], grad->map[0]);
+    }
+    else {
+        lv_color_t tmp = lv_color_hex(grad->hmap[y].full);
+        lv_color32_t t = grad->hmap[y];
+        FS_QUANT_ERROR(next_px_err, grad->hmap[y], tmp);
+        FS_COMPONENTS3(t, +, next_px_err, 6, prev_l, 1, grad->error_acc[0], 9);
+        grad->map[0] = lv_color_hex(t.full);
+    }
+
+    for(lv_coord_t x = 1; x < w; x++) {
+        lv_color32_t t = grad->hmap[y];
+        lv_color_t q;
+        /*Add the current error term*/
+        FS_COMPONENTS3(t, +, next_px_err, 6, prev_l, 1, grad->error_acc[x], 9);
+        prev_l = grad->error_acc[x];
+        /*Quantize and compute error term*/
+        q = lv_color_hex(t.full);
+        FS_QUANT_ERROR(next_px_err, t, q);
+        /*Store error for next line computation*/
+        grad->error_acc[x] = next_px_err;
+        grad->map[x] = q;
+    }
+}
+#endif
+#endif

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_dither.h

@@ -0,0 +1,70 @@
+/**
+ * @file lv_draw_sw_dither.h
+ *
+ */
+
+#ifndef LV_DRAW_SW_DITHER_H
+#define LV_DRAW_SW_DITHER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../core/lv_obj_pos.h"
+
+
+/*********************
+ *      DEFINES
+ *********************/
+#if LV_COLOR_DEPTH < 32 && LV_DITHER_GRADIENT == 1
+#define _DITHER_GRADIENT 1
+#else
+#define _DITHER_GRADIENT 0
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+#if _DITHER_GRADIENT
+/*A signed error color component*/
+typedef struct {
+    int8_t r, g, b;
+} lv_scolor24_t;
+
+struct _lv_gradient_cache_t;
+typedef void (*lv_dither_func_t)(struct _lv_gradient_cache_t * grad, lv_coord_t x, lv_coord_t y, lv_coord_t w);
+
+#endif
+
+
+/**********************
+ *    PROTOTYPES
+ **********************/
+#if LV_DRAW_COMPLEX
+#if _DITHER_GRADIENT
+LV_ATTRIBUTE_FAST_MEM void lv_dither_none(struct _lv_gradient_cache_t * grad, lv_coord_t x, lv_coord_t y, lv_coord_t w);
+
+LV_ATTRIBUTE_FAST_MEM void lv_dither_ordered_hor(struct _lv_gradient_cache_t * grad, const lv_coord_t xs,
+                                                 const lv_coord_t y, const lv_coord_t w);
+LV_ATTRIBUTE_FAST_MEM void lv_dither_ordered_ver(struct _lv_gradient_cache_t * grad, const lv_coord_t xs,
+                                                 const lv_coord_t y, const lv_coord_t w);
+
+#if LV_DITHER_ERROR_DIFFUSION == 1
+LV_ATTRIBUTE_FAST_MEM void lv_dither_err_diff_hor(struct _lv_gradient_cache_t * grad, const lv_coord_t xs,
+                                                  const lv_coord_t y, const lv_coord_t w);
+LV_ATTRIBUTE_FAST_MEM void lv_dither_err_diff_ver(struct _lv_gradient_cache_t * grad, const lv_coord_t xs,
+                                                  const lv_coord_t y, const lv_coord_t w);
+#endif /* LV_DITHER_ERROR_DIFFUSION */
+
+#endif /* _DITHER_GRADIENT */
+#endif
+
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_gradient.c

@@ -0,0 +1,346 @@
+/**
+ * @file lv_draw_sw_gradient.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_sw_gradient.h"
+#include "../../misc/lv_gc.h"
+#include "../../misc/lv_types.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#if _DITHER_GRADIENT
+    #define GRAD_CM(r,g,b) LV_COLOR_MAKE32(r,g,b)
+    #define GRAD_CONV(t, x) t.full = lv_color_to32(x)
+#else
+    #define GRAD_CM(r,g,b) LV_COLOR_MAKE(r,g,b)
+    #define GRAD_CONV(t, x) t = x
+#endif
+
+#undef ALIGN
+#if defined(LV_ARCH_64)
+    #define ALIGN(X)    (((X) + 7) & ~7)
+#else
+    #define ALIGN(X)    (((X) + 3) & ~3)
+#endif
+
+#if LV_GRAD_CACHE_DEF_SIZE != 0 && LV_GRAD_CACHE_DEF_SIZE < 256
+    #error "LV_GRAD_CACHE_DEF_SIZE is too small"
+#endif
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+static lv_grad_t * next_in_cache(lv_grad_t * item);
+
+typedef lv_res_t (*op_cache_t)(lv_grad_t * c, void * ctx);
+static lv_res_t iterate_cache(op_cache_t func, void * ctx, lv_grad_t ** out);
+static size_t get_cache_item_size(lv_grad_t * c);
+static lv_grad_t * allocate_item(const lv_grad_dsc_t * g, lv_coord_t w, lv_coord_t h);
+static lv_res_t find_oldest_item_life(lv_grad_t * c, void * ctx);
+static lv_res_t kill_oldest_item(lv_grad_t * c, void * ctx);
+static lv_res_t find_item(lv_grad_t * c, void * ctx);
+static void free_item(lv_grad_t * c);
+static  uint32_t compute_key(const lv_grad_dsc_t * g, lv_coord_t w, lv_coord_t h);
+
+
+/**********************
+ *   STATIC VARIABLE
+ **********************/
+static size_t    grad_cache_size = 0;
+static uint8_t * grad_cache_end = 0;
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+union void_cast {
+    const void * ptr;
+    const uint32_t value;
+};
+
+static uint32_t compute_key(const lv_grad_dsc_t * g, lv_coord_t size, lv_coord_t w)
+{
+    union void_cast v;
+    v.ptr = g;
+    return (v.value ^ size ^ (w >> 1)); /*Yes, this is correct, it's like a hash that changes if the width changes*/
+}
+
+static size_t get_cache_item_size(lv_grad_t * c)
+{
+    size_t s = ALIGN(sizeof(*c)) + ALIGN(c->alloc_size * sizeof(lv_color_t));
+#if _DITHER_GRADIENT
+    s += ALIGN(c->size * sizeof(lv_color32_t));
+#if LV_DITHER_ERROR_DIFFUSION == 1
+    s += ALIGN(c->w * sizeof(lv_scolor24_t));
+#endif
+#endif
+    return s;
+}
+
+static lv_grad_t * next_in_cache(lv_grad_t * item)
+{
+    if(grad_cache_size == 0) return NULL;
+
+    if(item == NULL)
+        return (lv_grad_t *)LV_GC_ROOT(_lv_grad_cache_mem);
+
+    size_t s = get_cache_item_size(item);
+    /*Compute the size for this cache item*/
+    if((uint8_t *)item + s >= grad_cache_end) return NULL;
+    else return (lv_grad_t *)((uint8_t *)item + s);
+}
+
+static lv_res_t iterate_cache(op_cache_t func, void * ctx, lv_grad_t ** out)
+{
+    lv_grad_t * first = next_in_cache(NULL);
+    while(first != NULL && first->life) {
+        if((*func)(first, ctx) == LV_RES_OK) {
+            if(out != NULL) *out = first;
+            return LV_RES_OK;
+        }
+        first = next_in_cache(first);
+    }
+    return LV_RES_INV;
+}
+
+static lv_res_t find_oldest_item_life(lv_grad_t * c, void * ctx)
+{
+    uint32_t * min_life = (uint32_t *)ctx;
+    if(c->life < *min_life) *min_life = c->life;
+    return LV_RES_INV;
+}
+
+static void free_item(lv_grad_t * c)
+{
+    size_t size = get_cache_item_size(c);
+    size_t next_items_size = (size_t)(grad_cache_end - (uint8_t *)c) - size;
+    grad_cache_end -= size;
+    if(next_items_size) {
+        uint8_t * old = (uint8_t *)c;
+        lv_memcpy(c, ((uint8_t *)c) + size, next_items_size);
+        /* Then need to fix all internal pointers too */
+        while((uint8_t *)c != grad_cache_end) {
+            c->map = (lv_color_t *)(((uint8_t *)c->map) - size);
+#if _DITHER_GRADIENT
+            c->hmap = (lv_color32_t *)(((uint8_t *)c->hmap) - size);
+#if LV_DITHER_ERROR_DIFFUSION == 1
+            c->error_acc = (lv_scolor24_t *)(((uint8_t *)c->error_acc) - size);
+#endif
+#endif
+            c = (lv_grad_t *)(((uint8_t *)c) + get_cache_item_size(c));
+        }
+        lv_memset_00(old + next_items_size, size);
+    }
+}
+
+static lv_res_t kill_oldest_item(lv_grad_t * c, void * ctx)
+{
+    uint32_t * min_life = (uint32_t *)ctx;
+    if(c->life == *min_life) {
+        /*Found, let's kill it*/
+        free_item(c);
+        return LV_RES_OK;
+    }
+    return LV_RES_INV;
+}
+
+static lv_res_t find_item(lv_grad_t * c, void * ctx)
+{
+    uint32_t * k = (uint32_t *)ctx;
+    if(c->key == *k) return LV_RES_OK;
+    return LV_RES_INV;
+}
+
+static lv_grad_t * allocate_item(const lv_grad_dsc_t * g, lv_coord_t w, lv_coord_t h)
+{
+    lv_coord_t size = g->dir == LV_GRAD_DIR_HOR ? w : h;
+    lv_coord_t map_size = LV_MAX(w, h); /* The map is being used horizontally (width) unless
+                                           no dithering is selected where it's used vertically */
+
+    size_t req_size = ALIGN(sizeof(lv_grad_t)) + ALIGN(map_size * sizeof(lv_color_t));
+#if _DITHER_GRADIENT
+    req_size += ALIGN(size * sizeof(lv_color32_t));
+#if LV_DITHER_ERROR_DIFFUSION == 1
+    req_size += ALIGN(w * sizeof(lv_scolor24_t));
+#endif
+#endif
+
+    size_t act_size = (size_t)(grad_cache_end - LV_GC_ROOT(_lv_grad_cache_mem));
+    lv_grad_t * item = NULL;
+    if(req_size + act_size < grad_cache_size) {
+        item = (lv_grad_t *)grad_cache_end;
+        item->not_cached = 0;
+    }
+    else {
+        /*Need to evict items from cache until we find enough space to allocate this one */
+        if(req_size <= grad_cache_size) {
+            while(act_size + req_size > grad_cache_size) {
+                uint32_t oldest_life = UINT32_MAX;
+                iterate_cache(&find_oldest_item_life, &oldest_life, NULL);
+                iterate_cache(&kill_oldest_item, &oldest_life, NULL);
+                act_size = (size_t)(grad_cache_end - LV_GC_ROOT(_lv_grad_cache_mem));
+            }
+            item = (lv_grad_t *)grad_cache_end;
+            item->not_cached = 0;
+        }
+        else {
+            /*The cache is too small. Allocate the item manually and free it later.*/
+            item = lv_mem_alloc(req_size);
+            LV_ASSERT_MALLOC(item);
+            if(item == NULL) return NULL;
+            item->not_cached = 1;
+        }
+    }
+
+    item->key = compute_key(g, size, w);
+    item->life = 1;
+    item->filled = 0;
+    item->alloc_size = map_size;
+    item->size = size;
+    if(item->not_cached) {
+        uint8_t * p = (uint8_t *)item;
+        item->map = (lv_color_t *)(p + ALIGN(sizeof(*item)));
+#if _DITHER_GRADIENT
+        item->hmap = (lv_color32_t *)(p + ALIGN(sizeof(*item)) + ALIGN(map_size * sizeof(lv_color_t)));
+#if LV_DITHER_ERROR_DIFFUSION == 1
+        item->error_acc = (lv_scolor24_t *)(p + ALIGN(sizeof(*item)) + ALIGN(size * sizeof(lv_grad_color_t)) +
+                                            ALIGN(map_size * sizeof(lv_color_t)));
+        item->w = w;
+#endif
+#endif
+    }
+    else {
+        item->map = (lv_color_t *)(grad_cache_end + ALIGN(sizeof(*item)));
+#if _DITHER_GRADIENT
+        item->hmap = (lv_color32_t *)(grad_cache_end + ALIGN(sizeof(*item)) + ALIGN(map_size * sizeof(lv_color_t)));
+#if LV_DITHER_ERROR_DIFFUSION == 1
+        item->error_acc = (lv_scolor24_t *)(grad_cache_end + ALIGN(sizeof(*item)) + ALIGN(size * sizeof(lv_grad_color_t)) +
+                                            ALIGN(map_size * sizeof(lv_color_t)));
+        item->w = w;
+#endif
+#endif
+        grad_cache_end += req_size;
+    }
+    return item;
+}
+
+
+/**********************
+ *     FUNCTIONS
+ **********************/
+void lv_gradient_free_cache(void)
+{
+    lv_mem_free(LV_GC_ROOT(_lv_grad_cache_mem));
+    LV_GC_ROOT(_lv_grad_cache_mem) = grad_cache_end = NULL;
+    grad_cache_size = 0;
+}
+
+void lv_gradient_set_cache_size(size_t max_bytes)
+{
+    lv_mem_free(LV_GC_ROOT(_lv_grad_cache_mem));
+    grad_cache_end = LV_GC_ROOT(_lv_grad_cache_mem) = lv_mem_alloc(max_bytes);
+    LV_ASSERT_MALLOC(LV_GC_ROOT(_lv_grad_cache_mem));
+    lv_memset_00(LV_GC_ROOT(_lv_grad_cache_mem), max_bytes);
+    grad_cache_size = max_bytes;
+}
+
+lv_grad_t * lv_gradient_get(const lv_grad_dsc_t * g, lv_coord_t w, lv_coord_t h)
+{
+    /* No gradient, no cache */
+    if(g->dir == LV_GRAD_DIR_NONE) return NULL;
+
+    /* Step 0: Check if the cache exist (else create it) */
+    static bool inited = false;
+    if(!inited) {
+        lv_gradient_set_cache_size(LV_GRAD_CACHE_DEF_SIZE);
+        inited = true;
+    }
+
+    /* Step 1: Search cache for the given key */
+    lv_coord_t size = g->dir == LV_GRAD_DIR_HOR ? w : h;
+    uint32_t key = compute_key(g, size, w);
+    lv_grad_t * item = NULL;
+    if(iterate_cache(&find_item, &key, &item) == LV_RES_OK) {
+        item->life++; /* Don't forget to bump the counter */
+        return item;
+    }
+
+    /* Step 2: Need to allocate an item for it */
+    item = allocate_item(g, w, h);
+    if(item == NULL) {
+        LV_LOG_WARN("Faild to allcoate item for teh gradient");
+        return item;
+    }
+
+    /* Step 3: Fill it with the gradient, as expected */
+#if _DITHER_GRADIENT
+    for(lv_coord_t i = 0; i < item->size; i++) {
+        item->hmap[i] = lv_gradient_calculate(g, item->size, i);
+    }
+#if LV_DITHER_ERROR_DIFFUSION == 1
+    lv_memset_00(item->error_acc, w * sizeof(lv_scolor24_t));
+#endif
+#else
+    for(lv_coord_t i = 0; i < item->size; i++) {
+        item->map[i] = lv_gradient_calculate(g, item->size, i);
+    }
+#endif
+
+    return item;
+}
+
+LV_ATTRIBUTE_FAST_MEM lv_grad_color_t lv_gradient_calculate(const lv_grad_dsc_t * dsc, lv_coord_t range,
+                                                            lv_coord_t frac)
+{
+    lv_grad_color_t tmp;
+    lv_color32_t one, two;
+    /*Clip out-of-bounds first*/
+    int32_t min = (dsc->stops[0].frac * range) >> 8;
+    if(frac <= min) {
+        GRAD_CONV(tmp, dsc->stops[0].color);
+        return tmp;
+    }
+
+    int32_t max = (dsc->stops[dsc->stops_count - 1].frac * range) >> 8;
+    if(frac >= max) {
+        GRAD_CONV(tmp, dsc->stops[dsc->stops_count - 1].color);
+        return tmp;
+    }
+
+    /*Find the 2 closest stop now*/
+    int32_t d = 0;
+    for(uint8_t i = 1; i < dsc->stops_count; i++) {
+        int32_t cur = (dsc->stops[i].frac * range) >> 8;
+        if(frac <= cur) {
+            one.full = lv_color_to32(dsc->stops[i - 1].color);
+            two.full = lv_color_to32(dsc->stops[i].color);
+            min = (dsc->stops[i - 1].frac * range) >> 8;
+            max = (dsc->stops[i].frac * range) >> 8;
+            d = max - min;
+            break;
+        }
+    }
+
+    LV_ASSERT(d != 0);
+
+    /*Then interpolate*/
+    frac -= min;
+    lv_opa_t mix = (frac * 255) / d;
+    lv_opa_t imix = 255 - mix;
+
+    lv_grad_color_t r = GRAD_CM(LV_UDIV255(two.ch.red * mix   + one.ch.red * imix),
+                                LV_UDIV255(two.ch.green * mix + one.ch.green * imix),
+                                LV_UDIV255(two.ch.blue * mix  + one.ch.blue * imix));
+    return r;
+}
+
+void lv_gradient_cleanup(lv_grad_t * grad)
+{
+    if(grad->not_cached) {
+        lv_mem_free(grad);
+    }
+}

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_gradient.h

@@ -0,0 +1,97 @@
+/**
+ * @file lv_draw_sw_gradient.h
+ *
+ */
+
+#ifndef LV_DRAW_SW_GRADIENT_H
+#define LV_DRAW_SW_GRADIENT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../misc/lv_color.h"
+#include "../../misc/lv_style.h"
+#include "lv_draw_sw_dither.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#if LV_GRADIENT_MAX_STOPS < 2
+#error LVGL needs at least 2 stops for gradients. Please increase the LV_GRADIENT_MAX_STOPS
+#endif
+
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+#if _DITHER_GRADIENT
+typedef lv_color32_t lv_grad_color_t;
+#else
+typedef lv_color_t lv_grad_color_t;
+#endif
+
+/** To avoid recomputing gradient for each draw operation,
+ *  it's possible to cache the computation in this structure instance.
+ *  Whenever possible, this structure is reused instead of recomputing the gradient map */
+typedef struct _lv_gradient_cache_t {
+    uint32_t        key;          /**< A discriminating key that's built from the drawing operation.
+                                   * If the key does not match, the cache item is not used */
+    uint32_t        life : 30;    /**< A life counter that's incremented on usage. Higher counter is
+                                   * less likely to be evicted from the cache */
+    uint32_t        filled : 1;   /**< Used to skip dithering in it if already done */
+    uint32_t        not_cached: 1; /**< The cache was too small so this item is not managed by the cache*/
+    lv_color_t   *  map;          /**< The computed gradient low bitdepth color map, points into the
+                                   * cache's buffer, no free needed */
+    lv_coord_t      alloc_size;   /**< The map allocated size in colors */
+    lv_coord_t      size;         /**< The computed gradient color map size, in colors */
+#if _DITHER_GRADIENT
+    lv_color32_t  * hmap;         /**< If dithering, we need to store the current, high bitdepth gradient
+                                   * map too, points to the cache's buffer, no free needed */
+#if LV_DITHER_ERROR_DIFFUSION == 1
+    lv_scolor24_t * error_acc;    /**< Error diffusion dithering algorithm requires storing the last error
+                                   * drawn, points to the cache's buffer, no free needed  */
+    lv_coord_t      w;            /**< The error array width in pixels */
+#endif
+#endif
+} lv_grad_t;
+
+
+/**********************
+ *      PROTOTYPES
+ **********************/
+/** Compute the color in the given gradient and fraction
+ *  Gradient are specified in a virtual [0-255] range, so this function scales the virtual range to the given range
+ * @param dsc       The gradient descriptor to use
+ * @param range     The range to use in computation.
+ * @param frac      The current part used in the range. frac is in [0; range]
+ */
+LV_ATTRIBUTE_FAST_MEM lv_grad_color_t lv_gradient_calculate(const lv_grad_dsc_t * dsc, lv_coord_t range,
+                                                            lv_coord_t frac);
+
+/**
+ * Set the gradient cache size
+ * @param max_bytes Max cahce size
+ */
+void lv_gradient_set_cache_size(size_t max_bytes);
+
+/** Free the gradient cache */
+void lv_gradient_free_cache(void);
+
+/** Get a gradient cache from the given parameters */
+lv_grad_t * lv_gradient_get(const lv_grad_dsc_t * gradient, lv_coord_t w, lv_coord_t h);
+
+/**
+ * Clean up the gradient item after it was get with `lv_grad_get_from_cache`.
+ * @param grad      pointer to a gradient
+ */
+void lv_gradient_cleanup(lv_grad_t * grad);
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_GRADIENT_H*/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_img.c

@@ -0,0 +1,297 @@
+/**
+ * @file lv_draw_img.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_sw.h"
+#include "../lv_img_cache.h"
+#include "../../hal/lv_hal_disp.h"
+#include "../../misc/lv_log.h"
+#include "../../core/lv_refr.h"
+#include "../../misc/lv_mem.h"
+#include "../../misc/lv_math.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define MAX_BUF_SIZE (uint32_t) lv_disp_get_hor_res(_lv_refr_get_disp_refreshing())
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+static void convert_cb(const lv_area_t * dest_area, const void * src_buf, lv_coord_t src_w, lv_coord_t src_h,
+                       lv_coord_t src_stride, const lv_draw_img_dsc_t * draw_dsc, lv_img_cf_t cf, lv_color_t * cbuf, lv_opa_t * abuf);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+
+LV_ATTRIBUTE_FAST_MEM void lv_draw_sw_img_decoded(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * draw_dsc,
+                                                  const lv_area_t * coords, const uint8_t * src_buf, lv_img_cf_t cf)
+{
+    /*Use the clip area as draw area*/
+    lv_area_t draw_area;
+    lv_area_copy(&draw_area, draw_ctx->clip_area);
+
+    bool mask_any = lv_draw_mask_is_any(&draw_area);
+    bool transform = draw_dsc->angle != 0 || draw_dsc->zoom != LV_IMG_ZOOM_NONE ? true : false;
+
+    lv_area_t blend_area;
+    lv_draw_sw_blend_dsc_t blend_dsc;
+
+    lv_memset_00(&blend_dsc, sizeof(lv_draw_sw_blend_dsc_t));
+    blend_dsc.opa = draw_dsc->opa;
+    blend_dsc.blend_mode = draw_dsc->blend_mode;
+    blend_dsc.blend_area = &blend_area;
+
+    /*The simplest case just copy the pixels into the draw_buf*/
+    if(!mask_any && !transform && cf == LV_IMG_CF_TRUE_COLOR && draw_dsc->recolor_opa == LV_OPA_TRANSP) {
+        blend_dsc.src_buf = (const lv_color_t *)src_buf;
+
+        blend_dsc.blend_area = coords;
+        lv_draw_sw_blend(draw_ctx, &blend_dsc);
+    }
+    else if(!mask_any && !transform && cf == LV_IMG_CF_ALPHA_8BIT) {
+        lv_area_t clipped_coords;
+        if(!_lv_area_intersect(&clipped_coords, coords, draw_ctx->clip_area)) return;
+
+        blend_dsc.mask_buf = (lv_opa_t *)src_buf;
+        blend_dsc.mask_area = coords;
+        blend_dsc.src_buf = NULL;
+        blend_dsc.color = draw_dsc->recolor;
+        blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+
+        blend_dsc.blend_area = coords;
+        lv_draw_sw_blend(draw_ctx, &blend_dsc);
+    }
+#if LV_COLOR_DEPTH == 16
+    else if(!mask_any && !transform && cf == LV_IMG_CF_RGB565A8 && draw_dsc->recolor_opa == LV_OPA_TRANSP) {
+        lv_coord_t src_w = lv_area_get_width(coords);
+        lv_coord_t src_h = lv_area_get_height(coords);
+        blend_dsc.src_buf = (const lv_color_t *)src_buf;
+        blend_dsc.mask_buf = (lv_opa_t *)src_buf;
+        blend_dsc.mask_buf += sizeof(lv_color_t) * src_w * src_h;
+        blend_dsc.blend_area = coords;
+        blend_dsc.mask_area = coords;
+        blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+        lv_draw_sw_blend(draw_ctx, &blend_dsc);
+    }
+#endif
+    /*In the other cases every pixel need to be checked one-by-one*/
+    else {
+        blend_area.x1 = draw_ctx->clip_area->x1;
+        blend_area.x2 = draw_ctx->clip_area->x2;
+        blend_area.y1 = draw_ctx->clip_area->y1;
+        blend_area.y2 = draw_ctx->clip_area->y2;
+
+        lv_coord_t src_w = lv_area_get_width(coords);
+        lv_coord_t src_h = lv_area_get_height(coords);
+        lv_coord_t blend_h = lv_area_get_height(&blend_area);
+        lv_coord_t blend_w = lv_area_get_width(&blend_area);
+
+        uint32_t max_buf_size = MAX_BUF_SIZE;
+        uint32_t blend_size = lv_area_get_size(&blend_area);
+        uint32_t buf_h;
+        uint32_t buf_w = blend_w;
+        if(blend_size <= max_buf_size) {
+            buf_h = blend_h;
+        }
+        else {
+            /*Round to full lines*/
+            buf_h = max_buf_size / blend_w;
+        }
+
+        /*Create buffers and masks*/
+        uint32_t buf_size = buf_w * buf_h;
+
+        lv_color_t * rgb_buf = lv_mem_buf_get(buf_size * sizeof(lv_color_t));
+        lv_opa_t * mask_buf = lv_mem_buf_get(buf_size);
+        blend_dsc.mask_buf = mask_buf;
+        blend_dsc.mask_area = &blend_area;
+        blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+        blend_dsc.src_buf = rgb_buf;
+        lv_coord_t y_last = blend_area.y2;
+        blend_area.y2 = blend_area.y1 + buf_h - 1;
+
+        lv_draw_mask_res_t mask_res_def = (cf != LV_IMG_CF_TRUE_COLOR || draw_dsc->angle ||
+                                           draw_dsc->zoom != LV_IMG_ZOOM_NONE) ?
+                                          LV_DRAW_MASK_RES_CHANGED : LV_DRAW_MASK_RES_FULL_COVER;
+        blend_dsc.mask_res = mask_res_def;
+
+        while(blend_area.y1 <= y_last) {
+            /*Apply transformations if any or separate the channels*/
+            lv_area_t transform_area;
+            lv_area_copy(&transform_area, &blend_area);
+            lv_area_move(&transform_area, -coords->x1, -coords->y1);
+            if(transform) {
+                lv_draw_transform(draw_ctx, &transform_area, src_buf, src_w, src_h, src_w,
+                                  draw_dsc, cf, rgb_buf, mask_buf);
+            }
+            else {
+                convert_cb(&transform_area, src_buf, src_w, src_h, src_w, draw_dsc, cf, rgb_buf, mask_buf);
+            }
+
+            /*Apply recolor*/
+            if(draw_dsc->recolor_opa > LV_OPA_MIN) {
+                uint16_t premult_v[3];
+                lv_opa_t recolor_opa = draw_dsc->recolor_opa;
+                lv_color_t recolor = draw_dsc->recolor;
+                lv_color_premult(recolor, recolor_opa, premult_v);
+                recolor_opa = 255 - recolor_opa;
+                uint32_t i;
+                for(i = 0; i < buf_size; i++) {
+                    rgb_buf[i] = lv_color_mix_premult(premult_v, rgb_buf[i], recolor_opa);
+                }
+            }
+#if LV_DRAW_COMPLEX
+            /*Apply the masks if any*/
+            if(mask_any) {
+                lv_coord_t y;
+                lv_opa_t * mask_buf_tmp = mask_buf;
+                for(y = blend_area.y1; y <= blend_area.y2; y++) {
+                    lv_draw_mask_res_t mask_res_line;
+                    mask_res_line = lv_draw_mask_apply(mask_buf_tmp, blend_area.x1, y, blend_w);
+
+                    if(mask_res_line == LV_DRAW_MASK_RES_TRANSP) {
+                        lv_memset_00(mask_buf_tmp, blend_w);
+                        blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+                    }
+                    else if(mask_res_line == LV_DRAW_MASK_RES_CHANGED) {
+                        blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+                    }
+                    mask_buf_tmp += blend_w;
+                }
+            }
+#endif
+
+            /*Blend*/
+            lv_draw_sw_blend(draw_ctx, &blend_dsc);
+
+            /*Go the the next lines*/
+            blend_area.y1 = blend_area.y2 + 1;
+            blend_area.y2 = blend_area.y1 + buf_h - 1;
+            if(blend_area.y2 > y_last) blend_area.y2 = y_last;
+        }
+
+        lv_mem_buf_release(mask_buf);
+        lv_mem_buf_release(rgb_buf);
+    }
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+/* Separate the image channels to RGB and Alpha to match LV_COLOR_DEPTH settings*/
+static void convert_cb(const lv_area_t * dest_area, const void * src_buf, lv_coord_t src_w, lv_coord_t src_h,
+                       lv_coord_t src_stride, const lv_draw_img_dsc_t * draw_dsc, lv_img_cf_t cf, lv_color_t * cbuf, lv_opa_t * abuf)
+{
+    LV_UNUSED(draw_dsc);
+    LV_UNUSED(src_h);
+    LV_UNUSED(src_w);
+
+    const uint8_t * src_tmp8 = (const uint8_t *)src_buf;
+    lv_coord_t y;
+    lv_coord_t x;
+
+    if(cf == LV_IMG_CF_TRUE_COLOR || cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED) {
+        uint32_t px_cnt = lv_area_get_size(dest_area);
+        lv_memset_ff(abuf, px_cnt);
+
+        src_tmp8 += (src_stride * dest_area->y1 * sizeof(lv_color_t)) + dest_area->x1 * sizeof(lv_color_t);
+        uint32_t dest_w = lv_area_get_width(dest_area);
+        uint32_t dest_w_byte = dest_w * sizeof(lv_color_t);
+
+        lv_coord_t src_stride_byte = src_stride * sizeof(lv_color_t);
+        lv_color_t * cbuf_tmp = cbuf;
+        for(y = dest_area->y1; y <= dest_area->y2; y++) {
+            lv_memcpy(cbuf_tmp, src_tmp8, dest_w_byte);
+            src_tmp8 += src_stride_byte;
+            cbuf_tmp += dest_w;
+        }
+
+        /*Make "holes" for with Chroma keying*/
+        if(cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED) {
+            uint32_t i;
+            lv_color_t chk = LV_COLOR_CHROMA_KEY;
+#if LV_COLOR_DEPTH == 8 || LV_COLOR_DEPTH == 1
+            uint8_t * cbuf_uint = (uint8_t *)cbuf;
+            uint8_t chk_v = chk.full;
+#elif LV_COLOR_DEPTH == 16
+            uint16_t * cbuf_uint = (uint16_t *)cbuf;
+            uint16_t chk_v = chk.full;
+#elif LV_COLOR_DEPTH == 32
+            uint32_t * cbuf_uint = (uint32_t *)cbuf;
+            uint32_t chk_v = chk.full;
+#endif
+            for(i = 0; i < px_cnt; i++) {
+                if(chk_v == cbuf_uint[i]) abuf[i] = 0x00;
+            }
+        }
+    }
+    else if(cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
+        src_tmp8 += (src_stride * dest_area->y1 * LV_IMG_PX_SIZE_ALPHA_BYTE) + dest_area->x1 * LV_IMG_PX_SIZE_ALPHA_BYTE;
+
+        lv_coord_t src_new_line_step_px = (src_stride - lv_area_get_width(dest_area));
+        lv_coord_t src_new_line_step_byte = src_new_line_step_px * LV_IMG_PX_SIZE_ALPHA_BYTE;
+
+        lv_coord_t dest_h = lv_area_get_height(dest_area);
+        lv_coord_t dest_w = lv_area_get_width(dest_area);
+        for(y = 0; y < dest_h; y++) {
+            for(x = 0; x < dest_w; x++) {
+                abuf[x] = src_tmp8[LV_IMG_PX_SIZE_ALPHA_BYTE - 1];
+#if LV_COLOR_DEPTH == 8 || LV_COLOR_DEPTH == 1
+                cbuf[x].full = *src_tmp8;
+#elif LV_COLOR_DEPTH == 16
+                cbuf[x].full = *src_tmp8 + ((*(src_tmp8 + 1)) << 8);
+#elif LV_COLOR_DEPTH == 32
+                cbuf[x] = *((lv_color_t *) src_tmp8);
+                cbuf[x].ch.alpha = 0xff;
+#endif
+                src_tmp8 += LV_IMG_PX_SIZE_ALPHA_BYTE;
+
+            }
+            cbuf += dest_w;
+            abuf += dest_w;
+            src_tmp8 += src_new_line_step_byte;
+        }
+    }
+    else if(cf == LV_IMG_CF_RGB565A8) {
+        src_tmp8 += (src_stride * dest_area->y1 * sizeof(lv_color_t)) + dest_area->x1 * sizeof(lv_color_t);
+
+        lv_coord_t src_stride_byte = src_stride * sizeof(lv_color_t);
+
+        lv_coord_t dest_h = lv_area_get_height(dest_area);
+        lv_coord_t dest_w = lv_area_get_width(dest_area);
+        for(y = 0; y < dest_h; y++) {
+            lv_memcpy(cbuf, src_tmp8, dest_w * sizeof(lv_color_t));
+            cbuf += dest_w;
+            src_tmp8 += src_stride_byte;
+        }
+
+        src_tmp8 = (const uint8_t *)src_buf;
+        src_tmp8 += sizeof(lv_color_t) * src_w * src_h;
+        src_tmp8 += src_stride * dest_area->y1 + dest_area->x1;
+        for(y = 0; y < dest_h; y++) {
+            lv_memcpy(abuf, src_tmp8, dest_w);
+            abuf += dest_w;
+            src_tmp8 += src_stride;
+        }
+    }
+}

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_layer.c

@@ -0,0 +1,150 @@
+/**
+ * @file lv_draw_sw_layer.h
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_sw.h"
+#include "../../hal/lv_hal_disp.h"
+#include "../../misc/lv_area.h"
+#include "../../core/lv_refr.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *  GLOBAL VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+
+struct _lv_draw_layer_ctx_t * lv_draw_sw_layer_create(struct _lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx,
+                                                      lv_draw_layer_flags_t flags)
+{
+    if(LV_COLOR_SCREEN_TRANSP == 0 && (flags & LV_DRAW_LAYER_FLAG_HAS_ALPHA)) {
+        LV_LOG_WARN("Rendering this widget needs LV_COLOR_SCREEN_TRANSP 1");
+        return NULL;
+    }
+
+    lv_draw_sw_layer_ctx_t * layer_sw_ctx = (lv_draw_sw_layer_ctx_t *) layer_ctx;
+    uint32_t px_size = flags & LV_DRAW_LAYER_FLAG_HAS_ALPHA ? LV_IMG_PX_SIZE_ALPHA_BYTE : sizeof(lv_color_t);
+    if(flags & LV_DRAW_LAYER_FLAG_CAN_SUBDIVIDE) {
+        layer_sw_ctx->buf_size_bytes = LV_LAYER_SIMPLE_BUF_SIZE;
+        uint32_t full_size = lv_area_get_size(&layer_sw_ctx->base_draw.area_full) * px_size;
+        if(layer_sw_ctx->buf_size_bytes > full_size) layer_sw_ctx->buf_size_bytes = full_size;
+        layer_sw_ctx->base_draw.buf = lv_mem_alloc(layer_sw_ctx->buf_size_bytes);
+        if(layer_sw_ctx->base_draw.buf == NULL) {
+            LV_LOG_WARN("Cannot allocate %"LV_PRIu32" bytes for layer buffer. Allocating %"LV_PRIu32" bytes instead. (Reduced performance)",
+                        (uint32_t)layer_sw_ctx->buf_size_bytes, (uint32_t)LV_LAYER_SIMPLE_FALLBACK_BUF_SIZE * px_size);
+            layer_sw_ctx->buf_size_bytes = LV_LAYER_SIMPLE_FALLBACK_BUF_SIZE;
+            layer_sw_ctx->base_draw.buf = lv_mem_alloc(layer_sw_ctx->buf_size_bytes);
+            if(layer_sw_ctx->base_draw.buf == NULL) {
+                return NULL;
+            }
+        }
+        layer_sw_ctx->base_draw.area_act = layer_sw_ctx->base_draw.area_full;
+        layer_sw_ctx->base_draw.area_act.y2 = layer_sw_ctx->base_draw.area_full.y1;
+        lv_coord_t w = lv_area_get_width(&layer_sw_ctx->base_draw.area_act);
+        layer_sw_ctx->base_draw.max_row_with_alpha = layer_sw_ctx->buf_size_bytes / w / LV_IMG_PX_SIZE_ALPHA_BYTE;
+        layer_sw_ctx->base_draw.max_row_with_no_alpha = layer_sw_ctx->buf_size_bytes / w / sizeof(lv_color_t);
+    }
+    else {
+        layer_sw_ctx->base_draw.area_act = layer_sw_ctx->base_draw.area_full;
+        layer_sw_ctx->buf_size_bytes = lv_area_get_size(&layer_sw_ctx->base_draw.area_full) * px_size;
+        layer_sw_ctx->base_draw.buf = lv_mem_alloc(layer_sw_ctx->buf_size_bytes);
+        lv_memset_00(layer_sw_ctx->base_draw.buf, layer_sw_ctx->buf_size_bytes);
+        layer_sw_ctx->has_alpha = flags & LV_DRAW_LAYER_FLAG_HAS_ALPHA ? 1 : 0;
+        if(layer_sw_ctx->base_draw.buf == NULL) {
+            return NULL;
+        }
+
+        draw_ctx->buf = layer_sw_ctx->base_draw.buf;
+        draw_ctx->buf_area = &layer_sw_ctx->base_draw.area_act;
+        draw_ctx->clip_area = &layer_sw_ctx->base_draw.area_act;
+
+        lv_disp_t * disp_refr = _lv_refr_get_disp_refreshing();
+        disp_refr->driver->screen_transp = flags & LV_DRAW_LAYER_FLAG_HAS_ALPHA ? 1 : 0;
+    }
+
+    return layer_ctx;
+}
+
+void lv_draw_sw_layer_adjust(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
+                             lv_draw_layer_flags_t flags)
+{
+
+    lv_draw_sw_layer_ctx_t * layer_sw_ctx = (lv_draw_sw_layer_ctx_t *) layer_ctx;
+    lv_disp_t * disp_refr = _lv_refr_get_disp_refreshing();
+    if(flags & LV_DRAW_LAYER_FLAG_HAS_ALPHA) {
+        lv_memset_00(layer_ctx->buf, layer_sw_ctx->buf_size_bytes);
+        layer_sw_ctx->has_alpha = 1;
+        disp_refr->driver->screen_transp = 1;
+    }
+    else {
+        layer_sw_ctx->has_alpha = 0;
+        disp_refr->driver->screen_transp = 0;
+    }
+
+    draw_ctx->buf = layer_ctx->buf;
+    draw_ctx->buf_area = &layer_ctx->area_act;
+    draw_ctx->clip_area = &layer_ctx->area_act;
+}
+
+void lv_draw_sw_layer_blend(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
+                            const lv_draw_img_dsc_t * draw_dsc)
+{
+    lv_draw_sw_layer_ctx_t * layer_sw_ctx = (lv_draw_sw_layer_ctx_t *) layer_ctx;
+
+    lv_img_dsc_t img;
+    img.data = draw_ctx->buf;
+    img.header.always_zero = 0;
+    img.header.w = lv_area_get_width(draw_ctx->buf_area);
+    img.header.h = lv_area_get_height(draw_ctx->buf_area);
+    img.header.cf = layer_sw_ctx->has_alpha ? LV_IMG_CF_TRUE_COLOR_ALPHA : LV_IMG_CF_TRUE_COLOR;
+
+    /*Restore the original draw_ctx*/
+    draw_ctx->buf = layer_ctx->original.buf;
+    draw_ctx->buf_area = layer_ctx->original.buf_area;
+    draw_ctx->clip_area = layer_ctx->original.clip_area;
+    lv_disp_t * disp_refr = _lv_refr_get_disp_refreshing();
+    disp_refr->driver->screen_transp = layer_ctx->original.screen_transp;
+
+    /*Blend the layer*/
+    lv_draw_img(draw_ctx, draw_dsc, &layer_ctx->area_act, &img);
+    lv_draw_wait_for_finish(draw_ctx);
+    lv_img_cache_invalidate_src(&img);
+}
+
+void lv_draw_sw_layer_destroy(lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx)
+{
+    LV_UNUSED(draw_ctx);
+
+    lv_mem_free(layer_ctx->buf);
+}
+
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_letter.c

@@ -0,0 +1,573 @@
+/**
+ * @file lv_draw_sw_letter.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_sw.h"
+#include "../../hal/lv_hal_disp.h"
+#include "../../misc/lv_math.h"
+#include "../../misc/lv_assert.h"
+#include "../../misc/lv_area.h"
+#include "../../misc/lv_style.h"
+#include "../../font/lv_font.h"
+#include "../../core/lv_refr.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+LV_ATTRIBUTE_FAST_MEM static void draw_letter_normal(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,
+                                                     const lv_point_t * pos, lv_font_glyph_dsc_t * g, const uint8_t * map_p);
+
+
+#if LV_DRAW_COMPLEX && LV_USE_FONT_SUBPX
+static void draw_letter_subpx(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc, const lv_point_t * pos,
+                              lv_font_glyph_dsc_t * g, const uint8_t * map_p);
+#endif /*LV_DRAW_COMPLEX && LV_USE_FONT_SUBPX*/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *  GLOBAL VARIABLES
+ **********************/
+
+const uint8_t _lv_bpp1_opa_table[2]  = {0, 255};          /*Opacity mapping with bpp = 1 (Just for compatibility)*/
+const uint8_t _lv_bpp2_opa_table[4]  = {0, 85, 170, 255}; /*Opacity mapping with bpp = 2*/
+
+const uint8_t _lv_bpp3_opa_table[8]  = {0, 36,  73, 109,   /*Opacity mapping with bpp = 3*/
+                                        146, 182,  219, 255
+                                       };
+
+const uint8_t _lv_bpp4_opa_table[16] = {0,  17, 34,  51,  /*Opacity mapping with bpp = 4*/
+                                        68, 85, 102, 119,
+                                        136, 153, 170, 187,
+                                        204, 221, 238, 255
+                                       };
+
+const uint8_t _lv_bpp8_opa_table[256] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+                                         16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+                                         32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
+                                         48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
+                                         64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
+                                         80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
+                                         96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
+                                         112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127,
+                                         128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
+                                         144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
+                                         160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175,
+                                         176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
+                                         192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207,
+                                         208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223,
+                                         224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
+                                         240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255
+                                        };
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Draw a letter in the Virtual Display Buffer
+ * @param pos_p left-top coordinate of the latter
+ * @param mask_p the letter will be drawn only on this area  (truncated to draw_buf area)
+ * @param font_p pointer to font
+ * @param letter a letter to draw
+ * @param color color of letter
+ * @param opa opacity of letter (0..255)
+ */
+void lv_draw_sw_letter(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,  const lv_point_t * pos_p,
+                       uint32_t letter)
+{
+    lv_font_glyph_dsc_t g;
+    bool g_ret = lv_font_get_glyph_dsc(dsc->font, &g, letter, '\0');
+    if(g_ret == false) {
+        /*Add warning if the dsc is not found
+         *but do not print warning for non printable ASCII chars (e.g. '\n')*/
+        if(letter >= 0x20 &&
+           letter != 0xf8ff && /*LV_SYMBOL_DUMMY*/
+           letter != 0x200c) { /*ZERO WIDTH NON-JOINER*/
+            LV_LOG_WARN("lv_draw_letter: glyph dsc. not found for U+%" PRIX32, letter);
+
+#if LV_USE_FONT_PLACEHOLDER
+            /* draw placeholder */
+            lv_area_t glyph_coords;
+            lv_draw_rect_dsc_t glyph_dsc;
+            lv_coord_t begin_x = pos_p->x + g.ofs_x;
+            lv_coord_t begin_y = pos_p->y + g.ofs_y;
+            lv_area_set(&glyph_coords, begin_x, begin_y, begin_x + g.box_w, begin_y + g.box_h);
+            lv_draw_rect_dsc_init(&glyph_dsc);
+            glyph_dsc.bg_opa = LV_OPA_MIN;
+            glyph_dsc.outline_opa = LV_OPA_MIN;
+            glyph_dsc.shadow_opa = LV_OPA_MIN;
+            glyph_dsc.bg_img_opa = LV_OPA_MIN;
+            glyph_dsc.border_color = dsc->color;
+            glyph_dsc.border_width = 1;
+            draw_ctx->draw_rect(draw_ctx, &glyph_dsc, &glyph_coords);
+#endif
+        }
+        return;
+    }
+
+    /*Don't draw anything if the character is empty. E.g. space*/
+    if((g.box_h == 0) || (g.box_w == 0)) return;
+
+    lv_point_t gpos;
+    gpos.x = pos_p->x + g.ofs_x;
+    gpos.y = pos_p->y + (dsc->font->line_height - dsc->font->base_line) - g.box_h - g.ofs_y;
+
+    /*If the letter is completely out of mask don't draw it*/
+    if(gpos.x + g.box_w < draw_ctx->clip_area->x1 ||
+       gpos.x > draw_ctx->clip_area->x2 ||
+       gpos.y + g.box_h < draw_ctx->clip_area->y1 ||
+       gpos.y > draw_ctx->clip_area->y2)  {
+        return;
+    }
+
+    const uint8_t * map_p = lv_font_get_glyph_bitmap(g.resolved_font, letter);
+    if(map_p == NULL) {
+        LV_LOG_WARN("lv_draw_letter: character's bitmap not found");
+        return;
+    }
+
+    if(g.resolved_font->subpx) {
+#if LV_DRAW_COMPLEX && LV_USE_FONT_SUBPX
+        draw_letter_subpx(draw_ctx, dsc, &gpos, &g, map_p);
+#else
+        LV_LOG_WARN("Can't draw sub-pixel rendered letter because LV_USE_FONT_SUBPX == 0 in lv_conf.h");
+#endif
+    }
+    else {
+        draw_letter_normal(draw_ctx, dsc, &gpos, &g, map_p);
+    }
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+LV_ATTRIBUTE_FAST_MEM static void draw_letter_normal(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,
+                                                     const lv_point_t * pos, lv_font_glyph_dsc_t * g, const uint8_t * map_p)
+{
+
+    const uint8_t * bpp_opa_table_p;
+    uint32_t bitmask_init;
+    uint32_t bitmask;
+    uint32_t bpp = g->bpp;
+    lv_opa_t opa = dsc->opa;
+    uint32_t shades;
+    if(bpp == 3) bpp = 4;
+
+#if LV_USE_IMGFONT
+    if(bpp == LV_IMGFONT_BPP) { //is imgfont
+        lv_area_t fill_area;
+        fill_area.x1 = pos->x;
+        fill_area.y1 = pos->y;
+        fill_area.x2 = pos->x + g->box_w - 1;
+        fill_area.y2 = pos->y + g->box_h - 1;
+        lv_draw_img_dsc_t img_dsc;
+        lv_draw_img_dsc_init(&img_dsc);
+        img_dsc.angle = 0;
+        img_dsc.zoom = LV_IMG_ZOOM_NONE;
+        img_dsc.opa = dsc->opa;
+        img_dsc.blend_mode = dsc->blend_mode;
+        lv_draw_img(draw_ctx, &img_dsc, &fill_area, map_p);
+        return;
+    }
+#endif
+
+    switch(bpp) {
+        case 1:
+            bpp_opa_table_p = _lv_bpp1_opa_table;
+            bitmask_init  = 0x80;
+            shades = 2;
+            break;
+        case 2:
+            bpp_opa_table_p = _lv_bpp2_opa_table;
+            bitmask_init  = 0xC0;
+            shades = 4;
+            break;
+        case 4:
+            bpp_opa_table_p = _lv_bpp4_opa_table;
+            bitmask_init  = 0xF0;
+            shades = 16;
+            break;
+        case 8:
+            bpp_opa_table_p = _lv_bpp8_opa_table;
+            bitmask_init  = 0xFF;
+            shades = 256;
+            break;       /*No opa table, pixel value will be used directly*/
+        default:
+            LV_LOG_WARN("lv_draw_letter: invalid bpp");
+            return; /*Invalid bpp. Can't render the letter*/
+    }
+
+    static lv_opa_t opa_table[256];
+    static lv_opa_t prev_opa = LV_OPA_TRANSP;
+    static uint32_t prev_bpp = 0;
+    if(opa < LV_OPA_MAX) {
+        if(prev_opa != opa || prev_bpp != bpp) {
+            uint32_t i;
+            for(i = 0; i < shades; i++) {
+                opa_table[i] = bpp_opa_table_p[i] == LV_OPA_COVER ? opa : ((bpp_opa_table_p[i] * opa) >> 8);
+            }
+        }
+        bpp_opa_table_p = opa_table;
+        prev_opa = opa;
+        prev_bpp = bpp;
+    }
+
+    int32_t col, row;
+    int32_t box_w = g->box_w;
+    int32_t box_h = g->box_h;
+    int32_t width_bit = box_w * bpp; /*Letter width in bits*/
+
+    /*Calculate the col/row start/end on the map*/
+    int32_t col_start = pos->x >= draw_ctx->clip_area->x1 ? 0 : draw_ctx->clip_area->x1 - pos->x;
+    int32_t col_end   = pos->x + box_w <= draw_ctx->clip_area->x2 ? box_w : draw_ctx->clip_area->x2 - pos->x + 1;
+    int32_t row_start = pos->y >= draw_ctx->clip_area->y1 ? 0 : draw_ctx->clip_area->y1 - pos->y;
+    int32_t row_end   = pos->y + box_h <= draw_ctx->clip_area->y2 ? box_h : draw_ctx->clip_area->y2 - pos->y + 1;
+
+    /*Move on the map too*/
+    uint32_t bit_ofs = (row_start * width_bit) + (col_start * bpp);
+    map_p += bit_ofs >> 3;
+
+    uint8_t letter_px;
+    uint32_t col_bit;
+    col_bit = bit_ofs & 0x7; /*"& 0x7" equals to "% 8" just faster*/
+
+    lv_draw_sw_blend_dsc_t blend_dsc;
+    lv_memset_00(&blend_dsc, sizeof(blend_dsc));
+    blend_dsc.color = dsc->color;
+    blend_dsc.opa = dsc->opa;
+    blend_dsc.blend_mode = dsc->blend_mode;
+
+    lv_coord_t hor_res = lv_disp_get_hor_res(_lv_refr_get_disp_refreshing());
+    uint32_t mask_buf_size = box_w * box_h > hor_res ? hor_res : box_w * box_h;
+    lv_opa_t * mask_buf = lv_mem_buf_get(mask_buf_size);
+    blend_dsc.mask_buf = mask_buf;
+    int32_t mask_p = 0;
+
+    lv_area_t fill_area;
+    fill_area.x1 = col_start + pos->x;
+    fill_area.x2 = col_end  + pos->x - 1;
+    fill_area.y1 = row_start + pos->y;
+    fill_area.y2 = fill_area.y1;
+#if LV_DRAW_COMPLEX
+    lv_coord_t fill_w = lv_area_get_width(&fill_area);
+    lv_area_t mask_area;
+    lv_area_copy(&mask_area, &fill_area);
+    mask_area.y2 = mask_area.y1 + row_end;
+    bool mask_any = lv_draw_mask_is_any(&mask_area);
+#endif
+    blend_dsc.blend_area = &fill_area;
+    blend_dsc.mask_area = &fill_area;
+
+    uint32_t col_bit_max = 8 - bpp;
+    uint32_t col_bit_row_ofs = (box_w + col_start - col_end) * bpp;
+
+    for(row = row_start ; row < row_end; row++) {
+#if LV_DRAW_COMPLEX
+        int32_t mask_p_start = mask_p;
+#endif
+        bitmask = bitmask_init >> col_bit;
+        for(col = col_start; col < col_end; col++) {
+            /*Load the pixel's opacity into the mask*/
+            letter_px = (*map_p & bitmask) >> (col_bit_max - col_bit);
+            if(letter_px) {
+                mask_buf[mask_p] = bpp_opa_table_p[letter_px];
+            }
+            else {
+                mask_buf[mask_p] = 0;
+            }
+
+            /*Go to the next column*/
+            if(col_bit < col_bit_max) {
+                col_bit += bpp;
+                bitmask = bitmask >> bpp;
+            }
+            else {
+                col_bit = 0;
+                bitmask = bitmask_init;
+                map_p++;
+            }
+
+            /*Next mask byte*/
+            mask_p++;
+        }
+
+#if LV_DRAW_COMPLEX
+        /*Apply masks if any*/
+        if(mask_any) {
+            blend_dsc.mask_res = lv_draw_mask_apply(mask_buf + mask_p_start, fill_area.x1, fill_area.y2,
+                                                    fill_w);
+            if(blend_dsc.mask_res == LV_DRAW_MASK_RES_TRANSP) {
+                lv_memset_00(mask_buf + mask_p_start, fill_w);
+            }
+        }
+#endif
+
+        if((uint32_t) mask_p + (col_end - col_start) < mask_buf_size) {
+            fill_area.y2 ++;
+        }
+        else {
+            blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+            lv_draw_sw_blend(draw_ctx, &blend_dsc);
+
+            fill_area.y1 = fill_area.y2 + 1;
+            fill_area.y2 = fill_area.y1;
+            mask_p = 0;
+        }
+
+        col_bit += col_bit_row_ofs;
+        map_p += (col_bit >> 3);
+        col_bit = col_bit & 0x7;
+    }
+
+    /*Flush the last part*/
+    if(fill_area.y1 != fill_area.y2) {
+        fill_area.y2--;
+        blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+        lv_draw_sw_blend(draw_ctx, &blend_dsc);
+        mask_p = 0;
+    }
+
+    lv_mem_buf_release(mask_buf);
+}
+
+#if LV_DRAW_COMPLEX && LV_USE_FONT_SUBPX
+static void draw_letter_subpx(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc, const lv_point_t * pos,
+                              lv_font_glyph_dsc_t * g, const uint8_t * map_p)
+{
+    const uint8_t * bpp_opa_table;
+    uint32_t bitmask_init;
+    uint32_t bitmask;
+    uint32_t bpp = g->bpp;
+    lv_opa_t opa = dsc->opa;
+    if(bpp == 3) bpp = 4;
+
+    switch(bpp) {
+        case 1:
+            bpp_opa_table = _lv_bpp1_opa_table;
+            bitmask_init  = 0x80;
+            break;
+        case 2:
+            bpp_opa_table = _lv_bpp2_opa_table;
+            bitmask_init  = 0xC0;
+            break;
+        case 4:
+            bpp_opa_table = _lv_bpp4_opa_table;
+            bitmask_init  = 0xF0;
+            break;
+        case 8:
+            bpp_opa_table = _lv_bpp8_opa_table;
+            bitmask_init  = 0xFF;
+            break;       /*No opa table, pixel value will be used directly*/
+        default:
+            LV_LOG_WARN("lv_draw_letter: invalid bpp not found");
+            return; /*Invalid bpp. Can't render the letter*/
+    }
+
+    int32_t col, row;
+
+    int32_t box_w = g->box_w;
+    int32_t box_h = g->box_h;
+    int32_t width_bit = box_w * bpp; /*Letter width in bits*/
+
+    /*Calculate the col/row start/end on the map*/
+    int32_t col_start = pos->x >= draw_ctx->clip_area->x1 ? 0 : (draw_ctx->clip_area->x1 - pos->x) * 3;
+    int32_t col_end   = pos->x + box_w / 3 <= draw_ctx->clip_area->x2 ? box_w : (draw_ctx->clip_area->x2 - pos->x + 1) * 3;
+    int32_t row_start = pos->y >= draw_ctx->clip_area->y1 ? 0 : draw_ctx->clip_area->y1 - pos->y;
+    int32_t row_end   = pos->y + box_h <= draw_ctx->clip_area->y2 ? box_h : draw_ctx->clip_area->y2 - pos->y + 1;
+
+    /*Move on the map too*/
+    int32_t bit_ofs = (row_start * width_bit) + (col_start * bpp);
+    map_p += bit_ofs >> 3;
+
+    uint8_t letter_px;
+    lv_opa_t px_opa;
+    int32_t col_bit;
+    col_bit = bit_ofs & 0x7; /*"& 0x7" equals to "% 8" just faster*/
+
+    lv_area_t map_area;
+    map_area.x1 = col_start / 3 + pos->x;
+    map_area.x2 = col_end / 3  + pos->x - 1;
+    map_area.y1 = row_start + pos->y;
+    map_area.y2 = map_area.y1;
+
+    if(map_area.x2 <= map_area.x1) return;
+
+    lv_coord_t hor_res = lv_disp_get_hor_res(_lv_refr_get_disp_refreshing());
+    int32_t mask_buf_size = box_w * box_h > hor_res ? hor_res : g->box_w * g->box_h;
+    lv_opa_t * mask_buf = lv_mem_buf_get(mask_buf_size);
+    int32_t mask_p = 0;
+
+    lv_color_t * color_buf = lv_mem_buf_get(mask_buf_size * sizeof(lv_color_t));
+
+    int32_t dest_buf_stride = lv_area_get_width(draw_ctx->buf_area);
+    lv_color_t * dest_buf_tmp = draw_ctx->buf;
+
+    /*Set a pointer on draw_buf to the first pixel of the letter*/
+    dest_buf_tmp += ((pos->y - draw_ctx->buf_area->y1) * dest_buf_stride) + pos->x - draw_ctx->buf_area->x1;
+
+    /*If the letter is partially out of mask the move there on draw_buf*/
+    dest_buf_tmp += (row_start * dest_buf_stride) + col_start / 3;
+
+    lv_area_t mask_area;
+    lv_area_copy(&mask_area, &map_area);
+    mask_area.y2 = mask_area.y1 + row_end;
+    bool mask_any = lv_draw_mask_is_any(&map_area);
+    uint8_t font_rgb[3];
+
+    lv_color_t color = dsc->color;
+#if LV_COLOR_16_SWAP == 0
+    uint8_t txt_rgb[3] = {color.ch.red, color.ch.green, color.ch.blue};
+#else
+    uint8_t txt_rgb[3] = {color.ch.red, (color.ch.green_h << 3) + color.ch.green_l, color.ch.blue};
+#endif
+
+    lv_draw_sw_blend_dsc_t blend_dsc;
+    lv_memset_00(&blend_dsc, sizeof(blend_dsc));
+    blend_dsc.blend_area = &map_area;
+    blend_dsc.mask_area = &map_area;
+    blend_dsc.src_buf = color_buf;
+    blend_dsc.mask_buf = mask_buf;
+    blend_dsc.opa = opa;
+    blend_dsc.blend_mode = dsc->blend_mode;
+
+    for(row = row_start ; row < row_end; row++) {
+        uint32_t subpx_cnt = 0;
+        bitmask = bitmask_init >> col_bit;
+        int32_t mask_p_start = mask_p;
+
+        for(col = col_start; col < col_end; col++) {
+            /*Load the pixel's opacity into the mask*/
+            letter_px = (*map_p & bitmask) >> (8 - col_bit - bpp);
+            if(letter_px != 0) {
+                if(opa >= LV_OPA_MAX) {
+                    px_opa = bpp == 8 ? letter_px : bpp_opa_table[letter_px];
+                }
+                else {
+                    px_opa = bpp == 8 ? (uint32_t)((uint32_t)letter_px * opa) >> 8
+                             : (uint32_t)((uint32_t)bpp_opa_table[letter_px] * opa) >> 8;
+                }
+            }
+            else {
+                px_opa = 0;
+            }
+
+            font_rgb[subpx_cnt] = px_opa;
+
+            subpx_cnt ++;
+            if(subpx_cnt == 3) {
+                subpx_cnt = 0;
+
+                lv_color_t res_color;
+#if LV_COLOR_16_SWAP == 0
+                uint8_t bg_rgb[3] = {dest_buf_tmp->ch.red, dest_buf_tmp->ch.green, dest_buf_tmp->ch.blue};
+#else
+                uint8_t bg_rgb[3] = {dest_buf_tmp->ch.red,
+                                     (dest_buf_tmp->ch.green_h << 3) + dest_buf_tmp->ch.green_l,
+                                     dest_buf_tmp->ch.blue
+                                    };
+#endif
+
+#if LV_FONT_SUBPX_BGR
+                res_color.ch.blue = (uint32_t)((uint32_t)txt_rgb[0] * font_rgb[0] + (bg_rgb[0] * (255 - font_rgb[0]))) >> 8;
+                res_color.ch.red = (uint32_t)((uint32_t)txt_rgb[2] * font_rgb[2] + (bg_rgb[2] * (255 - font_rgb[2]))) >> 8;
+#else
+                res_color.ch.red = (uint32_t)((uint16_t)txt_rgb[0] * font_rgb[0] + (bg_rgb[0] * (255 - font_rgb[0]))) >> 8;
+                res_color.ch.blue = (uint32_t)((uint16_t)txt_rgb[2] * font_rgb[2] + (bg_rgb[2] * (255 - font_rgb[2]))) >> 8;
+#endif
+
+#if LV_COLOR_16_SWAP == 0
+                res_color.ch.green = (uint32_t)((uint32_t)txt_rgb[1] * font_rgb[1] + (bg_rgb[1] * (255 - font_rgb[1]))) >> 8;
+#else
+                uint8_t green = (uint32_t)((uint32_t)txt_rgb[1] * font_rgb[1] + (bg_rgb[1] * (255 - font_rgb[1]))) >> 8;
+                res_color.ch.green_h = green >> 3;
+                res_color.ch.green_l = green & 0x7;
+#endif
+
+#if LV_COLOR_DEPTH == 32
+                res_color.ch.alpha = 0xff;
+#endif
+
+                if(font_rgb[0] == 0 && font_rgb[1] == 0 && font_rgb[2] == 0) mask_buf[mask_p] = LV_OPA_TRANSP;
+                else mask_buf[mask_p] = LV_OPA_COVER;
+                color_buf[mask_p] = res_color;
+
+                /*Next mask byte*/
+                mask_p++;
+                dest_buf_tmp++;
+            }
+
+            /*Go to the next column*/
+            if(col_bit < (int32_t)(8 - bpp)) {
+                col_bit += bpp;
+                bitmask = bitmask >> bpp;
+            }
+            else {
+                col_bit = 0;
+                bitmask = bitmask_init;
+                map_p++;
+            }
+        }
+
+        /*Apply masks if any*/
+        if(mask_any) {
+            blend_dsc.mask_res = lv_draw_mask_apply(mask_buf + mask_p_start, map_area.x1, map_area.y2,
+                                                    lv_area_get_width(&map_area));
+            if(blend_dsc.mask_res == LV_DRAW_MASK_RES_TRANSP) {
+                lv_memset_00(mask_buf + mask_p_start, lv_area_get_width(&map_area));
+            }
+        }
+
+        if((int32_t) mask_p + (col_end - col_start) < mask_buf_size) {
+            map_area.y2 ++;
+        }
+        else {
+            blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+            lv_draw_sw_blend(draw_ctx, &blend_dsc);
+
+            map_area.y1 = map_area.y2 + 1;
+            map_area.y2 = map_area.y1;
+            mask_p = 0;
+        }
+
+        col_bit += ((box_w - col_end) + col_start) * bpp;
+
+        map_p += (col_bit >> 3);
+        col_bit = col_bit & 0x7;
+
+        /*Next row in draw_buf*/
+        dest_buf_tmp += dest_buf_stride - (col_end - col_start) / 3;
+    }
+
+    /*Flush the last part*/
+    if(map_area.y1 != map_area.y2) {
+        map_area.y2--;
+        blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+        lv_draw_sw_blend(draw_ctx, &blend_dsc);
+    }
+
+    lv_mem_buf_release(mask_buf);
+    lv_mem_buf_release(color_buf);
+}
+#endif /*LV_DRAW_COMPLEX && LV_USE_FONT_SUBPX*/
+

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_line.c

@@ -0,0 +1,443 @@
+/**
+ * @file lv_draw_line.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include <stdbool.h>
+#include "lv_draw_sw.h"
+#include "../../misc/lv_math.h"
+#include "../../core/lv_refr.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+LV_ATTRIBUTE_FAST_MEM static void draw_line_skew(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc,
+                                                 const lv_point_t * point1, const lv_point_t * point2);
+LV_ATTRIBUTE_FAST_MEM static void draw_line_hor(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc,
+                                                const lv_point_t * point1, const lv_point_t * point2);
+LV_ATTRIBUTE_FAST_MEM static void draw_line_ver(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc,
+                                                const lv_point_t * point1, const lv_point_t * point2);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Draw a line
+ * @param point1 first point of the line
+ * @param point2 second point of the line
+ * @param clip the line will be drawn only in this area
+ * @param dsc pointer to an initialized `lv_draw_line_dsc_t` variable
+ */
+LV_ATTRIBUTE_FAST_MEM void lv_draw_sw_line(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc,
+                                           const lv_point_t * point1, const lv_point_t * point2)
+{
+    if(dsc->width == 0) return;
+    if(dsc->opa <= LV_OPA_MIN) return;
+
+    if(point1->x == point2->x && point1->y == point2->y) return;
+
+    lv_area_t clip_line;
+    clip_line.x1 = LV_MIN(point1->x, point2->x) - dsc->width / 2;
+    clip_line.x2 = LV_MAX(point1->x, point2->x) + dsc->width / 2;
+    clip_line.y1 = LV_MIN(point1->y, point2->y) - dsc->width / 2;
+    clip_line.y2 = LV_MAX(point1->y, point2->y) + dsc->width / 2;
+
+    bool is_common;
+    is_common = _lv_area_intersect(&clip_line, &clip_line, draw_ctx->clip_area);
+    if(!is_common) return;
+    const lv_area_t * clip_area_ori = draw_ctx->clip_area;
+    draw_ctx->clip_area = &clip_line;
+
+    if(point1->y == point2->y) draw_line_hor(draw_ctx, dsc, point1, point2);
+    else if(point1->x == point2->x) draw_line_ver(draw_ctx, dsc, point1, point2);
+    else draw_line_skew(draw_ctx, dsc, point1, point2);
+
+    if(dsc->round_end || dsc->round_start) {
+        lv_draw_rect_dsc_t cir_dsc;
+        lv_draw_rect_dsc_init(&cir_dsc);
+        cir_dsc.bg_color = dsc->color;
+        cir_dsc.radius = LV_RADIUS_CIRCLE;
+        cir_dsc.bg_opa = dsc->opa;
+
+        int32_t r = (dsc->width >> 1);
+        int32_t r_corr = (dsc->width & 1) ? 0 : 1;
+        lv_area_t cir_area;
+
+        if(dsc->round_start) {
+            cir_area.x1 = point1->x - r;
+            cir_area.y1 = point1->y - r;
+            cir_area.x2 = point1->x + r - r_corr;
+            cir_area.y2 = point1->y + r - r_corr ;
+            lv_draw_rect(draw_ctx, &cir_dsc, &cir_area);
+        }
+
+        if(dsc->round_end) {
+            cir_area.x1 = point2->x - r;
+            cir_area.y1 = point2->y - r;
+            cir_area.x2 = point2->x + r - r_corr;
+            cir_area.y2 = point2->y + r - r_corr ;
+            lv_draw_rect(draw_ctx, &cir_dsc, &cir_area);
+        }
+    }
+
+    draw_ctx->clip_area = clip_area_ori;
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+
+LV_ATTRIBUTE_FAST_MEM static void draw_line_hor(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc,
+                                                const lv_point_t * point1, const lv_point_t * point2)
+{
+    int32_t w = dsc->width - 1;
+    int32_t w_half0 = w >> 1;
+    int32_t w_half1 = w_half0 + (w & 0x1); /*Compensate rounding error*/
+
+    lv_area_t blend_area;
+    blend_area.x1 = LV_MIN(point1->x, point2->x);
+    blend_area.x2 = LV_MAX(point1->x, point2->x)  - 1;
+    blend_area.y1 = point1->y - w_half1;
+    blend_area.y2 = point1->y + w_half0;
+
+    bool is_common;
+    is_common = _lv_area_intersect(&blend_area, &blend_area, draw_ctx->clip_area);
+    if(!is_common) return;
+
+    bool dashed = dsc->dash_gap && dsc->dash_width ? true : false;
+    bool simple_mode = true;
+    if(lv_draw_mask_is_any(&blend_area)) simple_mode = false;
+    else if(dashed) simple_mode = false;
+
+    lv_draw_sw_blend_dsc_t blend_dsc;
+    lv_memset_00(&blend_dsc, sizeof(blend_dsc));
+    blend_dsc.blend_area = &blend_area;
+    blend_dsc.color = dsc->color;
+    blend_dsc.opa = dsc->opa;
+
+    /*If there is no mask then simply draw a rectangle*/
+    if(simple_mode) {
+        lv_draw_sw_blend(draw_ctx, &blend_dsc);
+    }
+#if LV_DRAW_COMPLEX
+    /*If there other mask apply it*/
+    else {
+
+        int32_t blend_area_w = lv_area_get_width(&blend_area);
+
+        lv_coord_t y2 = blend_area.y2;
+        blend_area.y2 = blend_area.y1;
+
+        lv_coord_t dash_start = 0;
+        if(dashed) {
+            dash_start = (blend_area.x1) % (dsc->dash_gap + dsc->dash_width);
+        }
+
+        lv_opa_t * mask_buf = lv_mem_buf_get(blend_area_w);
+        blend_dsc.mask_buf = mask_buf;
+        blend_dsc.mask_area = &blend_area;
+        int32_t h;
+        for(h = blend_area.y1; h <= y2; h++) {
+            lv_memset_ff(mask_buf, blend_area_w);
+            blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, blend_area.x1, h, blend_area_w);
+
+            if(dashed) {
+                if(blend_dsc.mask_res != LV_DRAW_MASK_RES_TRANSP) {
+                    lv_coord_t dash_cnt = dash_start;
+                    lv_coord_t i;
+                    for(i = 0; i < blend_area_w; i++, dash_cnt++) {
+                        if(dash_cnt <= dsc->dash_width) {
+                            int16_t diff = dsc->dash_width - dash_cnt;
+                            i += diff;
+                            dash_cnt += diff;
+                        }
+                        else if(dash_cnt >= dsc->dash_gap + dsc->dash_width) {
+                            dash_cnt = 0;
+                        }
+                        else {
+                            mask_buf[i] = 0x00;
+                        }
+                    }
+
+                    blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+                }
+            }
+
+            lv_draw_sw_blend(draw_ctx, &blend_dsc);
+
+            blend_area.y1++;
+            blend_area.y2++;
+        }
+        lv_mem_buf_release(mask_buf);
+    }
+#endif /*LV_DRAW_COMPLEX*/
+}
+
+LV_ATTRIBUTE_FAST_MEM static void draw_line_ver(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc,
+                                                const lv_point_t * point1, const lv_point_t * point2)
+{
+    int32_t w = dsc->width - 1;
+    int32_t w_half0 = w >> 1;
+    int32_t w_half1 = w_half0 + (w & 0x1); /*Compensate rounding error*/
+
+    lv_area_t blend_area;
+    blend_area.x1 = point1->x - w_half1;
+    blend_area.x2 = point1->x + w_half0;
+    blend_area.y1 = LV_MIN(point1->y, point2->y);
+    blend_area.y2 = LV_MAX(point1->y, point2->y) - 1;
+
+    bool is_common;
+    is_common = _lv_area_intersect(&blend_area, &blend_area, draw_ctx->clip_area);
+    if(!is_common) return;
+
+    bool dashed = dsc->dash_gap && dsc->dash_width ? true : false;
+    bool simple_mode = true;
+    if(lv_draw_mask_is_any(&blend_area)) simple_mode = false;
+    else if(dashed) simple_mode = false;
+
+    lv_draw_sw_blend_dsc_t blend_dsc;
+    lv_memset_00(&blend_dsc, sizeof(blend_dsc));
+    blend_dsc.blend_area = &blend_area;
+    blend_dsc.color = dsc->color;
+    blend_dsc.opa = dsc->opa;
+
+    /*If there is no mask then simply draw a rectangle*/
+    if(simple_mode) {
+        lv_draw_sw_blend(draw_ctx, &blend_dsc);
+    }
+
+#if LV_DRAW_COMPLEX
+    /*If there other mask apply it*/
+    else {
+        int32_t draw_area_w = lv_area_get_width(&blend_area);
+
+        lv_coord_t y2 = blend_area.y2;
+        blend_area.y2 = blend_area.y1;
+
+        lv_opa_t * mask_buf = lv_mem_buf_get(draw_area_w);
+        blend_dsc.mask_buf = mask_buf;
+        blend_dsc.mask_area = &blend_area;
+
+        lv_coord_t dash_start = 0;
+        if(dashed) {
+            dash_start = (blend_area.y1) % (dsc->dash_gap + dsc->dash_width);
+        }
+
+        lv_coord_t dash_cnt = dash_start;
+
+        int32_t h;
+        for(h = blend_area.y1; h <= y2; h++) {
+            lv_memset_ff(mask_buf, draw_area_w);
+            blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, blend_area.x1, h, draw_area_w);
+
+            if(dashed) {
+                if(blend_dsc.mask_res != LV_DRAW_MASK_RES_TRANSP) {
+                    if(dash_cnt > dsc->dash_width) {
+                        blend_dsc.mask_res = LV_DRAW_MASK_RES_TRANSP;
+                    }
+
+                    if(dash_cnt >= dsc->dash_gap + dsc->dash_width) {
+                        dash_cnt = 0;
+                    }
+                }
+                dash_cnt ++;
+            }
+
+            lv_draw_sw_blend(draw_ctx, &blend_dsc);
+
+            blend_area.y1++;
+            blend_area.y2++;
+        }
+        lv_mem_buf_release(mask_buf);
+    }
+#endif /*LV_DRAW_COMPLEX*/
+}
+
+LV_ATTRIBUTE_FAST_MEM static void draw_line_skew(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc,
+                                                 const lv_point_t * point1, const lv_point_t * point2)
+{
+#if LV_DRAW_COMPLEX
+    /*Keep the great y in p1*/
+    lv_point_t p1;
+    lv_point_t p2;
+    if(point1->y < point2->y) {
+        p1.y = point1->y;
+        p2.y = point2->y;
+        p1.x = point1->x;
+        p2.x = point2->x;
+    }
+    else {
+        p1.y = point2->y;
+        p2.y = point1->y;
+        p1.x = point2->x;
+        p2.x = point1->x;
+    }
+
+    int32_t xdiff = p2.x - p1.x;
+    int32_t ydiff = p2.y - p1.y;
+    bool flat = LV_ABS(xdiff) > LV_ABS(ydiff) ? true : false;
+
+    static const uint8_t wcorr[] = {
+        128, 128, 128, 129, 129, 130, 130, 131,
+        132, 133, 134, 135, 137, 138, 140, 141,
+        143, 145, 147, 149, 151, 153, 155, 158,
+        160, 162, 165, 167, 170, 173, 175, 178,
+        181,
+    };
+
+    int32_t w = dsc->width;
+    int32_t wcorr_i = 0;
+    if(flat) wcorr_i = (LV_ABS(ydiff) << 5) / LV_ABS(xdiff);
+    else wcorr_i = (LV_ABS(xdiff) << 5) / LV_ABS(ydiff);
+
+    w = (w * wcorr[wcorr_i] + 63) >> 7;     /*+ 63 for rounding*/
+    int32_t w_half0 = w >> 1;
+    int32_t w_half1 = w_half0 + (w & 0x1); /*Compensate rounding error*/
+
+    lv_area_t blend_area;
+    blend_area.x1 = LV_MIN(p1.x, p2.x) - w;
+    blend_area.x2 = LV_MAX(p1.x, p2.x) + w;
+    blend_area.y1 = LV_MIN(p1.y, p2.y) - w;
+    blend_area.y2 = LV_MAX(p1.y, p2.y) + w;
+
+    /*Get the union of `coords` and `clip`*/
+    /*`clip` is already truncated to the `draw_buf` size
+     *in 'lv_refr_area' function*/
+    bool is_common = _lv_area_intersect(&blend_area, &blend_area, draw_ctx->clip_area);
+    if(is_common == false) return;
+
+    lv_draw_mask_line_param_t mask_left_param;
+    lv_draw_mask_line_param_t mask_right_param;
+    lv_draw_mask_line_param_t mask_top_param;
+    lv_draw_mask_line_param_t mask_bottom_param;
+
+    if(flat) {
+        if(xdiff > 0) {
+            lv_draw_mask_line_points_init(&mask_left_param, p1.x, p1.y - w_half0, p2.x, p2.y - w_half0,
+                                          LV_DRAW_MASK_LINE_SIDE_LEFT);
+            lv_draw_mask_line_points_init(&mask_right_param, p1.x, p1.y + w_half1, p2.x, p2.y + w_half1,
+                                          LV_DRAW_MASK_LINE_SIDE_RIGHT);
+        }
+        else {
+            lv_draw_mask_line_points_init(&mask_left_param, p1.x, p1.y + w_half1, p2.x, p2.y + w_half1,
+                                          LV_DRAW_MASK_LINE_SIDE_LEFT);
+            lv_draw_mask_line_points_init(&mask_right_param, p1.x, p1.y - w_half0, p2.x, p2.y - w_half0,
+                                          LV_DRAW_MASK_LINE_SIDE_RIGHT);
+        }
+    }
+    else {
+        lv_draw_mask_line_points_init(&mask_left_param, p1.x + w_half1, p1.y, p2.x + w_half1, p2.y,
+                                      LV_DRAW_MASK_LINE_SIDE_LEFT);
+        lv_draw_mask_line_points_init(&mask_right_param, p1.x - w_half0, p1.y, p2.x - w_half0, p2.y,
+                                      LV_DRAW_MASK_LINE_SIDE_RIGHT);
+    }
+
+    /*Use the normal vector for the endings*/
+
+    int16_t mask_left_id = lv_draw_mask_add(&mask_left_param, NULL);
+    int16_t mask_right_id = lv_draw_mask_add(&mask_right_param, NULL);
+    int16_t mask_top_id = LV_MASK_ID_INV;
+    int16_t mask_bottom_id = LV_MASK_ID_INV;
+
+    if(!dsc->raw_end) {
+        lv_draw_mask_line_points_init(&mask_top_param, p1.x, p1.y, p1.x - ydiff, p1.y + xdiff, LV_DRAW_MASK_LINE_SIDE_BOTTOM);
+        lv_draw_mask_line_points_init(&mask_bottom_param, p2.x, p2.y, p2.x - ydiff, p2.y + xdiff,  LV_DRAW_MASK_LINE_SIDE_TOP);
+        mask_top_id = lv_draw_mask_add(&mask_top_param, NULL);
+        mask_bottom_id = lv_draw_mask_add(&mask_bottom_param, NULL);
+    }
+
+    /*The real draw area is around the line.
+     *It's easy to calculate with steep lines, but the area can be very wide with very flat lines.
+     *So deal with it only with steep lines.*/
+    int32_t draw_area_w = lv_area_get_width(&blend_area);
+
+    /*Draw the background line by line*/
+    int32_t h;
+    uint32_t hor_res = (uint32_t)lv_disp_get_hor_res(_lv_refr_get_disp_refreshing());
+    size_t mask_buf_size = LV_MIN(lv_area_get_size(&blend_area), hor_res);
+    lv_opa_t * mask_buf = lv_mem_buf_get(mask_buf_size);
+
+    lv_coord_t y2 = blend_area.y2;
+    blend_area.y2 = blend_area.y1;
+
+    uint32_t mask_p = 0;
+    lv_memset_ff(mask_buf, mask_buf_size);
+
+    lv_draw_sw_blend_dsc_t blend_dsc;
+    lv_memset_00(&blend_dsc, sizeof(blend_dsc));
+    blend_dsc.blend_area = &blend_area;
+    blend_dsc.color = dsc->color;
+    blend_dsc.opa = dsc->opa;
+    blend_dsc.mask_buf = mask_buf;
+    blend_dsc.mask_area = &blend_area;
+
+    /*Fill the first row with 'color'*/
+    for(h = blend_area.y1; h <= y2; h++) {
+        blend_dsc.mask_res = lv_draw_mask_apply(&mask_buf[mask_p], blend_area.x1, h, draw_area_w);
+        if(blend_dsc.mask_res == LV_DRAW_MASK_RES_TRANSP) {
+            lv_memset_00(&mask_buf[mask_p], draw_area_w);
+        }
+
+        mask_p += draw_area_w;
+        if((uint32_t) mask_p + draw_area_w < mask_buf_size) {
+            blend_area.y2 ++;
+        }
+        else {
+            blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+            lv_draw_sw_blend(draw_ctx, &blend_dsc);
+
+            blend_area.y1 = blend_area.y2 + 1;
+            blend_area.y2 = blend_area.y1;
+            mask_p = 0;
+            lv_memset_ff(mask_buf, mask_buf_size);
+        }
+    }
+
+    /*Flush the last part*/
+    if(blend_area.y1 != blend_area.y2) {
+        blend_area.y2--;
+        blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
+        lv_draw_sw_blend(draw_ctx, &blend_dsc);
+    }
+
+    lv_mem_buf_release(mask_buf);
+
+    lv_draw_mask_free_param(&mask_left_param);
+    lv_draw_mask_free_param(&mask_right_param);
+    if(mask_top_id != LV_MASK_ID_INV) lv_draw_mask_free_param(&mask_top_param);
+    if(mask_bottom_id != LV_MASK_ID_INV) lv_draw_mask_free_param(&mask_bottom_param);
+    lv_draw_mask_remove_id(mask_left_id);
+    lv_draw_mask_remove_id(mask_right_id);
+    lv_draw_mask_remove_id(mask_top_id);
+    lv_draw_mask_remove_id(mask_bottom_id);
+#else
+    LV_UNUSED(point1);
+    LV_UNUSED(point2);
+    LV_UNUSED(draw_ctx);
+    LV_UNUSED(dsc);
+    LV_LOG_WARN("Can't draw skewed line with LV_DRAW_COMPLEX == 0");
+#endif /*LV_DRAW_COMPLEX*/
+}
+

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_polygon.c

@@ -0,0 +1,207 @@
+/**
+ * @file lv_draw_sw_polygon.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_sw.h"
+#include "../../misc/lv_math.h"
+#include "../../misc/lv_mem.h"
+#include "../../misc/lv_area.h"
+#include "../../misc/lv_color.h"
+#include "../lv_draw_rect.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Draw a polygon. Only convex polygons are supported
+ * @param points an array of points
+ * @param point_cnt number of points
+ * @param clip_area polygon will be drawn only in this area
+ * @param draw_dsc pointer to an initialized `lv_draw_rect_dsc_t` variable
+ */
+void lv_draw_sw_polygon(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc, const lv_point_t * points,
+                        uint16_t point_cnt)
+{
+#if LV_DRAW_COMPLEX
+    if(point_cnt < 3) return;
+    if(points == NULL) return;
+
+    /*Join adjacent points if they are on the same coordinate*/
+    lv_point_t * p = lv_mem_buf_get(point_cnt * sizeof(lv_point_t));
+    if(p == NULL) return;
+    uint16_t i;
+    uint16_t pcnt = 0;
+    p[0] = points[0];
+    for(i = 0; i < point_cnt - 1; i++) {
+        if(points[i].x != points[i + 1].x || points[i].y != points[i + 1].y) {
+            p[pcnt] = points[i];
+            pcnt++;
+        }
+    }
+    /*The first and the last points are also adjacent*/
+    if(points[0].x != points[point_cnt - 1].x || points[0].y != points[point_cnt - 1].y) {
+        p[pcnt] = points[point_cnt - 1];
+        pcnt++;
+    }
+
+    point_cnt = pcnt;
+    if(point_cnt < 3) {
+        lv_mem_buf_release(p);
+        return;
+    }
+
+    lv_area_t poly_coords = {.x1 = LV_COORD_MAX, .y1 = LV_COORD_MAX, .x2 = LV_COORD_MIN, .y2 = LV_COORD_MIN};
+
+    for(i = 0; i < point_cnt; i++) {
+        poly_coords.x1 = LV_MIN(poly_coords.x1, p[i].x);
+        poly_coords.y1 = LV_MIN(poly_coords.y1, p[i].y);
+        poly_coords.x2 = LV_MAX(poly_coords.x2, p[i].x);
+        poly_coords.y2 = LV_MAX(poly_coords.y2, p[i].y);
+    }
+
+    bool is_common;
+    lv_area_t clip_area;
+    is_common = _lv_area_intersect(&clip_area, &poly_coords, draw_ctx->clip_area);
+    if(!is_common) {
+        lv_mem_buf_release(p);
+        return;
+    }
+
+    const lv_area_t * clip_area_ori = draw_ctx->clip_area;
+    draw_ctx->clip_area = &clip_area;
+
+    /*Find the lowest point*/
+    lv_coord_t y_min = p[0].y;
+    int16_t y_min_i = 0;
+
+    for(i = 1; i < point_cnt; i++) {
+        if(p[i].y < y_min) {
+            y_min = p[i].y;
+            y_min_i = i;
+        }
+    }
+
+    lv_draw_mask_line_param_t * mp = lv_mem_buf_get(sizeof(lv_draw_mask_line_param_t) * point_cnt);
+    lv_draw_mask_line_param_t * mp_next = mp;
+
+    int32_t i_prev_left = y_min_i;
+    int32_t i_prev_right = y_min_i;
+    int32_t i_next_left;
+    int32_t i_next_right;
+    uint32_t mask_cnt = 0;
+
+    /*Get the index of the left and right points*/
+    i_next_left = y_min_i - 1;
+    if(i_next_left < 0) i_next_left = point_cnt + i_next_left;
+
+    i_next_right = y_min_i + 1;
+    if(i_next_right > point_cnt - 1) i_next_right = 0;
+
+    /**
+     * Check if the order of points is inverted or not.
+     * The normal case is when the left point is on `y_min_i - 1`
+     * Explanation:
+     *   if angle(p_left) < angle(p_right) -> inverted
+     *   dy_left/dx_left < dy_right/dx_right
+     *   dy_left * dx_right < dy_right * dx_left
+     */
+    lv_coord_t dxl = p[i_next_left].x - p[y_min_i].x;
+    lv_coord_t dxr = p[i_next_right].x - p[y_min_i].x;
+    lv_coord_t dyl = p[i_next_left].y - p[y_min_i].y;
+    lv_coord_t dyr = p[i_next_right].y - p[y_min_i].y;
+
+    bool inv = false;
+    if(dyl * dxr < dyr * dxl) inv = true;
+
+    do {
+        if(!inv) {
+            i_next_left = i_prev_left - 1;
+            if(i_next_left < 0) i_next_left = point_cnt + i_next_left;
+
+            i_next_right = i_prev_right + 1;
+            if(i_next_right > point_cnt - 1) i_next_right = 0;
+        }
+        else {
+            i_next_left = i_prev_left + 1;
+            if(i_next_left > point_cnt - 1) i_next_left = 0;
+
+            i_next_right = i_prev_right - 1;
+            if(i_next_right < 0) i_next_right = point_cnt + i_next_right;
+        }
+
+        if(p[i_next_left].y >= p[i_prev_left].y) {
+            if(p[i_next_left].y != p[i_prev_left].y &&
+               p[i_next_left].x != p[i_prev_left].x) {
+                lv_draw_mask_line_points_init(mp_next, p[i_prev_left].x, p[i_prev_left].y,
+                                              p[i_next_left].x, p[i_next_left].y,
+                                              LV_DRAW_MASK_LINE_SIDE_RIGHT);
+                lv_draw_mask_add(mp_next, mp);
+                mp_next++;
+            }
+            mask_cnt++;
+            i_prev_left = i_next_left;
+        }
+
+        if(mask_cnt == point_cnt) break;
+
+        if(p[i_next_right].y >= p[i_prev_right].y) {
+            if(p[i_next_right].y != p[i_prev_right].y &&
+               p[i_next_right].x != p[i_prev_right].x) {
+
+                lv_draw_mask_line_points_init(mp_next, p[i_prev_right].x, p[i_prev_right].y,
+                                              p[i_next_right].x, p[i_next_right].y,
+                                              LV_DRAW_MASK_LINE_SIDE_LEFT);
+                lv_draw_mask_add(mp_next, mp);
+                mp_next++;
+            }
+            mask_cnt++;
+            i_prev_right = i_next_right;
+        }
+
+    } while(mask_cnt < point_cnt);
+
+    lv_draw_rect(draw_ctx, draw_dsc, &poly_coords);
+
+    lv_draw_mask_remove_custom(mp);
+
+    lv_mem_buf_release(mp);
+    lv_mem_buf_release(p);
+
+    draw_ctx->clip_area = clip_area_ori;
+#else
+    LV_UNUSED(points);
+    LV_UNUSED(point_cnt);
+    LV_UNUSED(draw_ctx);
+    LV_UNUSED(draw_dsc);
+    LV_LOG_WARN("Can't draw polygon with LV_DRAW_COMPLEX == 0");
+#endif /*LV_DRAW_COMPLEX*/
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/sw/lv_draw_sw_transform.c

@@ -0,0 +1,496 @@
+/**
+ * @file lv_draw_sw_tranform.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_draw_sw.h"
+#include "../../misc/lv_assert.h"
+#include "../../misc/lv_area.h"
+#include "../../core/lv_refr.h"
+
+#if LV_DRAW_COMPLEX
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+typedef struct {
+    int32_t x_in;
+    int32_t y_in;
+    int32_t x_out;
+    int32_t y_out;
+    int32_t sinma;
+    int32_t cosma;
+    int32_t zoom;
+    int32_t angle;
+    int32_t pivot_x_256;
+    int32_t pivot_y_256;
+    lv_point_t pivot;
+} point_transform_dsc_t;
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+/**
+ * Transform a point with 1/256 precision (the output coordinates are upscaled by 256)
+ * @param t         pointer to n initialized `point_transform_dsc_t` structure
+ * @param xin       X coordinate to rotate
+ * @param yin       Y coordinate to rotate
+ * @param xout      upscaled, transformed X
+ * @param yout      upscaled, transformed Y
+ */
+static void transform_point_upscaled(point_transform_dsc_t * t, int32_t xin, int32_t yin, int32_t * xout,
+                                     int32_t * yout);
+
+static void argb_no_aa(const uint8_t * src, lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
+                       int32_t xs_ups, int32_t ys_ups, int32_t xs_step, int32_t ys_step,
+                       int32_t x_end, lv_color_t * cbuf, uint8_t * abuf);
+
+static void rgb_no_aa(const uint8_t * src, lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
+                      int32_t xs_ups, int32_t ys_ups, int32_t xs_step, int32_t ys_step,
+                      int32_t x_end, lv_color_t * cbuf, uint8_t * abuf, lv_img_cf_t cf);
+
+#if LV_COLOR_DEPTH == 16
+static void rgb565a8_no_aa(const uint8_t * src, lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
+                           int32_t xs_ups, int32_t ys_ups, int32_t xs_step, int32_t ys_step,
+                           int32_t x_end, lv_color_t * cbuf, uint8_t * abuf);
+#endif
+
+static void argb_and_rgb_aa(const uint8_t * src, lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
+                            int32_t xs_ups, int32_t ys_ups, int32_t xs_step, int32_t ys_step,
+                            int32_t x_end, lv_color_t * cbuf, uint8_t * abuf, lv_img_cf_t cf);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_draw_sw_transform(lv_draw_ctx_t * draw_ctx, const lv_area_t * dest_area, const void * src_buf,
+                          lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
+                          const lv_draw_img_dsc_t * draw_dsc, lv_img_cf_t cf, lv_color_t * cbuf, lv_opa_t * abuf)
+{
+    LV_UNUSED(draw_ctx);
+
+    point_transform_dsc_t tr_dsc;
+    tr_dsc.angle = -draw_dsc->angle;
+    tr_dsc.zoom = (256 * 256) / draw_dsc->zoom;
+    tr_dsc.pivot = draw_dsc->pivot;
+
+    int32_t angle_low = tr_dsc.angle / 10;
+    int32_t angle_high = angle_low + 1;
+    int32_t angle_rem = tr_dsc.angle  - (angle_low * 10);
+
+    int32_t s1 = lv_trigo_sin(angle_low);
+    int32_t s2 = lv_trigo_sin(angle_high);
+
+    int32_t c1 = lv_trigo_sin(angle_low + 90);
+    int32_t c2 = lv_trigo_sin(angle_high + 90);
+
+    tr_dsc.sinma = (s1 * (10 - angle_rem) + s2 * angle_rem) / 10;
+    tr_dsc.cosma = (c1 * (10 - angle_rem) + c2 * angle_rem) / 10;
+    tr_dsc.sinma = tr_dsc.sinma >> (LV_TRIGO_SHIFT - 10);
+    tr_dsc.cosma = tr_dsc.cosma >> (LV_TRIGO_SHIFT - 10);
+    tr_dsc.pivot_x_256 = tr_dsc.pivot.x * 256;
+    tr_dsc.pivot_y_256 = tr_dsc.pivot.y * 256;
+
+    lv_coord_t dest_w = lv_area_get_width(dest_area);
+    lv_coord_t dest_h = lv_area_get_height(dest_area);
+    lv_coord_t y;
+    for(y = 0; y < dest_h; y++) {
+        int32_t xs1_ups, ys1_ups, xs2_ups, ys2_ups;
+
+        transform_point_upscaled(&tr_dsc, dest_area->x1, dest_area->y1 + y, &xs1_ups, &ys1_ups);
+        transform_point_upscaled(&tr_dsc, dest_area->x2, dest_area->y1 + y, &xs2_ups, &ys2_ups);
+
+        int32_t xs_diff = xs2_ups - xs1_ups;
+        int32_t ys_diff = ys2_ups - ys1_ups;
+        int32_t xs_step_256 = 0;
+        int32_t ys_step_256 = 0;
+        if(dest_w > 1) {
+            xs_step_256 = (256 * xs_diff) / (dest_w - 1);
+            ys_step_256 = (256 * ys_diff) / (dest_w - 1);
+        }
+        int32_t xs_ups = xs1_ups;
+        int32_t ys_ups = ys1_ups;
+
+        if(draw_dsc->antialias == 0) {
+            switch(cf) {
+                case LV_IMG_CF_TRUE_COLOR_ALPHA:
+                    argb_no_aa(src_buf, src_w, src_h, src_stride, xs_ups, ys_ups, xs_step_256, ys_step_256, dest_w, cbuf, abuf);
+                    break;
+                case LV_IMG_CF_TRUE_COLOR:
+                case LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED:
+                    rgb_no_aa(src_buf, src_w, src_h, src_stride, xs_ups, ys_ups, xs_step_256, ys_step_256, dest_w, cbuf, abuf, cf);
+                    break;
+
+#if LV_COLOR_DEPTH == 16
+                case LV_IMG_CF_RGB565A8:
+                    rgb565a8_no_aa(src_buf, src_w, src_h, src_stride, xs_ups, ys_ups, xs_step_256, ys_step_256, dest_w, cbuf, abuf);
+                    break;
+#endif
+                default:
+                    break;
+            }
+        }
+        else {
+            argb_and_rgb_aa(src_buf, src_w, src_h, src_stride, xs_ups, ys_ups, xs_step_256, ys_step_256, dest_w, cbuf, abuf, cf);
+        }
+
+        cbuf += dest_w;
+        abuf += dest_w;
+    }
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void rgb_no_aa(const uint8_t * src, lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
+                      int32_t xs_ups, int32_t ys_ups, int32_t xs_step, int32_t ys_step,
+                      int32_t x_end, lv_color_t * cbuf, uint8_t * abuf, lv_img_cf_t cf)
+{
+    int32_t xs_ups_start = xs_ups;
+    int32_t ys_ups_start = ys_ups;
+    lv_disp_t * d = _lv_refr_get_disp_refreshing();
+    lv_color_t ck = d->driver->color_chroma_key;
+
+    lv_memset_ff(abuf, x_end);
+
+    lv_coord_t x;
+    for(x = 0; x < x_end; x++) {
+        xs_ups = xs_ups_start + ((xs_step * x) >> 8);
+        ys_ups = ys_ups_start + ((ys_step * x) >> 8);
+
+        int32_t xs_int = xs_ups >> 8;
+        int32_t ys_int = ys_ups >> 8;
+        if(xs_int < 0 || xs_int >= src_w || ys_int < 0 || ys_int >= src_h) {
+            abuf[x] = 0x00;
+        }
+        else {
+
+#if LV_COLOR_DEPTH == 8
+            const uint8_t * src_tmp = src;
+            src_tmp += ys_int * src_stride + xs_int;
+            cbuf[x].full = src_tmp[0];
+#elif LV_COLOR_DEPTH == 16
+            const lv_color_t * src_tmp = (const lv_color_t *)src;
+            src_tmp += ys_int * src_stride + xs_int;
+            cbuf[x] = *src_tmp;
+#elif LV_COLOR_DEPTH == 32
+            const uint8_t * src_tmp = src;
+            src_tmp += (ys_int * src_stride * sizeof(lv_color_t)) + xs_int * sizeof(lv_color_t);
+            cbuf[x].full = *((uint32_t *)src_tmp);
+#endif
+        }
+        if(cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED && cbuf[x].full == ck.full) {
+            abuf[x] = 0x00;
+        }
+    }
+}
+
+static void argb_no_aa(const uint8_t * src, lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
+                       int32_t xs_ups, int32_t ys_ups, int32_t xs_step, int32_t ys_step,
+                       int32_t x_end, lv_color_t * cbuf, uint8_t * abuf)
+{
+    int32_t xs_ups_start = xs_ups;
+    int32_t ys_ups_start = ys_ups;
+
+    lv_coord_t x;
+    for(x = 0; x < x_end; x++) {
+        xs_ups = xs_ups_start + ((xs_step * x) >> 8);
+        ys_ups = ys_ups_start + ((ys_step * x) >> 8);
+
+        int32_t xs_int = xs_ups >> 8;
+        int32_t ys_int = ys_ups >> 8;
+        if(xs_int < 0 || xs_int >= src_w || ys_int < 0 || ys_int >= src_h) {
+            abuf[x] = 0;
+        }
+        else {
+            const uint8_t * src_tmp = src;
+            src_tmp += (ys_int * src_stride * LV_IMG_PX_SIZE_ALPHA_BYTE) + xs_int * LV_IMG_PX_SIZE_ALPHA_BYTE;
+
+#if LV_COLOR_DEPTH == 8
+            cbuf[x].full = src_tmp[0];
+#elif LV_COLOR_DEPTH == 16
+            cbuf[x].full = src_tmp[0] + (src_tmp[1] << 8);
+#elif LV_COLOR_DEPTH == 32
+            cbuf[x].full = *((uint32_t *)src_tmp);
+#endif
+            abuf[x] = src_tmp[LV_IMG_PX_SIZE_ALPHA_BYTE - 1];
+        }
+    }
+}
+
+#if LV_COLOR_DEPTH == 16
+static void rgb565a8_no_aa(const uint8_t * src, lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
+                           int32_t xs_ups, int32_t ys_ups, int32_t xs_step, int32_t ys_step,
+                           int32_t x_end, lv_color_t * cbuf, uint8_t * abuf)
+{
+    int32_t xs_ups_start = xs_ups;
+    int32_t ys_ups_start = ys_ups;
+
+    lv_coord_t x;
+    for(x = 0; x < x_end; x++) {
+        xs_ups = xs_ups_start + ((xs_step * x) >> 8);
+        ys_ups = ys_ups_start + ((ys_step * x) >> 8);
+
+        int32_t xs_int = xs_ups >> 8;
+        int32_t ys_int = ys_ups >> 8;
+        if(xs_int < 0 || xs_int >= src_w || ys_int < 0 || ys_int >= src_h) {
+            abuf[x] = 0;
+        }
+        else {
+            const lv_color_t * src_tmp = (const lv_color_t *)src;
+            src_tmp += ys_int * src_stride + xs_int;
+            cbuf[x] = *src_tmp;
+
+            const lv_opa_t * a_tmp = src + src_stride * src_h * sizeof(lv_color_t);
+            a_tmp += ys_int * src_stride + xs_int;
+            abuf[x] = *a_tmp;
+        }
+    }
+}
+#endif
+
+
+static void argb_and_rgb_aa(const uint8_t * src, lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
+                            int32_t xs_ups, int32_t ys_ups, int32_t xs_step, int32_t ys_step,
+                            int32_t x_end, lv_color_t * cbuf, uint8_t * abuf, lv_img_cf_t cf)
+{
+    int32_t xs_ups_start = xs_ups;
+    int32_t ys_ups_start = ys_ups;
+    bool has_alpha;
+    int32_t px_size;
+    lv_color_t ck = {0};
+    switch(cf) {
+        case LV_IMG_CF_TRUE_COLOR:
+            has_alpha = false;
+            px_size = sizeof(lv_color_t);
+            break;
+        case LV_IMG_CF_TRUE_COLOR_ALPHA:
+            has_alpha = true;
+            px_size = LV_IMG_PX_SIZE_ALPHA_BYTE;
+            break;
+        case LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED: {
+                has_alpha = true;
+                px_size = sizeof(lv_color_t);
+                lv_disp_t * d = _lv_refr_get_disp_refreshing();
+                ck = d->driver->color_chroma_key;
+                break;
+            }
+#if LV_COLOR_DEPTH == 16
+        case LV_IMG_CF_RGB565A8:
+            has_alpha = true;
+            px_size = sizeof(lv_color_t);
+            break;
+#endif
+        default:
+            return;
+    }
+
+    lv_coord_t x;
+    for(x = 0; x < x_end; x++) {
+        xs_ups = xs_ups_start + ((xs_step * x) >> 8);
+        ys_ups = ys_ups_start + ((ys_step * x) >> 8);
+
+        int32_t xs_int = xs_ups >> 8;
+        int32_t ys_int = ys_ups >> 8;
+
+        /*Fully out of the image*/
+        if(xs_int < 0 || xs_int >= src_w || ys_int < 0 || ys_int >= src_h) {
+            abuf[x] = 0x00;
+            continue;
+        }
+
+        /*Get the direction the hor and ver neighbor
+         *`fract` will be in range of 0x00..0xFF and `next` (+/-1) indicates the direction*/
+        int32_t xs_fract = xs_ups & 0xFF;
+        int32_t ys_fract = ys_ups & 0xFF;
+
+        int32_t x_next;
+        int32_t y_next;
+        if(xs_fract < 0x80) {
+            x_next = -1;
+            xs_fract = (0x7F - xs_fract) * 2;
+        }
+        else {
+            x_next = 1;
+            xs_fract = (xs_fract - 0x80) * 2;
+        }
+        if(ys_fract < 0x80) {
+            y_next = -1;
+            ys_fract = (0x7F - ys_fract) * 2;
+        }
+        else {
+            y_next = 1;
+            ys_fract = (ys_fract - 0x80) * 2;
+        }
+
+        const uint8_t * src_tmp = src;
+        src_tmp += (ys_int * src_stride * px_size) + xs_int * px_size;
+
+
+        if(xs_int + x_next >= 0 &&
+           xs_int + x_next <= src_w - 1 &&
+           ys_int + y_next >= 0 &&
+           ys_int + y_next <= src_h - 1) {
+
+            const uint8_t * px_base = src_tmp;
+            const uint8_t * px_hor = src_tmp + x_next * px_size;
+            const uint8_t * px_ver = src_tmp + y_next * src_stride * px_size;
+            lv_color_t c_base;
+            lv_color_t c_ver;
+            lv_color_t c_hor;
+
+            if(has_alpha) {
+                lv_opa_t a_base;
+                lv_opa_t a_ver;
+                lv_opa_t a_hor;
+                if(cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
+                    a_base = px_base[LV_IMG_PX_SIZE_ALPHA_BYTE - 1];
+                    a_ver = px_ver[LV_IMG_PX_SIZE_ALPHA_BYTE - 1];
+                    a_hor = px_hor[LV_IMG_PX_SIZE_ALPHA_BYTE - 1];
+                }
+#if LV_COLOR_DEPTH == 16
+                else if(cf == LV_IMG_CF_RGB565A8) {
+                    const lv_opa_t * a_tmp = src + src_stride * src_h * sizeof(lv_color_t);
+                    a_base = *(a_tmp + (ys_int * src_stride) + xs_int);
+                    a_hor = *(a_tmp + (ys_int * src_stride) + xs_int + x_next);
+                    a_ver = *(a_tmp + ((ys_int + y_next) * src_stride) + xs_int);
+                }
+#endif
+                else if(cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED) {
+                    if(((lv_color_t *)px_base)->full == ck.full ||
+                       ((lv_color_t *)px_ver)->full == ck.full ||
+                       ((lv_color_t *)px_hor)->full == ck.full) {
+                        abuf[x] = 0x00;
+                        continue;
+                    }
+                    else {
+                        a_base = 0xff;
+                        a_ver = 0xff;
+                        a_hor = 0xff;
+                    }
+                }
+                else {
+                    a_base = 0xff;
+                    a_ver = 0xff;
+                    a_hor = 0xff;
+                }
+
+                if(a_ver != a_base) a_ver = ((a_ver * ys_fract) + (a_base * (0x100 - ys_fract))) >> 8;
+                if(a_hor != a_base) a_hor = ((a_hor * xs_fract) + (a_base * (0x100 - xs_fract))) >> 8;
+                abuf[x] = (a_ver + a_hor) >> 1;
+
+                if(abuf[x] == 0x00) continue;
+
+#if LV_COLOR_DEPTH == 8
+                c_base.full = px_base[0];
+                c_ver.full = px_ver[0];
+                c_hor.full = px_hor[0];
+#elif LV_COLOR_DEPTH == 16
+                c_base.full = px_base[0] + (px_base[1] << 8);
+                c_ver.full = px_ver[0] + (px_ver[1] << 8);
+                c_hor.full = px_hor[0] + (px_hor[1] << 8);
+#elif LV_COLOR_DEPTH == 32
+                c_base.full = *((uint32_t *)px_base);
+                c_ver.full = *((uint32_t *)px_ver);
+                c_hor.full = *((uint32_t *)px_hor);
+#endif
+            }
+            /*No alpha channel -> RGB*/
+            else {
+                c_base = *((const lv_color_t *) px_base);
+                c_hor = *((const lv_color_t *) px_hor);
+                c_ver = *((const lv_color_t *) px_ver);
+                abuf[x] = 0xff;
+            }
+
+            if(c_base.full == c_ver.full && c_base.full == c_hor.full) {
+                cbuf[x] = c_base;
+            }
+            else {
+                c_ver = lv_color_mix(c_ver, c_base, ys_fract);
+                c_hor = lv_color_mix(c_hor, c_base, xs_fract);
+                cbuf[x] = lv_color_mix(c_hor, c_ver, LV_OPA_50);
+            }
+        }
+        /*Partially out of the image*/
+        else {
+#if LV_COLOR_DEPTH == 8
+            cbuf[x].full = src_tmp[0];
+#elif LV_COLOR_DEPTH == 16
+            cbuf[x].full = src_tmp[0] + (src_tmp[1] << 8);
+#elif LV_COLOR_DEPTH == 32
+            cbuf[x].full = *((uint32_t *)src_tmp);
+#endif
+            lv_opa_t a;
+            switch(cf) {
+                case LV_IMG_CF_TRUE_COLOR_ALPHA:
+                    a = src_tmp[LV_IMG_PX_SIZE_ALPHA_BYTE - 1];
+                    break;
+                case LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED:
+                    a = cbuf[x].full == ck.full ? 0x00 : 0xff;
+                    break;
+#if LV_COLOR_DEPTH == 16
+                case LV_IMG_CF_RGB565A8:
+                    a = *(src + src_stride * src_h * sizeof(lv_color_t) + (ys_int * src_stride) + xs_int);
+                    break;
+#endif
+                default:
+                    a = 0xff;
+            }
+
+            if((xs_int == 0 && x_next < 0) || (xs_int == src_w - 1 && x_next > 0))  {
+                abuf[x] = (a * (0xFF - xs_fract)) >> 8;
+            }
+            else if((ys_int == 0 && y_next < 0) || (ys_int == src_h - 1 && y_next > 0))  {
+                abuf[x] = (a * (0xFF - ys_fract)) >> 8;
+            }
+            else {
+                abuf[x] = 0x00;
+            }
+        }
+    }
+}
+
+static void transform_point_upscaled(point_transform_dsc_t * t, int32_t xin, int32_t yin, int32_t * xout,
+                                     int32_t * yout)
+{
+    if(t->angle == 0 && t->zoom == LV_IMG_ZOOM_NONE) {
+        *xout = xin * 256;
+        *yout = yin * 256;
+        return;
+    }
+
+    xin -= t->pivot.x;
+    yin -= t->pivot.y;
+
+    if(t->angle == 0) {
+        *xout = ((int32_t)(xin * t->zoom)) + (t->pivot_x_256);
+        *yout = ((int32_t)(yin * t->zoom)) + (t->pivot_y_256);
+    }
+    else if(t->zoom == LV_IMG_ZOOM_NONE) {
+        *xout = ((t->cosma * xin - t->sinma * yin) >> 2) + (t->pivot_x_256);
+        *yout = ((t->sinma * xin + t->cosma * yin) >> 2) + (t->pivot_y_256);
+    }
+    else {
+        *xout = (((t->cosma * xin - t->sinma * yin) * t->zoom) >> 10) + (t->pivot_x_256);
+        *yout = (((t->sinma * xin + t->cosma * yin) * t->zoom) >> 10) + (t->pivot_y_256);
+    }
+}
+
+#endif
+

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/swm341_dma2d/lv_draw_swm341_dma2d.mk

@@ -0,0 +1,6 @@
+CSRCS += lv_gpu_swm341_dma2d.c
+
+DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/swm341_dma2d
+VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/swm341_dma2d
+
+CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/draw/swm341_dma2d"

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/swm341_dma2d/lv_gpu_swm341_dma2d.c

@@ -0,0 +1,241 @@
+/**
+ * @file lv_gpu_swm341_dma2d.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_gpu_swm341_dma2d.h"
+#include "../../core/lv_refr.h"
+
+#if LV_USE_GPU_SWM341_DMA2D
+
+#include LV_GPU_SWM341_DMA2D_INCLUDE
+
+/*********************
+ *      DEFINES
+ *********************/
+
+#if LV_COLOR_16_SWAP
+    #error "Can't use DMA2D with LV_COLOR_16_SWAP 1"
+#endif
+
+#if LV_COLOR_DEPTH == 8
+    #error "Can't use DMA2D with LV_COLOR_DEPTH == 8"
+#endif
+
+#if LV_COLOR_DEPTH == 16
+    #define LV_DMA2D_COLOR_FORMAT LV_SWM341_DMA2D_RGB565
+#elif LV_COLOR_DEPTH == 32
+    #define LV_DMA2D_COLOR_FORMAT LV_SWM341_DMA2D_ARGB8888
+#else
+    /*Can't use GPU with other formats*/
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static void lv_draw_swm341_dma2d_blend_fill(lv_color_t * dest_buf, lv_coord_t dest_stride, const lv_area_t * fill_area,
+                                            lv_color_t color);
+
+static void lv_draw_swm341_dma2d_blend_map(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
+                                           const lv_color_t * src_buf, lv_coord_t src_stride, lv_opa_t opa);
+
+static void lv_draw_swm341_dma2d_img_decoded(lv_draw_ctx_t * draw, const lv_draw_img_dsc_t * dsc,
+                                             const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t color_format);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Turn on the peripheral and set output color mode, this only needs to be done once
+ */
+void lv_draw_swm341_dma2d_init(void)
+{
+    /*Enable DMA2D clock*/
+    SYS->CLKEN0 |= (1 << SYS_CLKEN0_DMA2D_Pos);
+
+    DMA2D->CR &= ~DMA2D_CR_WAIT_Msk;
+    DMA2D->CR |= (CyclesPerUs << DMA2D_CR_WAIT_Pos);
+
+    DMA2D->IF = 0xFF;
+    DMA2D->IE = (0 << DMA2D_IE_DONE_Pos);
+
+    /*set output colour mode*/
+    DMA2D->L[DMA2D_LAYER_OUT].PFCCR = (LV_DMA2D_COLOR_FORMAT << DMA2D_PFCCR_CFMT_Pos);
+}
+
+void lv_draw_swm341_dma2d_ctx_init(lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx)
+{
+
+    lv_draw_sw_init_ctx(drv, draw_ctx);
+
+    lv_draw_swm341_dma2d_ctx_t * dma2d_draw_ctx = (lv_draw_sw_ctx_t *)draw_ctx;
+
+    dma2d_draw_ctx->blend = lv_draw_swm341_dma2d_blend;
+    //    dma2d_draw_ctx->base_draw.draw_img_decoded = lv_draw_swm341_dma2d_img_decoded;
+    dma2d_draw_ctx->base_draw.wait_for_finish = lv_gpu_swm341_dma2d_wait_cb;
+}
+
+void lv_draw_swm341_dma2d_ctx_deinit(lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx)
+{
+    LV_UNUSED(drv);
+    LV_UNUSED(draw_ctx);
+}
+
+void lv_draw_swm341_dma2d_blend(lv_draw_ctx_t * draw_ctx, const lv_draw_sw_blend_dsc_t * dsc)
+{
+    lv_area_t blend_area;
+    if(!_lv_area_intersect(&blend_area, dsc->blend_area, draw_ctx->clip_area))
+        return;
+
+    bool done = false;
+
+    if(dsc->mask_buf == NULL && dsc->blend_mode == LV_BLEND_MODE_NORMAL && lv_area_get_size(&blend_area) > 100) {
+        lv_coord_t dest_stride = lv_area_get_width(draw_ctx->buf_area);
+
+        lv_color_t * dest_buf = draw_ctx->buf;
+        dest_buf += dest_stride * (blend_area.y1 - draw_ctx->buf_area->y1) + (blend_area.x1 - draw_ctx->buf_area->x1);
+
+        const lv_color_t * src_buf = dsc->src_buf;
+        if(src_buf) {
+            lv_draw_sw_blend_basic(draw_ctx, dsc);
+            lv_coord_t src_stride;
+            src_stride = lv_area_get_width(dsc->blend_area);
+            src_buf += src_stride * (blend_area.y1 - dsc->blend_area->y1) + (blend_area.x1 - dsc->blend_area->x1);
+            lv_area_move(&blend_area, -draw_ctx->buf_area->x1, -draw_ctx->buf_area->y1);
+            lv_draw_swm341_dma2d_blend_map(dest_buf, &blend_area, dest_stride, src_buf, src_stride, dsc->opa);
+            done = true;
+        }
+        else if(dsc->opa >= LV_OPA_MAX) {
+            lv_area_move(&blend_area, -draw_ctx->buf_area->x1, -draw_ctx->buf_area->y1);
+            lv_draw_swm341_dma2d_blend_fill(dest_buf, dest_stride, &blend_area, dsc->color);
+            done = true;
+        }
+    }
+
+    if(!done) lv_draw_sw_blend_basic(draw_ctx, dsc);
+}
+
+static void lv_draw_swm341_dma2d_img_decoded(lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * dsc,
+                                             const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t color_format)
+{
+    /*TODO basic ARGB8888 image can be handles here*/
+
+    lv_draw_sw_img_decoded(draw_ctx, dsc, coords, map_p, color_format);
+}
+
+static void lv_draw_swm341_dma2d_blend_fill(lv_color_t * dest_buf, lv_coord_t dest_stride, const lv_area_t * fill_area,
+                                            lv_color_t color)
+{
+    /*Simply fill an area*/
+    int32_t area_w = lv_area_get_width(fill_area);
+    int32_t area_h = lv_area_get_height(fill_area);
+
+#if 1
+    DMA2D->L[DMA2D_LAYER_OUT].COLOR = color.full;
+
+    DMA2D->L[DMA2D_LAYER_OUT].MAR = (uint32_t)dest_buf;
+    DMA2D->L[DMA2D_LAYER_OUT].OR = dest_stride - area_w;
+    DMA2D->NLR = ((area_w - 1) << DMA2D_NLR_NPIXEL_Pos) | ((area_h - 1) << DMA2D_NLR_NLINE_Pos);
+
+    /*start transfer*/
+    DMA2D->CR &= ~DMA2D_CR_MODE_Msk;
+    DMA2D->CR |= (3 << DMA2D_CR_MODE_Pos) |
+                 (1 << DMA2D_CR_START_Pos);
+#else
+    for(uint32_t y = 0; y < area_h; y++) {
+        for(uint32_t x = 0; x < area_w; x++) {
+            dest_buf[y * dest_stride + x] = color;
+        }
+    }
+#endif
+}
+
+static void lv_draw_swm341_dma2d_blend_map(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
+                                           const lv_color_t * src_buf, lv_coord_t src_stride, lv_opa_t opa)
+{
+
+    /*Simple copy*/
+    int32_t dest_w = lv_area_get_width(dest_area);
+    int32_t dest_h = lv_area_get_height(dest_area);
+
+    if(opa >= LV_OPA_MAX) {
+#if 1
+        /*copy output colour mode, this register controls both input and output colour format*/
+        DMA2D->L[DMA2D_LAYER_FG].MAR = (uint32_t)src_buf;
+        DMA2D->L[DMA2D_LAYER_FG].OR = src_stride - dest_w;
+        DMA2D->L[DMA2D_LAYER_FG].PFCCR = (LV_DMA2D_COLOR_FORMAT << DMA2D_PFCCR_CFMT_Pos);
+
+        DMA2D->L[DMA2D_LAYER_OUT].MAR = (uint32_t)dest_buf;
+        DMA2D->L[DMA2D_LAYER_OUT].OR = dest_stride - dest_w;
+
+        DMA2D->NLR = ((dest_w - 1) << DMA2D_NLR_NPIXEL_Pos) | ((dest_h - 1) << DMA2D_NLR_NLINE_Pos);
+
+        /*start transfer*/
+        DMA2D->CR &= ~DMA2D_CR_MODE_Msk;
+        DMA2D->CR |= (0 << DMA2D_CR_MODE_Pos) |
+                     (1 << DMA2D_CR_START_Pos);
+#else
+        lv_color_t temp_buf[1024];
+        for(uint32_t y = 0; y < dest_h; y++) {
+            memcpy(temp_buf, &src_buf[y * src_stride], dest_w * sizeof(lv_color_t));
+            memcpy(&dest_buf[y * dest_stride], temp_buf, dest_w * sizeof(lv_color_t));
+        }
+#endif
+    }
+    else {
+        DMA2D->L[DMA2D_LAYER_FG].MAR = (uint32_t)src_buf;
+        DMA2D->L[DMA2D_LAYER_FG].OR = src_stride - dest_w;
+        DMA2D->L[DMA2D_LAYER_FG].PFCCR = (LV_DMA2D_COLOR_FORMAT << DMA2D_PFCCR_CFMT_Pos)
+                                         /*alpha mode 2, replace with foreground * alpha value*/
+                                         | (2 << DAM2D_PFCCR_AMODE_Pos)
+                                         /*alpha value*/
+                                         | (opa << DMA2D_PFCCR_ALPHA_Pos);
+
+        DMA2D->L[DMA2D_LAYER_BG].MAR = (uint32_t)dest_buf;
+        DMA2D->L[DMA2D_LAYER_BG].OR = dest_stride - dest_w;
+        DMA2D->L[DMA2D_LAYER_BG].PFCCR = (LV_DMA2D_COLOR_FORMAT << DMA2D_PFCCR_CFMT_Pos);
+
+        DMA2D->L[DMA2D_LAYER_OUT].MAR = (uint32_t)dest_buf;
+        DMA2D->L[DMA2D_LAYER_OUT].OR = dest_stride - dest_w;
+
+        DMA2D->NLR = ((dest_w - 1) << DMA2D_NLR_NPIXEL_Pos) | ((dest_h - 1) << DMA2D_NLR_NLINE_Pos);
+
+        /*start transfer*/
+        DMA2D->CR &= ~DMA2D_CR_MODE_Msk;
+        DMA2D->CR |= (2 << DMA2D_CR_MODE_Pos) |
+                     (1 << DMA2D_CR_START_Pos);
+    }
+}
+
+void lv_gpu_swm341_dma2d_wait_cb(lv_draw_ctx_t * draw_ctx)
+{
+    lv_disp_t * disp = _lv_refr_get_disp_refreshing();
+    if(disp->driver && disp->driver->wait_cb) {
+        while(DMA2D->CR & DMA2D_CR_START_Msk) {
+            disp->driver->wait_cb(disp->driver);
+        }
+    }
+    else {
+        while(DMA2D->CR & DMA2D_CR_START_Msk);
+    }
+    lv_draw_sw_wait_for_finish(draw_ctx);
+}
+
+#endif

pico-sensor/McuLib/LittlevGL/lvgl/src/draw/swm341_dma2d/lv_gpu_swm341_dma2d.h

@@ -0,0 +1,64 @@
+/**
+ * @file lv_gpu_swm341_dma2d.h
+ *
+ */
+
+#ifndef LV_GPU_SWM341_DMA2D_H
+#define LV_GPU_SWM341_DMA2D_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../misc/lv_color.h"
+#include "../../hal/lv_hal_disp.h"
+#include "../sw/lv_draw_sw.h"
+
+#if LV_USE_GPU_SWM341_DMA2D
+
+/*********************
+ *      DEFINES
+ *********************/
+
+#define LV_SWM341_DMA2D_ARGB8888 0
+#define LV_SWM341_DMA2D_RGB888 1
+#define LV_SWM341_DMA2D_RGB565 2
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+typedef lv_draw_sw_ctx_t lv_draw_swm341_dma2d_ctx_t;
+
+struct _lv_disp_drv_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Turn on the peripheral and set output color mode, this only needs to be done once
+ */
+void lv_draw_swm341_dma2d_init(void);
+
+void lv_draw_swm341_dma2d_ctx_init(struct _lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx);
+
+void lv_draw_swm341_dma2d_ctx_deinit(struct _lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx);
+
+void lv_draw_swm341_dma2d_blend(lv_draw_ctx_t * draw_ctx, const lv_draw_sw_blend_dsc_t * dsc);
+
+void lv_gpu_swm341_dma2d_wait_cb(lv_draw_ctx_t * draw_ctx);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif  /*LV_USE_GPU_SWM341_DMA2D*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_GPU_SWM341_DMA2D_H*/