load /mnt/extsd/resource/OSD/GOGGLE/wallpaper.bmp

src/core/main.c

@@ -135,6 +135,12 @@ void lvgl_init() {
                                               false, LV_FONT_DEFAULT);
     lv_disp_set_theme(dispp, theme);
     lv_obj_set_style_bg_color(lv_scr_act(), lv_color_make(64, 64, 64), 0);
+
+    // user wallpaper
+    if (load_wallpaper("/mnt/extsd/resource/OSD/GOGGLE/wallpaper.bmp")) {
+        lv_obj_t *img_obj = lv_img_create(lv_scr_act());
+        lv_img_set_src(img_obj, &img_menu_bg);
+    }
 }
 
 int main(int argc, char *argv[]) {

src/core/osd.c

@@ -992,6 +992,81 @@ void osd_shadow_clear(void) {
     }
 }
 
+///////////////////////////////////////////////////////////////////////////////
+// load_bmp_file
+int load_bmp_image(const char *file, uint32_t *obuf, int width, int height) {
+    char *buf;
+    struct stat stFile;
+    FILE *fd;
+    int size, rd;
+    int line_size;
+
+    fd = fopen(file, "rb");
+    if (fd == NULL) {
+        LOGE("%s cannot open", file);
+        return 0;
+    }
+
+    // get file size
+    fseek(fd, 0, SEEK_END);
+    size = ftell(fd);
+    fseek(fd, 0, SEEK_SET);
+
+    buf = (unsigned char *)malloc(size);
+    if (buf == NULL) {
+        LOGE("%s error 1", file);
+        return 0;
+    }
+
+    rd = fread(buf, 1, size, fd);
+    if (rd != size) {
+        LOGE("%s error 2", file);
+        free(buf);
+        return 0;
+    }
+
+    fclose(fd);
+
+    // check image size
+    bmpFileHead *bmp = (bmpFileHead *)buf;
+    char *pb = buf + sizeof(bmpFileHead) + bmp->info.biClrUsed;
+    if (bmp->info.biWidth != width || bmp->info.biHeight != height) {
+        LOGE("%s error 3", file);
+        free(buf);
+        return 0;
+    }
+
+    line_size = (width * 3 + 3) & 0xFFFC; // 4bytes align
+
+    int x, y;
+    uint32_t addr;
+
+    for (y = 0; y < height; y++) {
+        addr = y * line_size;
+        for (x = 0; x < width; x++)
+            obuf[(height - y - 1) * width + x] = (0xff << 24) + ((pb[addr + x * 3] & 0xff)) + ((pb[addr + x * 3 + 1] & 0xff) << 8) + ((pb[addr + x * 3 + 2] & 0xff) << 16);
+    }
+
+    free(buf);
+    return 1;
+}
+
+static uint32_t img_menu_bg_data[1920 * 1080]; // 0x00BBGGRR
+lv_img_dsc_t img_menu_bg;
+int load_wallpaper(char *file_path) {
+    if (load_bmp_image(file_path, img_menu_bg_data, 1920, 1080)) {
+        img_menu_bg.header.cf = LV_IMG_CF_TRUE_COLOR;
+        img_menu_bg.header.always_zero = 0;
+        img_menu_bg.header.reserved = 0;
+        img_menu_bg.header.w = 1920;
+        img_menu_bg.header.h = 1080;
+        img_menu_bg.data_size = 1920 * 1080 * LV_COLOR_SIZE / 8;
+        img_menu_bg.data = (uint8_t *)img_menu_bg_data;
+        return 1;
+    } else {
+        return 0;
+    }
+}
 ///////////////////////////////////////////////////////////////////////////////
 // Threads for updating FC OSD
 

src/core/osd.h

@@ -87,6 +87,7 @@ typedef struct {
 } osd_font_t;
 
 extern uint8_t channel_osd_mode;
+extern lv_img_dsc_t img_menu_bg;
 
 int osd_init(void);
 int osd_clear(void);
@@ -101,7 +102,7 @@ void load_fc_osd_font(uint8_t);
 void *thread_osd(void *ptr);
 void osd_resource_path(char *buf, const char *fmt, osd_resource_t osd_resource_type, ...);
 void osd_toggle();
-
+int load_wallpaper(char *file_path);
 #ifdef __cplusplus
 }
 #endif