feat(image_cache): add image header cache drop (#5472)

Signed-off-by: Xu Xingliang <xuxingliang@xiaomi.com>
Co-authored-by: Xu Xingliang <xuxingliang@xiaomi.com>

src/misc/cache/lv_image_cache.c

@@ -13,6 +13,7 @@
  *      DEFINES
  *********************/
 #define img_cache_p (LV_GLOBAL_DEFAULT()->img_cache)
+#define img_header_cache_p (LV_GLOBAL_DEFAULT()->img_header_cache)
 /**********************
  *      TYPEDEFS
  **********************/
@@ -38,6 +39,9 @@
  **********************/
 void lv_image_cache_drop(const void * src)
 {
+    /*If user invalidate image, the header cache should be invalidated too.*/
+    lv_image_header_cache_drop(src);
+
 #if LV_CACHE_DEF_SIZE > 0
     if(src == NULL) {
         lv_cache_drop_all(img_cache_p, NULL);
@@ -54,6 +58,26 @@ void lv_image_cache_drop(const void * src)
     LV_UNUSED(src);
 #endif
 }
+
+void lv_image_header_cache_drop(const void * src)
+{
+#if LV_IMAGE_HEADER_CACHE_DEF_CNT > 0
+    if(src == NULL) {
+        lv_cache_drop_all(img_header_cache_p, NULL);
+        return;
+    }
+
+    lv_image_header_cache_data_t search_key = {
+        .src = src,
+        .src_type = lv_image_src_get_type(src),
+    };
+
+    lv_cache_drop(img_header_cache_p, &search_key, NULL);
+#else
+    LV_UNUSED(src);
+#endif
+}
+
 /**********************
  *   STATIC FUNCTIONS
  **********************/

src/misc/cache/lv_image_cache.h

@@ -26,7 +26,20 @@ extern "C" {
 /**********************
  * GLOBAL PROTOTYPES
  **********************/
+
+/**
+ * Invalidate image cache. Use NULL to invalidate all images.
+ * @param src pointer to an image source.
+ */
 void lv_image_cache_drop(const void * src);
+
+/**
+ * Invalidate image header cache. Use NULL to invalidate all image headers.
+ * It's also automatically called when an image is invalidated.
+ * @param src pointer to an image source.
+ */
+void lv_image_header_cache_drop(const void * src);
+
 /*************************
  *    GLOBAL VARIABLES
  *************************/