lv_image_header_cache.h

Functions

lv_result_t lv_image_header_cache_init(uint32_t count)

Initialize image header cache.

参数:

count -- initial size of the cache in count of image headers.

返回:

LV_RESULT_OK: initialization succeeded, LV_RESULT_INVALID: failed.

void lv_image_header_cache_resize(uint32_t count, bool evict_now)

Resize image header cache. If set to 0, the cache is disabled.

参数:

• count -- new max count of cached image headers.

• evict_now -- true: evict the image headers should be removed by the eviction policy, false: wait for the next cache cleanup.

void lv_image_header_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.

参数:

src -- pointer to an image source.

bool lv_image_header_cache_is_enabled(void)

Return true if the image header cache is enabled.

返回:

true: enabled, false: disabled.

lv_iter_t *lv_image_header_cache_iter_create(void)

Create an iterator to iterate over the image header cache.

返回:

an iterator to iterate over the image header cache.

void lv_image_header_cache_dump(void)

Dump the content of the image header cache in a human-readable format with cache order.