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feat(img_cache): decouple the life flag from _lv_img_cache_entry_t (#3970)

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Signed-off-by: pengyiqiang <pengyiqiang@xiaomi.com>
This commit is contained in:
_VIFEXTech 2023-02-07 15:01:09 +08:00 committed by GitHub
parent 9a63653c42
commit cf48783f6f
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 17 additions and 12 deletions
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6
src/draw/lv_img_cache.h
View File

@ -30,11 +30,7 @@ extern "C" {
*/
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;
void * user_data; /**< Image cache entry user data*/
} _lv_img_cache_entry_t;
typedef struct {

23
src/draw/lv_img_cache_builtin.c
View File

@ -17,6 +17,13 @@
/*********************
* DEFINES
*********************/
/** 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*/
#define CACHE_GET_LIFE(entry) ((lv_intptr_t)((entry)->user_data))
#define CACHE_SET_LIFE(entry, v) ((entry)->user_data = (void*)((lv_intptr_t)(v)))
/*Decrement life with this value on every open*/
#define LV_IMG_CACHE_AGING 1
@ -100,8 +107,9 @@ static _lv_img_cache_entry_t * _lv_img_cache_open_builtin(const void * src, lv_c
/*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;
int32_t life = CACHE_GET_LIFE(&cache[i]);
if(life > INT32_MIN + LV_IMG_CACHE_AGING) {
CACHE_SET_LIFE(&cache[i], life - LV_IMG_CACHE_AGING);
}
}
@ -113,8 +121,9 @@ static _lv_img_cache_entry_t * _lv_img_cache_open_builtin(const void * src, lv_c
*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;
int32_t life = CACHE_GET_LIFE(cached_src);
CACHE_SET_LIFE(cached_src, life + cached_src->dec_dsc.time_to_open * LV_IMG_CACHE_LIFE_GAIN);
if(CACHE_GET_LIFE(cached_src) > LV_IMG_CACHE_LIFE_LIMIT) CACHE_SET_LIFE(cached_src, LV_IMG_CACHE_LIFE_LIMIT);
LV_LOG_TRACE("image source found in the cache");
break;
}
@ -126,7 +135,7 @@ static _lv_img_cache_entry_t * _lv_img_cache_open_builtin(const void * src, lv_c
/*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) {
if(CACHE_GET_LIFE(&cache[i]) < CACHE_GET_LIFE(cached_src)) {
cached_src = &cache[i];
}
}
@ -148,11 +157,11 @@ static _lv_img_cache_entry_t * _lv_img_cache_open_builtin(const void * src, lv_c
if(open_res == LV_RES_INV) {
LV_LOG_WARN("Image draw cannot open the image resource");
lv_memzero(cached_src, sizeof(_lv_img_cache_entry_t));
cached_src->life = INT32_MIN; /*Make the empty entry very "weak" to force its us*/
CACHE_SET_LIFE(cached_src, INT32_MIN); /*Make the empty entry very "weak" to force its us*/
return NULL;
}
cached_src->life = 0;
CACHE_SET_LIFE(cached_src, 0);
/*If `time_to_open` was not set in the open function set it here*/
if(cached_src->dec_dsc.time_to_open == 0) {