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vo_gpu_next: don't re-save unmodified cache

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Backwards compatibility wrapper can be bumped once sufficient libplacebo
version is a minimum dependency.

See-Also: https://github.com/mpv-player/mpv/pull/12902
This commit is contained in:
Niklas Haas 2023-11-19 14:24:34 +01:00 committed by sfan5
parent e62dac8338
commit 70db887553
1 changed files with 18 additions and 0 deletions
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18
video/out/vo_gpu_next.c
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@ -92,6 +92,7 @@ struct frame_info {
struct cache { struct cache {
char *path; char *path;
pl_cache cache; pl_cache cache;
uint64_t sig;
}; };
struct priv { struct priv {
@ -1512,6 +1513,20 @@ static void wait_events(struct vo *vo, int64_t until_time_ns)
} }
} }
#if PL_API_VER < 342
static inline void xor_hash(void *hash, pl_cache_obj obj)
{
*((uint64_t *) hash) ^= obj.key;
}
static inline uint64_t pl_cache_signature(pl_cache cache)
{
uint64_t hash = 0;
pl_cache_iterate(cache, xor_hash, &hash);
return hash;
}
#endif
static void cache_init(struct vo *vo, struct cache *cache, size_t max_size, static void cache_init(struct vo *vo, struct cache *cache, size_t max_size,
const char *dir_opt) const char *dir_opt)
{ {
@ -1542,6 +1557,7 @@ static void cache_init(struct vo *vo, struct cache *cache, size_t max_size,
MP_WARN(p, "Failed loading cache from %s\n", cache->path); MP_WARN(p, "Failed loading cache from %s\n", cache->path);
} }
cache->sig = pl_cache_signature(cache->cache);
done: done:
talloc_free(dir); talloc_free(dir);
} }
@ -1550,6 +1566,8 @@ static void cache_uninit(struct priv *p, struct cache *cache)
{ {
if (!cache->cache) if (!cache->cache)
goto done; goto done;
if (pl_cache_signature(cache->cache) == cache->sig)
goto done; // skip re-saving identical cache
assert(cache->path); assert(cache->path);
char *tmp = talloc_asprintf(cache->path, "%sXXXXXX", cache->path); char *tmp = talloc_asprintf(cache->path, "%sXXXXXX", cache->path);