Function pool_release_buffer

libavutil/buffer.c:345–357

}

static void pool_release_buffer(void *opaque, uint8_t *data)
{
    BufferPoolEntry *buf = opaque;
    AVBufferPool *pool = buf->pool;

    ff_mutex_lock(&pool->mutex);
    buf->next = pool->pool;
    pool->pool = buf;
    ff_mutex_unlock(&pool->mutex);

    if (atomic_fetch_sub_explicit(&pool->refcount, 1, memory_order_acq_rel) == 1)
        buffer_pool_free(pool);
}

/* allocate a new buffer and override its free() callback so that
 * it is returned to the pool on free */