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avutil/buffer: add av_buffer_pool_buffer_get_opaque

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In order to access the original opaque parameter of a buffer in the buffer
pool. (The buffer pool implementation overrides the normal opaque parameter but
also saves it so it is accessible).

v2: add assertion check before dereferencing the BufferPoolEntry.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2019-12-07 01:56:56 +01:00
parent e3dca0744d
commit 16685114d5
4 changed files with 26 additions and 2 deletions
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8
libavutil/buffer.c
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@ -20,6 +20,7 @@
#include <stdint.h>
#include <string.h>
#include "avassert.h"
#include "buffer_internal.h"
#include "common.h"
#include "mem.h"
@ -355,3 +356,10 @@ AVBufferRef *av_buffer_pool_get(AVBufferPool *pool)
return ret;
}
void *av_buffer_pool_buffer_get_opaque(AVBufferRef *ref)
{
BufferPoolEntry *buf = ref->buffer->opaque;
av_assert0(buf);
return buf->opaque;
}