buffer.c File Reference
#include <stdatomic.h>
#include <stdint.h>
#include <string.h>
#include "avassert.h"
#include "buffer_internal.h"
#include "common.h"
#include "mem.h"
#include "thread.h"

Go to the source code of this file.


AVBufferRefav_buffer_create (uint8_t *data, buffer_size_t size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)
 Create an AVBuffer from an existing array. More...
void av_buffer_default_free (void *opaque, uint8_t *data)
 Default free callback, which calls av_free() on the buffer data. More...
AVBufferRefav_buffer_alloc (buffer_size_t size)
 Allocate an AVBuffer of the given size using av_malloc(). More...
AVBufferRefav_buffer_allocz (buffer_size_t size)
 Same as av_buffer_alloc(), except the returned buffer will be initialized to zero. More...
AVBufferRefav_buffer_ref (AVBufferRef *buf)
 Create a new reference to an AVBuffer. More...
static void buffer_replace (AVBufferRef **dst, AVBufferRef **src)
void av_buffer_unref (AVBufferRef **buf)
 Free a given reference and automatically free the buffer if there are no more references to it. More...
int av_buffer_is_writable (const AVBufferRef *buf)
void * av_buffer_get_opaque (const AVBufferRef *buf)
int av_buffer_get_ref_count (const AVBufferRef *buf)
int av_buffer_make_writable (AVBufferRef **pbuf)
 Create a writable reference from a given buffer reference, avoiding data copy if possible. More...
int av_buffer_realloc (AVBufferRef **pbuf, buffer_size_t size)
 Reallocate a given buffer. More...
int av_buffer_replace (AVBufferRef **pdst, AVBufferRef *src)
 Ensure dst refers to the same data as src. More...
AVBufferPoolav_buffer_pool_init2 (buffer_size_t size, void *opaque, AVBufferRef *(*alloc)(void *opaque, buffer_size_t size), void(*pool_free)(void *opaque))
 Allocate and initialize a buffer pool with a more complex allocator. More...
AVBufferPoolav_buffer_pool_init (buffer_size_t size, AVBufferRef *(*alloc)(buffer_size_t size))
 Allocate and initialize a buffer pool. More...
static void buffer_pool_flush (AVBufferPool *pool)
static void buffer_pool_free (AVBufferPool *pool)
void av_buffer_pool_uninit (AVBufferPool **ppool)
 Mark the pool as being available for freeing. More...
static void pool_release_buffer (void *opaque, uint8_t *data)
static AVBufferRefpool_alloc_buffer (AVBufferPool *pool)
AVBufferRefav_buffer_pool_get (AVBufferPool *pool)
 Allocate a new AVBuffer, reusing an old buffer from the pool when available. More...
void * av_buffer_pool_buffer_get_opaque (AVBufferRef *ref)
 Query the original opaque parameter of an allocated buffer in the pool. More...

Function Documentation

◆ buffer_replace()

static void buffer_replace ( AVBufferRef **  dst,
AVBufferRef **  src 

Definition at line 107 of file buffer.c.

Referenced by av_buffer_make_writable(), av_buffer_realloc(), and av_buffer_unref().

◆ buffer_pool_flush()

static void buffer_pool_flush ( AVBufferPool pool)

Definition at line 282 of file buffer.c.

Referenced by av_buffer_pool_uninit(), and buffer_pool_free().

◆ buffer_pool_free()

static void buffer_pool_free ( AVBufferPool pool)

Definition at line 297 of file buffer.c.

Referenced by av_buffer_pool_uninit(), and pool_release_buffer().

◆ pool_release_buffer()

static void pool_release_buffer ( void *  opaque,
uint8_t data 

Definition at line 325 of file buffer.c.

Referenced by av_buffer_pool_get(), and pool_alloc_buffer().

◆ pool_alloc_buffer()

static AVBufferRef* pool_alloc_buffer ( AVBufferPool pool)

Definition at line 344 of file buffer.c.

Referenced by av_buffer_pool_get().