FFmpeg: libavutil/buffer.c File Reference

FFmpeg

libavutil

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.

Functions

static AVBufferRef * buffer_create (AVBuffer *buf, uint8_t *data, size_t size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)

AVBufferRef * av_buffer_create (uint8_t *data, 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...

AVBufferRef * av_buffer_alloc (size_t size)

Allocate an AVBuffer of the given size using av_malloc(). More...

AVBufferRef * av_buffer_allocz (size_t size)

Same as av_buffer_alloc(), except the returned buffer will be initialized to zero. More...

AVBufferRef * av_buffer_ref (const 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, size_t size)

Reallocate a given buffer. More...

int av_buffer_replace (AVBufferRef **pdst, const AVBufferRef *src)

Ensure dst refers to the same data as src. More...

AVBufferPool * av_buffer_pool_init2 (size_t size, void *opaque, AVBufferRef *(*alloc)(void *opaque, size_t size), void(*pool_free)(void *opaque))

Allocate and initialize a buffer pool with a more complex allocator. More...

AVBufferPool * av_buffer_pool_init (size_t size, AVBufferRef *(*alloc)(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 AVBufferRef * pool_alloc_buffer (AVBufferPool *pool)

AVBufferRef * av_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 (const AVBufferRef *ref)

Query the original opaque parameter of an allocated buffer in the pool. More...

Function Documentation

◆ buffer_create()

static AVBufferRef* buffer_create ( AVBuffer * buf,

uint8_t * data,

size_t size,

void(*)(void *opaque, uint8_t *data) free,

void * opaque,

int flags

)

static

Definition at line 29 of file buffer.c.

Referenced by av_buffer_create(), and av_buffer_pool_get().

◆ buffer_replace()

static void buffer_replace ( AVBufferRef ** dst,

AVBufferRef ** src

)

static

Definition at line 117 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 )

static

Definition at line 302 of file buffer.c.

Referenced by av_buffer_pool_uninit(), and buffer_pool_free().

◆ buffer_pool_free()

static void buffer_pool_free ( AVBufferPool * pool )

static

Definition at line 317 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

)

static

Definition at line 345 of file buffer.c.

Referenced by av_buffer_pool_get(), and pool_alloc_buffer().

◆ pool_alloc_buffer()

static AVBufferRef* pool_alloc_buffer ( AVBufferPool * pool )

static

Definition at line 361 of file buffer.c.

Referenced by av_buffer_pool_get().

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