Data Structures

struct   AVBufferRef

  A reference to a data buffer. More...

 

Macros

#define  AV_BUFFER_FLAG_READONLY   (1 << 0)

  Always treat the buffer as read-only, even when it has only one reference.

 

Functions

AVBufferRef *  av_buffer_alloc (size_t size)

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

 

AVBufferRef *  av_buffer_allocz (size_t size)

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

 

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.

 

void  av_buffer_default_free (void *opaque, uint8_t *data)

  Default free callback, which calls av_free() on the buffer data.

 

AVBufferRef *  av_buffer_ref (const AVBufferRef *buf)

  Create a new reference to an AVBuffer.

 

void  av_buffer_unref (AVBufferRef **buf)

  Free a given reference and automatically free the buffer if there are no more references to it.

 

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 **buf)

  Create a writable reference from a given buffer reference, avoiding data copy if possible.

 

int  av_buffer_realloc (AVBufferRef **buf, size_t size)

  Reallocate a given buffer.

 

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

  Ensure dst refers to the same data as src.

 

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

  Allocate and initialize a buffer pool.

 

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.

 

void  av_buffer_pool_uninit (AVBufferPool **pool)

  Mark the pool as being available for freeing.

 

AVBufferRef *  av_buffer_pool_get (AVBufferPool *pool)

  Allocate a new AVBuffer, reusing an old buffer from the pool when available.

 

void *  av_buffer_pool_buffer_get_opaque (const AVBufferRef *ref)

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