framepool.h File Reference

#include "libavutil/buffer.h"
#include "libavutil/frame.h"

Go to the source code of this file.

Functions
FFVideoFramePool *	ff_video_frame_pool_init (AVBufferRef *(*alloc)(int size), int width, int height, enum AVPixelFormat format, int align)
	Allocate and initialize a video frame pool. More...
void	ff_video_frame_pool_uninit (FFVideoFramePool **pool)
	Deallocate the video frame pool. More...
int	ff_video_frame_pool_get_config (FFVideoFramePool *pool, int *width, int *height, enum AVPixelFormat *format, int *align)
	Get the video frame pool configuration. More...
AVFrame *	ff_video_frame_pool_get (FFVideoFramePool *pool)
	Allocate a new AVFrame, reussing old buffers from the pool when available. More...

Function Documentation

FFVideoFramePool* ff_video_frame_pool_init	(	AVBufferRef *(*)(int size)	alloc,
		int	width,
		int	height,
		enum AVPixelFormat	format,
		int	align
	)

Allocate and initialize a video frame pool.

Parameters

alloc	a function that will be used to allocate new frame buffers when the pool is empty. May be NULL, then the default allocator will be used (av_buffer_alloc()).
width	width of each frame in this pool
height	height of each frame in this pool
format	format of each frame in this pool
align	buffers alignement of each frame in this pool

Returns

newly created video frame pool on success, NULL on error.

Definition at line 40 of file framepool.c.

Referenced by ff_default_get_video_buffer().

void ff_video_frame_pool_uninit

(

FFVideoFramePool **

pool

)

Deallocate the video frame pool.

It is safe to call this function while some of the allocated video frame are still in use.

Parameters

pool	pointer to the video frame pool to be freed. It will be set to NULL.

Definition at line 177 of file framepool.c.

Referenced by avfilter_link_free(), ff_default_get_video_buffer(), and ff_video_frame_pool_init().

int ff_video_frame_pool_get_config	(	FFVideoFramePool *	pool,
		int *	width,
		int *	height,
		enum AVPixelFormat *	format,
		int *	align
	)

Get the video frame pool configuration.

Parameters

width	width of each frame in this pool
height	height of each frame in this pool
format	format of each frame in this pool
align	buffers alignement of each frame in this pool

Returns

0 on success, a negative AVERROR otherwise.

Definition at line 107 of file framepool.c.

Referenced by ff_default_get_video_buffer().

AVFrame* ff_video_frame_pool_get

(

FFVideoFramePool *

pool

)

Allocate a new AVFrame, reussing old buffers from the pool when available.

This function may be called simultaneously from multiple threads.

Returns

a new AVFrame on success, NULL on error.

Definition at line 125 of file framepool.c.

Referenced by ff_default_get_video_buffer().