framepool.c File Reference

#include "framepool.h"
#include "libavutil/avassert.h"
#include "libavutil/avutil.h"
#include "libavutil/buffer.h"
#include "libavutil/frame.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/pixfmt.h"

Go to the source code of this file.

Data Structures
struct	FFFramePool
	Frame pool. More...

Functions
FFFramePool *	ff_frame_pool_video_init (AVBufferRef *(*alloc)(size_t size), int width, int height, enum AVPixelFormat format, int align)
	Allocate and initialize a video frame pool. More...
FFFramePool *	ff_frame_pool_audio_init (AVBufferRef *(*alloc)(size_t size), int channels, int nb_samples, enum AVSampleFormat format, int align)
	Allocate and initialize an audio frame pool. More...
int	ff_frame_pool_get_video_config (FFFramePool *pool, int *width, int *height, enum AVPixelFormat *format, int *align)
	Get the video frame pool configuration. More...
int	ff_frame_pool_get_audio_config (FFFramePool *pool, int *channels, int *nb_samples, enum AVSampleFormat *format, int *align)
	Get the audio frame pool configuration. More...
AVFrame *	ff_frame_pool_get (FFFramePool *pool)
	Allocate a new AVFrame, reussing old buffers from the pool when available. More...
void	ff_frame_pool_uninit (FFFramePool **pool)
	Deallocate the frame pool. More...

Function Documentation

ff_frame_pool_video_init()

FFFramePool* ff_frame_pool_video_init	(	AVBufferRef *(*)(size_t 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 51 of file framepool.c.

Referenced by ff_default_get_video_buffer2().

ff_frame_pool_audio_init()

FFFramePool* ff_frame_pool_audio_init	(	AVBufferRef *(*)(size_t size)	alloc,
		int	channels,
		int	samples,
		enum AVSampleFormat	format,
		int	align
	)

Allocate and initialize an audio 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()).
channels	channels of each frame in this pool
nb_samples	number of samples 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 audio frame pool on success, NULL on error.

Definition at line 114 of file framepool.c.

Referenced by ff_default_get_audio_buffer().

ff_frame_pool_get_video_config()

int ff_frame_pool_get_video_config	(	FFFramePool *	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 152 of file framepool.c.

Referenced by ff_default_get_video_buffer2().

ff_frame_pool_get_audio_config()

int ff_frame_pool_get_audio_config	(	FFFramePool *	pool,
		int *	channels,
		int *	nb_samples,
		enum AVSampleFormat *	format,
		int *	align
	)

Get the audio frame pool configuration.

Parameters

channels	channels of each frame in this pool
nb_samples	number of samples 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 171 of file framepool.c.

Referenced by ff_default_get_audio_buffer().

ff_frame_pool_get()

AVFrame* ff_frame_pool_get

(

FFFramePool *

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 190 of file framepool.c.

Referenced by ff_default_get_audio_buffer(), and ff_default_get_video_buffer2().

ff_frame_pool_uninit()

void ff_frame_pool_uninit

(

FFFramePool **

pool

)

Deallocate the frame pool.

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

Parameters

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

Definition at line 283 of file framepool.c.

Referenced by avfilter_link_free(), ff_default_get_audio_buffer(), ff_default_get_video_buffer2(), ff_frame_pool_audio_init(), and ff_frame_pool_video_init().