libavfilter/src_buffer.c File Reference

memory buffer source filter More...

#include "avfilter.h"
#include "internal.h"
#include "audio.h"
#include "avcodec.h"
#include "buffersrc.h"
#include "vsrc_buffer.h"
#include "asrc_abuffer.h"
#include "libavutil/audioconvert.h"
#include "libavutil/avstring.h"
#include "libavutil/fifo.h"
#include "libavutil/imgutils.h"

Go to the source code of this file.

Data Structures
struct	BufferSourceContext
Functions
static void	buf_free (AVFilterBuffer *ptr)
int	av_vsrc_buffer_add_video_buffer_ref (AVFilterContext *buffer_filter, AVFilterBufferRef *picref, int flags)
	Add video buffer data in picref to buffer_src.
unsigned	av_vsrc_buffer_get_nb_failed_requests (AVFilterContext *buffer_src)
	Get the number of failed requests.
int	av_asrc_buffer_add_audio_buffer_ref (AVFilterContext *ctx, AVFilterBufferRef *samplesref, int av_unused flags)
	Queue an audio buffer to the audio buffer source.
int	av_asrc_buffer_add_samples (AVFilterContext *ctx, uint8_t *data[8], int linesize[8], int nb_samples, int sample_rate, int sample_fmt, int64_t channel_layout, int planar, int64_t pts, int av_unused flags)
	Queue an audio buffer to the audio buffer source.
int	av_asrc_buffer_add_buffer (AVFilterContext *ctx, uint8_t *buf, int buf_size, int sample_rate, int sample_fmt, int64_t channel_layout, int planar, int64_t pts, int av_unused flags)
	Queue an audio buffer to the audio buffer source.

---

Detailed Description

memory buffer source filter

Definition in file src_buffer.c.

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Function Documentation

int av_asrc_buffer_add_audio_buffer_ref	(	AVFilterContext *	abuffersrc,
		AVFilterBufferRef *	samplesref,
		int av_unused	flags
	)

Queue an audio buffer to the audio buffer source.

Parameters:

	abuffersrc	audio source buffer context
	samplesref	buffer ref to queue
	flags	unused

Deprecated:

use av_buffersrc_add_ref() instead.

Definition at line 91 of file src_buffer.c.

Referenced by av_asrc_buffer_add_samples().

int av_asrc_buffer_add_buffer	(	AVFilterContext *	abuffersrc,
		uint8_t *	buf,
		int	buf_size,
		int	sample_rate,
		int	sample_fmt,
		int64_t	ch_layout,
		int	planar,
		int64_t	pts,
		int av_unused	flags
	)

Queue an audio buffer to the audio buffer source.

This is similar to av_asrc_buffer_add_samples(), but the samples are stored in a buffer with known size.

Parameters:

	abuffersrc	audio source buffer context
	buf	pointer to the samples data, packed is assumed
	size	the size in bytes of the buffer, it must contain an integer number of samples
	sample_fmt	sample format of the audio data
	ch_layout	channel layout of the audio data
	pts	presentation timestamp of the audio buffer
	flags	unused

Deprecated:

use av_buffersrc_add_ref() instead.

Definition at line 122 of file src_buffer.c.

int av_asrc_buffer_add_samples	(	AVFilterContext *	abuffersrc,
		uint8_t *	data[8],
		int	linesize[8],
		int	nb_samples,
		int	sample_rate,
		int	sample_fmt,
		int64_t	ch_layout,
		int	planar,
		int64_t	pts,
		int av_unused	flags
	)

Queue an audio buffer to the audio buffer source.

Parameters:

	abuffersrc	audio source buffer context
	data	pointers to the samples planes
	linesize	linesizes of each audio buffer plane
	nb_samples	number of samples per channel
	sample_fmt	sample format of the audio data
	ch_layout	channel layout of the audio data
	planar	flag to indicate if audio data is planar or packed
	pts	presentation timestamp of the audio buffer
	flags	unused

Deprecated:

use av_buffersrc_add_ref() instead.

Definition at line 98 of file src_buffer.c.

Referenced by av_asrc_buffer_add_buffer().

int av_vsrc_buffer_add_video_buffer_ref	(	AVFilterContext *	buffer_src,
		AVFilterBufferRef *	picref,
		int	flags
	)

Add video buffer data in picref to buffer_src.

Parameters:

	buffer_src	pointer to a buffer source context
	flags	a combination of AV_VSRC_BUF_FLAG_* flags

Returns:

>= 0 in case of success, a negative AVERROR code in case of failure

Deprecated:

use av_buffersrc_add_ref() instead.

Definition at line 70 of file src_buffer.c.

unsigned av_vsrc_buffer_get_nb_failed_requests

(

AVFilterContext *

buffer_src

)

Get the number of failed requests.

A failed request is when the request_frame method is called while no frame is present in the buffer. The number is reset when a frame is added.

Deprecated:

use av_buffersrc_get_nb_failed_requests() instead.

Definition at line 86 of file src_buffer.c.

static void buf_free

(

AVFilterBuffer *

ptr

)

[static]

Definition at line 64 of file src_buffer.c.

Referenced by av_asrc_buffer_add_samples().