libavfilter/af_channelsplit.c File Reference

Channel split filter. More...

#include "libavutil/audioconvert.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "audio.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	ChannelSplitContext
Defines
#define	OFFSET(x)   offsetof(ChannelSplitContext, x)
#define	A   AV_OPT_FLAG_AUDIO_PARAM
#define	F   AV_OPT_FLAG_FILTERING_PARAM
Functions
	AVFILTER_DEFINE_CLASS (channelsplit)
static int	init (AVFilterContext *ctx, const char *arg)
static int	query_formats (AVFilterContext *ctx)
static int	filter_samples (AVFilterLink *inlink, AVFilterBufferRef *buf)
Variables
static const AVOption	channelsplit_options []
AVFilter	avfilter_af_channelsplit

---

Detailed Description

Channel split filter.

Split an audio stream into per-channel streams.

Definition in file af_channelsplit.c.

---

Define Documentation

#define A   AV_OPT_FLAG_AUDIO_PARAM

Definition at line 43 of file af_channelsplit.c.

#define F   AV_OPT_FLAG_FILTERING_PARAM

Definition at line 44 of file af_channelsplit.c.

#define OFFSET

(

x

)

offsetof(ChannelSplitContext, x)

Definition at line 42 of file af_channelsplit.c.

---

Function Documentation

AVFILTER_DEFINE_CLASS

(

channelsplit

)

static int filter_samples	(	AVFilterLink *	inlink,
		AVFilterBufferRef *	buf
	)			[static]

Definition at line 108 of file af_channelsplit.c.

static int init	(	AVFilterContext *	ctx,
		const char *	arg
	)			[static]

Definition at line 52 of file af_channelsplit.c.

static int query_formats

(

AVFilterContext *

ctx

)

[static]

Definition at line 85 of file af_channelsplit.c.

---

Variable Documentation

AVFilter avfilter_af_channelsplit

Initial value:

 {
    .name           = "channelsplit",
    .description    = NULL_IF_CONFIG_SMALL("Split audio into per-channel streams"),
    .priv_size      = sizeof(ChannelSplitContext),

    .init           = init,
    .query_formats  = query_formats,

    .inputs  = (const AVFilterPad[]){{ .name           = "default",
                                       .type           = AVMEDIA_TYPE_AUDIO,
                                       .filter_samples = filter_samples, },
                                     { NULL }},
    .outputs = NULL,
    .priv_class = &channelsplit_class,
}

Definition at line 133 of file af_channelsplit.c.

const AVOption channelsplit_options[] [static]

Initial value:

 {
    { "channel_layout", "Input channel layout.", OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, { .str = "stereo" }, .flags = A|F },
    { NULL },
}

Definition at line 45 of file af_channelsplit.c.