Libav
Data Structures | Macros | Functions | Variables
af_channelsplit.c File Reference

Channel split filter. More...

#include "libavutil/attributes.h"
#include "libavutil/channel_layout.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
 

Macros

#define OFFSET(x)   offsetof(ChannelSplitContext, x)
 
#define A   AV_OPT_FLAG_AUDIO_PARAM
 

Functions

static av_cold int init (AVFilterContext *ctx)
 
static int query_formats (AVFilterContext *ctx)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *buf)
 

Variables

static const AVOption options []
 
static const AVClass channelsplit_class
 
static const AVFilterPad avfilter_af_channelsplit_inputs []
 
AVFilter ff_af_channelsplit
 

Detailed Description

Channel split filter.

Split an audio stream into per-channel streams.

Definition in file af_channelsplit.c.

Macro Definition Documentation

#define OFFSET (   x)    offsetof(ChannelSplitContext, x)

Definition at line 43 of file af_channelsplit.c.

#define A   AV_OPT_FLAG_AUDIO_PARAM

Definition at line 44 of file af_channelsplit.c.

Function Documentation

static av_cold int init ( AVFilterContext ctx)
static

Definition at line 57 of file af_channelsplit.c.

static int query_formats ( AVFilterContext ctx)
static

Definition at line 85 of file af_channelsplit.c.

static int filter_frame ( AVFilterLink inlink,
AVFrame buf 
)
static

Definition at line 108 of file af_channelsplit.c.

Variable Documentation

const AVOption options[]
static
Initial value:
= {
{ "channel_layout", "Input channel layout.", OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, { .str = "stereo" }, .flags = A },
{ NULL },
}
#define A
#define OFFSET(x)
NULL
Definition: eval.c:55

Definition at line 45 of file af_channelsplit.c.

const AVClass channelsplit_class
static
Initial value:
= {
.class_name = "channelsplit filter",
.item_name = av_default_item_name,
.option = options,
}
static const AVOption options[]
LIBAVUTIL_VERSION_INT
Definition: eval.c:55
av_default_item_name
Definition: dnxhdenc.c:45

Definition at line 50 of file af_channelsplit.c.

const AVFilterPad avfilter_af_channelsplit_inputs[]
static
Initial value:
= {
{
.name = "default",
.filter_frame = filter_frame,
},
{ NULL }
}
static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
NULL
Definition: eval.c:55

Definition at line 133 of file af_channelsplit.c.

AVFilter ff_af_channelsplit
Initial value:
= {
.name = "channelsplit",
.description = NULL_IF_CONFIG_SMALL("Split audio into per-channel streams"),
.priv_size = sizeof(ChannelSplitContext),
.priv_class = &channelsplit_class,
.init = init,
}
static const AVFilterPad outputs[]
Definition: af_ashowinfo.c:122
static const AVClass channelsplit_class
static int flags
Definition: log.c:44
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
Definition: avfilter.h:410
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:142
static const AVFilterPad avfilter_af_channelsplit_inputs[]
NULL
Definition: eval.c:55
static const AVFilterPad inputs[]
Definition: af_ashowinfo.c:111
static av_cold int init(AVFilterContext *ctx)
static int query_formats(AVFilterContext *ctx)

Definition at line 142 of file af_channelsplit.c.