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


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


static int init (AVFilterContext *ctx, const char *arg)
static int query_formats (AVFilterContext *ctx)
static int filter_samples (AVFilterLink *inlink, AVFilterBufferRef *buf)


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


Definition at line 43 of file af_channelsplit.c.


Definition at line 44 of file af_channelsplit.c.

#define OFFSET (  )     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

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.

Generated on Fri Oct 26 02:50:09 2012 for FFmpeg by  doxygen 1.5.8