af_aconvert.c File Reference

sample format and channel layout conversion audio filter More...

#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "libswresample/swresample.h"
#include "avfilter.h"
#include "audio.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	AConvertContext

Macros
#define	OFFSET(x)   offsetof(AConvertContext, x)
#define	A   AV_OPT_FLAG_AUDIO_PARAM
#define	F   AV_OPT_FLAG_FILTERING_PARAM

Functions
	AVFILTER_DEFINE_CLASS (aconvert)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	config_output (AVFilterLink *outlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *insamplesref)

Variables
static const AVOption	aconvert_options []
static const AVFilterPad	aconvert_inputs []
static const AVFilterPad	aconvert_outputs []
AVFilter	ff_af_aconvert

Detailed Description

sample format and channel layout conversion audio filter

Definition in file af_aconvert.c.

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(AConvertContext, x)

Definition at line 44 of file af_aconvert.c.

#define A   AV_OPT_FLAG_AUDIO_PARAM

Definition at line 45 of file af_aconvert.c.

#define F   AV_OPT_FLAG_FILTERING_PARAM

Definition at line 46 of file af_aconvert.c.

Referenced by idct().

Function Documentation

AVFILTER_DEFINE_CLASS

(

aconvert

)

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 55 of file af_aconvert.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 73 of file af_aconvert.c.

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 79 of file af_aconvert.c.

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 110 of file af_aconvert.c.

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  insamplesref  )

static

Definition at line 146 of file af_aconvert.c.

Variable Documentation

const AVOption aconvert_options[]

static

Initial value:

= {
    { "sample_fmt",     "", OFFSET(format_str),         AV_OPT_TYPE_STRING, .flags = A|F },
    { "channel_layout", "", OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, .flags = A|F },
    { NULL }
}

Definition at line 47 of file af_aconvert.c.

const AVFilterPad aconvert_inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_AUDIO,
        .filter_frame = filter_frame,
    },
    { NULL }
}

Definition at line 168 of file af_aconvert.c.

const AVFilterPad aconvert_outputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_AUDIO,
        .config_props = config_output,
    },
    { NULL }
}

Definition at line 177 of file af_aconvert.c.

AVFilter ff_af_aconvert

Initial value:

= {
    .name          = "aconvert",
    .description   = NULL_IF_CONFIG_SMALL("Convert the input audio to sample_fmt:channel_layout."),
    .priv_size     = sizeof(AConvertContext),
    .priv_class    = &aconvert_class,
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = aconvert_inputs,
    .outputs       = aconvert_outputs,
}

Definition at line 186 of file af_aconvert.c.