af_stereowiden.c File Reference

#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "audio.h"
#include "formats.h"

Go to the source code of this file.

Data Structures
struct	StereoWidenContext

Macros
#define	OFFSET(x)   offsetof(StereoWidenContext, x)
#define	A   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
#define	AT   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Functions
	AVFILTER_DEFINE_CLASS (stereowiden)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	stereowiden_options []
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
const AVFilter	ff_af_stereowiden

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(StereoWidenContext, x)

Definition at line 41 of file af_stereowiden.c.

A

#define A   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 42 of file af_stereowiden.c.

AT

#define AT   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 43 of file af_stereowiden.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

stereowiden

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 55 of file af_stereowiden.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 70 of file af_stereowiden.c.

filter_frame()

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

static

Definition at line 85 of file af_stereowiden.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 133 of file af_stereowiden.c.

Variable Documentation

stereowiden_options

const AVOption stereowiden_options[]

static

Initial value:

= {
    { "delay",     "set delay time",    OFFSET(delay),     AV_OPT_TYPE_FLOAT, {.dbl=20}, 1, 100, A },
    { "feedback",  "set feedback gain", OFFSET(feedback),  AV_OPT_TYPE_FLOAT, {.dbl=.3}, 0, 0.9, AT },
    { "crossfeed", "set cross feed",    OFFSET(crossfeed), AV_OPT_TYPE_FLOAT, {.dbl=.3}, 0, 0.8, AT },
    { "drymix",    "set dry-mix",       OFFSET(drymix),    AV_OPT_TYPE_FLOAT, {.dbl=.8}, 0, 1.0, AT },
    { NULL }
}

Definition at line 45 of file af_stereowiden.c.

inputs

const AVFilterPad inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_AUDIO,
        .filter_frame = filter_frame,
        .config_props = config_input,
    },
}

Definition at line 140 of file af_stereowiden.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 149 of file af_stereowiden.c.

ff_af_stereowiden

const AVFilter ff_af_stereowiden

Initial value:

= {
    .name           = "stereowiden",
    .description    = NULL_IF_CONFIG_SMALL("Apply stereo widening effect."),
    .priv_size      = sizeof(StereoWidenContext),
    .priv_class     = &stereowiden_class,
    .uninit         = uninit,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(outputs),
    FILTER_QUERY_FUNC(query_formats),
    .flags          = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
    .process_command = ff_filter_process_command,
}

Definition at line 156 of file af_stereowiden.c.