af_adecorrelate.c File Reference

#include "libavutil/channel_layout.h"
#include "libavutil/ffmath.h"
#include "libavutil/lfg.h"
#include "libavutil/mem.h"
#include "libavutil/random_seed.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "audio.h"
#include "filters.h"

Go to the source code of this file.

Data Structures
struct	APContext
struct	ADecorrelateContext
struct	ThreadData
	Used for passing data between threads. More...

Macros
#define	MAX_STAGES   16
#define	FILTER_FC   1100.0
#define	RT60_LF   0.1
#define	RT60_HF   0.008
#define	OFFSET(x)   offsetof(ADecorrelateContext, x)
#define	FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Functions
static int	ap_init (APContext *ap, int fs, double delay)
static void	ap_free (APContext *ap)
static double	ap_run (APContext *ap, double x)
static void	filter_channel_dbl (AVFilterContext *ctx, int ch, AVFrame *in, AVFrame *out)
static int	config_input (AVFilterLink *inlink)
static int	filter_channels (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static av_cold void	uninit (AVFilterContext *ctx)
	AVFILTER_DEFINE_CLASS (adecorrelate)

Variables
static const AVOption	adecorrelate_options []
static const AVFilterPad	inputs []
const AVFilter	ff_af_adecorrelate

Macro Definition Documentation

MAX_STAGES

#define MAX_STAGES   16

Definition at line 32 of file af_adecorrelate.c.

FILTER_FC

#define FILTER_FC   1100.0

Definition at line 33 of file af_adecorrelate.c.

RT60_LF

#define RT60_LF   0.1

Definition at line 34 of file af_adecorrelate.c.

RT60_HF

#define RT60_HF   0.008

Definition at line 35 of file af_adecorrelate.c.

OFFSET

#define OFFSET

(

x

)

offsetof(ADecorrelateContext, x)

Definition at line 214 of file af_adecorrelate.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 215 of file af_adecorrelate.c.

Function Documentation

ap_init()

static int ap_init ( APContext *  ap, int  fs, double  delay  )

static

Definition at line 59 of file af_adecorrelate.c.

Referenced by config_input().

ap_free()

static void ap_free ( APContext *  ap )

static

Definition at line 86 of file af_adecorrelate.c.

Referenced by uninit().

ap_run()

static double ap_run ( APContext *  ap, double  x  )

static

Definition at line 92 of file af_adecorrelate.c.

Referenced by filter_channel_dbl().

filter_channel_dbl()

static void filter_channel_dbl ( AVFilterContext *  ctx, int  ch, AVFrame *  in, AVFrame *  out  )

static

Definition at line 105 of file af_adecorrelate.c.

Referenced by config_input().

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 125 of file af_adecorrelate.c.

filter_channels()

static int filter_channels ( AVFilterContext *  ctx, void *  arg, int  jobnr, int  nb_jobs  )

static

Definition at line 158 of file af_adecorrelate.c.

Referenced by filter_frame().

filter_frame()

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

static

Definition at line 173 of file af_adecorrelate.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 200 of file af_adecorrelate.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

adecorrelate

)

Variable Documentation

adecorrelate_options

const AVOption adecorrelate_options[]

static

Initial value:

= {
    { "stages", "set filtering stages", OFFSET(stages), AV_OPT_TYPE_INT,    {.i64=6},   1, MAX_STAGES, FLAGS },
    { "seed",   "set random seed",      OFFSET(seed),   AV_OPT_TYPE_INT64,  {.i64=-1}, -1,   UINT_MAX, FLAGS },
    { NULL }
}

Definition at line 217 of file af_adecorrelate.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 225 of file af_adecorrelate.c.

ff_af_adecorrelate

const AVFilter ff_af_adecorrelate

Initial value:

= {
    .name            = "adecorrelate",
    .description     = NULL_IF_CONFIG_SMALL("Apply decorrelation to input audio."),
    .priv_size       = sizeof(ADecorrelateContext),
    .priv_class      = &adecorrelate_class,
    .uninit          = uninit,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(ff_audio_default_filterpad),
    FILTER_SINGLE_SAMPLEFMT(AV_SAMPLE_FMT_DBLP),
    .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC |
                       AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 234 of file af_adecorrelate.c.