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Data Structures | Macros | Functions | Variables
af_adeclick.c File Reference
#include "libavutil/audio_fifo.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/tx.h"
#include "avfilter.h"
#include "audio.h"
#include "filters.h"

Go to the source code of this file.

Data Structures

struct  DeclickChannel
 
struct  AudioDeclickContext
 
struct  ThreadData
 Used for passing data between threads. More...
 

Macros

#define OFFSET(x)
 
#define AF   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 

Functions

 AVFILTER_DEFINE_CLASS (adeclick)
 
static int config_input (AVFilterLink *inlink)
 
static void autocorrelation (const double *input, int order, int size, double *output, double scale)
 
static double autoregression (const double *samples, int ar_order, int nb_samples, double *k, double *r, double *a)
 
static int isfinite_array (double *samples, int nb_samples)
 
static int find_index (int *index, int value, int size)
 
static int factorization (double *matrix, int n)
 
static int do_interpolation (DeclickChannel *c, double *matrix, double *vector, int n, double *out)
 
static int interpolation (DeclickChannel *c, const double *src, int ar_order, double *acoefficients, int *index, int nb_errors, double *auxiliary, double *interpolated)
 
static int detect_clips (AudioDeclickContext *s, DeclickChannel *c, double unused0, double *unused1, double *unused2, uint8_t *clip, int *index, const double *src, double *dst)
 
static int detect_clicks (AudioDeclickContext *s, DeclickChannel *c, double sigmae, double *detection, double *acoefficients, uint8_t *click, int *index, const double *src, double *dst)
 
static int filter_channel (AVFilterContext *ctx, void *arg, int ch, int nb_jobs)
 
static int filter_frame (AVFilterLink *inlink)
 
static int activate (AVFilterContext *ctx)
 
static av_cold int init (AVFilterContext *ctx)
 
static av_cold void uninit (AVFilterContext *ctx)
 
 AVFILTER_DEFINE_CLASS (adeclip)
 

Variables

static const AVOption adeclick_options []
 
static const AVFilterPad inputs []
 
const FFFilter ff_af_adeclick
 
static const AVOption adeclip_options []
 
const FFFilter ff_af_adeclip
 

Macro Definition Documentation

◆ OFFSET

#define OFFSET ( x)
Value:
offsetof(AudioDeclickContext, x)

Definition at line 91 of file af_adeclick.c.

◆ AF

#define AF   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 92 of file af_adeclick.c.

Function Documentation

◆ AVFILTER_DEFINE_CLASS() [1/2]

AVFILTER_DEFINE_CLASS ( adeclick )

◆ config_input()

static int config_input ( AVFilterLink * inlink)
static

Definition at line 116 of file af_adeclick.c.

◆ autocorrelation()

static void autocorrelation ( const double * input,
int order,
int size,
double * output,
double scale )
static

Definition at line 246 of file af_adeclick.c.

Referenced by autoregression(), and interpolation().

◆ autoregression()

static double autoregression ( const double * samples,
int ar_order,
int nb_samples,
double * k,
double * r,
double * a )
static

Definition at line 261 of file af_adeclick.c.

Referenced by filter_channel().

◆ isfinite_array()

static int isfinite_array ( double * samples,
int nb_samples )
static

Definition at line 296 of file af_adeclick.c.

Referenced by filter_channel().

◆ find_index()

static int find_index ( int * index,
int value,
int size )
static

Definition at line 307 of file af_adeclick.c.

Referenced by interpolation().

◆ factorization()

static int factorization ( double * matrix,
int n )
static

Definition at line 330 of file af_adeclick.c.

Referenced by do_interpolation().

◆ do_interpolation()

static int do_interpolation ( DeclickChannel * c,
double * matrix,
double * vector,
int n,
double * out )
static

Definition at line 361 of file af_adeclick.c.

Referenced by interpolation().

◆ interpolation()

static int interpolation ( DeclickChannel * c,
const double * src,
int ar_order,
double * acoefficients,
int * index,
int nb_errors,
double * auxiliary,
double * interpolated )
static

Definition at line 395 of file af_adeclick.c.

Referenced by filter_channel().

◆ detect_clips()

static int detect_clips ( AudioDeclickContext * s,
DeclickChannel * c,
double unused0,
double * unused1,
double * unused2,
uint8_t * clip,
int * index,
const double * src,
double * dst )
static

Definition at line 439 of file af_adeclick.c.

Referenced by init().

◆ detect_clicks()

static int detect_clicks ( AudioDeclickContext * s,
DeclickChannel * c,
double sigmae,
double * detection,
double * acoefficients,
uint8_t * click,
int * index,
const double * src,
double * dst )
static

Definition at line 489 of file af_adeclick.c.

Referenced by init().

◆ filter_channel()

static int filter_channel ( AVFilterContext * ctx,
void * arg,
int ch,
int nb_jobs )
static

Definition at line 535 of file af_adeclick.c.

◆ filter_frame()

static int filter_frame ( AVFilterLink * inlink)
static

Definition at line 600 of file af_adeclick.c.

Referenced by activate().

◆ activate()

static int activate ( AVFilterContext * ctx)
static

Definition at line 660 of file af_adeclick.c.

◆ init()

static av_cold int init ( AVFilterContext * ctx)
static

Definition at line 720 of file af_adeclick.c.

◆ uninit()

static av_cold void uninit ( AVFilterContext * ctx)
static

Definition at line 734 of file af_adeclick.c.

◆ AVFILTER_DEFINE_CLASS() [2/2]

AVFILTER_DEFINE_CLASS ( adeclip )

Variable Documentation

◆ adeclick_options

const AVOption adeclick_options[]
static
Initial value:
= {
{ "window", "set window size", OFFSET(w), AV_OPT_TYPE_DOUBLE, {.dbl=55}, 10, 100, AF },
{ "w", "set window size", OFFSET(w), AV_OPT_TYPE_DOUBLE, {.dbl=55}, 10, 100, AF },
{ "overlap", "set window overlap", OFFSET(overlap), AV_OPT_TYPE_DOUBLE, {.dbl=75}, 50, 95, AF },
{ "o", "set window overlap", OFFSET(overlap), AV_OPT_TYPE_DOUBLE, {.dbl=75}, 50, 95, AF },
{ "arorder", "set autoregression order", OFFSET(ar), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 0, 25, AF },
{ "a", "set autoregression order", OFFSET(ar), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 0, 25, AF },
{ "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 1, 100, AF },
{ "t", "set threshold", OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 1, 100, AF },
{ "burst", "set burst fusion", OFFSET(burst), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 0, 10, AF },
{ "b", "set burst fusion", OFFSET(burst), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 0, 10, AF },
{ "method", "set overlap method", OFFSET(method), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, AF, .unit = "m" },
{ "m", "set overlap method", OFFSET(method), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, AF, .unit = "m" },
{ "add", "overlap-add", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, .unit = "m" },
{ "a", "overlap-add", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, .unit = "m" },
{ "save", "overlap-save", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, .unit = "m" },
{ "s", "overlap-save", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, .unit = "m" },
{ NULL }
}
AF
#define AF
Definition af_acrossover.c:85
NULL
#define NULL
Definition coverity.c:32
OFFSET
#define OFFSET(x)
Definition ffmpeg_opt.c:1551
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Special option type for declaring named constants.
Definition opt.h:298
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Underlying C type is int.
Definition opt.h:258
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Underlying C type is double.
Definition opt.h:266
w
uint8_t w
Definition llvidencdsp.c:39

Definition at line 94 of file af_adeclick.c.

◆ inputs

const AVFilterPad inputs[]
static
Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_input,
},
}
config_input
static int config_input(AVFilterLink *inlink)
Definition af_acontrast.c:121
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition avutil.h:201

Definition at line 779 of file af_adeclick.c.

◆ ff_af_adeclick

const FFFilter ff_af_adeclick
Initial value:
= {
.p.name = "adeclick",
.p.description = NULL_IF_CONFIG_SMALL("Remove impulsive noise from input audio."),
.p.priv_class = &adeclick_class,
.p.flags = AVFILTER_FLAG_SLICE_THREADS | AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
.priv_size = sizeof(AudioDeclickContext),
.init = init,
.activate = activate,
.uninit = uninit,
FILTER_INPUTS(inputs),
FILTER_OUTPUTS(ff_audio_default_filterpad),
FILTER_SINGLE_SAMPLEFMT(AV_SAMPLE_FMT_DBLP),
}
inputs
static const AVFilterPad inputs[]
Definition af_aap.c:299
ff_audio_default_filterpad
const AVFilterPad ff_audio_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_AUDIO.
Definition audio.c:34
init
int(* init)(AVBSFContext *ctx)
Definition dts2pts.c:608
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition avfilter.h:166
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition avfilter.h:204
AV_SAMPLE_FMT_DBLP
@ AV_SAMPLE_FMT_DBLP
double, planar
Definition samplefmt.h:67
uninit
static av_cold void uninit(AVBitStreamFilterContext *ctx)
Definition lcevc_merge.c:135
activate
static int activate(AVBitStreamFilterContext *ctx)
Definition lcevc_merge.c:144
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition filters.h:264
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition filters.h:265
FILTER_SINGLE_SAMPLEFMT
#define FILTER_SINGLE_SAMPLEFMT(sample_fmt_)
Definition filters.h:257
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition internal.h:88

Definition at line 787 of file af_adeclick.c.

◆ adeclip_options

const AVOption adeclip_options[]
static
Initial value:
= {
{ "window", "set window size", OFFSET(w), AV_OPT_TYPE_DOUBLE, {.dbl=55}, 10, 100, AF },
{ "w", "set window size", OFFSET(w), AV_OPT_TYPE_DOUBLE, {.dbl=55}, 10, 100, AF },
{ "overlap", "set window overlap", OFFSET(overlap), AV_OPT_TYPE_DOUBLE, {.dbl=75}, 50, 95, AF },
{ "o", "set window overlap", OFFSET(overlap), AV_OPT_TYPE_DOUBLE, {.dbl=75}, 50, 95, AF },
{ "arorder", "set autoregression order", OFFSET(ar), AV_OPT_TYPE_DOUBLE, {.dbl=8}, 0, 25, AF },
{ "a", "set autoregression order", OFFSET(ar), AV_OPT_TYPE_DOUBLE, {.dbl=8}, 0, 25, AF },
{ "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl=10}, 1, 100, AF },
{ "t", "set threshold", OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl=10}, 1, 100, AF },
{ "hsize", "set histogram size", OFFSET(nb_hbins), AV_OPT_TYPE_INT, {.i64=1000}, 100, 9999, AF },
{ "n", "set histogram size", OFFSET(nb_hbins), AV_OPT_TYPE_INT, {.i64=1000}, 100, 9999, AF },
{ "method", "set overlap method", OFFSET(method), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, AF, .unit = "m" },
{ "m", "set overlap method", OFFSET(method), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, AF, .unit = "m" },
{ "add", "overlap-add", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, .unit = "m" },
{ "a", "overlap-add", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, .unit = "m" },
{ "save", "overlap-save", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, .unit = "m" },
{ "s", "overlap-save", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, .unit = "m" },
{ NULL }
}

Definition at line 801 of file af_adeclick.c.

◆ ff_af_adeclip

const FFFilter ff_af_adeclip
Initial value:
= {
.p.name = "adeclip",
.p.description = NULL_IF_CONFIG_SMALL("Remove clipping from input audio."),
.p.priv_class = &adeclip_class,
.p.flags = AVFILTER_FLAG_SLICE_THREADS | AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
.priv_size = sizeof(AudioDeclickContext),
.init = init,
.activate = activate,
.uninit = uninit,
FILTER_INPUTS(inputs),
FILTER_OUTPUTS(ff_audio_default_filterpad),
FILTER_SINGLE_SAMPLEFMT(AV_SAMPLE_FMT_DBLP),
}

Definition at line 823 of file af_adeclick.c.

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