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af_adeclick.c File Reference
#include "libavutil/audio_fifo.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  DeclickChannel
 
struct  AudioDeclickContext
 
struct  ThreadData
 Used for passing data between threads. More...
 

Macros

#define OFFSET(x)   offsetof(AudioDeclickContext, x)
 
#define AF   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 

Functions

 AVFILTER_DEFINE_CLASS (adeclick)
 
static int query_formats (AVFilterContext *ctx)
 
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, AVFrame *in)
 
static int request_frame (AVFilterLink *outlink)
 
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 []
 
static const AVFilterPad outputs []
 
AVFilter ff_af_adeclick
 
static const AVOption adeclip_options []
 
AVFilter ff_af_adeclip
 

Macro Definition Documentation

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

Definition at line 86 of file af_adeclick.c.

#define AF   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 87 of file af_adeclick.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( adeclick  )
static int query_formats ( AVFilterContext *  ctx)
static

Definition at line 103 of file af_adeclick.c.

static int config_input ( AVFilterLink *  inlink)
static

Definition at line 132 of file af_adeclick.c.

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

Definition at line 199 of file af_adeclick.c.

Referenced by autoregression(), and interpolation().

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

Definition at line 214 of file af_adeclick.c.

Referenced by filter_channel().

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

Definition at line 249 of file af_adeclick.c.

Referenced by filter_channel().

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

Definition at line 260 of file af_adeclick.c.

Referenced by interpolation().

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

Definition at line 283 of file af_adeclick.c.

Referenced by do_interpolation().

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

Definition at line 314 of file af_adeclick.c.

Referenced by 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 348 of file af_adeclick.c.

Referenced by filter_channel().

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 392 of file af_adeclick.c.

Referenced by init().

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 442 of file af_adeclick.c.

Referenced by init().

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

Definition at line 488 of file af_adeclick.c.

Referenced by filter_frame().

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

Definition at line 547 of file af_adeclick.c.

Referenced by request_frame().

static int request_frame ( AVFilterLink *  outlink)
static

Definition at line 617 of file af_adeclick.c.

static av_cold int init ( AVFilterContext *  ctx)
static

Definition at line 640 of file af_adeclick.c.

static av_cold void uninit ( AVFilterContext *  ctx)
static

Definition at line 654 of file af_adeclick.c.

AVFILTER_DEFINE_CLASS ( adeclip  )

Variable Documentation

const AVOption adeclick_options[]
static
Initial value:
= {
{ "w", "set window size", OFFSET(w), AV_OPT_TYPE_DOUBLE, {.dbl=55}, 10, 100, AF },
{ "o", "set window overlap", OFFSET(overlap), AV_OPT_TYPE_DOUBLE, {.dbl=75}, 50, 95, AF },
{ "a", "set autoregression order", OFFSET(ar), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 0, 25, AF },
{ "t", "set threshold", OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 1, 100, AF },
{ "b", "set burst fusion", OFFSET(burst), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 0, 10, AF },
{ "m", "set overlap method", OFFSET(method), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, AF, "m" },
{ "a", "overlap-add", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "m" },
{ "s", "overlap-save", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "m" },
{ NULL }
}
NULL
#define NULL
Definition: coverity.c:32
OFFSET
#define OFFSET(x)
Definition: af_adeclick.c:86
AV_OPT_TYPE_INT
Definition: opt.h:223
AV_OPT_TYPE_CONST
Definition: opt.h:232
w
uint8_t w
Definition: llviddspenc.c:38
AV_OPT_TYPE_DOUBLE
Definition: opt.h:225
AF
#define AF
Definition: af_adeclick.c:87

Definition at line 89 of file af_adeclick.c.

const AVFilterPad inputs[]
static
Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.filter_frame = filter_frame,
.config_props = config_input,
},
{ NULL }
}
NULL
#define NULL
Definition: coverity.c:32
config_input
static int config_input(AVFilterLink *inlink)
Definition: af_adeclick.c:132
AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: af_adeclick.c:547

Definition at line 696 of file af_adeclick.c.

const AVFilterPad outputs[]
static
Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.request_frame = request_frame,
},
{ NULL }
}
NULL
#define NULL
Definition: coverity.c:32
AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
request_frame
static int request_frame(AVFilterLink *outlink)
Definition: af_adeclick.c:617

Definition at line 706 of file af_adeclick.c.

AVFilter ff_af_adeclick
Initial value:
= {
.name = "adeclick",
.description = NULL_IF_CONFIG_SMALL("Remove impulsive noise from input audio."),
.query_formats = query_formats,
.priv_size = sizeof(AudioDeclickContext),
.priv_class = &adeclick_class,
.init = init,
.uninit = uninit,
.inputs = inputs,
.outputs = outputs,
.flags = AVFILTER_FLAG_SLICE_THREADS,
}
outputs
static const AVFilterPad outputs[]
Definition: af_adeclick.c:706
init
static av_cold int init(AVFilterContext *ctx)
Definition: af_adeclick.c:640
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:186
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:116
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: af_adeclick.c:654
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:596
inputs
static const AVFilterPad inputs[]
Definition: af_adeclick.c:696
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: af_adeclick.c:103

Definition at line 715 of file af_adeclick.c.

const AVOption adeclip_options[]
static
Initial value:
= {
{ "w", "set window size", OFFSET(w), AV_OPT_TYPE_DOUBLE, {.dbl=55}, 10, 100, AF },
{ "o", "set window overlap", OFFSET(overlap), AV_OPT_TYPE_DOUBLE, {.dbl=75}, 50, 95, AF },
{ "a", "set autoregression order", OFFSET(ar), AV_OPT_TYPE_DOUBLE, {.dbl=8}, 0, 25, AF },
{ "t", "set threshold", OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl=10}, 1, 100, AF },
{ "n", "set histogram size", OFFSET(nb_hbins), AV_OPT_TYPE_INT, {.i64=1000}, 100, 9999, AF },
{ "m", "set overlap method", OFFSET(method), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, AF, "m" },
{ "a", "overlap-add", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "m" },
{ "s", "overlap-save", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "m" },
{ NULL }
}
NULL
#define NULL
Definition: coverity.c:32
OFFSET
#define OFFSET(x)
Definition: af_adeclick.c:86
AV_OPT_TYPE_INT
Definition: opt.h:223
AV_OPT_TYPE_CONST
Definition: opt.h:232
w
uint8_t w
Definition: llviddspenc.c:38
AV_OPT_TYPE_DOUBLE
Definition: opt.h:225
AF
#define AF
Definition: af_adeclick.c:87

Definition at line 728 of file af_adeclick.c.

AVFilter ff_af_adeclip
Initial value:
= {
.name = "adeclip",
.description = NULL_IF_CONFIG_SMALL("Remove clipping from input audio."),
.query_formats = query_formats,
.priv_size = sizeof(AudioDeclickContext),
.priv_class = &adeclip_class,
.init = init,
.uninit = uninit,
.inputs = inputs,
.outputs = outputs,
.flags = AVFILTER_FLAG_SLICE_THREADS,
}
outputs
static const AVFilterPad outputs[]
Definition: af_adeclick.c:706
init
static av_cold int init(AVFilterContext *ctx)
Definition: af_adeclick.c:640
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:186
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:116
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: af_adeclick.c:654
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:596
inputs
static const AVFilterPad inputs[]
Definition: af_adeclick.c:696
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: af_adeclick.c:103

Definition at line 742 of file af_adeclick.c.

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