af_anlmdn.c File Reference

#include <float.h>
#include "libavutil/avassert.h"
#include "libavutil/audio_fifo.h"
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "audio.h"
#include "formats.h"
#include "af_anlmdndsp.h"

Go to the source code of this file.

Data Structures
struct	AudioNLMeansContext

Macros
#define	WEIGHT_LUT_NBITS   20
#define	WEIGHT_LUT_SIZE   (1<<WEIGHT_LUT_NBITS)
#define	SQR(x)   ((x) * (x))
#define	OFFSET(x)   offsetof(AudioNLMeansContext, x)
#define	AF   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Enumerations
enum	OutModes {   IN_MODE, OUT_MODE, NOISE_MODE, NB_MODES,   IN_MODE, OUT_MODE, NOISE_MODE, NB_MODES,   IN_MODE, OUT_MODE, ESS_MODE, NB_MODES }

Functions
	AVFILTER_DEFINE_CLASS (anlmdn)
static int	query_formats (AVFilterContext *ctx)
static float	compute_distance_ssd_c (const float *f1, const float *f2, ptrdiff_t K)
static void	compute_cache_c (float *cache, const float *f, ptrdiff_t S, ptrdiff_t K, ptrdiff_t i, ptrdiff_t jj)
void	ff_anlmdn_init (AudioNLMDNDSPContext *dsp)
static int	config_output (AVFilterLink *outlink)
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 void	uninit (AVFilterContext *ctx)
static int	process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)

Variables
static const AVOption	anlmdn_options []
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
AVFilter	ff_af_anlmdn

Macro Definition Documentation

WEIGHT_LUT_NBITS

#define WEIGHT_LUT_NBITS   20

Definition at line 33 of file af_anlmdn.c.

WEIGHT_LUT_SIZE

#define WEIGHT_LUT_SIZE   (1<<WEIGHT_LUT_NBITS)

Definition at line 34 of file af_anlmdn.c.

SQR

#define SQR

(

x

)

((x) * (x))

Definition at line 36 of file af_anlmdn.c.

OFFSET

#define OFFSET

(

x

)

offsetof(AudioNLMeansContext, x)

Definition at line 74 of file af_anlmdn.c.

AF

#define AF   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 75 of file af_anlmdn.c.

Enumeration Type Documentation

OutModes

enum OutModes

Enumerator
IN_MODE
OUT_MODE
NOISE_MODE
NB_MODES
IN_MODE
OUT_MODE
NOISE_MODE
NB_MODES
IN_MODE
OUT_MODE
ESS_MODE
NB_MODES

Definition at line 67 of file af_anlmdn.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

anlmdn

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 91 of file af_anlmdn.c.

compute_distance_ssd_c()

static float compute_distance_ssd_c ( const float *  f1, const float *  f2, ptrdiff_t  K  )

static

Definition at line 120 of file af_anlmdn.c.

Referenced by ff_anlmdn_init().

compute_cache_c()

static void compute_cache_c ( float *  cache, const float *  f, ptrdiff_t  S, ptrdiff_t  K, ptrdiff_t  i, ptrdiff_t  jj  )

static

Definition at line 130 of file af_anlmdn.c.

Referenced by ff_anlmdn_init().

ff_anlmdn_init()

void ff_anlmdn_init

(

AudioNLMDNDSPContext *

dsp

)

Definition at line 140 of file af_anlmdn.c.

Referenced by config_output().

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 149 of file af_anlmdn.c.

filter_channel()

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

static

Definition at line 195 of file af_anlmdn.c.

Referenced by filter_frame().

filter_frame()

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

static

Definition at line 255 of file af_anlmdn.c.

Referenced by request_frame().

request_frame()

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 308 of file af_anlmdn.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 333 of file af_anlmdn.c.

process_command()

static int process_command ( AVFilterContext *  ctx, const char *  cmd, const char *  args, char *  res, int  res_len, int  flags  )

static

Definition at line 342 of file af_anlmdn.c.

Variable Documentation

anlmdn_options

const AVOption anlmdn_options[]

static

Initial value:

= {
    { "s", "set denoising strength", OFFSET(a),  AV_OPT_TYPE_FLOAT,    {.dbl=0.00001},0.00001, 10, AF },
    { "p", "set patch duration",     OFFSET(pd), AV_OPT_TYPE_DURATION, {.i64=2000}, 1000, 100000, AF },
    { "r", "set research duration",  OFFSET(rd), AV_OPT_TYPE_DURATION, {.i64=6000}, 2000, 300000, AF },
    { "o", "set output mode",        OFFSET(om), AV_OPT_TYPE_INT,      {.i64=OUT_MODE},  0, NB_MODES-1, AF, "mode" },
    {  "i", "input",                 0,          AV_OPT_TYPE_CONST,    {.i64=IN_MODE},   0,  0, AF, "mode" },
    {  "o", "output",                0,          AV_OPT_TYPE_CONST,    {.i64=OUT_MODE},  0,  0, AF, "mode" },
    {  "n", "noise",                 0,          AV_OPT_TYPE_CONST,    {.i64=NOISE_MODE},0,  0, AF, "mode" },
    { "m", "set smooth factor",      OFFSET(m),  AV_OPT_TYPE_FLOAT,    {.dbl=11.},       1, 15, AF },
    { NULL }
}

Definition at line 77 of file af_anlmdn.c.

inputs

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 365 of file af_anlmdn.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 374 of file af_anlmdn.c.

ff_af_anlmdn

AVFilter ff_af_anlmdn

Initial value:

= {
    .name          = "anlmdn",
    .description   = NULL_IF_CONFIG_SMALL("Reduce broadband noise from stream using Non-Local Means."),
    .query_formats = query_formats,
    .priv_size     = sizeof(AudioNLMeansContext),
    .priv_class    = &anlmdn_class,
    .uninit        = uninit,
    .inputs        = inputs,
    .outputs       = outputs,
    .process_command = process_command,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
                     AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 384 of file af_anlmdn.c.