af_arls.c File Reference

#include "libavutil/common.h"
#include "libavutil/float_dsp.h"
#include "libavutil/opt.h"
#include "audio.h"
#include "avfilter.h"
#include "filters.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	AudioRLSContext

Macros
#define	OFFSET(x)   offsetof(AudioRLSContext, 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

Enumerations
enum	OutModes {   IN_MODE, OUT_MODE, NOISE_MODE, NB_MODES,   IN_MODE, OUT_MODE, NOISE_MODE, NB_MODES,   IN_MODE, DESIRED_MODE, OUT_MODE, NOISE_MODE,   ERROR_MODE, NB_OMODES, IN_MODE, DESIRED_MODE,   OUT_MODE, NOISE_MODE, ERROR_MODE, NB_OMODES,   IN_MODE, OUT_MODE, ESS_MODE, NB_MODES }

Functions
	AVFILTER_DEFINE_CLASS (arls)
static float	fir_sample (AudioRLSContext *s, float sample, float *delay, float *coeffs, float *tmp, int *offset)
static float	process_sample (AudioRLSContext *s, float input, float desired, int ch)
static int	process_channels (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	activate (AVFilterContext *ctx)
static int	config_output (AVFilterLink *outlink)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	arls_options []
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
const AVFilter	ff_af_arls

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(AudioRLSContext, x)

Definition at line 60 of file af_arls.c.

A

#define A   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 61 of file af_arls.c.

AT

#define AT   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 62 of file af_arls.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
DESIRED_MODE
OUT_MODE
NOISE_MODE
ERROR_MODE
NB_OMODES
IN_MODE
DESIRED_MODE
OUT_MODE
NOISE_MODE
ERROR_MODE
NB_OMODES
IN_MODE
OUT_MODE
ESS_MODE
NB_MODES

Definition at line 30 of file af_arls.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

arls

)

fir_sample()

static float fir_sample ( AudioRLSContext *  s, float  sample, float *  delay, float *  coeffs, float *  tmp, int *  offset  )

static

Definition at line 79 of file af_arls.c.

Referenced by process_sample().

process_sample()

static float process_sample ( AudioRLSContext *  s, float  input, float  desired, int  ch  )

static

Definition at line 97 of file af_arls.c.

Referenced by process_channels().

process_channels()

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

static

Definition at line 165 of file af_arls.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 187 of file af_arls.c.

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 252 of file af_arls.c.

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 296 of file af_arls.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 307 of file af_arls.c.

Variable Documentation

arls_options

const AVOption arls_options[]

static

Initial value:

= {
    { "order",    "set the filter order",  OFFSET(order),  AV_OPT_TYPE_INT,   {.i64=16}, 1, INT16_MAX, A },
    { "lambda",   "set the filter lambda", OFFSET(lambda), AV_OPT_TYPE_FLOAT, {.dbl=1.f}, 0, 1, AT },
    { "delta",    "set the filter delta",  OFFSET(delta),  AV_OPT_TYPE_FLOAT, {.dbl=2.f}, 0, INT16_MAX, A },
    { "out_mode", "set output mode",       OFFSET(output_mode), AV_OPT_TYPE_INT, {.i64=OUT_MODE}, 0, NB_OMODES-1, AT, "mode" },
    {  "i", "input",   0, AV_OPT_TYPE_CONST, {.i64=IN_MODE},      0, 0, AT, "mode" },
    {  "d", "desired", 0, AV_OPT_TYPE_CONST, {.i64=DESIRED_MODE}, 0, 0, AT, "mode" },
    {  "o", "output",  0, AV_OPT_TYPE_CONST, {.i64=OUT_MODE},     0, 0, AT, "mode" },
    {  "n", "noise",   0, AV_OPT_TYPE_CONST, {.i64=NOISE_MODE},   0, 0, AT, "mode" },
    {  "e", "error",   0, AV_OPT_TYPE_CONST, {.i64=ERROR_MODE},   0, 0, AT, "mode" },
    { NULL }
}

Definition at line 64 of file af_arls.c.

inputs

const AVFilterPad inputs[]

static

Initial value:

= {
    {
        .name = "input",
        .type = AVMEDIA_TYPE_AUDIO,
    },
    {
        .name = "desired",
        .type = AVMEDIA_TYPE_AUDIO,
    },
}

Definition at line 322 of file af_arls.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 333 of file af_arls.c.

ff_af_arls

const AVFilter ff_af_arls

Initial value:

= {
    .name           = "arls",
    .description    = NULL_IF_CONFIG_SMALL("Apply Recursive Least Squares algorithm to first audio stream."),
    .priv_size      = sizeof(AudioRLSContext),
    .priv_class     = &arls_class,
    .init           = init,
    .uninit         = uninit,
    .activate       = activate,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(outputs),
    FILTER_SINGLE_SAMPLEFMT(AV_SAMPLE_FMT_FLTP),
    .flags          = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
                      AVFILTER_FLAG_SLICE_THREADS,
    .process_command = ff_filter_process_command,
}

Definition at line 341 of file af_arls.c.