af_asupercut.c File Reference

#include "libavutil/channel_layout.h"
#include "libavutil/ffmath.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	BiquadCoeffs
struct	ASuperCutContext
struct	ThreadData
	Used for passing data between threads. More...

Macros
#define	FILTER(name, type)
#define	OFFSET(x)   offsetof(ASuperCutContext, x)
#define	FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Functions
static void	calc_q_factors (int n, double *q)
static int	get_coeffs (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static int	process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
static av_cold void	uninit (AVFilterContext *ctx)
	AVFILTER_DEFINE_CLASS (asupercut)
	AVFILTER_DEFINE_CLASS (asubcut)
	AVFILTER_DEFINE_CLASS_EXT (asuperpass_asuperstop, "asuperpass/asuperstop", asuperpass_asuperstop_options)

Variables
static enum AVSampleFormat	sample_fmts []
static const AVOption	asupercut_options []
static const AVFilterPad	inputs []
const AVFilter	ff_af_asupercut
static const AVOption	asubcut_options []
const AVFilter	ff_af_asubcut
static const AVOption	asuperpass_asuperstop_options []
const AVFilter	ff_af_asuperpass
const AVFilter	ff_af_asuperstop

Macro Definition Documentation

FILTER

#define FILTER	(		name,
			type
	)

Definition at line 205 of file af_asupercut.c.

OFFSET

#define OFFSET

(

x

)

offsetof(ASuperCutContext, x)

Definition at line 315 of file af_asupercut.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 316 of file af_asupercut.c.

Function Documentation

calc_q_factors()

static void calc_q_factors ( int  n, double *  q  )

static

Definition at line 56 of file af_asupercut.c.

Referenced by get_coeffs().

get_coeffs()

static int get_coeffs ( AVFilterContext *  ctx )

static

Definition at line 62 of file af_asupercut.c.

Referenced by config_input(), and process_command().

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 248 of file af_asupercut.c.

filter_frame()

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

static

Definition at line 265 of file af_asupercut.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 296 of file af_asupercut.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 308 of file af_asupercut.c.

AVFILTER_DEFINE_CLASS() [1/2]

AVFILTER_DEFINE_CLASS

(

asupercut

)

AVFILTER_DEFINE_CLASS() [2/2]

AVFILTER_DEFINE_CLASS

(

asubcut

)

AVFILTER_DEFINE_CLASS_EXT()

AVFILTER_DEFINE_CLASS_EXT	(	asuperpass_asuperstop	,
		"asuperpass/asuperstop"	,
		asuperpass_asuperstop_options
	)

Variable Documentation

sample_fmts

enum AVSampleFormat sample_fmts[]

static

Initial value:

= {
    AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_DBLP, AV_SAMPLE_FMT_NONE
}

Definition at line 52 of file af_asupercut.c.

asupercut_options

const AVOption asupercut_options[]

static

Initial value:

= {
    { "cutoff", "set cutoff frequency", OFFSET(cutoff), AV_OPT_TYPE_DOUBLE, {.dbl=20000}, 20000, 192000, FLAGS },
    { "order",  "set filter order",     OFFSET(order),  AV_OPT_TYPE_INT,    {.i64=10},        3,     20, FLAGS },
    { "level",  "set input level",      OFFSET(level),  AV_OPT_TYPE_DOUBLE, {.dbl=1.},        0.,    1., FLAGS },
    { NULL }
}

Definition at line 318 of file af_asupercut.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 327 of file af_asupercut.c.

ff_af_asupercut

const AVFilter ff_af_asupercut

Initial value:

= {
    .name            = "asupercut",
    .description     = NULL_IF_CONFIG_SMALL("Cut super frequencies."),
    .priv_size       = sizeof(ASuperCutContext),
    .priv_class      = &asupercut_class,
    .uninit          = uninit,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(ff_audio_default_filterpad),
    FILTER_SAMPLEFMTS_ARRAY(sample_fmts),
    .process_command = process_command,
    .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC |
                       AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 336 of file af_asupercut.c.

asubcut_options

const AVOption asubcut_options[]

static

Initial value:

= {
    { "cutoff", "set cutoff frequency", OFFSET(cutoff), AV_OPT_TYPE_DOUBLE, {.dbl=20},  2, 200, FLAGS },
    { "order",  "set filter order",     OFFSET(order),  AV_OPT_TYPE_INT,    {.i64=10},  3,  20, FLAGS },
    { "level",  "set input level",      OFFSET(level),  AV_OPT_TYPE_DOUBLE, {.dbl=1.}, 0.,  1., FLAGS },
    { NULL }
}

Definition at line 350 of file af_asupercut.c.

ff_af_asubcut

const AVFilter ff_af_asubcut

Initial value:

= {
    .name            = "asubcut",
    .description     = NULL_IF_CONFIG_SMALL("Cut subwoofer frequencies."),
    .priv_size       = sizeof(ASuperCutContext),
    .priv_class      = &asubcut_class,
    .uninit          = uninit,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(ff_audio_default_filterpad),
    FILTER_SAMPLEFMTS_ARRAY(sample_fmts),
    .process_command = process_command,
    .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC |
                       AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 359 of file af_asupercut.c.

asuperpass_asuperstop_options

const AVOption asuperpass_asuperstop_options[]

static

Initial value:

= {
    { "centerf","set center frequency", OFFSET(cutoff), AV_OPT_TYPE_DOUBLE, {.dbl=1000}, 2, 999999, FLAGS },
    { "order",  "set filter order",     OFFSET(order),  AV_OPT_TYPE_INT,    {.i64=4},    4,     20, FLAGS },
    { "qfactor","set Q-factor",         OFFSET(qfactor),AV_OPT_TYPE_DOUBLE, {.dbl=1.},0.01,   100., FLAGS },
    { "level",  "set input level",      OFFSET(level),  AV_OPT_TYPE_DOUBLE, {.dbl=1.},   0.,    2., FLAGS },
    { NULL }
}

Definition at line 373 of file af_asupercut.c.

ff_af_asuperpass

const AVFilter ff_af_asuperpass

Initial value:

= {
    .name            = "asuperpass",
    .description     = NULL_IF_CONFIG_SMALL("Apply high order Butterworth band-pass filter."),
    .priv_class      = &asuperpass_asuperstop_class,
    .priv_size       = sizeof(ASuperCutContext),
    .uninit          = uninit,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(ff_audio_default_filterpad),
    FILTER_SAMPLEFMTS_ARRAY(sample_fmts),
    .process_command = process_command,
    .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC |
                       AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 384 of file af_asupercut.c.

ff_af_asuperstop

const AVFilter ff_af_asuperstop

Initial value:

= {
    .name            = "asuperstop",
    .description     = NULL_IF_CONFIG_SMALL("Apply high order Butterworth band-stop filter."),
    .priv_class      = &asuperpass_asuperstop_class,
    .priv_size       = sizeof(ASuperCutContext),
    .uninit          = uninit,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(ff_audio_default_filterpad),
    FILTER_SAMPLEFMTS_ARRAY(sample_fmts),
    .process_command = process_command,
    .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC |
                       AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 398 of file af_asupercut.c.