#include "config_components.h"
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/ffmath.h"
#include "libavutil/opt.h"
#include "audio.h"
#include "avfilter.h"
#include "filters.h"
#include "internal.h"

Data Structures
struct	ChanCache

struct	BiquadsContext

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

Macros
#define	BIQUAD_FILTER(name, type, min, max, need_clipping)

#define	BIQUAD_DII_FILTER(name, type, min, max, need_clipping)

#define	BIQUAD_TDI_FILTER(name, type, min, max, need_clipping)

#define	BIQUAD_TDII_FILTER(name, type, min, max, need_clipping)

#define	BIQUAD_LATT_FILTER(name, type, min, max, need_clipping)

#define	BIQUAD_SVF_FILTER(name, type, min, max, need_clipping)

#define	BIQUAD_ZDF_FILTER(name, type, min, max, need_clipping)

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

#define	FLAGS AV_OPT_FLAG_AUDIO_PARAM\|AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_RUNTIME_PARAM

#define	AF AV_OPT_FLAG_AUDIO_PARAM\|AV_OPT_FLAG_FILTERING_PARAM

#define	DEFINE_BIQUAD_FILTER_2(name_, description_, priv_class_)

#define	DEFINE_BIQUAD_FILTER(name, description)

Enumerations
enum	FilterType { DC_TYPE, AC_TYPE, SQ_TYPE, PS_TYPE, NB_TYPES, BUTTERWORTH, CHEBYSHEV1, CHEBYSHEV2, NB_TYPES, biquad, equalizer, bass, treble, bandpass, bandreject, allpass, highpass, lowpass, lowshelf, highshelf, WEAK, STRONG, NB_FILTER, LOWPASS, FLAT, AFLAT, CHROMA, COLOR, ACOLOR, XFLAT, YFLAT, NB_FILTERS }

enum	WidthType { NONE, HERTZ, OCTAVE, QFACTOR, SLOPE, KHERTZ, NB_WTYPE }

enum	TransformType { PREDICTOR_TRANSFORM = 0, COLOR_TRANSFORM = 1, SUBTRACT_GREEN = 2, COLOR_INDEXING_TRANSFORM = 3, DI, DII, TDI, TDII, LATT, SVF, ZDF, NB_TTYPE }

Functions
static int	query_formats (AVFilterContext *ctx)

static void	convert_dir2latt (BiquadsContext *s)

static void	convert_dir2svf (BiquadsContext *s)

static double	convert_width2qfactor (double width, double frequency, double gain, double sample_rate, int width_type)

static void	convert_dir2zdf (BiquadsContext *s, int sample_rate)

static int	config_filter (AVFilterLink *outlink, int reset)

static int	config_output (AVFilterLink *outlink)

static void	reverse_samples (AVFrame out, AVFrame in, int p, int oo, int io, int nb_samples)

static int	filter_channel (AVFilterContext ctx, void arg, int jobnr, int nb_jobs)

static int	filter_frame (AVFilterLink inlink, AVFrame buf, int eof)

static int	activate (AVFilterContext *ctx)

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)

Variables
static const AVFilterPad	inputs []

static const AVFilterPad	outputs []

Macro Definition Documentation

◆ BIQUAD_FILTER

#define BIQUAD_FILTER	(	name,
		type,
		min,
		max,
		need_clipping
	)

Definition at line 204 of file af_biquads.c.

◆ BIQUAD_DII_FILTER

#define BIQUAD_DII_FILTER	(	name,
		type,
		min,
		max,
		need_clipping
	)

Definition at line 287 of file af_biquads.c.

◆ BIQUAD_TDI_FILTER

#define BIQUAD_TDI_FILTER	(	name,
		type,
		min,
		max,
		need_clipping
	)

Definition at line 335 of file af_biquads.c.

◆ BIQUAD_TDII_FILTER

#define BIQUAD_TDII_FILTER	(	name,
		type,
		min,
		max,
		need_clipping
	)

Definition at line 391 of file af_biquads.c.

◆ BIQUAD_LATT_FILTER

#define BIQUAD_LATT_FILTER	(	name,
		type,
		min,
		max,
		need_clipping
	)

Definition at line 438 of file af_biquads.c.

◆ BIQUAD_SVF_FILTER

#define BIQUAD_SVF_FILTER	(	name,
		type,
		min,
		max,
		need_clipping
	)

Definition at line 494 of file af_biquads.c.

◆ BIQUAD_ZDF_FILTER

#define BIQUAD_ZDF_FILTER	(	name,
		type,
		min,
		max,
		need_clipping
	)

Definition at line 542 of file af_biquads.c.

◆ OFFSET

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

Definition at line 1402 of file af_biquads.c.

◆ FLAGS

#define FLAGS AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 1403 of file af_biquads.c.

◆ AF

#define AF AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 1404 of file af_biquads.c.

◆ DEFINE_BIQUAD_FILTER_2

#define DEFINE_BIQUAD_FILTER_2	(	name_,
		description_,
		priv_class_
	)

Value:

static av_cold int name_##_init(AVFilterContext *ctx)                   \
{                                                                       \
    BiquadsContext *s = ctx->priv;                                      \
    s->filter_type = name_;                                             \
    s->pts = AV_NOPTS_VALUE;                                            \
    return 0;                                                           \
}                                                                       \
                                                         \
const AVFilter ff_af_##name_ = {                         \
    .name          = #name_,                             \
    .description   = NULL_IF_CONFIG_SMALL(description_), \
    .priv_class    = &priv_class_##_class,               \
    .priv_size     = sizeof(BiquadsContext),             \
    .init          = name_##_init,                       \
    .activate      = activate,                           \
    .uninit        = uninit,                             \
    FILTER_INPUTS(inputs),                               \
    FILTER_OUTPUTS(outputs),                             \
    FILTER_QUERY_FUNC(query_formats),                    \
    .process_command = process_command,                  \
    .flags         = AVFILTER_FLAG_SLICE_THREADS | AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL, \
}

Definition at line 1406 of file af_biquads.c.

◆ DEFINE_BIQUAD_FILTER

#define DEFINE_BIQUAD_FILTER	(	name,
		description
	)

Value:

AVFILTER_DEFINE_CLASS(name); \

DEFINE_BIQUAD_FILTER_2(name, description, name)

Definition at line 1430 of file af_biquads.c.

Enumeration Type Documentation

◆ FilterType

enum FilterType

Enumerator
DC_TYPE
AC_TYPE
SQ_TYPE
PS_TYPE
NB_TYPES
BUTTERWORTH
CHEBYSHEV1
CHEBYSHEV2
NB_TYPES
biquad
equalizer
bass
treble
bandpass
bandreject
allpass
highpass
lowpass
lowshelf
highshelf
WEAK
STRONG
NB_FILTER
LOWPASS
FLAT
AFLAT
CHROMA
COLOR
ACOLOR
XFLAT
YFLAT
NB_FILTERS

Definition at line 76 of file af_biquads.c.

◆ WidthType

enum WidthType

Enumerator
NONE
HERTZ
OCTAVE
QFACTOR
SLOPE
KHERTZ
NB_WTYPE

Definition at line 90 of file af_biquads.c.

◆ TransformType

enum TransformType

Enumerator
PREDICTOR_TRANSFORM
COLOR_TRANSFORM
SUBTRACT_GREEN
COLOR_INDEXING_TRANSFORM
DI
DII
TDI
TDII
LATT
SVF
ZDF
NB_TTYPE

Definition at line 100 of file af_biquads.c.

Function Documentation

◆ query_formats()

static int query_formats ( AVFilterContext * ctx )

static

Definition at line 161 of file af_biquads.c.

◆ convert_dir2latt()

static void convert_dir2latt ( BiquadsContext * s )

static

Definition at line 592 of file af_biquads.c.

Referenced by config_filter().

◆ convert_dir2svf()

static void convert_dir2svf ( BiquadsContext * s )

static

Definition at line 609 of file af_biquads.c.

Referenced by config_filter().

◆ convert_width2qfactor()

static double convert_width2qfactor	(	double	width,
		double	frequency,
		double	gain,
		double	sample_rate,
		int	width_type
	)

static

Definition at line 627 of file af_biquads.c.

Referenced by convert_dir2zdf().

◆ convert_dir2zdf()

static void convert_dir2zdf	(	BiquadsContext *	s,
		int	sample_rate
	)

static

Definition at line 662 of file af_biquads.c.

Referenced by config_filter().

◆ config_filter()

static int config_filter	(	AVFilterLink *	outlink,
		int	reset
	)

static

Definition at line 775 of file af_biquads.c.

Referenced by config_output(), and process_command().

◆ config_output()

static int config_output ( AVFilterLink * outlink )

static

Definition at line 1140 of file af_biquads.c.

◆ reverse_samples()

static void reverse_samples	(	AVFrame *	out,
		AVFrame *	in,
		int	p,
		int	oo,
		int	io,
		int	nb_samples
	)

static

Definition at line 1150 of file af_biquads.c.

Referenced by filter_channel().

◆ filter_channel()

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

static

Definition at line 1185 of file af_biquads.c.

Referenced by filter_frame().

◆ filter_frame()

static int filter_frame	(	AVFilterLink *	inlink,
		AVFrame *	buf,
		int	eof
	)

static

Definition at line 1249 of file af_biquads.c.

Referenced by activate().

◆ activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 1318 of file af_biquads.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 1364 of file af_biquads.c.

◆ uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 1377 of file af_biquads.c.

Variable Documentation

◆ inputs

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 1387 of file af_biquads.c.

◆ outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 1394 of file af_biquads.c.

Data Structures

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

◆ BIQUAD_FILTER

◆ BIQUAD_DII_FILTER

◆ BIQUAD_TDI_FILTER

◆ BIQUAD_TDII_FILTER

◆ BIQUAD_LATT_FILTER

◆ BIQUAD_SVF_FILTER

◆ BIQUAD_ZDF_FILTER

◆ OFFSET

◆ FLAGS

◆ AF

◆ DEFINE_BIQUAD_FILTER_2

◆ DEFINE_BIQUAD_FILTER

Enumeration Type Documentation

◆ FilterType

◆ WidthType

◆ TransformType

Function Documentation

◆ query_formats()

◆ convert_dir2latt()

◆ convert_dir2svf()

◆ convert_width2qfactor()

◆ convert_dir2zdf()

◆ config_filter()

◆ config_output()

◆ reverse_samples()

◆ filter_channel()

◆ filter_frame()

◆ activate()

◆ process_command()

◆ uninit()

Variable Documentation

◆ inputs

◆ outputs