af_adenorm.c File Reference

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

Go to the source code of this file.

Data Structures
struct	ADenormContext
struct	ThreadData
	Used for passing data between threads. More...

Macros
#define	OFFSET(x)   offsetof(ADenormContext, x)
#define	FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

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 }

Functions
static int	query_formats (AVFilterContext *ctx)
static void	dc_denorm_fltp (AVFilterContext *ctx, void *dstp, const void *srcp, int nb_samples)
static void	dc_denorm_dblp (AVFilterContext *ctx, void *dstp, const void *srcp, int nb_samples)
static void	ac_denorm_fltp (AVFilterContext *ctx, void *dstp, const void *srcp, int nb_samples)
static void	ac_denorm_dblp (AVFilterContext *ctx, void *dstp, const void *srcp, int nb_samples)
static void	sq_denorm_fltp (AVFilterContext *ctx, void *dstp, const void *srcp, int nb_samples)
static void	sq_denorm_dblp (AVFilterContext *ctx, void *dstp, const void *srcp, int nb_samples)
static void	ps_denorm_fltp (AVFilterContext *ctx, void *dstp, const void *srcp, int nb_samples)
static void	ps_denorm_dblp (AVFilterContext *ctx, void *dstp, const void *srcp, int nb_samples)
static int	config_output (AVFilterLink *outlink)
static int	filter_channels (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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)
	AVFILTER_DEFINE_CLASS (adenorm)

Variables
static const AVFilterPad	adenorm_inputs []
static const AVFilterPad	adenorm_outputs []
static const AVOption	adenorm_options []
AVFilter	ff_af_adenorm

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(ADenormContext, x)

Definition at line 306 of file af_adenorm.c.

#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 307 of file af_adenorm.c.

Enumeration Type Documentation

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 26 of file af_adenorm.c.

Function Documentation

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 46 of file af_adenorm.c.

static void dc_denorm_fltp ( AVFilterContext *  ctx, void *  dstp, const void *  srcp, int  nb_samples  )

static

Definition at line 75 of file af_adenorm.c.

Referenced by config_output().

static void dc_denorm_dblp ( AVFilterContext *  ctx, void *  dstp, const void *  srcp, int  nb_samples  )

static

Definition at line 88 of file af_adenorm.c.

Referenced by config_output().

static void ac_denorm_fltp ( AVFilterContext *  ctx, void *  dstp, const void *  srcp, int  nb_samples  )

static

Definition at line 101 of file af_adenorm.c.

Referenced by config_output().

static void ac_denorm_dblp ( AVFilterContext *  ctx, void *  dstp, const void *  srcp, int  nb_samples  )

static

Definition at line 115 of file af_adenorm.c.

Referenced by config_output().

static void sq_denorm_fltp ( AVFilterContext *  ctx, void *  dstp, const void *  srcp, int  nb_samples  )

static

Definition at line 129 of file af_adenorm.c.

Referenced by config_output().

static void sq_denorm_dblp ( AVFilterContext *  ctx, void *  dstp, const void *  srcp, int  nb_samples  )

static

Definition at line 143 of file af_adenorm.c.

Referenced by config_output().

static void ps_denorm_fltp ( AVFilterContext *  ctx, void *  dstp, const void *  srcp, int  nb_samples  )

static

Definition at line 157 of file af_adenorm.c.

Referenced by config_output().

static void ps_denorm_dblp ( AVFilterContext *  ctx, void *  dstp, const void *  srcp, int  nb_samples  )

static

Definition at line 171 of file af_adenorm.c.

Referenced by config_output().

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 185 of file af_adenorm.c.

Referenced by filter_frame(), and process_command().

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

static

Definition at line 226 of file af_adenorm.c.

Referenced by filter_frame().

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

static

Definition at line 244 of file af_adenorm.c.

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

static

Definition at line 275 of file af_adenorm.c.

Referenced by activate(), config_output(), and gate().

AVFILTER_DEFINE_CLASS

(

adenorm

)

Variable Documentation

const AVFilterPad adenorm_inputs[]

static

Initial value:

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

Definition at line 288 of file af_adenorm.c.

const AVFilterPad adenorm_outputs[]

static

Initial value:

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

Definition at line 297 of file af_adenorm.c.

const AVOption adenorm_options[]

static

Initial value:

= {
    { "level", "set level", OFFSET(level_db), AV_OPT_TYPE_DOUBLE, {.dbl=-351},   -451,        -90, FLAGS },
    { "type",  "set type",  OFFSET(type),     AV_OPT_TYPE_INT,    {.i64=DC_TYPE},   0, NB_TYPES-1, FLAGS, "type" },
    { "dc",    NULL,  0, AV_OPT_TYPE_CONST, {.i64=DC_TYPE}, 0, 0, FLAGS, "type"},
    { "ac",    NULL,  0, AV_OPT_TYPE_CONST, {.i64=AC_TYPE}, 0, 0, FLAGS, "type"},
    { "square",NULL,  0, AV_OPT_TYPE_CONST, {.i64=SQ_TYPE}, 0, 0, FLAGS, "type"},
    { "pulse", NULL,  0, AV_OPT_TYPE_CONST, {.i64=PS_TYPE}, 0, 0, FLAGS, "type"},
    { NULL }
}

Definition at line 309 of file af_adenorm.c.

AVFilter ff_af_adenorm

Initial value:

= {
    .name            = "adenorm",
    .description     = NULL_IF_CONFIG_SMALL("Remedy denormals by adding extremely low-level noise."),
    .query_formats   = query_formats,
    .priv_size       = sizeof(ADenormContext),
    .inputs          = adenorm_inputs,
    .outputs         = adenorm_outputs,
    .priv_class      = &adenorm_class,
    .process_command = process_command,
    .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC |
                       AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 321 of file af_adenorm.c.