af_dialoguenhance.c File Reference

#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "libavutil/tx.h"
#include "audio.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "internal.h"
#include "window_func.h"
#include <float.h>

Go to the source code of this file.

Data Structures
struct	AudioDialogueEnhancementContext

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

Functions
	AVFILTER_DEFINE_CLASS (dialoguenhance)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static void	apply_window (AudioDialogueEnhanceContext *s, const float *in_frame, float *out_frame, const int add_to_out_frame)
static float	sqrf (float x)
static void	get_centere (AVComplexFloat *left, AVComplexFloat *right, AVComplexFloat *center, int N)
static float	flux (float *curf, float *prevf, int N)
static float	fluxlr (float *lf, float *lpf, float *rf, float *rpf, int N)
static float	calc_vad (float fc, float flr, float a)
static void	get_final (float *c, float *l, float *r, float vad, int N, float original, float enhance)
static int	de_stereo (AVFilterContext *ctx, AVFrame *out)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static int	activate (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	dialoguenhance_options []
static const AVFilterPad	inputs []
const AVFilter	ff_af_dialoguenhance

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(AudioDialogueEnhanceContext, x)

Definition at line 56 of file af_dialoguenhance.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 57 of file af_dialoguenhance.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

dialoguenhance

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 68 of file af_dialoguenhance.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 85 of file af_dialoguenhance.c.

apply_window()

static void apply_window ( AudioDialogueEnhanceContext *  s, const float *  in_frame, float *  out_frame, const int  add_to_out_frame  )

static

Definition at line 128 of file af_dialoguenhance.c.

Referenced by de_stereo().

sqrf()

static float sqrf ( float  x )

static

Definition at line 142 of file af_dialoguenhance.c.

Referenced by flux(), fluxlr(), get_centere(), and get_final().

get_centere()

static void get_centere ( AVComplexFloat *  left, AVComplexFloat *  right, AVComplexFloat *  center, int  N  )

static

Definition at line 147 of file af_dialoguenhance.c.

Referenced by de_stereo().

flux()

static float flux ( float *  curf, float *  prevf, int  N  )

static

Definition at line 163 of file af_dialoguenhance.c.

Referenced by de_stereo().

fluxlr()

static float fluxlr ( float *  lf, float *  lpf, float *  rf, float *  rpf, int  N  )

static

Definition at line 181 of file af_dialoguenhance.c.

Referenced by de_stereo().

calc_vad()

static float calc_vad ( float  fc, float  flr, float  a  )

static

Definition at line 203 of file af_dialoguenhance.c.

Referenced by de_stereo().

get_final()

static void get_final ( float *  c, float *  l, float *  r, float  vad, int  N, float  original, float  enhance  )

static

Definition at line 210 of file af_dialoguenhance.c.

Referenced by de_stereo().

de_stereo()

static int de_stereo ( AVFilterContext *  ctx, AVFrame *  out  )

static

Definition at line 232 of file af_dialoguenhance.c.

Referenced by filter_frame().

filter_frame()

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

static

Definition at line 307 of file af_dialoguenhance.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 333 of file af_dialoguenhance.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 363 of file af_dialoguenhance.c.

Variable Documentation

dialoguenhance_options

const AVOption dialoguenhance_options[]

static

Initial value:

= {
    { "original", "set original center factor", OFFSET(original), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
    { "enhance",  "set dialogue enhance factor",OFFSET(enhance),  AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 3, FLAGS },
    { "voice",    "set voice detection factor", OFFSET(voice),    AV_OPT_TYPE_DOUBLE, {.dbl=2}, 2,32, FLAGS },
    {NULL}
}

Definition at line 59 of file af_dialoguenhance.c.

inputs

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 381 of file af_dialoguenhance.c.

ff_af_dialoguenhance

const AVFilter ff_af_dialoguenhance

Initial value:

= {
    .name            = "dialoguenhance",
    .description     = NULL_IF_CONFIG_SMALL("Audio Dialogue Enhancement."),
    .priv_size       = sizeof(AudioDialogueEnhanceContext),
    .priv_class      = &dialoguenhance_class,
    .uninit          = uninit,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(ff_audio_default_filterpad),
    FILTER_QUERY_FUNC(query_formats),
    .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
    .activate        = activate,
    .process_command = ff_filter_process_command,
}

Definition at line 389 of file af_dialoguenhance.c.