af_asubboost.c File Reference

#include "libavutil/channel_layout.h"
#include "libavutil/ffmath.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "audio.h"

Go to the source code of this file.

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

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

Functions
static int	get_coeffs (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	filter_channels (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static av_cold void	uninit (AVFilterContext *ctx)
static int	process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
	AVFILTER_DEFINE_CLASS (asubboost)

Variables
static const AVOption	asubboost_options []
static const AVFilterPad	inputs []
const AVFilter	ff_af_asubboost

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(ASubBoostContext, x)

Definition at line 212 of file af_asubboost.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 213 of file af_asubboost.c.

Function Documentation

get_coeffs()

static int get_coeffs ( AVFilterContext *  ctx )

static

Definition at line 50 of file af_asubboost.c.

Referenced by config_input(), and process_command().

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 75 of file af_asubboost.c.

filter_channels()

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

static

Definition at line 93 of file af_asubboost.c.

Referenced by filter_frame().

filter_frame()

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

static

Definition at line 154 of file af_asubboost.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 190 of file af_asubboost.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 200 of file af_asubboost.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

asubboost

)

Variable Documentation

asubboost_options

const AVOption asubboost_options[]

static

Initial value:

= {
    { "dry",      "set dry gain", OFFSET(dry_gain), AV_OPT_TYPE_DOUBLE, {.dbl=1.0},      0,   1, FLAGS },
    { "wet",      "set wet gain", OFFSET(wet_gain), AV_OPT_TYPE_DOUBLE, {.dbl=1.0},      0,   1, FLAGS },
    { "boost",    "set max boost",OFFSET(max_boost),AV_OPT_TYPE_DOUBLE, {.dbl=2.0},      1,  12, FLAGS },
    { "decay",    "set decay",    OFFSET(decay),    AV_OPT_TYPE_DOUBLE, {.dbl=0.0},      0,   1, FLAGS },
    { "feedback", "set feedback", OFFSET(feedback), AV_OPT_TYPE_DOUBLE, {.dbl=0.9},      0,   1, FLAGS },
    { "cutoff",   "set cutoff",   OFFSET(cutoff),   AV_OPT_TYPE_DOUBLE, {.dbl=100},     50, 900, FLAGS },
    { "slope",    "set slope",    OFFSET(slope),    AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0.0001,   1, FLAGS },
    { "delay",    "set delay",    OFFSET(delay),    AV_OPT_TYPE_DOUBLE, {.dbl=20},       1, 100, FLAGS },
    { "channels", "set channels to filter", OFFSET(ch_layout_str), AV_OPT_TYPE_STRING, {.str="all"}, 0, 0, FLAGS },
    { NULL }
}

Definition at line 215 of file af_asubboost.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 230 of file af_asubboost.c.

ff_af_asubboost

const AVFilter ff_af_asubboost

Initial value:

= {
    .name           = "asubboost",
    .description    = NULL_IF_CONFIG_SMALL("Boost subwoofer frequencies."),
    .priv_size      = sizeof(ASubBoostContext),
    .priv_class     = &asubboost_class,
    .uninit         = uninit,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(ff_audio_default_filterpad),
    FILTER_SINGLE_SAMPLEFMT(AV_SAMPLE_FMT_DBLP),
    .process_command = process_command,
    .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
                       AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 239 of file af_asubboost.c.