af_asubboost.c File Reference

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

Go to the source code of this file.

Data Structures
struct	ASubBoostContext

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	query_formats (AVFilterContext *ctx)
static int	get_coeffs (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
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 []
static const AVFilterPad	outputs []
AVFilter	ff_af_asubboost

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(ASubBoostContext, x)

Definition at line 188 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 189 of file af_asubboost.c.

Function Documentation

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 47 of file af_asubboost.c.

get_coeffs()

static int get_coeffs ( AVFilterContext *  ctx )

static

Definition at line 76 of file af_asubboost.c.

Referenced by config_input(), and process_command().

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 101 of file af_asubboost.c.

filter_frame()

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

static

Definition at line 115 of file af_asubboost.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 167 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 176 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=0.5},      0,   1, FLAGS },
    { "wet",      "set wet gain", OFFSET(wet_gain), AV_OPT_TYPE_DOUBLE, {.dbl=0.8},      0,   1, FLAGS },
    { "decay",    "set decay",    OFFSET(decay),    AV_OPT_TYPE_DOUBLE, {.dbl=0.7},      0,   1, FLAGS },
    { "feedback", "set feedback", OFFSET(feedback), AV_OPT_TYPE_DOUBLE, {.dbl=0.5},      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 },
    { NULL }
}

Definition at line 191 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,
    },
    { NULL }
}

Definition at line 204 of file af_asubboost.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 214 of file af_asubboost.c.

ff_af_asubboost

AVFilter ff_af_asubboost

Initial value:

= {
    .name           = "asubboost",
    .description    = NULL_IF_CONFIG_SMALL("Boost subwoofer frequencies."),
    .query_formats  = query_formats,
    .priv_size      = sizeof(ASubBoostContext),
    .priv_class     = &asubboost_class,
    .uninit         = uninit,
    .inputs         = inputs,
    .outputs        = outputs,
    .process_command = process_command,
}

Definition at line 222 of file af_asubboost.c.