af_haas.c File Reference

#include "libavutil/channel_layout.h"
#include "libavutil/mem.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	HaasContext

Macros
#define	MAX_HAAS_DELAY   40
#define	OFFSET(x)   offsetof(HaasContext, x)
#define	A   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Functions
	AVFILTER_DEFINE_CLASS (haas)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	haas_options []
static const AVFilterPad	inputs []
const AVFilter	ff_af_haas

Macro Definition Documentation

MAX_HAAS_DELAY

#define MAX_HAAS_DELAY   40

Definition at line 28 of file af_haas.c.

OFFSET

#define OFFSET

(

x

)

offsetof(HaasContext, x)

Definition at line 57 of file af_haas.c.

A

#define A   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 58 of file af_haas.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

haas

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 83 of file af_haas.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 98 of file af_haas.c.

filter_frame()

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

static

Definition at line 130 of file af_haas.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 193 of file af_haas.c.

Variable Documentation

haas_options

const AVOption haas_options[]

static

Initial value:

= {
    { "level_in",      "set level in",      OFFSET(level_in),         AV_OPT_TYPE_DOUBLE,  {.dbl=1}, 0.015625,  64, A },
    { "level_out",     "set level out",     OFFSET(level_out),        AV_OPT_TYPE_DOUBLE,  {.dbl=1}, 0.015625,  64, A },
    { "side_gain",     "set side gain",     OFFSET(par_side_gain),    AV_OPT_TYPE_DOUBLE,  {.dbl=1}, 0.015625,  64, A },
    { "middle_source", "set middle source", OFFSET(par_m_source),     AV_OPT_TYPE_INT,     {.i64=2},        0,   3, A, .unit = "source" },
    {   "left",        0,                   0,                        AV_OPT_TYPE_CONST,   {.i64=0},        0,   0, A, .unit = "source" },
    {   "right",       0,                   0,                        AV_OPT_TYPE_CONST,   {.i64=1},        0,   0, A, .unit = "source" },
    {   "mid",         "L+R",               0,                        AV_OPT_TYPE_CONST,   {.i64=2},        0,   0, A, .unit = "source" },
    {   "side",        "L-R",               0,                        AV_OPT_TYPE_CONST,   {.i64=3},        0,   0, A, .unit = "source" },
    { "middle_phase",  "set middle phase",  OFFSET(par_middle_phase), AV_OPT_TYPE_BOOL,    {.i64=0},        0,   1, A },
    { "left_delay",    "set left delay",    OFFSET(par_delay0),       AV_OPT_TYPE_DOUBLE,  {.dbl=2.05},     0,  MAX_HAAS_DELAY, A },
    { "left_balance",  "set left balance",  OFFSET(par_balance0),     AV_OPT_TYPE_DOUBLE,  {.dbl=-1.0},    -1,   1, A },
    { "left_gain",     "set left gain",     OFFSET(par_gain0),        AV_OPT_TYPE_DOUBLE,  {.dbl=1}, 0.015625,  64, A },
    { "left_phase",    "set left phase",    OFFSET(par_phase0),       AV_OPT_TYPE_BOOL,    {.i64=0},        0,   1, A },
    { "right_delay",   "set right delay",   OFFSET(par_delay1),       AV_OPT_TYPE_DOUBLE,  {.dbl=2.12},     0,  MAX_HAAS_DELAY, A },
    { "right_balance", "set right balance", OFFSET(par_balance1),     AV_OPT_TYPE_DOUBLE,  {.dbl=1},       -1,   1, A },
    { "right_gain",    "set right gain",    OFFSET(par_gain1),        AV_OPT_TYPE_DOUBLE,  {.dbl=1}, 0.015625,  64, A },
    { "right_phase",   "set right phase",   OFFSET(par_phase1),       AV_OPT_TYPE_BOOL,    {.i64=1},        0,   1, A },
    { NULL }
}

Definition at line 60 of file af_haas.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 201 of file af_haas.c.

ff_af_haas

const AVFilter ff_af_haas

Initial value:

= {
    .name           = "haas",
    .description    = NULL_IF_CONFIG_SMALL("Apply Haas Stereo Enhancer."),
    .priv_size      = sizeof(HaasContext),
    .priv_class     = &haas_class,
    .uninit         = uninit,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(ff_audio_default_filterpad),
    FILTER_QUERY_FUNC(query_formats),
}

Definition at line 210 of file af_haas.c.