af_headphone.c File Reference

#include <math.h>
#include "libavutil/audio_fifo.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/float_dsp.h"
#include "libavutil/intmath.h"
#include "libavutil/opt.h"
#include "libavcodec/avfft.h"
#include "avfilter.h"
#include "internal.h"
#include "audio.h"

Go to the source code of this file.

Data Structures
struct	HeadphoneContext
struct	HeadphoneContext::headphone_inputs
struct	ThreadData

Macros
#define	TIME_DOMAIN   0
#define	FREQUENCY_DOMAIN   1
#define	HRIR_STEREO   0
#define	HRIR_MULTI   1
#define	OFFSET(x)   offsetof(HeadphoneContext, x)
#define	FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Functions
static int	parse_channel_name (HeadphoneContext *s, int x, char **arg, int *rchannel, char *buf)
static void	parse_map (AVFilterContext *ctx)
static int	headphone_convolute (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	headphone_fast_convolute (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	read_ir (AVFilterLink *inlink, AVFrame *frame)
static int	headphone_frame (HeadphoneContext *s, AVFilterLink *outlink, int max_nb_samples)
static int	convert_coeffs (AVFilterContext *ctx, AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static av_cold int	init (AVFilterContext *ctx)
static int	config_output (AVFilterLink *outlink)
static int	request_frame (AVFilterLink *outlink)
static av_cold void	uninit (AVFilterContext *ctx)
	AVFILTER_DEFINE_CLASS (headphone)

Variables
static const AVOption	headphone_options []
static const AVFilterPad	outputs []
AVFilter	ff_af_headphone

Macro Definition Documentation

TIME_DOMAIN

#define TIME_DOMAIN   0

Definition at line 35 of file af_headphone.c.

Referenced by convert_coeffs(), and headphone_frame().

FREQUENCY_DOMAIN

#define FREQUENCY_DOMAIN   1

Definition at line 36 of file af_headphone.c.

Referenced by convert_coeffs().

HRIR_STEREO

#define HRIR_STEREO   0

Definition at line 38 of file af_headphone.c.

Referenced by convert_coeffs().

HRIR_MULTI

#define HRIR_MULTI   1

Definition at line 39 of file af_headphone.c.

Referenced by config_output(), parse_map(), and query_formats().

OFFSET

#define OFFSET

(

x

)

offsetof(HeadphoneContext, x)

Definition at line 879 of file af_headphone.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 880 of file af_headphone.c.

Function Documentation

parse_channel_name()

static int parse_channel_name ( HeadphoneContext *  s, int  x, char **  arg, int *  rchannel, char *  buf  )

static

Definition at line 91 of file af_headphone.c.

Referenced by parse_map().

parse_map()

static void parse_map ( AVFilterContext *  ctx )

static

Definition at line 115 of file af_headphone.c.

Referenced by init().

headphone_convolute()

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

static

Definition at line 164 of file af_headphone.c.

Referenced by headphone_frame().

headphone_fast_convolute()

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

static

Definition at line 237 of file af_headphone.c.

Referenced by headphone_frame().

read_ir()

static int read_ir ( AVFilterLink *  inlink, AVFrame *  frame  )

static

Definition at line 331 of file af_headphone.c.

Referenced by init().

headphone_frame()

static int headphone_frame ( HeadphoneContext *  s, AVFilterLink *  outlink, int  max_nb_samples  )

static

Definition at line 360 of file af_headphone.c.

Referenced by filter_frame(), and request_frame().

convert_coeffs()

static int convert_coeffs ( AVFilterContext *  ctx, AVFilterLink *  inlink  )

static

Definition at line 398 of file af_headphone.c.

Referenced by filter_frame().

filter_frame()

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

static

Definition at line 627 of file af_headphone.c.

Referenced by init().

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 661 of file af_headphone.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 714 of file af_headphone.c.

Referenced by init().

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 727 of file af_headphone.c.

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 775 of file af_headphone.c.

request_frame()

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 801 of file af_headphone.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 847 of file af_headphone.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

headphone

)

Variable Documentation

headphone_options

const AVOption headphone_options[]

static

Initial value:

= {
    { "map",       "set channels convolution mappings",  OFFSET(map),      AV_OPT_TYPE_STRING, {.str=NULL},            .flags = FLAGS },
    { "gain",      "set gain in dB",                     OFFSET(gain),     AV_OPT_TYPE_FLOAT,  {.dbl=0},     -20,  40, .flags = FLAGS },
    { "lfe",       "set lfe gain in dB",                 OFFSET(lfe_gain), AV_OPT_TYPE_FLOAT,  {.dbl=0},     -20,  40, .flags = FLAGS },
    { "type",      "set processing",                     OFFSET(type),     AV_OPT_TYPE_INT,    {.i64=1},       0,   1, .flags = FLAGS, "type" },
    { "time",      "time domain",                        0,                AV_OPT_TYPE_CONST,  {.i64=0},       0,   0, .flags = FLAGS, "type" },
    { "freq",      "frequency domain",                   0,                AV_OPT_TYPE_CONST,  {.i64=1},       0,   0, .flags = FLAGS, "type" },
    { "size",      "set frame size",                     OFFSET(size),     AV_OPT_TYPE_INT,    {.i64=1024},1024,96000, .flags = FLAGS },
    { "hrir",      "set hrir format",                    OFFSET(hrir_fmt), AV_OPT_TYPE_INT,    {.i64=HRIR_STEREO}, 0, 1, .flags = FLAGS, "hrir" },
    { "stereo",    "hrir files have exactly 2 channels", 0,                AV_OPT_TYPE_CONST,  {.i64=HRIR_STEREO}, 0, 0, .flags = FLAGS, "hrir" },
    { "multich",   "single multichannel hrir file",      0,                AV_OPT_TYPE_CONST,  {.i64=HRIR_MULTI},  0, 0, .flags = FLAGS, "hrir" },
    { NULL }
}

Definition at line 882 of file af_headphone.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 898 of file af_headphone.c.

ff_af_headphone

AVFilter ff_af_headphone

Initial value:

= {
    .name          = "headphone",
    .description   = NULL_IF_CONFIG_SMALL("Apply headphone binaural spatialization with HRTFs in additional streams."),
    .priv_size     = sizeof(HeadphoneContext),
    .priv_class    = &headphone_class,
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = NULL,
    .outputs       = outputs,
    .flags         = AVFILTER_FLAG_SLICE_THREADS | AVFILTER_FLAG_DYNAMIC_INPUTS,
}

Definition at line 908 of file af_headphone.c.