#include <math.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 "filters.h"
#include "internal.h"
#include "audio.h"

Data Structures
struct	HeadphoneContext

struct	HeadphoneContext::headphone_inputs

struct	ThreadData
	Used for passing data between threads. More...

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	check_ir (AVFilterLink *inlink, int input_number)

static int	headphone_frame (HeadphoneContext s, AVFrame in, AVFilterLink *outlink)

static int	convert_coeffs (AVFilterContext ctx, AVFilterLink inlink)

static int	activate (AVFilterContext *ctx)

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 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

#define TIME_DOMAIN 0

Definition at line 35 of file af_headphone.c.

Referenced by convert_coeffs(), and headphone_frame().

#define FREQUENCY_DOMAIN 1

Definition at line 36 of file af_headphone.c.

Referenced by convert_coeffs().

#define HRIR_STEREO 0

Definition at line 38 of file af_headphone.c.

Referenced by convert_coeffs().

#define HRIR_MULTI 1

Definition at line 39 of file af_headphone.c.

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

#define OFFSET ( x ) offsetof(HeadphoneContext, x)

Definition at line 827 of file af_headphone.c.

#define FLAGS AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 828 of file af_headphone.c.

Function Documentation

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

static

Definition at line 89 of file af_headphone.c.

Referenced by parse_map().

static void parse_map ( AVFilterContext * ctx )

static

Definition at line 113 of file af_headphone.c.

Referenced by init().

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

static

Definition at line 162 of file af_headphone.c.

Referenced by headphone_frame().

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

static

Definition at line 235 of file af_headphone.c.

Referenced by headphone_frame().

static int check_ir	(	AVFilterLink *	inlink,
		int	input_number
	)

static

Definition at line 329 of file af_headphone.c.

Referenced by activate().

static int headphone_frame	(	HeadphoneContext *	s,
		AVFrame *	in,
		AVFilterLink *	outlink
	)

static

Definition at line 347 of file af_headphone.c.

Referenced by activate().

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

static

Definition at line 382 of file af_headphone.c.

Referenced by activate().

static int activate ( AVFilterContext * ctx )

static

Definition at line 602 of file af_headphone.c.

static int query_formats ( AVFilterContext * ctx )

static

Definition at line 666 of file af_headphone.c.

static int config_input ( AVFilterLink * inlink )

static

Definition at line 719 of file af_headphone.c.

Referenced by init().

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 732 of file af_headphone.c.

static int config_output ( AVFilterLink * outlink )

static

Definition at line 777 of file af_headphone.c.

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 797 of file af_headphone.c.

AVFILTER_DEFINE_CLASS ( headphone )

Variable Documentation

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 830 of file af_headphone.c.

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 846 of file af_headphone.c.

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,
    .activate      = activate,
    .inputs        = NULL,
    .outputs       = outputs,
    .flags         = AVFILTER_FLAG_SLICE_THREADS | AVFILTER_FLAG_DYNAMIC_INPUTS,
}

Definition at line 855 of file af_headphone.c.

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation