FFmpeg
Data Structures | Macros | Functions | Variables
af_headphone.c File Reference
#include <math.h>
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/float_dsp.h"
#include "libavutil/intmath.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/tx.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "audio.h"

Go to the source code of this file.

Data Structures

struct  HeadphoneContext
 
struct  HeadphoneContext::hrir_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 (const char *arg, enum AVChannel *rchannel)
 
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 (const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
 
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 []
 
const AVFilter ff_af_headphone
 

Macro Definition Documentation

◆ TIME_DOMAIN

#define TIME_DOMAIN   0

Definition at line 36 of file af_headphone.c.

◆ FREQUENCY_DOMAIN

#define FREQUENCY_DOMAIN   1

Definition at line 37 of file af_headphone.c.

◆ HRIR_STEREO

#define HRIR_STEREO   0

Definition at line 39 of file af_headphone.c.

◆ HRIR_MULTI

#define HRIR_MULTI   1

Definition at line 40 of file af_headphone.c.

◆ OFFSET

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

Definition at line 752 of file af_headphone.c.

◆ FLAGS

#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 753 of file af_headphone.c.

Function Documentation

◆ parse_channel_name()

static int parse_channel_name ( const char *  arg,
enum AVChannel *  rchannel 
)
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 101 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 144 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 215 of file af_headphone.c.

Referenced by headphone_frame().

◆ check_ir()

static int check_ir ( AVFilterLink *  inlink,
int  input_number 
)
static

Definition at line 308 of file af_headphone.c.

Referenced by activate().

◆ headphone_frame()

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

Definition at line 336 of file af_headphone.c.

Referenced by activate().

◆ convert_coeffs()

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

Definition at line 372 of file af_headphone.c.

Referenced by activate().

◆ activate()

static int activate ( AVFilterContext *  ctx)
static

Definition at line 539 of file af_headphone.c.

◆ query_formats()

static int query_formats ( const AVFilterContext *  ctx,
AVFilterFormatsConfig **  cfg_in,
AVFilterFormatsConfig **  cfg_out 
)
static

Definition at line 597 of file af_headphone.c.

◆ config_input()

static int config_input ( AVFilterLink *  inlink)
static

Definition at line 650 of file af_headphone.c.

Referenced by init().

◆ init()

static av_cold int init ( AVFilterContext *  ctx)
static

Definition at line 665 of file af_headphone.c.

◆ config_output()

static int config_output ( AVFilterLink *  outlink)
static

Definition at line 708 of file af_headphone.c.

◆ uninit()

static av_cold void uninit ( AVFilterContext *  ctx)
static

Definition at line 728 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, .unit = "type" },
{ "time", "time domain", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, .flags = FLAGS, .unit = "type" },
{ "freq", "frequency domain", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, .flags = FLAGS, .unit = "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, .unit = "hrir" },
{ "stereo", "hrir files have exactly 2 channels", 0, AV_OPT_TYPE_CONST, {.i64=HRIR_STEREO}, 0, 0, .flags = FLAGS, .unit = "hrir" },
{ "multich", "single multichannel hrir file", 0, AV_OPT_TYPE_CONST, {.i64=HRIR_MULTI}, 0, 0, .flags = FLAGS, .unit = "hrir" },
{ NULL }
}

Definition at line 755 of file af_headphone.c.

◆ outputs

const AVFilterPad outputs[]
static
Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_output,
},
}

Definition at line 771 of file af_headphone.c.

◆ ff_af_headphone

const 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,
.activate = activate,
.inputs = NULL,
FILTER_OUTPUTS(outputs),
FILTER_QUERY_FUNC2(query_formats),
.flags = AVFILTER_FLAG_SLICE_THREADS | AVFILTER_FLAG_DYNAMIC_INPUTS,
}

Definition at line 779 of file af_headphone.c.

activate
static int activate(AVFilterContext *ctx)
Definition: af_headphone.c:539
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
AVFILTER_FLAG_DYNAMIC_INPUTS
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
Definition: avfilter.h:141
OFFSET
#define OFFSET(x)
Definition: af_headphone.c:752
HRIR_MULTI
#define HRIR_MULTI
Definition: af_headphone.c:40
HRIR_STEREO
#define HRIR_STEREO
Definition: af_headphone.c:39
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
query_formats
static int query_formats(const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
Definition: af_headphone.c:597
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: af_headphone.c:728
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:263
NULL
#define NULL
Definition: coverity.c:32
FLAGS
#define FLAGS
Definition: af_headphone.c:753
outputs
static const AVFilterPad outputs[]
Definition: af_headphone.c:771
inputs
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
Definition: filter_design.txt:243
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:94
size
int size
Definition: twinvq_data.h:10344
HeadphoneContext
Definition: af_headphone.c:42
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Underlying C type is float.
Definition: opt.h:271
init
static av_cold int init(AVFilterContext *ctx)
Definition: af_headphone.c:665
FILTER_QUERY_FUNC2
#define FILTER_QUERY_FUNC2(func)
Definition: filters.h:239
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Underlying C type is int.
Definition: opt.h:259
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:152
map
const VDPAUPixFmtMap * map
Definition: hwcontext_vdpau.c:71
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Underlying C type is a uint8_t* that is either NULL or points to a C string allocated with the av_mal...
Definition: opt.h:276
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Special option type for declaring named constants.
Definition: opt.h:299
config_output
static int config_output(AVFilterLink *outlink)
Definition: af_headphone.c:708
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