avf_showspatial.c File Reference

#include <float.h>
#include <math.h>
#include "libavcodec/avfft.h"
#include "libavutil/audio_fifo.h"
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "audio.h"
#include "video.h"
#include "avfilter.h"
#include "filters.h"
#include "internal.h"
#include "window_func.h"

Go to the source code of this file.

Data Structures
struct	ShowSpatialContext

Macros
#define	OFFSET(x)   offsetof(ShowSpatialContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	RE(y, ch)   s->fft_data[ch][y].re
#define	IM(y, ch)   s->fft_data[ch][y].im

Functions
	AVFILTER_DEFINE_CLASS (showspatial)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	run_channel_fft (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	config_output (AVFilterLink *outlink)
static void	draw_dot (uint8_t *dst, int linesize, int value)
static int	draw_spatial (AVFilterLink *inlink, AVFrame *insamples)
static int	spatial_activate (AVFilterContext *ctx)

Variables
static const AVOption	showspatial_options []
static const AVFilterPad	showspatial_inputs []
static const AVFilterPad	showspatial_outputs []
const AVFilter	ff_avf_showspatial

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(ShowSpatialContext, x)

Definition at line 56 of file avf_showspatial.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 57 of file avf_showspatial.c.

RE

#define RE	(		y,
			ch
	)		s->fft_data[ch][y].re

Definition at line 199 of file avf_showspatial.c.

IM

#define IM	(		y,
			ch
	)		s->fft_data[ch][y].im

Definition at line 200 of file avf_showspatial.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

showspatial

)

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 70 of file avf_showspatial.c.

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 85 of file avf_showspatial.c.

run_channel_fft()

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

static

Definition at line 112 of file avf_showspatial.c.

Referenced by spatial_activate().

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 131 of file avf_showspatial.c.

draw_dot()

static void draw_dot ( uint8_t *  dst, int  linesize, int  value  )

static

Definition at line 202 of file avf_showspatial.c.

Referenced by draw_spatial().

draw_spatial()

static int draw_spatial ( AVFilterLink *  inlink, AVFrame *  insamples  )

static

Definition at line 211 of file avf_showspatial.c.

Referenced by spatial_activate().

spatial_activate()

static int spatial_activate ( AVFilterContext *  ctx )

static

Definition at line 260 of file avf_showspatial.c.

Variable Documentation

showspatial_options

const AVOption showspatial_options[]

static

Initial value:

= {
    { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "512x512"}, 0, 0, FLAGS },
    { "s",    "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "512x512"}, 0, 0, FLAGS },
    { "win_size", "set window size", OFFSET(win_size), AV_OPT_TYPE_INT, {.i64 = 4096}, 1024, 65536, FLAGS },
    WIN_FUNC_OPTION("win_func", OFFSET(win_func), FLAGS, WFUNC_HANNING),
    { "overlap", "set window overlap", OFFSET(overlap), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS },
    { NULL }
}

Definition at line 59 of file avf_showspatial.c.

showspatial_inputs

const AVFilterPad showspatial_inputs[]

static

Initial value:

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

Definition at line 323 of file avf_showspatial.c.

showspatial_outputs

const AVFilterPad showspatial_outputs[]

static

Initial value:

= {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = config_output,
    },
}

Definition at line 330 of file avf_showspatial.c.

ff_avf_showspatial

const AVFilter ff_avf_showspatial

Initial value:

= {
    .name          = "showspatial",
    .description   = NULL_IF_CONFIG_SMALL("Convert input audio to a spatial video output."),
    .uninit        = uninit,
    .priv_size     = sizeof(ShowSpatialContext),
    FILTER_INPUTS(showspatial_inputs),
    FILTER_OUTPUTS(showspatial_outputs),
    FILTER_QUERY_FUNC(query_formats),
    .activate      = spatial_activate,
    .priv_class    = &showspatial_class,
    .flags         = AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 338 of file avf_showspatial.c.