avf_avectorscope.c File Reference

audio to video multimedia vectorscope filter More...

#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "formats.h"
#include "audio.h"
#include "video.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	AudioVectorScopeContext

Macros
#define	OFFSET(x)   offsetof(AudioVectorScopeContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Enumerations
enum	VectorScopeMode { LISSAJOUS, LISSAJOUS_XY, POLAR, MODE_NB }
enum	VectorScopeDraw { DOT, LINE, DRAW_NB }
enum	VectorScopeScale {   LIN, SQRT, CBRT, LOG,   SCALE_NB }

Functions
	AVFILTER_DEFINE_CLASS (avectorscope)
static void	draw_dot (AudioVectorScopeContext *s, unsigned x, unsigned y)
static void	draw_line (AudioVectorScopeContext *s, int x0, int y0, int x1, int y1)
static void	fade (AudioVectorScopeContext *s)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *insamples)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	avectorscope_options []
static const AVFilterPad	audiovectorscope_inputs []
static const AVFilterPad	audiovectorscope_outputs []
AVFilter	ff_avf_avectorscope

Detailed Description

audio to video multimedia vectorscope filter

Definition in file avf_avectorscope.c.

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(AudioVectorScopeContext, x)

Definition at line 74 of file avf_avectorscope.c.

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 75 of file avf_avectorscope.c.

Enumeration Type Documentation

enum VectorScopeMode

Enumerator
LISSAJOUS
LISSAJOUS_XY
POLAR
MODE_NB

Definition at line 36 of file avf_avectorscope.c.

enum VectorScopeDraw

Enumerator
DOT
LINE
DRAW_NB

Definition at line 43 of file avf_avectorscope.c.

enum VectorScopeScale

Enumerator
LIN
SQRT
CBRT
LOG
SCALE_NB

Definition at line 49 of file avf_avectorscope.c.

Function Documentation

AVFILTER_DEFINE_CLASS

(

avectorscope

)

static void draw_dot ( AudioVectorScopeContext *  s, unsigned  x, unsigned  y  )

static

Definition at line 115 of file avf_avectorscope.c.

Referenced by draw_line(), and filter_frame().

static void draw_line ( AudioVectorScopeContext *  s, int  x0, int  y0, int  x1, int  y1  )

static

Definition at line 135 of file avf_avectorscope.c.

Referenced by filter_frame().

static void fade ( AudioVectorScopeContext *  s )

static

Definition at line 161 of file avf_avectorscope.c.

Referenced by filter_frame().

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 180 of file avf_avectorscope.c.

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 207 of file avf_avectorscope.c.

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 221 of file avf_avectorscope.c.

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

static

Definition at line 236 of file avf_avectorscope.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 368 of file avf_avectorscope.c.

Variable Documentation

const AVOption avectorscope_options[]

static

Definition at line 77 of file avf_avectorscope.c.

const AVFilterPad audiovectorscope_inputs[]

static

Initial value:

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

Definition at line 375 of file avf_avectorscope.c.

const AVFilterPad audiovectorscope_outputs[]

static

Initial value:

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

Definition at line 385 of file avf_avectorscope.c.

AVFilter ff_avf_avectorscope

Initial value:

= {
    .name          = "avectorscope",
    .description   = NULL_IF_CONFIG_SMALL("Convert input audio to vectorscope video output."),
    .uninit        = uninit,
    .query_formats = query_formats,
    .priv_size     = sizeof(AudioVectorScopeContext),
    .inputs        = audiovectorscope_inputs,
    .outputs       = audiovectorscope_outputs,
    .priv_class    = &avectorscope_class,
}

Definition at line 394 of file avf_avectorscope.c.