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 "filters.h"
#include "formats.h"
#include "audio.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	AudioVectorScopeContext

Macros
#define	OFFSET(x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	TFLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Enumerations
enum	VectorScopeMode { LISSAJOUS , LISSAJOUS_XY , POLAR , MODE_NB }
enum	VectorScopeDraw { DOT , LINE , AALINE , 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, int value)
static void	draw_line (AudioVectorScopeContext *s, int x0, int y0, int x1, int y1)
static void	draw_aaline (AudioVectorScopeContext *s, int x0, int y0, int x1, int y1)
static int	fade (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	query_formats (const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
static int	config_input (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *insamples)
static int	activate (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)

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

Detailed Description

audio to video multimedia vectorscope filter

Definition in file avf_avectorscope.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(AudioVectorScopeContext, x)

Definition at line 76 of file avf_avectorscope.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 77 of file avf_avectorscope.c.

TFLAGS

#define TFLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 78 of file avf_avectorscope.c.

Enumeration Type Documentation

VectorScopeMode

enum VectorScopeMode

Enumerator
LISSAJOUS
LISSAJOUS_XY
POLAR
MODE_NB

Definition at line 36 of file avf_avectorscope.c.

VectorScopeDraw

enum VectorScopeDraw

Enumerator
DOT
LINE
AALINE
DRAW_NB

Definition at line 43 of file avf_avectorscope.c.

VectorScopeScale

enum VectorScopeScale

Enumerator
LIN
SQRT
CBRT
LOG
SCALE_NB

Definition at line 50 of file avf_avectorscope.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

avectorscope

)

draw_dot()

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

static

Definition at line 119 of file avf_avectorscope.c.

Referenced by draw_aaline(), draw_line(), and filter_frame().

draw_line()

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

static

Definition at line 139 of file avf_avectorscope.c.

Referenced by filter_frame().

draw_aaline()

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

static

Definition at line 165 of file avf_avectorscope.c.

Referenced by filter_frame().

fade()

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

static

Definition at line 199 of file avf_avectorscope.c.

query_formats()

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

static

Definition at line 233 of file avf_avectorscope.c.

config_input()

static int config_input ( AVFilterLink * inlink )

static

Definition at line 261 of file avf_avectorscope.c.

config_output()

static int config_output ( AVFilterLink * outlink )

static

Definition at line 271 of file avf_avectorscope.c.

filter_frame()

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

static

Definition at line 288 of file avf_avectorscope.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 439 of file avf_avectorscope.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 466 of file avf_avectorscope.c.

Variable Documentation

avectorscope_options

const AVOption avectorscope_options[]

static

Definition at line 80 of file avf_avectorscope.c.

audiovectorscope_inputs

const AVFilterPad audiovectorscope_inputs[]

static

Initial value:

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

Definition at line 473 of file avf_avectorscope.c.

audiovectorscope_outputs

const AVFilterPad audiovectorscope_outputs[]

static

Initial value:

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

Definition at line 481 of file avf_avectorscope.c.

ff_avf_avectorscope

const FFFilter ff_avf_avectorscope

Initial value:

= {
    .p.name        = "avectorscope",
    .p.description = NULL_IF_CONFIG_SMALL("Convert input audio to vectorscope video output."),
    .p.priv_class  = &avectorscope_class,
    .p.flags       = AVFILTER_FLAG_SLICE_THREADS,
    .uninit        = uninit,
    .priv_size     = sizeof(AudioVectorScopeContext),
    .activate      = activate,
    FILTER_INPUTS(audiovectorscope_inputs),
    FILTER_OUTPUTS(audiovectorscope_outputs),
    FILTER_QUERY_FUNC2(query_formats),
    .process_command = ff_filter_process_command,
}

Definition at line 489 of file avf_avectorscope.c.