avf_aphasemeter.c File Reference

#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.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	AudioPhaseMeterContext

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

Functions
	AVFILTER_DEFINE_CLASS (aphasemeter)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	config_video_output (AVFilterLink *outlink)
static int	get_x (float phase, int w)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static av_cold void	uninit (AVFilterContext *ctx)
static av_cold int	init (AVFilterContext *ctx)

Variables
static const AVOption	aphasemeter_options []
static const AVFilterPad	inputs []
AVFilter	ff_avf_aphasemeter

Detailed Description

audio to video multimedia aphasemeter filter

Definition in file avf_aphasemeter.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(AudioPhaseMeterContext, x)

Definition at line 49 of file avf_aphasemeter.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 50 of file avf_aphasemeter.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

aphasemeter

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 67 of file avf_aphasemeter.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 102 of file avf_aphasemeter.c.

config_video_output()

static int config_video_output ( AVFilterLink *  outlink )

static

Definition at line 118 of file avf_aphasemeter.c.

Referenced by init().

get_x()

static int get_x ( float  phase, int  w  )

inlinestatic

Definition at line 138 of file avf_aphasemeter.c.

Referenced by filter_frame().

filter_frame()

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

static

Definition at line 143 of file avf_aphasemeter.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 222 of file avf_aphasemeter.c.

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 232 of file avf_aphasemeter.c.

Variable Documentation

aphasemeter_options

const AVOption aphasemeter_options[]

static

Initial value:

= {
    { "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
    { "r",    "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
    { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="800x400"}, 0, 0, FLAGS },
    { "s",    "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="800x400"}, 0, 0, FLAGS },
    { "rc", "set red contrast",   OFFSET(contrast[0]), AV_OPT_TYPE_INT, {.i64=2}, 0, 255, FLAGS },
    { "gc", "set green contrast", OFFSET(contrast[1]), AV_OPT_TYPE_INT, {.i64=7}, 0, 255, FLAGS },
    { "bc", "set blue contrast",  OFFSET(contrast[2]), AV_OPT_TYPE_INT, {.i64=1}, 0, 255, FLAGS },
    { "mpc", "set median phase color", OFFSET(mpc_str), AV_OPT_TYPE_STRING, {.str = "none"}, 0, 0, FLAGS },
    { "video", "set video output", OFFSET(do_video), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
    { NULL }
}

Definition at line 52 of file avf_aphasemeter.c.

inputs

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 268 of file avf_aphasemeter.c.

ff_avf_aphasemeter

AVFilter ff_avf_aphasemeter

Initial value:

= {
    .name          = "aphasemeter",
    .description   = NULL_IF_CONFIG_SMALL("Convert input audio to phase meter video output."),
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .priv_size     = sizeof(AudioPhaseMeterContext),
    .inputs        = inputs,
    .outputs       = NULL,
    .priv_class    = &aphasemeter_class,
    .flags         = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
}

Definition at line 278 of file avf_aphasemeter.c.