avf_abitscope.c File Reference

#include "libavutil/avstring.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "audio.h"
#include "video.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	AudioBitScopeContext

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

Functions
	AVFILTER_DEFINE_CLASS (abitscope)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
static void	count_bits (AudioBitScopeContext *s, uint32_t sample, int max)
static int	filter_frame (AVFilterLink *inlink, AVFrame *insamples)
static int	activate (AVFilterContext *ctx)

Variables
static const AVOption	abitscope_options []
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
const AVFilter	ff_avf_abitscope

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(AudioBitScopeContext, x)

Definition at line 46 of file avf_abitscope.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 47 of file avf_abitscope.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

abitscope

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 60 of file avf_abitscope.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 91 of file avf_abitscope.c.

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 127 of file avf_abitscope.c.

count_bits()

static void count_bits ( AudioBitScopeContext *  s, uint32_t  sample, int  max  )

static

Definition at line 139 of file avf_abitscope.c.

Referenced by filter_frame().

filter_frame()

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

static

Definition at line 149 of file avf_abitscope.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 223 of file avf_abitscope.c.

Variable Documentation

abitscope_options

const AVOption abitscope_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="1024x256"}, 0, 0, FLAGS },
    { "s",    "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="1024x256"}, 0, 0, FLAGS },
    { "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
    { NULL }
}

Definition at line 49 of file avf_abitscope.c.

inputs

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 245 of file avf_abitscope.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 253 of file avf_abitscope.c.

ff_avf_abitscope

const AVFilter ff_avf_abitscope

Initial value:

= {
    .name          = "abitscope",
    .description   = NULL_IF_CONFIG_SMALL("Convert input audio to audio bit scope video output."),
    .priv_size     = sizeof(AudioBitScopeContext),
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(outputs),
    FILTER_QUERY_FUNC(query_formats),
    .activate      = activate,
    .priv_class    = &abitscope_class,
}

Definition at line 261 of file avf_abitscope.c.