avf_showcwt.c File Reference

#include <float.h>
#include <math.h>
#include "libavutil/tx.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/cpu.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "audio.h"
#include "video.h"
#include "avfilter.h"
#include "filters.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	ShowCWTContext

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

Enumerations
enum	FrequencyScale {   FSCALE_LINEAR, FSCALE_LOG2, FSCALE_BARK, FSCALE_MEL,   FSCALE_ERBS, NB_FSCALE, FS_LINEAR, FS_LOG,   FS_RLOG, NB_FSCALES, F_LINEAR, F_LOG,   NB_FSCALES }
enum	DirectionMode {   DIRECTION_LR, DIRECTION_RL, DIRECTION_UD, DIRECTION_DU,   NB_DIRECTION }
enum	SlideMode {   REPLACE, SCROLL, NB_SLIDES, SLIDE_REPLACE,   SLIDE_SCROLL, SLIDE_FRAME, NB_SLIDE, REPLACE,   SCROLL, FULLFRAME, RSCROLL, LREPLACE,   NB_SLIDES, REPLACE, SCROLL, FULLFRAME,   RSCROLL, NB_SLIDES }

Functions
	AVFILTER_DEFINE_CLASS (showcwt)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static void	frequency_band (float *frequency_band, int frequency_band_count, float frequency_range, float frequency_offset, int frequency_scale, float deviation)
static float	remap_log (float value, float log_factor)
static int	run_channel_cwt_prepare (AVFilterContext *ctx, void *arg, int jobnr, int ch)
static int	draw (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	run_channel_cwt (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static void	compute_kernel (AVFilterContext *ctx)
static int	config_output (AVFilterLink *outlink)
static int	output_frame (AVFilterContext *ctx)
static int	run_channels_cwt_prepare (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	activate (AVFilterContext *ctx)

Variables
static const AVOption	showcwt_options []
static const AVFilterPad	showcwt_inputs []
static const AVFilterPad	showcwt_outputs []
const AVFilter	ff_avf_showcwt

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(ShowCWTContext, x)

Definition at line 116 of file avf_showcwt.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 117 of file avf_showcwt.c.

Enumeration Type Documentation

FrequencyScale

enum FrequencyScale

Enumerator
FSCALE_LINEAR
FSCALE_LOG2
FSCALE_BARK
FSCALE_MEL
FSCALE_ERBS
NB_FSCALE
FS_LINEAR
FS_LOG
FS_RLOG
NB_FSCALES
F_LINEAR
F_LOG
NB_FSCALES

Definition at line 37 of file avf_showcwt.c.

DirectionMode

enum DirectionMode

Enumerator
DIRECTION_LR
DIRECTION_RL
DIRECTION_UD
DIRECTION_DU
NB_DIRECTION

Definition at line 46 of file avf_showcwt.c.

SlideMode

enum SlideMode

Enumerator
REPLACE
SCROLL
NB_SLIDES
SLIDE_REPLACE
SLIDE_SCROLL
SLIDE_FRAME
NB_SLIDE
REPLACE
SCROLL
FULLFRAME
RSCROLL
LREPLACE
NB_SLIDES
REPLACE
SCROLL
FULLFRAME
RSCROLL
NB_SLIDES

Definition at line 54 of file avf_showcwt.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

showcwt

)

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 155 of file avf_showcwt.c.

Referenced by config_output().

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 187 of file avf_showcwt.c.

frequency_band()

static void frequency_band ( float *  frequency_band, int  frequency_band_count, float  frequency_range, float  frequency_offset, int  frequency_scale, float  deviation  )

static

Definition at line 216 of file avf_showcwt.c.

Referenced by config_output().

remap_log()

static float remap_log ( float  value, float  log_factor  )

static

Definition at line 251 of file avf_showcwt.c.

Referenced by draw().

run_channel_cwt_prepare()

static int run_channel_cwt_prepare ( AVFilterContext *  ctx, void *  arg, int  jobnr, int  ch  )

static

Definition at line 260 of file avf_showcwt.c.

Referenced by run_channels_cwt_prepare().

draw()

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

static

Definition at line 297 of file avf_showcwt.c.

Referenced by draw_line(), draw_text(), ff_blend_mask(), ff_blend_rectangle(), ff_copy_rectangle2(), ff_draw_color(), ff_draw_init(), ff_draw_init2(), ff_draw_round_to_sub(), ff_draw_supported_pixel_formats(), ff_fill_rectangle(), main(), mss2_decode_frame(), output_frame(), pick_color16(), pick_color8(), pointer_at(), reverse_color16(), and reverse_color8().

run_channel_cwt()

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

static

Definition at line 460 of file avf_showcwt.c.

Referenced by activate().

compute_kernel()

static void compute_kernel ( AVFilterContext *  ctx )

static

Definition at line 498 of file avf_showcwt.c.

Referenced by config_output().

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 542 of file avf_showcwt.c.

output_frame()

static int output_frame ( AVFilterContext *  ctx )

static

Definition at line 721 of file avf_showcwt.c.

Referenced by activate().

run_channels_cwt_prepare()

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

static

Definition at line 905 of file avf_showcwt.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 918 of file avf_showcwt.c.

Variable Documentation

showcwt_options

const AVOption showcwt_options[]

static

Definition at line 119 of file avf_showcwt.c.

showcwt_inputs

const AVFilterPad showcwt_inputs[]

static

Initial value:

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

Definition at line 1002 of file avf_showcwt.c.

showcwt_outputs

const AVFilterPad showcwt_outputs[]

static

Initial value:

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

Definition at line 1009 of file avf_showcwt.c.

ff_avf_showcwt

const AVFilter ff_avf_showcwt

Initial value:

= {
    .name          = "showcwt",
    .description   = NULL_IF_CONFIG_SMALL("Convert input audio to a CWT (Continuous Wavelet Transform) spectrum video output."),
    .uninit        = uninit,
    .priv_size     = sizeof(ShowCWTContext),
    FILTER_INPUTS(showcwt_inputs),
    FILTER_OUTPUTS(showcwt_outputs),
    FILTER_QUERY_FUNC(query_formats),
    .activate      = activate,
    .priv_class    = &showcwt_class,
    .flags         = AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 1017 of file avf_showcwt.c.