avf_showcwt.c File Reference

#include <float.h>
#include <math.h>
#include "libavutil/mem.h"
#include "libavutil/tx.h"
#include "libavutil/channel_layout.h"
#include "libavutil/float_dsp.h"
#include "libavutil/cpu.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "audio.h"
#include "formats.h"
#include "video.h"
#include "avfilter.h"
#include "filters.h"

Go to the source code of this file.

Data Structures
struct	ShowCWTContext

Macros
#define	OFFSET(x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	DRAW_BAR_COLOR(x)

Enumerations
enum	FrequencyScale {   FSCALE_LINEAR , FSCALE_LOG , FSCALE_BARK , FSCALE_MEL ,   FSCALE_ERBS , FSCALE_SQRT , FSCALE_CBRT , FSCALE_QDRT ,   FSCALE_FM , NB_FSCALE }
enum	IntensityScale {   ISCALE_LOG , ISCALE_LINEAR , ISCALE_SQRT , ISCALE_CBRT ,   ISCALE_QDRT , NB_ISCALE }
enum	DirectionMode {   DIRECTION_LR , DIRECTION_RL , DIRECTION_UD , DIRECTION_DU ,   NB_DIRECTION }
enum	SlideMode { SLIDE_REPLACE , SLIDE_SCROLL , SLIDE_FRAME , NB_SLIDE }

Functions
	AVFILTER_DEFINE_CLASS (showcwt)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
static float	frequency_band (float *frequency_band, int frequency_band_count, float frequency_range, float frequency_offset, int frequency_scale, float deviation)
static float	remap_log (ShowCWTContext *s, float value, int iscale, float log_factor)
static int	run_channel_cwt_prepare (AVFilterContext *ctx, void *arg, int jobnr, int ch)
static void	draw_bar (ShowCWTContext *s, int y, float Y, float U, float V)
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 int	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_outputs []
const FFFilter	ff_avf_showcwt

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(ShowCWTContext, x)

Definition at line 130 of file avf_showcwt.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 131 of file avf_showcwt.c.

DRAW_BAR_COLOR

#define DRAW_BAR_COLOR

(

x

)

Value:

do { \
    if (Y <= ht) { \
        dstY[x] = 0; \
        dstU[x] = 128; \
        dstV[x] = 128; \
    } else { \
        float mul = (Y - ht) * bh[0]; \
        dstY[x] = av_clip_uint8(lrintf(Y * mul * 255.f)); \
        dstU[x] = av_clip_uint8(lrintf((U-0.5f) * 128.f + 128)); \
        dstV[x] = av_clip_uint8(lrintf((V-0.5f) * 128.f + 128)); \
    } \
} while (0)

Definition at line 365 of file avf_showcwt.c.

Referenced by draw_bar().

Enumeration Type Documentation

FrequencyScale

enum FrequencyScale

Enumerator
FSCALE_LINEAR
FSCALE_LOG
FSCALE_BARK
FSCALE_MEL
FSCALE_ERBS
FSCALE_SQRT
FSCALE_CBRT
FSCALE_QDRT
FSCALE_FM
NB_FSCALE

Definition at line 37 of file avf_showcwt.c.

IntensityScale

enum IntensityScale

Enumerator
ISCALE_LOG
ISCALE_LINEAR
ISCALE_SQRT
ISCALE_CBRT
ISCALE_QDRT
NB_ISCALE

Definition at line 50 of file avf_showcwt.c.

DirectionMode

enum DirectionMode

Enumerator
DIRECTION_LR
DIRECTION_RL
DIRECTION_UD
DIRECTION_DU
NB_DIRECTION

Definition at line 59 of file avf_showcwt.c.

SlideMode

enum SlideMode

Enumerator
SLIDE_REPLACE
SLIDE_SCROLL
SLIDE_FRAME
NB_SLIDE

Definition at line 67 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 183 of file avf_showcwt.c.

Referenced by config_output().

query_formats()

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

static

Definition at line 225 of file avf_showcwt.c.

frequency_band()

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

static

Definition at line 245 of file avf_showcwt.c.

Referenced by config_output(), and frequency_band().

remap_log()

static float remap_log ( ShowCWTContext * s, float value, int iscale, float log_factor )

static

Definition at line 302 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 335 of file avf_showcwt.c.

Referenced by run_channels_cwt_prepare().

draw_bar()

static void draw_bar ( ShowCWTContext * s, int y, float Y, float U, float V )

static

Definition at line 379 of file avf_showcwt.c.

Referenced by draw().

draw()

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

static

Definition at line 440 of file avf_showcwt.c.

Referenced by calc_draw_region(), draw_line(), draw_text(), draw_text(), ff_blend_mask(), ff_blend_rectangle(), ff_copy_rectangle2(), ff_draw_color(), ff_draw_init(), ff_draw_init2(), ff_draw_init_from_link(), 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(), qrencodesrc_query_formats(), 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 641 of file avf_showcwt.c.

Referenced by activate().

compute_kernel()

static int compute_kernel ( AVFilterContext * ctx )

static

Definition at line 712 of file avf_showcwt.c.

Referenced by config_output().

config_output()

static int config_output ( AVFilterLink * outlink )

static

Definition at line 801 of file avf_showcwt.c.

output_frame()

static int output_frame ( AVFilterContext * ctx )

static

Definition at line 1038 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 1222 of file avf_showcwt.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 1235 of file avf_showcwt.c.

Variable Documentation

showcwt_options

const AVOption showcwt_options[]

static

Definition at line 133 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 1314 of file avf_showcwt.c.

ff_avf_showcwt

const FFFilter ff_avf_showcwt

Initial value:

= {
    .p.name        = "showcwt",
    .p.description = NULL_IF_CONFIG_SMALL("Convert input audio to a CWT (Continuous Wavelet Transform) spectrum video output."),
    .p.priv_class  = &showcwt_class,
    .p.flags       = AVFILTER_FLAG_SLICE_THREADS,
    .uninit        = uninit,
    .priv_size     = sizeof(ShowCWTContext),
    FILTER_INPUTS(ff_audio_default_filterpad),
    FILTER_OUTPUTS(showcwt_outputs),
    FILTER_QUERY_FUNC2(query_formats),
    .activate      = activate,
}

Definition at line 1322 of file avf_showcwt.c.