vf_monochrome.c File Reference

#include <float.h>
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "filters.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	MonochromeContext

Macros
#define	PROCESS()
#define	OFFSET(x)
#define	VF   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Functions
static float	envelope (const float x)
static float	filter (float b, float r, float u, float v, float size)
static int	monochrome_slice8 (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	monochrome_slice16 (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	clear_slice8 (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	clear_slice16 (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	filter_frame (AVFilterLink *inlink, AVFrame *frame)
static av_cold int	config_input (AVFilterLink *inlink)
	AVFILTER_DEFINE_CLASS (monochrome)

Variables
static enum AVPixelFormat	pixel_fmts []
static const AVFilterPad	monochrome_inputs []
static const AVOption	monochrome_options []
const FFFilter	ff_vf_monochrome

Macro Definition Documentation

PROCESS

#define PROCESS

(

)

Value:

    const int cx = x >> subw;                \
    float y = yptr[x] * imax;                \
    float u = uptr[cx] * imax - .5f;         \
    float v = vptr[cx] * imax - .5f;         \
    float tt, t, ny;                         \
                                             \
    ny = filter(b, r, u, v, size);           \
    tt = envelope(y);                        \
    t = tt + (1.f - tt) * ihigh;             \
    ny = (1.f - t) * y + t * ny * y;

Definition at line 67 of file vf_monochrome.c.

Referenced by monochrome_slice16(), and monochrome_slice8().

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(MonochromeContext, x)

Definition at line 270 of file vf_monochrome.c.

VF

#define VF   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 271 of file vf_monochrome.c.

Function Documentation

envelope()

static float envelope ( const float x )

static

Definition at line 45 of file vf_monochrome.c.

Referenced by amqp_proto_read(), feed(), get_envelope(), get_factors(), and waves_synth().

filter()

static float filter ( float b, float r, float u, float v, float size )

static

Definition at line 60 of file vf_monochrome.c.

monochrome_slice8()

static int monochrome_slice8 ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 79 of file vf_monochrome.c.

Referenced by config_input().

monochrome_slice16()

static int monochrome_slice16 ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 118 of file vf_monochrome.c.

Referenced by config_input().

clear_slice8()

static int clear_slice8 ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 157 of file vf_monochrome.c.

Referenced by config_input().

clear_slice16()

static int clear_slice16 ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 183 of file vf_monochrome.c.

Referenced by config_input().

filter_frame()

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

static

Definition at line 211 of file vf_monochrome.c.

config_input()

static av_cold int config_input ( AVFilterLink * inlink )

static

Definition at line 245 of file vf_monochrome.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

monochrome

)

Variable Documentation

pixel_fmts

enum AVPixelFormat pixel_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
    AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
    AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
    AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
    AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
    AV_PIX_FMT_YUVJ411P,
    AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
    AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
    AV_PIX_FMT_YUV440P10,
    AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
    AV_PIX_FMT_YUV440P12,
    AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
    AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
    AV_PIX_FMT_YUVA420P,  AV_PIX_FMT_YUVA422P,   AV_PIX_FMT_YUVA444P,
    AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
    AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
    AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
    AV_PIX_FMT_NONE
}

Definition at line 224 of file vf_monochrome.c.

monochrome_inputs

const AVFilterPad monochrome_inputs[]

static

Initial value:

= {
    {
        .name           = "default",
        .type           = AVMEDIA_TYPE_VIDEO,
        .flags          = AVFILTERPAD_FLAG_NEEDS_WRITABLE,
        .filter_frame   = filter_frame,
        .config_props   = config_input,
    },
}

Definition at line 260 of file vf_monochrome.c.

monochrome_options

const AVOption monochrome_options[]

static

Initial value:

= {
    { "cb",   "set the chroma blue spot",    OFFSET(b),    AV_OPT_TYPE_FLOAT, {.dbl=0},-1, 1, VF },
    { "cr",   "set the chroma red spot",     OFFSET(r),    AV_OPT_TYPE_FLOAT, {.dbl=0},-1, 1, VF },
    { "size", "set the color filter size",   OFFSET(size), AV_OPT_TYPE_FLOAT, {.dbl=1},.1,10, VF },
    { "high", "set the highlights strength", OFFSET(high), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, 1, VF },
    { NULL }
}

Definition at line 273 of file vf_monochrome.c.

ff_vf_monochrome

const FFFilter ff_vf_monochrome

Initial value:

= {
    .p.name        = "monochrome",
    .p.description = NULL_IF_CONFIG_SMALL("Convert video to gray using custom color filter."),
    .p.priv_class  = &monochrome_class,
    .p.flags       = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
    .priv_size     = sizeof(MonochromeContext),
    FILTER_INPUTS(monochrome_inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_PIXFMTS_ARRAY(pixel_fmts),
    .process_command = ff_filter_process_command,
}

Definition at line 283 of file vf_monochrome.c.