doxygen/trunk/vf__colorcontrast_8c_source.html

/*

 * Copyright (c) 2021 Paul B Mahol

 *

 * This file is part of FFmpeg.

 *

 * FFmpeg is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * FFmpeg is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with FFmpeg; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */


#include <float.h>


#include "libavutil/opt.h"

#include "libavutil/pixdesc.h"

#include "avfilter.h"

#include "drawutils.h"

#include "filters.h"

#include "video.h"


#define R 0

#define G 1

#define B 2


typedef struct ColorContrastContext {

    const AVClass *class;


    float rc, gm, by;

    float rcw, gmw, byw;

    float preserve;


    int step;

    int depth;

    uint8_t rgba_map[4];


    int (*do_slice)(AVFilterContext *s, void *arg,

                    int jobnr, int nb_jobs);

} ColorContrastContext;


static inline float lerpf(float v0, float v1, float f)

{

    return v0 + (v1 - v0) * f;

}


#define PROCESS(max)                                                    \

    br = (b + r) * 0.5f;                                                \

    gb = (g + b) * 0.5f;                                                \

    rg = (r + g) * 0.5f;                                                \

                                                                        \

    gd = g - br;                                                        \

    bd = b - rg;                                                        \

    rd = r - gb;                                                        \

                                                                        \

    g0 = g + gd * gm;                                                   \

    b0 = b - gd * gm;                                                   \

    r0 = r - gd * gm;                                                   \

                                                                        \

    g1 = g - bd * by;                                                   \

    b1 = b + bd * by;                                                   \

    r1 = r - bd * by;                                                   \

                                                                        \

    g2 = g - rd * rc;                                                   \

    b2 = b - rd * rc;                                                   \

    r2 = r + rd * rc;                                                   \

                                                                        \

    ng = av_clipf((g0 * gmw + g1 * byw + g2 * rcw) * scale, 0.f, max);  \

    nb = av_clipf((b0 * gmw + b1 * byw + b2 * rcw) * scale, 0.f, max);  \

    nr = av_clipf((r0 * gmw + r1 * byw + r2 * rcw) * scale, 0.f, max);  \

                                                                        \

    li = FFMAX3(r, g, b) + FFMIN3(r, g, b);                             \

    lo = FFMAX3(nr, ng, nb) + FFMIN3(nr, ng, nb) + FLT_EPSILON;         \

    lf = li / lo;                                                       \

                                                                        \

    r = nr * lf;                                                        \

    g = ng * lf;                                                        \

    b = nb * lf;                                                        \

                                                                        \

    nr = lerpf(nr, r, preserve);                                        \

    ng = lerpf(ng, g, preserve);                                        \

    nb = lerpf(nb, b, preserve);


static int colorcontrast_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)

{

    ColorContrastContext *s = ctx->priv;

    AVFrame *frame = arg;

    const int width = frame->width;

    const int height = frame->height;

    const int slice_start = ff_slice_pos(height, jobnr, nb_jobs);

    const int slice_end = ff_slice_pos(height, jobnr + 1, nb_jobs);

    const ptrdiff_t glinesize = frame->linesize[0];

    const ptrdiff_t blinesize = frame->linesize[1];

    const ptrdiff_t rlinesize = frame->linesize[2];

    uint8_t *gptr = frame->data[0] + slice_start * glinesize;

    uint8_t *bptr = frame->data[1] + slice_start * blinesize;

    uint8_t *rptr = frame->data[2] + slice_start * rlinesize;

    const float preserve = s->preserve;

    const float gm = s->gm * 0.5f;

    const float by = s->by * 0.5f;

    const float rc = s->rc * 0.5f;

    const float gmw = s->gmw;

    const float byw = s->byw;

    const float rcw = s->rcw;

    const float sum = gmw + byw + rcw;

    const float scale = 1.f / sum;


    for (int y = slice_start; y < slice_end && sum > FLT_EPSILON; y++) {

        for (int x = 0; x < width; x++) {

            float g = gptr[x];

            float b = bptr[x];

            float r = rptr[x];

            float g0, g1, g2;

            float b0, b1, b2;

            float r0, r1, r2;

            float gd, bd, rd;

            float gb, br, rg;

            float nr, ng, nb;

            float li, lo, lf;


            PROCESS(255.f);


            gptr[x] = av_clip_uint8(ng);

            bptr[x] = av_clip_uint8(nb);

            rptr[x] = av_clip_uint8(nr);

        }


        gptr += glinesize;

        bptr += blinesize;

        rptr += rlinesize;

    }


    return 0;

}


static int colorcontrast_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)

{

    ColorContrastContext *s = ctx->priv;

    AVFrame *frame = arg;

    const int depth = s->depth;

    const float max = (1 << depth) - 1;

    const int width = frame->width;

    const int height = frame->height;

    const int slice_start = ff_slice_pos(height, jobnr, nb_jobs);

    const int slice_end = ff_slice_pos(height, jobnr + 1, nb_jobs);

    const ptrdiff_t glinesize = frame->linesize[0] / 2;

    const ptrdiff_t blinesize = frame->linesize[1] / 2;

    const ptrdiff_t rlinesize = frame->linesize[2] / 2;

    uint16_t *gptr = (uint16_t *)frame->data[0] + slice_start * glinesize;

    uint16_t *bptr = (uint16_t *)frame->data[1] + slice_start * blinesize;

    uint16_t *rptr = (uint16_t *)frame->data[2] + slice_start * rlinesize;

    const float preserve = s->preserve;

    const float gm = s->gm * 0.5f;

    const float by = s->by * 0.5f;

    const float rc = s->rc * 0.5f;

    const float gmw = s->gmw;

    const float byw = s->byw;

    const float rcw = s->rcw;

    const float sum = gmw + byw + rcw;

    const float scale = 1.f / sum;


    for (int y = slice_start; y < slice_end && sum > FLT_EPSILON; y++) {

        for (int x = 0; x < width; x++) {

            float g = gptr[x];

            float b = bptr[x];

            float r = rptr[x];

            float g0, g1, g2;

            float b0, b1, b2;

            float r0, r1, r2;

            float gd, bd, rd;

            float gb, br, rg;

            float nr, ng, nb;

            float li, lo, lf;


            PROCESS(max);


            gptr[x] = av_clip_uintp2_c(ng, depth);

            bptr[x] = av_clip_uintp2_c(nb, depth);

            rptr[x] = av_clip_uintp2_c(nr, depth);

        }


        gptr += glinesize;

        bptr += blinesize;

        rptr += rlinesize;

    }


    return 0;

}


static int colorcontrast_slice8p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)

{

    ColorContrastContext *s = ctx->priv;

    AVFrame *frame = arg;

    const int step = s->step;

    const int width = frame->width;

    const int height = frame->height;

    const int slice_start = ff_slice_pos(height, jobnr, nb_jobs);

    const int slice_end = ff_slice_pos(height, jobnr + 1, nb_jobs);

    const ptrdiff_t linesize = frame->linesize[0];

    const uint8_t roffset = s->rgba_map[R];

    const uint8_t goffset = s->rgba_map[G];

    const uint8_t boffset = s->rgba_map[B];

    uint8_t *ptr = frame->data[0] + slice_start * linesize;

    const float preserve = s->preserve;

    const float gm = s->gm * 0.5f;

    const float by = s->by * 0.5f;

    const float rc = s->rc * 0.5f;

    const float gmw = s->gmw;

    const float byw = s->byw;

    const float rcw = s->rcw;

    const float sum = gmw + byw + rcw;

    const float scale = 1.f / sum;


    for (int y = slice_start; y < slice_end && sum > FLT_EPSILON; y++) {

        for (int x = 0; x < width; x++) {

            float g = ptr[x * step + goffset];

            float b = ptr[x * step + boffset];

            float r = ptr[x * step + roffset];

            float g0, g1, g2;

            float b0, b1, b2;

            float r0, r1, r2;

            float gd, bd, rd;

            float gb, br, rg;

            float nr, ng, nb;

            float li, lo, lf;


            PROCESS(255.f);


            ptr[x * step + goffset] = av_clip_uint8(ng);

            ptr[x * step + boffset] = av_clip_uint8(nb);

            ptr[x * step + roffset] = av_clip_uint8(nr);

        }


        ptr += linesize;

    }


    return 0;

}


static int colorcontrast_slice16p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)

{

    ColorContrastContext *s = ctx->priv;

    AVFrame *frame = arg;

    const int step = s->step;

    const int depth = s->depth;

    const float max = (1 << depth) - 1;

    const int width = frame->width;

    const int height = frame->height;

    const int slice_start = ff_slice_pos(height, jobnr, nb_jobs);

    const int slice_end = ff_slice_pos(height, jobnr + 1, nb_jobs);

    const ptrdiff_t linesize = frame->linesize[0] / 2;

    const uint8_t roffset = s->rgba_map[R];

    const uint8_t goffset = s->rgba_map[G];

    const uint8_t boffset = s->rgba_map[B];

    uint16_t *ptr = (uint16_t *)frame->data[0] + slice_start * linesize;

    const float preserve = s->preserve;

    const float gm = s->gm * 0.5f;

    const float by = s->by * 0.5f;

    const float rc = s->rc * 0.5f;

    const float gmw = s->gmw;

    const float byw = s->byw;

    const float rcw = s->rcw;

    const float sum = gmw + byw + rcw;

    const float scale = 1.f / sum;


    for (int y = slice_start; y < slice_end && sum > FLT_EPSILON; y++) {

        for (int x = 0; x < width; x++) {

            float g = ptr[x * step + goffset];

            float b = ptr[x * step + boffset];

            float r = ptr[x * step + roffset];

            float g0, g1, g2;

            float b0, b1, b2;

            float r0, r1, r2;

            float gd, bd, rd;

            float gb, br, rg;

            float nr, ng, nb;

            float li, lo, lf;


            PROCESS(max);


            ptr[x * step + goffset] = av_clip_uintp2_c(ng, depth);

            ptr[x * step + boffset] = av_clip_uintp2_c(nb, depth);

            ptr[x * step + roffset] = av_clip_uintp2_c(nr, depth);

        }


        ptr += linesize;

    }


    return 0;

}


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

{

    AVFilterContext *ctx = link->dst;

    ColorContrastContext *s = ctx->priv;

    int res;


    if (res = ff_filter_execute(ctx, s->do_slice, frame, NULL,

                                FFMIN(frame->height, ff_filter_get_nb_threads(ctx))))

        return res;


    return ff_filter_frame(ctx->outputs[0], frame);

}


static const enum AVPixelFormat pixel_fmts[] = {

    AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,

    AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,

    AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,

    AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,

    AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,

    AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,

    AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12,

    AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,

    AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,

    AV_PIX_FMT_RGB48,  AV_PIX_FMT_BGR48,

    AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,

    AV_PIX_FMT_NONE

};


static av_cold int config_input(AVFilterLink *inlink)

{

    AVFilterContext *ctx = inlink->dst;

    ColorContrastContext *s = ctx->priv;

    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);

    int planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;


    s->step = desc->nb_components;

    if (inlink->format == AV_PIX_FMT_RGB0 ||

        inlink->format == AV_PIX_FMT_0RGB ||

        inlink->format == AV_PIX_FMT_BGR0 ||

        inlink->format == AV_PIX_FMT_0BGR)

        s->step = 4;


    s->depth = desc->comp[0].depth;

    s->do_slice = s->depth <= 8 ? colorcontrast_slice8 : colorcontrast_slice16;

    if (!planar)

        s->do_slice = s->depth <= 8 ? colorcontrast_slice8p : colorcontrast_slice16p;


    ff_fill_rgba_map(s->rgba_map, inlink->format);


    return 0;

}


static const AVFilterPad colorcontrast_inputs[] = {

    {

        .name           = "default",

        .type           = AVMEDIA_TYPE_VIDEO,

        .flags          = AVFILTERPAD_FLAG_NEEDS_WRITABLE,

        .filter_frame   = filter_frame,

        .config_props   = config_input,

    },

};


#define OFFSET(x) offsetof(ColorContrastContext, x)

#define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM


static const AVOption colorcontrast_options[] = {

    { "rc",  "set the red-cyan contrast",      OFFSET(rc),  AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, VF },

    { "gm",  "set the green-magenta contrast", OFFSET(gm),  AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, VF },

    { "by",  "set the blue-yellow contrast",   OFFSET(by),  AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, VF },

    { "rcw", "set the red-cyan weight",        OFFSET(rcw), AV_OPT_TYPE_FLOAT, {.dbl=0},  0, 1, VF },

    { "gmw", "set the green-magenta weight",   OFFSET(gmw), AV_OPT_TYPE_FLOAT, {.dbl=0},  0, 1, VF },

    { "byw", "set the blue-yellow weight",     OFFSET(byw), AV_OPT_TYPE_FLOAT, {.dbl=0},  0, 1, VF },

    { "pl",  "set the amount of preserving lightness", OFFSET(preserve), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, 1, VF },

    { NULL }

};


AVFILTER_DEFINE_CLASS(colorcontrast);


const FFFilter ff_vf_colorcontrast = {

    .p.name        = "colorcontrast",

    .p.description = NULL_IF_CONFIG_SMALL("Adjust color contrast between RGB components."),

    .p.priv_class  = &colorcontrast_class,

    .p.flags       = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,

    .priv_size     = sizeof(ColorContrastContext),

    FILTER_INPUTS(colorcontrast_inputs),

    FILTER_OUTPUTS(ff_video_default_filterpad),

    FILTER_PIXFMTS_ARRAY(pixel_fmts),

    .process_command = ff_filter_process_command,

};


config_input
static int config_input(AVFilterLink *inlink)
Definition af_acontrast.c:121

ff_vf_colorcontrast
const FFFilter ff_vf_colorcontrast
Definition vf_colorcontrast.c:377

ctx
static AVFormatContext * ctx
Definition api-movenc-test.c:49

ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition avfilter.c:1068

ff_filter_process_command
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
Definition avfilter.c:906

ff_filter_execute
int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition avfilter.c:1696

ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition avfilter.c:846

avfilter.h
Main libavfilter public API header.

f
#define f(width, name)
Definition cbs_vp8.c:236

s
#define s(width, name)
Definition cbs_vp9.c:198

av_clip_uintp2_c
static av_always_inline av_const unsigned av_clip_uintp2_c(int a, int p)
Clip a signed integer to an unsigned power of two range.
Definition common.h:280

av_clip_uint8
#define av_clip_uint8
Definition common.h:106

NULL
#define NULL
Definition coverity.c:32

max
#define max(a, b)
Definition cuda_runtime.h:33

frame
static AVFrame * frame
Definition demux_decode.c:54

filter_frame
static int filter_frame(DBEDecodeContext *s, AVFrame *frame)
Definition dolby_e.c:1067

ff_fill_rgba_map
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition drawutils.c:80

drawutils.h
misc drawing utilities

float.h

AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Underlying C type is float.
Definition opt.h:270

AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition avfilter.h:196

AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition avfilter.h:166

AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition avutil.h:200

B
#define B
Definition huffyuv.h:42

R
#define R
Definition huffyuv.h:44

G
#define G
Definition huffyuv.h:43

r
#define r
Definition input.c:42

b
#define b
Definition input.c:43

scale
static void scale(int *out, const int *in, const int w, const int h, const int shift)
Definition intra.c:278

arg
const char * arg
Definition jacosubdec.c:65

VF
#define VF
Definition af_afir.c:733

filters.h

FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition filters.h:264

FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition filters.h:265

ff_slice_pos
static int ff_slice_pos(int total, int jobnr, int nb_jobs)
Compute the boundary index for a slice when work of size total is split into nb_jobs slices.
Definition filters.h:763

AVFILTERPAD_FLAG_NEEDS_WRITABLE
#define AVFILTERPAD_FLAG_NEEDS_WRITABLE
The filter expects writable frames from its input link, duplicating data buffers if needed.
Definition filters.h:59

FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition filters.h:244

AVFILTER_DEFINE_CLASS
#define AVFILTER_DEFINE_CLASS(fname)
Definition filters.h:478

av_cold
#define av_cold
Definition attributes.h:117

NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition internal.h:88

desc
const char * desc
Definition libsvtav1.c:83

FFMIN
#define FFMIN(a, b)
Definition macros.h:49

slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict, int *got_output)
Handle slice ends.
Definition mpeg12dec.c:1697

opt.h
AVOptions.

av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition pixdesc.c:3460

pixdesc.h

AV_PIX_FMT_FLAG_PLANAR
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition pixdesc.h:132

AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition pixfmt.h:569

AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition pixfmt.h:571

AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition pixfmt.h:563

AV_PIX_FMT_BGR48
#define AV_PIX_FMT_BGR48
Definition pixfmt.h:536

AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition pixfmt.h:564

AV_PIX_FMT_RGBA64
#define AV_PIX_FMT_RGBA64
Definition pixfmt.h:535

AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition pixfmt.h:565

AV_PIX_FMT_RGB48
#define AV_PIX_FMT_RGB48
Definition pixfmt.h:531

AVPixelFormat
AVPixelFormat
Pixel format.
Definition pixfmt.h:71

AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition pixfmt.h:72

AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition pixfmt.h:75

AV_PIX_FMT_BGR0
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition pixfmt.h:265

AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition pixfmt.h:99

AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition pixfmt.h:102

AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition pixfmt.h:101

AV_PIX_FMT_0BGR
@ AV_PIX_FMT_0BGR
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition pixfmt.h:264

AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition pixfmt.h:100

AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition pixfmt.h:212

AV_PIX_FMT_RGB0
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition pixfmt.h:263

AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition pixfmt.h:76

AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition pixfmt.h:165

AV_PIX_FMT_0RGB
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition pixfmt.h:262

AV_PIX_FMT_BGRA64
#define AV_PIX_FMT_BGRA64
Definition pixfmt.h:540

AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition pixfmt.h:568

AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition pixfmt.h:567

AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition pixfmt.h:566

AVClass
Describe the class of an AVClass context structure.
Definition log.h:76

AVFilterContext
An instance of a filter.
Definition avfilter.h:273

AVFilterLink
A link between two filters.
Definition avfilter.h:367

AVFilterLink::dst
AVFilterContext * dst
dest filter
Definition avfilter.h:371

AVFilterLink::format
int format
agreed upon media format
Definition avfilter.h:376

AVFilterPad
A filter pad used for either input or output.
Definition filters.h:40

AVFrame
This structure describes decoded (raw) audio or video data.
Definition frame.h:472

AVOption
AVOption.
Definition opt.h:428

AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition pixdesc.h:69

ColorContrastContext
Definition vf_colorcontrast.c:34

ColorContrastContext::byw
float byw
Definition vf_colorcontrast.c:38

ColorContrastContext::rcw
float rcw
Definition vf_colorcontrast.c:38

ColorContrastContext::do_slice
int(* do_slice)(AVFilterContext *s, void *arg, int jobnr, int nb_jobs)
Definition vf_colorcontrast.c:45

ColorContrastContext::step
int step
Definition vf_colorcontrast.c:41

ColorContrastContext::gm
float gm
Definition vf_colorcontrast.c:37

ColorContrastContext::gmw
float gmw
Definition vf_colorcontrast.c:38

ColorContrastContext::by
float by
Definition vf_colorcontrast.c:37

ColorContrastContext::rc
float rc
Definition vf_colorcontrast.c:37

ColorContrastContext::depth
int depth
Definition vf_colorcontrast.c:42

ColorContrastContext::preserve
float preserve
Definition vf_colorcontrast.c:39

ColorContrastContext::rgba_map
uint8_t rgba_map[4]
Definition vf_colorcontrast.c:43

FFFilter
Definition filters.h:267

height
#define height
Definition dsp.h:89

width
#define width
Definition dsp.h:89

pixel_fmts
static enum AVPixelFormat pixel_fmts[]
Definition vf_amplify.c:52

colorcontrast_slice16p
static int colorcontrast_slice16p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition vf_colorcontrast.c:247

colorcontrast_inputs
static const AVFilterPad colorcontrast_inputs[]
Definition vf_colorcontrast.c:351

colorcontrast_options
static const AVOption colorcontrast_options[]
Definition vf_colorcontrast.c:364

colorcontrast_slice8
static int colorcontrast_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition vf_colorcontrast.c:91

config_input
static av_cold int config_input(AVFilterLink *inlink)
Definition vf_colorcontrast.c:327

filter_frame
static int filter_frame(AVFilterLink *link, AVFrame *frame)
Definition vf_colorcontrast.c:299

lerpf
static float lerpf(float v0, float v1, float f)
Definition vf_colorcontrast.c:49

PROCESS
#define PROCESS(max)
Definition vf_colorcontrast.c:54

OFFSET
#define OFFSET(x)
Definition vf_colorcontrast.c:361

colorcontrast_slice16
static int colorcontrast_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition vf_colorcontrast.c:143

colorcontrast_slice8p
static int colorcontrast_slice8p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition vf_colorcontrast.c:197

g
const char * g
Definition vf_curves.c:128

b1
static double b1(void *priv, double x, double y)
Definition vf_xfade.c:2034

b2
static double b2(void *priv, double x, double y)
Definition vf_xfade.c:2035

b0
static double b0(void *priv, double x, double y)
Definition vf_xfade.c:2033

ff_video_default_filterpad
const AVFilterPad ff_video_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_VIDEO.
Definition video.c:37

video.h

slice_start
static int slice_start(SliceContext *sc, VVCContext *s, VVCFrameContext *fc, const CodedBitstreamUnit *unit, const int is_first_slice)
Definition dec.c:844