GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/vf_blend.c Lines: 137 404 33.9 %
Date: 2021-01-27 11:56:10 Branches: 185 1316 14.1 %

Line Branch Exec Source
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/*
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 * Copyright (c) 2013 Paul B Mahol
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "libavutil/imgutils.h"
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#include "libavutil/intfloat.h"
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#include "libavutil/eval.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixfmt.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "framesync.h"
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#include "internal.h"
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#include "video.h"
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#include "blend.h"
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#define TOP    0
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#define BOTTOM 1
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typedef struct BlendContext {
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    const AVClass *class;
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    FFFrameSync fs;
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    int hsub, vsub;             ///< chroma subsampling values
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    int nb_planes;
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    char *all_expr;
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    enum BlendMode all_mode;
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    double all_opacity;
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    int depth;
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    FilterParams params[4];
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    int tblend;
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    AVFrame *prev_frame;        /* only used with tblend */
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} BlendContext;
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static const char *const var_names[] = {   "X",   "Y",   "W",   "H",   "SW",   "SH",   "T",   "N",   "A",   "B",   "TOP",   "BOTTOM",        NULL };
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enum                                   { VAR_X, VAR_Y, VAR_W, VAR_H, VAR_SW, VAR_SH, VAR_T, VAR_N, VAR_A, VAR_B, VAR_TOP, VAR_BOTTOM, VAR_VARS_NB };
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typedef struct ThreadData {
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    const AVFrame *top, *bottom;
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    AVFrame *dst;
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    AVFilterLink *inlink;
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    int plane;
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    int w, h;
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    FilterParams *param;
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} ThreadData;
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#define OFFSET(x) offsetof(BlendContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption blend_options[] = {
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    { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
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    { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
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    { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
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    { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
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    { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, "mode" },
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    { "addition",   "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION},   0, 0, FLAGS, "mode" },
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    { "addition128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },
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    { "grainmerge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },
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    { "and",        "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND},        0, 0, FLAGS, "mode" },
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    { "average",    "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE},    0, 0, FLAGS, "mode" },
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    { "burn",       "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN},       0, 0, FLAGS, "mode" },
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    { "darken",     "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN},     0, 0, FLAGS, "mode" },
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    { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, "mode" },
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    { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },
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    { "grainextract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },
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    { "divide",     "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE},     0, 0, FLAGS, "mode" },
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    { "dodge",      "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE},      0, 0, FLAGS, "mode" },
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    { "exclusion",  "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION},  0, 0, FLAGS, "mode" },
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    { "extremity",  "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY},  0, 0, FLAGS, "mode" },
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    { "freeze",     "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE},     0, 0, FLAGS, "mode" },
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    { "glow",       "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW},       0, 0, FLAGS, "mode" },
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    { "hardlight",  "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT},  0, 0, FLAGS, "mode" },
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    { "hardmix",    "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX},    0, 0, FLAGS, "mode" },
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    { "heat",       "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT},       0, 0, FLAGS, "mode" },
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    { "lighten",    "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN},    0, 0, FLAGS, "mode" },
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    { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, "mode" },
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    { "multiply",   "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY},   0, 0, FLAGS, "mode" },
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    { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, "mode" },
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    { "negation",   "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION},   0, 0, FLAGS, "mode" },
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    { "normal",     "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL},     0, 0, FLAGS, "mode" },
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    { "or",         "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR},         0, 0, FLAGS, "mode" },
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    { "overlay",    "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY},    0, 0, FLAGS, "mode" },
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    { "phoenix",    "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX},    0, 0, FLAGS, "mode" },
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    { "pinlight",   "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT},   0, 0, FLAGS, "mode" },
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    { "reflect",    "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT},    0, 0, FLAGS, "mode" },
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    { "screen",     "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN},     0, 0, FLAGS, "mode" },
103
    { "softlight",  "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT},  0, 0, FLAGS, "mode" },
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    { "subtract",   "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT},   0, 0, FLAGS, "mode" },
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    { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, "mode" },
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    { "xor",        "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR},        0, 0, FLAGS, "mode" },
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    { "c0_expr",  "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
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    { "c1_expr",  "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
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    { "c2_expr",  "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
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    { "c3_expr",  "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
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    { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
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    { "c0_opacity",  "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
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    { "c1_opacity",  "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
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    { "c2_opacity",  "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
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    { "c3_opacity",  "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
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    { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
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    { NULL }
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};
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FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs);
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#define COPY(src, depth)                                                            \
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static void blend_copy ## src##_##depth(const uint8_t *top, ptrdiff_t top_linesize,    \
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                            const uint8_t *bottom, ptrdiff_t bottom_linesize,\
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                            uint8_t *dst, ptrdiff_t dst_linesize,            \
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                            ptrdiff_t width, ptrdiff_t height,               \
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                            FilterParams *param, double *values, int starty) \
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{                                                                            \
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    av_image_copy_plane(dst, dst_linesize, src, src ## _linesize,            \
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                        width * depth / 8, height);                          \
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}
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COPY(top, 8)
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COPY(bottom, 8)
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COPY(top, 16)
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COPY(bottom, 16)
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COPY(top, 32)
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COPY(bottom, 32)
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#undef COPY
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static void blend_normal_8bit(const uint8_t *top, ptrdiff_t top_linesize,
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                              const uint8_t *bottom, ptrdiff_t bottom_linesize,
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                              uint8_t *dst, ptrdiff_t dst_linesize,
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                              ptrdiff_t width, ptrdiff_t height,
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                              FilterParams *param, double *values, int starty)
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{
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    const double opacity = param->opacity;
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    int i, j;
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    for (i = 0; i < height; i++) {
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        for (j = 0; j < width; j++) {
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            dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
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        }
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        dst    += dst_linesize;
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        top    += top_linesize;
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        bottom += bottom_linesize;
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    }
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}
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static void blend_normal_16bit(const uint8_t *_top, ptrdiff_t top_linesize,
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                                  const uint8_t *_bottom, ptrdiff_t bottom_linesize,
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                                  uint8_t *_dst, ptrdiff_t dst_linesize,
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                                  ptrdiff_t width, ptrdiff_t height,
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                                  FilterParams *param, double *values, int starty)
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{
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    const uint16_t *top = (uint16_t*)_top;
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    const uint16_t *bottom = (uint16_t*)_bottom;
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    uint16_t *dst = (uint16_t*)_dst;
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    const double opacity = param->opacity;
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    int i, j;
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    dst_linesize /= 2;
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    top_linesize /= 2;
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    bottom_linesize /= 2;
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    for (i = 0; i < height; i++) {
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        for (j = 0; j < width; j++) {
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            dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
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        }
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        dst    += dst_linesize;
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        top    += top_linesize;
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        bottom += bottom_linesize;
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    }
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}
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static void blend_normal_32bit(const uint8_t *_top, ptrdiff_t top_linesize,
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                               const uint8_t *_bottom, ptrdiff_t bottom_linesize,
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                               uint8_t *_dst, ptrdiff_t dst_linesize,
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                               ptrdiff_t width, ptrdiff_t height,
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                               FilterParams *param, double *values, int starty)
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{
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    const float *top = (float*)_top;
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    const float *bottom = (float*)_bottom;
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    float *dst = (float*)_dst;
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    const double opacity = param->opacity;
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    int i, j;
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    dst_linesize /= 4;
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    top_linesize /= 4;
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    bottom_linesize /= 4;
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    for (i = 0; i < height; i++) {
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        for (j = 0; j < width; j++) {
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            dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
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        }
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        dst    += dst_linesize;
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        top    += top_linesize;
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        bottom += bottom_linesize;
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    }
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}
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#define DEFINE_BLEND8(name, expr)                                              \
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static void blend_## name##_8bit(const uint8_t *top, ptrdiff_t top_linesize,         \
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                                 const uint8_t *bottom, ptrdiff_t bottom_linesize,   \
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                                 uint8_t *dst, ptrdiff_t dst_linesize,               \
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                                 ptrdiff_t width, ptrdiff_t height,                \
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                                 FilterParams *param, double *values, int starty) \
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{                                                                              \
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    double opacity = param->opacity;                                           \
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    int i, j;                                                                  \
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                                                                               \
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    for (i = 0; i < height; i++) {                                             \
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        for (j = 0; j < width; j++) {                                          \
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            dst[j] = top[j] + ((expr) - top[j]) * opacity;                     \
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        }                                                                      \
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        dst    += dst_linesize;                                                \
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        top    += top_linesize;                                                \
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        bottom += bottom_linesize;                                             \
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    }                                                                          \
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}
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#define DEFINE_BLEND16(name, expr, depth)                                            \
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static void blend_## name##_##depth##bit(const uint8_t *_top, ptrdiff_t top_linesize,\
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                                  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
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                                  uint8_t *_dst, ptrdiff_t dst_linesize,             \
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                                  ptrdiff_t width, ptrdiff_t height,           \
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                                  FilterParams *param, double *values, int starty)         \
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{                                                                              \
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    const uint16_t *top = (const uint16_t*)_top;                               \
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    const uint16_t *bottom = (const uint16_t*)_bottom;                         \
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    uint16_t *dst = (uint16_t*)_dst;                                           \
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    double opacity = param->opacity;                                           \
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    int i, j;                                                                  \
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    dst_linesize /= 2;                                                         \
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    top_linesize /= 2;                                                         \
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    bottom_linesize /= 2;                                                      \
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                                                                               \
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    for (i = 0; i < height; i++) {                                             \
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        for (j = 0; j < width; j++) {                                          \
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            dst[j] = top[j] + ((expr) - top[j]) * opacity;                     \
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        }                                                                      \
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        dst    += dst_linesize;                                                \
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        top    += top_linesize;                                                \
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        bottom += bottom_linesize;                                             \
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    }                                                                          \
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}
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#define DEFINE_BLEND32(name, expr, depth)                                            \
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static void blend_## name##_##depth##bit(const uint8_t *_top, ptrdiff_t top_linesize,\
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                                  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
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                                  uint8_t *_dst, ptrdiff_t dst_linesize,             \
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                                  ptrdiff_t width, ptrdiff_t height,                 \
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                                  FilterParams *param, double *values, int starty)   \
265
{                                                                              \
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    const float *top = (const float*)_top;                                     \
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    const float *bottom = (const float*)_bottom;                               \
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    float *dst = (float*)_dst;                                                 \
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    double opacity = param->opacity;                                           \
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    int i, j;                                                                  \
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    dst_linesize /= 4;                                                         \
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    top_linesize /= 4;                                                         \
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    bottom_linesize /= 4;                                                      \
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                                                                               \
275
    for (i = 0; i < height; i++) {                                             \
276
        for (j = 0; j < width; j++) {                                          \
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            dst[j] = top[j] + ((expr) - top[j]) * opacity;                     \
278
        }                                                                      \
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        dst    += dst_linesize;                                                \
280
        top    += top_linesize;                                                \
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        bottom += bottom_linesize;                                             \
282
    }                                                                          \
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}
284
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#define A top[j]
286
#define B bottom[j]
287
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#define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 255))
289
#define SCREEN(x, a, b)   (255 - (x) * ((255 - (a)) * (255 - (b)) / 255))
290
#define BURN(a, b)        (((a) == 0) ? (a) : FFMAX(0, 255 - ((255 - (b)) << 8) / (a)))
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#define DODGE(a, b)       (((a) == 255) ? (a) : FFMIN(255, (((b) << 8) / (255 - (a)))))
292
293

394758
DEFINE_BLEND8(addition,   FFMIN(255, A + B))
294

394758
DEFINE_BLEND8(grainmerge, av_clip_uint8(A + B - 128))
295

394758
DEFINE_BLEND8(average,    (A + B) / 2)
296

394758
DEFINE_BLEND8(subtract,   FFMAX(0, A - B))
297

394758
DEFINE_BLEND8(multiply,   MULTIPLY(1, A, B))
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DEFINE_BLEND8(multiply128,av_clip_uint8((A - 128) * B / 32. + 128))
299

394758
DEFINE_BLEND8(negation,   255 - FFABS(255 - A - B))
300

394758
DEFINE_BLEND8(extremity,  FFABS(255 - A - B))
301

394758
DEFINE_BLEND8(difference, FFABS(A - B))
302

7875441
DEFINE_BLEND8(grainextract, av_clip_uint8(128 + A - B))
303

394758
DEFINE_BLEND8(screen,     SCREEN(1, A, B))
304
DEFINE_BLEND8(overlay,    (A < 128) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
305
DEFINE_BLEND8(hardlight,  (B < 128) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
306

394758
DEFINE_BLEND8(hardmix,    (A < (255 - B)) ? 0: 255)
307
DEFINE_BLEND8(heat,       (A == 0) ? 0 : 255 - FFMIN(((255 - B) * (255 - B)) / A, 255))
308
DEFINE_BLEND8(freeze,     (B == 0) ? 0 : 255 - FFMIN(((255 - A) * (255 - A)) / B, 255))
309

394758
DEFINE_BLEND8(darken,     FFMIN(A, B))
310

394758
DEFINE_BLEND8(lighten,    FFMAX(A, B))
311
DEFINE_BLEND8(divide,     av_clip_uint8(B == 0 ? 255 : 255 * A / B))
312
DEFINE_BLEND8(dodge,      DODGE(A, B))
313
DEFINE_BLEND8(burn,       BURN(A, B))
314
DEFINE_BLEND8(softlight,  (A > 127) ? B + (255 - B) * (A - 127.5) / 127.5 * (0.5 - fabs(B - 127.5) / 255): B - B * ((127.5 - A) / 127.5) * (0.5 - fabs(B - 127.5)/255))
315
DEFINE_BLEND8(exclusion,  A + B - 2 * A * B / 255)
316
DEFINE_BLEND8(pinlight,   (B < 128) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 128)))
317

394758
DEFINE_BLEND8(phoenix,    FFMIN(A, B) - FFMAX(A, B) + 255)
318
DEFINE_BLEND8(reflect,    (B == 255) ? B : FFMIN(255, (A * A / (255 - B))))
319
DEFINE_BLEND8(glow,       (A == 255) ? A : FFMIN(255, (B * B / (255 - A))))
320

394758
DEFINE_BLEND8(and,        A & B)
321

394758
DEFINE_BLEND8(or,         A | B)
322

394758
DEFINE_BLEND8(xor,        A ^ B)
323
DEFINE_BLEND8(vividlight, (A < 128) ? BURN(2 * A, B) : DODGE(2 * (A - 128), B))
324
DEFINE_BLEND8(linearlight,av_clip_uint8((B < 128) ? B + 2 * A - 255 : B + 2 * (A - 128)))
325
326
#undef MULTIPLY
327
#undef SCREEN
328
#undef BURN
329
#undef DODGE
330
331
#define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 65535))
332
#define SCREEN(x, a, b)   (65535 - (x) * ((65535 - (a)) * (65535 - (b)) / 65535))
333
#define BURN(a, b)        (((a) == 0) ? (a) : FFMAX(0, 65535 - ((65535 - (b)) << 16) / (a)))
334
#define DODGE(a, b)       (((a) == 65535) ? (a) : FFMIN(65535, (((b) << 16) / (65535 - (a)))))
335
336

198150
DEFINE_BLEND16(addition,   FFMIN(65535, A + B), 16)
337

198150
DEFINE_BLEND16(grainmerge, av_clip_uint16(A + B - 32768), 16)
338

198150
DEFINE_BLEND16(average,    (A + B) / 2, 16)
339

396300
DEFINE_BLEND16(subtract,   FFMAX(0, A - B), 16)
340
DEFINE_BLEND16(multiply,   MULTIPLY(1, A, B), 16)
341
DEFINE_BLEND16(multiply128, av_clip_uint16((A - 32768) * B / 8192. + 32768), 16)
342

198150
DEFINE_BLEND16(negation,   65535 - FFABS(65535 - A - B), 16)
343

198150
DEFINE_BLEND16(extremity,  FFABS(65535 - A - B), 16)
344

198150
DEFINE_BLEND16(difference, FFABS(A - B), 16)
345

198150
DEFINE_BLEND16(grainextract, av_clip_uint16(32768 + A - B), 16)
346
DEFINE_BLEND16(screen,     SCREEN(1, A, B), 16)
347
DEFINE_BLEND16(overlay,    (A < 32768) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 16)
348
DEFINE_BLEND16(hardlight,  (B < 32768) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 16)
349
DEFINE_BLEND16(hardmix,    (A < (65535 - B)) ? 0: 65535, 16)
350
DEFINE_BLEND16(heat,       (A == 0) ? 0 : 65535 - FFMIN(((65535 - B) * (65535 - B)) / A, 65535), 16)
351
DEFINE_BLEND16(freeze,     (B == 0) ? 0 : 65535 - FFMIN(((65535 - A) * (65535 - A)) / B, 65535), 16)
352

198150
DEFINE_BLEND16(darken,     FFMIN(A, B), 16)
353

198150
DEFINE_BLEND16(lighten,    FFMAX(A, B), 16)
354
DEFINE_BLEND16(divide,     av_clip_uint16(B == 0 ? 65535 : 65535 * A / B), 16)
355
DEFINE_BLEND16(dodge,      DODGE(A, B), 16)
356
DEFINE_BLEND16(burn,       BURN(A, B), 16)
357
DEFINE_BLEND16(softlight,  (A > 32767) ? B + (65535 - B) * (A - 32767.5) / 32767.5 * (0.5 - fabs(B - 32767.5) / 65535): B - B * ((32767.5 - A) / 32767.5) * (0.5 - fabs(B - 32767.5)/65535), 16)
358
DEFINE_BLEND16(exclusion,  A + B - 2 * A * B / 65535, 16)
359
DEFINE_BLEND16(pinlight,   (B < 32768) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 32768)), 16)
360

198150
DEFINE_BLEND16(phoenix,    FFMIN(A, B) - FFMAX(A, B) + 65535, 16)
361
DEFINE_BLEND16(reflect,    (B == 65535) ? B : FFMIN(65535, (A * A / (65535 - B))), 16)
362
DEFINE_BLEND16(glow,       (A == 65535) ? A : FFMIN(65535, (B * B / (65535 - A))), 16)
363

198150
DEFINE_BLEND16(and,        A & B, 16)
364

198150
DEFINE_BLEND16(or,         A | B, 16)
365
DEFINE_BLEND16(xor,        A ^ B, 16)
366
DEFINE_BLEND16(vividlight, (A < 32768) ? BURN(2 * A, B) : DODGE(2 * (A - 32768), B), 16)
367
DEFINE_BLEND16(linearlight,av_clip_uint16((B < 32768) ? B + 2 * A - 65535 : B + 2 * (A - 32768)), 16)
368
369
#undef MULTIPLY
370
#undef SCREEN
371
#undef BURN
372
#undef DODGE
373
374
#define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 1023))
375
#define SCREEN(x, a, b)   (1023 - (x) * ((1023 - (a)) * (1023 - (b)) / 1023))
376
#define BURN(a, b)        (((a) == 0) ? (a) : FFMAX(0, 1023 - ((1023 - (b)) << 10) / (a)))
377
#define DODGE(a, b)       (((a) == 1023) ? (a) : FFMIN(1023, (((b) << 10) / (1023 - (a)))))
378
379
DEFINE_BLEND16(addition,   FFMIN(1023, A + B), 10)
380
DEFINE_BLEND16(grainmerge, (int)av_clip_uintp2(A + B - 512, 10), 10)
381
DEFINE_BLEND16(average,    (A + B) / 2, 10)
382
DEFINE_BLEND16(subtract,   FFMAX(0, A - B), 10)
383
DEFINE_BLEND16(multiply,   MULTIPLY(1, A, B), 10)
384
DEFINE_BLEND16(multiply128, (int)av_clip_uintp2((A - 512) * B / 128. + 512, 10), 10)
385
DEFINE_BLEND16(negation,   1023 - FFABS(1023 - A - B), 10)
386
DEFINE_BLEND16(extremity,  FFABS(1023 - A - B), 10)
387
DEFINE_BLEND16(difference, FFABS(A - B), 10)
388
DEFINE_BLEND16(grainextract, (int)av_clip_uintp2(512 + A - B, 10), 10)
389
DEFINE_BLEND16(screen,     SCREEN(1, A, B), 10)
390
DEFINE_BLEND16(overlay,    (A < 512) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 10)
391
DEFINE_BLEND16(hardlight,  (B < 512) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 10)
392
DEFINE_BLEND16(hardmix,    (A < (1023 - B)) ? 0: 1023, 10)
393
DEFINE_BLEND16(heat,       (A == 0) ? 0 : 1023 - FFMIN(((1023 - B) * (1023 - B)) / A, 1023), 10)
394
DEFINE_BLEND16(freeze,     (B == 0) ? 0 : 1023 - FFMIN(((1023 - A) * (1023 - A)) / B, 1023), 10)
395
DEFINE_BLEND16(darken,     FFMIN(A, B), 10)
396
DEFINE_BLEND16(lighten,    FFMAX(A, B), 10)
397
DEFINE_BLEND16(divide,     (int)av_clip_uintp2(B == 0 ? 1023 : 1023 * A / B, 10), 10)
398
DEFINE_BLEND16(dodge,      DODGE(A, B), 10)
399
DEFINE_BLEND16(burn,       BURN(A, B), 10)
400
DEFINE_BLEND16(softlight,  (A > 511) ? B + (1023 - B) * (A - 511.5) / 511.5 * (0.5 - fabs(B - 511.5) / 1023): B - B * ((511.5 - A) / 511.5) * (0.5 - fabs(B - 511.5)/1023), 10)
401
DEFINE_BLEND16(exclusion,  A + B - 2 * A * B / 1023, 10)
402
DEFINE_BLEND16(pinlight,   (B < 512) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 512)), 10)
403
DEFINE_BLEND16(phoenix,    FFMIN(A, B) - FFMAX(A, B) + 1023, 10)
404
DEFINE_BLEND16(reflect,    (B == 1023) ? B : FFMIN(1023, (A * A / (1023 - B))), 10)
405
DEFINE_BLEND16(glow,       (A == 1023) ? A : FFMIN(1023, (B * B / (1023 - A))), 10)
406
DEFINE_BLEND16(and,        A & B, 10)
407
DEFINE_BLEND16(or,         A | B, 10)
408
DEFINE_BLEND16(xor,        A ^ B, 10)
409
DEFINE_BLEND16(vividlight, (A < 512) ? BURN(2 * A, B) : DODGE(2 * (A - 512), B), 10)
410
DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 512) ? B + 2 * A - 1023 : B + 2 * (A - 512), 10), 10)
411
412
#undef MULTIPLY
413
#undef SCREEN
414
#undef BURN
415
#undef DODGE
416
417
#define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 4095))
418
#define SCREEN(x, a, b)   (4095 - (x) * ((4095 - (a)) * (4095 - (b)) / 4095))
419
#define BURN(a, b)        (((a) == 0) ? (a) : FFMAX(0, 4095 - ((4095 - (b)) << 12) / (a)))
420
#define DODGE(a, b)       (((a) == 4095) ? (a) : FFMIN(4095, (((b) << 12) / (4095 - (a)))))
421
422
DEFINE_BLEND16(addition,   FFMIN(4095, A + B), 12)
423
DEFINE_BLEND16(grainmerge, (int)av_clip_uintp2(A + B - 2048, 12), 12)
424
DEFINE_BLEND16(average,    (A + B) / 2, 12)
425
DEFINE_BLEND16(subtract,   FFMAX(0, A - B), 12)
426
DEFINE_BLEND16(multiply,   MULTIPLY(1, A, B), 12)
427
DEFINE_BLEND16(multiply128, (int)av_clip_uintp2((A - 2048) * B / 512. + 2048, 12), 12)
428
DEFINE_BLEND16(negation,   4095 - FFABS(4095 - A - B), 12)
429
DEFINE_BLEND16(extremity,  FFABS(4095 - A - B), 12)
430
DEFINE_BLEND16(difference, FFABS(A - B), 12)
431
DEFINE_BLEND16(grainextract, (int)av_clip_uintp2(2048 + A - B, 12), 12)
432
DEFINE_BLEND16(screen,     SCREEN(1, A, B), 12)
433
DEFINE_BLEND16(overlay,    (A < 2048) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 12)
434
DEFINE_BLEND16(hardlight,  (B < 2048) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 12)
435
DEFINE_BLEND16(hardmix,    (A < (4095 - B)) ? 0: 4095, 12)
436
DEFINE_BLEND16(heat,       (A == 0) ? 0 : 4095 - FFMIN(((4095 - B) * (4095 - B)) / A, 4095), 12)
437
DEFINE_BLEND16(freeze,     (B == 0) ? 0 : 4095 - FFMIN(((4095 - A) * (4095 - A)) / B, 4095), 12)
438
DEFINE_BLEND16(darken,     FFMIN(A, B), 12)
439
DEFINE_BLEND16(lighten,    FFMAX(A, B), 12)
440
DEFINE_BLEND16(divide,     (int)av_clip_uintp2(B == 0 ? 4095 : 4095 * A / B, 12), 12)
441
DEFINE_BLEND16(dodge,      DODGE(A, B), 12)
442
DEFINE_BLEND16(burn,       BURN(A, B), 12)
443
DEFINE_BLEND16(softlight,  (A > 2047) ? B + (4095 - B) * (A - 2047.5) / 2047.5 * (0.5 - fabs(B - 2047.5) / 4095): B - B * ((2047.5 - A) / 2047.5) * (0.5 - fabs(B - 2047.5)/4095), 12)
444
DEFINE_BLEND16(exclusion,  A + B - 2 * A * B / 4095, 12)
445
DEFINE_BLEND16(pinlight,   (B < 2048) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 2048)), 12)
446
DEFINE_BLEND16(phoenix,    FFMIN(A, B) - FFMAX(A, B) + 4095, 12)
447
DEFINE_BLEND16(reflect,    (B == 4095) ? B : FFMIN(4095, (A * A / (4095 - B))), 12)
448
DEFINE_BLEND16(glow,       (A == 4095) ? A : FFMIN(4095, (B * B / (4095 - A))), 12)
449
DEFINE_BLEND16(and,        A & B, 12)
450
DEFINE_BLEND16(or,         A | B, 12)
451
DEFINE_BLEND16(xor,        A ^ B, 12)
452
DEFINE_BLEND16(vividlight, (A < 2048) ? BURN(2 * A, B) : DODGE(2 * (A - 2048), B), 12)
453
DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 2048) ? B + 2 * A - 4095 : B + 2 * (A - 2048), 12), 12)
454
455
#undef MULTIPLY
456
#undef SCREEN
457
#undef BURN
458
#undef DODGE
459
460
#define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 511))
461
#define SCREEN(x, a, b)   (511 - (x) * ((511 - (a)) * (511 - (b)) / 511))
462
#define BURN(a, b)        (((a) == 0) ? (a) : FFMAX(0, 511 - ((511 - (b)) << 9) / (a)))
463
#define DODGE(a, b)       (((a) == 511) ? (a) : FFMIN(511, (((b) << 9) / (511 - (a)))))
464
465
DEFINE_BLEND16(addition,   FFMIN(511, A + B), 9)
466
DEFINE_BLEND16(grainmerge, (int)av_clip_uintp2(A + B - 256, 9), 9)
467
DEFINE_BLEND16(average,    (A + B) / 2, 9)
468
DEFINE_BLEND16(subtract,   FFMAX(0, A - B), 9)
469
DEFINE_BLEND16(multiply,   MULTIPLY(1, A, B), 9)
470
DEFINE_BLEND16(multiply128, (int)av_clip_uintp2((A - 256) * B / 64. + 256, 9), 9)
471
DEFINE_BLEND16(negation,   511 - FFABS(511 - A - B), 9)
472
DEFINE_BLEND16(extremity,  FFABS(511 - A - B), 9)
473
DEFINE_BLEND16(difference, FFABS(A - B), 9)
474
DEFINE_BLEND16(grainextract, (int)av_clip_uintp2(256 + A - B, 9), 9)
475
DEFINE_BLEND16(screen,     SCREEN(1, A, B), 9)
476
DEFINE_BLEND16(overlay,    (A < 256) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 9)
477
DEFINE_BLEND16(hardlight,  (B < 256) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 9)
478
DEFINE_BLEND16(hardmix,    (A < (511 - B)) ? 0: 511, 9)
479
DEFINE_BLEND16(heat,       (A == 0) ? 0 : 511 - FFMIN(((511 - B) * (511 - B)) / A, 511), 9)
480
DEFINE_BLEND16(freeze,     (B == 0) ? 0 : 511 - FFMIN(((511 - A) * (511 - A)) / B, 511), 9)
481
DEFINE_BLEND16(darken,     FFMIN(A, B), 9)
482
DEFINE_BLEND16(lighten,    FFMAX(A, B), 9)
483
DEFINE_BLEND16(divide,     (int)av_clip_uintp2(B == 0 ? 511 : 511 * A / B, 9), 9)
484
DEFINE_BLEND16(dodge,      DODGE(A, B), 9)
485
DEFINE_BLEND16(burn,       BURN(A, B), 9)
486
DEFINE_BLEND16(softlight,  (A > 511) ? B + (511 - B) * (A - 511.5) / 511.5 * (0.5 - fabs(B - 511.5) / 511): B - B * ((511.5 - A) / 511.5) * (0.5 - fabs(B - 511.5)/511), 9)
487
DEFINE_BLEND16(exclusion,  A + B - 2 * A * B / 511, 9)
488
DEFINE_BLEND16(pinlight,   (B < 256) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 256)), 9)
489
DEFINE_BLEND16(phoenix,    FFMIN(A, B) - FFMAX(A, B) + 511, 9)
490
DEFINE_BLEND16(reflect,    (B == 511) ? B : FFMIN(511, (A * A / (511 - B))), 9)
491
DEFINE_BLEND16(glow,       (A == 511) ? A : FFMIN(511, (B * B / (511 - A))), 9)
492
DEFINE_BLEND16(and,        A & B, 9)
493
DEFINE_BLEND16(or,         A | B, 9)
494
DEFINE_BLEND16(xor,        A ^ B, 9)
495
DEFINE_BLEND16(vividlight, (A < 256) ? BURN(2 * A, B) : DODGE(2 * (A - 256), B), 9)
496
DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 256) ? B + 2 * A - 511 : B + 2 * (A - 256), 9), 9)
497
498
#undef MULTIPLY
499
#undef SCREEN
500
#undef BURN
501
#undef DODGE
502
503
#define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 1.0))
504
#define SCREEN(x, a, b)   (1.0 - (x) * ((1.0 - (a)) * (1.0 - (b)) / 1.0))
505
#define BURN(a, b)        (((a) <= 0.0) ? (a) : FFMAX(0.0, 1.0 - (1.0 - (b)) / (a)))
506
#define DODGE(a, b)       (((a) >= 1.0) ? (a) : FFMIN(1.0, ((b) / (1.0 - (a)))))
507
508
DEFINE_BLEND32(addition,   A + B, 32)
509
DEFINE_BLEND32(grainmerge, A + B - 0.5, 32)
510
DEFINE_BLEND32(average,    (A + B) / 2, 32)
511
DEFINE_BLEND32(subtract,   A - B, 32)
512
DEFINE_BLEND32(multiply,   A * B, 32)
513
DEFINE_BLEND32(multiply128, (A - 0.5) * B / 0.125 + 0.5, 32)
514
DEFINE_BLEND32(negation,   1.0 - FFABS(1.0 - A - B), 32)
515
DEFINE_BLEND32(extremity,  FFABS(1.0 - A - B), 32)
516
DEFINE_BLEND32(difference, FFABS(A - B), 32)
517
DEFINE_BLEND32(grainextract, 0.5 + A - B, 32)
518
DEFINE_BLEND32(screen,     SCREEN(1, A, B), 32)
519
DEFINE_BLEND32(overlay,    (A < 0.5) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 32)
520
DEFINE_BLEND32(hardlight,  (B < 0.5) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 32)
521
DEFINE_BLEND32(hardmix,    (A < (1.0 - B)) ? 0: 1.0, 32)
522
DEFINE_BLEND32(heat,       (A == 0) ? 0 : 1.0 - FFMIN(((1.0 - B) * (1.0 - B)) / A, 1.0), 32)
523
DEFINE_BLEND32(freeze,     (B == 0) ? 0 : 1.0 - FFMIN(((1.0 - A) * (1.0 - A)) / B, 1.0), 32)
524
DEFINE_BLEND32(darken,     FFMIN(A, B), 32)
525
DEFINE_BLEND32(lighten,    FFMAX(A, B), 32)
526
DEFINE_BLEND32(divide,     B == 0 ? 1.0 : 1.0 * A / B, 32)
527
DEFINE_BLEND32(dodge,      DODGE(A, B), 32)
528
DEFINE_BLEND32(burn,       BURN(A, B), 32)
529
DEFINE_BLEND32(softlight,  (A > 0.5) ? B + (1.0 - B) * (A - 0.5) / 0.5 * (0.5 - fabs(B - 0.5) / 1.0): B - B * ((0.5 - A) / 0.5) * (0.5 - fabs(B - 0.5)/1.0), 32)
530
DEFINE_BLEND32(exclusion,  A + B - 2 * A * B / 1.0, 32)
531
DEFINE_BLEND32(pinlight,   (B < 0.5) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 0.5)), 32)
532
DEFINE_BLEND32(phoenix,    FFMIN(A, B) - FFMAX(A, B) + 1.0, 32)
533
DEFINE_BLEND32(reflect,    (B == 1.0) ? B : FFMIN(1.0, (A * A / (1.0 - B))), 32)
534
DEFINE_BLEND32(glow,       (A == 1.0) ? A : FFMIN(1.0, (B * B / (1.0 - A))), 32)
535
DEFINE_BLEND32(and,        av_int2float(av_float2int(A) & av_float2int(B)), 32)
536
DEFINE_BLEND32(or,         av_int2float(av_float2int(A) | av_float2int(B)), 32)
537
DEFINE_BLEND32(xor,        av_int2float(av_float2int(A) ^ av_float2int(B)), 32)
538
DEFINE_BLEND32(vividlight, (A < 0.5) ? BURN(2 * A, B) : DODGE(2 * (A - 0.5), B), 32)
539
DEFINE_BLEND32(linearlight,(B < 0.5) ? B + 2 * A - 1.0 : B + 2 * (A - 0.5), 32)
540
541
#define DEFINE_BLEND_EXPR(type, name, div)                                     \
542
static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize,          \
543
                               const uint8_t *_bottom, ptrdiff_t bottom_linesize,    \
544
                               uint8_t *_dst, ptrdiff_t dst_linesize,                \
545
                               ptrdiff_t width, ptrdiff_t height,              \
546
                               FilterParams *param, double *values, int starty) \
547
{                                                                              \
548
    const type *top = (type*)_top;                                             \
549
    const type *bottom = (type*)_bottom;                                       \
550
    type *dst = (type*)_dst;                                                   \
551
    AVExpr *e = param->e;                                                      \
552
    int y, x;                                                                  \
553
    dst_linesize /= div;                                                       \
554
    top_linesize /= div;                                                       \
555
    bottom_linesize /= div;                                                    \
556
                                                                               \
557
    for (y = 0; y < height; y++) {                                             \
558
        values[VAR_Y] = y + starty;                                            \
559
        for (x = 0; x < width; x++) {                                          \
560
            values[VAR_X]      = x;                                            \
561
            values[VAR_TOP]    = values[VAR_A] = top[x];                       \
562
            values[VAR_BOTTOM] = values[VAR_B] = bottom[x];                    \
563
            dst[x] = av_expr_eval(e, values, NULL);                            \
564
        }                                                                      \
565
        dst    += dst_linesize;                                                \
566
        top    += top_linesize;                                                \
567
        bottom += bottom_linesize;                                             \
568
    }                                                                          \
569
}
570
571
DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
572
DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
573
DEFINE_BLEND_EXPR(float, 32bit, 4)
574
575
1323
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
576
{
577
1323
    ThreadData *td = arg;
578
1323
    int slice_start = (td->h *  jobnr   ) / nb_jobs;
579
1323
    int slice_end   = (td->h * (jobnr+1)) / nb_jobs;
580
1323
    int height      = slice_end - slice_start;
581
1323
    const uint8_t *top    = td->top->data[td->plane];
582
1323
    const uint8_t *bottom = td->bottom->data[td->plane];
583
1323
    uint8_t *dst    = td->dst->data[td->plane];
584
    double values[VAR_VARS_NB];
585
586
1323
    values[VAR_N]  = td->inlink->frame_count_out;
587
1323
    values[VAR_T]  = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
588
1323
    values[VAR_W]  = td->w;
589
1323
    values[VAR_H]  = td->h;
590
1323
    values[VAR_SW] = td->w / (double)td->dst->width;
591
1323
    values[VAR_SH] = td->h / (double)td->dst->height;
592
593
1323
    td->param->blend(top + slice_start * td->top->linesize[td->plane],
594
1323
                     td->top->linesize[td->plane],
595
1323
                     bottom + slice_start * td->bottom->linesize[td->plane],
596
1323
                     td->bottom->linesize[td->plane],
597
1323
                     dst + slice_start * td->dst->linesize[td->plane],
598
1323
                     td->dst->linesize[td->plane],
599
1323
                     td->w, height, td->param, &values[0], slice_start);
600
1323
    return 0;
601
}
602
603
49
static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
604
                            const AVFrame *bottom_buf)
605
{
606
49
    BlendContext *s = ctx->priv;
607
49
    AVFilterLink *inlink = ctx->inputs[0];
608
49
    AVFilterLink *outlink = ctx->outputs[0];
609
    AVFrame *dst_buf;
610
    int plane;
611
612
49
    dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
613
49
    if (!dst_buf)
614
        return top_buf;
615
49
    av_frame_copy_props(dst_buf, top_buf);
616
617
196
    for (plane = 0; plane < s->nb_planes; plane++) {
618

147
        int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
619

147
        int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
620
147
        int outw = AV_CEIL_RSHIFT(dst_buf->width,  hsub);
621
147
        int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
622
147
        FilterParams *param = &s->params[plane];
623
147
        ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
624
                          .w = outw, .h = outh, .param = param, .plane = plane,
625
                          .inlink = inlink };
626
627
147
        ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outh, ff_filter_get_nb_threads(ctx)));
628
    }
629
630
49
    if (!s->tblend)
631
        av_frame_free(&top_buf);
632
633
49
    return dst_buf;
634
}
635
636
static int blend_frame_for_dualinput(FFFrameSync *fs)
637
{
638
    AVFilterContext *ctx = fs->parent;
639
    AVFrame *top_buf, *bottom_buf, *dst_buf;
640
    int ret;
641
642
    ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
643
    if (ret < 0)
644
        return ret;
645
    if (!bottom_buf)
646
        return ff_filter_frame(ctx->outputs[0], top_buf);
647
    dst_buf = blend_frame(ctx, top_buf, bottom_buf);
648
    return ff_filter_frame(ctx->outputs[0], dst_buf);
649
}
650
651
1
static av_cold int init(AVFilterContext *ctx)
652
{
653
1
    BlendContext *s = ctx->priv;
654
655
1
    s->tblend = !strcmp(ctx->filter->name, "tblend");
656
657
1
    s->fs.on_event = blend_frame_for_dualinput;
658
1
    return 0;
659
}
660
661
1
static int query_formats(AVFilterContext *ctx)
662
{
663
    static const enum AVPixelFormat pix_fmts[] = {
664
        AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
665
        AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
666
        AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
667
        AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8,
668
        AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
669
        AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_GBRP9,
670
        AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV440P10,
671
        AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
672
        AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GRAY10,
673
        AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
674
        AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
675
        AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GRAY12,
676
        AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
677
        AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
678
        AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
679
        AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32, AV_PIX_FMT_GRAYF32,
680
        AV_PIX_FMT_NONE
681
    };
682
683
1
    AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
684
1
    if (!fmts_list)
685
        return AVERROR(ENOMEM);
686
1
    return ff_set_common_formats(ctx, fmts_list);
687
}
688
689
1
static av_cold void uninit(AVFilterContext *ctx)
690
{
691
1
    BlendContext *s = ctx->priv;
692
    int i;
693
694
1
    ff_framesync_uninit(&s->fs);
695
1
    av_frame_free(&s->prev_frame);
696
697
5
    for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
698
4
        av_expr_free(s->params[i].e);
699
1
}
700
701
#define DEFINE_INIT_BLEND_FUNC(depth, nbits)                                          \
702
static av_cold void init_blend_func_##depth##_##nbits##bit(FilterParams *param)       \
703
{                                                                                     \
704
    switch (param->mode) {                                                            \
705
    case BLEND_ADDITION:     param->blend = blend_addition_##depth##bit;     break;   \
706
    case BLEND_GRAINMERGE:   param->blend = blend_grainmerge_##depth##bit;   break;   \
707
    case BLEND_AND:          param->blend = blend_and_##depth##bit;          break;   \
708
    case BLEND_AVERAGE:      param->blend = blend_average_##depth##bit;      break;   \
709
    case BLEND_BURN:         param->blend = blend_burn_##depth##bit;         break;   \
710
    case BLEND_DARKEN:       param->blend = blend_darken_##depth##bit;       break;   \
711
    case BLEND_DIFFERENCE:   param->blend = blend_difference_##depth##bit;   break;   \
712
    case BLEND_GRAINEXTRACT: param->blend = blend_grainextract_##depth##bit; break;   \
713
    case BLEND_DIVIDE:       param->blend = blend_divide_##depth##bit;       break;   \
714
    case BLEND_DODGE:        param->blend = blend_dodge_##depth##bit;        break;   \
715
    case BLEND_EXCLUSION:    param->blend = blend_exclusion_##depth##bit;    break;   \
716
    case BLEND_EXTREMITY:    param->blend = blend_extremity_##depth##bit;    break;   \
717
    case BLEND_FREEZE:       param->blend = blend_freeze_##depth##bit;       break;   \
718
    case BLEND_GLOW:         param->blend = blend_glow_##depth##bit;         break;   \
719
    case BLEND_HARDLIGHT:    param->blend = blend_hardlight_##depth##bit;    break;   \
720
    case BLEND_HARDMIX:      param->blend = blend_hardmix_##depth##bit;      break;   \
721
    case BLEND_HEAT:         param->blend = blend_heat_##depth##bit;         break;   \
722
    case BLEND_LIGHTEN:      param->blend = blend_lighten_##depth##bit;      break;   \
723
    case BLEND_LINEARLIGHT:  param->blend = blend_linearlight_##depth##bit;  break;   \
724
    case BLEND_MULTIPLY:     param->blend = blend_multiply_##depth##bit;     break;   \
725
    case BLEND_MULTIPLY128:  param->blend = blend_multiply128_##depth##bit;  break;   \
726
    case BLEND_NEGATION:     param->blend = blend_negation_##depth##bit;     break;   \
727
    case BLEND_NORMAL:       param->blend = blend_normal_##nbits##bit;       break;   \
728
    case BLEND_OR:           param->blend = blend_or_##depth##bit;           break;   \
729
    case BLEND_OVERLAY:      param->blend = blend_overlay_##depth##bit;      break;   \
730
    case BLEND_PHOENIX:      param->blend = blend_phoenix_##depth##bit;      break;   \
731
    case BLEND_PINLIGHT:     param->blend = blend_pinlight_##depth##bit;     break;   \
732
    case BLEND_REFLECT:      param->blend = blend_reflect_##depth##bit;      break;   \
733
    case BLEND_SCREEN:       param->blend = blend_screen_##depth##bit;       break;   \
734
    case BLEND_SOFTLIGHT:    param->blend = blend_softlight_##depth##bit;    break;   \
735
    case BLEND_SUBTRACT:     param->blend = blend_subtract_##depth##bit;     break;   \
736
    case BLEND_VIVIDLIGHT:   param->blend = blend_vividlight_##depth##bit;   break;   \
737
    case BLEND_XOR:          param->blend = blend_xor_##depth##bit;          break;   \
738
    }                                                                                 \
739
}
740








225
DEFINE_INIT_BLEND_FUNC(8, 8)
741
DEFINE_INIT_BLEND_FUNC(9, 16)
742
DEFINE_INIT_BLEND_FUNC(10, 16)
743
DEFINE_INIT_BLEND_FUNC(12, 16)
744








182
DEFINE_INIT_BLEND_FUNC(16, 16)
745
DEFINE_INIT_BLEND_FUNC(32, 32)
746
747
407
void ff_blend_init(FilterParams *param, int depth)
748
{
749

407
    switch (depth) {
750
225
    case 8:
751
225
        init_blend_func_8_8bit(param);
752
225
        break;
753
    case 9:
754
        init_blend_func_9_16bit(param);
755
        break;
756
    case 10:
757
        init_blend_func_10_16bit(param);
758
        break;
759
    case 12:
760
        init_blend_func_12_16bit(param);
761
        break;
762
182
    case 16:
763
182
        init_blend_func_16_16bit(param);
764
182
        break;
765
    case 32:
766
        init_blend_func_32_32bit(param);
767
        break;
768
    }
769
770

407
    if (param->opacity == 0 && param->mode != BLEND_NORMAL) {
771
        param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
772
407
    } else if (param->mode == BLEND_NORMAL) {
773
        if (param->opacity == 1)
774
            param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
775
        else if (param->opacity == 0)
776
            param->blend = depth > 8 ? depth > 16 ? blend_copybottom_32 : blend_copybottom_16 : blend_copybottom_8;
777
    }
778
779
    if (ARCH_X86)
780
407
        ff_blend_init_x86(param, depth);
781
407
}
782
783
1
static int config_output(AVFilterLink *outlink)
784
{
785
1
    AVFilterContext *ctx = outlink->src;
786
1
    AVFilterLink *toplink = ctx->inputs[TOP];
787
1
    BlendContext *s = ctx->priv;
788
1
    const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
789
    int ret, plane;
790
791
1
    if (!s->tblend) {
792
        AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
793
794
        if (toplink->format != bottomlink->format) {
795
            av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
796
            return AVERROR(EINVAL);
797
        }
798
        if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
799
            av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
800
                   "(size %dx%d) do not match the corresponding "
801
                   "second input link %s parameters (size %dx%d)\n",
802
                   ctx->input_pads[TOP].name, toplink->w, toplink->h,
803
                   ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h);
804
            return AVERROR(EINVAL);
805
        }
806
    }
807
808
1
    outlink->w = toplink->w;
809
1
    outlink->h = toplink->h;
810
1
    outlink->time_base = toplink->time_base;
811
1
    outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
812
1
    outlink->frame_rate = toplink->frame_rate;
813
814
1
    s->hsub = pix_desc->log2_chroma_w;
815
1
    s->vsub = pix_desc->log2_chroma_h;
816
817
1
    s->depth = pix_desc->comp[0].depth;
818
1
    s->nb_planes = av_pix_fmt_count_planes(toplink->format);
819
820
1
    if (!s->tblend)
821
        if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
822
            return ret;
823
824
5
    for (plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
825
4
        FilterParams *param = &s->params[plane];
826
827
4
        if (s->all_mode >= 0)
828
4
            param->mode = s->all_mode;
829
4
        if (s->all_opacity < 1)
830
            param->opacity = s->all_opacity;
831
832
4
        ff_blend_init(param, s->depth);
833
834

4
        if (s->all_expr && !param->expr_str) {
835
            param->expr_str = av_strdup(s->all_expr);
836
            if (!param->expr_str)
837
                return AVERROR(ENOMEM);
838
        }
839
4
        if (param->expr_str) {
840
            ret = av_expr_parse(&param->e, param->expr_str, var_names,
841
                                NULL, NULL, NULL, NULL, 0, ctx);
842
            if (ret < 0)
843
                return ret;
844
            param->blend = s->depth > 8 ? s->depth > 16 ? blend_expr_32bit : blend_expr_16bit : blend_expr_8bit;
845
        }
846
    }
847
848
1
    if (s->tblend)
849
1
        return 0;
850
851
    ret = ff_framesync_configure(&s->fs);
852
    outlink->time_base = s->fs.time_base;
853
854
    return ret;
855
}
856
857
#if CONFIG_BLEND_FILTER
858
859
static int activate(AVFilterContext *ctx)
860
{
861
    BlendContext *s = ctx->priv;
862
    return ff_framesync_activate(&s->fs);
863
}
864
865
static const AVFilterPad blend_inputs[] = {
866
    {
867
        .name          = "top",
868
        .type          = AVMEDIA_TYPE_VIDEO,
869
    },{
870
        .name          = "bottom",
871
        .type          = AVMEDIA_TYPE_VIDEO,
872
    },
873
    { NULL }
874
};
875
876
static const AVFilterPad blend_outputs[] = {
877
    {
878
        .name          = "default",
879
        .type          = AVMEDIA_TYPE_VIDEO,
880
        .config_props  = config_output,
881
    },
882
    { NULL }
883
};
884
885
AVFilter ff_vf_blend = {
886
    .name          = "blend",
887
    .description   = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
888
    .preinit       = blend_framesync_preinit,
889
    .init          = init,
890
    .uninit        = uninit,
891
    .priv_size     = sizeof(BlendContext),
892
    .query_formats = query_formats,
893
    .activate      = activate,
894
    .inputs        = blend_inputs,
895
    .outputs       = blend_outputs,
896
    .priv_class    = &blend_class,
897
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
898
};
899
900
#endif
901
902
#if CONFIG_TBLEND_FILTER
903
904
50
static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
905
{
906
50
    AVFilterContext *ctx = inlink->dst;
907
50
    BlendContext *s = ctx->priv;
908
50
    AVFilterLink *outlink = ctx->outputs[0];
909
910
50
    if (s->prev_frame) {
911
        AVFrame *out;
912
913
49
        if (ctx->is_disabled)
914
            out = av_frame_clone(frame);
915
        else
916
49
            out = blend_frame(ctx, frame, s->prev_frame);
917
49
        av_frame_free(&s->prev_frame);
918
49
        s->prev_frame = frame;
919
49
        return ff_filter_frame(outlink, out);
920
    }
921
1
    s->prev_frame = frame;
922
1
    return 0;
923
}
924
925
#define tblend_options blend_options
926
AVFILTER_DEFINE_CLASS(tblend);
927
928
static const AVFilterPad tblend_inputs[] = {
929
    {
930
        .name          = "default",
931
        .type          = AVMEDIA_TYPE_VIDEO,
932
        .filter_frame  = tblend_filter_frame,
933
    },
934
    { NULL }
935
};
936
937
static const AVFilterPad tblend_outputs[] = {
938
    {
939
        .name          = "default",
940
        .type          = AVMEDIA_TYPE_VIDEO,
941
        .config_props  = config_output,
942
    },
943
    { NULL }
944
};
945
946
AVFilter ff_vf_tblend = {
947
    .name          = "tblend",
948
    .description   = NULL_IF_CONFIG_SMALL("Blend successive frames."),
949
    .priv_size     = sizeof(BlendContext),
950
    .priv_class    = &tblend_class,
951
    .query_formats = query_formats,
952
    .init          = init,
953
    .uninit        = uninit,
954
    .inputs        = tblend_inputs,
955
    .outputs       = tblend_outputs,
956
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
957
};
958
959
#endif