GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/vf_bilateral.c Lines: 0 77 0.0 %
Date: 2021-01-20 23:14:43 Branches: 0 72 0.0 %

Line Branch Exec Source
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/*
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 * Copyright (c) 2017 Ming Yang
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 * Copyright (c) 2019 Paul B Mahol
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in all
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 * copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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 * SOFTWARE.
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 */
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#include "libavutil/imgutils.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
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typedef struct BilateralContext {
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    const AVClass *class;
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    float sigmaS;
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    float sigmaR;
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    int planes;
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    int nb_planes;
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    int depth;
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    int planewidth[4];
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    int planeheight[4];
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    float alpha;
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    float range_table[65536];
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    float *img_out_f;
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    float *img_temp;
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    float *map_factor_a;
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    float *map_factor_b;
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    float *slice_factor_a;
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    float *slice_factor_b;
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    float *line_factor_a;
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    float *line_factor_b;
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} BilateralContext;
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#define OFFSET(x) offsetof(BilateralContext, x)
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption bilateral_options[] = {
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    { "sigmaS", "set spatial sigma",    OFFSET(sigmaS), AV_OPT_TYPE_FLOAT, {.dbl=0.1}, 0.0, 512, FLAGS },
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    { "sigmaR", "set range sigma",      OFFSET(sigmaR), AV_OPT_TYPE_FLOAT, {.dbl=0.1}, 0.0,   1, FLAGS },
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    { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT,   {.i64=1},     0, 0xF, FLAGS },
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    { NULL }
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};
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AVFILTER_DEFINE_CLASS(bilateral);
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static int query_formats(AVFilterContext *ctx)
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{
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    static const enum AVPixelFormat pix_fmts[] = {
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        AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
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        AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
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        AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
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        AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
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        AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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        AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
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        AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
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        AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
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        AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
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        AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
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        AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
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        AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
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        AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
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        AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
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        AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
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        AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
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        AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
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        AV_PIX_FMT_NONE
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    };
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    return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
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}
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static int config_params(AVFilterContext *ctx)
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{
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    BilateralContext *s = ctx->priv;
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    float inv_sigma_range;
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    inv_sigma_range = 1.0f / (s->sigmaR * ((1 << s->depth) - 1));
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    s->alpha = expf(-sqrtf(2.f) / s->sigmaS);
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    //compute a lookup table
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    for (int i = 0; i < (1 << s->depth); i++)
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        s->range_table[i] = s->alpha * expf(-i * inv_sigma_range);
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    return 0;
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}
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static int config_input(AVFilterLink *inlink)
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{
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    AVFilterContext *ctx = inlink->dst;
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    BilateralContext *s = ctx->priv;
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    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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    s->depth = desc->comp[0].depth;
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    config_params(ctx);
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    s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
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    s->planewidth[0] = s->planewidth[3] = inlink->w;
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    s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
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    s->planeheight[0] = s->planeheight[3] = inlink->h;
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    s->nb_planes = av_pix_fmt_count_planes(inlink->format);
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    s->img_out_f = av_calloc(inlink->w * inlink->h, sizeof(float));
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    s->img_temp = av_calloc(inlink->w * inlink->h, sizeof(float));
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    s->map_factor_a = av_calloc(inlink->w * inlink->h, sizeof(float));
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    s->map_factor_b = av_calloc(inlink->w * inlink->h, sizeof(float));
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    s->slice_factor_a = av_calloc(inlink->w, sizeof(float));
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    s->slice_factor_b = av_calloc(inlink->w, sizeof(float));
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    s->line_factor_a = av_calloc(inlink->w, sizeof(float));
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    s->line_factor_b = av_calloc(inlink->w, sizeof(float));
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    if (!s->img_out_f ||
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        !s->img_temp ||
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        !s->map_factor_a ||
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        !s->map_factor_b ||
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        !s->slice_factor_a ||
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        !s->slice_factor_a ||
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        !s->line_factor_a ||
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        !s->line_factor_a)
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        return AVERROR(ENOMEM);
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    return 0;
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}
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#define BILATERAL(type, name)                                                           \
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static void bilateral_##name(BilateralContext *s, const uint8_t *ssrc, uint8_t *ddst,   \
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                             float sigma_spatial, float sigma_range,                    \
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                             int width, int height, int src_linesize, int dst_linesize) \
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{                                                                                       \
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    type *dst = (type *)ddst;                                                           \
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    const type *src = (const type *)ssrc;                                               \
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    float *img_out_f = s->img_out_f, *img_temp = s->img_temp;                           \
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    float *map_factor_a = s->map_factor_a, *map_factor_b = s->map_factor_b;             \
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    float *slice_factor_a = s->slice_factor_a, *slice_factor_b = s->slice_factor_b;     \
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    float *line_factor_a = s->line_factor_a, *line_factor_b = s->line_factor_b;         \
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    const float *range_table = s->range_table;                                          \
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    const float alpha = s->alpha;                                                       \
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    float ypr, ycr, *ycy, *ypy, *xcy, fp, fc;                                           \
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    const float inv_alpha_ = 1.f - alpha;                                               \
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    float *ycf, *ypf, *xcf, *in_factor;                                                 \
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    const type *tcy, *tpy;                                                                \
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    int h1;                                                                               \
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                                                                                          \
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    for (int y = 0; y < height; y++) {                                                    \
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        float *temp_factor_x, *temp_x = &img_temp[y * width];                             \
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        const type *in_x = &src[y * src_linesize];                                        \
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        const type *texture_x = &src[y * src_linesize];                                   \
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        type tpr;                                                                         \
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                                                                                          \
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        *temp_x++ = ypr = *in_x++;                                                        \
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        tpr = *texture_x++;                                                               \
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                                                                                          \
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        temp_factor_x = &map_factor_a[y * width];                                         \
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        *temp_factor_x++ = fp = 1;                                                        \
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                                                                                          \
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        for (int x = 1; x < width; x++) {                                                 \
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            float alpha_;                                                                 \
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            int range_dist;                                                               \
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            type tcr = *texture_x++;                                                      \
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            type dr = abs(tcr - tpr);                                                     \
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                                                                                          \
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            range_dist = dr;                                                              \
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            alpha_ = range_table[range_dist];                                             \
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            *temp_x++ = ycr = inv_alpha_*(*in_x++) + alpha_*ypr;                          \
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            tpr = tcr;                                                                    \
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            ypr = ycr;                                                                    \
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            *temp_factor_x++ = fc = inv_alpha_ + alpha_ * fp;                             \
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            fp = fc;                                                                      \
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        }                                                                                 \
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        --temp_x; *temp_x = 0.5f*((*temp_x) + (*--in_x));                                 \
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        tpr = *--texture_x;                                                               \
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        ypr = *in_x;                                                                      \
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                                                                                          \
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        --temp_factor_x; *temp_factor_x = 0.5f*((*temp_factor_x) + 1);                    \
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        fp = 1;                                                                           \
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                                                                                          \
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        for (int x = width - 2; x >= 0; x--) {                                            \
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            type tcr = *--texture_x;                                                      \
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            type dr = abs(tcr - tpr);                                                     \
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            int range_dist = dr;                                                          \
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            float alpha_ = range_table[range_dist];                                       \
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                                                                                          \
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            ycr = inv_alpha_ * (*--in_x) + alpha_ * ypr;                                  \
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            --temp_x; *temp_x = 0.5f*((*temp_x) + ycr);                                   \
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            tpr = tcr;                                                                    \
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            ypr = ycr;                                                                    \
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                                                                                          \
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            fc = inv_alpha_ + alpha_*fp;                                                  \
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            --temp_factor_x;                                                              \
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            *temp_factor_x = 0.5f*((*temp_factor_x) + fc);                                \
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            fp = fc;                                                                      \
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        }                                                                                 \
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    }                                                                                     \
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    memcpy(img_out_f, img_temp, sizeof(float) * width);                                   \
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                                                                                          \
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    in_factor = map_factor_a;                                                             \
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    memcpy(map_factor_b, in_factor, sizeof(float) * width);                               \
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    for (int y = 1; y < height; y++) {                                                    \
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        tpy = &src[(y - 1) * src_linesize];                                               \
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        tcy = &src[y * src_linesize];                                                     \
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        xcy = &img_temp[y * width];                                                       \
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        ypy = &img_out_f[(y - 1) * width];                                                \
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        ycy = &img_out_f[y * width];                                                      \
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                                                                                          \
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        xcf = &in_factor[y * width];                                                      \
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        ypf = &map_factor_b[(y - 1) * width];                                             \
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        ycf = &map_factor_b[y * width];                                                   \
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        for (int x = 0; x < width; x++) {                                                 \
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            type dr = abs((*tcy++) - (*tpy++));                                           \
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            int range_dist = dr;                                                          \
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            float alpha_ = range_table[range_dist];                                       \
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                                                                                          \
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            *ycy++ = inv_alpha_*(*xcy++) + alpha_*(*ypy++);                               \
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            *ycf++ = inv_alpha_*(*xcf++) + alpha_*(*ypf++);                               \
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        }                                                                                 \
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    }                                                                                     \
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    h1 = height - 1;                                                                      \
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    ycf = line_factor_a;                                                                  \
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    ypf = line_factor_b;                                                                  \
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    memcpy(ypf, &in_factor[h1 * width], sizeof(float) * width);                           \
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    for (int x = 0; x < width; x++)                                                       \
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        map_factor_b[h1 * width + x] = 0.5f*(map_factor_b[h1 * width + x] + ypf[x]);      \
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                                                                                          \
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    ycy = slice_factor_a;                                                                 \
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    ypy = slice_factor_b;                                                                 \
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    memcpy(ypy, &img_temp[h1 * width], sizeof(float) * width);                            \
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    for (int x = 0, k = 0; x < width; x++) {                                              \
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        int idx = h1 * width + x;                                                         \
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        img_out_f[idx] = 0.5f*(img_out_f[idx] + ypy[k++]) / map_factor_b[h1 * width + x]; \
254
    }                                                                                     \
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                                                                                          \
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    for (int y = h1 - 1; y >= 0; y--) {                                                   \
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        float *ycf_, *ypf_, *factor_;                                                     \
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        float *ycy_, *ypy_, *out_;                                                        \
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                                                                                          \
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        tpy = &src[(y + 1) * src_linesize];                                               \
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        tcy = &src[y * src_linesize];                                                     \
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        xcy = &img_temp[y * width];                                                       \
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        ycy_ = ycy;                                                                       \
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        ypy_ = ypy;                                                                       \
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        out_ = &img_out_f[y * width];                                                     \
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                                                                                          \
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        xcf = &in_factor[y * width];                                                      \
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        ycf_ = ycf;                                                                       \
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        ypf_ = ypf;                                                                       \
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        factor_ = &map_factor_b[y * width];                                               \
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        for (int x = 0; x < width; x++) {                                                 \
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            type dr = abs((*tcy++) - (*tpy++));                                           \
273
            int range_dist = dr;                                                          \
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            float alpha_ = range_table[range_dist];                                       \
275
            float ycc, fcc = inv_alpha_*(*xcf++) + alpha_*(*ypf_++);                      \
276
                                                                                          \
277
            *ycf_++ = fcc;                                                                \
278
            *factor_ = 0.5f * (*factor_ + fcc);                                           \
279
                                                                                          \
280
            ycc = inv_alpha_*(*xcy++) + alpha_*(*ypy_++);                                 \
281
            *ycy_++ = ycc;                                                                \
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            *out_ = 0.5f * (*out_ + ycc) / (*factor_);                                    \
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            out_++;                                                                       \
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            factor_++;                                                                    \
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        }                                                                                 \
286
                                                                                          \
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        ypy = ycy;                                                                        \
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        ypf = ycf;                                                                        \
289
    }                                                                                     \
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                                                                                          \
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    for (int i = 0; i < height; i++)                                                      \
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        for (int j = 0; j < width; j++)                                                   \
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            dst[j + i * dst_linesize] = img_out_f[i * width + j];                         \
294
}
295
296
BILATERAL(uint8_t, byte)
297
BILATERAL(uint16_t, word)
298
299
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
300
{
301
    AVFilterContext *ctx = inlink->dst;
302
    BilateralContext *s = ctx->priv;
303
    AVFilterLink *outlink = ctx->outputs[0];
304
    AVFrame *out;
305
306
    out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
307
    if (!out) {
308
        av_frame_free(&in);
309
        return AVERROR(ENOMEM);
310
    }
311
    av_frame_copy_props(out, in);
312
313
    for (int plane = 0; plane < s->nb_planes; plane++) {
314
        if (!(s->planes & (1 << plane))) {
315
            av_image_copy_plane(out->data[plane], out->linesize[plane],
316
                                in->data[plane], in->linesize[plane],
317
                                s->planewidth[plane] * ((s->depth + 7) / 8), s->planeheight[plane]);
318
            continue;
319
        }
320
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        if (s->depth <= 8)
322
           bilateral_byte(s, in->data[plane], out->data[plane], s->sigmaS, s->sigmaR,
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                      s->planewidth[plane], s->planeheight[plane],
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                      in->linesize[plane], out->linesize[plane]);
325
        else
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           bilateral_word(s, in->data[plane], out->data[plane], s->sigmaS, s->sigmaR,
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                      s->planewidth[plane], s->planeheight[plane],
328
                      in->linesize[plane] / 2, out->linesize[plane] / 2);
329
    }
330
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    av_frame_free(&in);
332
    return ff_filter_frame(outlink, out);
333
}
334
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static av_cold void uninit(AVFilterContext *ctx)
336
{
337
    BilateralContext *s = ctx->priv;
338
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    av_freep(&s->img_out_f);
340
    av_freep(&s->img_temp);
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    av_freep(&s->map_factor_a);
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    av_freep(&s->map_factor_b);
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    av_freep(&s->slice_factor_a);
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    av_freep(&s->slice_factor_b);
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    av_freep(&s->line_factor_a);
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    av_freep(&s->line_factor_b);
347
}
348
349
static int process_command(AVFilterContext *ctx,
350
                           const char *cmd,
351
                           const char *arg,
352
                           char *res,
353
                           int res_len,
354
                           int flags)
355
{
356
    int ret = ff_filter_process_command(ctx, cmd, arg, res, res_len, flags);
357
358
    if (ret < 0)
359
        return ret;
360
361
    return config_params(ctx);
362
}
363
364
static const AVFilterPad bilateral_inputs[] = {
365
    {
366
        .name         = "default",
367
        .type         = AVMEDIA_TYPE_VIDEO,
368
        .config_props = config_input,
369
        .filter_frame = filter_frame,
370
    },
371
    { NULL }
372
};
373
374
static const AVFilterPad bilateral_outputs[] = {
375
    {
376
        .name = "default",
377
        .type = AVMEDIA_TYPE_VIDEO,
378
    },
379
    { NULL }
380
};
381
382
AVFilter ff_vf_bilateral = {
383
    .name          = "bilateral",
384
    .description   = NULL_IF_CONFIG_SMALL("Apply Bilateral filter."),
385
    .priv_size     = sizeof(BilateralContext),
386
    .priv_class    = &bilateral_class,
387
    .uninit        = uninit,
388
    .query_formats = query_formats,
389
    .inputs        = bilateral_inputs,
390
    .outputs       = bilateral_outputs,
391
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
392
    .process_command = process_command,
393
};