GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/vf_chromanr.c Lines: 0 38 0.0 %
Date: 2020-10-23 17:01:47 Branches: 0 42 0.0 %

Line Branch Exec Source
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/*
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 * Copyright (c) 2020 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/avstring.h"
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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 ChromaNRContext {
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    const AVClass *class;
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    float threshold;
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    int thres;
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    int sizew;
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    int sizeh;
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    int stepw;
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    int steph;
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    int depth;
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    int chroma_w;
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    int chroma_h;
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    int nb_planes;
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    int linesize[4];
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    int planeheight[4];
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    int planewidth[4];
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    AVFrame *out;
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    int (*filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} ChromaNRContext;
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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_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
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        AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
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        AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
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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_YUV444P12,  AV_PIX_FMT_YUV422P12,  AV_PIX_FMT_YUV440P12, AV_PIX_FMT_YUV420P12,
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        AV_PIX_FMT_YUV444P14,  AV_PIX_FMT_YUV422P14,  AV_PIX_FMT_YUV420P14,
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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_YUVA422P12, AV_PIX_FMT_YUVA444P12,
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        AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
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        AV_PIX_FMT_NONE
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    };
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    AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
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    if (!fmts_list)
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        return AVERROR(ENOMEM);
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    return ff_set_common_formats(ctx, fmts_list);
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}
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#define FILTER_FUNC(name, type)                                                        \
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static int filter_slice##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)   \
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{                                                                                        \
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    ChromaNRContext *s = ctx->priv;                                                      \
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    AVFrame *in = arg;                                                                   \
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    AVFrame *out = s->out;                                                               \
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    const int in_ylinesize = in->linesize[0];                                            \
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    const int in_ulinesize = in->linesize[1];                                            \
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    const int in_vlinesize = in->linesize[2];                                            \
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    const int out_ulinesize = out->linesize[1];                                          \
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    const int out_vlinesize = out->linesize[2];                                          \
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    const int chroma_w = s->chroma_w;                                                    \
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    const int chroma_h = s->chroma_h;                                                    \
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    const int stepw = s->stepw;                                                          \
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    const int steph = s->steph;                                                          \
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    const int sizew = s->sizew;                                                          \
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    const int sizeh = s->sizeh;                                                          \
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    const int thres = s->thres;                                                          \
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    const int h = s->planeheight[1];                                                     \
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    const int w = s->planewidth[1];                                                      \
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    const int slice_start = (h * jobnr) / nb_jobs;                                       \
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    const int slice_end = (h * (jobnr+1)) / nb_jobs;                                     \
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    type *out_uptr = (type *)(out->data[1] + slice_start * out_ulinesize);               \
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    type *out_vptr = (type *)(out->data[2] + slice_start * out_vlinesize);               \
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                                                                                         \
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    {                                                                                    \
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        const int h = s->planeheight[0];                                                 \
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        const int slice_start = (h * jobnr) / nb_jobs;                                   \
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        const int slice_end = (h * (jobnr+1)) / nb_jobs;                                 \
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                                                                                         \
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        av_image_copy_plane(out->data[0] + slice_start * out->linesize[0],               \
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                            out->linesize[0],                                            \
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                            in->data[0] + slice_start * in->linesize[0],                 \
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                            in->linesize[0],                                             \
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                            s->linesize[0], slice_end - slice_start);                    \
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                                                                                         \
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        if (s->nb_planes == 4) {                                                         \
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            av_image_copy_plane(out->data[3] + slice_start * out->linesize[3],           \
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                                out->linesize[3],                                        \
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                                in->data[3] + slice_start * in->linesize[3],             \
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                                in->linesize[3],                                         \
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                                s->linesize[3], slice_end - slice_start);                \
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        }                                                                                \
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    }                                                                                    \
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                                                                                         \
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    for (int y = slice_start; y < slice_end; y++) {                                      \
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        const type *in_yptr = (const type *)(in->data[0] + y * chroma_h * in_ylinesize); \
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        const type *in_uptr = (const type *)(in->data[1] + y * in_ulinesize);            \
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        const type *in_vptr = (const type *)(in->data[2] + y * in_vlinesize);            \
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                                                                                         \
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        for (int x = 0; x < w; x++) {                                                    \
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            const int cy = in_yptr[x * chroma_w];                                        \
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            const int cu = in_uptr[x];                                                   \
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            const int cv = in_vptr[x];                                                   \
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            int su = cu;                                                                 \
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            int sv = cv;                                                                 \
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            int cn = 1;                                                                  \
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                                                                                         \
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            for (int yy = FFMAX(0, y - sizeh); yy < FFMIN(y + sizeh, h); yy += steph) {           \
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                const type *in_yptr = (const type *)(in->data[0] + yy * chroma_h * in_ylinesize); \
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                const type *in_uptr = (const type *)(in->data[1] + yy * in_ulinesize);            \
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                const type *in_vptr = (const type *)(in->data[2] + yy * in_vlinesize);            \
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                                                                                                  \
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                for (int xx = FFMAX(0, x - sizew); xx < FFMIN(x + sizew, w); xx += stepw) {       \
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                    const int Y = in_yptr[xx * chroma_w];                              \
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                    const int U = in_uptr[xx];                                         \
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                    const int V = in_vptr[xx];                                         \
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                                                                                       \
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                    if (FFABS(cu - U) + FFABS(cv - V) + FFABS(cy - Y) < thres &&       \
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                        xx != x && yy != y) {                                          \
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                        su += U;                                                       \
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                        sv += V;                                                       \
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                        cn++;                                                          \
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                    }                                                                  \
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                }                                                                      \
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            }                                                                          \
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                                                                                       \
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            out_uptr[x] = su / cn;                                                     \
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            out_vptr[x] = sv / cn;                                                     \
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        }                                                                              \
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                                                                                       \
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        out_uptr += out_ulinesize / sizeof(type);                                      \
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        out_vptr += out_vlinesize / sizeof(type);                                      \
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    }                                                                                  \
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                                                                                       \
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    return 0;                                                                          \
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}
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FILTER_FUNC(8,  uint8_t)
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FILTER_FUNC(16, uint16_t)
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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    AVFilterContext *ctx = inlink->dst;
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    AVFilterLink *outlink = ctx->outputs[0];
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    ChromaNRContext *s = ctx->priv;
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    AVFrame *out;
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    s->thres = s->threshold * (1 << (s->depth - 8));
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    out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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    if (!out) {
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        av_frame_free(&in);
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        return AVERROR(ENOMEM);
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    }
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    av_frame_copy_props(out, in);
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    s->out = out;
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    ctx->internal->execute(ctx, s->filter_slice, in, NULL,
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                           FFMIN3(s->planeheight[1],
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                                  s->planeheight[2],
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                                  ff_filter_get_nb_threads(ctx)));
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    av_frame_free(&in);
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    return ff_filter_frame(outlink, out);
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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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    ChromaNRContext *s = ctx->priv;
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    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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    int ret;
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    s->nb_planes = desc->nb_components;
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    s->depth = desc->comp[0].depth;
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    s->filter_slice = s->depth <= 8 ? filter_slice8 : filter_slice16;
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    s->chroma_w = 1 << desc->log2_chroma_w;
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    s->chroma_h = 1 << desc->log2_chroma_h;
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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->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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    if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
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        return ret;
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    return 0;
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}
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#define OFFSET(x) offsetof(ChromaNRContext, x)
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#define VF AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption chromanr_options[] = {
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    { "thres", "set u/v threshold",   OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=30}, 1, 200, VF },
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    { "sizew", "set horizontal size", OFFSET(sizew),     AV_OPT_TYPE_INT,   {.i64=5},  1, 100, VF },
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    { "sizeh", "set vertical size",   OFFSET(sizeh),     AV_OPT_TYPE_INT,   {.i64=5},  1, 100, VF },
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    { "stepw", "set horizontal step", OFFSET(stepw),     AV_OPT_TYPE_INT,   {.i64=1},  1,  50, VF },
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    { "steph", "set vertical step",   OFFSET(steph),     AV_OPT_TYPE_INT,   {.i64=1},  1,  50, VF },
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    { NULL }
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};
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static const AVFilterPad inputs[] = {
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    {
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        .name         = "default",
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        .type         = AVMEDIA_TYPE_VIDEO,
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        .filter_frame = filter_frame,
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        .config_props = config_input,
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    },
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    { NULL }
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};
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static const AVFilterPad outputs[] = {
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    {
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        .name = "default",
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        .type = AVMEDIA_TYPE_VIDEO,
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    },
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    { NULL }
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};
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AVFILTER_DEFINE_CLASS(chromanr);
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AVFilter ff_vf_chromanr = {
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    .name          = "chromanr",
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    .description   = NULL_IF_CONFIG_SMALL("Reduce chrominance noise."),
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    .priv_size     = sizeof(ChromaNRContext),
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    .priv_class    = &chromanr_class,
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    .query_formats = query_formats,
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    .outputs       = outputs,
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    .inputs        = inputs,
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    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
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    .process_command = ff_filter_process_command,
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};