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302 lines
16 KiB
302 lines
16 KiB
/* |
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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/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 "filters.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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float threshold_y; |
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float threshold_u; |
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float threshold_v; |
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int distance; |
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int thres; |
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int thres_y; |
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int thres_u; |
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int thres_v; |
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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 const enum AVPixelFormat pix_fmts[] = { |
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, 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_YUV440P10, 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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#define MANHATTAN_DISTANCE(x, y, z) ((x) + (y) + (z)) |
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#define EUCLIDEAN_DISTANCE(x, y, z) (sqrtf((x)*(x) + (y)*(y) + (z)*(z))) |
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#define FILTER_FUNC(distance, name, ctype, type, fun, extra) \ |
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static int distance ## _slice##name(AVFilterContext *ctx, void *arg, \ |
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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 thres_y = s->thres_y; \ |
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const int thres_u = s->thres_u; \ |
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const int thres_v = s->thres_v; \ |
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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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const int yystart = FFMAX(0, y - sizeh); \ |
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const int yystop = FFMIN(h - 1, y + sizeh); \ |
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\ |
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for (int x = 0; x < w; x++) { \ |
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const int xxstart = FFMAX(0, x - sizew); \ |
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const int xxstop = FFMIN(w - 1, x + sizew); \ |
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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 = yystart; yy <= yystop; 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 = xxstart; xx <= xxstop; xx += stepw) { \ |
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const ctype Y = in_yptr[xx * chroma_w]; \ |
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const ctype U = in_uptr[xx]; \ |
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const ctype V = in_vptr[xx]; \ |
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const ctype cyY = FFABS(cy - Y); \ |
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const ctype cuU = FFABS(cu - U); \ |
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const ctype cvV = FFABS(cv - V); \ |
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\ |
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if (extra && fun(cyY, cuU, cvV) < thres && \ |
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cuU < thres_u && cvV < thres_v && \ |
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cyY < thres_y) { \ |
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su += U; \ |
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sv += V; \ |
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cn++; \ |
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} else if (!extra && fun(cyY, cuU, cvV) < thres) { \ |
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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 >> 1)) / cn; \ |
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out_vptr[x] = (sv + (cn >> 1)) / 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(manhattan, 8, int, uint8_t, MANHATTAN_DISTANCE, 0) |
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FILTER_FUNC(manhattan, 16, int, uint16_t, MANHATTAN_DISTANCE, 0) |
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FILTER_FUNC(euclidean, 8, int, uint8_t, EUCLIDEAN_DISTANCE, 0) |
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FILTER_FUNC(euclidean, 16, int64_t, uint16_t, EUCLIDEAN_DISTANCE, 0) |
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FILTER_FUNC(manhattan_e, 8, int, uint8_t, MANHATTAN_DISTANCE, 1) |
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FILTER_FUNC(manhattan_e, 16, int, uint16_t, MANHATTAN_DISTANCE, 1) |
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FILTER_FUNC(euclidean_e, 8, int, uint8_t, EUCLIDEAN_DISTANCE, 1) |
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FILTER_FUNC(euclidean_e, 16, int64_t, uint16_t, EUCLIDEAN_DISTANCE, 1) |
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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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switch (s->distance) { |
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case 0: |
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s->filter_slice = s->depth <= 8 ? manhattan_slice8 : manhattan_slice16; |
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break; |
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case 1: |
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s->filter_slice = s->depth <= 8 ? euclidean_slice8 : euclidean_slice16; |
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break; |
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} |
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s->thres = s->threshold * (1 << (s->depth - 8)); |
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s->thres_y = s->threshold_y * (1 << (s->depth - 8)); |
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s->thres_u = s->threshold_u * (1 << (s->depth - 8)); |
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s->thres_v = s->threshold_v * (1 << (s->depth - 8)); |
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if (s->threshold_y < 200.f || s->threshold_u < 200.f || s->threshold_v < 200.f) { |
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switch (s->distance) { |
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case 0: |
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s->filter_slice = s->depth <= 8 ? manhattan_e_slice8 : manhattan_e_slice16; |
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break; |
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case 1: |
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s->filter_slice = s->depth <= 8 ? euclidean_e_slice8 : euclidean_e_slice16; |
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break; |
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} |
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} |
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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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ff_filter_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->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 y+u+v threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=30}, 1, 200, VF }, |
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{ "sizew", "set horizontal patch size", OFFSET(sizew), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF }, |
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{ "sizeh", "set vertical patch 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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{ "threy", "set y threshold", OFFSET(threshold_y), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF }, |
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{ "threu", "set u threshold", OFFSET(threshold_u), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF }, |
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{ "threv", "set v threshold", OFFSET(threshold_v), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF }, |
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{ "distance", "set distance type", OFFSET(distance), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, VF, .unit = "distance" }, |
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{ "manhattan", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, .unit = "distance" }, |
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{ "euclidean", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, VF, .unit = "distance" }, |
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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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}; |
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AVFILTER_DEFINE_CLASS(chromanr); |
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const 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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FILTER_OUTPUTS(ff_video_default_filterpad), |
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FILTER_INPUTS(inputs), |
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FILTER_PIXFMTS_ARRAY(pix_fmts), |
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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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};
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