/* * Copyright (c) 2020 Paul B Mahol * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "libavutil/avstring.h" #include "libavutil/imgutils.h" #include "libavutil/opt.h" #include "libavutil/pixdesc.h" #include "avfilter.h" #include "formats.h" #include "internal.h" #include "video.h" typedef struct ChromaNRContext { const AVClass *class; float threshold; float threshold_y; float threshold_u; float threshold_v; int distance; int thres; int thres_y; int thres_u; int thres_v; int sizew; int sizeh; int stepw; int steph; int depth; int chroma_w; int chroma_h; int nb_planes; int linesize[4]; int planeheight[4]; int planewidth[4]; AVFrame *out; int (*filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); } ChromaNRContext; static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV440P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV440P12, AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, AV_PIX_FMT_NONE }; #define MANHATTAN_DISTANCE(x, y, z) ((x) + (y) + (z)) #define EUCLIDEAN_DISTANCE(x, y, z) (sqrtf((x)*(x) + (y)*(y) + (z)*(z))) #define FILTER_FUNC(distance, name, ctype, type, fun, extra) \ static int distance ## _slice##name(AVFilterContext *ctx, void *arg, \ int jobnr, int nb_jobs) \ { \ ChromaNRContext *s = ctx->priv; \ AVFrame *in = arg; \ AVFrame *out = s->out; \ const int in_ylinesize = in->linesize[0]; \ const int in_ulinesize = in->linesize[1]; \ const int in_vlinesize = in->linesize[2]; \ const int out_ulinesize = out->linesize[1]; \ const int out_vlinesize = out->linesize[2]; \ const int chroma_w = s->chroma_w; \ const int chroma_h = s->chroma_h; \ const int stepw = s->stepw; \ const int steph = s->steph; \ const int sizew = s->sizew; \ const int sizeh = s->sizeh; \ const int thres = s->thres; \ const int thres_y = s->thres_y; \ const int thres_u = s->thres_u; \ const int thres_v = s->thres_v; \ const int h = s->planeheight[1]; \ const int w = s->planewidth[1]; \ const int slice_start = (h * jobnr) / nb_jobs; \ const int slice_end = (h * (jobnr+1)) / nb_jobs; \ type *out_uptr = (type *)(out->data[1] + slice_start * out_ulinesize); \ type *out_vptr = (type *)(out->data[2] + slice_start * out_vlinesize); \ \ { \ const int h = s->planeheight[0]; \ const int slice_start = (h * jobnr) / nb_jobs; \ const int slice_end = (h * (jobnr+1)) / nb_jobs; \ \ av_image_copy_plane(out->data[0] + slice_start * out->linesize[0], \ out->linesize[0], \ in->data[0] + slice_start * in->linesize[0], \ in->linesize[0], \ s->linesize[0], slice_end - slice_start); \ \ if (s->nb_planes == 4) { \ av_image_copy_plane(out->data[3] + slice_start * out->linesize[3], \ out->linesize[3], \ in->data[3] + slice_start * in->linesize[3], \ in->linesize[3], \ s->linesize[3], slice_end - slice_start); \ } \ } \ \ for (int y = slice_start; y < slice_end; y++) { \ const type *in_yptr = (const type *)(in->data[0] + y * chroma_h * in_ylinesize); \ const type *in_uptr = (const type *)(in->data[1] + y * in_ulinesize); \ const type *in_vptr = (const type *)(in->data[2] + y * in_vlinesize); \ const int yystart = FFMAX(0, y - sizeh); \ const int yystop = FFMIN(h - 1, y + sizeh); \ \ for (int x = 0; x < w; x++) { \ const int xxstart = FFMAX(0, x - sizew); \ const int xxstop = FFMIN(w - 1, x + sizew); \ const int cy = in_yptr[x * chroma_w]; \ const int cu = in_uptr[x]; \ const int cv = in_vptr[x]; \ int su = cu; \ int sv = cv; \ int cn = 1; \ \ for (int yy = yystart; yy <= yystop; yy += steph) { \ const type *in_yptr = (const type *)(in->data[0] + yy * chroma_h * in_ylinesize); \ const type *in_uptr = (const type *)(in->data[1] + yy * in_ulinesize); \ const type *in_vptr = (const type *)(in->data[2] + yy * in_vlinesize); \ \ for (int xx = xxstart; xx <= xxstop; xx += stepw) { \ const ctype Y = in_yptr[xx * chroma_w]; \ const ctype U = in_uptr[xx]; \ const ctype V = in_vptr[xx]; \ const ctype cyY = FFABS(cy - Y); \ const ctype cuU = FFABS(cu - U); \ const ctype cvV = FFABS(cv - V); \ \ if (extra && fun(cyY, cuU, cvV) < thres && \ cuU < thres_u && cvV < thres_v && \ cyY < thres_y) { \ su += U; \ sv += V; \ cn++; \ } else if (fun(cyY, cuU, cvV) < thres) { \ su += U; \ sv += V; \ cn++; \ } \ } \ } \ \ out_uptr[x] = (su + (cn >> 1)) / cn; \ out_vptr[x] = (sv + (cn >> 1)) / cn; \ } \ \ out_uptr += out_ulinesize / sizeof(type); \ out_vptr += out_vlinesize / sizeof(type); \ } \ \ return 0; \ } FILTER_FUNC(manhattan, 8, int, uint8_t, MANHATTAN_DISTANCE, 0) FILTER_FUNC(manhattan, 16, int, uint16_t, MANHATTAN_DISTANCE, 0) FILTER_FUNC(euclidean, 8, int, uint8_t, EUCLIDEAN_DISTANCE, 0) FILTER_FUNC(euclidean, 16, int64_t, uint16_t, EUCLIDEAN_DISTANCE, 0) FILTER_FUNC(manhattan_e, 8, int, uint8_t, MANHATTAN_DISTANCE, 1) FILTER_FUNC(manhattan_e, 16, int, uint16_t, MANHATTAN_DISTANCE, 1) FILTER_FUNC(euclidean_e, 8, int, uint8_t, EUCLIDEAN_DISTANCE, 1) FILTER_FUNC(euclidean_e, 16, int64_t, uint16_t, EUCLIDEAN_DISTANCE, 1) static int filter_frame(AVFilterLink *inlink, AVFrame *in) { AVFilterContext *ctx = inlink->dst; AVFilterLink *outlink = ctx->outputs[0]; ChromaNRContext *s = ctx->priv; AVFrame *out; switch (s->distance) { case 0: s->filter_slice = s->depth <= 8 ? manhattan_slice8 : manhattan_slice16; break; case 1: s->filter_slice = s->depth <= 8 ? euclidean_slice8 : euclidean_slice16; break; } s->thres = s->threshold * (1 << (s->depth - 8)); s->thres_y = s->threshold_y * (1 << (s->depth - 8)); s->thres_u = s->threshold_u * (1 << (s->depth - 8)); s->thres_v = s->threshold_v * (1 << (s->depth - 8)); if (s->thres_y < 200.f || s->thres_u < 200.f || s->thres_v < 200.f) { switch (s->distance) { case 0: s->filter_slice = s->depth <= 8 ? manhattan_e_slice8 : manhattan_e_slice16; break; case 1: s->filter_slice = s->depth <= 8 ? euclidean_e_slice8 : euclidean_e_slice16; break; } } out = ff_get_video_buffer(outlink, outlink->w, outlink->h); if (!out) { av_frame_free(&in); return AVERROR(ENOMEM); } av_frame_copy_props(out, in); s->out = out; ff_filter_execute(ctx, s->filter_slice, in, NULL, FFMIN3(s->planeheight[1], s->planeheight[2], ff_filter_get_nb_threads(ctx))); av_frame_free(&in); return ff_filter_frame(outlink, out); } static int config_input(AVFilterLink *inlink) { AVFilterContext *ctx = inlink->dst; ChromaNRContext *s = ctx->priv; const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); int ret; s->nb_planes = desc->nb_components; s->depth = desc->comp[0].depth; s->chroma_w = 1 << desc->log2_chroma_w; s->chroma_h = 1 << desc->log2_chroma_h; s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); s->planeheight[0] = s->planeheight[3] = inlink->h; s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); s->planewidth[0] = s->planewidth[3] = inlink->w; if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0) return ret; return 0; } #define OFFSET(x) offsetof(ChromaNRContext, x) #define VF AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM static const AVOption chromanr_options[] = { { "thres", "set y+u+v threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=30}, 1, 200, VF }, { "sizew", "set horizontal patch size", OFFSET(sizew), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF }, { "sizeh", "set vertical patch size", OFFSET(sizeh), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF }, { "stepw", "set horizontal step", OFFSET(stepw), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF }, { "steph", "set vertical step", OFFSET(steph), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF }, { "threy", "set y threshold", OFFSET(threshold_y), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF }, { "threu", "set u threshold", OFFSET(threshold_u), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF }, { "threv", "set v threshold", OFFSET(threshold_v), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF }, { "distance", "set distance type", OFFSET(distance), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, VF, "distance" }, { "manhattan", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, "distance" }, { "euclidean", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, VF, "distance" }, { NULL } }; static const AVFilterPad inputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, .filter_frame = filter_frame, .config_props = config_input, }, }; static const AVFilterPad outputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, }, }; AVFILTER_DEFINE_CLASS(chromanr); const AVFilter ff_vf_chromanr = { .name = "chromanr", .description = NULL_IF_CONFIG_SMALL("Reduce chrominance noise."), .priv_size = sizeof(ChromaNRContext), .priv_class = &chromanr_class, FILTER_OUTPUTS(outputs), FILTER_INPUTS(inputs), FILTER_PIXFMTS_ARRAY(pix_fmts), .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS, .process_command = ff_filter_process_command, };