259 lines
13 KiB
C
259 lines
13 KiB
C
/*
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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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};
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