mirror of https://github.com/FFmpeg/FFmpeg.git
Paul B Mahol
3 years ago
parent
73fe19f09c
commit
32eaf4069e
6 changed files with 405 additions and 1 deletions
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/*
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* Copyright (c) 2021 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/pixdesc.h" |
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#include "libavutil/opt.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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#include "framesync.h" |
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typedef struct ThreadData { |
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AVFrame *filtered, *source, *reference, *dst; |
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} ThreadData; |
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typedef struct LimitDiffContext { |
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const AVClass *class; |
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float threshold; |
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float elasticity; |
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int reference; |
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int planes; |
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int thr1, thr2; |
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int linesize[4]; |
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int planewidth[4], planeheight[4]; |
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int nb_planes; |
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int depth; |
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FFFrameSync fs; |
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void (*limitdiff)(const uint8_t *filtered, uint8_t *dst, |
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const uint8_t *source, const uint8_t *reference, |
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int thr1, int thr2, int w, int depth); |
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} LimitDiffContext; |
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#define OFFSET(x) offsetof(LimitDiffContext, x) |
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#define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM |
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
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static const AVOption limitdiff_options[] = { |
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{ "threshold", "set the threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=1/255.f}, 0, 1, TFLAGS }, |
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{ "elasticity", "set the elasticity", OFFSET(elasticity), AV_OPT_TYPE_FLOAT, {.dbl=2.f}, 0, 10, TFLAGS }, |
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{ "reference", "enable reference stream", OFFSET(reference), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS }, |
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{ "planes", "set the planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, TFLAGS }, |
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{ NULL } |
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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_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_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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static void limitdiff8(const uint8_t *filtered, uint8_t *dst, |
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const uint8_t *source, const uint8_t *reference, |
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int thr1, int thr2, int w, int depth) |
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{ |
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for (int x = 0; x < w; x++) { |
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const int diff = filtered[x] - source[x]; |
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const int diff_ref = FFABS(filtered[x] - reference[x]); |
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if (diff_ref <= thr1) |
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dst[x] = filtered[x]; |
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else if (diff_ref >= thr2) |
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dst[x] = source[x]; |
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else |
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dst[x] = av_clip_uint8(source[x] + diff * (thr2 - diff_ref) / (thr2 - thr1)); |
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} |
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} |
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static void limitdiff16(const uint8_t *ffiltered, uint8_t *ddst, |
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const uint8_t *ssource, const uint8_t *rreference, |
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int thr1, int thr2, int w, int depth) |
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{ |
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const uint16_t *source = (const uint16_t *)ssource; |
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const uint16_t *filtered = (const uint16_t *)ffiltered; |
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const uint16_t *reference = (const uint16_t *)rreference; |
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uint16_t *dst = (uint16_t *)ddst; |
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for (int x = 0; x < w; x++) { |
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const int diff = filtered[x] - source[x]; |
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const int diff_ref = FFABS(filtered[x] - reference[x]); |
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if (diff_ref <= thr1) |
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dst[x] = filtered[x]; |
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else if (diff_ref >= thr2) |
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dst[x] = source[x]; |
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else |
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dst[x] = av_clip_uintp2_c(source[x] + diff * (thr2 - diff_ref) / (thr2 - thr1), depth); |
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} |
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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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LimitDiffContext *s = ctx->priv; |
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
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int vsub, hsub, ret; |
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s->nb_planes = av_pix_fmt_count_planes(inlink->format); |
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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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hsub = desc->log2_chroma_w; |
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vsub = desc->log2_chroma_h; |
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s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, vsub); |
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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, hsub); |
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s->planewidth[0] = s->planewidth[3] = inlink->w; |
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s->depth = desc->comp[0].depth; |
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s->thr1 = s->threshold * ((1 << s->depth) - 1); |
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s->thr2 = s->thr1 * s->elasticity; |
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if (desc->comp[0].depth == 8) |
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s->limitdiff = limitdiff8; |
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else |
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s->limitdiff = limitdiff16; |
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return 0; |
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} |
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static int limitdiff_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
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{ |
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LimitDiffContext *s = ctx->priv; |
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const int depth = s->depth; |
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ThreadData *td = arg; |
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for (int p = 0; p < s->nb_planes; p++) { |
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const ptrdiff_t filtered_linesize = td->filtered->linesize[p]; |
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const ptrdiff_t source_linesize = td->source->linesize[p]; |
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const ptrdiff_t reference_linesize = td->reference->linesize[p]; |
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const ptrdiff_t dst_linesize = td->dst->linesize[p]; |
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const int thr1 = s->thr1; |
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const int thr2 = s->thr2; |
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const int w = s->planewidth[p]; |
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const int h = s->planeheight[p]; |
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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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const uint8_t *filtered = td->filtered->data[p] + slice_start * filtered_linesize; |
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const uint8_t *source = td->source->data[p] + slice_start * source_linesize; |
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const uint8_t *reference = td->reference->data[p] + slice_start * reference_linesize; |
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uint8_t *dst = td->dst->data[p] + slice_start * dst_linesize; |
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if (!((1 << p) & s->planes)) { |
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av_image_copy_plane(dst, dst_linesize, filtered, filtered_linesize, |
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s->linesize[p], slice_end - slice_start); |
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continue; |
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} |
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for (int y = slice_start; y < slice_end; y++) { |
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s->limitdiff(filtered, dst, source, reference, thr1, thr2, w, depth); |
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dst += dst_linesize; |
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filtered += filtered_linesize; |
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source += source_linesize; |
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reference += reference_linesize; |
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} |
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} |
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return 0; |
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} |
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static int process_frame(FFFrameSync *fs) |
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{ |
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AVFilterContext *ctx = fs->parent; |
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LimitDiffContext *s = fs->opaque; |
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AVFilterLink *outlink = ctx->outputs[0]; |
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AVFrame *out, *filtered, *source, *reference = NULL; |
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int ret; |
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if ((ret = ff_framesync_get_frame(&s->fs, 0, &filtered, 0)) < 0 || |
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(ret = ff_framesync_get_frame(&s->fs, 1, &source, 0)) < 0) |
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return ret; |
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if (s->reference) { |
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if ((ret = ff_framesync_get_frame(&s->fs, 2, &reference, 0)) < 0) |
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return ret; |
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} |
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if (ctx->is_disabled) { |
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out = av_frame_clone(filtered); |
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if (!out) |
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return AVERROR(ENOMEM); |
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} else { |
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ThreadData td; |
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
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if (!out) |
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return AVERROR(ENOMEM); |
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av_frame_copy_props(out, filtered); |
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td.filtered = filtered; |
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td.source = source; |
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td.reference = reference ? reference : source; |
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td.dst = out; |
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ff_filter_execute(ctx, limitdiff_slice, &td, NULL, |
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FFMIN(s->planeheight[0], ff_filter_get_nb_threads(ctx))); |
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} |
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out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base); |
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return ff_filter_frame(outlink, out); |
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} |
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static int config_output(AVFilterLink *outlink) |
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{ |
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AVFilterContext *ctx = outlink->src; |
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LimitDiffContext *s = ctx->priv; |
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AVFilterLink *filtered = ctx->inputs[0]; |
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AVFilterLink *source = ctx->inputs[1]; |
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FFFrameSyncIn *in; |
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int ret; |
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if (filtered->w != source->w || filtered->h != source->h) { |
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av_log(ctx, AV_LOG_ERROR, "First input link %s parameters " |
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"(size %dx%d) do not match the corresponding " |
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"second input link %s parameters (%dx%d)\n", |
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ctx->input_pads[0].name, filtered->w, filtered->h, |
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ctx->input_pads[1].name, source->w, source->h); |
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return AVERROR(EINVAL); |
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} |
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if (s->reference) { |
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AVFilterLink *reference = ctx->inputs[2]; |
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if (filtered->w != reference->w || filtered->h != reference->h) { |
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av_log(ctx, AV_LOG_ERROR, "First input link %s parameters " |
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"(size %dx%d) do not match the corresponding " |
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"third input link %s parameters (%dx%d)\n", |
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ctx->input_pads[0].name, filtered->w, filtered->h, |
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ctx->input_pads[1].name, reference->w, reference->h); |
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return AVERROR(EINVAL); |
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} |
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} |
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outlink->w = filtered->w; |
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outlink->h = filtered->h; |
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outlink->sample_aspect_ratio = filtered->sample_aspect_ratio; |
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outlink->frame_rate = filtered->frame_rate; |
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if ((ret = ff_framesync_init(&s->fs, ctx, 2 + !!s->reference)) < 0) |
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return ret; |
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in = s->fs.in; |
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in[0].time_base = filtered->time_base; |
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in[1].time_base = source->time_base; |
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if (s->reference) |
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in[2].time_base = ctx->inputs[2]->time_base; |
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in[0].sync = 1; |
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in[0].before = EXT_STOP; |
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in[0].after = EXT_INFINITY; |
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in[1].sync = 1; |
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in[1].before = EXT_STOP; |
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in[1].after = EXT_INFINITY; |
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if (s->reference) { |
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in[2].sync = 1; |
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in[2].before = EXT_STOP; |
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in[2].after = EXT_INFINITY; |
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} |
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s->fs.opaque = s; |
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s->fs.on_event = process_frame; |
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ret = ff_framesync_configure(&s->fs); |
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outlink->time_base = s->fs.time_base; |
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return ret; |
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} |
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static int activate(AVFilterContext *ctx) |
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{ |
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LimitDiffContext *s = ctx->priv; |
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return ff_framesync_activate(&s->fs); |
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} |
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static av_cold int init(AVFilterContext *ctx) |
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{ |
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const LimitDiffContext *s = ctx->priv; |
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AVFilterPad pad = { |
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.name = "filtered", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.config_props = config_input, |
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}; |
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int ret; |
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if ((ret = ff_append_inpad(ctx, &pad)) < 0) |
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return ret; |
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pad.name = "source"; |
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pad.config_props = NULL; |
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if ((ret = ff_append_inpad(ctx, &pad)) < 0) |
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return ret; |
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if (s->reference) { |
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pad.name = "reference"; |
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pad.config_props = NULL; |
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if ((ret = ff_append_inpad(ctx, &pad)) < 0) |
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return ret; |
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} |
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return 0; |
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} |
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static av_cold void uninit(AVFilterContext *ctx) |
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{ |
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LimitDiffContext *s = ctx->priv; |
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ff_framesync_uninit(&s->fs); |
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} |
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static const AVFilterPad limitdiff_outputs[] = { |
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{ |
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.name = "default", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.config_props = config_output, |
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}, |
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}; |
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AVFILTER_DEFINE_CLASS(limitdiff); |
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const AVFilter ff_vf_limitdiff = { |
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.name = "limitdiff", |
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.description = NULL_IF_CONFIG_SMALL("Apply filtering with limiting difference."), |
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.priv_class = &limitdiff_class, |
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.priv_size = sizeof(LimitDiffContext), |
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.init = init, |
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.uninit = uninit, |
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.activate = activate, |
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FILTER_OUTPUTS(limitdiff_outputs), |
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FILTER_PIXFMTS_ARRAY(pix_fmts), |
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | |
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AVFILTER_FLAG_SLICE_THREADS | |
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AVFILTER_FLAG_DYNAMIC_INPUTS, |
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.process_command = ff_filter_process_command, |
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}; |
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