985 lines
39 KiB
C
985 lines
39 KiB
C
/*
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* Copyright (c) 2012 Fredrik Mellbin
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* Copyright (c) 2013 Clément Bœsch
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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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/**
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* @file
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* Fieldmatching filter, ported from VFM filter (VapouSsynth) by Clément.
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* Fredrik Mellbin is the author of the VIVTC/VFM filter, which is itself a
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* light clone of the TIVTC/TFM (AviSynth) filter written by Kevin Stone
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* (tritical), the original author.
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*
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* @see http://bengal.missouri.edu/~kes25c/
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* @see http://www.vapoursynth.com/about/
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*/
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#include <inttypes.h>
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#include "libavutil/avassert.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/opt.h"
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#include "libavutil/timestamp.h"
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#include "avfilter.h"
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#include "internal.h"
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#define INPUT_MAIN 0
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#define INPUT_CLEANSRC 1
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enum fieldmatch_parity {
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FM_PARITY_AUTO = -1,
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FM_PARITY_BOTTOM = 0,
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FM_PARITY_TOP = 1,
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};
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enum matching_mode {
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MODE_PC,
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MODE_PC_N,
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MODE_PC_U,
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MODE_PC_N_UB,
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MODE_PCN,
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MODE_PCN_UB,
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NB_MODE
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};
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enum comb_matching_mode {
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COMBMATCH_NONE,
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COMBMATCH_SC,
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COMBMATCH_FULL,
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NB_COMBMATCH
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};
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enum comb_dbg {
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COMBDBG_NONE,
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COMBDBG_PCN,
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COMBDBG_PCNUB,
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NB_COMBDBG
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};
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typedef struct {
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const AVClass *class;
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AVFrame *prv, *src, *nxt; ///< main sliding window of 3 frames
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AVFrame *prv2, *src2, *nxt2; ///< sliding window of the optional second stream
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int got_frame[2]; ///< frame request flag for each input stream
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int hsub, vsub; ///< chroma subsampling values
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uint32_t eof; ///< bitmask for end of stream
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int64_t lastscdiff;
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int64_t lastn;
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/* options */
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int order;
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int ppsrc;
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enum matching_mode mode;
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int field;
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int mchroma;
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int y0, y1;
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int64_t scthresh;
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double scthresh_flt;
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enum comb_matching_mode combmatch;
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int combdbg;
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int cthresh;
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int chroma;
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int blockx, blocky;
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int combpel;
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/* misc buffers */
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uint8_t *map_data[4];
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int map_linesize[4];
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uint8_t *cmask_data[4];
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int cmask_linesize[4];
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int *c_array;
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int tpitchy, tpitchuv;
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uint8_t *tbuffer;
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} FieldMatchContext;
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#define OFFSET(x) offsetof(FieldMatchContext, x)
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
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static const AVOption fieldmatch_options[] = {
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{ "order", "specify the assumed field order", OFFSET(order), AV_OPT_TYPE_INT, {.i64=FM_PARITY_AUTO}, -1, 1, FLAGS, "order" },
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{ "auto", "auto detect parity", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_AUTO}, INT_MIN, INT_MAX, FLAGS, "order" },
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{ "bff", "assume bottom field first", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "order" },
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{ "tff", "assume top field first", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_TOP}, INT_MIN, INT_MAX, FLAGS, "order" },
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{ "mode", "set the matching mode or strategy to use", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_PC_N}, MODE_PC, NB_MODE-1, FLAGS, "mode" },
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{ "pc", "2-way match (p/c)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC}, INT_MIN, INT_MAX, FLAGS, "mode" },
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{ "pc_n", "2-way match + 3rd match on combed (p/c + u)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC_N}, INT_MIN, INT_MAX, FLAGS, "mode" },
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{ "pc_u", "2-way match + 3rd match (same order) on combed (p/c + u)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC_U}, INT_MIN, INT_MAX, FLAGS, "mode" },
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{ "pc_n_ub", "2-way match + 3rd match on combed + 4th/5th matches if still combed (p/c + u + u/b)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC_N_UB}, INT_MIN, INT_MAX, FLAGS, "mode" },
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{ "pcn", "3-way match (p/c/n)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PCN}, INT_MIN, INT_MAX, FLAGS, "mode" },
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{ "pcn_ub", "3-way match + 4th/5th matches on combed (p/c/n + u/b)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PCN_UB}, INT_MIN, INT_MAX, FLAGS, "mode" },
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{ "ppsrc", "mark main input as a pre-processed input and activate clean source input stream", OFFSET(ppsrc), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS },
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{ "field", "set the field to match from", OFFSET(field), AV_OPT_TYPE_INT, {.i64=FM_PARITY_AUTO}, -1, 1, FLAGS, "field" },
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{ "auto", "automatic (same value as 'order')", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_AUTO}, INT_MIN, INT_MAX, FLAGS, "field" },
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{ "bottom", "bottom field", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "field" },
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{ "top", "top field", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_TOP}, INT_MIN, INT_MAX, FLAGS, "field" },
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{ "mchroma", "set whether or not chroma is included during the match comparisons", OFFSET(mchroma), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS },
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{ "y0", "define an exclusion band which excludes the lines between y0 and y1 from the field matching decision", OFFSET(y0), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
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{ "y1", "define an exclusion band which excludes the lines between y0 and y1 from the field matching decision", OFFSET(y1), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
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{ "scthresh", "set scene change detection threshold", OFFSET(scthresh_flt), AV_OPT_TYPE_DOUBLE, {.dbl=12}, 0, 100, FLAGS },
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{ "combmatch", "set combmatching mode", OFFSET(combmatch), AV_OPT_TYPE_INT, {.i64=COMBMATCH_SC}, COMBMATCH_NONE, NB_COMBMATCH-1, FLAGS, "combmatching" },
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{ "none", "disable combmatching", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_NONE}, INT_MIN, INT_MAX, FLAGS, "combmatching" },
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{ "sc", "enable combmatching only on scene change", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_SC}, INT_MIN, INT_MAX, FLAGS, "combmatching" },
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{ "full", "enable combmatching all the time", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_FULL}, INT_MIN, INT_MAX, FLAGS, "combmatching" },
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{ "combdbg", "enable comb debug", OFFSET(combdbg), AV_OPT_TYPE_INT, {.i64=COMBDBG_NONE}, COMBDBG_NONE, NB_COMBDBG-1, FLAGS, "dbglvl" },
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{ "none", "no forced calculation", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_NONE}, INT_MIN, INT_MAX, FLAGS, "dbglvl" },
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{ "pcn", "calculate p/c/n", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_PCN}, INT_MIN, INT_MAX, FLAGS, "dbglvl" },
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{ "pcnub", "calculate p/c/n/u/b", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_PCNUB}, INT_MIN, INT_MAX, FLAGS, "dbglvl" },
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{ "cthresh", "set the area combing threshold used for combed frame detection", OFFSET(cthresh), AV_OPT_TYPE_INT, {.i64= 9}, -1, 0xff, FLAGS },
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{ "chroma", "set whether or not chroma is considered in the combed frame decision", OFFSET(chroma), AV_OPT_TYPE_INT, {.i64= 0}, 0, 1, FLAGS },
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{ "blockx", "set the x-axis size of the window used during combed frame detection", OFFSET(blockx), AV_OPT_TYPE_INT, {.i64=16}, 4, 1<<9, FLAGS },
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{ "blocky", "set the y-axis size of the window used during combed frame detection", OFFSET(blocky), AV_OPT_TYPE_INT, {.i64=16}, 4, 1<<9, FLAGS },
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{ "combpel", "set the number of combed pixels inside any of the blocky by blockx size blocks on the frame for the frame to be detected as combed", OFFSET(combpel), AV_OPT_TYPE_INT, {.i64=80}, 0, INT_MAX, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(fieldmatch);
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static int get_width(const FieldMatchContext *fm, const AVFrame *f, int plane)
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{
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return plane ? FF_CEIL_RSHIFT(f->width, fm->hsub) : f->width;
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}
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static int get_height(const FieldMatchContext *fm, const AVFrame *f, int plane)
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{
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return plane ? FF_CEIL_RSHIFT(f->height, fm->vsub) : f->height;
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}
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static int64_t luma_abs_diff(const AVFrame *f1, const AVFrame *f2)
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{
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int x, y;
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const uint8_t *srcp1 = f1->data[0];
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const uint8_t *srcp2 = f2->data[0];
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const int src1_linesize = f1->linesize[0];
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const int src2_linesize = f2->linesize[0];
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const int width = f1->width;
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const int height = f1->height;
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int64_t acc = 0;
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for (y = 0; y < height; y++) {
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for (x = 0; x < width; x++)
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acc += abs(srcp1[x] - srcp2[x]);
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srcp1 += src1_linesize;
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srcp2 += src2_linesize;
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}
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return acc;
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}
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static void fill_buf(uint8_t *data, int w, int h, int linesize, uint8_t v)
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{
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int y;
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for (y = 0; y < h; y++) {
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memset(data, v, w);
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data += linesize;
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}
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}
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static int calc_combed_score(const FieldMatchContext *fm, const AVFrame *src)
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{
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int x, y, plane, max_v = 0;
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const int cthresh = fm->cthresh;
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const int cthresh6 = cthresh * 6;
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for (plane = 0; plane < (fm->chroma ? 3 : 1); plane++) {
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const uint8_t *srcp = src->data[plane];
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const int src_linesize = src->linesize[plane];
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const int width = get_width (fm, src, plane);
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const int height = get_height(fm, src, plane);
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uint8_t *cmkp = fm->cmask_data[plane];
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const int cmk_linesize = fm->cmask_linesize[plane];
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if (cthresh < 0) {
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fill_buf(cmkp, width, height, cmk_linesize, 0xff);
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continue;
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}
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fill_buf(cmkp, width, height, cmk_linesize, 0);
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/* [1 -3 4 -3 1] vertical filter */
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#define FILTER(xm2, xm1, xp1, xp2) \
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abs( 4 * srcp[x] \
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-3 * (srcp[x + (xm1)*src_linesize] + srcp[x + (xp1)*src_linesize]) \
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+ (srcp[x + (xm2)*src_linesize] + srcp[x + (xp2)*src_linesize])) > cthresh6
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/* first line */
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for (x = 0; x < width; x++) {
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const int s1 = abs(srcp[x] - srcp[x + src_linesize]);
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if (s1 > cthresh && FILTER(2, 1, 1, 2))
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cmkp[x] = 0xff;
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}
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srcp += src_linesize;
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cmkp += cmk_linesize;
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/* second line */
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for (x = 0; x < width; x++) {
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const int s1 = abs(srcp[x] - srcp[x - src_linesize]);
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const int s2 = abs(srcp[x] - srcp[x + src_linesize]);
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if (s1 > cthresh && s2 > cthresh && FILTER(2, -1, 1, 2))
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cmkp[x] = 0xff;
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}
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srcp += src_linesize;
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cmkp += cmk_linesize;
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/* all lines minus first two and last two */
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for (y = 2; y < height-2; y++) {
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for (x = 0; x < width; x++) {
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const int s1 = abs(srcp[x] - srcp[x - src_linesize]);
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const int s2 = abs(srcp[x] - srcp[x + src_linesize]);
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if (s1 > cthresh && s2 > cthresh && FILTER(-2, -1, 1, 2))
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cmkp[x] = 0xff;
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}
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srcp += src_linesize;
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cmkp += cmk_linesize;
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}
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/* before-last line */
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for (x = 0; x < width; x++) {
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const int s1 = abs(srcp[x] - srcp[x - src_linesize]);
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const int s2 = abs(srcp[x] - srcp[x + src_linesize]);
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if (s1 > cthresh && s2 > cthresh && FILTER(-2, -1, 1, -2))
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cmkp[x] = 0xff;
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}
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srcp += src_linesize;
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cmkp += cmk_linesize;
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/* last line */
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for (x = 0; x < width; x++) {
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const int s1 = abs(srcp[x] - srcp[x - src_linesize]);
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if (s1 > cthresh && FILTER(-2, -1, -1, -2))
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cmkp[x] = 0xff;
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}
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}
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if (fm->chroma) {
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uint8_t *cmkp = fm->cmask_data[0];
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uint8_t *cmkpU = fm->cmask_data[1];
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uint8_t *cmkpV = fm->cmask_data[2];
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const int width = FF_CEIL_RSHIFT(src->width, fm->hsub);
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const int height = FF_CEIL_RSHIFT(src->height, fm->vsub);
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const int cmk_linesize = fm->cmask_linesize[0] << 1;
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const int cmk_linesizeUV = fm->cmask_linesize[2];
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uint8_t *cmkpp = cmkp - (cmk_linesize>>1);
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uint8_t *cmkpn = cmkp + (cmk_linesize>>1);
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uint8_t *cmkpnn = cmkp + cmk_linesize;
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for (y = 1; y < height - 1; y++) {
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cmkpp += cmk_linesize;
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cmkp += cmk_linesize;
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cmkpn += cmk_linesize;
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cmkpnn += cmk_linesize;
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cmkpV += cmk_linesizeUV;
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cmkpU += cmk_linesizeUV;
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for (x = 1; x < width - 1; x++) {
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#define HAS_FF_AROUND(p, lz) (p[x-1 - lz] == 0xff || p[x - lz] == 0xff || p[x+1 - lz] == 0xff || \
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p[x-1 ] == 0xff || p[x+1 ] == 0xff || \
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p[x-1 + lz] == 0xff || p[x + lz] == 0xff || p[x+1 + lz] == 0xff)
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if ((cmkpV[x] == 0xff && HAS_FF_AROUND(cmkpV, cmk_linesizeUV)) ||
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(cmkpU[x] == 0xff && HAS_FF_AROUND(cmkpU, cmk_linesizeUV))) {
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((uint16_t*)cmkp)[x] = 0xffff;
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((uint16_t*)cmkpn)[x] = 0xffff;
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if (y&1) ((uint16_t*)cmkpp)[x] = 0xffff;
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else ((uint16_t*)cmkpnn)[x] = 0xffff;
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}
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}
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}
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}
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{
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const int blockx = fm->blockx;
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const int blocky = fm->blocky;
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const int xhalf = blockx/2;
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const int yhalf = blocky/2;
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const int cmk_linesize = fm->cmask_linesize[0];
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const uint8_t *cmkp = fm->cmask_data[0] + cmk_linesize;
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const int width = src->width;
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const int height = src->height;
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const int xblocks = ((width+xhalf)/blockx) + 1;
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const int xblocks4 = xblocks<<2;
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const int yblocks = ((height+yhalf)/blocky) + 1;
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int *c_array = fm->c_array;
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const int arraysize = (xblocks*yblocks)<<2;
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int heighta = (height/(blocky/2))*(blocky/2);
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const int widtha = (width /(blockx/2))*(blockx/2);
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if (heighta == height)
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heighta = height - yhalf;
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memset(c_array, 0, arraysize * sizeof(*c_array));
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#define C_ARRAY_ADD(v) do { \
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const int box1 = (x / blockx) * 4; \
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const int box2 = ((x + xhalf) / blockx) * 4; \
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c_array[temp1 + box1 ] += v; \
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c_array[temp1 + box2 + 1] += v; \
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c_array[temp2 + box1 + 2] += v; \
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c_array[temp2 + box2 + 3] += v; \
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} while (0)
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#define VERTICAL_HALF(y_start, y_end) do { \
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for (y = y_start; y < y_end; y++) { \
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const int temp1 = (y / blocky) * xblocks4; \
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const int temp2 = ((y + yhalf) / blocky) * xblocks4; \
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for (x = 0; x < width; x++) \
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if (cmkp[x - cmk_linesize] == 0xff && \
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cmkp[x ] == 0xff && \
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cmkp[x + cmk_linesize] == 0xff) \
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C_ARRAY_ADD(1); \
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cmkp += cmk_linesize; \
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} \
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} while (0)
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VERTICAL_HALF(1, yhalf);
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for (y = yhalf; y < heighta; y += yhalf) {
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const int temp1 = (y / blocky) * xblocks4;
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const int temp2 = ((y + yhalf) / blocky) * xblocks4;
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for (x = 0; x < widtha; x += xhalf) {
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const uint8_t *cmkp_tmp = cmkp + x;
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int u, v, sum = 0;
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for (u = 0; u < yhalf; u++) {
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for (v = 0; v < xhalf; v++)
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if (cmkp_tmp[v - cmk_linesize] == 0xff &&
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cmkp_tmp[v ] == 0xff &&
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cmkp_tmp[v + cmk_linesize] == 0xff)
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sum++;
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cmkp_tmp += cmk_linesize;
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}
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if (sum)
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C_ARRAY_ADD(sum);
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}
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for (x = widtha; x < width; x++) {
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const uint8_t *cmkp_tmp = cmkp + x;
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int u, sum = 0;
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for (u = 0; u < yhalf; u++) {
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if (cmkp_tmp[-cmk_linesize] == 0xff &&
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cmkp_tmp[ 0] == 0xff &&
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cmkp_tmp[ cmk_linesize] == 0xff)
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sum++;
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cmkp_tmp += cmk_linesize;
|
|
}
|
|
if (sum)
|
|
C_ARRAY_ADD(sum);
|
|
}
|
|
|
|
cmkp += cmk_linesize * yhalf;
|
|
}
|
|
|
|
VERTICAL_HALF(heighta, height - 1);
|
|
|
|
for (x = 0; x < arraysize; x++)
|
|
if (c_array[x] > max_v)
|
|
max_v = c_array[x];
|
|
}
|
|
return max_v;
|
|
}
|
|
|
|
// the secret is that tbuffer is an interlaced, offset subset of all the lines
|
|
static void build_abs_diff_mask(const uint8_t *prvp, int prv_linesize,
|
|
const uint8_t *nxtp, int nxt_linesize,
|
|
uint8_t *tbuffer, int tbuf_linesize,
|
|
int width, int height)
|
|
{
|
|
int y, x;
|
|
|
|
prvp -= prv_linesize;
|
|
nxtp -= nxt_linesize;
|
|
for (y = 0; y < height; y++) {
|
|
for (x = 0; x < width; x++)
|
|
tbuffer[x] = FFABS(prvp[x] - nxtp[x]);
|
|
prvp += prv_linesize;
|
|
nxtp += nxt_linesize;
|
|
tbuffer += tbuf_linesize;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Build a map over which pixels differ a lot/a little
|
|
*/
|
|
static void build_diff_map(FieldMatchContext *fm,
|
|
const uint8_t *prvp, int prv_linesize,
|
|
const uint8_t *nxtp, int nxt_linesize,
|
|
uint8_t *dstp, int dst_linesize, int height,
|
|
int width, int plane)
|
|
{
|
|
int x, y, u, diff, count;
|
|
int tpitch = plane ? fm->tpitchuv : fm->tpitchy;
|
|
const uint8_t *dp = fm->tbuffer + tpitch;
|
|
|
|
build_abs_diff_mask(prvp, prv_linesize, nxtp, nxt_linesize,
|
|
fm->tbuffer, tpitch, width, height>>1);
|
|
|
|
for (y = 2; y < height - 2; y += 2) {
|
|
for (x = 1; x < width - 1; x++) {
|
|
diff = dp[x];
|
|
if (diff > 3) {
|
|
for (count = 0, u = x-1; u < x+2 && count < 2; u++) {
|
|
count += dp[u-tpitch] > 3;
|
|
count += dp[u ] > 3;
|
|
count += dp[u+tpitch] > 3;
|
|
}
|
|
if (count > 1) {
|
|
dstp[x] = 1;
|
|
if (diff > 19) {
|
|
int upper = 0, lower = 0;
|
|
for (count = 0, u = x-1; u < x+2 && count < 6; u++) {
|
|
if (dp[u-tpitch] > 19) { count++; upper = 1; }
|
|
if (dp[u ] > 19) count++;
|
|
if (dp[u+tpitch] > 19) { count++; lower = 1; }
|
|
}
|
|
if (count > 3) {
|
|
if (upper && lower) {
|
|
dstp[x] |= 1<<1;
|
|
} else {
|
|
int upper2 = 0, lower2 = 0;
|
|
for (u = FFMAX(x-4,0); u < FFMIN(x+5,width); u++) {
|
|
if (y != 2 && dp[u-2*tpitch] > 19) upper2 = 1;
|
|
if ( dp[u- tpitch] > 19) upper = 1;
|
|
if ( dp[u+ tpitch] > 19) lower = 1;
|
|
if (y != height-4 && dp[u+2*tpitch] > 19) lower2 = 1;
|
|
}
|
|
if ((upper && (lower || upper2)) ||
|
|
(lower && (upper || lower2)))
|
|
dstp[x] |= 1<<1;
|
|
else if (count > 5)
|
|
dstp[x] |= 1<<2;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
dp += tpitch;
|
|
dstp += dst_linesize;
|
|
}
|
|
}
|
|
|
|
enum { mP, mC, mN, mB, mU };
|
|
|
|
static int get_field_base(int match, int field)
|
|
{
|
|
return match < 3 ? 2 - field : 1 + field;
|
|
}
|
|
|
|
static AVFrame *select_frame(FieldMatchContext *fm, int match)
|
|
{
|
|
if (match == mP || match == mB) return fm->prv;
|
|
else if (match == mN || match == mU) return fm->nxt;
|
|
else /* match == mC */ return fm->src;
|
|
}
|
|
|
|
static int compare_fields(FieldMatchContext *fm, int match1, int match2, int field)
|
|
{
|
|
int plane, ret;
|
|
uint64_t accumPc = 0, accumPm = 0, accumPml = 0;
|
|
uint64_t accumNc = 0, accumNm = 0, accumNml = 0;
|
|
int norm1, norm2, mtn1, mtn2;
|
|
float c1, c2, mr;
|
|
const AVFrame *src = fm->src;
|
|
|
|
for (plane = 0; plane < (fm->mchroma ? 3 : 1); plane++) {
|
|
int x, y, temp1, temp2, fbase;
|
|
const AVFrame *prev, *next;
|
|
uint8_t *mapp = fm->map_data[plane];
|
|
int map_linesize = fm->map_linesize[plane];
|
|
const uint8_t *srcp = src->data[plane];
|
|
const int src_linesize = src->linesize[plane];
|
|
const int srcf_linesize = src_linesize << 1;
|
|
int prv_linesize, nxt_linesize;
|
|
int prvf_linesize, nxtf_linesize;
|
|
const int width = get_width (fm, src, plane);
|
|
const int height = get_height(fm, src, plane);
|
|
const int y0a = fm->y0 >> (plane != 0);
|
|
const int y1a = fm->y1 >> (plane != 0);
|
|
const int startx = (plane == 0 ? 8 : 4);
|
|
const int stopx = width - startx;
|
|
const uint8_t *srcpf, *srcf, *srcnf;
|
|
const uint8_t *prvpf, *prvnf, *nxtpf, *nxtnf;
|
|
|
|
fill_buf(mapp, width, height, map_linesize, 0);
|
|
|
|
/* match1 */
|
|
fbase = get_field_base(match1, field);
|
|
srcf = srcp + (fbase + 1) * src_linesize;
|
|
srcpf = srcf - srcf_linesize;
|
|
srcnf = srcf + srcf_linesize;
|
|
mapp = mapp + fbase * map_linesize;
|
|
prev = select_frame(fm, match1);
|
|
prv_linesize = prev->linesize[plane];
|
|
prvf_linesize = prv_linesize << 1;
|
|
prvpf = prev->data[plane] + fbase * prv_linesize; // previous frame, previous field
|
|
prvnf = prvpf + prvf_linesize; // previous frame, next field
|
|
|
|
/* match2 */
|
|
fbase = get_field_base(match2, field);
|
|
next = select_frame(fm, match2);
|
|
nxt_linesize = next->linesize[plane];
|
|
nxtf_linesize = nxt_linesize << 1;
|
|
nxtpf = next->data[plane] + fbase * nxt_linesize; // next frame, previous field
|
|
nxtnf = nxtpf + nxtf_linesize; // next frame, next field
|
|
|
|
map_linesize <<= 1;
|
|
if ((match1 >= 3 && field == 1) || (match1 < 3 && field != 1))
|
|
build_diff_map(fm, prvpf, prvf_linesize, nxtpf, nxtf_linesize,
|
|
mapp, map_linesize, height, width, plane);
|
|
else
|
|
build_diff_map(fm, prvnf, prvf_linesize, nxtnf, nxtf_linesize,
|
|
mapp + map_linesize, map_linesize, height, width, plane);
|
|
|
|
for (y = 2; y < height - 2; y += 2) {
|
|
if (y0a == y1a || y < y0a || y > y1a) {
|
|
for (x = startx; x < stopx; x++) {
|
|
if (mapp[x] > 0 || mapp[x + map_linesize] > 0) {
|
|
temp1 = srcpf[x] + (srcf[x] << 2) + srcnf[x]; // [1 4 1]
|
|
|
|
temp2 = abs(3 * (prvpf[x] + prvnf[x]) - temp1);
|
|
if (temp2 > 23 && ((mapp[x]&1) || (mapp[x + map_linesize]&1)))
|
|
accumPc += temp2;
|
|
if (temp2 > 42) {
|
|
if ((mapp[x]&2) || (mapp[x + map_linesize]&2))
|
|
accumPm += temp2;
|
|
if ((mapp[x]&4) || (mapp[x + map_linesize]&4))
|
|
accumPml += temp2;
|
|
}
|
|
|
|
temp2 = abs(3 * (nxtpf[x] + nxtnf[x]) - temp1);
|
|
if (temp2 > 23 && ((mapp[x]&1) || (mapp[x + map_linesize]&1)))
|
|
accumNc += temp2;
|
|
if (temp2 > 42) {
|
|
if ((mapp[x]&2) || (mapp[x + map_linesize]&2))
|
|
accumNm += temp2;
|
|
if ((mapp[x]&4) || (mapp[x + map_linesize]&4))
|
|
accumNml += temp2;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
prvpf += prvf_linesize;
|
|
prvnf += prvf_linesize;
|
|
srcpf += srcf_linesize;
|
|
srcf += srcf_linesize;
|
|
srcnf += srcf_linesize;
|
|
nxtpf += nxtf_linesize;
|
|
nxtnf += nxtf_linesize;
|
|
mapp += map_linesize;
|
|
}
|
|
}
|
|
|
|
if (accumPm < 500 && accumNm < 500 && (accumPml >= 500 || accumNml >= 500) &&
|
|
FFMAX(accumPml,accumNml) > 3*FFMIN(accumPml,accumNml)) {
|
|
accumPm = accumPml;
|
|
accumNm = accumNml;
|
|
}
|
|
|
|
norm1 = (int)((accumPc / 6.0f) + 0.5f);
|
|
norm2 = (int)((accumNc / 6.0f) + 0.5f);
|
|
mtn1 = (int)((accumPm / 6.0f) + 0.5f);
|
|
mtn2 = (int)((accumNm / 6.0f) + 0.5f);
|
|
c1 = ((float)FFMAX(norm1,norm2)) / ((float)FFMAX(FFMIN(norm1,norm2),1));
|
|
c2 = ((float)FFMAX(mtn1, mtn2)) / ((float)FFMAX(FFMIN(mtn1, mtn2), 1));
|
|
mr = ((float)FFMAX(mtn1, mtn2)) / ((float)FFMAX(FFMAX(norm1,norm2),1));
|
|
if (((mtn1 >= 500 || mtn2 >= 500) && (mtn1*2 < mtn2*1 || mtn2*2 < mtn1*1)) ||
|
|
((mtn1 >= 1000 || mtn2 >= 1000) && (mtn1*3 < mtn2*2 || mtn2*3 < mtn1*2)) ||
|
|
((mtn1 >= 2000 || mtn2 >= 2000) && (mtn1*5 < mtn2*4 || mtn2*5 < mtn1*4)) ||
|
|
((mtn1 >= 4000 || mtn2 >= 4000) && c2 > c1))
|
|
ret = mtn1 > mtn2 ? match2 : match1;
|
|
else if (mr > 0.005 && FFMAX(mtn1, mtn2) > 150 && (mtn1*2 < mtn2*1 || mtn2*2 < mtn1*1))
|
|
ret = mtn1 > mtn2 ? match2 : match1;
|
|
else
|
|
ret = norm1 > norm2 ? match2 : match1;
|
|
return ret;
|
|
}
|
|
|
|
static void copy_fields(const FieldMatchContext *fm, AVFrame *dst,
|
|
const AVFrame *src, int field)
|
|
{
|
|
int plane;
|
|
for (plane = 0; plane < 4 && src->data[plane] && src->linesize[plane]; plane++)
|
|
av_image_copy_plane(dst->data[plane] + field*dst->linesize[plane], dst->linesize[plane] << 1,
|
|
src->data[plane] + field*src->linesize[plane], src->linesize[plane] << 1,
|
|
get_width(fm, src, plane), get_height(fm, src, plane) / 2);
|
|
}
|
|
|
|
static AVFrame *create_weave_frame(AVFilterContext *ctx, int match, int field,
|
|
const AVFrame *prv, AVFrame *src, const AVFrame *nxt)
|
|
{
|
|
AVFrame *dst;
|
|
FieldMatchContext *fm = ctx->priv;
|
|
|
|
if (match == mC) {
|
|
dst = av_frame_clone(src);
|
|
} else {
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
|
|
dst = ff_get_video_buffer(outlink, outlink->w, outlink->h);
|
|
if (!dst)
|
|
return NULL;
|
|
av_frame_copy_props(dst, src);
|
|
|
|
switch (match) {
|
|
case mP: copy_fields(fm, dst, src, 1-field); copy_fields(fm, dst, prv, field); break;
|
|
case mN: copy_fields(fm, dst, src, 1-field); copy_fields(fm, dst, nxt, field); break;
|
|
case mB: copy_fields(fm, dst, src, field); copy_fields(fm, dst, prv, 1-field); break;
|
|
case mU: copy_fields(fm, dst, src, field); copy_fields(fm, dst, nxt, 1-field); break;
|
|
default: av_assert0(0);
|
|
}
|
|
}
|
|
return dst;
|
|
}
|
|
|
|
static int checkmm(AVFilterContext *ctx, int *combs, int m1, int m2,
|
|
AVFrame **gen_frames, int field)
|
|
{
|
|
const FieldMatchContext *fm = ctx->priv;
|
|
|
|
#define LOAD_COMB(mid) do { \
|
|
if (combs[mid] < 0) { \
|
|
if (!gen_frames[mid]) \
|
|
gen_frames[mid] = create_weave_frame(ctx, mid, field, \
|
|
fm->prv, fm->src, fm->nxt); \
|
|
combs[mid] = calc_combed_score(fm, gen_frames[mid]); \
|
|
} \
|
|
} while (0)
|
|
|
|
LOAD_COMB(m1);
|
|
LOAD_COMB(m2);
|
|
|
|
if ((combs[m2] * 3 < combs[m1] || (combs[m2] * 2 < combs[m1] && combs[m1] > fm->combpel)) &&
|
|
abs(combs[m2] - combs[m1]) >= 30 && combs[m2] < fm->combpel)
|
|
return m2;
|
|
else
|
|
return m1;
|
|
}
|
|
|
|
static const int fxo0m[] = { mP, mC, mN, mB, mU };
|
|
static const int fxo1m[] = { mN, mC, mP, mU, mB };
|
|
|
|
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
FieldMatchContext *fm = ctx->priv;
|
|
int combs[] = { -1, -1, -1, -1, -1 };
|
|
int order, field, i, match, sc = 0;
|
|
const int *fxo;
|
|
AVFrame *gen_frames[] = { NULL, NULL, NULL, NULL, NULL };
|
|
AVFrame *dst;
|
|
|
|
/* update frames queue(s) */
|
|
#define SLIDING_FRAME_WINDOW(prv, src, nxt) do { \
|
|
if (prv != src) /* 2nd loop exception (1st has prv==src and we don't want to loose src) */ \
|
|
av_frame_free(&prv); \
|
|
prv = src; \
|
|
src = nxt; \
|
|
if (in) \
|
|
nxt = in; \
|
|
if (!prv) \
|
|
prv = src; \
|
|
if (!prv) /* received only one frame at that point */ \
|
|
return 0; \
|
|
av_assert0(prv && src && nxt); \
|
|
} while (0)
|
|
if (FF_INLINK_IDX(inlink) == INPUT_MAIN) {
|
|
SLIDING_FRAME_WINDOW(fm->prv, fm->src, fm->nxt);
|
|
fm->got_frame[INPUT_MAIN] = 1;
|
|
} else {
|
|
SLIDING_FRAME_WINDOW(fm->prv2, fm->src2, fm->nxt2);
|
|
fm->got_frame[INPUT_CLEANSRC] = 1;
|
|
}
|
|
if (!fm->got_frame[INPUT_MAIN] || (fm->ppsrc && !fm->got_frame[INPUT_CLEANSRC]))
|
|
return 0;
|
|
fm->got_frame[INPUT_MAIN] = fm->got_frame[INPUT_CLEANSRC] = 0;
|
|
in = fm->src;
|
|
|
|
/* parity */
|
|
order = fm->order != FM_PARITY_AUTO ? fm->order : (in->interlaced_frame ? in->top_field_first : 1);
|
|
field = fm->field != FM_PARITY_AUTO ? fm->field : order;
|
|
av_assert0(order == 0 || order == 1 || field == 0 || field == 1);
|
|
fxo = field ^ order ? fxo1m : fxo0m;
|
|
|
|
/* debug mode: we generate all the fields combinations and their associated
|
|
* combed score. XXX: inject as frame metadata? */
|
|
if (fm->combdbg) {
|
|
for (i = 0; i < FF_ARRAY_ELEMS(combs); i++) {
|
|
if (i > mN && fm->combdbg == COMBDBG_PCN)
|
|
break;
|
|
gen_frames[i] = create_weave_frame(ctx, i, field, fm->prv, fm->src, fm->nxt);
|
|
if (!gen_frames[i])
|
|
return AVERROR(ENOMEM);
|
|
combs[i] = calc_combed_score(fm, gen_frames[i]);
|
|
}
|
|
av_log(ctx, AV_LOG_INFO, "COMBS: %3d %3d %3d %3d %3d\n",
|
|
combs[0], combs[1], combs[2], combs[3], combs[4]);
|
|
} else {
|
|
gen_frames[mC] = av_frame_clone(fm->src);
|
|
if (!gen_frames[mC])
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
/* p/c selection and optional 3-way p/c/n matches */
|
|
match = compare_fields(fm, fxo[mC], fxo[mP], field);
|
|
if (fm->mode == MODE_PCN || fm->mode == MODE_PCN_UB)
|
|
match = compare_fields(fm, match, fxo[mN], field);
|
|
|
|
/* scene change check */
|
|
if (fm->combmatch == COMBMATCH_SC) {
|
|
if (fm->lastn == outlink->frame_count - 1) {
|
|
if (fm->lastscdiff > fm->scthresh)
|
|
sc = 1;
|
|
} else if (luma_abs_diff(fm->prv, fm->src) > fm->scthresh) {
|
|
sc = 1;
|
|
}
|
|
|
|
if (!sc) {
|
|
fm->lastn = outlink->frame_count;
|
|
fm->lastscdiff = luma_abs_diff(fm->src, fm->nxt);
|
|
sc = fm->lastscdiff > fm->scthresh;
|
|
}
|
|
}
|
|
|
|
if (fm->combmatch == COMBMATCH_FULL || (fm->combmatch == COMBMATCH_SC && sc)) {
|
|
switch (fm->mode) {
|
|
/* 2-way p/c matches */
|
|
case MODE_PC:
|
|
match = checkmm(ctx, combs, match, match == fxo[mP] ? fxo[mC] : fxo[mP], gen_frames, field);
|
|
break;
|
|
case MODE_PC_N:
|
|
match = checkmm(ctx, combs, match, fxo[mN], gen_frames, field);
|
|
break;
|
|
case MODE_PC_U:
|
|
match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field);
|
|
break;
|
|
case MODE_PC_N_UB:
|
|
match = checkmm(ctx, combs, match, fxo[mN], gen_frames, field);
|
|
match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field);
|
|
match = checkmm(ctx, combs, match, fxo[mB], gen_frames, field);
|
|
break;
|
|
/* 3-way p/c/n matches */
|
|
case MODE_PCN:
|
|
match = checkmm(ctx, combs, match, match == fxo[mP] ? fxo[mC] : fxo[mP], gen_frames, field);
|
|
break;
|
|
case MODE_PCN_UB:
|
|
match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field);
|
|
match = checkmm(ctx, combs, match, fxo[mB], gen_frames, field);
|
|
break;
|
|
default:
|
|
av_assert0(0);
|
|
}
|
|
}
|
|
|
|
/* get output frame and drop the others */
|
|
if (fm->ppsrc) {
|
|
/* field matching was based on a filtered/post-processed input, we now
|
|
* pick the untouched fields from the clean source */
|
|
dst = create_weave_frame(ctx, match, field, fm->prv2, fm->src2, fm->nxt2);
|
|
} else {
|
|
if (!gen_frames[match]) { // XXX: is that possible?
|
|
dst = create_weave_frame(ctx, match, field, fm->prv, fm->src, fm->nxt);
|
|
} else {
|
|
dst = gen_frames[match];
|
|
gen_frames[match] = NULL;
|
|
}
|
|
}
|
|
if (!dst)
|
|
return AVERROR(ENOMEM);
|
|
for (i = 0; i < FF_ARRAY_ELEMS(gen_frames); i++)
|
|
av_frame_free(&gen_frames[i]);
|
|
|
|
/* mark the frame we are unable to match properly as interlaced so a proper
|
|
* de-interlacer can take the relay */
|
|
dst->interlaced_frame = combs[match] >= fm->combpel;
|
|
if (dst->interlaced_frame) {
|
|
av_log(ctx, AV_LOG_WARNING, "Frame #%"PRId64" at %s is still interlaced\n",
|
|
outlink->frame_count, av_ts2timestr(in->pts, &inlink->time_base));
|
|
dst->top_field_first = field;
|
|
}
|
|
|
|
av_log(ctx, AV_LOG_DEBUG, "SC:%d | COMBS: %3d %3d %3d %3d %3d (combpel=%d)"
|
|
" match=%d combed=%s\n", sc, combs[0], combs[1], combs[2], combs[3], combs[4],
|
|
fm->combpel, match, dst->interlaced_frame ? "YES" : "NO");
|
|
|
|
return ff_filter_frame(outlink, dst);
|
|
}
|
|
|
|
static int request_inlink(AVFilterContext *ctx, int lid)
|
|
{
|
|
int ret = 0;
|
|
FieldMatchContext *fm = ctx->priv;
|
|
|
|
if (!fm->got_frame[lid]) {
|
|
AVFilterLink *inlink = ctx->inputs[lid];
|
|
ret = ff_request_frame(inlink);
|
|
if (ret == AVERROR_EOF) { // flushing
|
|
fm->eof |= 1 << lid;
|
|
ret = filter_frame(inlink, NULL);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int request_frame(AVFilterLink *outlink)
|
|
{
|
|
int ret;
|
|
AVFilterContext *ctx = outlink->src;
|
|
FieldMatchContext *fm = ctx->priv;
|
|
const uint32_t eof_mask = 1<<INPUT_MAIN | fm->ppsrc<<INPUT_CLEANSRC;
|
|
|
|
if ((fm->eof & eof_mask) == eof_mask) // flush done?
|
|
return AVERROR_EOF;
|
|
if ((ret = request_inlink(ctx, INPUT_MAIN)) < 0)
|
|
return ret;
|
|
if (fm->ppsrc && (ret = request_inlink(ctx, INPUT_CLEANSRC)) < 0)
|
|
return ret;
|
|
return 0;
|
|
}
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
// TODO: second input source can support >8bit depth
|
|
static const enum AVPixelFormat pix_fmts[] = {
|
|
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
|
|
AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
|
|
AV_PIX_FMT_NONE
|
|
};
|
|
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
|
|
return 0;
|
|
}
|
|
|
|
static int config_input(AVFilterLink *inlink)
|
|
{
|
|
int ret;
|
|
AVFilterContext *ctx = inlink->dst;
|
|
FieldMatchContext *fm = ctx->priv;
|
|
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
|
|
const int w = inlink->w;
|
|
const int h = inlink->h;
|
|
|
|
fm->scthresh = (int64_t)((w * h * 255.0 * fm->scthresh_flt) / 100.0);
|
|
|
|
if ((ret = av_image_alloc(fm->map_data, fm->map_linesize, w, h, inlink->format, 32)) < 0 ||
|
|
(ret = av_image_alloc(fm->cmask_data, fm->cmask_linesize, w, h, inlink->format, 32)) < 0)
|
|
return ret;
|
|
|
|
fm->hsub = pix_desc->log2_chroma_w;
|
|
fm->vsub = pix_desc->log2_chroma_h;
|
|
|
|
fm->tpitchy = FFALIGN(w, 16);
|
|
fm->tpitchuv = FFALIGN(w >> 1, 16);
|
|
|
|
fm->tbuffer = av_malloc(h/2 * fm->tpitchy);
|
|
fm->c_array = av_malloc((((w + fm->blockx/2)/fm->blockx)+1) *
|
|
(((h + fm->blocky/2)/fm->blocky)+1) *
|
|
4 * sizeof(*fm->c_array));
|
|
if (!fm->tbuffer || !fm->c_array)
|
|
return AVERROR(ENOMEM);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int fieldmatch_init(AVFilterContext *ctx)
|
|
{
|
|
const FieldMatchContext *fm = ctx->priv;
|
|
AVFilterPad pad = {
|
|
.name = av_strdup("main"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = filter_frame,
|
|
.config_props = config_input,
|
|
};
|
|
|
|
if (!pad.name)
|
|
return AVERROR(ENOMEM);
|
|
ff_insert_inpad(ctx, INPUT_MAIN, &pad);
|
|
|
|
if (fm->ppsrc) {
|
|
pad.name = av_strdup("clean_src");
|
|
pad.config_props = NULL;
|
|
if (!pad.name)
|
|
return AVERROR(ENOMEM);
|
|
ff_insert_inpad(ctx, INPUT_CLEANSRC, &pad);
|
|
}
|
|
|
|
if ((fm->blockx & (fm->blockx - 1)) ||
|
|
(fm->blocky & (fm->blocky - 1))) {
|
|
av_log(ctx, AV_LOG_ERROR, "blockx and blocky settings must be power of two\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (fm->combpel > fm->blockx * fm->blocky) {
|
|
av_log(ctx, AV_LOG_ERROR, "Combed pixel should not be larger than blockx x blocky\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold void fieldmatch_uninit(AVFilterContext *ctx)
|
|
{
|
|
int i;
|
|
FieldMatchContext *fm = ctx->priv;
|
|
|
|
if (fm->prv != fm->src)
|
|
av_frame_free(&fm->prv);
|
|
if (fm->nxt != fm->src)
|
|
av_frame_free(&fm->nxt);
|
|
av_frame_free(&fm->src);
|
|
av_freep(&fm->map_data[0]);
|
|
av_freep(&fm->cmask_data[0]);
|
|
av_freep(&fm->tbuffer);
|
|
av_freep(&fm->c_array);
|
|
for (i = 0; i < ctx->nb_inputs; i++)
|
|
av_freep(&ctx->input_pads[i].name);
|
|
}
|
|
|
|
static int config_output(AVFilterLink *outlink)
|
|
{
|
|
AVFilterContext *ctx = outlink->src;
|
|
const FieldMatchContext *fm = ctx->priv;
|
|
const AVFilterLink *inlink =
|
|
ctx->inputs[fm->ppsrc ? INPUT_CLEANSRC : INPUT_MAIN];
|
|
|
|
outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP;
|
|
outlink->time_base = inlink->time_base;
|
|
outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
|
|
outlink->frame_rate = inlink->frame_rate;
|
|
outlink->w = inlink->w;
|
|
outlink->h = inlink->h;
|
|
return 0;
|
|
}
|
|
|
|
static const AVFilterPad fieldmatch_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.request_frame = request_frame,
|
|
.config_props = config_output,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter avfilter_vf_fieldmatch = {
|
|
.name = "fieldmatch",
|
|
.description = NULL_IF_CONFIG_SMALL("Field matching for inverse telecine."),
|
|
.query_formats = query_formats,
|
|
.priv_size = sizeof(FieldMatchContext),
|
|
.init = fieldmatch_init,
|
|
.uninit = fieldmatch_uninit,
|
|
.inputs = NULL,
|
|
.outputs = fieldmatch_outputs,
|
|
.priv_class = &fieldmatch_class,
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
|
|
};
|