/* * Copyright (c) 2012 Fredrik Mellbin * Copyright (c) 2013 Clément Bœsch * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * Fieldmatching filter, ported from VFM filter (VapourSynth) by Clément. * Fredrik Mellbin is the author of the VIVTC/VFM filter, which is itself a * light clone of the TIVTC/TFM (AviSynth) filter written by Kevin Stone * (tritical), the original author. * * @see http://bengal.missouri.edu/~kes25c/ * @see http://www.vapoursynth.com/about/ */ #include <inttypes.h> #include "libavutil/avassert.h" #include "libavutil/imgutils.h" #include "libavutil/opt.h" #include "libavutil/timestamp.h" #include "avfilter.h" #include "internal.h" #define INPUT_MAIN 0 #define INPUT_CLEANSRC 1 enum fieldmatch_parity { FM_PARITY_AUTO = -1, FM_PARITY_BOTTOM = 0, FM_PARITY_TOP = 1, }; enum matching_mode { MODE_PC, MODE_PC_N, MODE_PC_U, MODE_PC_N_UB, MODE_PCN, MODE_PCN_UB, NB_MODE }; enum comb_matching_mode { COMBMATCH_NONE, COMBMATCH_SC, COMBMATCH_FULL, NB_COMBMATCH }; enum comb_dbg { COMBDBG_NONE, COMBDBG_PCN, COMBDBG_PCNUB, NB_COMBDBG }; typedef struct { const AVClass *class; AVFrame *prv, *src, *nxt; ///< main sliding window of 3 frames AVFrame *prv2, *src2, *nxt2; ///< sliding window of the optional second stream int got_frame[2]; ///< frame request flag for each input stream int hsub, vsub; ///< chroma subsampling values uint32_t eof; ///< bitmask for end of stream int64_t lastscdiff; int64_t lastn; /* options */ int order; int ppsrc; int mode; ///< matching_mode int field; int mchroma; int y0, y1; int64_t scthresh; double scthresh_flt; int combmatch; ///< comb_matching_mode int combdbg; int cthresh; int chroma; int blockx, blocky; int combpel; /* misc buffers */ uint8_t *map_data[4]; int map_linesize[4]; uint8_t *cmask_data[4]; int cmask_linesize[4]; int *c_array; int tpitchy, tpitchuv; uint8_t *tbuffer; } FieldMatchContext; #define OFFSET(x) offsetof(FieldMatchContext, x) #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM static const AVOption fieldmatch_options[] = { { "order", "specify the assumed field order", OFFSET(order), AV_OPT_TYPE_INT, {.i64=FM_PARITY_AUTO}, -1, 1, FLAGS, "order" }, { "auto", "auto detect parity", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_AUTO}, INT_MIN, INT_MAX, FLAGS, "order" }, { "bff", "assume bottom field first", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "order" }, { "tff", "assume top field first", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_TOP}, INT_MIN, INT_MAX, FLAGS, "order" }, { "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" }, { "pc", "2-way match (p/c)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC}, INT_MIN, INT_MAX, FLAGS, "mode" }, { "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" }, { "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" }, { "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" }, { "pcn", "3-way match (p/c/n)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PCN}, INT_MIN, INT_MAX, FLAGS, "mode" }, { "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" }, { "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 }, { "field", "set the field to match from", OFFSET(field), AV_OPT_TYPE_INT, {.i64=FM_PARITY_AUTO}, -1, 1, FLAGS, "field" }, { "auto", "automatic (same value as 'order')", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_AUTO}, INT_MIN, INT_MAX, FLAGS, "field" }, { "bottom", "bottom field", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "field" }, { "top", "top field", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_TOP}, INT_MIN, INT_MAX, FLAGS, "field" }, { "mchroma", "set whether or not chroma is included during the match comparisons", OFFSET(mchroma), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS }, { "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 }, { "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 }, { "scthresh", "set scene change detection threshold", OFFSET(scthresh_flt), AV_OPT_TYPE_DOUBLE, {.dbl=12}, 0, 100, FLAGS }, { "combmatch", "set combmatching mode", OFFSET(combmatch), AV_OPT_TYPE_INT, {.i64=COMBMATCH_SC}, COMBMATCH_NONE, NB_COMBMATCH-1, FLAGS, "combmatching" }, { "none", "disable combmatching", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_NONE}, INT_MIN, INT_MAX, FLAGS, "combmatching" }, { "sc", "enable combmatching only on scene change", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_SC}, INT_MIN, INT_MAX, FLAGS, "combmatching" }, { "full", "enable combmatching all the time", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_FULL}, INT_MIN, INT_MAX, FLAGS, "combmatching" }, { "combdbg", "enable comb debug", OFFSET(combdbg), AV_OPT_TYPE_INT, {.i64=COMBDBG_NONE}, COMBDBG_NONE, NB_COMBDBG-1, FLAGS, "dbglvl" }, { "none", "no forced calculation", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_NONE}, INT_MIN, INT_MAX, FLAGS, "dbglvl" }, { "pcn", "calculate p/c/n", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_PCN}, INT_MIN, INT_MAX, FLAGS, "dbglvl" }, { "pcnub", "calculate p/c/n/u/b", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_PCNUB}, INT_MIN, INT_MAX, FLAGS, "dbglvl" }, { "cthresh", "set the area combing threshold used for combed frame detection", OFFSET(cthresh), AV_OPT_TYPE_INT, {.i64= 9}, -1, 0xff, FLAGS }, { "chroma", "set whether or not chroma is considered in the combed frame decision", OFFSET(chroma), AV_OPT_TYPE_INT, {.i64= 0}, 0, 1, FLAGS }, { "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 }, { "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 }, { "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 }, { NULL } }; AVFILTER_DEFINE_CLASS(fieldmatch); static int get_width(const FieldMatchContext *fm, const AVFrame *f, int plane) { return plane ? FF_CEIL_RSHIFT(f->width, fm->hsub) : f->width; } static int get_height(const FieldMatchContext *fm, const AVFrame *f, int plane) { return plane ? FF_CEIL_RSHIFT(f->height, fm->vsub) : f->height; } static int64_t luma_abs_diff(const AVFrame *f1, const AVFrame *f2) { int x, y; const uint8_t *srcp1 = f1->data[0]; const uint8_t *srcp2 = f2->data[0]; const int src1_linesize = f1->linesize[0]; const int src2_linesize = f2->linesize[0]; const int width = f1->width; const int height = f1->height; int64_t acc = 0; for (y = 0; y < height; y++) { for (x = 0; x < width; x++) acc += abs(srcp1[x] - srcp2[x]); srcp1 += src1_linesize; srcp2 += src2_linesize; } return acc; } static void fill_buf(uint8_t *data, int w, int h, int linesize, uint8_t v) { int y; for (y = 0; y < h; y++) { memset(data, v, w); data += linesize; } } static int calc_combed_score(const FieldMatchContext *fm, const AVFrame *src) { int x, y, plane, max_v = 0; const int cthresh = fm->cthresh; const int cthresh6 = cthresh * 6; for (plane = 0; plane < (fm->chroma ? 3 : 1); plane++) { const uint8_t *srcp = src->data[plane]; const int src_linesize = src->linesize[plane]; const int width = get_width (fm, src, plane); const int height = get_height(fm, src, plane); uint8_t *cmkp = fm->cmask_data[plane]; const int cmk_linesize = fm->cmask_linesize[plane]; if (cthresh < 0) { fill_buf(cmkp, width, height, cmk_linesize, 0xff); continue; } fill_buf(cmkp, width, height, cmk_linesize, 0); /* [1 -3 4 -3 1] vertical filter */ #define FILTER(xm2, xm1, xp1, xp2) \ abs( 4 * srcp[x] \ -3 * (srcp[x + (xm1)*src_linesize] + srcp[x + (xp1)*src_linesize]) \ + (srcp[x + (xm2)*src_linesize] + srcp[x + (xp2)*src_linesize])) > cthresh6 /* first line */ for (x = 0; x < width; x++) { const int s1 = abs(srcp[x] - srcp[x + src_linesize]); if (s1 > cthresh && FILTER(2, 1, 1, 2)) cmkp[x] = 0xff; } srcp += src_linesize; cmkp += cmk_linesize; /* second line */ for (x = 0; x < width; x++) { const int s1 = abs(srcp[x] - srcp[x - src_linesize]); const int s2 = abs(srcp[x] - srcp[x + src_linesize]); if (s1 > cthresh && s2 > cthresh && FILTER(2, -1, 1, 2)) cmkp[x] = 0xff; } srcp += src_linesize; cmkp += cmk_linesize; /* all lines minus first two and last two */ for (y = 2; y < height-2; y++) { for (x = 0; x < width; x++) { const int s1 = abs(srcp[x] - srcp[x - src_linesize]); const int s2 = abs(srcp[x] - srcp[x + src_linesize]); if (s1 > cthresh && s2 > cthresh && FILTER(-2, -1, 1, 2)) cmkp[x] = 0xff; } srcp += src_linesize; cmkp += cmk_linesize; } /* before-last line */ for (x = 0; x < width; x++) { const int s1 = abs(srcp[x] - srcp[x - src_linesize]); const int s2 = abs(srcp[x] - srcp[x + src_linesize]); if (s1 > cthresh && s2 > cthresh && FILTER(-2, -1, 1, -2)) cmkp[x] = 0xff; } srcp += src_linesize; cmkp += cmk_linesize; /* last line */ for (x = 0; x < width; x++) { const int s1 = abs(srcp[x] - srcp[x - src_linesize]); if (s1 > cthresh && FILTER(-2, -1, -1, -2)) cmkp[x] = 0xff; } } if (fm->chroma) { uint8_t *cmkp = fm->cmask_data[0]; uint8_t *cmkpU = fm->cmask_data[1]; uint8_t *cmkpV = fm->cmask_data[2]; const int width = FF_CEIL_RSHIFT(src->width, fm->hsub); const int height = FF_CEIL_RSHIFT(src->height, fm->vsub); const int cmk_linesize = fm->cmask_linesize[0] << 1; const int cmk_linesizeUV = fm->cmask_linesize[2]; uint8_t *cmkpp = cmkp - (cmk_linesize>>1); uint8_t *cmkpn = cmkp + (cmk_linesize>>1); uint8_t *cmkpnn = cmkp + cmk_linesize; for (y = 1; y < height - 1; y++) { cmkpp += cmk_linesize; cmkp += cmk_linesize; cmkpn += cmk_linesize; cmkpnn += cmk_linesize; cmkpV += cmk_linesizeUV; cmkpU += cmk_linesizeUV; for (x = 1; x < width - 1; x++) { #define HAS_FF_AROUND(p, lz) (p[(x)-1 - (lz)] == 0xff || p[(x) - (lz)] == 0xff || p[(x)+1 - (lz)] == 0xff || \ p[(x)-1 ] == 0xff || p[(x)+1 ] == 0xff || \ p[(x)-1 + (lz)] == 0xff || p[(x) + (lz)] == 0xff || p[(x)+1 + (lz)] == 0xff) if ((cmkpV[x] == 0xff && HAS_FF_AROUND(cmkpV, cmk_linesizeUV)) || (cmkpU[x] == 0xff && HAS_FF_AROUND(cmkpU, cmk_linesizeUV))) { ((uint16_t*)cmkp)[x] = 0xffff; ((uint16_t*)cmkpn)[x] = 0xffff; if (y&1) ((uint16_t*)cmkpp)[x] = 0xffff; else ((uint16_t*)cmkpnn)[x] = 0xffff; } } } } { const int blockx = fm->blockx; const int blocky = fm->blocky; const int xhalf = blockx/2; const int yhalf = blocky/2; const int cmk_linesize = fm->cmask_linesize[0]; const uint8_t *cmkp = fm->cmask_data[0] + cmk_linesize; const int width = src->width; const int height = src->height; const int xblocks = ((width+xhalf)/blockx) + 1; const int xblocks4 = xblocks<<2; const int yblocks = ((height+yhalf)/blocky) + 1; int *c_array = fm->c_array; const int arraysize = (xblocks*yblocks)<<2; int heighta = (height/(blocky/2))*(blocky/2); const int widtha = (width /(blockx/2))*(blockx/2); if (heighta == height) heighta = height - yhalf; memset(c_array, 0, arraysize * sizeof(*c_array)); #define C_ARRAY_ADD(v) do { \ const int box1 = (x / blockx) * 4; \ const int box2 = ((x + xhalf) / blockx) * 4; \ c_array[temp1 + box1 ] += v; \ c_array[temp1 + box2 + 1] += v; \ c_array[temp2 + box1 + 2] += v; \ c_array[temp2 + box2 + 3] += v; \ } while (0) #define VERTICAL_HALF(y_start, y_end) do { \ for (y = y_start; y < y_end; y++) { \ const int temp1 = (y / blocky) * xblocks4; \ const int temp2 = ((y + yhalf) / blocky) * xblocks4; \ for (x = 0; x < width; x++) \ if (cmkp[x - cmk_linesize] == 0xff && \ cmkp[x ] == 0xff && \ cmkp[x + cmk_linesize] == 0xff) \ C_ARRAY_ADD(1); \ cmkp += cmk_linesize; \ } \ } while (0) VERTICAL_HALF(1, yhalf); for (y = yhalf; y < heighta; y += yhalf) { const int temp1 = (y / blocky) * xblocks4; const int temp2 = ((y + yhalf) / blocky) * xblocks4; for (x = 0; x < widtha; x += xhalf) { const uint8_t *cmkp_tmp = cmkp + x; int u, v, sum = 0; for (u = 0; u < yhalf; u++) { for (v = 0; v < xhalf; v++) if (cmkp_tmp[v - cmk_linesize] == 0xff && cmkp_tmp[v ] == 0xff && cmkp_tmp[v + cmk_linesize] == 0xff) sum++; cmkp_tmp += cmk_linesize; } if (sum) C_ARRAY_ADD(sum); } for (x = widtha; x < width; x++) { const uint8_t *cmkp_tmp = cmkp + x; int u, sum = 0; for (u = 0; u < yhalf; u++) { if (cmkp_tmp[-cmk_linesize] == 0xff && cmkp_tmp[ 0] == 0xff && cmkp_tmp[ cmk_linesize] == 0xff) sum++; 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 }; AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); if (!fmts_list) return AVERROR(ENOMEM); return ff_set_common_formats(ctx, fmts_list); } 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 ff_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, };