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vf_fieldmatch.c
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1 /*
2  * Copyright (c) 2012 Fredrik Mellbin
3  * Copyright (c) 2013 Clément Bœsch
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * Fieldmatching filter, ported from VFM filter (VapourSynth) by Clément.
25  * Fredrik Mellbin is the author of the VIVTC/VFM filter, which is itself a
26  * light clone of the TIVTC/TFM (AviSynth) filter written by Kevin Stone
27  * (tritical), the original author.
28  *
29  * @see http://bengal.missouri.edu/~kes25c/
30  * @see http://www.vapoursynth.com/about/
31  */
32 
33 #include <inttypes.h>
34 
35 #include "libavutil/avassert.h"
36 #include "libavutil/imgutils.h"
37 #include "libavutil/opt.h"
38 #include "libavutil/timestamp.h"
39 #include "avfilter.h"
40 #include "internal.h"
41 
42 #define INPUT_MAIN 0
43 #define INPUT_CLEANSRC 1
44 
49 };
50 
59 };
60 
66 };
67 
68 enum comb_dbg {
73 };
74 
75 typedef struct {
76  const AVClass *class;
77 
78  AVFrame *prv, *src, *nxt; ///< main sliding window of 3 frames
79  AVFrame *prv2, *src2, *nxt2; ///< sliding window of the optional second stream
80  int got_frame[2]; ///< frame request flag for each input stream
81  int hsub, vsub; ///< chroma subsampling values
82  uint32_t eof; ///< bitmask for end of stream
83  int64_t lastscdiff;
84  int64_t lastn;
85 
86  /* options */
87  int order;
88  int ppsrc;
89  int mode; ///< matching_mode
90  int field;
91  int mchroma;
92  int y0, y1;
93  int64_t scthresh;
94  double scthresh_flt;
95  int combmatch; ///< comb_matching_mode
96  int combdbg;
97  int cthresh;
98  int chroma;
99  int blockx, blocky;
100  int combpel;
101 
102  /* misc buffers */
103  uint8_t *map_data[4];
104  int map_linesize[4];
105  uint8_t *cmask_data[4];
106  int cmask_linesize[4];
107  int *c_array;
108  int tpitchy, tpitchuv;
111 
112 #define OFFSET(x) offsetof(FieldMatchContext, x)
113 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
114 
115 static const AVOption fieldmatch_options[] = {
116  { "order", "specify the assumed field order", OFFSET(order), AV_OPT_TYPE_INT, {.i64=FM_PARITY_AUTO}, -1, 1, FLAGS, "order" },
117  { "auto", "auto detect parity", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_AUTO}, INT_MIN, INT_MAX, FLAGS, "order" },
118  { "bff", "assume bottom field first", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "order" },
119  { "tff", "assume top field first", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_TOP}, INT_MIN, INT_MAX, FLAGS, "order" },
120  { "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" },
121  { "pc", "2-way match (p/c)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC}, INT_MIN, INT_MAX, FLAGS, "mode" },
122  { "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" },
123  { "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" },
124  { "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" },
125  { "pcn", "3-way match (p/c/n)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PCN}, INT_MIN, INT_MAX, FLAGS, "mode" },
126  { "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" },
127  { "ppsrc", "mark main input as a pre-processed input and activate clean source input stream", OFFSET(ppsrc), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
128  { "field", "set the field to match from", OFFSET(field), AV_OPT_TYPE_INT, {.i64=FM_PARITY_AUTO}, -1, 1, FLAGS, "field" },
129  { "auto", "automatic (same value as 'order')", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_AUTO}, INT_MIN, INT_MAX, FLAGS, "field" },
130  { "bottom", "bottom field", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "field" },
131  { "top", "top field", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_TOP}, INT_MIN, INT_MAX, FLAGS, "field" },
132  { "mchroma", "set whether or not chroma is included during the match comparisons", OFFSET(mchroma), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
133  { "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 },
134  { "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 },
135  { "scthresh", "set scene change detection threshold", OFFSET(scthresh_flt), AV_OPT_TYPE_DOUBLE, {.dbl=12}, 0, 100, FLAGS },
136  { "combmatch", "set combmatching mode", OFFSET(combmatch), AV_OPT_TYPE_INT, {.i64=COMBMATCH_SC}, COMBMATCH_NONE, NB_COMBMATCH-1, FLAGS, "combmatching" },
137  { "none", "disable combmatching", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_NONE}, INT_MIN, INT_MAX, FLAGS, "combmatching" },
138  { "sc", "enable combmatching only on scene change", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_SC}, INT_MIN, INT_MAX, FLAGS, "combmatching" },
139  { "full", "enable combmatching all the time", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_FULL}, INT_MIN, INT_MAX, FLAGS, "combmatching" },
140  { "combdbg", "enable comb debug", OFFSET(combdbg), AV_OPT_TYPE_INT, {.i64=COMBDBG_NONE}, COMBDBG_NONE, NB_COMBDBG-1, FLAGS, "dbglvl" },
141  { "none", "no forced calculation", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_NONE}, INT_MIN, INT_MAX, FLAGS, "dbglvl" },
142  { "pcn", "calculate p/c/n", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_PCN}, INT_MIN, INT_MAX, FLAGS, "dbglvl" },
143  { "pcnub", "calculate p/c/n/u/b", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_PCNUB}, INT_MIN, INT_MAX, FLAGS, "dbglvl" },
144  { "cthresh", "set the area combing threshold used for combed frame detection", OFFSET(cthresh), AV_OPT_TYPE_INT, {.i64= 9}, -1, 0xff, FLAGS },
145  { "chroma", "set whether or not chroma is considered in the combed frame decision", OFFSET(chroma), AV_OPT_TYPE_BOOL,{.i64= 0}, 0, 1, FLAGS },
146  { "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 },
147  { "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 },
148  { "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 },
149  { NULL }
150 };
151 
152 AVFILTER_DEFINE_CLASS(fieldmatch);
153 
154 static int get_width(const FieldMatchContext *fm, const AVFrame *f, int plane)
155 {
156  return plane ? AV_CEIL_RSHIFT(f->width, fm->hsub) : f->width;
157 }
158 
159 static int get_height(const FieldMatchContext *fm, const AVFrame *f, int plane)
160 {
161  return plane ? AV_CEIL_RSHIFT(f->height, fm->vsub) : f->height;
162 }
163 
164 static int64_t luma_abs_diff(const AVFrame *f1, const AVFrame *f2)
165 {
166  int x, y;
167  const uint8_t *srcp1 = f1->data[0];
168  const uint8_t *srcp2 = f2->data[0];
169  const int src1_linesize = f1->linesize[0];
170  const int src2_linesize = f2->linesize[0];
171  const int width = f1->width;
172  const int height = f1->height;
173  int64_t acc = 0;
174 
175  for (y = 0; y < height; y++) {
176  for (x = 0; x < width; x++)
177  acc += abs(srcp1[x] - srcp2[x]);
178  srcp1 += src1_linesize;
179  srcp2 += src2_linesize;
180  }
181  return acc;
182 }
183 
184 static void fill_buf(uint8_t *data, int w, int h, int linesize, uint8_t v)
185 {
186  int y;
187 
188  for (y = 0; y < h; y++) {
189  memset(data, v, w);
190  data += linesize;
191  }
192 }
193 
194 static int calc_combed_score(const FieldMatchContext *fm, const AVFrame *src)
195 {
196  int x, y, plane, max_v = 0;
197  const int cthresh = fm->cthresh;
198  const int cthresh6 = cthresh * 6;
199 
200  for (plane = 0; plane < (fm->chroma ? 3 : 1); plane++) {
201  const uint8_t *srcp = src->data[plane];
202  const int src_linesize = src->linesize[plane];
203  const int width = get_width (fm, src, plane);
204  const int height = get_height(fm, src, plane);
205  uint8_t *cmkp = fm->cmask_data[plane];
206  const int cmk_linesize = fm->cmask_linesize[plane];
207 
208  if (cthresh < 0) {
209  fill_buf(cmkp, width, height, cmk_linesize, 0xff);
210  continue;
211  }
212  fill_buf(cmkp, width, height, cmk_linesize, 0);
213 
214  /* [1 -3 4 -3 1] vertical filter */
215 #define FILTER(xm2, xm1, xp1, xp2) \
216  abs( 4 * srcp[x] \
217  -3 * (srcp[x + (xm1)*src_linesize] + srcp[x + (xp1)*src_linesize]) \
218  + (srcp[x + (xm2)*src_linesize] + srcp[x + (xp2)*src_linesize])) > cthresh6
219 
220  /* first line */
221  for (x = 0; x < width; x++) {
222  const int s1 = abs(srcp[x] - srcp[x + src_linesize]);
223  if (s1 > cthresh && FILTER(2, 1, 1, 2))
224  cmkp[x] = 0xff;
225  }
226  srcp += src_linesize;
227  cmkp += cmk_linesize;
228 
229  /* second line */
230  for (x = 0; x < width; x++) {
231  const int s1 = abs(srcp[x] - srcp[x - src_linesize]);
232  const int s2 = abs(srcp[x] - srcp[x + src_linesize]);
233  if (s1 > cthresh && s2 > cthresh && FILTER(2, -1, 1, 2))
234  cmkp[x] = 0xff;
235  }
236  srcp += src_linesize;
237  cmkp += cmk_linesize;
238 
239  /* all lines minus first two and last two */
240  for (y = 2; y < height-2; y++) {
241  for (x = 0; x < width; x++) {
242  const int s1 = abs(srcp[x] - srcp[x - src_linesize]);
243  const int s2 = abs(srcp[x] - srcp[x + src_linesize]);
244  if (s1 > cthresh && s2 > cthresh && FILTER(-2, -1, 1, 2))
245  cmkp[x] = 0xff;
246  }
247  srcp += src_linesize;
248  cmkp += cmk_linesize;
249  }
250 
251  /* before-last line */
252  for (x = 0; x < width; x++) {
253  const int s1 = abs(srcp[x] - srcp[x - src_linesize]);
254  const int s2 = abs(srcp[x] - srcp[x + src_linesize]);
255  if (s1 > cthresh && s2 > cthresh && FILTER(-2, -1, 1, -2))
256  cmkp[x] = 0xff;
257  }
258  srcp += src_linesize;
259  cmkp += cmk_linesize;
260 
261  /* last line */
262  for (x = 0; x < width; x++) {
263  const int s1 = abs(srcp[x] - srcp[x - src_linesize]);
264  if (s1 > cthresh && FILTER(-2, -1, -1, -2))
265  cmkp[x] = 0xff;
266  }
267  }
268 
269  if (fm->chroma) {
270  uint8_t *cmkp = fm->cmask_data[0];
271  uint8_t *cmkpU = fm->cmask_data[1];
272  uint8_t *cmkpV = fm->cmask_data[2];
273  const int width = AV_CEIL_RSHIFT(src->width, fm->hsub);
274  const int height = AV_CEIL_RSHIFT(src->height, fm->vsub);
275  const int cmk_linesize = fm->cmask_linesize[0] << 1;
276  const int cmk_linesizeUV = fm->cmask_linesize[2];
277  uint8_t *cmkpp = cmkp - (cmk_linesize>>1);
278  uint8_t *cmkpn = cmkp + (cmk_linesize>>1);
279  uint8_t *cmkpnn = cmkp + cmk_linesize;
280  for (y = 1; y < height - 1; y++) {
281  cmkpp += cmk_linesize;
282  cmkp += cmk_linesize;
283  cmkpn += cmk_linesize;
284  cmkpnn += cmk_linesize;
285  cmkpV += cmk_linesizeUV;
286  cmkpU += cmk_linesizeUV;
287  for (x = 1; x < width - 1; x++) {
288 #define HAS_FF_AROUND(p, lz) (p[(x)-1 - (lz)] == 0xff || p[(x) - (lz)] == 0xff || p[(x)+1 - (lz)] == 0xff || \
289  p[(x)-1 ] == 0xff || p[(x)+1 ] == 0xff || \
290  p[(x)-1 + (lz)] == 0xff || p[(x) + (lz)] == 0xff || p[(x)+1 + (lz)] == 0xff)
291  if ((cmkpV[x] == 0xff && HAS_FF_AROUND(cmkpV, cmk_linesizeUV)) ||
292  (cmkpU[x] == 0xff && HAS_FF_AROUND(cmkpU, cmk_linesizeUV))) {
293  ((uint16_t*)cmkp)[x] = 0xffff;
294  ((uint16_t*)cmkpn)[x] = 0xffff;
295  if (y&1) ((uint16_t*)cmkpp)[x] = 0xffff;
296  else ((uint16_t*)cmkpnn)[x] = 0xffff;
297  }
298  }
299  }
300  }
301 
302  {
303  const int blockx = fm->blockx;
304  const int blocky = fm->blocky;
305  const int xhalf = blockx/2;
306  const int yhalf = blocky/2;
307  const int cmk_linesize = fm->cmask_linesize[0];
308  const uint8_t *cmkp = fm->cmask_data[0] + cmk_linesize;
309  const int width = src->width;
310  const int height = src->height;
311  const int xblocks = ((width+xhalf)/blockx) + 1;
312  const int xblocks4 = xblocks<<2;
313  const int yblocks = ((height+yhalf)/blocky) + 1;
314  int *c_array = fm->c_array;
315  const int arraysize = (xblocks*yblocks)<<2;
316  int heighta = (height/(blocky/2))*(blocky/2);
317  const int widtha = (width /(blockx/2))*(blockx/2);
318  if (heighta == height)
319  heighta = height - yhalf;
320  memset(c_array, 0, arraysize * sizeof(*c_array));
321 
322 #define C_ARRAY_ADD(v) do { \
323  const int box1 = (x / blockx) * 4; \
324  const int box2 = ((x + xhalf) / blockx) * 4; \
325  c_array[temp1 + box1 ] += v; \
326  c_array[temp1 + box2 + 1] += v; \
327  c_array[temp2 + box1 + 2] += v; \
328  c_array[temp2 + box2 + 3] += v; \
329 } while (0)
330 
331 #define VERTICAL_HALF(y_start, y_end) do { \
332  for (y = y_start; y < y_end; y++) { \
333  const int temp1 = (y / blocky) * xblocks4; \
334  const int temp2 = ((y + yhalf) / blocky) * xblocks4; \
335  for (x = 0; x < width; x++) \
336  if (cmkp[x - cmk_linesize] == 0xff && \
337  cmkp[x ] == 0xff && \
338  cmkp[x + cmk_linesize] == 0xff) \
339  C_ARRAY_ADD(1); \
340  cmkp += cmk_linesize; \
341  } \
342 } while (0)
343 
344  VERTICAL_HALF(1, yhalf);
345 
346  for (y = yhalf; y < heighta; y += yhalf) {
347  const int temp1 = (y / blocky) * xblocks4;
348  const int temp2 = ((y + yhalf) / blocky) * xblocks4;
349 
350  for (x = 0; x < widtha; x += xhalf) {
351  const uint8_t *cmkp_tmp = cmkp + x;
352  int u, v, sum = 0;
353  for (u = 0; u < yhalf; u++) {
354  for (v = 0; v < xhalf; v++)
355  if (cmkp_tmp[v - cmk_linesize] == 0xff &&
356  cmkp_tmp[v ] == 0xff &&
357  cmkp_tmp[v + cmk_linesize] == 0xff)
358  sum++;
359  cmkp_tmp += cmk_linesize;
360  }
361  if (sum)
362  C_ARRAY_ADD(sum);
363  }
364 
365  for (x = widtha; x < width; x++) {
366  const uint8_t *cmkp_tmp = cmkp + x;
367  int u, sum = 0;
368  for (u = 0; u < yhalf; u++) {
369  if (cmkp_tmp[-cmk_linesize] == 0xff &&
370  cmkp_tmp[ 0] == 0xff &&
371  cmkp_tmp[ cmk_linesize] == 0xff)
372  sum++;
373  cmkp_tmp += cmk_linesize;
374  }
375  if (sum)
376  C_ARRAY_ADD(sum);
377  }
378 
379  cmkp += cmk_linesize * yhalf;
380  }
381 
382  VERTICAL_HALF(heighta, height - 1);
383 
384  for (x = 0; x < arraysize; x++)
385  if (c_array[x] > max_v)
386  max_v = c_array[x];
387  }
388  return max_v;
389 }
390 
391 // the secret is that tbuffer is an interlaced, offset subset of all the lines
392 static void build_abs_diff_mask(const uint8_t *prvp, int prv_linesize,
393  const uint8_t *nxtp, int nxt_linesize,
394  uint8_t *tbuffer, int tbuf_linesize,
395  int width, int height)
396 {
397  int y, x;
398 
399  prvp -= prv_linesize;
400  nxtp -= nxt_linesize;
401  for (y = 0; y < height; y++) {
402  for (x = 0; x < width; x++)
403  tbuffer[x] = FFABS(prvp[x] - nxtp[x]);
404  prvp += prv_linesize;
405  nxtp += nxt_linesize;
406  tbuffer += tbuf_linesize;
407  }
408 }
409 
410 /**
411  * Build a map over which pixels differ a lot/a little
412  */
414  const uint8_t *prvp, int prv_linesize,
415  const uint8_t *nxtp, int nxt_linesize,
416  uint8_t *dstp, int dst_linesize, int height,
417  int width, int plane)
418 {
419  int x, y, u, diff, count;
420  int tpitch = plane ? fm->tpitchuv : fm->tpitchy;
421  const uint8_t *dp = fm->tbuffer + tpitch;
422 
423  build_abs_diff_mask(prvp, prv_linesize, nxtp, nxt_linesize,
424  fm->tbuffer, tpitch, width, height>>1);
425 
426  for (y = 2; y < height - 2; y += 2) {
427  for (x = 1; x < width - 1; x++) {
428  diff = dp[x];
429  if (diff > 3) {
430  for (count = 0, u = x-1; u < x+2 && count < 2; u++) {
431  count += dp[u-tpitch] > 3;
432  count += dp[u ] > 3;
433  count += dp[u+tpitch] > 3;
434  }
435  if (count > 1) {
436  dstp[x] = 1;
437  if (diff > 19) {
438  int upper = 0, lower = 0;
439  for (count = 0, u = x-1; u < x+2 && count < 6; u++) {
440  if (dp[u-tpitch] > 19) { count++; upper = 1; }
441  if (dp[u ] > 19) count++;
442  if (dp[u+tpitch] > 19) { count++; lower = 1; }
443  }
444  if (count > 3) {
445  if (upper && lower) {
446  dstp[x] |= 1<<1;
447  } else {
448  int upper2 = 0, lower2 = 0;
449  for (u = FFMAX(x-4,0); u < FFMIN(x+5,width); u++) {
450  if (y != 2 && dp[u-2*tpitch] > 19) upper2 = 1;
451  if ( dp[u- tpitch] > 19) upper = 1;
452  if ( dp[u+ tpitch] > 19) lower = 1;
453  if (y != height-4 && dp[u+2*tpitch] > 19) lower2 = 1;
454  }
455  if ((upper && (lower || upper2)) ||
456  (lower && (upper || lower2)))
457  dstp[x] |= 1<<1;
458  else if (count > 5)
459  dstp[x] |= 1<<2;
460  }
461  }
462  }
463  }
464  }
465  }
466  dp += tpitch;
467  dstp += dst_linesize;
468  }
469 }
470 
471 enum { mP, mC, mN, mB, mU };
472 
473 static int get_field_base(int match, int field)
474 {
475  return match < 3 ? 2 - field : 1 + field;
476 }
477 
478 static AVFrame *select_frame(FieldMatchContext *fm, int match)
479 {
480  if (match == mP || match == mB) return fm->prv;
481  else if (match == mN || match == mU) return fm->nxt;
482  else /* match == mC */ return fm->src;
483 }
484 
485 static int compare_fields(FieldMatchContext *fm, int match1, int match2, int field)
486 {
487  int plane, ret;
488  uint64_t accumPc = 0, accumPm = 0, accumPml = 0;
489  uint64_t accumNc = 0, accumNm = 0, accumNml = 0;
490  int norm1, norm2, mtn1, mtn2;
491  float c1, c2, mr;
492  const AVFrame *src = fm->src;
493 
494  for (plane = 0; plane < (fm->mchroma ? 3 : 1); plane++) {
495  int x, y, temp1, temp2, fbase;
496  const AVFrame *prev, *next;
497  uint8_t *mapp = fm->map_data[plane];
498  int map_linesize = fm->map_linesize[plane];
499  const uint8_t *srcp = src->data[plane];
500  const int src_linesize = src->linesize[plane];
501  const int srcf_linesize = src_linesize << 1;
502  int prv_linesize, nxt_linesize;
503  int prvf_linesize, nxtf_linesize;
504  const int width = get_width (fm, src, plane);
505  const int height = get_height(fm, src, plane);
506  const int y0a = fm->y0 >> (plane != 0);
507  const int y1a = fm->y1 >> (plane != 0);
508  const int startx = (plane == 0 ? 8 : 4);
509  const int stopx = width - startx;
510  const uint8_t *srcpf, *srcf, *srcnf;
511  const uint8_t *prvpf, *prvnf, *nxtpf, *nxtnf;
512 
513  fill_buf(mapp, width, height, map_linesize, 0);
514 
515  /* match1 */
516  fbase = get_field_base(match1, field);
517  srcf = srcp + (fbase + 1) * src_linesize;
518  srcpf = srcf - srcf_linesize;
519  srcnf = srcf + srcf_linesize;
520  mapp = mapp + fbase * map_linesize;
521  prev = select_frame(fm, match1);
522  prv_linesize = prev->linesize[plane];
523  prvf_linesize = prv_linesize << 1;
524  prvpf = prev->data[plane] + fbase * prv_linesize; // previous frame, previous field
525  prvnf = prvpf + prvf_linesize; // previous frame, next field
526 
527  /* match2 */
528  fbase = get_field_base(match2, field);
529  next = select_frame(fm, match2);
530  nxt_linesize = next->linesize[plane];
531  nxtf_linesize = nxt_linesize << 1;
532  nxtpf = next->data[plane] + fbase * nxt_linesize; // next frame, previous field
533  nxtnf = nxtpf + nxtf_linesize; // next frame, next field
534 
535  map_linesize <<= 1;
536  if ((match1 >= 3 && field == 1) || (match1 < 3 && field != 1))
537  build_diff_map(fm, prvpf, prvf_linesize, nxtpf, nxtf_linesize,
538  mapp, map_linesize, height, width, plane);
539  else
540  build_diff_map(fm, prvnf, prvf_linesize, nxtnf, nxtf_linesize,
541  mapp + map_linesize, map_linesize, height, width, plane);
542 
543  for (y = 2; y < height - 2; y += 2) {
544  if (y0a == y1a || y < y0a || y > y1a) {
545  for (x = startx; x < stopx; x++) {
546  if (mapp[x] > 0 || mapp[x + map_linesize] > 0) {
547  temp1 = srcpf[x] + (srcf[x] << 2) + srcnf[x]; // [1 4 1]
548 
549  temp2 = abs(3 * (prvpf[x] + prvnf[x]) - temp1);
550  if (temp2 > 23 && ((mapp[x]&1) || (mapp[x + map_linesize]&1)))
551  accumPc += temp2;
552  if (temp2 > 42) {
553  if ((mapp[x]&2) || (mapp[x + map_linesize]&2))
554  accumPm += temp2;
555  if ((mapp[x]&4) || (mapp[x + map_linesize]&4))
556  accumPml += temp2;
557  }
558 
559  temp2 = abs(3 * (nxtpf[x] + nxtnf[x]) - temp1);
560  if (temp2 > 23 && ((mapp[x]&1) || (mapp[x + map_linesize]&1)))
561  accumNc += temp2;
562  if (temp2 > 42) {
563  if ((mapp[x]&2) || (mapp[x + map_linesize]&2))
564  accumNm += temp2;
565  if ((mapp[x]&4) || (mapp[x + map_linesize]&4))
566  accumNml += temp2;
567  }
568  }
569  }
570  }
571  prvpf += prvf_linesize;
572  prvnf += prvf_linesize;
573  srcpf += srcf_linesize;
574  srcf += srcf_linesize;
575  srcnf += srcf_linesize;
576  nxtpf += nxtf_linesize;
577  nxtnf += nxtf_linesize;
578  mapp += map_linesize;
579  }
580  }
581 
582  if (accumPm < 500 && accumNm < 500 && (accumPml >= 500 || accumNml >= 500) &&
583  FFMAX(accumPml,accumNml) > 3*FFMIN(accumPml,accumNml)) {
584  accumPm = accumPml;
585  accumNm = accumNml;
586  }
587 
588  norm1 = (int)((accumPc / 6.0f) + 0.5f);
589  norm2 = (int)((accumNc / 6.0f) + 0.5f);
590  mtn1 = (int)((accumPm / 6.0f) + 0.5f);
591  mtn2 = (int)((accumNm / 6.0f) + 0.5f);
592  c1 = ((float)FFMAX(norm1,norm2)) / ((float)FFMAX(FFMIN(norm1,norm2),1));
593  c2 = ((float)FFMAX(mtn1, mtn2)) / ((float)FFMAX(FFMIN(mtn1, mtn2), 1));
594  mr = ((float)FFMAX(mtn1, mtn2)) / ((float)FFMAX(FFMAX(norm1,norm2),1));
595  if (((mtn1 >= 500 || mtn2 >= 500) && (mtn1*2 < mtn2*1 || mtn2*2 < mtn1*1)) ||
596  ((mtn1 >= 1000 || mtn2 >= 1000) && (mtn1*3 < mtn2*2 || mtn2*3 < mtn1*2)) ||
597  ((mtn1 >= 2000 || mtn2 >= 2000) && (mtn1*5 < mtn2*4 || mtn2*5 < mtn1*4)) ||
598  ((mtn1 >= 4000 || mtn2 >= 4000) && c2 > c1))
599  ret = mtn1 > mtn2 ? match2 : match1;
600  else if (mr > 0.005 && FFMAX(mtn1, mtn2) > 150 && (mtn1*2 < mtn2*1 || mtn2*2 < mtn1*1))
601  ret = mtn1 > mtn2 ? match2 : match1;
602  else
603  ret = norm1 > norm2 ? match2 : match1;
604  return ret;
605 }
606 
607 static void copy_fields(const FieldMatchContext *fm, AVFrame *dst,
608  const AVFrame *src, int field)
609 {
610  int plane;
611  for (plane = 0; plane < 4 && src->data[plane] && src->linesize[plane]; plane++) {
612  const int plane_h = get_height(fm, src, plane);
613  const int nb_copy_fields = (plane_h >> 1) + (field ? 0 : (plane_h & 1));
614  av_image_copy_plane(dst->data[plane] + field*dst->linesize[plane], dst->linesize[plane] << 1,
615  src->data[plane] + field*src->linesize[plane], src->linesize[plane] << 1,
616  get_width(fm, src, plane), nb_copy_fields);
617  }
618 }
619 
620 static AVFrame *create_weave_frame(AVFilterContext *ctx, int match, int field,
621  const AVFrame *prv, AVFrame *src, const AVFrame *nxt)
622 {
623  AVFrame *dst;
624  FieldMatchContext *fm = ctx->priv;
625 
626  if (match == mC) {
627  dst = av_frame_clone(src);
628  } else {
629  AVFilterLink *outlink = ctx->outputs[0];
630 
631  dst = ff_get_video_buffer(outlink, outlink->w, outlink->h);
632  if (!dst)
633  return NULL;
634  av_frame_copy_props(dst, src);
635 
636  switch (match) {
637  case mP: copy_fields(fm, dst, src, 1-field); copy_fields(fm, dst, prv, field); break;
638  case mN: copy_fields(fm, dst, src, 1-field); copy_fields(fm, dst, nxt, field); break;
639  case mB: copy_fields(fm, dst, src, field); copy_fields(fm, dst, prv, 1-field); break;
640  case mU: copy_fields(fm, dst, src, field); copy_fields(fm, dst, nxt, 1-field); break;
641  default: av_assert0(0);
642  }
643  }
644  return dst;
645 }
646 
647 static int checkmm(AVFilterContext *ctx, int *combs, int m1, int m2,
648  AVFrame **gen_frames, int field)
649 {
650  const FieldMatchContext *fm = ctx->priv;
651 
652 #define LOAD_COMB(mid) do { \
653  if (combs[mid] < 0) { \
654  if (!gen_frames[mid]) \
655  gen_frames[mid] = create_weave_frame(ctx, mid, field, \
656  fm->prv, fm->src, fm->nxt); \
657  combs[mid] = calc_combed_score(fm, gen_frames[mid]); \
658  } \
659 } while (0)
660 
661  LOAD_COMB(m1);
662  LOAD_COMB(m2);
663 
664  if ((combs[m2] * 3 < combs[m1] || (combs[m2] * 2 < combs[m1] && combs[m1] > fm->combpel)) &&
665  abs(combs[m2] - combs[m1]) >= 30 && combs[m2] < fm->combpel)
666  return m2;
667  else
668  return m1;
669 }
670 
671 static const int fxo0m[] = { mP, mC, mN, mB, mU };
672 static const int fxo1m[] = { mN, mC, mP, mU, mB };
673 
674 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
675 {
676  AVFilterContext *ctx = inlink->dst;
677  AVFilterLink *outlink = ctx->outputs[0];
678  FieldMatchContext *fm = ctx->priv;
679  int combs[] = { -1, -1, -1, -1, -1 };
680  int order, field, i, match, sc = 0;
681  const int *fxo;
682  AVFrame *gen_frames[] = { NULL, NULL, NULL, NULL, NULL };
683  AVFrame *dst;
684 
685  /* update frames queue(s) */
686 #define SLIDING_FRAME_WINDOW(prv, src, nxt) do { \
687  if (prv != src) /* 2nd loop exception (1st has prv==src and we don't want to loose src) */ \
688  av_frame_free(&prv); \
689  prv = src; \
690  src = nxt; \
691  if (in) \
692  nxt = in; \
693  if (!prv) \
694  prv = src; \
695  if (!prv) /* received only one frame at that point */ \
696  return 0; \
697  av_assert0(prv && src && nxt); \
698 } while (0)
699  if (FF_INLINK_IDX(inlink) == INPUT_MAIN) {
700  SLIDING_FRAME_WINDOW(fm->prv, fm->src, fm->nxt);
701  fm->got_frame[INPUT_MAIN] = 1;
702  } else {
703  SLIDING_FRAME_WINDOW(fm->prv2, fm->src2, fm->nxt2);
704  fm->got_frame[INPUT_CLEANSRC] = 1;
705  }
706  if (!fm->got_frame[INPUT_MAIN] || (fm->ppsrc && !fm->got_frame[INPUT_CLEANSRC]))
707  return 0;
709  in = fm->src;
710 
711  /* parity */
712  order = fm->order != FM_PARITY_AUTO ? fm->order : (in->interlaced_frame ? in->top_field_first : 1);
713  field = fm->field != FM_PARITY_AUTO ? fm->field : order;
714  av_assert0(order == 0 || order == 1 || field == 0 || field == 1);
715  fxo = field ^ order ? fxo1m : fxo0m;
716 
717  /* debug mode: we generate all the fields combinations and their associated
718  * combed score. XXX: inject as frame metadata? */
719  if (fm->combdbg) {
720  for (i = 0; i < FF_ARRAY_ELEMS(combs); i++) {
721  if (i > mN && fm->combdbg == COMBDBG_PCN)
722  break;
723  gen_frames[i] = create_weave_frame(ctx, i, field, fm->prv, fm->src, fm->nxt);
724  if (!gen_frames[i])
725  return AVERROR(ENOMEM);
726  combs[i] = calc_combed_score(fm, gen_frames[i]);
727  }
728  av_log(ctx, AV_LOG_INFO, "COMBS: %3d %3d %3d %3d %3d\n",
729  combs[0], combs[1], combs[2], combs[3], combs[4]);
730  } else {
731  gen_frames[mC] = av_frame_clone(fm->src);
732  if (!gen_frames[mC])
733  return AVERROR(ENOMEM);
734  }
735 
736  /* p/c selection and optional 3-way p/c/n matches */
737  match = compare_fields(fm, fxo[mC], fxo[mP], field);
738  if (fm->mode == MODE_PCN || fm->mode == MODE_PCN_UB)
739  match = compare_fields(fm, match, fxo[mN], field);
740 
741  /* scene change check */
742  if (fm->combmatch == COMBMATCH_SC) {
743  if (fm->lastn == outlink->frame_count - 1) {
744  if (fm->lastscdiff > fm->scthresh)
745  sc = 1;
746  } else if (luma_abs_diff(fm->prv, fm->src) > fm->scthresh) {
747  sc = 1;
748  }
749 
750  if (!sc) {
751  fm->lastn = outlink->frame_count;
752  fm->lastscdiff = luma_abs_diff(fm->src, fm->nxt);
753  sc = fm->lastscdiff > fm->scthresh;
754  }
755  }
756 
757  if (fm->combmatch == COMBMATCH_FULL || (fm->combmatch == COMBMATCH_SC && sc)) {
758  switch (fm->mode) {
759  /* 2-way p/c matches */
760  case MODE_PC:
761  match = checkmm(ctx, combs, match, match == fxo[mP] ? fxo[mC] : fxo[mP], gen_frames, field);
762  break;
763  case MODE_PC_N:
764  match = checkmm(ctx, combs, match, fxo[mN], gen_frames, field);
765  break;
766  case MODE_PC_U:
767  match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field);
768  break;
769  case MODE_PC_N_UB:
770  match = checkmm(ctx, combs, match, fxo[mN], gen_frames, field);
771  match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field);
772  match = checkmm(ctx, combs, match, fxo[mB], gen_frames, field);
773  break;
774  /* 3-way p/c/n matches */
775  case MODE_PCN:
776  match = checkmm(ctx, combs, match, match == fxo[mP] ? fxo[mC] : fxo[mP], gen_frames, field);
777  break;
778  case MODE_PCN_UB:
779  match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field);
780  match = checkmm(ctx, combs, match, fxo[mB], gen_frames, field);
781  break;
782  default:
783  av_assert0(0);
784  }
785  }
786 
787  /* get output frame and drop the others */
788  if (fm->ppsrc) {
789  /* field matching was based on a filtered/post-processed input, we now
790  * pick the untouched fields from the clean source */
791  dst = create_weave_frame(ctx, match, field, fm->prv2, fm->src2, fm->nxt2);
792  } else {
793  if (!gen_frames[match]) { // XXX: is that possible?
794  dst = create_weave_frame(ctx, match, field, fm->prv, fm->src, fm->nxt);
795  } else {
796  dst = gen_frames[match];
797  gen_frames[match] = NULL;
798  }
799  }
800  if (!dst)
801  return AVERROR(ENOMEM);
802  for (i = 0; i < FF_ARRAY_ELEMS(gen_frames); i++)
803  av_frame_free(&gen_frames[i]);
804 
805  /* mark the frame we are unable to match properly as interlaced so a proper
806  * de-interlacer can take the relay */
807  dst->interlaced_frame = combs[match] >= fm->combpel;
808  if (dst->interlaced_frame) {
809  av_log(ctx, AV_LOG_WARNING, "Frame #%"PRId64" at %s is still interlaced\n",
810  outlink->frame_count, av_ts2timestr(in->pts, &inlink->time_base));
811  dst->top_field_first = field;
812  }
813 
814  av_log(ctx, AV_LOG_DEBUG, "SC:%d | COMBS: %3d %3d %3d %3d %3d (combpel=%d)"
815  " match=%d combed=%s\n", sc, combs[0], combs[1], combs[2], combs[3], combs[4],
816  fm->combpel, match, dst->interlaced_frame ? "YES" : "NO");
817 
818  return ff_filter_frame(outlink, dst);
819 }
820 
821 static int request_inlink(AVFilterContext *ctx, int lid)
822 {
823  int ret = 0;
824  FieldMatchContext *fm = ctx->priv;
825 
826  if (!fm->got_frame[lid]) {
827  AVFilterLink *inlink = ctx->inputs[lid];
828  ret = ff_request_frame(inlink);
829  if (ret == AVERROR_EOF) { // flushing
830  fm->eof |= 1 << lid;
831  ret = filter_frame(inlink, NULL);
832  }
833  }
834  return ret;
835 }
836 
837 static int request_frame(AVFilterLink *outlink)
838 {
839  int ret;
840  AVFilterContext *ctx = outlink->src;
841  FieldMatchContext *fm = ctx->priv;
842  const uint32_t eof_mask = 1<<INPUT_MAIN | fm->ppsrc<<INPUT_CLEANSRC;
843 
844  if ((fm->eof & eof_mask) == eof_mask) // flush done?
845  return AVERROR_EOF;
846  if ((ret = request_inlink(ctx, INPUT_MAIN)) < 0)
847  return ret;
848  if (fm->ppsrc && (ret = request_inlink(ctx, INPUT_CLEANSRC)) < 0)
849  return ret;
850  return 0;
851 }
852 
854 {
855  // TODO: second input source can support >8bit depth
856  static const enum AVPixelFormat pix_fmts[] = {
860  };
861  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
862  if (!fmts_list)
863  return AVERROR(ENOMEM);
864  return ff_set_common_formats(ctx, fmts_list);
865 }
866 
867 static int config_input(AVFilterLink *inlink)
868 {
869  int ret;
870  AVFilterContext *ctx = inlink->dst;
871  FieldMatchContext *fm = ctx->priv;
872  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
873  const int w = inlink->w;
874  const int h = inlink->h;
875 
876  fm->scthresh = (int64_t)((w * h * 255.0 * fm->scthresh_flt) / 100.0);
877 
878  if ((ret = av_image_alloc(fm->map_data, fm->map_linesize, w, h, inlink->format, 32)) < 0 ||
879  (ret = av_image_alloc(fm->cmask_data, fm->cmask_linesize, w, h, inlink->format, 32)) < 0)
880  return ret;
881 
882  fm->hsub = pix_desc->log2_chroma_w;
883  fm->vsub = pix_desc->log2_chroma_h;
884 
885  fm->tpitchy = FFALIGN(w, 16);
886  fm->tpitchuv = FFALIGN(w >> 1, 16);
887 
888  fm->tbuffer = av_malloc(h/2 * fm->tpitchy);
889  fm->c_array = av_malloc((((w + fm->blockx/2)/fm->blockx)+1) *
890  (((h + fm->blocky/2)/fm->blocky)+1) *
891  4 * sizeof(*fm->c_array));
892  if (!fm->tbuffer || !fm->c_array)
893  return AVERROR(ENOMEM);
894 
895  return 0;
896 }
897 
899 {
900  const FieldMatchContext *fm = ctx->priv;
901  AVFilterPad pad = {
902  .name = av_strdup("main"),
903  .type = AVMEDIA_TYPE_VIDEO,
904  .filter_frame = filter_frame,
905  .config_props = config_input,
906  };
907 
908  if (!pad.name)
909  return AVERROR(ENOMEM);
910  ff_insert_inpad(ctx, INPUT_MAIN, &pad);
911 
912  if (fm->ppsrc) {
913  pad.name = av_strdup("clean_src");
914  pad.config_props = NULL;
915  if (!pad.name)
916  return AVERROR(ENOMEM);
917  ff_insert_inpad(ctx, INPUT_CLEANSRC, &pad);
918  }
919 
920  if ((fm->blockx & (fm->blockx - 1)) ||
921  (fm->blocky & (fm->blocky - 1))) {
922  av_log(ctx, AV_LOG_ERROR, "blockx and blocky settings must be power of two\n");
923  return AVERROR(EINVAL);
924  }
925 
926  if (fm->combpel > fm->blockx * fm->blocky) {
927  av_log(ctx, AV_LOG_ERROR, "Combed pixel should not be larger than blockx x blocky\n");
928  return AVERROR(EINVAL);
929  }
930 
931  return 0;
932 }
933 
935 {
936  int i;
937  FieldMatchContext *fm = ctx->priv;
938 
939  if (fm->prv != fm->src)
940  av_frame_free(&fm->prv);
941  if (fm->nxt != fm->src)
942  av_frame_free(&fm->nxt);
943  av_frame_free(&fm->src);
944  av_freep(&fm->map_data[0]);
945  av_freep(&fm->cmask_data[0]);
946  av_freep(&fm->tbuffer);
947  av_freep(&fm->c_array);
948  for (i = 0; i < ctx->nb_inputs; i++)
949  av_freep(&ctx->input_pads[i].name);
950 }
951 
952 static int config_output(AVFilterLink *outlink)
953 {
954  AVFilterContext *ctx = outlink->src;
955  const FieldMatchContext *fm = ctx->priv;
956  const AVFilterLink *inlink =
957  ctx->inputs[fm->ppsrc ? INPUT_CLEANSRC : INPUT_MAIN];
958 
959  outlink->time_base = inlink->time_base;
960  outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
961  outlink->frame_rate = inlink->frame_rate;
962  outlink->w = inlink->w;
963  outlink->h = inlink->h;
964  return 0;
965 }
966 
967 static const AVFilterPad fieldmatch_outputs[] = {
968  {
969  .name = "default",
970  .type = AVMEDIA_TYPE_VIDEO,
971  .request_frame = request_frame,
972  .config_props = config_output,
973  },
974  { NULL }
975 };
976 
978  .name = "fieldmatch",
979  .description = NULL_IF_CONFIG_SMALL("Field matching for inverse telecine."),
980  .query_formats = query_formats,
981  .priv_size = sizeof(FieldMatchContext),
984  .inputs = NULL,
985  .outputs = fieldmatch_outputs,
986  .priv_class = &fieldmatch_class,
988 };
int plane
Definition: avisynth_c.h:422
comb_matching_mode
Definition: vf_fieldmatch.c:61
#define VERTICAL_HALF(y_start, y_end)
#define NULL
Definition: coverity.c:32
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2266
static av_always_inline void chroma(WaveformContext *s, AVFrame *in, AVFrame *out, int component, int intensity, int offset_y, int offset_x, int column, int mirror)
Definition: vf_waveform.c:1323
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
AVOption.
Definition: opt.h:245
#define LOAD_COMB(mid)
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
Main libavfilter public API header.
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int av_image_alloc(uint8_t *pointers[4], int linesizes[4], int w, int h, enum AVPixelFormat pix_fmt, int align)
Allocate an image with size w and h and pixel format pix_fmt, and fill pointers and linesizes accordi...
Definition: imgutils.c:191
int acc
Definition: yuv2rgb.c:546
static int get_width(const FieldMatchContext *fm, const AVFrame *f, int plane)
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
Definition: avfilter.h:105
static int get_field_base(int match, int field)
static int config_output(AVFilterLink *outlink)
static void fill_buf(uint8_t *data, int w, int h, int linesize, uint8_t v)
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:76
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
int combmatch
comb_matching_mode
Definition: vf_fieldmatch.c:95
#define INPUT_CLEANSRC
Definition: vf_fieldmatch.c:43
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
BYTE int const BYTE * srcp
Definition: avisynth_c.h:813
const char * name
Pad name.
Definition: internal.h:59
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:315
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1189
static AVFrame * create_weave_frame(AVFilterContext *ctx, int match, int field, const AVFrame *prv, AVFrame *src, const AVFrame *nxt)
uint8_t
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:337
mode
Definition: f_perms.c:27
AVOptions.
timestamp utils, mostly useful for debugging/logging purposes
static const AVOption fieldmatch_options[]
#define INPUT_MAIN
Definition: vf_fieldmatch.c:42
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:268
#define height
static const int fxo0m[]
static const uint64_t c1
Definition: murmur3.c:49
#define AVERROR_EOF
End of file.
Definition: error.h:55
uint8_t * map_data[4]
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:318
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:53
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:314
int width
width and height of the video frame
Definition: frame.h:236
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:568
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
#define s2
Definition: regdef.h:39
BYTE * dstp
Definition: avisynth_c.h:813
#define AVERROR(e)
Definition: error.h:43
static av_cold int fieldmatch_init(AVFilterContext *ctx)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:154
#define av_ts2timestr(ts, tb)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: timestamp.h:76
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
void * priv
private data for use by the filter
Definition: avfilter.h:322
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
simple assert() macros that are a bit more flexible than ISO C assert().
#define C_ARRAY_ADD(v)
GLsizei count
Definition: opengl_enc.c:109
#define FFMAX(a, b)
Definition: common.h:94
uint32_t eof
bitmask for end of stream
Definition: vf_fieldmatch.c:82
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
static int request_frame(AVFilterLink *outlink)
static int request_inlink(AVFilterContext *ctx, int lid)
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
static int compare_fields(FieldMatchContext *fm, int match1, int match2, int field)
unsigned nb_inputs
number of input pads
Definition: avfilter.h:316
#define FFMIN(a, b)
Definition: common.h:96
fieldmatch_parity
Definition: vf_fieldmatch.c:45
#define width
static const AVFilterPad fieldmatch_outputs[]
static AVFrame * select_frame(FieldMatchContext *fm, int match)
AVFrame * nxt
main sliding window of 3 frames
Definition: vf_fieldmatch.c:78
AVFormatContext * ctx
Definition: movenc.c:48
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
AVFILTER_DEFINE_CLASS(fieldmatch)
static const AVFilterPad outputs[]
Definition: af_afftfilt.c:386
#define src
Definition: vp9dsp.c:530
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:472
#define FF_ARRAY_ELEMS(a)
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)
Build a map over which pixels differ a lot/a little.
#define OFFSET(x)
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
AVFilter ff_vf_fieldmatch
static const AVFilterPad inputs[]
Definition: af_afftfilt.c:376
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:267
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
int got_frame[2]
frame request flag for each input stream
Definition: vf_fieldmatch.c:80
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
matching_mode
Definition: vf_fieldmatch.c:51
#define HAS_FF_AROUND(p, lz)
const char * name
Filter name.
Definition: avfilter.h:148
#define s1
Definition: regdef.h:38
#define u(width,...)
static const int fxo1m[]
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:319
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
static int flags
Definition: cpu.c:47
static int checkmm(AVFilterContext *ctx, int *combs, int m1, int m2, AVFrame **gen_frames, int field)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
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)
#define FF_INLINK_IDX(link)
Find the index of a link.
Definition: internal.h:353
#define SLIDING_FRAME_WINDOW(prv, src, nxt)
#define FILTER(xm2, xm1, xp1, xp2)
static int query_formats(AVFilterContext *ctx)
uint8_t * cmask_data[4]
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
static int config_input(AVFilterLink *inlink)
static av_cold void fieldmatch_uninit(AVFilterContext *ctx)
static const uint64_t c2
Definition: murmur3.c:50
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:69
static void copy_fields(const FieldMatchContext *fm, AVFrame *dst, const AVFrame *src, int field)
static int64_t luma_abs_diff(const AVFrame *f1, const AVFrame *f2)
static av_always_inline int diff(const uint32_t a, const uint32_t b)
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:323
int mode
matching_mode
Definition: vf_fieldmatch.c:89
A list of supported formats for one end of a filter link.
Definition: formats.h:64
AVFrame * nxt2
sliding window of the optional second stream
Definition: vf_fieldmatch.c:79
static int calc_combed_score(const FieldMatchContext *fm, const AVFrame *src)
int vsub
chroma subsampling values
Definition: vf_fieldmatch.c:81
An instance of a filter.
Definition: avfilter.h:307
int height
Definition: frame.h:236
#define av_freep(p)
int(* config_props)(AVFilterLink *link)
Link configuration callback.
Definition: internal.h:128
int ff_request_frame(AVFilterLink *link)
Request an input frame from the filter at the other end of the link.
Definition: avfilter.c:369
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:287
comb_dbg
Definition: vf_fieldmatch.c:68
internal API functions
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
static int get_height(const FieldMatchContext *fm, const AVFrame *f, int plane)
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:581
#define FLAGS
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
static int ff_insert_inpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new input pad for the filter.
Definition: internal.h:283