FFmpeg
vf_w3fdif.c
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1 /*
2  * Copyright (C) 2012 British Broadcasting Corporation, All Rights Reserved
3  * Author of de-interlace algorithm: Jim Easterbrook for BBC R&D
4  * Based on the process described by Martin Weston for BBC R&D
5  * Author of FFmpeg filter: Mark Himsley for BBC Broadcast Systems Development
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #include "libavutil/common.h"
25 #include "libavutil/imgutils.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "avfilter.h"
29 #include "formats.h"
30 #include "internal.h"
31 #include "video.h"
32 #include "w3fdif.h"
33 
34 typedef struct W3FDIFContext {
35  const AVClass *class;
36  int filter; ///< 0 is simple, 1 is more complex
37  int mode; ///< 0 is frame, 1 is field
38  int parity; ///< frame field parity
39  int deint; ///< which frames to deinterlace
40  int linesize[4]; ///< bytes of pixel data per line for each plane
41  int planeheight[4]; ///< height of each plane
42  int field; ///< which field are we on, 0 or 1
43  int eof;
44  int nb_planes;
45  AVFrame *prev, *cur, *next; ///< previous, current, next frames
46  int32_t **work_line; ///< lines we are calculating
48  int max;
49 
52 
53 #define OFFSET(x) offsetof(W3FDIFContext, x)
54 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
55 #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit }
56 
57 static const AVOption w3fdif_options[] = {
58  { "filter", "specify the filter", OFFSET(filter), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "filter" },
59  CONST("simple", NULL, 0, "filter"),
60  CONST("complex", NULL, 1, "filter"),
61  { "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "mode"},
62  CONST("frame", "send one frame for each frame", 0, "mode"),
63  CONST("field", "send one frame for each field", 1, "mode"),
64  { "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=-1}, -1, 1, FLAGS, "parity" },
65  CONST("tff", "assume top field first", 0, "parity"),
66  CONST("bff", "assume bottom field first", 1, "parity"),
67  CONST("auto", "auto detect parity", -1, "parity"),
68  { "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "deint" },
69  CONST("all", "deinterlace all frames", 0, "deint"),
70  CONST("interlaced", "only deinterlace frames marked as interlaced", 1, "deint"),
71  { NULL }
72 };
73 
74 AVFILTER_DEFINE_CLASS(w3fdif);
75 
76 static const enum AVPixelFormat pix_fmts[] = {
100 };
101 
102 static void filter_simple_low(int32_t *work_line,
103  uint8_t *in_lines_cur[2],
104  const int16_t *coef, int linesize)
105 {
106  int i;
107 
108  for (i = 0; i < linesize; i++) {
109  *work_line = *in_lines_cur[0]++ * coef[0];
110  *work_line++ += *in_lines_cur[1]++ * coef[1];
111  }
112 }
113 
114 static void filter_complex_low(int32_t *work_line,
115  uint8_t *in_lines_cur[4],
116  const int16_t *coef, int linesize)
117 {
118  int i;
119 
120  for (i = 0; i < linesize; i++) {
121  *work_line = *in_lines_cur[0]++ * coef[0];
122  *work_line += *in_lines_cur[1]++ * coef[1];
123  *work_line += *in_lines_cur[2]++ * coef[2];
124  *work_line++ += *in_lines_cur[3]++ * coef[3];
125  }
126 }
127 
128 static void filter_simple_high(int32_t *work_line,
129  uint8_t *in_lines_cur[3],
130  uint8_t *in_lines_adj[3],
131  const int16_t *coef, int linesize)
132 {
133  int i;
134 
135  for (i = 0; i < linesize; i++) {
136  *work_line += *in_lines_cur[0]++ * coef[0];
137  *work_line += *in_lines_adj[0]++ * coef[0];
138  *work_line += *in_lines_cur[1]++ * coef[1];
139  *work_line += *in_lines_adj[1]++ * coef[1];
140  *work_line += *in_lines_cur[2]++ * coef[2];
141  *work_line++ += *in_lines_adj[2]++ * coef[2];
142  }
143 }
144 
145 static void filter_complex_high(int32_t *work_line,
146  uint8_t *in_lines_cur[5],
147  uint8_t *in_lines_adj[5],
148  const int16_t *coef, int linesize)
149 {
150  int i;
151 
152  for (i = 0; i < linesize; i++) {
153  *work_line += *in_lines_cur[0]++ * coef[0];
154  *work_line += *in_lines_adj[0]++ * coef[0];
155  *work_line += *in_lines_cur[1]++ * coef[1];
156  *work_line += *in_lines_adj[1]++ * coef[1];
157  *work_line += *in_lines_cur[2]++ * coef[2];
158  *work_line += *in_lines_adj[2]++ * coef[2];
159  *work_line += *in_lines_cur[3]++ * coef[3];
160  *work_line += *in_lines_adj[3]++ * coef[3];
161  *work_line += *in_lines_cur[4]++ * coef[4];
162  *work_line++ += *in_lines_adj[4]++ * coef[4];
163  }
164 }
165 
166 static void filter_scale(uint8_t *out_pixel, const int32_t *work_pixel, int linesize, int max)
167 {
168  int j;
169 
170  for (j = 0; j < linesize; j++, out_pixel++, work_pixel++)
171  *out_pixel = av_clip(*work_pixel, 0, 255 * 256 * 128) >> 15;
172 }
173 
174 static void filter16_simple_low(int32_t *work_line,
175  uint8_t *in_lines_cur8[2],
176  const int16_t *coef, int linesize)
177 {
178  uint16_t *in_lines_cur[2] = { (uint16_t *)in_lines_cur8[0], (uint16_t *)in_lines_cur8[1] };
179  int i;
180 
181  linesize /= 2;
182  for (i = 0; i < linesize; i++) {
183  *work_line = *in_lines_cur[0]++ * coef[0];
184  *work_line++ += *in_lines_cur[1]++ * coef[1];
185  }
186 }
187 
188 static void filter16_complex_low(int32_t *work_line,
189  uint8_t *in_lines_cur8[4],
190  const int16_t *coef, int linesize)
191 {
192  uint16_t *in_lines_cur[4] = { (uint16_t *)in_lines_cur8[0],
193  (uint16_t *)in_lines_cur8[1],
194  (uint16_t *)in_lines_cur8[2],
195  (uint16_t *)in_lines_cur8[3] };
196  int i;
197 
198  linesize /= 2;
199  for (i = 0; i < linesize; i++) {
200  *work_line = *in_lines_cur[0]++ * coef[0];
201  *work_line += *in_lines_cur[1]++ * coef[1];
202  *work_line += *in_lines_cur[2]++ * coef[2];
203  *work_line++ += *in_lines_cur[3]++ * coef[3];
204  }
205 }
206 
207 static void filter16_simple_high(int32_t *work_line,
208  uint8_t *in_lines_cur8[3],
209  uint8_t *in_lines_adj8[3],
210  const int16_t *coef, int linesize)
211 {
212  uint16_t *in_lines_cur[3] = { (uint16_t *)in_lines_cur8[0],
213  (uint16_t *)in_lines_cur8[1],
214  (uint16_t *)in_lines_cur8[2] };
215  uint16_t *in_lines_adj[3] = { (uint16_t *)in_lines_adj8[0],
216  (uint16_t *)in_lines_adj8[1],
217  (uint16_t *)in_lines_adj8[2] };
218  int i;
219 
220  linesize /= 2;
221  for (i = 0; i < linesize; i++) {
222  *work_line += *in_lines_cur[0]++ * coef[0];
223  *work_line += *in_lines_adj[0]++ * coef[0];
224  *work_line += *in_lines_cur[1]++ * coef[1];
225  *work_line += *in_lines_adj[1]++ * coef[1];
226  *work_line += *in_lines_cur[2]++ * coef[2];
227  *work_line++ += *in_lines_adj[2]++ * coef[2];
228  }
229 }
230 
231 static void filter16_complex_high(int32_t *work_line,
232  uint8_t *in_lines_cur8[5],
233  uint8_t *in_lines_adj8[5],
234  const int16_t *coef, int linesize)
235 {
236  uint16_t *in_lines_cur[5] = { (uint16_t *)in_lines_cur8[0],
237  (uint16_t *)in_lines_cur8[1],
238  (uint16_t *)in_lines_cur8[2],
239  (uint16_t *)in_lines_cur8[3],
240  (uint16_t *)in_lines_cur8[4] };
241  uint16_t *in_lines_adj[5] = { (uint16_t *)in_lines_adj8[0],
242  (uint16_t *)in_lines_adj8[1],
243  (uint16_t *)in_lines_adj8[2],
244  (uint16_t *)in_lines_adj8[3],
245  (uint16_t *)in_lines_adj8[4] };
246  int i;
247 
248  linesize /= 2;
249  for (i = 0; i < linesize; i++) {
250  *work_line += *in_lines_cur[0]++ * coef[0];
251  *work_line += *in_lines_adj[0]++ * coef[0];
252  *work_line += *in_lines_cur[1]++ * coef[1];
253  *work_line += *in_lines_adj[1]++ * coef[1];
254  *work_line += *in_lines_cur[2]++ * coef[2];
255  *work_line += *in_lines_adj[2]++ * coef[2];
256  *work_line += *in_lines_cur[3]++ * coef[3];
257  *work_line += *in_lines_adj[3]++ * coef[3];
258  *work_line += *in_lines_cur[4]++ * coef[4];
259  *work_line++ += *in_lines_adj[4]++ * coef[4];
260  }
261 }
262 
263 static void filter16_scale(uint8_t *out_pixel8, const int32_t *work_pixel, int linesize, int max)
264 {
265  uint16_t *out_pixel = (uint16_t *)out_pixel8;
266  int j;
267 
268  linesize /= 2;
269  for (j = 0; j < linesize; j++, out_pixel++, work_pixel++)
270  *out_pixel = av_clip(*work_pixel, 0, max) >> 15;
271 }
272 
274 {
275  AVFilterContext *ctx = inlink->dst;
276  W3FDIFContext *s = ctx->priv;
278  int ret, i, depth, nb_threads;
279 
280  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
281  return ret;
282 
283  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
284  s->planeheight[0] = s->planeheight[3] = inlink->h;
285 
286  if (inlink->h < 3) {
287  av_log(ctx, AV_LOG_ERROR, "Video of less than 3 lines is not supported\n");
288  return AVERROR(EINVAL);
289  }
290 
291  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
292  nb_threads = ff_filter_get_nb_threads(ctx);
293  s->work_line = av_calloc(nb_threads, sizeof(*s->work_line));
294  if (!s->work_line)
295  return AVERROR(ENOMEM);
296  s->nb_threads = nb_threads;
297 
298  for (i = 0; i < s->nb_threads; i++) {
299  s->work_line[i] = av_calloc(FFALIGN(s->linesize[0], 32), sizeof(*s->work_line[0]));
300  if (!s->work_line[i])
301  return AVERROR(ENOMEM);
302  }
303 
304  depth = desc->comp[0].depth;
305  s->max = ((1 << depth) - 1) * 256 * 128;
306  if (depth <= 8) {
307  s->dsp.filter_simple_low = filter_simple_low;
308  s->dsp.filter_complex_low = filter_complex_low;
309  s->dsp.filter_simple_high = filter_simple_high;
310  s->dsp.filter_complex_high = filter_complex_high;
311  s->dsp.filter_scale = filter_scale;
312  } else {
313  s->dsp.filter_simple_low = filter16_simple_low;
314  s->dsp.filter_complex_low = filter16_complex_low;
315  s->dsp.filter_simple_high = filter16_simple_high;
316  s->dsp.filter_complex_high = filter16_complex_high;
317  s->dsp.filter_scale = filter16_scale;
318  }
319 
320  if (ARCH_X86)
321  ff_w3fdif_init_x86(&s->dsp, depth);
322 
323  return 0;
324 }
325 
326 static int config_output(AVFilterLink *outlink)
327 {
328  AVFilterLink *inlink = outlink->src->inputs[0];
329 
330  outlink->time_base = av_mul_q(inlink->time_base, (AVRational){1, 2});
331  outlink->frame_rate = av_mul_q(inlink->frame_rate, (AVRational){2, 1});
332 
333  return 0;
334 }
335 
336 /*
337  * Filter coefficients from PH-2071, scaled by 256 * 128.
338  * Each set of coefficients has a set for low-frequencies and high-frequencies.
339  * n_coef_lf[] and n_coef_hf[] are the number of coefs for simple and more-complex.
340  * It is important for later that n_coef_lf[] is even and n_coef_hf[] is odd.
341  * coef_lf[][] and coef_hf[][] are the coefficients for low-frequencies
342  * and high-frequencies for simple and more-complex mode.
343  */
344 static const int8_t n_coef_lf[2] = { 2, 4 };
345 static const int16_t coef_lf[2][4] = {{ 16384, 16384, 0, 0},
346  { -852, 17236, 17236, -852}};
347 static const int8_t n_coef_hf[2] = { 3, 5 };
348 static const int16_t coef_hf[2][5] = {{ -2048, 4096, -2048, 0, 0},
349  { 1016, -3801, 5570, -3801, 1016}};
350 
351 typedef struct ThreadData {
353 } ThreadData;
354 
356  int jobnr, int nb_jobs, int plane)
357 {
358  W3FDIFContext *s = ctx->priv;
359  ThreadData *td = arg;
360  AVFrame *out = td->out;
361  AVFrame *cur = td->cur;
362  AVFrame *adj = td->adj;
363  const int filter = s->filter;
364  uint8_t *in_line, *in_lines_cur[5], *in_lines_adj[5];
365  uint8_t *out_line, *out_pixel;
366  int32_t *work_line, *work_pixel;
367  uint8_t *cur_data = cur->data[plane];
368  uint8_t *adj_data = adj->data[plane];
369  uint8_t *dst_data = out->data[plane];
370  const int linesize = s->linesize[plane];
371  const int height = s->planeheight[plane];
372  const int cur_line_stride = cur->linesize[plane];
373  const int adj_line_stride = adj->linesize[plane];
374  const int dst_line_stride = out->linesize[plane];
375  const int start = (height * jobnr) / nb_jobs;
376  const int end = (height * (jobnr+1)) / nb_jobs;
377  const int max = s->max;
378  const int interlaced = cur->interlaced_frame;
379  const int tff = s->field == (s->parity == -1 ? interlaced ? cur->top_field_first : 1 :
380  s->parity ^ 1);
381  int j, y_in, y_out;
382 
383  /* copy unchanged the lines of the field */
384  y_out = start + (tff ^ (start & 1));
385 
386  in_line = cur_data + (y_out * cur_line_stride);
387  out_line = dst_data + (y_out * dst_line_stride);
388 
389  while (y_out < end) {
390  memcpy(out_line, in_line, linesize);
391  y_out += 2;
392  in_line += cur_line_stride * 2;
393  out_line += dst_line_stride * 2;
394  }
395 
396  /* interpolate other lines of the field */
397  y_out = start + ((!tff) ^ (start & 1));
398 
399  out_line = dst_data + (y_out * dst_line_stride);
400 
401  while (y_out < end) {
402  /* get low vertical frequencies from current field */
403  for (j = 0; j < n_coef_lf[filter]; j++) {
404  y_in = (y_out + 1) + (j * 2) - n_coef_lf[filter];
405 
406  while (y_in < 0)
407  y_in += 2;
408  while (y_in >= height)
409  y_in -= 2;
410 
411  in_lines_cur[j] = cur_data + (y_in * cur_line_stride);
412  }
413 
414  work_line = s->work_line[jobnr];
415  switch (n_coef_lf[filter]) {
416  case 2:
417  s->dsp.filter_simple_low(work_line, in_lines_cur,
418  coef_lf[filter], linesize);
419  break;
420  case 4:
421  s->dsp.filter_complex_low(work_line, in_lines_cur,
422  coef_lf[filter], linesize);
423  }
424 
425  /* get high vertical frequencies from adjacent fields */
426  for (j = 0; j < n_coef_hf[filter]; j++) {
427  y_in = (y_out + 1) + (j * 2) - n_coef_hf[filter];
428 
429  while (y_in < 0)
430  y_in += 2;
431  while (y_in >= height)
432  y_in -= 2;
433 
434  in_lines_cur[j] = cur_data + (y_in * cur_line_stride);
435  in_lines_adj[j] = adj_data + (y_in * adj_line_stride);
436  }
437 
438  work_line = s->work_line[jobnr];
439  switch (n_coef_hf[filter]) {
440  case 3:
441  s->dsp.filter_simple_high(work_line, in_lines_cur, in_lines_adj,
442  coef_hf[filter], linesize);
443  break;
444  case 5:
445  s->dsp.filter_complex_high(work_line, in_lines_cur, in_lines_adj,
446  coef_hf[filter], linesize);
447  }
448 
449  /* save scaled result to the output frame, scaling down by 256 * 128 */
450  work_pixel = s->work_line[jobnr];
451  out_pixel = out_line;
452 
453  s->dsp.filter_scale(out_pixel, work_pixel, linesize, max);
454 
455  /* move on to next line */
456  y_out += 2;
457  out_line += dst_line_stride * 2;
458  }
459 
460  return 0;
461 }
462 
464  int jobnr, int nb_jobs)
465 {
466  W3FDIFContext *s = ctx->priv;
467 
468  for (int p = 0; p < s->nb_planes; p++)
469  deinterlace_plane_slice(ctx, arg, jobnr, nb_jobs, p);
470 
471  return 0;
472 }
473 
474 static int filter(AVFilterContext *ctx, int is_second)
475 {
476  W3FDIFContext *s = ctx->priv;
477  AVFilterLink *outlink = ctx->outputs[0];
478  AVFrame *out, *adj;
479  ThreadData td;
480 
481  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
482  if (!out)
483  return AVERROR(ENOMEM);
484  av_frame_copy_props(out, s->cur);
485  out->interlaced_frame = 0;
486 
487  if (!is_second) {
488  if (out->pts != AV_NOPTS_VALUE)
489  out->pts *= 2;
490  } else {
491  int64_t cur_pts = s->cur->pts;
492  int64_t next_pts = s->next->pts;
493 
494  if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) {
495  out->pts = cur_pts + next_pts;
496  } else {
497  out->pts = AV_NOPTS_VALUE;
498  }
499  }
500 
501  adj = s->field ? s->next : s->prev;
502  td.out = out; td.cur = s->cur; td.adj = adj;
504  FFMIN(s->planeheight[1], s->nb_threads));
505 
506  if (s->mode)
507  s->field = !s->field;
508 
509  return ff_filter_frame(outlink, out);
510 }
511 
513 {
514  AVFilterContext *ctx = inlink->dst;
515  W3FDIFContext *s = ctx->priv;
516  int ret;
517 
518  av_frame_free(&s->prev);
519  s->prev = s->cur;
520  s->cur = s->next;
521  s->next = frame;
522 
523  if (!s->cur) {
524  s->cur = av_frame_clone(s->next);
525  if (!s->cur)
526  return AVERROR(ENOMEM);
527  }
528 
529  if (!s->prev)
530  return 0;
531 
532  if ((s->deint && !s->cur->interlaced_frame) || ctx->is_disabled) {
533  AVFrame *out = av_frame_clone(s->cur);
534  if (!out)
535  return AVERROR(ENOMEM);
536 
537  av_frame_free(&s->prev);
538  if (out->pts != AV_NOPTS_VALUE)
539  out->pts *= 2;
540  return ff_filter_frame(ctx->outputs[0], out);
541  }
542 
543  ret = filter(ctx, 0);
544  if (ret < 0 || s->mode == 0)
545  return ret;
546 
547  return filter(ctx, 1);
548 }
549 
550 static int request_frame(AVFilterLink *outlink)
551 {
552  AVFilterContext *ctx = outlink->src;
553  W3FDIFContext *s = ctx->priv;
554  int ret;
555 
556  if (s->eof)
557  return AVERROR_EOF;
558 
559  ret = ff_request_frame(ctx->inputs[0]);
560 
561  if (ret == AVERROR_EOF && s->cur) {
562  AVFrame *next = av_frame_clone(s->next);
563  if (!next)
564  return AVERROR(ENOMEM);
565  next->pts = s->next->pts * 2 - s->cur->pts;
566  filter_frame(ctx->inputs[0], next);
567  s->eof = 1;
568  } else if (ret < 0) {
569  return ret;
570  }
571 
572  return 0;
573 }
574 
576 {
577  W3FDIFContext *s = ctx->priv;
578  int i;
579 
580  av_frame_free(&s->prev);
581  av_frame_free(&s->cur );
582  av_frame_free(&s->next);
583 
584  for (i = 0; i < s->nb_threads; i++)
585  av_freep(&s->work_line[i]);
586 
587  av_freep(&s->work_line);
588 }
589 
590 static const AVFilterPad w3fdif_inputs[] = {
591  {
592  .name = "default",
593  .type = AVMEDIA_TYPE_VIDEO,
594  .filter_frame = filter_frame,
595  .config_props = config_input,
596  },
597 };
598 
599 static const AVFilterPad w3fdif_outputs[] = {
600  {
601  .name = "default",
602  .type = AVMEDIA_TYPE_VIDEO,
603  .config_props = config_output,
604  .request_frame = request_frame,
605  },
606 };
607 
609  .name = "w3fdif",
610  .description = NULL_IF_CONFIG_SMALL("Apply Martin Weston three field deinterlace."),
611  .priv_size = sizeof(W3FDIFContext),
612  .priv_class = &w3fdif_class,
613  .uninit = uninit,
618  .process_command = ff_filter_process_command,
619 };
W3FDIFContext::linesize
int linesize[4]
bytes of pixel data per line for each plane
Definition: vf_w3fdif.c:40
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:98
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:434
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:413
W3FDIFContext::parity
int parity
frame field parity
Definition: vf_w3fdif.c:38
td
#define td
Definition: regdef.h:70
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
av_clip
#define av_clip
Definition: common.h:96
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
out
FILE * out
Definition: movenc.c:54
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1018
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2564
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:57
W3FDIFContext::max
int max
Definition: vf_w3fdif.c:48
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:171
ff_w3fdif_init_x86
void ff_w3fdif_init_x86(W3FDIFDSPContext *dsp, int depth)
Definition: vf_w3fdif_init.c:48
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:426
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:396
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:433
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:428
AVFrame::top_field_first
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:438
AVOption
AVOption.
Definition: opt.h:247
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:391
ff_request_frame
int ff_request_frame(AVFilterLink *link)
Request an input frame from the filter at the other end of the link.
Definition: avfilter.c:420
request_frame
static int request_frame(AVFilterLink *outlink)
Definition: vf_w3fdif.c:550
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
max
#define max(a, b)
Definition: cuda_runtime.h:33
CONST
#define CONST(name, help, val, unit)
Definition: vf_w3fdif.c:55
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:153
ThreadData::out
AVFrame * out
Definition: af_adeclick.c:473
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:429
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:371
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
formats.h
W3FDIFContext::filter
int filter
0 is simple, 1 is more complex
Definition: vf_w3fdif.c:36
coef_hf
static const int16_t coef_hf[2][5]
Definition: vf_w3fdif.c:348
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2604
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:425
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:409
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:205
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:407
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:435
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:389
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:375
w3fdif_outputs
static const AVFilterPad w3fdif_outputs[]
Definition: vf_w3fdif.c:599
W3FDIFContext::prev
AVFrame * prev
Definition: vf_w3fdif.c:45
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:394
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_w3fdif.c:273
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:248
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_w3fdif.c:575
filter16_scale
static void filter16_scale(uint8_t *out_pixel8, const int32_t *work_pixel, int linesize, int max)
Definition: vf_w3fdif.c:263
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_w3fdif.c:76
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:403
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:411
av_image_fill_linesizes
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:89
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:412
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
W3FDIFContext::cur
AVFrame * cur
Definition: vf_w3fdif.c:45
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:404
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
deinterlace_slice
static int deinterlace_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_w3fdif.c:463
filter_simple_high
static void filter_simple_high(int32_t *work_line, uint8_t *in_lines_cur[3], uint8_t *in_lines_adj[3], const int16_t *coef, int linesize)
Definition: vf_w3fdif.c:128
coef_lf
static const int16_t coef_lf[2][4]
Definition: vf_w3fdif.c:345
W3FDIFContext::dsp
W3FDIFDSPContext dsp
Definition: vf_w3fdif.c:50
W3FDIFContext
Definition: vf_w3fdif.c:34
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:432
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:388
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:402
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:374
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:424
filter_complex_low
static void filter_complex_low(int32_t *work_line, uint8_t *in_lines_cur[4], const int16_t *coef, int linesize)
Definition: vf_w3fdif.c:114
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:191
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
arg
const char * arg
Definition: jacosubdec.c:67
W3FDIFDSPContext
Definition: w3fdif.h:27
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:372
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:410
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:537
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
AVFilterContext::inputs
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:394
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:393
W3FDIFContext::eof
int eof
Definition: vf_w3fdif.c:43
W3FDIFContext::work_line
int32_t ** work_line
lines we are calculating
Definition: vf_w3fdif.c:46
w3fdif.h
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:392
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:406
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
Definition: vf_w3fdif.c:512
W3FDIFContext::deint
int deint
which frames to deinterlace
Definition: vf_w3fdif.c:39
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_w3fdif.c:326
w3fdif_inputs
static const AVFilterPad w3fdif_inputs[]
Definition: vf_w3fdif.c:590
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(w3fdif)
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:396
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
parity
mcdeint parity
Definition: vf_mcdeint.c:266
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:398
filter16_complex_high
static void filter16_complex_high(int32_t *work_line, uint8_t *in_lines_cur8[5], uint8_t *in_lines_adj8[5], const int16_t *coef, int linesize)
Definition: vf_w3fdif.c:231
filter_scale
static void filter_scale(uint8_t *out_pixel, const int32_t *work_pixel, int linesize, int max)
Definition: vf_w3fdif.c:166
ff_filter_process_command
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
Definition: avfilter.c:882
filter_simple_low
static void filter_simple_low(int32_t *work_line, uint8_t *in_lines_cur[2], const int16_t *coef, int linesize)
Definition: vf_w3fdif.c:102
height
#define height
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:167
ThreadData::adj
AVFrame * adj
Definition: vf_w3fdif.c:352
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:430
w3fdif_options
static const AVOption w3fdif_options[]
Definition: vf_w3fdif.c:57
internal.h
FLAGS
#define FLAGS
Definition: vf_w3fdif.c:54
ff_vf_w3fdif
const AVFilter ff_vf_w3fdif
Definition: vf_w3fdif.c:608
AVFrame::interlaced_frame
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:433
interlaced
uint8_t interlaced
Definition: mxfenc.c:2207
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
W3FDIFContext::nb_planes
int nb_planes
Definition: vf_w3fdif.c:44
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:408
common.h
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:803
ThreadData
Used for passing data between threads.
Definition: dsddec.c:67
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:271
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:390
AVFilter
Filter definition.
Definition: avfilter.h:149
ThreadData::cur
AVFrame * cur
Definition: vf_w3fdif.c:352
ret
ret
Definition: filter_design.txt:187
W3FDIFContext::field
int field
which field are we on, 0 or 1
Definition: vf_w3fdif.c:42
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:427
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:395
W3FDIFContext::planeheight
int planeheight[4]
height of each plane
Definition: vf_w3fdif.c:41
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:400
filter16_complex_low
static void filter16_complex_low(int32_t *work_line, uint8_t *in_lines_cur8[4], const int16_t *coef, int linesize)
Definition: vf_w3fdif.c:188
filter16_simple_high
static void filter16_simple_high(int32_t *work_line, uint8_t *in_lines_cur8[3], uint8_t *in_lines_adj8[3], const int16_t *coef, int linesize)
Definition: vf_w3fdif.c:207
mode
mode
Definition: ebur128.h:83
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
W3FDIFContext::next
AVFrame * next
previous, current, next frames
Definition: vf_w3fdif.c:45
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:431
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
filter16_simple_low
static void filter16_simple_low(int32_t *work_line, uint8_t *in_lines_cur8[2], const int16_t *coef, int linesize)
Definition: vf_w3fdif.c:174
filter_complex_high
static void filter_complex_high(int32_t *work_line, uint8_t *in_lines_cur[5], uint8_t *in_lines_adj[5], const int16_t *coef, int linesize)
Definition: vf_w3fdif.c:145
W3FDIFContext::mode
int mode
0 is frame, 1 is field
Definition: vf_w3fdif.c:37
av_mul_q
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
n_coef_lf
static const int8_t n_coef_lf[2]
Definition: vf_w3fdif.c:344
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:386
filter
static int filter(AVFilterContext *ctx, int is_second)
Definition: vf_w3fdif.c:474
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:121
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
deinterlace_plane_slice
static int deinterlace_plane_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs, int plane)
Definition: vf_w3fdif.c:355
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
int32_t
int32_t
Definition: audioconvert.c:56
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:138
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
W3FDIFContext::nb_threads
int nb_threads
Definition: vf_w3fdif.c:47
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:397
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:401
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:373
ff_filter_execute
static av_always_inline int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: internal.h:143
n_coef_hf
static const int8_t n_coef_hf[2]
Definition: vf_w3fdif.c:347
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:166
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:399
OFFSET
#define OFFSET(x)
Definition: vf_w3fdif.c:53