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 #endif
323 
324  return 0;
325 }
326 
327 static int config_output(AVFilterLink *outlink)
328 {
329  AVFilterContext *ctx = outlink->src;
330  AVFilterLink *inlink = ctx->inputs[0];
331  W3FDIFContext *s = ctx->priv;
332 
333  outlink->time_base = av_mul_q(inlink->time_base, (AVRational){1, 2});
334  if (s->mode)
335  outlink->frame_rate = av_mul_q(inlink->frame_rate, (AVRational){2, 1});
336 
337  return 0;
338 }
339 
340 /*
341  * Filter coefficients from PH-2071, scaled by 256 * 128.
342  * Each set of coefficients has a set for low-frequencies and high-frequencies.
343  * n_coef_lf[] and n_coef_hf[] are the number of coefs for simple and more-complex.
344  * It is important for later that n_coef_lf[] is even and n_coef_hf[] is odd.
345  * coef_lf[][] and coef_hf[][] are the coefficients for low-frequencies
346  * and high-frequencies for simple and more-complex mode.
347  */
348 static const int8_t n_coef_lf[2] = { 2, 4 };
349 static const int16_t coef_lf[2][4] = {{ 16384, 16384, 0, 0},
350  { -852, 17236, 17236, -852}};
351 static const int8_t n_coef_hf[2] = { 3, 5 };
352 static const int16_t coef_hf[2][5] = {{ -2048, 4096, -2048, 0, 0},
353  { 1016, -3801, 5570, -3801, 1016}};
354 
355 typedef struct ThreadData {
357 } ThreadData;
358 
360  int jobnr, int nb_jobs, int plane)
361 {
362  W3FDIFContext *s = ctx->priv;
363  ThreadData *td = arg;
364  AVFrame *out = td->out;
365  AVFrame *cur = td->cur;
366  AVFrame *adj = td->adj;
367  const int filter = s->filter;
368  uint8_t *in_line, *in_lines_cur[5], *in_lines_adj[5];
369  uint8_t *out_line, *out_pixel;
370  int32_t *work_line, *work_pixel;
371  uint8_t *cur_data = cur->data[plane];
372  uint8_t *adj_data = adj->data[plane];
373  uint8_t *dst_data = out->data[plane];
374  const int linesize = s->linesize[plane];
375  const int height = s->planeheight[plane];
376  const int cur_line_stride = cur->linesize[plane];
377  const int adj_line_stride = adj->linesize[plane];
378  const int dst_line_stride = out->linesize[plane];
379  const int start = (height * jobnr) / nb_jobs;
380  const int end = (height * (jobnr+1)) / nb_jobs;
381  const int max = s->max;
382  const int interlaced = cur->interlaced_frame;
383  const int tff = s->field == (s->parity == -1 ? interlaced ? cur->top_field_first : 1 :
384  s->parity ^ 1);
385  int j, y_in, y_out;
386 
387  /* copy unchanged the lines of the field */
388  y_out = start + (tff ^ (start & 1));
389 
390  in_line = cur_data + (y_out * cur_line_stride);
391  out_line = dst_data + (y_out * dst_line_stride);
392 
393  while (y_out < end) {
394  memcpy(out_line, in_line, linesize);
395  y_out += 2;
396  in_line += cur_line_stride * 2;
397  out_line += dst_line_stride * 2;
398  }
399 
400  /* interpolate other lines of the field */
401  y_out = start + ((!tff) ^ (start & 1));
402 
403  out_line = dst_data + (y_out * dst_line_stride);
404 
405  while (y_out < end) {
406  /* get low vertical frequencies from current field */
407  for (j = 0; j < n_coef_lf[filter]; j++) {
408  y_in = (y_out + 1) + (j * 2) - n_coef_lf[filter];
409 
410  while (y_in < 0)
411  y_in += 2;
412  while (y_in >= height)
413  y_in -= 2;
414 
415  in_lines_cur[j] = cur_data + (y_in * cur_line_stride);
416  }
417 
418  work_line = s->work_line[jobnr];
419  switch (n_coef_lf[filter]) {
420  case 2:
421  s->dsp.filter_simple_low(work_line, in_lines_cur,
422  coef_lf[filter], linesize);
423  break;
424  case 4:
425  s->dsp.filter_complex_low(work_line, in_lines_cur,
426  coef_lf[filter], linesize);
427  }
428 
429  /* get high vertical frequencies from adjacent fields */
430  for (j = 0; j < n_coef_hf[filter]; j++) {
431  y_in = (y_out + 1) + (j * 2) - n_coef_hf[filter];
432 
433  while (y_in < 0)
434  y_in += 2;
435  while (y_in >= height)
436  y_in -= 2;
437 
438  in_lines_cur[j] = cur_data + (y_in * cur_line_stride);
439  in_lines_adj[j] = adj_data + (y_in * adj_line_stride);
440  }
441 
442  work_line = s->work_line[jobnr];
443  switch (n_coef_hf[filter]) {
444  case 3:
445  s->dsp.filter_simple_high(work_line, in_lines_cur, in_lines_adj,
446  coef_hf[filter], linesize);
447  break;
448  case 5:
449  s->dsp.filter_complex_high(work_line, in_lines_cur, in_lines_adj,
450  coef_hf[filter], linesize);
451  }
452 
453  /* save scaled result to the output frame, scaling down by 256 * 128 */
454  work_pixel = s->work_line[jobnr];
455  out_pixel = out_line;
456 
457  s->dsp.filter_scale(out_pixel, work_pixel, linesize, max);
458 
459  /* move on to next line */
460  y_out += 2;
461  out_line += dst_line_stride * 2;
462  }
463 
464  return 0;
465 }
466 
468  int jobnr, int nb_jobs)
469 {
470  W3FDIFContext *s = ctx->priv;
471 
472  for (int p = 0; p < s->nb_planes; p++)
473  deinterlace_plane_slice(ctx, arg, jobnr, nb_jobs, p);
474 
475  return 0;
476 }
477 
478 static int filter(AVFilterContext *ctx, int is_second)
479 {
480  W3FDIFContext *s = ctx->priv;
481  AVFilterLink *outlink = ctx->outputs[0];
482  AVFrame *out, *adj;
483  ThreadData td;
484 
485  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
486  if (!out)
487  return AVERROR(ENOMEM);
488  av_frame_copy_props(out, s->cur);
489  out->interlaced_frame = 0;
490 
491  if (!is_second) {
492  if (out->pts != AV_NOPTS_VALUE)
493  out->pts *= 2;
494  } else {
495  int64_t cur_pts = s->cur->pts;
496  int64_t next_pts = s->next->pts;
497 
498  if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) {
499  out->pts = cur_pts + next_pts;
500  } else {
501  out->pts = AV_NOPTS_VALUE;
502  }
503  }
504 
505  adj = s->field ? s->next : s->prev;
506  td.out = out; td.cur = s->cur; td.adj = adj;
508  FFMIN(s->planeheight[1], s->nb_threads));
509 
510  if (s->mode)
511  s->field = !s->field;
512 
513  return ff_filter_frame(outlink, out);
514 }
515 
517 {
518  AVFilterContext *ctx = inlink->dst;
519  W3FDIFContext *s = ctx->priv;
520  int ret;
521 
522  av_frame_free(&s->prev);
523  s->prev = s->cur;
524  s->cur = s->next;
525  s->next = frame;
526 
527  if (!s->cur) {
528  s->cur = av_frame_clone(s->next);
529  if (!s->cur)
530  return AVERROR(ENOMEM);
531  }
532 
533  if (!s->prev)
534  return 0;
535 
536  if ((s->deint && !s->cur->interlaced_frame) || ctx->is_disabled) {
537  AVFrame *out = av_frame_clone(s->cur);
538  if (!out)
539  return AVERROR(ENOMEM);
540 
541  av_frame_free(&s->prev);
542  if (out->pts != AV_NOPTS_VALUE)
543  out->pts *= 2;
544  return ff_filter_frame(ctx->outputs[0], out);
545  }
546 
547  ret = filter(ctx, 0);
548  if (ret < 0 || s->mode == 0)
549  return ret;
550 
551  return filter(ctx, 1);
552 }
553 
554 static int request_frame(AVFilterLink *outlink)
555 {
556  AVFilterContext *ctx = outlink->src;
557  W3FDIFContext *s = ctx->priv;
558  int ret;
559 
560  if (s->eof)
561  return AVERROR_EOF;
562 
563  ret = ff_request_frame(ctx->inputs[0]);
564 
565  if (ret == AVERROR_EOF && s->cur) {
566  AVFrame *next = av_frame_clone(s->next);
567  if (!next)
568  return AVERROR(ENOMEM);
569  next->pts = s->next->pts * 2 - s->cur->pts;
570  filter_frame(ctx->inputs[0], next);
571  s->eof = 1;
572  } else if (ret < 0) {
573  return ret;
574  }
575 
576  return 0;
577 }
578 
580 {
581  W3FDIFContext *s = ctx->priv;
582  int i;
583 
584  av_frame_free(&s->prev);
585  av_frame_free(&s->cur );
586  av_frame_free(&s->next);
587 
588  for (i = 0; i < s->nb_threads; i++)
589  av_freep(&s->work_line[i]);
590 
591  av_freep(&s->work_line);
592 }
593 
594 static const AVFilterPad w3fdif_inputs[] = {
595  {
596  .name = "default",
597  .type = AVMEDIA_TYPE_VIDEO,
598  .filter_frame = filter_frame,
599  .config_props = config_input,
600  },
601 };
602 
603 static const AVFilterPad w3fdif_outputs[] = {
604  {
605  .name = "default",
606  .type = AVMEDIA_TYPE_VIDEO,
607  .config_props = config_output,
608  .request_frame = request_frame,
609  },
610 };
611 
613  .name = "w3fdif",
614  .description = NULL_IF_CONFIG_SMALL("Apply Martin Weston three field deinterlace."),
615  .priv_size = sizeof(W3FDIFContext),
616  .priv_class = &w3fdif_class,
617  .uninit = uninit,
622  .process_command = ff_filter_process_command,
623 };
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:101
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:502
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:481
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:95
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:1009
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2858
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:170
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:116
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:494
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
pixdesc.h
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:432
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:501
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:496
AVFrame::top_field_first
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:482
AVOption
AVOption.
Definition: opt.h:251
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:459
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:410
request_frame
static int request_frame(AVFilterLink *outlink)
Definition: vf_w3fdif.c:554
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:175
ThreadData::out
AVFrame * out
Definition: af_adeclick.c:473
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:497
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:439
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:346
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:352
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2898
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:493
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:477
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:475
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:503
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:457
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:443
w3fdif_outputs
static const AVFilterPad w3fdif_outputs[]
Definition: vf_w3fdif.c:603
W3FDIFContext::prev
AVFrame * prev
Definition: vf_w3fdif.c:45
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:462
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:276
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_w3fdif.c:579
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:471
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:479
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:256
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:480
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:472
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:50
deinterlace_slice
static int deinterlace_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_w3fdif.c:467
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:349
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:500
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:456
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:470
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:442
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:474
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:190
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:440
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:478
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:603
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
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:461
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:460
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:474
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
Definition: vf_w3fdif.c:516
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:327
w3fdif_inputs
static const AVFilterPad w3fdif_inputs[]
Definition: vf_w3fdif.c:594
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:115
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(w3fdif)
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:464
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:466
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:873
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:356
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:498
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:612
AVFrame::interlaced_frame
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:477
interlaced
uint8_t interlaced
Definition: mxfenc.c:2043
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
W3FDIFContext::nb_planes
int nb_planes
Definition: vf_w3fdif.c:44
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:476
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:793
ThreadData
Used for passing data between threads.
Definition: dsddec.c:69
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:55
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:272
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:458
AVFilter
Filter definition.
Definition: avfilter.h:171
ThreadData::cur
AVFrame * cur
Definition: vf_w3fdif.c:356
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:495
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:463
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:468
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:499
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
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:348
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:415
filter
static int filter(AVFilterContext *ctx, int is_second)
Definition: vf_w3fdif.c:478
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:127
desc
const char * desc
Definition: libsvtav1.c:83
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:191
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
deinterlace_plane_slice
static int deinterlace_plane_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs, int plane)
Definition: vf_w3fdif.c:359
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:160
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:370
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:27
W3FDIFContext::nb_threads
int nb_threads
Definition: vf_w3fdif.c:47
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:465
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:469
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:441
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:142
n_coef_hf
static const int8_t n_coef_hf[2]
Definition: vf_w3fdif.c:351
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:467
OFFSET
#define OFFSET(x)
Definition: vf_w3fdif.c:53