FFmpeg
vf_w3fdif.c
Go to the documentation of this file.
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 
77 {
78  static const enum AVPixelFormat pix_fmts[] = {
102  };
103 
105 }
106 
107 static void filter_simple_low(int32_t *work_line,
108  uint8_t *in_lines_cur[2],
109  const int16_t *coef, int linesize)
110 {
111  int i;
112 
113  for (i = 0; i < linesize; i++) {
114  *work_line = *in_lines_cur[0]++ * coef[0];
115  *work_line++ += *in_lines_cur[1]++ * coef[1];
116  }
117 }
118 
119 static void filter_complex_low(int32_t *work_line,
120  uint8_t *in_lines_cur[4],
121  const int16_t *coef, int linesize)
122 {
123  int i;
124 
125  for (i = 0; i < linesize; i++) {
126  *work_line = *in_lines_cur[0]++ * coef[0];
127  *work_line += *in_lines_cur[1]++ * coef[1];
128  *work_line += *in_lines_cur[2]++ * coef[2];
129  *work_line++ += *in_lines_cur[3]++ * coef[3];
130  }
131 }
132 
133 static void filter_simple_high(int32_t *work_line,
134  uint8_t *in_lines_cur[3],
135  uint8_t *in_lines_adj[3],
136  const int16_t *coef, int linesize)
137 {
138  int i;
139 
140  for (i = 0; i < linesize; i++) {
141  *work_line += *in_lines_cur[0]++ * coef[0];
142  *work_line += *in_lines_adj[0]++ * coef[0];
143  *work_line += *in_lines_cur[1]++ * coef[1];
144  *work_line += *in_lines_adj[1]++ * coef[1];
145  *work_line += *in_lines_cur[2]++ * coef[2];
146  *work_line++ += *in_lines_adj[2]++ * coef[2];
147  }
148 }
149 
150 static void filter_complex_high(int32_t *work_line,
151  uint8_t *in_lines_cur[5],
152  uint8_t *in_lines_adj[5],
153  const int16_t *coef, int linesize)
154 {
155  int i;
156 
157  for (i = 0; i < linesize; i++) {
158  *work_line += *in_lines_cur[0]++ * coef[0];
159  *work_line += *in_lines_adj[0]++ * coef[0];
160  *work_line += *in_lines_cur[1]++ * coef[1];
161  *work_line += *in_lines_adj[1]++ * coef[1];
162  *work_line += *in_lines_cur[2]++ * coef[2];
163  *work_line += *in_lines_adj[2]++ * coef[2];
164  *work_line += *in_lines_cur[3]++ * coef[3];
165  *work_line += *in_lines_adj[3]++ * coef[3];
166  *work_line += *in_lines_cur[4]++ * coef[4];
167  *work_line++ += *in_lines_adj[4]++ * coef[4];
168  }
169 }
170 
171 static void filter_scale(uint8_t *out_pixel, const int32_t *work_pixel, int linesize, int max)
172 {
173  int j;
174 
175  for (j = 0; j < linesize; j++, out_pixel++, work_pixel++)
176  *out_pixel = av_clip(*work_pixel, 0, 255 * 256 * 128) >> 15;
177 }
178 
179 static void filter16_simple_low(int32_t *work_line,
180  uint8_t *in_lines_cur8[2],
181  const int16_t *coef, int linesize)
182 {
183  uint16_t *in_lines_cur[2] = { (uint16_t *)in_lines_cur8[0], (uint16_t *)in_lines_cur8[1] };
184  int i;
185 
186  linesize /= 2;
187  for (i = 0; i < linesize; i++) {
188  *work_line = *in_lines_cur[0]++ * coef[0];
189  *work_line++ += *in_lines_cur[1]++ * coef[1];
190  }
191 }
192 
193 static void filter16_complex_low(int32_t *work_line,
194  uint8_t *in_lines_cur8[4],
195  const int16_t *coef, int linesize)
196 {
197  uint16_t *in_lines_cur[4] = { (uint16_t *)in_lines_cur8[0],
198  (uint16_t *)in_lines_cur8[1],
199  (uint16_t *)in_lines_cur8[2],
200  (uint16_t *)in_lines_cur8[3] };
201  int i;
202 
203  linesize /= 2;
204  for (i = 0; i < linesize; i++) {
205  *work_line = *in_lines_cur[0]++ * coef[0];
206  *work_line += *in_lines_cur[1]++ * coef[1];
207  *work_line += *in_lines_cur[2]++ * coef[2];
208  *work_line++ += *in_lines_cur[3]++ * coef[3];
209  }
210 }
211 
212 static void filter16_simple_high(int32_t *work_line,
213  uint8_t *in_lines_cur8[3],
214  uint8_t *in_lines_adj8[3],
215  const int16_t *coef, int linesize)
216 {
217  uint16_t *in_lines_cur[3] = { (uint16_t *)in_lines_cur8[0],
218  (uint16_t *)in_lines_cur8[1],
219  (uint16_t *)in_lines_cur8[2] };
220  uint16_t *in_lines_adj[3] = { (uint16_t *)in_lines_adj8[0],
221  (uint16_t *)in_lines_adj8[1],
222  (uint16_t *)in_lines_adj8[2] };
223  int i;
224 
225  linesize /= 2;
226  for (i = 0; i < linesize; i++) {
227  *work_line += *in_lines_cur[0]++ * coef[0];
228  *work_line += *in_lines_adj[0]++ * coef[0];
229  *work_line += *in_lines_cur[1]++ * coef[1];
230  *work_line += *in_lines_adj[1]++ * coef[1];
231  *work_line += *in_lines_cur[2]++ * coef[2];
232  *work_line++ += *in_lines_adj[2]++ * coef[2];
233  }
234 }
235 
236 static void filter16_complex_high(int32_t *work_line,
237  uint8_t *in_lines_cur8[5],
238  uint8_t *in_lines_adj8[5],
239  const int16_t *coef, int linesize)
240 {
241  uint16_t *in_lines_cur[5] = { (uint16_t *)in_lines_cur8[0],
242  (uint16_t *)in_lines_cur8[1],
243  (uint16_t *)in_lines_cur8[2],
244  (uint16_t *)in_lines_cur8[3],
245  (uint16_t *)in_lines_cur8[4] };
246  uint16_t *in_lines_adj[5] = { (uint16_t *)in_lines_adj8[0],
247  (uint16_t *)in_lines_adj8[1],
248  (uint16_t *)in_lines_adj8[2],
249  (uint16_t *)in_lines_adj8[3],
250  (uint16_t *)in_lines_adj8[4] };
251  int i;
252 
253  linesize /= 2;
254  for (i = 0; i < linesize; i++) {
255  *work_line += *in_lines_cur[0]++ * coef[0];
256  *work_line += *in_lines_adj[0]++ * coef[0];
257  *work_line += *in_lines_cur[1]++ * coef[1];
258  *work_line += *in_lines_adj[1]++ * coef[1];
259  *work_line += *in_lines_cur[2]++ * coef[2];
260  *work_line += *in_lines_adj[2]++ * coef[2];
261  *work_line += *in_lines_cur[3]++ * coef[3];
262  *work_line += *in_lines_adj[3]++ * coef[3];
263  *work_line += *in_lines_cur[4]++ * coef[4];
264  *work_line++ += *in_lines_adj[4]++ * coef[4];
265  }
266 }
267 
268 static void filter16_scale(uint8_t *out_pixel8, const int32_t *work_pixel, int linesize, int max)
269 {
270  uint16_t *out_pixel = (uint16_t *)out_pixel8;
271  int j;
272 
273  linesize /= 2;
274  for (j = 0; j < linesize; j++, out_pixel++, work_pixel++)
275  *out_pixel = av_clip(*work_pixel, 0, max) >> 15;
276 }
277 
279 {
280  AVFilterContext *ctx = inlink->dst;
281  W3FDIFContext *s = ctx->priv;
283  int ret, i, depth;
284 
285  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
286  return ret;
287 
288  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
289  s->planeheight[0] = s->planeheight[3] = inlink->h;
290 
291  if (inlink->h < 3) {
292  av_log(ctx, AV_LOG_ERROR, "Video of less than 3 lines is not supported\n");
293  return AVERROR(EINVAL);
294  }
295 
296  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
297  s->nb_threads = ff_filter_get_nb_threads(ctx);
298  s->work_line = av_calloc(s->nb_threads, sizeof(*s->work_line));
299  if (!s->work_line)
300  return AVERROR(ENOMEM);
301 
302  for (i = 0; i < s->nb_threads; i++) {
303  s->work_line[i] = av_calloc(FFALIGN(s->linesize[0], 32), sizeof(*s->work_line[0]));
304  if (!s->work_line[i])
305  return AVERROR(ENOMEM);
306  }
307 
308  depth = desc->comp[0].depth;
309  s->max = ((1 << depth) - 1) * 256 * 128;
310  if (depth <= 8) {
311  s->dsp.filter_simple_low = filter_simple_low;
312  s->dsp.filter_complex_low = filter_complex_low;
313  s->dsp.filter_simple_high = filter_simple_high;
314  s->dsp.filter_complex_high = filter_complex_high;
315  s->dsp.filter_scale = filter_scale;
316  } else {
317  s->dsp.filter_simple_low = filter16_simple_low;
318  s->dsp.filter_complex_low = filter16_complex_low;
319  s->dsp.filter_simple_high = filter16_simple_high;
320  s->dsp.filter_complex_high = filter16_complex_high;
321  s->dsp.filter_scale = filter16_scale;
322  }
323 
324  if (ARCH_X86)
325  ff_w3fdif_init_x86(&s->dsp, depth);
326 
327  return 0;
328 }
329 
330 static int config_output(AVFilterLink *outlink)
331 {
332  AVFilterLink *inlink = outlink->src->inputs[0];
333 
334  outlink->time_base = av_mul_q(inlink->time_base, (AVRational){1, 2});
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->deint && !s->cur->interlaced_frame) || ctx->is_disabled) {
534  AVFrame *out = av_frame_clone(s->cur);
535  if (!out)
536  return AVERROR(ENOMEM);
537 
538  av_frame_free(&s->prev);
539  if (out->pts != AV_NOPTS_VALUE)
540  out->pts *= 2;
541  return ff_filter_frame(ctx->outputs[0], out);
542  }
543 
544  if (!s->prev)
545  return 0;
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:98
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:432
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:411
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:1019
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2540
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:57
W3FDIFContext::max
int max
Definition: vf_w3fdif.c:48
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:424
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:431
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:426
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:389
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:421
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_w3fdif.c:76
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:153
ThreadData::out
AVFrame * out
Definition: af_adeclick.c:492
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:427
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:369
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:352
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2580
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:423
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:407
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:405
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:433
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:387
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:373
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:50
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:392
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_w3fdif.c:278
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:579
filter16_scale
static void filter16_scale(uint8_t *out_pixel8, const int32_t *work_pixel, int linesize, int max)
Definition: vf_w3fdif.c:268
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:401
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:409
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:410
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:402
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: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:133
coef_lf
static const int16_t coef_lf[2][4]
Definition: vf_w3fdif.c:349
W3FDIFContext::dsp
W3FDIFDSPContext dsp
Definition: vf_w3fdif.c:50
ff_set_common_formats_from_list
int ff_set_common_formats_from_list(AVFilterContext *ctx, const int *fmts)
Equivalent to ff_set_common_formats(ctx, ff_make_format_list(fmts))
Definition: formats.c:703
W3FDIFContext
Definition: vf_w3fdif.c:34
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:290
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:430
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:386
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:400
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:372
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:119
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:152
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:370
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:408
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:354
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:391
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:390
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:404
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:330
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:117
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(w3fdif)
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:394
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
parity
mcdeint parity
Definition: vf_mcdeint.c:274
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:396
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:236
filter_scale
static void filter_scale(uint8_t *out_pixel, const int32_t *work_pixel, int linesize, int max)
Definition: vf_w3fdif.c:171
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:883
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:107
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:428
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:433
interlaced
uint8_t interlaced
Definition: mxfenc.c:2209
i
int i
Definition: input.c:406
W3FDIFContext::nb_planes
int nb_planes
Definition: vf_w3fdif.c:44
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:406
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:804
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:388
AVFilter
Filter definition.
Definition: avfilter.h:149
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:425
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:393
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:398
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:193
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:212
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:429
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:179
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:150
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:346
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: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:153
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: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: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:395
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:399
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:371
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: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:397
OFFSET
#define OFFSET(x)
Definition: vf_w3fdif.c:53