FFmpeg
vf_lut2.c
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1 /*
2  * Copyright (c) 2016 Paul B Mahol
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/attributes.h"
22 #include "libavutil/common.h"
23 #include "libavutil/eval.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixdesc.h"
26 #include "avfilter.h"
27 #include "drawutils.h"
28 #include "formats.h"
29 #include "internal.h"
30 #include "video.h"
31 #include "framesync.h"
32 
33 static const char *const var_names[] = {
34  "w", ///< width of the input video
35  "h", ///< height of the input video
36  "x", ///< input value for the pixel from input #1
37  "y", ///< input value for the pixel from input #2
38  "bdx", ///< input #1 video bitdepth
39  "bdy", ///< input #2 video bitdepth
40  NULL
41 };
42 
43 enum var_name {
51 };
52 
53 typedef struct LUT2Context {
54  const AVClass *class;
56 
57  int odepth;
58  char *comp_expr_str[4];
59 
62  uint16_t *lut[4]; ///< lookup table for each component
63  int width[4], height[4];
64  int widthx[4], heightx[4];
65  int widthy[4], heighty[4];
68  int nb_planes;
70  int tlut2;
71  AVFrame *prev_frame; /* only used with tlut2 */
72 
73  int (*lut2)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
74 } LUT2Context;
75 
76 typedef struct ThreadData {
77  AVFrame *out, *srcx, *srcy;
78 } ThreadData;
79 
80 #define OFFSET(x) offsetof(LUT2Context, x)
81 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
82 
83 static const AVOption options[] = {
84  { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
85  { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
86  { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
87  { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
88  { "d", "set output depth", OFFSET(odepth), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 16, .flags = FLAGS },
89  { NULL }
90 };
91 
93 {
94  LUT2Context *s = ctx->priv;
95  int i;
96 
99 
100  for (i = 0; i < 4; i++) {
101  av_expr_free(s->comp_expr[i]);
102  s->comp_expr[i] = NULL;
103  av_freep(&s->comp_expr_str[i]);
104  av_freep(&s->lut[i]);
105  }
106 }
107 
108 #define BIT8_FMTS \
109  AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, \
110  AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, \
111  AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P, \
112  AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, \
113  AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, \
114  AV_PIX_FMT_GRAY8, AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
115 
116 #define BIT9_FMTS \
117  AV_PIX_FMT_GBRP9, AV_PIX_FMT_GRAY9, \
118  AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, \
119  AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
120 
121 #define BIT10_FMTS \
122  AV_PIX_FMT_GRAY10, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10, \
123  AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, \
124  AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
125 
126 #define BIT12_FMTS \
127  AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12, \
128  AV_PIX_FMT_GRAY12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRP12,
129 
130 #define BIT14_FMTS \
131  AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, \
132  AV_PIX_FMT_GRAY14, AV_PIX_FMT_GBRP14,
133 
134 #define BIT16_FMTS \
135  AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, \
136  AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, \
137  AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
138 
140 {
141  LUT2Context *s = ctx->priv;
142  static const enum AVPixelFormat all_pix_fmts[] = {
143  BIT8_FMTS
144  BIT9_FMTS
145  BIT10_FMTS
146  BIT12_FMTS
148  };
149  static const enum AVPixelFormat bit8_pix_fmts[] = {
150  BIT8_FMTS
151  AV_PIX_FMT_NONE
152  };
153  static const enum AVPixelFormat bit9_pix_fmts[] = {
154  BIT9_FMTS
155  AV_PIX_FMT_NONE
156  };
157  static const enum AVPixelFormat bit10_pix_fmts[] = {
158  BIT10_FMTS
159  AV_PIX_FMT_NONE
160  };
161  static const enum AVPixelFormat bit12_pix_fmts[] = {
162  BIT12_FMTS
163  AV_PIX_FMT_NONE
164  };
165  static const enum AVPixelFormat bit14_pix_fmts[] = {
166  BIT14_FMTS
167  AV_PIX_FMT_NONE
168  };
169  static const enum AVPixelFormat bit16_pix_fmts[] = {
170  BIT16_FMTS
171  AV_PIX_FMT_NONE
172  };
173  const enum AVPixelFormat *pix_fmts;
174  int ret;
175 
176  if (s->tlut2 || !s->odepth)
177  return ff_set_common_formats(ctx, ff_make_format_list(all_pix_fmts));
178 
179  ret = ff_formats_ref(ff_make_format_list(all_pix_fmts), &ctx->inputs[0]->out_formats);
180  if (ret < 0)
181  return ret;
182 
183  switch (s->odepth) {
184  case 8: pix_fmts = bit8_pix_fmts; break;
185  case 9: pix_fmts = bit9_pix_fmts; break;
186  case 10: pix_fmts = bit10_pix_fmts; break;
187  case 12: pix_fmts = bit12_pix_fmts; break;
188  case 14: pix_fmts = bit14_pix_fmts; break;
189  case 16: pix_fmts = bit16_pix_fmts; break;
190  default: av_log(ctx, AV_LOG_ERROR, "Unsupported output bit depth %d.\n", s->odepth);
191  return AVERROR(EINVAL);
192  }
193 
194  return ff_formats_ref(ff_make_format_list(pix_fmts), &ctx->outputs[0]->in_formats);
195 }
196 
198 {
199  AVFilterContext *ctx = inlink->dst;
200  LUT2Context *s = ctx->priv;
202  int hsub = desc->log2_chroma_w;
203  int vsub = desc->log2_chroma_h;
204 
206  s->heightx[1] = s->heightx[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
207  s->heightx[0] = s->heightx[3] = inlink->h;
208  s->widthx[1] = s->widthx[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
209  s->widthx[0] = s->widthx[3] = inlink->w;
210 
211  s->var_values[VAR_W] = inlink->w;
212  s->var_values[VAR_H] = inlink->h;
213  s->depthx = desc->comp[0].depth;
215 
216  if (s->tlut2) {
217  s->depthy = desc->comp[0].depth;
219  }
220 
221  return 0;
222 }
223 
225 {
226  AVFilterContext *ctx = inlink->dst;
227  LUT2Context *s = ctx->priv;
229  int hsub = desc->log2_chroma_w;
230  int vsub = desc->log2_chroma_h;
231 
233  s->depthy = desc->comp[0].depth;
235  s->heighty[1] = s->heighty[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
236  s->heighty[0] = s->heighty[3] = inlink->h;
237  s->widthy[1] = s->widthy[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
238  s->widthy[0] = s->widthy[3] = inlink->w;
239 
240  return 0;
241 }
242 
243 #define DEFINE_LUT2(zname, xname, yname, ztype, xtype, ytype, zdiv, xdiv, ydiv) \
244 static int lut2_##zname##_##xname##_##yname(AVFilterContext *ctx, \
245  void *arg, \
246  int jobnr, int nb_jobs) \
247 { \
248  LUT2Context *s = ctx->priv; \
249  ThreadData *td = arg; \
250  AVFrame *out = td->out; \
251  AVFrame *srcx = td->srcx; \
252  AVFrame *srcy = td->srcy; \
253  const int odepth = s->odepth; \
254  int p, y, x; \
255  \
256  for (p = 0; p < s->nb_planes; p++) { \
257  const int slice_start = (s->heightx[p] * jobnr) / nb_jobs; \
258  const int slice_end = (s->heightx[p] * (jobnr+1)) / nb_jobs; \
259  const uint16_t *lut = s->lut[p]; \
260  const xtype *srcxx; \
261  const ytype *srcyy; \
262  ztype *dst; \
263  \
264  dst = (ztype *)(out->data[p] + slice_start * out->linesize[p]); \
265  srcxx = (const xtype *)(srcx->data[p] + slice_start * srcx->linesize[p]);\
266  srcyy = (const ytype *)(srcy->data[p] + slice_start * srcy->linesize[p]);\
267  \
268  for (y = slice_start; y < slice_end; y++) { \
269  for (x = 0; x < s->widthx[p]; x++) { \
270  dst[x] = av_clip_uintp2_c(lut[(srcyy[x] << s->depthx) | srcxx[x]], odepth); \
271  } \
272  \
273  dst += out->linesize[p] / zdiv; \
274  srcxx += srcx->linesize[p] / xdiv; \
275  srcyy += srcy->linesize[p] / ydiv; \
276  } \
277  } \
278  return 0; \
279 }
280 
281 DEFINE_LUT2(8, 8, 8, uint8_t, uint8_t, uint8_t, 1, 1, 1)
282 DEFINE_LUT2(8, 8, 16, uint8_t, uint8_t, uint16_t, 1, 1, 2)
283 DEFINE_LUT2(8, 16, 8, uint8_t, uint16_t, uint8_t, 1, 2, 1)
284 DEFINE_LUT2(8, 16, 16, uint8_t, uint16_t, uint16_t, 1, 2, 2)
285 DEFINE_LUT2(16, 8, 8, uint16_t, uint8_t, uint8_t, 2, 1, 1)
286 DEFINE_LUT2(16, 8, 16, uint16_t, uint8_t, uint16_t, 2, 1, 2)
287 DEFINE_LUT2(16, 16, 8, uint16_t, uint16_t, uint8_t, 2, 2, 1)
288 DEFINE_LUT2(16, 16, 16, uint16_t, uint16_t, uint16_t, 2, 2, 2)
289 
291 {
292  AVFilterContext *ctx = fs->parent;
293  LUT2Context *s = fs->opaque;
294  AVFilterLink *outlink = ctx->outputs[0];
295  AVFrame *out, *srcx = NULL, *srcy = NULL;
296  int ret;
297 
298  if ((ret = ff_framesync_get_frame(&s->fs, 0, &srcx, 0)) < 0 ||
299  (ret = ff_framesync_get_frame(&s->fs, 1, &srcy, 0)) < 0)
300  return ret;
301 
302  if (ctx->is_disabled || !srcy) {
303  out = av_frame_clone(srcx);
304  if (!out)
305  return AVERROR(ENOMEM);
306  } else {
307  ThreadData td;
308 
309  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
310  if (!out)
311  return AVERROR(ENOMEM);
312  av_frame_copy_props(out, srcx);
313 
314  td.out = out;
315  td.srcx = srcx;
316  td.srcy = srcy;
317  ctx->internal->execute(ctx, s->lut2, &td, NULL, FFMIN(s->heightx[1], ff_filter_get_nb_threads(ctx)));
318  }
319 
320  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
321 
322  return ff_filter_frame(outlink, out);
323 }
324 
325 static int config_output(AVFilterLink *outlink)
326 {
327  AVFilterContext *ctx = outlink->src;
328  LUT2Context *s = ctx->priv;
329  int p, ret;
330 
331  s->depth = s->depthx + s->depthy;
332  s->nb_planes = s->nb_planesx;
333 
334  s->lut2 = s->depth > 16 ? lut2_16_16_16 : lut2_8_8_8;
335  if (s->odepth) {
336  if (s->depthx == 8 && s->depthy == 8 && s->odepth > 8)
337  s->lut2 = lut2_16_8_8;
338  if (s->depthx > 8 && s->depthy == 8 && s->odepth > 8)
339  s->lut2 = lut2_16_16_8;
340  if (s->depthx == 8 && s->depthy > 8 && s->odepth > 8)
341  s->lut2 = lut2_16_8_16;
342  if (s->depthx == 8 && s->depthy == 8 && s->odepth == 8)
343  s->lut2 = lut2_8_8_8;
344  if (s->depthx > 8 && s->depthy == 8 && s->odepth == 8)
345  s->lut2 = lut2_8_16_8;
346  if (s->depthx == 8 && s->depthy > 8 && s->odepth == 8)
347  s->lut2 = lut2_8_8_16;
348  if (s->depthx > 8 && s->depthy > 8 && s->odepth == 8)
349  s->lut2 = lut2_8_16_16;
350  } else {
351  s->odepth = s->depthx;
352  }
353 
354  for (p = 0; p < s->nb_planes; p++) {
355  s->lut[p] = av_malloc_array(1 << s->depth, sizeof(uint16_t));
356  if (!s->lut[p])
357  return AVERROR(ENOMEM);
358  }
359 
360  for (p = 0; p < s->nb_planes; p++) {
361  double res;
362  int x, y;
363 
364  /* create the parsed expression */
365  av_expr_free(s->comp_expr[p]);
366  s->comp_expr[p] = NULL;
367  ret = av_expr_parse(&s->comp_expr[p], s->comp_expr_str[p],
368  var_names, NULL, NULL, NULL, NULL, 0, ctx);
369  if (ret < 0) {
370  av_log(ctx, AV_LOG_ERROR,
371  "Error when parsing the expression '%s' for the component %d.\n",
372  s->comp_expr_str[p], p);
373  return AVERROR(EINVAL);
374  }
375 
376  /* compute the lut */
377  for (y = 0; y < (1 << s->depthy); y++) {
378  s->var_values[VAR_Y] = y;
379  for (x = 0; x < (1 << s->depthx); x++) {
380  s->var_values[VAR_X] = x;
381  res = av_expr_eval(s->comp_expr[p], s->var_values, s);
382  if (isnan(res)) {
383  av_log(ctx, AV_LOG_ERROR,
384  "Error when evaluating the expression '%s' for the values %d and %d for the component %d.\n",
385  s->comp_expr_str[p], x, y, p);
386  return AVERROR(EINVAL);
387  }
388 
389  s->lut[p][(y << s->depthx) + x] = res;
390  }
391  }
392  }
393 
394  return 0;
395 }
396 
397 static int lut2_config_output(AVFilterLink *outlink)
398 {
399  AVFilterContext *ctx = outlink->src;
400  LUT2Context *s = ctx->priv;
401  AVFilterLink *srcx = ctx->inputs[0];
402  AVFilterLink *srcy = ctx->inputs[1];
403  FFFrameSyncIn *in;
405  int hsub = desc->log2_chroma_w;
406  int vsub = desc->log2_chroma_h;
407  int ret;
408 
409  outlink->w = srcx->w;
410  outlink->h = srcx->h;
411  outlink->time_base = srcx->time_base;
412  outlink->sample_aspect_ratio = srcx->sample_aspect_ratio;
413  outlink->frame_rate = srcx->frame_rate;
414 
416  s->height[1] = s->height[2] = AV_CEIL_RSHIFT(outlink->h, vsub);
417  s->height[0] = s->height[3] = outlink->h;
418  s->width[1] = s->width[2] = AV_CEIL_RSHIFT(outlink->w, hsub);
419  s->width[0] = s->width[3] = outlink->w;
420 
421  if (!s->odepth && srcx->format != srcy->format) {
422  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
423  return AVERROR(EINVAL);
424  }
425 
426  if (srcx->w != srcy->w || srcx->h != srcy->h) {
427  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
428  "(size %dx%d) do not match the corresponding "
429  "second input link %s parameters (size %dx%d)\n",
430  ctx->input_pads[0].name, srcx->w, srcx->h,
431  ctx->input_pads[1].name,
432  srcy->w, srcy->h);
433  return AVERROR(EINVAL);
434  }
435 
436  if (s->nb_planesx != s->nb_planesy) {
437  av_log(ctx, AV_LOG_ERROR, "First input link %s number of planes "
438  "(%d) do not match the corresponding "
439  "second input link %s number of planes (%d)\n",
440  ctx->input_pads[0].name, s->nb_planesx,
441  ctx->input_pads[1].name, s->nb_planesy);
442  return AVERROR(EINVAL);
443  }
444 
445  if (s->nb_planesx != s->nb_planes) {
446  av_log(ctx, AV_LOG_ERROR, "First input link %s number of planes "
447  "(%d) do not match the corresponding "
448  "output link %s number of planes (%d)\n",
449  ctx->input_pads[0].name, s->nb_planesx,
450  ctx->output_pads[0].name, s->nb_planes);
451  return AVERROR(EINVAL);
452  }
453 
454  if (s->widthx[1] != s->widthy[1] || s->heightx[1] != s->heighty[1]) {
455  av_log(ctx, AV_LOG_ERROR, "First input link %s 2nd plane "
456  "(size %dx%d) do not match the corresponding "
457  "second input link %s 2nd plane (size %dx%d)\n",
458  ctx->input_pads[0].name, s->widthx[1], s->heightx[1],
459  ctx->input_pads[1].name,
460  s->widthy[1], s->heighty[1]);
461  return AVERROR(EINVAL);
462  }
463 
464  if (s->widthx[2] != s->widthy[2] || s->heightx[2] != s->heighty[2]) {
465  av_log(ctx, AV_LOG_ERROR, "First input link %s 3rd plane "
466  "(size %dx%d) do not match the corresponding "
467  "second input link %s 3rd plane (size %dx%d)\n",
468  ctx->input_pads[0].name, s->widthx[2], s->heightx[2],
469  ctx->input_pads[1].name,
470  s->widthy[2], s->heighty[2]);
471  return AVERROR(EINVAL);
472  }
473 
474  if (s->widthx[1] != s->width[1] || s->heightx[1] != s->height[1]) {
475  av_log(ctx, AV_LOG_ERROR, "First input link %s 2nd plane "
476  "(size %dx%d) do not match the corresponding "
477  "output link %s 2nd plane (size %dx%d)\n",
478  ctx->input_pads[0].name, s->widthx[1], s->heightx[1],
479  ctx->output_pads[0].name, s->width[1], s->height[1]);
480  return AVERROR(EINVAL);
481  }
482 
483  if (s->widthx[2] != s->width[2] || s->heightx[2] != s->height[2]) {
484  av_log(ctx, AV_LOG_ERROR, "First input link %s 3rd plane "
485  "(size %dx%d) do not match the corresponding "
486  "output link %s 3rd plane (size %dx%d)\n",
487  ctx->input_pads[0].name, s->widthx[2], s->heightx[2],
488  ctx->output_pads[0].name, s->width[2], s->height[2]);
489  return AVERROR(EINVAL);
490  }
491 
492  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
493  return ret;
494 
495  in = s->fs.in;
496  in[0].time_base = srcx->time_base;
497  in[1].time_base = srcy->time_base;
498  in[0].sync = 2;
499  in[0].before = EXT_STOP;
500  in[0].after = EXT_INFINITY;
501  in[1].sync = 1;
502  in[1].before = EXT_STOP;
503  in[1].after = EXT_INFINITY;
504  s->fs.opaque = s;
506 
507  if ((ret = config_output(outlink)) < 0)
508  return ret;
509 
510  ret = ff_framesync_configure(&s->fs);
511  outlink->time_base = s->fs.time_base;
512 
513  return ret;
514 }
515 
517 {
518  LUT2Context *s = ctx->priv;
519  return ff_framesync_activate(&s->fs);
520 }
521 
522 static const AVFilterPad inputs[] = {
523  {
524  .name = "srcx",
525  .type = AVMEDIA_TYPE_VIDEO,
526  .config_props = config_inputx,
527  },
528  {
529  .name = "srcy",
530  .type = AVMEDIA_TYPE_VIDEO,
531  .config_props = config_inputy,
532  },
533  { NULL }
534 };
535 
536 static const AVFilterPad outputs[] = {
537  {
538  .name = "default",
539  .type = AVMEDIA_TYPE_VIDEO,
540  .config_props = lut2_config_output,
541  },
542  { NULL }
543 };
544 
545 #define lut2_options options
546 
548 
550  .name = "lut2",
551  .description = NULL_IF_CONFIG_SMALL("Compute and apply a lookup table from two video inputs."),
552  .preinit = lut2_framesync_preinit,
553  .priv_size = sizeof(LUT2Context),
554  .priv_class = &lut2_class,
555  .uninit = uninit,
557  .activate = activate,
558  .inputs = inputs,
559  .outputs = outputs,
562 };
563 
564 #if CONFIG_TLUT2_FILTER
565 
566 static av_cold int init(AVFilterContext *ctx)
567 {
568  LUT2Context *s = ctx->priv;
569 
570  s->tlut2 = !strcmp(ctx->filter->name, "tlut2");
571 
572  return 0;
573 }
574 
575 static int tlut2_filter_frame(AVFilterLink *inlink, AVFrame *frame)
576 {
577  AVFilterContext *ctx = inlink->dst;
578  LUT2Context *s = ctx->priv;
579  AVFilterLink *outlink = ctx->outputs[0];
580 
581  if (s->prev_frame) {
582  AVFrame *out;
583 
584  if (ctx->is_disabled) {
585  out = av_frame_clone(frame);
586  } else {
587  ThreadData td;
588 
589  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
590  if (!out) {
592  s->prev_frame = frame;
593  return AVERROR(ENOMEM);
594  }
595 
596  av_frame_copy_props(out, frame);
597 
598  td.out = out;
599  td.srcx = frame;
600  td.srcy = s->prev_frame;
601  ctx->internal->execute(ctx, s->lut2, &td, NULL, FFMIN(s->heightx[1], ff_filter_get_nb_threads(ctx)));
602  }
604  s->prev_frame = frame;
605  return ff_filter_frame(outlink, out);
606  }
607  s->prev_frame = frame;
608  return 0;
609 }
610 
611 static const AVOption tlut2_options[] = {
612  { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
613  { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
614  { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
615  { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
616  { NULL }
617 };
618 
620 
621 static const AVFilterPad tlut2_inputs[] = {
622  {
623  .name = "default",
624  .type = AVMEDIA_TYPE_VIDEO,
625  .filter_frame = tlut2_filter_frame,
626  .config_props = config_inputx,
627  },
628  { NULL }
629 };
630 
631 static const AVFilterPad tlut2_outputs[] = {
632  {
633  .name = "default",
634  .type = AVMEDIA_TYPE_VIDEO,
635  .config_props = config_output,
636  },
637  { NULL }
638 };
639 
641  .name = "tlut2",
642  .description = NULL_IF_CONFIG_SMALL("Compute and apply a lookup table from two successive frames."),
643  .priv_size = sizeof(LUT2Context),
644  .priv_class = &tlut2_class,
646  .init = init,
647  .uninit = uninit,
648  .inputs = tlut2_inputs,
649  .outputs = tlut2_outputs,
652 };
653 
654 #endif
#define BIT9_FMTS
Definition: vf_lut2.c:116
#define NULL
Definition: coverity.c:32
AVFilter ff_vf_tlut2
AVFrame * out
Definition: af_adeclick.c:488
static int config_inputx(AVFilterLink *inlink)
Definition: vf_lut2.c:197
int heightx[4]
Definition: vf_lut2.c:64
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2522
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
AVOption.
Definition: opt.h:246
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2562
Main libavfilter public API header.
static int config_output(AVFilterLink *outlink)
Definition: vf_lut2.c:325
const char * desc
Definition: nvenc.c:68
static enum AVPixelFormat all_pix_fmts[]
Definition: jpeg2000dec.c:252
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
FRAMESYNC_DEFINE_CLASS(lut2, LUT2Context, fs)
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:117
#define BIT10_FMTS
Definition: vf_lut2.c:121
int nb_planes
Definition: vf_lut2.c:68
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
Definition: eval.c:683
int depth
Definition: vf_lut2.c:69
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
int is_disabled
the enabled state from the last expression evaluation
Definition: avfilter.h:385
int64_t pts
Timestamp of the current event.
Definition: framesync.h:167
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
Macro definitions for various function/variable attributes.
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:86
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
const char * name
Pad name.
Definition: internal.h:60
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
static int query_formats(AVFilterContext *ctx)
Definition: vf_lut2.c:139
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1093
AVFilterPad * output_pads
array of output pads
Definition: avfilter.h:349
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
FFFrameSync fs
Definition: vf_lut2.c:55
#define av_cold
Definition: attributes.h:82
AVOptions.
Definition: vf_lut2.c:47
double var_values[VAR_VARS_NB]
Definition: vf_lut2.c:61
#define FLAGS
Definition: vf_lut2.c:81
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:388
Definition: eval.c:157
FFFrameSyncIn * in
Pointer to array of inputs.
Definition: framesync.h:203
static int process_frame(FFFrameSync *fs)
Definition: vf_lut2.c:290
Definition: vf_lut2.c:45
static const AVFilterPad outputs[]
Definition: vf_lut2.c:536
Definition: vf_lut2.c:46
AVFrame * prev_frame
Definition: vf_lut2.c:71
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:91
Input stream structure.
Definition: framesync.h:81
int depthy
Definition: vf_lut2.c:69
AVFrame * srcx
Definition: vf_lut2.c:77
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:345
int nb_planesx
Definition: vf_lut2.c:66
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:569
#define td
Definition: regdef.h:70
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:293
int width[4]
Definition: vf_lut2.c:63
Frame sync structure.
Definition: framesync.h:146
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
void * priv
private data for use by the filter
Definition: avfilter.h:353
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
int depthx
Definition: vf_lut2.c:69
const char * arg
Definition: jacosubdec.c:66
uint16_t * lut[4]
lookup table for each component
Definition: vf_lut2.c:62
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:96
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter&#39;s input and try to produce output.
Definition: framesync.c:344
int(* on_event)(struct FFFrameSync *fs)
Callback called when a frame event is ready.
Definition: framesync.h:172
AVFilter ff_vf_lut2
Definition: vf_lut2.c:549
var_name
Definition: aeval.c:46
static int activate(AVFilterContext *ctx)
Definition: vf_lut2.c:516
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
int(* lut2)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_lut2.c:73
#define FFMIN(a, b)
Definition: common.h:96
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add *ref as a new reference to formats.
Definition: formats.c:439
Definition: vf_lut2.c:44
int heighty[4]
Definition: vf_lut2.c:65
AVFormatContext * ctx
Definition: movenc.c:48
AVRational time_base
Time base for the output events.
Definition: framesync.h:162
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
#define s(width, name)
Definition: cbs_vp9.c:257
int height[4]
Definition: vf_lut2.c:63
void * opaque
Opaque pointer, not used by the API.
Definition: framesync.h:177
int nb_planesy
Definition: vf_lut2.c:67
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:540
static int lut2_config_output(AVFilterLink *outlink)
Definition: vf_lut2.c:397
static int config_inputy(AVFilterLink *inlink)
Definition: vf_lut2.c:224
Extend the frame to infinity.
Definition: framesync.h:75
misc drawing utilities
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:336
static const AVFilterPad inputs[]
Definition: vf_lut2.c:522
Used for passing data between threads.
Definition: dsddec.c:64
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:77
#define BIT12_FMTS
Definition: vf_lut2.c:126
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
int widthy[4]
Definition: vf_lut2.c:65
int widthx[4]
Definition: vf_lut2.c:64
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31))))#define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac){}void ff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map){AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);return NULL;}return ac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;}int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){int use_generic=1;int len=in->nb_samples;int p;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events...
Definition: framesync.h:139
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
#define isnan(x)
Definition: libm.h:340
const char * name
Filter name.
Definition: avfilter.h:148
#define OFFSET(x)
Definition: vf_lut2.c:80
#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:133
static const AVOption options[]
Definition: vf_lut2.c:83
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:378
int odepth
Definition: vf_lut2.c:57
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
int
common internal and external API header
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_lut2.c:92
avfilter_execute_func * execute
Definition: internal.h:155
Completely stop all streams with this one.
Definition: framesync.h:65
#define BIT16_FMTS
Definition: vf_lut2.c:134
int tlut2
Definition: vf_lut2.c:70
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:738
#define BIT8_FMTS
Definition: vf_lut2.c:108
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:334
static const char *const var_names[]
Definition: vf_lut2.c:33
AVExpr * comp_expr[4]
Definition: vf_lut2.c:60
An instance of a filter.
Definition: avfilter.h:338
char * comp_expr_str[4]
Definition: vf_lut2.c:58
FILE * out
Definition: movenc.c:54
#define av_freep(p)
#define av_malloc_array(a, b)
internal API functions
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
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:256
#define DEFINE_LUT2(zname, xname, yname, ztype, xtype, ytype, zdiv, xdiv, ydiv)
Definition: vf_lut2.c:243
int depth
Number of bits in the component.
Definition: pixdesc.h:58
#define BIT14_FMTS
Definition: vf_lut2.c:130
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:74
const AVFilter * filter
the AVFilter of which this is an instance
Definition: avfilter.h:341
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
AVFrame * srcy
Definition: vf_lut2.c:77
simple arithmetic expression evaluator
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58