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_YUVA422P12, AV_PIX_FMT_YUVA444P12, \
129  AV_PIX_FMT_GRAY12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRP12,
130 
131 #define BIT14_FMTS \
132  AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, \
133  AV_PIX_FMT_GRAY14, AV_PIX_FMT_GBRP14,
134 
135 #define BIT16_FMTS \
136  AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, \
137  AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, \
138  AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
139 
141 {
142  LUT2Context *s = ctx->priv;
143  static const enum AVPixelFormat all_pix_fmts[] = {
144  BIT8_FMTS
145  BIT9_FMTS
146  BIT10_FMTS
147  BIT12_FMTS
149  };
150  static const enum AVPixelFormat bit8_pix_fmts[] = {
151  BIT8_FMTS
152  AV_PIX_FMT_NONE
153  };
154  static const enum AVPixelFormat bit9_pix_fmts[] = {
155  BIT9_FMTS
156  AV_PIX_FMT_NONE
157  };
158  static const enum AVPixelFormat bit10_pix_fmts[] = {
159  BIT10_FMTS
160  AV_PIX_FMT_NONE
161  };
162  static const enum AVPixelFormat bit12_pix_fmts[] = {
163  BIT12_FMTS
164  AV_PIX_FMT_NONE
165  };
166  static const enum AVPixelFormat bit14_pix_fmts[] = {
167  BIT14_FMTS
168  AV_PIX_FMT_NONE
169  };
170  static const enum AVPixelFormat bit16_pix_fmts[] = {
171  BIT16_FMTS
172  AV_PIX_FMT_NONE
173  };
174  const enum AVPixelFormat *pix_fmts;
175  int ret;
176 
177  if (s->tlut2 || !s->odepth)
178  return ff_set_common_formats(ctx, ff_make_format_list(all_pix_fmts));
179 
180  ret = ff_formats_ref(ff_make_format_list(all_pix_fmts), &ctx->inputs[0]->out_formats);
181  if (ret < 0)
182  return ret;
183 
184  switch (s->odepth) {
185  case 8: pix_fmts = bit8_pix_fmts; break;
186  case 9: pix_fmts = bit9_pix_fmts; break;
187  case 10: pix_fmts = bit10_pix_fmts; break;
188  case 12: pix_fmts = bit12_pix_fmts; break;
189  case 14: pix_fmts = bit14_pix_fmts; break;
190  case 16: pix_fmts = bit16_pix_fmts; break;
191  default: av_log(ctx, AV_LOG_ERROR, "Unsupported output bit depth %d.\n", s->odepth);
192  return AVERROR(EINVAL);
193  }
194 
195  return ff_formats_ref(ff_make_format_list(pix_fmts), &ctx->outputs[0]->in_formats);
196 }
197 
199 {
200  AVFilterContext *ctx = inlink->dst;
201  LUT2Context *s = ctx->priv;
203  int hsub = desc->log2_chroma_w;
204  int vsub = desc->log2_chroma_h;
205 
207  s->heightx[1] = s->heightx[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
208  s->heightx[0] = s->heightx[3] = inlink->h;
209  s->widthx[1] = s->widthx[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
210  s->widthx[0] = s->widthx[3] = inlink->w;
211 
212  s->var_values[VAR_W] = inlink->w;
213  s->var_values[VAR_H] = inlink->h;
214  s->depthx = desc->comp[0].depth;
216 
217  if (s->tlut2) {
218  s->depthy = desc->comp[0].depth;
220  }
221 
222  return 0;
223 }
224 
226 {
227  AVFilterContext *ctx = inlink->dst;
228  LUT2Context *s = ctx->priv;
230  int hsub = desc->log2_chroma_w;
231  int vsub = desc->log2_chroma_h;
232 
234  s->depthy = desc->comp[0].depth;
236  s->heighty[1] = s->heighty[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
237  s->heighty[0] = s->heighty[3] = inlink->h;
238  s->widthy[1] = s->widthy[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
239  s->widthy[0] = s->widthy[3] = inlink->w;
240 
241  return 0;
242 }
243 
244 #define DEFINE_LUT2(zname, xname, yname, ztype, xtype, ytype, zdiv, xdiv, ydiv) \
245 static int lut2_##zname##_##xname##_##yname(AVFilterContext *ctx, \
246  void *arg, \
247  int jobnr, int nb_jobs) \
248 { \
249  LUT2Context *s = ctx->priv; \
250  ThreadData *td = arg; \
251  AVFrame *out = td->out; \
252  AVFrame *srcx = td->srcx; \
253  AVFrame *srcy = td->srcy; \
254  const int odepth = s->odepth; \
255  int p, y, x; \
256  \
257  for (p = 0; p < s->nb_planes; p++) { \
258  const int slice_start = (s->heightx[p] * jobnr) / nb_jobs; \
259  const int slice_end = (s->heightx[p] * (jobnr+1)) / nb_jobs; \
260  const uint16_t *lut = s->lut[p]; \
261  const xtype *srcxx; \
262  const ytype *srcyy; \
263  ztype *dst; \
264  \
265  dst = (ztype *)(out->data[p] + slice_start * out->linesize[p]); \
266  srcxx = (const xtype *)(srcx->data[p] + slice_start * srcx->linesize[p]);\
267  srcyy = (const ytype *)(srcy->data[p] + slice_start * srcy->linesize[p]);\
268  \
269  for (y = slice_start; y < slice_end; y++) { \
270  for (x = 0; x < s->widthx[p]; x++) { \
271  dst[x] = av_clip_uintp2_c(lut[(srcyy[x] << s->depthx) | srcxx[x]], odepth); \
272  } \
273  \
274  dst += out->linesize[p] / zdiv; \
275  srcxx += srcx->linesize[p] / xdiv; \
276  srcyy += srcy->linesize[p] / ydiv; \
277  } \
278  } \
279  return 0; \
280 }
281 
282 DEFINE_LUT2(8, 8, 8, uint8_t, uint8_t, uint8_t, 1, 1, 1)
283 DEFINE_LUT2(8, 8, 16, uint8_t, uint8_t, uint16_t, 1, 1, 2)
284 DEFINE_LUT2(8, 16, 8, uint8_t, uint16_t, uint8_t, 1, 2, 1)
285 DEFINE_LUT2(8, 16, 16, uint8_t, uint16_t, uint16_t, 1, 2, 2)
286 DEFINE_LUT2(16, 8, 8, uint16_t, uint8_t, uint8_t, 2, 1, 1)
287 DEFINE_LUT2(16, 8, 16, uint16_t, uint8_t, uint16_t, 2, 1, 2)
288 DEFINE_LUT2(16, 16, 8, uint16_t, uint16_t, uint8_t, 2, 2, 1)
289 DEFINE_LUT2(16, 16, 16, uint16_t, uint16_t, uint16_t, 2, 2, 2)
290 
292 {
293  AVFilterContext *ctx = fs->parent;
294  LUT2Context *s = fs->opaque;
295  AVFilterLink *outlink = ctx->outputs[0];
296  AVFrame *out, *srcx = NULL, *srcy = NULL;
297  int ret;
298 
299  if ((ret = ff_framesync_get_frame(&s->fs, 0, &srcx, 0)) < 0 ||
300  (ret = ff_framesync_get_frame(&s->fs, 1, &srcy, 0)) < 0)
301  return ret;
302 
303  if (ctx->is_disabled || !srcy) {
304  out = av_frame_clone(srcx);
305  if (!out)
306  return AVERROR(ENOMEM);
307  } else {
308  ThreadData td;
309 
310  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
311  if (!out)
312  return AVERROR(ENOMEM);
313  av_frame_copy_props(out, srcx);
314 
315  td.out = out;
316  td.srcx = srcx;
317  td.srcy = srcy;
318  ctx->internal->execute(ctx, s->lut2, &td, NULL, FFMIN(s->heightx[1], ff_filter_get_nb_threads(ctx)));
319  }
320 
321  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
322 
323  return ff_filter_frame(outlink, out);
324 }
325 
326 static int config_output(AVFilterLink *outlink)
327 {
328  AVFilterContext *ctx = outlink->src;
329  LUT2Context *s = ctx->priv;
330  int p, ret;
331 
332  s->depth = s->depthx + s->depthy;
333  s->nb_planes = s->nb_planesx;
334 
335  s->lut2 = s->depth > 16 ? lut2_16_16_16 : lut2_8_8_8;
336  if (s->odepth) {
337  if (s->depthx == 8 && s->depthy == 8 && s->odepth > 8)
338  s->lut2 = lut2_16_8_8;
339  if (s->depthx > 8 && s->depthy == 8 && s->odepth > 8)
340  s->lut2 = lut2_16_16_8;
341  if (s->depthx == 8 && s->depthy > 8 && s->odepth > 8)
342  s->lut2 = lut2_16_8_16;
343  if (s->depthx == 8 && s->depthy == 8 && s->odepth == 8)
344  s->lut2 = lut2_8_8_8;
345  if (s->depthx > 8 && s->depthy == 8 && s->odepth == 8)
346  s->lut2 = lut2_8_16_8;
347  if (s->depthx == 8 && s->depthy > 8 && s->odepth == 8)
348  s->lut2 = lut2_8_8_16;
349  if (s->depthx > 8 && s->depthy > 8 && s->odepth == 8)
350  s->lut2 = lut2_8_16_16;
351  } else {
352  s->odepth = s->depthx;
353  }
354 
355  for (p = 0; p < s->nb_planes; p++) {
356  s->lut[p] = av_malloc_array(1 << s->depth, sizeof(uint16_t));
357  if (!s->lut[p])
358  return AVERROR(ENOMEM);
359  }
360 
361  for (p = 0; p < s->nb_planes; p++) {
362  double res;
363  int x, y;
364 
365  /* create the parsed expression */
366  av_expr_free(s->comp_expr[p]);
367  s->comp_expr[p] = NULL;
368  ret = av_expr_parse(&s->comp_expr[p], s->comp_expr_str[p],
369  var_names, NULL, NULL, NULL, NULL, 0, ctx);
370  if (ret < 0) {
371  av_log(ctx, AV_LOG_ERROR,
372  "Error when parsing the expression '%s' for the component %d.\n",
373  s->comp_expr_str[p], p);
374  return AVERROR(EINVAL);
375  }
376 
377  /* compute the lut */
378  for (y = 0; y < (1 << s->depthy); y++) {
379  s->var_values[VAR_Y] = y;
380  for (x = 0; x < (1 << s->depthx); x++) {
381  s->var_values[VAR_X] = x;
382  res = av_expr_eval(s->comp_expr[p], s->var_values, s);
383  if (isnan(res)) {
384  av_log(ctx, AV_LOG_ERROR,
385  "Error when evaluating the expression '%s' for the values %d and %d for the component %d.\n",
386  s->comp_expr_str[p], x, y, p);
387  return AVERROR(EINVAL);
388  }
389 
390  s->lut[p][(y << s->depthx) + x] = res;
391  }
392  }
393  }
394 
395  return 0;
396 }
397 
398 static int lut2_config_output(AVFilterLink *outlink)
399 {
400  AVFilterContext *ctx = outlink->src;
401  LUT2Context *s = ctx->priv;
402  AVFilterLink *srcx = ctx->inputs[0];
403  AVFilterLink *srcy = ctx->inputs[1];
404  FFFrameSyncIn *in;
406  int hsub = desc->log2_chroma_w;
407  int vsub = desc->log2_chroma_h;
408  int ret;
409 
410  outlink->w = srcx->w;
411  outlink->h = srcx->h;
412  outlink->time_base = srcx->time_base;
413  outlink->sample_aspect_ratio = srcx->sample_aspect_ratio;
414  outlink->frame_rate = srcx->frame_rate;
415 
417  s->height[1] = s->height[2] = AV_CEIL_RSHIFT(outlink->h, vsub);
418  s->height[0] = s->height[3] = outlink->h;
419  s->width[1] = s->width[2] = AV_CEIL_RSHIFT(outlink->w, hsub);
420  s->width[0] = s->width[3] = outlink->w;
421 
422  if (!s->odepth && srcx->format != srcy->format) {
423  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
424  return AVERROR(EINVAL);
425  }
426 
427  if (srcx->w != srcy->w || srcx->h != srcy->h) {
428  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
429  "(size %dx%d) do not match the corresponding "
430  "second input link %s parameters (size %dx%d)\n",
431  ctx->input_pads[0].name, srcx->w, srcx->h,
432  ctx->input_pads[1].name,
433  srcy->w, srcy->h);
434  return AVERROR(EINVAL);
435  }
436 
437  if (s->nb_planesx != s->nb_planesy) {
438  av_log(ctx, AV_LOG_ERROR, "First input link %s number of planes "
439  "(%d) do not match the corresponding "
440  "second input link %s number of planes (%d)\n",
441  ctx->input_pads[0].name, s->nb_planesx,
442  ctx->input_pads[1].name, s->nb_planesy);
443  return AVERROR(EINVAL);
444  }
445 
446  if (s->nb_planesx != s->nb_planes) {
447  av_log(ctx, AV_LOG_ERROR, "First input link %s number of planes "
448  "(%d) do not match the corresponding "
449  "output link %s number of planes (%d)\n",
450  ctx->input_pads[0].name, s->nb_planesx,
451  ctx->output_pads[0].name, s->nb_planes);
452  return AVERROR(EINVAL);
453  }
454 
455  if (s->widthx[1] != s->widthy[1] || s->heightx[1] != s->heighty[1]) {
456  av_log(ctx, AV_LOG_ERROR, "First input link %s 2nd plane "
457  "(size %dx%d) do not match the corresponding "
458  "second input link %s 2nd plane (size %dx%d)\n",
459  ctx->input_pads[0].name, s->widthx[1], s->heightx[1],
460  ctx->input_pads[1].name,
461  s->widthy[1], s->heighty[1]);
462  return AVERROR(EINVAL);
463  }
464 
465  if (s->widthx[2] != s->widthy[2] || s->heightx[2] != s->heighty[2]) {
466  av_log(ctx, AV_LOG_ERROR, "First input link %s 3rd plane "
467  "(size %dx%d) do not match the corresponding "
468  "second input link %s 3rd plane (size %dx%d)\n",
469  ctx->input_pads[0].name, s->widthx[2], s->heightx[2],
470  ctx->input_pads[1].name,
471  s->widthy[2], s->heighty[2]);
472  return AVERROR(EINVAL);
473  }
474 
475  if (s->widthx[1] != s->width[1] || s->heightx[1] != s->height[1]) {
476  av_log(ctx, AV_LOG_ERROR, "First input link %s 2nd plane "
477  "(size %dx%d) do not match the corresponding "
478  "output link %s 2nd plane (size %dx%d)\n",
479  ctx->input_pads[0].name, s->widthx[1], s->heightx[1],
480  ctx->output_pads[0].name, s->width[1], s->height[1]);
481  return AVERROR(EINVAL);
482  }
483 
484  if (s->widthx[2] != s->width[2] || s->heightx[2] != s->height[2]) {
485  av_log(ctx, AV_LOG_ERROR, "First input link %s 3rd plane "
486  "(size %dx%d) do not match the corresponding "
487  "output link %s 3rd plane (size %dx%d)\n",
488  ctx->input_pads[0].name, s->widthx[2], s->heightx[2],
489  ctx->output_pads[0].name, s->width[2], s->height[2]);
490  return AVERROR(EINVAL);
491  }
492 
493  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
494  return ret;
495 
496  in = s->fs.in;
497  in[0].time_base = srcx->time_base;
498  in[1].time_base = srcy->time_base;
499  in[0].sync = 2;
500  in[0].before = EXT_STOP;
501  in[0].after = EXT_INFINITY;
502  in[1].sync = 1;
503  in[1].before = EXT_STOP;
504  in[1].after = EXT_INFINITY;
505  s->fs.opaque = s;
507 
508  if ((ret = config_output(outlink)) < 0)
509  return ret;
510 
511  ret = ff_framesync_configure(&s->fs);
512  outlink->time_base = s->fs.time_base;
513 
514  return ret;
515 }
516 
518 {
519  LUT2Context *s = ctx->priv;
520  return ff_framesync_activate(&s->fs);
521 }
522 
523 static const AVFilterPad inputs[] = {
524  {
525  .name = "srcx",
526  .type = AVMEDIA_TYPE_VIDEO,
527  .config_props = config_inputx,
528  },
529  {
530  .name = "srcy",
531  .type = AVMEDIA_TYPE_VIDEO,
532  .config_props = config_inputy,
533  },
534  { NULL }
535 };
536 
537 static const AVFilterPad outputs[] = {
538  {
539  .name = "default",
540  .type = AVMEDIA_TYPE_VIDEO,
541  .config_props = lut2_config_output,
542  },
543  { NULL }
544 };
545 
546 #define lut2_options options
547 
549 
551  .name = "lut2",
552  .description = NULL_IF_CONFIG_SMALL("Compute and apply a lookup table from two video inputs."),
553  .preinit = lut2_framesync_preinit,
554  .priv_size = sizeof(LUT2Context),
555  .priv_class = &lut2_class,
556  .uninit = uninit,
558  .activate = activate,
559  .inputs = inputs,
560  .outputs = outputs,
563 };
564 
565 #if CONFIG_TLUT2_FILTER
566 
567 static av_cold int init(AVFilterContext *ctx)
568 {
569  LUT2Context *s = ctx->priv;
570 
571  s->tlut2 = !strcmp(ctx->filter->name, "tlut2");
572 
573  return 0;
574 }
575 
576 static int tlut2_filter_frame(AVFilterLink *inlink, AVFrame *frame)
577 {
578  AVFilterContext *ctx = inlink->dst;
579  LUT2Context *s = ctx->priv;
580  AVFilterLink *outlink = ctx->outputs[0];
581 
582  if (s->prev_frame) {
583  AVFrame *out;
584 
585  if (ctx->is_disabled) {
586  out = av_frame_clone(frame);
587  } else {
588  ThreadData td;
589 
590  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
591  if (!out) {
593  s->prev_frame = frame;
594  return AVERROR(ENOMEM);
595  }
596 
597  av_frame_copy_props(out, frame);
598 
599  td.out = out;
600  td.srcx = frame;
601  td.srcy = s->prev_frame;
602  ctx->internal->execute(ctx, s->lut2, &td, NULL, FFMIN(s->heightx[1], ff_filter_get_nb_threads(ctx)));
603  }
605  s->prev_frame = frame;
606  return ff_filter_frame(outlink, out);
607  }
608  s->prev_frame = frame;
609  return 0;
610 }
611 
612 static const AVOption tlut2_options[] = {
613  { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
614  { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
615  { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
616  { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = FLAGS },
617  { NULL }
618 };
619 
621 
622 static const AVFilterPad tlut2_inputs[] = {
623  {
624  .name = "default",
625  .type = AVMEDIA_TYPE_VIDEO,
626  .filter_frame = tlut2_filter_frame,
627  .config_props = config_inputx,
628  },
629  { NULL }
630 };
631 
632 static const AVFilterPad tlut2_outputs[] = {
633  {
634  .name = "default",
635  .type = AVMEDIA_TYPE_VIDEO,
636  .config_props = config_output,
637  },
638  { NULL }
639 };
640 
642  .name = "tlut2",
643  .description = NULL_IF_CONFIG_SMALL("Compute and apply a lookup table from two successive frames."),
644  .priv_size = sizeof(LUT2Context),
645  .priv_class = &tlut2_class,
647  .init = init,
648  .uninit = uninit,
649  .inputs = tlut2_inputs,
650  .outputs = tlut2_outputs,
653 };
654 
655 #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:198
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:326
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:140
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:291
Definition: vf_lut2.c:45
static const AVFilterPad outputs[]
Definition: vf_lut2.c:537
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:550
var_name
Definition: aeval.c:46
static int activate(AVFilterContext *ctx)
Definition: vf_lut2.c:517
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:398
static int config_inputy(AVFilterLink *inlink)
Definition: vf_lut2.c:225
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:523
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:135
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:754
#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:244
int depth
Number of bits in the component.
Definition: pixdesc.h:58
#define BIT14_FMTS
Definition: vf_lut2.c:131
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