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vf_lut.c
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1 /*
2  * Copyright (c) 2011 Stefano Sabatini
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 /**
22  * @file
23  * Compute a look-up table for binding the input value to the output
24  * value, and apply it to input video.
25  */
26 
27 #include "libavutil/attributes.h"
28 #include "libavutil/bswap.h"
29 #include "libavutil/common.h"
30 #include "libavutil/eval.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/pixdesc.h"
33 #include "avfilter.h"
34 #include "drawutils.h"
35 #include "formats.h"
36 #include "internal.h"
37 #include "video.h"
38 
39 static const char *const var_names[] = {
40  "w", ///< width of the input video
41  "h", ///< height of the input video
42  "val", ///< input value for the pixel
43  "maxval", ///< max value for the pixel
44  "minval", ///< min value for the pixel
45  "negval", ///< negated value
46  "clipval",
47  NULL
48 };
49 
50 enum var_name {
59 };
60 
61 typedef struct LutContext {
62  const AVClass *class;
63  uint16_t lut[4][256 * 256]; ///< lookup table for each component
64  char *comp_expr_str[4];
66  int hsub, vsub;
68  int is_rgb, is_yuv;
69  int is_planar;
70  int is_16bit;
71  int step;
72  int negate_alpha; /* only used by negate */
73 } LutContext;
74 
75 #define Y 0
76 #define U 1
77 #define V 2
78 #define R 0
79 #define G 1
80 #define B 2
81 #define A 3
82 
83 #define OFFSET(x) offsetof(LutContext, x)
84 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
85 
86 static const AVOption options[] = {
87  { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
88  { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
89  { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
90  { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
91  { "y", "set Y expression", OFFSET(comp_expr_str[Y]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
92  { "u", "set U expression", OFFSET(comp_expr_str[U]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
93  { "v", "set V expression", OFFSET(comp_expr_str[V]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
94  { "r", "set R expression", OFFSET(comp_expr_str[R]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
95  { "g", "set G expression", OFFSET(comp_expr_str[G]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
96  { "b", "set B expression", OFFSET(comp_expr_str[B]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
97  { "a", "set A expression", OFFSET(comp_expr_str[A]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
98  { NULL }
99 };
100 
102 {
103  LutContext *s = ctx->priv;
104  int i;
105 
106  for (i = 0; i < 4; i++) {
107  av_expr_free(s->comp_expr[i]);
108  s->comp_expr[i] = NULL;
109  av_freep(&s->comp_expr_str[i]);
110  }
111 }
112 
113 #define YUV_FORMATS \
114  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, \
115  AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P, \
116  AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, \
117  AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, \
118  AV_PIX_FMT_YUVJ440P, \
119  AV_PIX_FMT_YUV444P9LE, AV_PIX_FMT_YUV422P9LE, AV_PIX_FMT_YUV420P9LE, \
120  AV_PIX_FMT_YUV444P10LE, AV_PIX_FMT_YUV422P10LE, AV_PIX_FMT_YUV420P10LE, AV_PIX_FMT_YUV440P10LE, \
121  AV_PIX_FMT_YUV444P12LE, AV_PIX_FMT_YUV422P12LE, AV_PIX_FMT_YUV420P12LE, AV_PIX_FMT_YUV440P12LE, \
122  AV_PIX_FMT_YUV444P14LE, AV_PIX_FMT_YUV422P14LE, AV_PIX_FMT_YUV420P14LE, \
123  AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUV420P16LE, \
124  AV_PIX_FMT_YUVA444P16LE, AV_PIX_FMT_YUVA422P16LE, AV_PIX_FMT_YUVA420P16LE
125 
126 #define RGB_FORMATS \
127  AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA, \
128  AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, \
129  AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, \
130  AV_PIX_FMT_RGB48LE, AV_PIX_FMT_RGBA64LE, \
131  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, \
132  AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, \
133  AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, \
134  AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP12, \
135  AV_PIX_FMT_GBRAP16
136 
140 
142 {
143  LutContext *s = ctx->priv;
144 
145  const enum AVPixelFormat *pix_fmts = s->is_rgb ? rgb_pix_fmts :
146  s->is_yuv ? yuv_pix_fmts :
147  all_pix_fmts;
148  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
149  if (!fmts_list)
150  return AVERROR(ENOMEM);
151  return ff_set_common_formats(ctx, fmts_list);
152 }
153 
154 /**
155  * Clip value val in the minval - maxval range.
156  */
157 static double clip(void *opaque, double val)
158 {
159  LutContext *s = opaque;
160  double minval = s->var_values[VAR_MINVAL];
161  double maxval = s->var_values[VAR_MAXVAL];
162 
163  return av_clip(val, minval, maxval);
164 }
165 
166 /**
167  * Compute gamma correction for value val, assuming the minval-maxval
168  * range, val is clipped to a value contained in the same interval.
169  */
170 static double compute_gammaval(void *opaque, double gamma)
171 {
172  LutContext *s = opaque;
173  double val = s->var_values[VAR_CLIPVAL];
174  double minval = s->var_values[VAR_MINVAL];
175  double maxval = s->var_values[VAR_MAXVAL];
176 
177  return pow((val-minval)/(maxval-minval), gamma) * (maxval-minval)+minval;
178 }
179 
180 /**
181  * Compute ITU Rec.709 gamma correction of value val.
182  */
183 static double compute_gammaval709(void *opaque, double gamma)
184 {
185  LutContext *s = opaque;
186  double val = s->var_values[VAR_CLIPVAL];
187  double minval = s->var_values[VAR_MINVAL];
188  double maxval = s->var_values[VAR_MAXVAL];
189  double level = (val - minval) / (maxval - minval);
190  level = level < 0.018 ? 4.5 * level
191  : 1.099 * pow(level, 1.0 / gamma) - 0.099;
192  return level * (maxval - minval) + minval;
193 }
194 
195 static double (* const funcs1[])(void *, double) = {
196  clip,
199  NULL
200 };
201 
202 static const char * const funcs1_names[] = {
203  "clip",
204  "gammaval",
205  "gammaval709",
206  NULL
207 };
208 
209 static int config_props(AVFilterLink *inlink)
210 {
211  AVFilterContext *ctx = inlink->dst;
212  LutContext *s = ctx->priv;
214  uint8_t rgba_map[4]; /* component index -> RGBA color index map */
215  int min[4], max[4];
216  int val, color, ret;
217 
218  s->hsub = desc->log2_chroma_w;
219  s->vsub = desc->log2_chroma_h;
220 
221  s->var_values[VAR_W] = inlink->w;
222  s->var_values[VAR_H] = inlink->h;
223  s->is_16bit = desc->comp[0].depth > 8;
224 
225  switch (inlink->format) {
226  case AV_PIX_FMT_YUV410P:
227  case AV_PIX_FMT_YUV411P:
228  case AV_PIX_FMT_YUV420P:
229  case AV_PIX_FMT_YUV422P:
230  case AV_PIX_FMT_YUV440P:
231  case AV_PIX_FMT_YUV444P:
232  case AV_PIX_FMT_YUVA420P:
233  case AV_PIX_FMT_YUVA422P:
234  case AV_PIX_FMT_YUVA444P:
261  min[Y] = 16 * (1 << (desc->comp[0].depth - 8));
262  min[U] = 16 * (1 << (desc->comp[1].depth - 8));
263  min[V] = 16 * (1 << (desc->comp[2].depth - 8));
264  min[A] = 0;
265  max[Y] = 235 * (1 << (desc->comp[0].depth - 8));
266  max[U] = 240 * (1 << (desc->comp[1].depth - 8));
267  max[V] = 240 * (1 << (desc->comp[2].depth - 8));
268  max[A] = (1 << desc->comp[3].depth) - 1;
269  break;
270  case AV_PIX_FMT_RGB48LE:
271  case AV_PIX_FMT_RGBA64LE:
272  min[0] = min[1] = min[2] = min[3] = 0;
273  max[0] = max[1] = max[2] = max[3] = 65535;
274  break;
275  default:
276  min[0] = min[1] = min[2] = min[3] = 0;
277  max[0] = max[1] = max[2] = max[3] = 255 * (1 << (desc->comp[0].depth - 8));
278  }
279 
280  s->is_yuv = s->is_rgb = 0;
282  if (ff_fmt_is_in(inlink->format, yuv_pix_fmts)) s->is_yuv = 1;
283  else if (ff_fmt_is_in(inlink->format, rgb_pix_fmts)) s->is_rgb = 1;
284 
285  if (s->is_rgb) {
286  ff_fill_rgba_map(rgba_map, inlink->format);
287  s->step = av_get_bits_per_pixel(desc) >> 3;
288  if (s->is_16bit) {
289  s->step = s->step >> 1;
290  }
291  }
292 
293  for (color = 0; color < desc->nb_components; color++) {
294  double res;
295  int comp = s->is_rgb ? rgba_map[color] : color;
296 
297  /* create the parsed expression */
298  av_expr_free(s->comp_expr[color]);
299  s->comp_expr[color] = NULL;
300  ret = av_expr_parse(&s->comp_expr[color], s->comp_expr_str[color],
301  var_names, funcs1_names, funcs1, NULL, NULL, 0, ctx);
302  if (ret < 0) {
303  av_log(ctx, AV_LOG_ERROR,
304  "Error when parsing the expression '%s' for the component %d and color %d.\n",
305  s->comp_expr_str[comp], comp, color);
306  return AVERROR(EINVAL);
307  }
308 
309  /* compute the lut */
310  s->var_values[VAR_MAXVAL] = max[color];
311  s->var_values[VAR_MINVAL] = min[color];
312 
313  for (val = 0; val < (1 << desc->comp[0].depth); val++) {
314  s->var_values[VAR_VAL] = val;
315  s->var_values[VAR_CLIPVAL] = av_clip(val, min[color], max[color]);
316  s->var_values[VAR_NEGVAL] =
317  av_clip(min[color] + max[color] - s->var_values[VAR_VAL],
318  min[color], max[color]);
319 
320  res = av_expr_eval(s->comp_expr[color], s->var_values, s);
321  if (isnan(res)) {
322  av_log(ctx, AV_LOG_ERROR,
323  "Error when evaluating the expression '%s' for the value %d for the component %d.\n",
324  s->comp_expr_str[color], val, comp);
325  return AVERROR(EINVAL);
326  }
327  s->lut[comp][val] = av_clip((int)res, min[color], max[color]);
328  av_log(ctx, AV_LOG_DEBUG, "val[%d][%d] = %d\n", comp, val, s->lut[comp][val]);
329  }
330  }
331 
332  return 0;
333 }
334 
335 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
336 {
337  AVFilterContext *ctx = inlink->dst;
338  LutContext *s = ctx->priv;
339  AVFilterLink *outlink = ctx->outputs[0];
340  AVFrame *out;
341  int i, j, plane, direct = 0;
342 
343  if (av_frame_is_writable(in)) {
344  direct = 1;
345  out = in;
346  } else {
347  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
348  if (!out) {
349  av_frame_free(&in);
350  return AVERROR(ENOMEM);
351  }
352  av_frame_copy_props(out, in);
353  }
354 
355  if (s->is_rgb && s->is_16bit && !s->is_planar) {
356  /* packed, 16-bit */
357  uint16_t *inrow, *outrow, *inrow0, *outrow0;
358  const int w = inlink->w;
359  const int h = in->height;
360  const uint16_t (*tab)[256*256] = (const uint16_t (*)[256*256])s->lut;
361  const int in_linesize = in->linesize[0] / 2;
362  const int out_linesize = out->linesize[0] / 2;
363  const int step = s->step;
364 
365  inrow0 = (uint16_t*) in ->data[0];
366  outrow0 = (uint16_t*) out->data[0];
367 
368  for (i = 0; i < h; i ++) {
369  inrow = inrow0;
370  outrow = outrow0;
371  for (j = 0; j < w; j++) {
372 
373  switch (step) {
374 #if HAVE_BIGENDIAN
375  case 4: outrow[3] = av_bswap16(tab[3][av_bswap16(inrow[3])]); // Fall-through
376  case 3: outrow[2] = av_bswap16(tab[2][av_bswap16(inrow[2])]); // Fall-through
377  case 2: outrow[1] = av_bswap16(tab[1][av_bswap16(inrow[1])]); // Fall-through
378  default: outrow[0] = av_bswap16(tab[0][av_bswap16(inrow[0])]);
379 #else
380  case 4: outrow[3] = tab[3][inrow[3]]; // Fall-through
381  case 3: outrow[2] = tab[2][inrow[2]]; // Fall-through
382  case 2: outrow[1] = tab[1][inrow[1]]; // Fall-through
383  default: outrow[0] = tab[0][inrow[0]];
384 #endif
385  }
386  outrow += step;
387  inrow += step;
388  }
389  inrow0 += in_linesize;
390  outrow0 += out_linesize;
391  }
392  } else if (s->is_rgb && !s->is_planar) {
393  /* packed */
394  uint8_t *inrow, *outrow, *inrow0, *outrow0;
395  const int w = inlink->w;
396  const int h = in->height;
397  const uint16_t (*tab)[256*256] = (const uint16_t (*)[256*256])s->lut;
398  const int in_linesize = in->linesize[0];
399  const int out_linesize = out->linesize[0];
400  const int step = s->step;
401 
402  inrow0 = in ->data[0];
403  outrow0 = out->data[0];
404 
405  for (i = 0; i < h; i ++) {
406  inrow = inrow0;
407  outrow = outrow0;
408  for (j = 0; j < w; j++) {
409  switch (step) {
410  case 4: outrow[3] = tab[3][inrow[3]]; // Fall-through
411  case 3: outrow[2] = tab[2][inrow[2]]; // Fall-through
412  case 2: outrow[1] = tab[1][inrow[1]]; // Fall-through
413  default: outrow[0] = tab[0][inrow[0]];
414  }
415  outrow += step;
416  inrow += step;
417  }
418  inrow0 += in_linesize;
419  outrow0 += out_linesize;
420  }
421  } else if (s->is_16bit) {
422  // planar >8 bit depth
423  uint16_t *inrow, *outrow;
424 
425  for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
426  int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
427  int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
428  int h = AV_CEIL_RSHIFT(inlink->h, vsub);
429  int w = AV_CEIL_RSHIFT(inlink->w, hsub);
430  const uint16_t *tab = s->lut[plane];
431  const int in_linesize = in->linesize[plane] / 2;
432  const int out_linesize = out->linesize[plane] / 2;
433 
434  inrow = (uint16_t *)in ->data[plane];
435  outrow = (uint16_t *)out->data[plane];
436 
437  for (i = 0; i < h; i++) {
438  for (j = 0; j < w; j++) {
439 #if HAVE_BIGENDIAN
440  outrow[j] = av_bswap16(tab[av_bswap16(inrow[j])]);
441 #else
442  outrow[j] = tab[inrow[j]];
443 #endif
444  }
445  inrow += in_linesize;
446  outrow += out_linesize;
447  }
448  }
449  } else {
450  /* planar 8bit depth */
451  uint8_t *inrow, *outrow;
452 
453  for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
454  int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
455  int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
456  int h = AV_CEIL_RSHIFT(inlink->h, vsub);
457  int w = AV_CEIL_RSHIFT(inlink->w, hsub);
458  const uint16_t *tab = s->lut[plane];
459  const int in_linesize = in->linesize[plane];
460  const int out_linesize = out->linesize[plane];
461 
462  inrow = in ->data[plane];
463  outrow = out->data[plane];
464 
465  for (i = 0; i < h; i++) {
466  for (j = 0; j < w; j++)
467  outrow[j] = tab[inrow[j]];
468  inrow += in_linesize;
469  outrow += out_linesize;
470  }
471  }
472  }
473 
474  if (!direct)
475  av_frame_free(&in);
476 
477  return ff_filter_frame(outlink, out);
478 }
479 
480 static const AVFilterPad inputs[] = {
481  { .name = "default",
482  .type = AVMEDIA_TYPE_VIDEO,
483  .filter_frame = filter_frame,
484  .config_props = config_props,
485  },
486  { NULL }
487 };
488 static const AVFilterPad outputs[] = {
489  { .name = "default",
490  .type = AVMEDIA_TYPE_VIDEO,
491  },
492  { NULL }
493 };
494 
495 #define DEFINE_LUT_FILTER(name_, description_) \
496  AVFilter ff_vf_##name_ = { \
497  .name = #name_, \
498  .description = NULL_IF_CONFIG_SMALL(description_), \
499  .priv_size = sizeof(LutContext), \
500  .priv_class = &name_ ## _class, \
501  .init = name_##_init, \
502  .uninit = uninit, \
503  .query_formats = query_formats, \
504  .inputs = inputs, \
505  .outputs = outputs, \
506  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, \
507  }
508 
509 #if CONFIG_LUT_FILTER
510 
511 #define lut_options options
513 
514 static int lut_init(AVFilterContext *ctx)
515 {
516  return 0;
517 }
518 
519 DEFINE_LUT_FILTER(lut, "Compute and apply a lookup table to the RGB/YUV input video.");
520 #endif
521 
522 #if CONFIG_LUTYUV_FILTER
523 
524 #define lutyuv_options options
525 AVFILTER_DEFINE_CLASS(lutyuv);
526 
527 static av_cold int lutyuv_init(AVFilterContext *ctx)
528 {
529  LutContext *s = ctx->priv;
530 
531  s->is_yuv = 1;
532 
533  return 0;
534 }
535 
536 DEFINE_LUT_FILTER(lutyuv, "Compute and apply a lookup table to the YUV input video.");
537 #endif
538 
539 #if CONFIG_LUTRGB_FILTER
540 
541 #define lutrgb_options options
542 AVFILTER_DEFINE_CLASS(lutrgb);
543 
544 static av_cold int lutrgb_init(AVFilterContext *ctx)
545 {
546  LutContext *s = ctx->priv;
547 
548  s->is_rgb = 1;
549 
550  return 0;
551 }
552 
553 DEFINE_LUT_FILTER(lutrgb, "Compute and apply a lookup table to the RGB input video.");
554 #endif
555 
556 #if CONFIG_NEGATE_FILTER
557 
558 static const AVOption negate_options[] = {
559  { "negate_alpha", NULL, OFFSET(negate_alpha), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
560  { NULL }
561 };
562 
563 AVFILTER_DEFINE_CLASS(negate);
564 
565 static av_cold int negate_init(AVFilterContext *ctx)
566 {
567  LutContext *s = ctx->priv;
568  int i;
569 
570  av_log(ctx, AV_LOG_DEBUG, "negate_alpha:%d\n", s->negate_alpha);
571 
572  for (i = 0; i < 4; i++) {
573  s->comp_expr_str[i] = av_strdup((i == 3 && !s->negate_alpha) ?
574  "val" : "negval");
575  if (!s->comp_expr_str[i]) {
576  uninit(ctx);
577  return AVERROR(ENOMEM);
578  }
579  }
580 
581  return 0;
582 }
583 
584 DEFINE_LUT_FILTER(negate, "Negate input video.");
585 
586 #endif
int plane
Definition: avisynth_c.h:422
#define NULL
Definition: coverity.c:32
char * comp_expr_str[4]
Definition: vf_lut.c:64
const char const char void * val
Definition: avisynth_c.h:771
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
Definition: pixfmt.h:288
const char * s
Definition: avisynth_c.h:768
planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:258
int is_planar
Definition: vf_lut.c:69
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2263
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
AVOption.
Definition: opt.h:245
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:262
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:170
#define G
Definition: vf_lut.c:79
#define A
Definition: vf_lut.c:81
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
Main libavfilter public API header.
const char * desc
Definition: nvenc.c:99
int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel used by the pixel format described by pixdesc.
Definition: pixdesc.c:2215
#define RGB_FORMATS
Definition: vf_lut.c:126
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_lut.c:335
static const AVOption options[]
Definition: vf_lut.c:86
#define av_bswap16
Definition: bswap.h:31
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition: pixfmt.h:200
static const char *const funcs1_names[]
Definition: vf_lut.c:202
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:658
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:76
planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:139
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
static enum AVPixelFormat yuv_pix_fmts[]
Definition: vf_lut.c:137
static double compute_gammaval709(void *opaque, double gamma)
Compute ITU Rec.709 gamma correction of value val.
Definition: vf_lut.c:183
Macro definitions for various function/variable attributes.
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:59
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian ...
Definition: pixfmt.h:190
static const char *const var_names[]
Definition: vf_lut.c:39
#define R
Definition: vf_lut.c:78
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1189
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as lit...
Definition: pixfmt.h:111
static const uint32_t color[16+AV_CLASS_CATEGORY_NB]
Definition: log.c:94
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:264
static double(*const funcs1[])(void *, double)
Definition: vf_lut.c:195
Definition: eval.c:149
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
Definition: pixfmt.h:202
int ff_fmt_is_in(int fmt, const int *fmts)
Tell if an integer is contained in the provided -1-terminated list of integers.
Definition: formats.c:254
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:53
planar YUV 4:2:0, 13.5bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:168
#define YUV_FORMATS
Definition: vf_lut.c:113
int is_16bit
Definition: vf_lut.c:70
static enum AVPixelFormat all_pix_fmts[]
Definition: vf_lut.c:139
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:176
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:187
#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:568
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:153
void * priv
private data for use by the filter
Definition: avfilter.h:322
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:172
uint16_t lut[4][256 *256]
lookup table for each component
Definition: vf_lut.c:63
planar YUV 4:4:4 36bpp, (1 Cr & Cb sample per 1x1 Y & A samples), little-endian
Definition: pixfmt.h:194
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
var_name
Definition: aeval.c:46
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
double var_values[VAR_VARS_NB]
Definition: vf_lut.c:67
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
int hsub
Definition: vf_lut.c:66
#define OFFSET(x)
Definition: vf_lut.c:83
AVFormatContext * ctx
Definition: movenc.c:48
#define U
Definition: vf_lut.c:76
planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:256
planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:178
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:35
Definition: vf_lut.c:53
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:267
misc drawing utilities
int is_rgb
Definition: vf_lut.c:68
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:318
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:520
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
static const AVFilterPad outputs[]
Definition: vf_lut.c:488
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:188
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
planar YUV 4:4:0,24bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
Definition: pixfmt.h:290
static int query_formats(AVFilterContext *ctx)
Definition: vf_lut.c:141
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
planar YUV 4:2:2 48bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
Definition: pixfmt.h:204
Describe the class of an AVClass context structure.
Definition: log.h:67
planar YUV 4:4:4 64bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition: pixfmt.h:206
#define isnan(x)
Definition: libm.h:340
Definition: vf_lut.c:51
byte swapping routines
int step
Definition: vf_lut.c:71
AVExpr * comp_expr[4]
Definition: vf_lut.c:65
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:319
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
Definition: pixfmt.h:198
#define DEFINE_LUT_FILTER(name_, description_)
Definition: vf_lut.c:495
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
uint8_t level
Definition: svq3.c:206
planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:174
planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:143
static enum AVPixelFormat rgb_pix_fmts[]
Definition: vf_lut.c:138
static const AVFilterPad inputs[]
Definition: vf_lut.c:480
static int config_props(AVFilterLink *inlink)
Definition: vf_lut.c:209
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:260
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_lut.c:101
#define V
Definition: vf_lut.c:77
common internal and external API header
if(ret< 0)
Definition: vf_mcdeint.c:282
static double clip(void *opaque, double val)
Clip value val in the minval - maxval range.
Definition: vf_lut.c:157
#define Y
Definition: vf_lut.c:75
planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:141
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:69
planar YUV 4:2:0 25bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
Definition: pixfmt.h:196
planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:266
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:713
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:339
#define FLAGS
Definition: vf_lut.c:84
A list of supported formats for one end of a filter link.
Definition: formats.h:64
int negate_alpha
Definition: vf_lut.c:72
int vsub
Definition: vf_lut.c:66
static const struct twinvq_data tab
An instance of a filter.
Definition: avfilter.h:307
static double compute_gammaval(void *opaque, double gamma)
Compute gamma correction for value val, assuming the minval-maxval range, val is clipped to a value c...
Definition: vf_lut.c:170
int height
Definition: frame.h:236
FILE * out
Definition: movenc.c:54
#define av_freep(p)
static void comp(unsigned char *dst, int dst_stride, unsigned char *src, int src_stride, int add)
Definition: eamad.c:83
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:100
planar YUV 4:2:2 27bpp, (1 Cr & Cb sample per 2x1 Y & A samples), little-endian
Definition: pixfmt.h:192
internal API functions
int depth
Number of bits in the component.
Definition: pixdesc.h:58
#define B
Definition: vf_lut.c:80
float min
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
int is_yuv
Definition: vf_lut.c:68
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:144
Definition: vf_lut.c:52
for(j=16;j >0;--j)
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:580
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
Definition: pixfmt.h:217
simple arithmetic expression evaluator
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58