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vf_lut3d.c
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1 /*
2  * Copyright (c) 2013 Clément Bœsch
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  * 3D Lookup table filter
24  */
25 
26 #include "libavutil/opt.h"
27 #include "libavutil/file.h"
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/avassert.h"
30 #include "libavutil/pixdesc.h"
31 #include "libavutil/avstring.h"
32 #include "avfilter.h"
33 #include "drawutils.h"
34 #include "dualinput.h"
35 #include "formats.h"
36 #include "internal.h"
37 #include "video.h"
38 
39 #define R 0
40 #define G 1
41 #define B 2
42 #define A 3
43 
49 };
50 
51 struct rgbvec {
52  float r, g, b;
53 };
54 
55 /* 3D LUT don't often go up to level 32, but it is common to have a Hald CLUT
56  * of 512x512 (64x64x64) */
57 #define MAX_LEVEL 64
58 
59 typedef struct LUT3DContext {
60  const AVClass *class;
61  int interpolation; ///<interp_mode
62  char *file;
64  int step;
67  int lutsize;
68 #if CONFIG_HALDCLUT_FILTER
69  uint8_t clut_rgba_map[4];
70  int clut_step;
71  int clut_is16bit;
72  int clut_width;
73  FFDualInputContext dinput;
74 #endif
75 } LUT3DContext;
76 
77 typedef struct ThreadData {
78  AVFrame *in, *out;
79 } ThreadData;
80 
81 #define OFFSET(x) offsetof(LUT3DContext, x)
82 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
83 #define COMMON_OPTIONS \
84  { "interp", "select interpolation mode", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERPOLATE_TETRAHEDRAL}, 0, NB_INTERP_MODE-1, FLAGS, "interp_mode" }, \
85  { "nearest", "use values from the nearest defined points", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_NEAREST}, INT_MIN, INT_MAX, FLAGS, "interp_mode" }, \
86  { "trilinear", "interpolate values using the 8 points defining a cube", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_TRILINEAR}, INT_MIN, INT_MAX, FLAGS, "interp_mode" }, \
87  { "tetrahedral", "interpolate values using a tetrahedron", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_TETRAHEDRAL}, INT_MIN, INT_MAX, FLAGS, "interp_mode" }, \
88  { NULL }
89 
90 static inline float lerpf(float v0, float v1, float f)
91 {
92  return v0 + (v1 - v0) * f;
93 }
94 
95 static inline struct rgbvec lerp(const struct rgbvec *v0, const struct rgbvec *v1, float f)
96 {
97  struct rgbvec v = {
98  lerpf(v0->r, v1->r, f), lerpf(v0->g, v1->g, f), lerpf(v0->b, v1->b, f)
99  };
100  return v;
101 }
102 
103 #define NEAR(x) ((int)((x) + .5))
104 #define PREV(x) ((int)(x))
105 #define NEXT(x) (FFMIN((int)(x) + 1, lut3d->lutsize - 1))
106 
107 /**
108  * Get the nearest defined point
109  */
110 static inline struct rgbvec interp_nearest(const LUT3DContext *lut3d,
111  const struct rgbvec *s)
112 {
113  return lut3d->lut[NEAR(s->r)][NEAR(s->g)][NEAR(s->b)];
114 }
115 
116 /**
117  * Interpolate using the 8 vertices of a cube
118  * @see https://en.wikipedia.org/wiki/Trilinear_interpolation
119  */
120 static inline struct rgbvec interp_trilinear(const LUT3DContext *lut3d,
121  const struct rgbvec *s)
122 {
123  const int prev[] = {PREV(s->r), PREV(s->g), PREV(s->b)};
124  const int next[] = {NEXT(s->r), NEXT(s->g), NEXT(s->b)};
125  const struct rgbvec d = {s->r - prev[0], s->g - prev[1], s->b - prev[2]};
126  const struct rgbvec c000 = lut3d->lut[prev[0]][prev[1]][prev[2]];
127  const struct rgbvec c001 = lut3d->lut[prev[0]][prev[1]][next[2]];
128  const struct rgbvec c010 = lut3d->lut[prev[0]][next[1]][prev[2]];
129  const struct rgbvec c011 = lut3d->lut[prev[0]][next[1]][next[2]];
130  const struct rgbvec c100 = lut3d->lut[next[0]][prev[1]][prev[2]];
131  const struct rgbvec c101 = lut3d->lut[next[0]][prev[1]][next[2]];
132  const struct rgbvec c110 = lut3d->lut[next[0]][next[1]][prev[2]];
133  const struct rgbvec c111 = lut3d->lut[next[0]][next[1]][next[2]];
134  const struct rgbvec c00 = lerp(&c000, &c100, d.r);
135  const struct rgbvec c10 = lerp(&c010, &c110, d.r);
136  const struct rgbvec c01 = lerp(&c001, &c101, d.r);
137  const struct rgbvec c11 = lerp(&c011, &c111, d.r);
138  const struct rgbvec c0 = lerp(&c00, &c10, d.g);
139  const struct rgbvec c1 = lerp(&c01, &c11, d.g);
140  const struct rgbvec c = lerp(&c0, &c1, d.b);
141  return c;
142 }
143 
144 /**
145  * Tetrahedral interpolation. Based on code found in Truelight Software Library paper.
146  * @see http://www.filmlight.ltd.uk/pdf/whitepapers/FL-TL-TN-0057-SoftwareLib.pdf
147  */
148 static inline struct rgbvec interp_tetrahedral(const LUT3DContext *lut3d,
149  const struct rgbvec *s)
150 {
151  const int prev[] = {PREV(s->r), PREV(s->g), PREV(s->b)};
152  const int next[] = {NEXT(s->r), NEXT(s->g), NEXT(s->b)};
153  const struct rgbvec d = {s->r - prev[0], s->g - prev[1], s->b - prev[2]};
154  const struct rgbvec c000 = lut3d->lut[prev[0]][prev[1]][prev[2]];
155  const struct rgbvec c111 = lut3d->lut[next[0]][next[1]][next[2]];
156  struct rgbvec c;
157  if (d.r > d.g) {
158  if (d.g > d.b) {
159  const struct rgbvec c100 = lut3d->lut[next[0]][prev[1]][prev[2]];
160  const struct rgbvec c110 = lut3d->lut[next[0]][next[1]][prev[2]];
161  c.r = (1-d.r) * c000.r + (d.r-d.g) * c100.r + (d.g-d.b) * c110.r + (d.b) * c111.r;
162  c.g = (1-d.r) * c000.g + (d.r-d.g) * c100.g + (d.g-d.b) * c110.g + (d.b) * c111.g;
163  c.b = (1-d.r) * c000.b + (d.r-d.g) * c100.b + (d.g-d.b) * c110.b + (d.b) * c111.b;
164  } else if (d.r > d.b) {
165  const struct rgbvec c100 = lut3d->lut[next[0]][prev[1]][prev[2]];
166  const struct rgbvec c101 = lut3d->lut[next[0]][prev[1]][next[2]];
167  c.r = (1-d.r) * c000.r + (d.r-d.b) * c100.r + (d.b-d.g) * c101.r + (d.g) * c111.r;
168  c.g = (1-d.r) * c000.g + (d.r-d.b) * c100.g + (d.b-d.g) * c101.g + (d.g) * c111.g;
169  c.b = (1-d.r) * c000.b + (d.r-d.b) * c100.b + (d.b-d.g) * c101.b + (d.g) * c111.b;
170  } else {
171  const struct rgbvec c001 = lut3d->lut[prev[0]][prev[1]][next[2]];
172  const struct rgbvec c101 = lut3d->lut[next[0]][prev[1]][next[2]];
173  c.r = (1-d.b) * c000.r + (d.b-d.r) * c001.r + (d.r-d.g) * c101.r + (d.g) * c111.r;
174  c.g = (1-d.b) * c000.g + (d.b-d.r) * c001.g + (d.r-d.g) * c101.g + (d.g) * c111.g;
175  c.b = (1-d.b) * c000.b + (d.b-d.r) * c001.b + (d.r-d.g) * c101.b + (d.g) * c111.b;
176  }
177  } else {
178  if (d.b > d.g) {
179  const struct rgbvec c001 = lut3d->lut[prev[0]][prev[1]][next[2]];
180  const struct rgbvec c011 = lut3d->lut[prev[0]][next[1]][next[2]];
181  c.r = (1-d.b) * c000.r + (d.b-d.g) * c001.r + (d.g-d.r) * c011.r + (d.r) * c111.r;
182  c.g = (1-d.b) * c000.g + (d.b-d.g) * c001.g + (d.g-d.r) * c011.g + (d.r) * c111.g;
183  c.b = (1-d.b) * c000.b + (d.b-d.g) * c001.b + (d.g-d.r) * c011.b + (d.r) * c111.b;
184  } else if (d.b > d.r) {
185  const struct rgbvec c010 = lut3d->lut[prev[0]][next[1]][prev[2]];
186  const struct rgbvec c011 = lut3d->lut[prev[0]][next[1]][next[2]];
187  c.r = (1-d.g) * c000.r + (d.g-d.b) * c010.r + (d.b-d.r) * c011.r + (d.r) * c111.r;
188  c.g = (1-d.g) * c000.g + (d.g-d.b) * c010.g + (d.b-d.r) * c011.g + (d.r) * c111.g;
189  c.b = (1-d.g) * c000.b + (d.g-d.b) * c010.b + (d.b-d.r) * c011.b + (d.r) * c111.b;
190  } else {
191  const struct rgbvec c010 = lut3d->lut[prev[0]][next[1]][prev[2]];
192  const struct rgbvec c110 = lut3d->lut[next[0]][next[1]][prev[2]];
193  c.r = (1-d.g) * c000.r + (d.g-d.r) * c010.r + (d.r-d.b) * c110.r + (d.b) * c111.r;
194  c.g = (1-d.g) * c000.g + (d.g-d.r) * c010.g + (d.r-d.b) * c110.g + (d.b) * c111.g;
195  c.b = (1-d.g) * c000.b + (d.g-d.r) * c010.b + (d.r-d.b) * c110.b + (d.b) * c111.b;
196  }
197  }
198  return c;
199 }
200 
201 #define DEFINE_INTERP_FUNC(name, nbits) \
202 static int interp_##nbits##_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
203 { \
204  int x, y; \
205  const LUT3DContext *lut3d = ctx->priv; \
206  const ThreadData *td = arg; \
207  const AVFrame *in = td->in; \
208  const AVFrame *out = td->out; \
209  const int direct = out == in; \
210  const int step = lut3d->step; \
211  const uint8_t r = lut3d->rgba_map[R]; \
212  const uint8_t g = lut3d->rgba_map[G]; \
213  const uint8_t b = lut3d->rgba_map[B]; \
214  const uint8_t a = lut3d->rgba_map[A]; \
215  const int slice_start = (in->height * jobnr ) / nb_jobs; \
216  const int slice_end = (in->height * (jobnr+1)) / nb_jobs; \
217  uint8_t *dstrow = out->data[0] + slice_start * out->linesize[0]; \
218  const uint8_t *srcrow = in ->data[0] + slice_start * in ->linesize[0]; \
219  const float scale = (1. / ((1<<nbits) - 1)) * (lut3d->lutsize - 1); \
220  \
221  for (y = slice_start; y < slice_end; y++) { \
222  uint##nbits##_t *dst = (uint##nbits##_t *)dstrow; \
223  const uint##nbits##_t *src = (const uint##nbits##_t *)srcrow; \
224  for (x = 0; x < in->width * step; x += step) { \
225  const struct rgbvec scaled_rgb = {src[x + r] * scale, \
226  src[x + g] * scale, \
227  src[x + b] * scale}; \
228  struct rgbvec vec = interp_##name(lut3d, &scaled_rgb); \
229  dst[x + r] = av_clip_uint##nbits(vec.r * (float)((1<<nbits) - 1)); \
230  dst[x + g] = av_clip_uint##nbits(vec.g * (float)((1<<nbits) - 1)); \
231  dst[x + b] = av_clip_uint##nbits(vec.b * (float)((1<<nbits) - 1)); \
232  if (!direct && step == 4) \
233  dst[x + a] = src[x + a]; \
234  } \
235  dstrow += out->linesize[0]; \
236  srcrow += in ->linesize[0]; \
237  } \
238  return 0; \
239 }
240 
241 DEFINE_INTERP_FUNC(nearest, 8)
242 DEFINE_INTERP_FUNC(trilinear, 8)
243 DEFINE_INTERP_FUNC(tetrahedral, 8)
244 
245 DEFINE_INTERP_FUNC(nearest, 16)
246 DEFINE_INTERP_FUNC(trilinear, 16)
247 DEFINE_INTERP_FUNC(tetrahedral, 16)
248 
249 #define MAX_LINE_SIZE 512
250 
251 static int skip_line(const char *p)
252 {
253  while (*p && av_isspace(*p))
254  p++;
255  return !*p || *p == '#';
256 }
257 
258 #define NEXT_LINE(loop_cond) do { \
259  if (!fgets(line, sizeof(line), f)) { \
260  av_log(ctx, AV_LOG_ERROR, "Unexpected EOF\n"); \
261  return AVERROR_INVALIDDATA; \
262  } \
263 } while (loop_cond)
264 
265 /* Basically r g and b float values on each line, with a facultative 3DLUTSIZE
266  * directive; seems to be generated by Davinci */
267 static int parse_dat(AVFilterContext *ctx, FILE *f)
268 {
269  LUT3DContext *lut3d = ctx->priv;
270  char line[MAX_LINE_SIZE];
271  int i, j, k, size;
272 
273  lut3d->lutsize = size = 33;
274 
275  NEXT_LINE(skip_line(line));
276  if (!strncmp(line, "3DLUTSIZE ", 10)) {
277  size = strtol(line + 10, NULL, 0);
279  av_log(ctx, AV_LOG_ERROR, "Too large or invalid 3D LUT size\n");
280  return AVERROR(EINVAL);
281  }
282  lut3d->lutsize = size;
283  NEXT_LINE(skip_line(line));
284  }
285  for (k = 0; k < size; k++) {
286  for (j = 0; j < size; j++) {
287  for (i = 0; i < size; i++) {
288  struct rgbvec *vec = &lut3d->lut[k][j][i];
289  if (k != 0 || j != 0 || i != 0)
290  NEXT_LINE(skip_line(line));
291  if (sscanf(line, "%f %f %f", &vec->r, &vec->g, &vec->b) != 3)
292  return AVERROR_INVALIDDATA;
293  }
294  }
295  }
296  return 0;
297 }
298 
299 /* Iridas format */
300 static int parse_cube(AVFilterContext *ctx, FILE *f)
301 {
302  LUT3DContext *lut3d = ctx->priv;
303  char line[MAX_LINE_SIZE];
304  float min[3] = {0.0, 0.0, 0.0};
305  float max[3] = {1.0, 1.0, 1.0};
306 
307  while (fgets(line, sizeof(line), f)) {
308  if (!strncmp(line, "LUT_3D_SIZE ", 12)) {
309  int i, j, k;
310  const int size = strtol(line + 12, NULL, 0);
311 
313  av_log(ctx, AV_LOG_ERROR, "Too large or invalid 3D LUT size\n");
314  return AVERROR(EINVAL);
315  }
316  lut3d->lutsize = size;
317  for (k = 0; k < size; k++) {
318  for (j = 0; j < size; j++) {
319  for (i = 0; i < size; i++) {
320  struct rgbvec *vec = &lut3d->lut[i][j][k];
321 
322  do {
323 try_again:
324  NEXT_LINE(0);
325  if (!strncmp(line, "DOMAIN_", 7)) {
326  float *vals = NULL;
327  if (!strncmp(line + 7, "MIN ", 4)) vals = min;
328  else if (!strncmp(line + 7, "MAX ", 4)) vals = max;
329  if (!vals)
330  return AVERROR_INVALIDDATA;
331  sscanf(line + 11, "%f %f %f", vals, vals + 1, vals + 2);
332  av_log(ctx, AV_LOG_DEBUG, "min: %f %f %f | max: %f %f %f\n",
333  min[0], min[1], min[2], max[0], max[1], max[2]);
334  goto try_again;
335  }
336  } while (skip_line(line));
337  if (sscanf(line, "%f %f %f", &vec->r, &vec->g, &vec->b) != 3)
338  return AVERROR_INVALIDDATA;
339  vec->r *= max[0] - min[0];
340  vec->g *= max[1] - min[1];
341  vec->b *= max[2] - min[2];
342  }
343  }
344  }
345  break;
346  }
347  }
348  return 0;
349 }
350 
351 /* Assume 17x17x17 LUT with a 16-bit depth
352  * FIXME: it seems there are various 3dl formats */
353 static int parse_3dl(AVFilterContext *ctx, FILE *f)
354 {
355  char line[MAX_LINE_SIZE];
356  LUT3DContext *lut3d = ctx->priv;
357  int i, j, k;
358  const int size = 17;
359  const float scale = 16*16*16;
360 
361  lut3d->lutsize = size;
362  NEXT_LINE(skip_line(line));
363  for (k = 0; k < size; k++) {
364  for (j = 0; j < size; j++) {
365  for (i = 0; i < size; i++) {
366  int r, g, b;
367  struct rgbvec *vec = &lut3d->lut[k][j][i];
368 
369  NEXT_LINE(skip_line(line));
370  if (sscanf(line, "%d %d %d", &r, &g, &b) != 3)
371  return AVERROR_INVALIDDATA;
372  vec->r = r / scale;
373  vec->g = g / scale;
374  vec->b = b / scale;
375  }
376  }
377  }
378  return 0;
379 }
380 
381 /* Pandora format */
382 static int parse_m3d(AVFilterContext *ctx, FILE *f)
383 {
384  LUT3DContext *lut3d = ctx->priv;
385  float scale;
386  int i, j, k, size, in = -1, out = -1;
387  char line[MAX_LINE_SIZE];
388  uint8_t rgb_map[3] = {0, 1, 2};
389 
390  while (fgets(line, sizeof(line), f)) {
391  if (!strncmp(line, "in", 2)) in = strtol(line + 2, NULL, 0);
392  else if (!strncmp(line, "out", 3)) out = strtol(line + 3, NULL, 0);
393  else if (!strncmp(line, "values", 6)) {
394  const char *p = line + 6;
395 #define SET_COLOR(id) do { \
396  while (av_isspace(*p)) \
397  p++; \
398  switch (*p) { \
399  case 'r': rgb_map[id] = 0; break; \
400  case 'g': rgb_map[id] = 1; break; \
401  case 'b': rgb_map[id] = 2; break; \
402  } \
403  while (*p && !av_isspace(*p)) \
404  p++; \
405 } while (0)
406  SET_COLOR(0);
407  SET_COLOR(1);
408  SET_COLOR(2);
409  break;
410  }
411  }
412 
413  if (in == -1 || out == -1) {
414  av_log(ctx, AV_LOG_ERROR, "in and out must be defined\n");
415  return AVERROR_INVALIDDATA;
416  }
417  if (in < 2 || out < 2 ||
420  av_log(ctx, AV_LOG_ERROR, "invalid in (%d) or out (%d)\n", in, out);
421  return AVERROR_INVALIDDATA;
422  }
423  for (size = 1; size*size*size < in; size++);
424  lut3d->lutsize = size;
425  scale = 1. / (out - 1);
426 
427  for (k = 0; k < size; k++) {
428  for (j = 0; j < size; j++) {
429  for (i = 0; i < size; i++) {
430  struct rgbvec *vec = &lut3d->lut[k][j][i];
431  float val[3];
432 
433  NEXT_LINE(0);
434  if (sscanf(line, "%f %f %f", val, val + 1, val + 2) != 3)
435  return AVERROR_INVALIDDATA;
436  vec->r = val[rgb_map[0]] * scale;
437  vec->g = val[rgb_map[1]] * scale;
438  vec->b = val[rgb_map[2]] * scale;
439  }
440  }
441  }
442  return 0;
443 }
444 
445 static void set_identity_matrix(LUT3DContext *lut3d, int size)
446 {
447  int i, j, k;
448  const float c = 1. / (size - 1);
449 
450  lut3d->lutsize = size;
451  for (k = 0; k < size; k++) {
452  for (j = 0; j < size; j++) {
453  for (i = 0; i < size; i++) {
454  struct rgbvec *vec = &lut3d->lut[k][j][i];
455  vec->r = k * c;
456  vec->g = j * c;
457  vec->b = i * c;
458  }
459  }
460  }
461 }
462 
464 {
465  static const enum AVPixelFormat pix_fmts[] = {
474  };
475  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
476  if (!fmts_list)
477  return AVERROR(ENOMEM);
478  return ff_set_common_formats(ctx, fmts_list);
479 }
480 
481 static int config_input(AVFilterLink *inlink)
482 {
483  int is16bit = 0;
484  LUT3DContext *lut3d = inlink->dst->priv;
486 
487  switch (inlink->format) {
488  case AV_PIX_FMT_RGB48:
489  case AV_PIX_FMT_BGR48:
490  case AV_PIX_FMT_RGBA64:
491  case AV_PIX_FMT_BGRA64:
492  is16bit = 1;
493  }
494 
495  ff_fill_rgba_map(lut3d->rgba_map, inlink->format);
496  lut3d->step = av_get_padded_bits_per_pixel(desc) >> (3 + is16bit);
497 
498 #define SET_FUNC(name) do { \
499  if (is16bit) lut3d->interp = interp_16_##name; \
500  else lut3d->interp = interp_8_##name; \
501 } while (0)
502 
503  switch (lut3d->interpolation) {
504  case INTERPOLATE_NEAREST: SET_FUNC(nearest); break;
505  case INTERPOLATE_TRILINEAR: SET_FUNC(trilinear); break;
506  case INTERPOLATE_TETRAHEDRAL: SET_FUNC(tetrahedral); break;
507  default:
508  av_assert0(0);
509  }
510 
511  return 0;
512 }
513 
515 {
516  AVFilterContext *ctx = inlink->dst;
517  LUT3DContext *lut3d = ctx->priv;
518  AVFilterLink *outlink = inlink->dst->outputs[0];
519  AVFrame *out;
520  ThreadData td;
521 
522  if (av_frame_is_writable(in)) {
523  out = in;
524  } else {
525  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
526  if (!out) {
527  av_frame_free(&in);
528  return NULL;
529  }
530  av_frame_copy_props(out, in);
531  }
532 
533  td.in = in;
534  td.out = out;
535  ctx->internal->execute(ctx, lut3d->interp, &td, NULL, FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
536 
537  if (out != in)
538  av_frame_free(&in);
539 
540  return out;
541 }
542 
543 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
544 {
545  AVFilterLink *outlink = inlink->dst->outputs[0];
546  AVFrame *out = apply_lut(inlink, in);
547  if (!out)
548  return AVERROR(ENOMEM);
549  return ff_filter_frame(outlink, out);
550 }
551 
552 #if CONFIG_LUT3D_FILTER
553 static const AVOption lut3d_options[] = {
554  { "file", "set 3D LUT file name", OFFSET(file), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
556 };
557 
558 AVFILTER_DEFINE_CLASS(lut3d);
559 
560 static av_cold int lut3d_init(AVFilterContext *ctx)
561 {
562  int ret;
563  FILE *f;
564  const char *ext;
565  LUT3DContext *lut3d = ctx->priv;
566 
567  if (!lut3d->file) {
568  set_identity_matrix(lut3d, 32);
569  return 0;
570  }
571 
572  f = fopen(lut3d->file, "r");
573  if (!f) {
574  ret = AVERROR(errno);
575  av_log(ctx, AV_LOG_ERROR, "%s: %s\n", lut3d->file, av_err2str(ret));
576  return ret;
577  }
578 
579  ext = strrchr(lut3d->file, '.');
580  if (!ext) {
581  av_log(ctx, AV_LOG_ERROR, "Unable to guess the format from the extension\n");
582  ret = AVERROR_INVALIDDATA;
583  goto end;
584  }
585  ext++;
586 
587  if (!av_strcasecmp(ext, "dat")) {
588  ret = parse_dat(ctx, f);
589  } else if (!av_strcasecmp(ext, "3dl")) {
590  ret = parse_3dl(ctx, f);
591  } else if (!av_strcasecmp(ext, "cube")) {
592  ret = parse_cube(ctx, f);
593  } else if (!av_strcasecmp(ext, "m3d")) {
594  ret = parse_m3d(ctx, f);
595  } else {
596  av_log(ctx, AV_LOG_ERROR, "Unrecognized '.%s' file type\n", ext);
597  ret = AVERROR(EINVAL);
598  }
599 
600  if (!ret && !lut3d->lutsize) {
601  av_log(ctx, AV_LOG_ERROR, "3D LUT is empty\n");
602  ret = AVERROR_INVALIDDATA;
603  }
604 
605 end:
606  fclose(f);
607  return ret;
608 }
609 
610 static const AVFilterPad lut3d_inputs[] = {
611  {
612  .name = "default",
613  .type = AVMEDIA_TYPE_VIDEO,
614  .filter_frame = filter_frame,
615  .config_props = config_input,
616  },
617  { NULL }
618 };
619 
620 static const AVFilterPad lut3d_outputs[] = {
621  {
622  .name = "default",
623  .type = AVMEDIA_TYPE_VIDEO,
624  },
625  { NULL }
626 };
627 
628 AVFilter ff_vf_lut3d = {
629  .name = "lut3d",
630  .description = NULL_IF_CONFIG_SMALL("Adjust colors using a 3D LUT."),
631  .priv_size = sizeof(LUT3DContext),
632  .init = lut3d_init,
634  .inputs = lut3d_inputs,
635  .outputs = lut3d_outputs,
636  .priv_class = &lut3d_class,
638 };
639 #endif
640 
641 #if CONFIG_HALDCLUT_FILTER
642 
643 static void update_clut(LUT3DContext *lut3d, const AVFrame *frame)
644 {
645  const uint8_t *data = frame->data[0];
646  const int linesize = frame->linesize[0];
647  const int w = lut3d->clut_width;
648  const int step = lut3d->clut_step;
649  const uint8_t *rgba_map = lut3d->clut_rgba_map;
650  const int level = lut3d->lutsize;
651 
652 #define LOAD_CLUT(nbits) do { \
653  int i, j, k, x = 0, y = 0; \
654  \
655  for (k = 0; k < level; k++) { \
656  for (j = 0; j < level; j++) { \
657  for (i = 0; i < level; i++) { \
658  const uint##nbits##_t *src = (const uint##nbits##_t *) \
659  (data + y*linesize + x*step); \
660  struct rgbvec *vec = &lut3d->lut[i][j][k]; \
661  vec->r = src[rgba_map[0]] / (float)((1<<(nbits)) - 1); \
662  vec->g = src[rgba_map[1]] / (float)((1<<(nbits)) - 1); \
663  vec->b = src[rgba_map[2]] / (float)((1<<(nbits)) - 1); \
664  if (++x == w) { \
665  x = 0; \
666  y++; \
667  } \
668  } \
669  } \
670  } \
671 } while (0)
672 
673  if (!lut3d->clut_is16bit) LOAD_CLUT(8);
674  else LOAD_CLUT(16);
675 }
676 
677 
678 static int config_output(AVFilterLink *outlink)
679 {
680  AVFilterContext *ctx = outlink->src;
681  LUT3DContext *lut3d = ctx->priv;
682  int ret;
683 
684  outlink->w = ctx->inputs[0]->w;
685  outlink->h = ctx->inputs[0]->h;
686  outlink->time_base = ctx->inputs[0]->time_base;
687  if ((ret = ff_dualinput_init(ctx, &lut3d->dinput)) < 0)
688  return ret;
689  return 0;
690 }
691 
692 static int filter_frame_hald(AVFilterLink *inlink, AVFrame *inpicref)
693 {
694  LUT3DContext *s = inlink->dst->priv;
695  return ff_dualinput_filter_frame(&s->dinput, inlink, inpicref);
696 }
697 
698 static int request_frame(AVFilterLink *outlink)
699 {
700  LUT3DContext *s = outlink->src->priv;
701  return ff_dualinput_request_frame(&s->dinput, outlink);
702 }
703 
704 static int config_clut(AVFilterLink *inlink)
705 {
706  int size, level, w, h;
707  AVFilterContext *ctx = inlink->dst;
708  LUT3DContext *lut3d = ctx->priv;
710 
711  av_assert0(desc);
712 
713  lut3d->clut_is16bit = 0;
714  switch (inlink->format) {
715  case AV_PIX_FMT_RGB48:
716  case AV_PIX_FMT_BGR48:
717  case AV_PIX_FMT_RGBA64:
718  case AV_PIX_FMT_BGRA64:
719  lut3d->clut_is16bit = 1;
720  }
721 
722  lut3d->clut_step = av_get_padded_bits_per_pixel(desc) >> 3;
723  ff_fill_rgba_map(lut3d->clut_rgba_map, inlink->format);
724 
725  if (inlink->w > inlink->h)
726  av_log(ctx, AV_LOG_INFO, "Padding on the right (%dpx) of the "
727  "Hald CLUT will be ignored\n", inlink->w - inlink->h);
728  else if (inlink->w < inlink->h)
729  av_log(ctx, AV_LOG_INFO, "Padding at the bottom (%dpx) of the "
730  "Hald CLUT will be ignored\n", inlink->h - inlink->w);
731  lut3d->clut_width = w = h = FFMIN(inlink->w, inlink->h);
732 
733  for (level = 1; level*level*level < w; level++);
734  size = level*level*level;
735  if (size != w) {
736  av_log(ctx, AV_LOG_WARNING, "The Hald CLUT width does not match the level\n");
737  return AVERROR_INVALIDDATA;
738  }
739  av_assert0(w == h && w == size);
740  level *= level;
741  if (level > MAX_LEVEL) {
742  const int max_clut_level = sqrt(MAX_LEVEL);
743  const int max_clut_size = max_clut_level*max_clut_level*max_clut_level;
744  av_log(ctx, AV_LOG_ERROR, "Too large Hald CLUT "
745  "(maximum level is %d, or %dx%d CLUT)\n",
746  max_clut_level, max_clut_size, max_clut_size);
747  return AVERROR(EINVAL);
748  }
749  lut3d->lutsize = level;
750 
751  return 0;
752 }
753 
754 static AVFrame *update_apply_clut(AVFilterContext *ctx, AVFrame *main,
755  const AVFrame *second)
756 {
757  AVFilterLink *inlink = ctx->inputs[0];
758  update_clut(ctx->priv, second);
759  return apply_lut(inlink, main);
760 }
761 
762 static av_cold int haldclut_init(AVFilterContext *ctx)
763 {
764  LUT3DContext *lut3d = ctx->priv;
765  lut3d->dinput.process = update_apply_clut;
766  return 0;
767 }
768 
769 static av_cold void haldclut_uninit(AVFilterContext *ctx)
770 {
771  LUT3DContext *lut3d = ctx->priv;
772  ff_dualinput_uninit(&lut3d->dinput);
773 }
774 
775 static const AVOption haldclut_options[] = {
776  { "shortest", "force termination when the shortest input terminates", OFFSET(dinput.shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
777  { "repeatlast", "continue applying the last clut after eos", OFFSET(dinput.repeatlast), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
779 };
780 
781 AVFILTER_DEFINE_CLASS(haldclut);
782 
783 static const AVFilterPad haldclut_inputs[] = {
784  {
785  .name = "main",
786  .type = AVMEDIA_TYPE_VIDEO,
787  .filter_frame = filter_frame_hald,
788  .config_props = config_input,
789  },{
790  .name = "clut",
791  .type = AVMEDIA_TYPE_VIDEO,
792  .filter_frame = filter_frame_hald,
793  .config_props = config_clut,
794  },
795  { NULL }
796 };
797 
798 static const AVFilterPad haldclut_outputs[] = {
799  {
800  .name = "default",
801  .type = AVMEDIA_TYPE_VIDEO,
802  .request_frame = request_frame,
803  .config_props = config_output,
804  },
805  { NULL }
806 };
807 
808 AVFilter ff_vf_haldclut = {
809  .name = "haldclut",
810  .description = NULL_IF_CONFIG_SMALL("Adjust colors using a Hald CLUT."),
811  .priv_size = sizeof(LUT3DContext),
812  .init = haldclut_init,
813  .uninit = haldclut_uninit,
815  .inputs = haldclut_inputs,
816  .outputs = haldclut_outputs,
817  .priv_class = &haldclut_class,
819 };
820 #endif
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:771
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AVFrame * out
Definition: af_headphone.c:146
#define COMMON_OPTIONS
Definition: vf_lut3d.c:83
static int config_input(AVFilterLink *inlink)
Definition: vf_lut3d.c:481
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2333
This structure describes decoded (raw) audio or video data.
Definition: frame.h:194
AVOption.
Definition: opt.h:246
static struct rgbvec interp_trilinear(const LUT3DContext *lut3d, const struct rgbvec *s)
Interpolate using the 8 vertices of a cube.
Definition: vf_lut3d.c:120
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
Main libavfilter public API header.
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
const char * g
Definition: vf_curves.c:112
const char * desc
Definition: nvenc.c:60
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
#define AV_PIX_FMT_RGBA64
Definition: pixfmt.h:341
static int skip_line(const char *p)
Definition: vf_lut3d.c:251
const char * b
Definition: vf_curves.c:113
static av_const int av_isspace(int c)
Locale-independent conversion of ASCII isspace.
Definition: avstring.h:222
#define AV_PIX_FMT_BGRA64
Definition: pixfmt.h:346
static int parse_cube(AVFilterContext *ctx, FILE *f)
Definition: vf_lut3d.c:300
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:253
GLfloat v0
Definition: opengl_enc.c:107
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:92
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:125
const char * name
Pad name.
Definition: internal.h:60
int ff_dualinput_filter_frame(FFDualInputContext *s, AVFilterLink *inlink, AVFrame *in)
Definition: dualinput.c:76
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:331
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
#define MAX_LEVEL
Definition: vf_lut3d.c:57
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1125
AVFrame * in
Definition: af_headphone.c:146
static float lerpf(float v0, float v1, float f)
Definition: vf_lut3d.c:90
uint8_t
#define av_cold
Definition: attributes.h:82
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:279
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:252
AVOptions.
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
static void set_identity_matrix(LUT3DContext *lut3d, int size)
Definition: vf_lut3d.c:445
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:95
static AVFrame * frame
Misc file utilities.
#define NEAR(x)
Definition: vf_lut3d.c:103
static int flags
Definition: log.c:57
#define OFFSET(x)
Definition: vf_lut3d.c:81
#define AV_PIX_FMT_BGR48
Definition: pixfmt.h:342
ptrdiff_t size
Definition: opengl_enc.c:101
void ff_dualinput_uninit(FFDualInputContext *s)
Definition: dualinput.c:87
int main(int argc, char *argv[])
Definition: avio_dir_cmd.c:134
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
#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
#define td
Definition: regdef.h:70
uint8_t rgba_map[4]
Definition: vf_lut3d.c:63
int( avfilter_action_func)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
A function pointer passed to the AVFilterGraph::execute callback to be executed multiple times...
Definition: avfilter.h:823
interp_mode
Definition: vf_lut3d.c:44
#define DEFINE_INTERP_FUNC(name, nbits)
Definition: vf_lut3d.c:201
#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:163
#define NEXT(x)
Definition: vf_lut3d.c:105
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
#define MAX_LINE_SIZE
Definition: vf_lut3d.c:249
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:96
const char * r
Definition: vf_curves.c:111
void * priv
private data for use by the filter
Definition: avfilter.h:338
int av_get_padded_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel for the pixel format described by pixdesc, including any padding ...
Definition: pixdesc.c:2298
static struct rgbvec interp_nearest(const LUT3DContext *lut3d, const struct rgbvec *s)
Get the nearest defined point.
Definition: vf_lut3d.c:110
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
static int config_output(AVFilterLink *outlink)
Definition: af_aecho.c:232
Definition: graph2dot.c:48
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:337
simple assert() macros that are a bit more flexible than ISO C assert().
#define FLAGS
Definition: vf_lut3d.c:82
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:93
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:94
#define SET_COLOR(id)
static int request_frame(AVFilterLink *outlink)
Definition: aeval.c:274
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:831
#define FFMIN(a, b)
Definition: common.h:96
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
AVFormatContext * ctx
Definition: movenc.c:48
int lutsize
Definition: vf_lut3d.c:67
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:65
static const AVFilterPad outputs[]
Definition: af_afftfilt.c:389
static AVFrame * apply_lut(AVFilterLink *inlink, AVFrame *in)
Definition: vf_lut3d.c:514
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:35
#define PREV(x)
Definition: vf_lut3d.c:104
char * file
Definition: vf_lut3d.c:62
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
static const AVFilterPad inputs[]
Definition: af_afftfilt.c:379
misc drawing utilities
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:540
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:225
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
float b
Definition: vf_lut3d.c:52
static struct rgbvec lerp(const struct rgbvec *v0, const struct rgbvec *v1, float f)
Definition: vf_lut3d.c:95
int interpolation
interp_mode
Definition: vf_lut3d.c:61
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
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:254
const char * name
Filter name.
Definition: avfilter.h:148
#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
int ff_dualinput_init(AVFilterContext *ctx, FFDualInputContext *s)
Definition: dualinput.c:43
static struct rgbvec interp_tetrahedral(const LUT3DContext *lut3d, const struct rgbvec *s)
Tetrahedral interpolation.
Definition: vf_lut3d.c:148
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:335
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:363
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:208
uint8_t level
Definition: svq3.c:207
static double c[64]
#define NEXT_LINE(loop_cond)
Definition: vf_lut3d.c:258
static int parse_m3d(AVFilterContext *ctx, FILE *f)
Definition: vf_lut3d.c:382
static int parse_3dl(AVFilterContext *ctx, FILE *f)
Definition: vf_lut3d.c:353
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_lut3d.c:543
avfilter_execute_func * execute
Definition: internal.h:155
static int parse_dat(AVFilterContext *ctx, FILE *f)
Definition: vf_lut3d.c:267
float r
Definition: vf_lut3d.c:52
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:342
Double input streams helper for filters.
A list of supported formats for one end of a filter link.
Definition: formats.h:64
An instance of a filter.
Definition: avfilter.h:323
int ff_dualinput_request_frame(FFDualInputContext *s, AVFilterLink *outlink)
Definition: dualinput.c:82
FILE * out
Definition: movenc.c:54
static int query_formats(AVFilterContext *ctx)
Definition: vf_lut3d.c:463
float g
Definition: vf_lut3d.c:52
internal API functions
#define SET_FUNC(name)
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:251
float min
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:600
avfilter_action_func * interp
Definition: vf_lut3d.c:65
struct rgbvec lut[MAX_LEVEL][MAX_LEVEL][MAX_LEVEL]
Definition: vf_lut3d.c:66