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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_16bit;
70  int step;
71  int negate_alpha; /* only used by negate */
72 } LutContext;
73 
74 #define Y 0
75 #define U 1
76 #define V 2
77 #define R 0
78 #define G 1
79 #define B 2
80 #define A 3
81 
82 #define OFFSET(x) offsetof(LutContext, x)
83 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
84 
85 static const AVOption options[] = {
86  { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
87  { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
88  { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
89  { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
90  { "y", "set Y expression", OFFSET(comp_expr_str[Y]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
91  { "u", "set U expression", OFFSET(comp_expr_str[U]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
92  { "v", "set V expression", OFFSET(comp_expr_str[V]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
93  { "r", "set R expression", OFFSET(comp_expr_str[R]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
94  { "g", "set G expression", OFFSET(comp_expr_str[G]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
95  { "b", "set B expression", OFFSET(comp_expr_str[B]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
96  { "a", "set A expression", OFFSET(comp_expr_str[A]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
97  { NULL }
98 };
99 
100 static av_cold void uninit(AVFilterContext *ctx)
101 {
102  LutContext *s = ctx->priv;
103  int i;
104 
105  for (i = 0; i < 4; i++) {
106  av_expr_free(s->comp_expr[i]);
107  s->comp_expr[i] = NULL;
108  av_freep(&s->comp_expr_str[i]);
109  }
110 }
111 
112 #define YUV_FORMATS \
113  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, \
114  AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P, \
115  AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, \
116  AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, \
117  AV_PIX_FMT_YUVJ440P, \
118  AV_PIX_FMT_YUV444P9LE, AV_PIX_FMT_YUV422P9LE, AV_PIX_FMT_YUV420P9LE, \
119  AV_PIX_FMT_YUV444P10LE, AV_PIX_FMT_YUV422P10LE, AV_PIX_FMT_YUV420P10LE, AV_PIX_FMT_YUV440P10LE, \
120  AV_PIX_FMT_YUV444P12LE, AV_PIX_FMT_YUV422P12LE, AV_PIX_FMT_YUV420P12LE, AV_PIX_FMT_YUV440P12LE, \
121  AV_PIX_FMT_YUV444P14LE, AV_PIX_FMT_YUV422P14LE, AV_PIX_FMT_YUV420P14LE, \
122  AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUV420P16LE, \
123  AV_PIX_FMT_YUVA444P16LE, AV_PIX_FMT_YUVA422P16LE, AV_PIX_FMT_YUVA420P16LE
124 
125 #define RGB_FORMATS \
126  AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA, \
127  AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, \
128  AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24
129 
133 
135 {
136  LutContext *s = ctx->priv;
137 
138  const enum AVPixelFormat *pix_fmts = s->is_rgb ? rgb_pix_fmts :
139  s->is_yuv ? yuv_pix_fmts :
140  all_pix_fmts;
141  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
142  if (!fmts_list)
143  return AVERROR(ENOMEM);
144  return ff_set_common_formats(ctx, fmts_list);
145 }
146 
147 /**
148  * Clip value val in the minval - maxval range.
149  */
150 static double clip(void *opaque, double val)
151 {
152  LutContext *s = opaque;
153  double minval = s->var_values[VAR_MINVAL];
154  double maxval = s->var_values[VAR_MAXVAL];
155 
156  return av_clip(val, minval, maxval);
157 }
158 
159 /**
160  * Compute gamma correction for value val, assuming the minval-maxval
161  * range, val is clipped to a value contained in the same interval.
162  */
163 static double compute_gammaval(void *opaque, double gamma)
164 {
165  LutContext *s = opaque;
166  double val = s->var_values[VAR_CLIPVAL];
167  double minval = s->var_values[VAR_MINVAL];
168  double maxval = s->var_values[VAR_MAXVAL];
169 
170  return pow((val-minval)/(maxval-minval), gamma) * (maxval-minval)+minval;
171 }
172 
173 /**
174  * Compute ITU Rec.709 gamma correction of value val.
175  */
176 static double compute_gammaval709(void *opaque, double gamma)
177 {
178  LutContext *s = opaque;
179  double val = s->var_values[VAR_CLIPVAL];
180  double minval = s->var_values[VAR_MINVAL];
181  double maxval = s->var_values[VAR_MAXVAL];
182  double level = (val - minval) / (maxval - minval);
183  level = level < 0.018 ? 4.5 * level
184  : 1.099 * pow(level, 1.0 / gamma) - 0.099;
185  return level * (maxval - minval) + minval;
186 }
187 
188 static double (* const funcs1[])(void *, double) = {
189  (void *)clip,
190  (void *)compute_gammaval,
191  (void *)compute_gammaval709,
192  NULL
193 };
194 
195 static const char * const funcs1_names[] = {
196  "clip",
197  "gammaval",
198  "gammaval709",
199  NULL
200 };
201 
202 static int config_props(AVFilterLink *inlink)
203 {
204  AVFilterContext *ctx = inlink->dst;
205  LutContext *s = ctx->priv;
206  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
207  uint8_t rgba_map[4]; /* component index -> RGBA color index map */
208  int min[4], max[4];
209  int val, color, ret;
210 
211  s->hsub = desc->log2_chroma_w;
212  s->vsub = desc->log2_chroma_h;
213 
214  s->var_values[VAR_W] = inlink->w;
215  s->var_values[VAR_H] = inlink->h;
216  s->is_16bit = desc->comp[0].depth_minus1 > 7;
217 
218  switch (inlink->format) {
219  case AV_PIX_FMT_YUV410P:
220  case AV_PIX_FMT_YUV411P:
221  case AV_PIX_FMT_YUV420P:
222  case AV_PIX_FMT_YUV422P:
223  case AV_PIX_FMT_YUV440P:
224  case AV_PIX_FMT_YUV444P:
225  case AV_PIX_FMT_YUVA420P:
226  case AV_PIX_FMT_YUVA422P:
227  case AV_PIX_FMT_YUVA444P:
254  min[Y] = 16 * (1 << (desc->comp[0].depth_minus1 - 7));
255  min[U] = 16 * (1 << (desc->comp[1].depth_minus1 - 7));
256  min[V] = 16 * (1 << (desc->comp[2].depth_minus1 - 7));
257  min[A] = 0;
258  max[Y] = 235 * (1 << (desc->comp[0].depth_minus1 - 7));
259  max[U] = 240 * (1 << (desc->comp[1].depth_minus1 - 7));
260  max[V] = 240 * (1 << (desc->comp[2].depth_minus1 - 7));
261  max[A] = (1 << (desc->comp[3].depth_minus1 + 1)) - 1;
262  break;
263  default:
264  min[0] = min[1] = min[2] = min[3] = 0;
265  max[0] = max[1] = max[2] = max[3] = 255;
266  }
267 
268  s->is_yuv = s->is_rgb = 0;
269  if (ff_fmt_is_in(inlink->format, yuv_pix_fmts)) s->is_yuv = 1;
270  else if (ff_fmt_is_in(inlink->format, rgb_pix_fmts)) s->is_rgb = 1;
271 
272  if (s->is_rgb) {
273  ff_fill_rgba_map(rgba_map, inlink->format);
274  s->step = av_get_bits_per_pixel(desc) >> 3;
275  }
276 
277  for (color = 0; color < desc->nb_components; color++) {
278  double res;
279  int comp = s->is_rgb ? rgba_map[color] : color;
280 
281  /* create the parsed expression */
282  av_expr_free(s->comp_expr[color]);
283  s->comp_expr[color] = NULL;
284  ret = av_expr_parse(&s->comp_expr[color], s->comp_expr_str[color],
285  var_names, funcs1_names, funcs1, NULL, NULL, 0, ctx);
286  if (ret < 0) {
287  av_log(ctx, AV_LOG_ERROR,
288  "Error when parsing the expression '%s' for the component %d and color %d.\n",
289  s->comp_expr_str[comp], comp, color);
290  return AVERROR(EINVAL);
291  }
292 
293  /* compute the lut */
294  s->var_values[VAR_MAXVAL] = max[color];
295  s->var_values[VAR_MINVAL] = min[color];
296 
297  for (val = 0; val < (1 << (desc->comp[0].depth_minus1 + 1)); val++) {
298  s->var_values[VAR_VAL] = val;
299  s->var_values[VAR_CLIPVAL] = av_clip(val, min[color], max[color]);
300  s->var_values[VAR_NEGVAL] =
301  av_clip(min[color] + max[color] - s->var_values[VAR_VAL],
302  min[color], max[color]);
303 
304  res = av_expr_eval(s->comp_expr[color], s->var_values, s);
305  if (isnan(res)) {
306  av_log(ctx, AV_LOG_ERROR,
307  "Error when evaluating the expression '%s' for the value %d for the component %d.\n",
308  s->comp_expr_str[color], val, comp);
309  return AVERROR(EINVAL);
310  }
311  s->lut[comp][val] = av_clip((int)res, min[color], max[color]);
312  av_log(ctx, AV_LOG_DEBUG, "val[%d][%d] = %d\n", comp, val, s->lut[comp][val]);
313  }
314  }
315 
316  return 0;
317 }
318 
319 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
320 {
321  AVFilterContext *ctx = inlink->dst;
322  LutContext *s = ctx->priv;
323  AVFilterLink *outlink = ctx->outputs[0];
324  AVFrame *out;
325  int i, j, plane, direct = 0;
326 
327  if (av_frame_is_writable(in)) {
328  direct = 1;
329  out = in;
330  } else {
331  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
332  if (!out) {
333  av_frame_free(&in);
334  return AVERROR(ENOMEM);
335  }
336  av_frame_copy_props(out, in);
337  }
338 
339  if (s->is_rgb) {
340  /* packed */
341  uint8_t *inrow, *outrow, *inrow0, *outrow0;
342  const int w = inlink->w;
343  const int h = in->height;
344  const uint16_t (*tab)[256*256] = (const uint16_t (*)[256*256])s->lut;
345  const int in_linesize = in->linesize[0];
346  const int out_linesize = out->linesize[0];
347  const int step = s->step;
348 
349  inrow0 = in ->data[0];
350  outrow0 = out->data[0];
351 
352  for (i = 0; i < h; i ++) {
353  inrow = inrow0;
354  outrow = outrow0;
355  for (j = 0; j < w; j++) {
356  switch (step) {
357  case 4: outrow[3] = tab[3][inrow[3]]; // Fall-through
358  case 3: outrow[2] = tab[2][inrow[2]]; // Fall-through
359  case 2: outrow[1] = tab[1][inrow[1]]; // Fall-through
360  default: outrow[0] = tab[0][inrow[0]];
361  }
362  outrow += step;
363  inrow += step;
364  }
365  inrow0 += in_linesize;
366  outrow0 += out_linesize;
367  }
368  } else if (s->is_16bit) {
369  // planar yuv >8 bit depth
370  uint16_t *inrow, *outrow;
371 
372  for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
373  int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
374  int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
375  int h = FF_CEIL_RSHIFT(inlink->h, vsub);
376  int w = FF_CEIL_RSHIFT(inlink->w, hsub);
377  const uint16_t *tab = s->lut[plane];
378  const int in_linesize = in->linesize[plane] / 2;
379  const int out_linesize = out->linesize[plane] / 2;
380 
381  inrow = (uint16_t *)in ->data[plane];
382  outrow = (uint16_t *)out->data[plane];
383 
384  for (i = 0; i < h; i++) {
385  for (j = 0; j < w; j++) {
386 #if HAVE_BIGENDIAN
387  outrow[j] = av_bswap16(tab[av_bswap16(inrow[j])]);
388 #else
389  outrow[j] = tab[inrow[j]];
390 #endif
391  }
392  inrow += in_linesize;
393  outrow += out_linesize;
394  }
395  }
396  } else {
397  /* planar 8bit depth */
398  uint8_t *inrow, *outrow;
399 
400  for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
401  int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
402  int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
403  int h = FF_CEIL_RSHIFT(inlink->h, vsub);
404  int w = FF_CEIL_RSHIFT(inlink->w, hsub);
405  const uint16_t *tab = s->lut[plane];
406  const int in_linesize = in->linesize[plane];
407  const int out_linesize = out->linesize[plane];
408 
409  inrow = in ->data[plane];
410  outrow = out->data[plane];
411 
412  for (i = 0; i < h; i++) {
413  for (j = 0; j < w; j++)
414  outrow[j] = tab[inrow[j]];
415  inrow += in_linesize;
416  outrow += out_linesize;
417  }
418  }
419  }
420 
421  if (!direct)
422  av_frame_free(&in);
423 
424  return ff_filter_frame(outlink, out);
425 }
426 
427 static const AVFilterPad inputs[] = {
428  { .name = "default",
429  .type = AVMEDIA_TYPE_VIDEO,
430  .filter_frame = filter_frame,
431  .config_props = config_props,
432  },
433  { NULL }
434 };
435 static const AVFilterPad outputs[] = {
436  { .name = "default",
437  .type = AVMEDIA_TYPE_VIDEO,
438  },
439  { NULL }
440 };
441 
442 #define DEFINE_LUT_FILTER(name_, description_) \
443  AVFilter ff_vf_##name_ = { \
444  .name = #name_, \
445  .description = NULL_IF_CONFIG_SMALL(description_), \
446  .priv_size = sizeof(LutContext), \
447  .priv_class = &name_ ## _class, \
448  .init = name_##_init, \
449  .uninit = uninit, \
450  .query_formats = query_formats, \
451  .inputs = inputs, \
452  .outputs = outputs, \
453  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, \
454  }
455 
456 #if CONFIG_LUT_FILTER
457 
458 #define lut_options options
460 
461 static int lut_init(AVFilterContext *ctx)
462 {
463  return 0;
464 }
465 
466 DEFINE_LUT_FILTER(lut, "Compute and apply a lookup table to the RGB/YUV input video.");
467 #endif
468 
469 #if CONFIG_LUTYUV_FILTER
470 
471 #define lutyuv_options options
472 AVFILTER_DEFINE_CLASS(lutyuv);
473 
474 static av_cold int lutyuv_init(AVFilterContext *ctx)
475 {
476  LutContext *s = ctx->priv;
477 
478  s->is_yuv = 1;
479 
480  return 0;
481 }
482 
483 DEFINE_LUT_FILTER(lutyuv, "Compute and apply a lookup table to the YUV input video.");
484 #endif
485 
486 #if CONFIG_LUTRGB_FILTER
487 
488 #define lutrgb_options options
489 AVFILTER_DEFINE_CLASS(lutrgb);
490 
491 static av_cold int lutrgb_init(AVFilterContext *ctx)
492 {
493  LutContext *s = ctx->priv;
494 
495  s->is_rgb = 1;
496 
497  return 0;
498 }
499 
500 DEFINE_LUT_FILTER(lutrgb, "Compute and apply a lookup table to the RGB input video.");
501 #endif
502 
503 #if CONFIG_NEGATE_FILTER
504 
505 static const AVOption negate_options[] = {
506  { "negate_alpha", NULL, OFFSET(negate_alpha), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
507  { NULL }
508 };
509 
510 AVFILTER_DEFINE_CLASS(negate);
511 
512 static av_cold int negate_init(AVFilterContext *ctx)
513 {
514  LutContext *s = ctx->priv;
515  int i;
516 
517  av_log(ctx, AV_LOG_DEBUG, "negate_alpha:%d\n", s->negate_alpha);
518 
519  for (i = 0; i < 4; i++) {
520  s->comp_expr_str[i] = av_strdup((i == 3 && !s->negate_alpha) ?
521  "val" : "negval");
522  if (!s->comp_expr_str[i]) {
523  uninit(ctx);
524  return AVERROR(ENOMEM);
525  }
526  }
527 
528  return 0;
529 }
530 
531 DEFINE_LUT_FILTER(negate, "Negate input video.");
532 
533 #endif
int plane
Definition: avisynth_c.h:291
#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:634
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
Definition: pixfmt.h:319
const char * s
Definition: avisynth_c.h:631
planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:286
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2129
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
AVOption.
Definition: opt.h:255
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:290
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:171
#define G
Definition: vf_lut.c:78
#define A
Definition: vf_lut.c:80
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:68
Main libavfilter public API header.
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:2081
#define RGB_FORMATS
Definition: vf_lut.c:125
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_lut.c:319
static const AVOption options[]
Definition: vf_lut.c:85
#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:215
static const char *const funcs1_names[]
Definition: vf_lut.c:195
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:653
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:109
planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:140
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:80
static enum AVPixelFormat yuv_pix_fmts[]
Definition: vf_lut.c:130
static double compute_gammaval709(void *opaque, double gamma)
Compute ITU Rec.709 gamma correction of value val.
Definition: vf_lut.c:176
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:69
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian ...
Definition: pixfmt.h:205
static const char *const var_names[]
Definition: vf_lut.c:39
#define R
Definition: vf_lut.c:77
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1158
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:103
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:100
uint8_t
#define av_cold
Definition: attributes.h:74
AVOptions.
static const uint32_t color[16+AV_CLASS_CATEGORY_NB]
Definition: log.c:94
static av_always_inline av_const int isnan(float x)
Definition: libm.h:96
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:292
static double(*const funcs1[])(void *, double)
Definition: vf_lut.c:188
Definition: eval.c:144
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
Definition: pixfmt.h:217
int ff_fmt_is_in(int fmt, const int *fmts)
Tell is a format is contained in the provided list terminated by -1.
Definition: formats.c:254
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:63
planar YUV 4:2:0, 13.5bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:169
#define YUV_FORMATS
Definition: vf_lut.c:112
int is_16bit
Definition: vf_lut.c:69
static enum AVPixelFormat all_pix_fmts[]
Definition: vf_lut.c:132
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:177
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:281
uint16_t depth_minus1
Number of bits in the component minus 1.
Definition: pixdesc.h:57
#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:542
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:89
#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:148
void * priv
private data for use by the filter
Definition: avfilter.h:654
#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:173
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:209
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:67
var_name
Definition: aeval.c:46
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:71
int hsub
Definition: vf_lut.c:66
#define OFFSET(x)
Definition: vf_lut.c:82
#define FF_CEIL_RSHIFT(a, b)
Definition: common.h:57
#define U
Definition: vf_lut.c:75
planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:284
planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:179
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:34
Definition: vf_lut.c:53
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:313
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:493
char * av_strdup(const char *s)
Duplicate the string s.
Definition: mem.c:267
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:199
static const AVFilterPad outputs[]
Definition: vf_lut.c:435
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:280
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
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:321
static int query_formats(AVFilterContext *ctx)
Definition: vf_lut.c:134
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:69
planar YUV 4:2:2 48bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
Definition: pixfmt.h:219
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:221
Definition: vf_lut.c:51
byte swapping routines
int step
Definition: vf_lut.c:70
AVExpr * comp_expr[4]
Definition: vf_lut.c:65
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:648
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:209
planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
Definition: pixfmt.h:213
#define DEFINE_LUT_FILTER(name_, description_)
Definition: vf_lut.c:442
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:182
uint8_t level
Definition: svq3.c:150
planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:175
planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:144
static enum AVPixelFormat rgb_pix_fmts[]
Definition: vf_lut.c:131
static const AVFilterPad inputs[]
Definition: vf_lut.c:427
static int config_props(AVFilterLink *inlink)
Definition: vf_lut.c:202
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:63
planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:288
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_lut.c:100
#define V
Definition: vf_lut.c:76
common internal and external API header
if(ret< 0)
Definition: vf_mcdeint.c:280
static double clip(void *opaque, double val)
Clip value val in the minval - maxval range.
Definition: vf_lut.c:150
#define Y
Definition: vf_lut.c:74
planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:142
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:70
planar YUV 4:2:0 25bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
Definition: pixfmt.h:211
planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:294
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:708
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:334
#define FLAGS
Definition: vf_lut.c:83
A list of supported formats for one end of a filter link.
Definition: formats.h:64
int negate_alpha
Definition: vf_lut.c:71
int vsub
Definition: vf_lut.c:66
static const struct twinvq_data tab
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-> out
An instance of a filter.
Definition: avfilter.h:633
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:163
int height
Definition: frame.h:220
#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:101
planar YUV 4:2:2 27bpp, (1 Cr & Cb sample per 2x1 Y & A samples), little-endian
Definition: pixfmt.h:207
internal API functions
#define B
Definition: vf_lut.c:79
float min
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
int is_yuv
Definition: vf_lut.c:68
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:553
simple arithmetic expression evaluator