FFmpeg
vf_lut2.c
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1 /*
2  * Copyright (c) 2016 Paul B Mahol
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "config_components.h"
22 
23 #include "libavutil/attributes.h"
24 #include "libavutil/common.h"
25 #include "libavutil/eval.h"
26 #include "libavutil/mem.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/pixdesc.h"
29 #include "avfilter.h"
30 #include "formats.h"
31 #include "internal.h"
32 #include "video.h"
33 #include "framesync.h"
34 
35 static const char *const var_names[] = {
36  "w", ///< width of the input video
37  "h", ///< height of the input video
38  "x", ///< input value for the pixel from input #1
39  "y", ///< input value for the pixel from input #2
40  "bdx", ///< input #1 video bitdepth
41  "bdy", ///< input #2 video bitdepth
42  NULL
43 };
44 
45 enum var_name {
46  VAR_W,
47  VAR_H,
48  VAR_X,
49  VAR_Y,
50  VAR_BITDEPTHX,
51  VAR_BITDEPTHY,
52  VAR_VARS_NB
53 };
54 
55 typedef struct LUT2Context {
56  const AVClass *class;
57  FFFrameSync fs;
58 
59  int odepth;
60  char *comp_expr_str[4];
61 
62  AVExpr *comp_expr[4];
63  double var_values[VAR_VARS_NB];
64  uint16_t *lut[4]; ///< lookup table for each component
65  int width[4], height[4];
66  int widthx[4], heightx[4];
67  int widthy[4], heighty[4];
68  int nb_planesx;
69  int nb_planesy;
70  int nb_planes;
71  int depth, depthx, depthy;
72  int tlut2;
73  AVFrame *prev_frame; /* only used with tlut2 */
74 
75  int (*lut2)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
76 } LUT2Context;
77 
78 typedef struct ThreadData {
79  AVFrame *out, *srcx, *srcy;
80 } ThreadData;
81 
82 #define OFFSET(x) offsetof(LUT2Context, x)
83 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
84 #define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
85 
86 static const AVOption options[] = {
87  { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
88  { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
89  { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
90  { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
91  { "d", "set output depth", OFFSET(odepth), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 16, .flags = FLAGS },
92  { NULL }
93 };
94 
95 static av_cold void uninit(AVFilterContext *ctx)
96 {
97  LUT2Context *s = ctx->priv;
98  int i;
99 
100  ff_framesync_uninit(&s->fs);
101  av_frame_free(&s->prev_frame);
102 
103  for (i = 0; i < 4; i++) {
104  av_expr_free(s->comp_expr[i]);
105  s->comp_expr[i] = NULL;
106  av_freep(&s->comp_expr_str[i]);
107  av_freep(&s->lut[i]);
108  }
109 }
110 
111 #define BIT8_FMTS \
112  AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, \
113  AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, \
114  AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P, \
115  AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, \
116  AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, \
117  AV_PIX_FMT_GRAY8, AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
118 
119 #define BIT9_FMTS \
120  AV_PIX_FMT_GBRP9, AV_PIX_FMT_GRAY9, \
121  AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, \
122  AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
123 
124 #define BIT10_FMTS \
125  AV_PIX_FMT_GRAY10, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10, \
126  AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, \
127  AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
128 
129 #define BIT12_FMTS \
130  AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12, \
131  AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12, \
132  AV_PIX_FMT_GRAY12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRP12,
133 
134 #define BIT14_FMTS \
135  AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, \
136  AV_PIX_FMT_GRAY14, AV_PIX_FMT_GBRP14,
137 
138 #define BIT16_FMTS \
139  AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, \
140  AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, \
141  AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
142 
143 static int query_formats(AVFilterContext *ctx)
144 {
145  LUT2Context *s = ctx->priv;
146  static const enum AVPixelFormat all_pix_fmts[] = {
147  BIT8_FMTS
148  BIT9_FMTS
149  BIT10_FMTS
150  BIT12_FMTS
151  AV_PIX_FMT_NONE
152  };
153  static const enum AVPixelFormat bit8_pix_fmts[] = {
154  BIT8_FMTS
155  AV_PIX_FMT_NONE
156  };
157  static const enum AVPixelFormat bit9_pix_fmts[] = {
158  BIT9_FMTS
159  AV_PIX_FMT_NONE
160  };
161  static const enum AVPixelFormat bit10_pix_fmts[] = {
162  BIT10_FMTS
163  AV_PIX_FMT_NONE
164  };
165  static const enum AVPixelFormat bit12_pix_fmts[] = {
166  BIT12_FMTS
167  AV_PIX_FMT_NONE
168  };
169  static const enum AVPixelFormat bit14_pix_fmts[] = {
170  BIT14_FMTS
171  AV_PIX_FMT_NONE
172  };
173  static const enum AVPixelFormat bit16_pix_fmts[] = {
174  BIT16_FMTS
175  AV_PIX_FMT_NONE
176  };
177  const enum AVPixelFormat *pix_fmts;
178  int ret;
179 
180  if (s->tlut2 || !s->odepth)
181  return ff_set_common_formats_from_list(ctx, all_pix_fmts);
182 
183  ret = ff_formats_ref(ff_make_format_list(all_pix_fmts), &ctx->inputs[0]->outcfg.formats);
184  if (ret < 0)
185  return ret;
186 
187  switch (s->odepth) {
188  case 8: pix_fmts = bit8_pix_fmts; break;
189  case 9: pix_fmts = bit9_pix_fmts; break;
190  case 10: pix_fmts = bit10_pix_fmts; break;
191  case 12: pix_fmts = bit12_pix_fmts; break;
192  case 14: pix_fmts = bit14_pix_fmts; break;
193  case 16: pix_fmts = bit16_pix_fmts; break;
194  default: av_log(ctx, AV_LOG_ERROR, "Unsupported output bit depth %d.\n", s->odepth);
195  return AVERROR(EINVAL);
196  }
197 
198  return ff_formats_ref(ff_make_format_list(pix_fmts), &ctx->outputs[0]->incfg.formats);
199 }
200 
201 static int config_inputx(AVFilterLink *inlink)
202 {
203  AVFilterContext *ctx = inlink->dst;
204  LUT2Context *s = ctx->priv;
205  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
206  int hsub = desc->log2_chroma_w;
207  int vsub = desc->log2_chroma_h;
208 
209  s->nb_planesx = av_pix_fmt_count_planes(inlink->format);
210  s->heightx[1] = s->heightx[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
211  s->heightx[0] = s->heightx[3] = inlink->h;
212  s->widthx[1] = s->widthx[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
213  s->widthx[0] = s->widthx[3] = inlink->w;
214 
215  s->var_values[VAR_W] = inlink->w;
216  s->var_values[VAR_H] = inlink->h;
217  s->depthx = desc->comp[0].depth;
218  s->var_values[VAR_BITDEPTHX] = s->depthx;
219 
220  if (s->tlut2) {
221  s->depthy = desc->comp[0].depth;
222  s->var_values[VAR_BITDEPTHY] = s->depthy;
223  }
224 
225  return 0;
226 }
227 
228 static int config_inputy(AVFilterLink *inlink)
229 {
230  AVFilterContext *ctx = inlink->dst;
231  LUT2Context *s = ctx->priv;
232  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
233  int hsub = desc->log2_chroma_w;
234  int vsub = desc->log2_chroma_h;
235 
236  s->nb_planesy = av_pix_fmt_count_planes(inlink->format);
237  s->depthy = desc->comp[0].depth;
238  s->var_values[VAR_BITDEPTHY] = s->depthy;
239  s->heighty[1] = s->heighty[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
240  s->heighty[0] = s->heighty[3] = inlink->h;
241  s->widthy[1] = s->widthy[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
242  s->widthy[0] = s->widthy[3] = inlink->w;
243 
244  return 0;
245 }
246 
247 #define DEFINE_LUT2(zname, xname, yname, ztype, xtype, ytype, zdiv, xdiv, ydiv) \
248 static int lut2_##zname##_##xname##_##yname(AVFilterContext *ctx, \
249  void *arg, \
250  int jobnr, int nb_jobs) \
251 { \
252  LUT2Context *s = ctx->priv; \
253  ThreadData *td = arg; \
254  AVFrame *out = td->out; \
255  AVFrame *srcx = td->srcx; \
256  AVFrame *srcy = td->srcy; \
257  const int odepth = s->odepth; \
258  int p, y, x; \
259  \
260  for (p = 0; p < s->nb_planes; p++) { \
261  const int slice_start = (s->heightx[p] * jobnr) / nb_jobs; \
262  const int slice_end = (s->heightx[p] * (jobnr+1)) / nb_jobs; \
263  const uint16_t *lut = s->lut[p]; \
264  const xtype *srcxx; \
265  const ytype *srcyy; \
266  ztype *dst; \
267  \
268  dst = (ztype *)(out->data[p] + slice_start * out->linesize[p]); \
269  srcxx = (const xtype *)(srcx->data[p] + slice_start * srcx->linesize[p]);\
270  srcyy = (const ytype *)(srcy->data[p] + slice_start * srcy->linesize[p]);\
271  \
272  for (y = slice_start; y < slice_end; y++) { \
273  for (x = 0; x < s->widthx[p]; x++) { \
274  dst[x] = av_clip_uintp2_c(lut[(srcyy[x] << s->depthx) | srcxx[x]], odepth); \
275  } \
276  \
277  dst += out->linesize[p] / zdiv; \
278  srcxx += srcx->linesize[p] / xdiv; \
279  srcyy += srcy->linesize[p] / ydiv; \
280  } \
281  } \
282  return 0; \
283 }
284 
285 DEFINE_LUT2(8, 8, 8, uint8_t, uint8_t, uint8_t, 1, 1, 1)
286 DEFINE_LUT2(8, 8, 16, uint8_t, uint8_t, uint16_t, 1, 1, 2)
287 DEFINE_LUT2(8, 16, 8, uint8_t, uint16_t, uint8_t, 1, 2, 1)
288 DEFINE_LUT2(8, 16, 16, uint8_t, uint16_t, uint16_t, 1, 2, 2)
289 DEFINE_LUT2(16, 8, 8, uint16_t, uint8_t, uint8_t, 2, 1, 1)
290 DEFINE_LUT2(16, 8, 16, uint16_t, uint8_t, uint16_t, 2, 1, 2)
291 DEFINE_LUT2(16, 16, 8, uint16_t, uint16_t, uint8_t, 2, 2, 1)
292 DEFINE_LUT2(16, 16, 16, uint16_t, uint16_t, uint16_t, 2, 2, 2)
293 
294 static int process_frame(FFFrameSync *fs)
295 {
296  AVFilterContext *ctx = fs->parent;
297  LUT2Context *s = fs->opaque;
298  AVFilterLink *outlink = ctx->outputs[0];
299  AVFrame *out, *srcx = NULL, *srcy = NULL;
300  int ret;
301 
302  if ((ret = ff_framesync_get_frame(&s->fs, 0, &srcx, 0)) < 0 ||
303  (ret = ff_framesync_get_frame(&s->fs, 1, &srcy, 0)) < 0)
304  return ret;
305 
306  if (ctx->is_disabled || !srcy) {
307  out = av_frame_clone(srcx);
308  if (!out)
309  return AVERROR(ENOMEM);
310  } else {
311  ThreadData td;
312 
313  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
314  if (!out)
315  return AVERROR(ENOMEM);
316  av_frame_copy_props(out, srcx);
317 
318  td.out = out;
319  td.srcx = srcx;
320  td.srcy = srcy;
321  ff_filter_execute(ctx, s->lut2, &td, NULL,
322  FFMIN(s->heightx[1], ff_filter_get_nb_threads(ctx)));
323  }
324 
325  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
326 
327  return ff_filter_frame(outlink, out);
328 }
329 
330 static int config_output(AVFilterLink *outlink)
331 {
332  AVFilterContext *ctx = outlink->src;
333  LUT2Context *s = ctx->priv;
334  int p, ret;
335 
336  s->depth = s->depthx + s->depthy;
337  s->nb_planes = s->nb_planesx;
338 
339  s->lut2 = s->depth > 16 ? lut2_16_16_16 : lut2_8_8_8;
340  if (s->odepth) {
341  if (s->depthx == 8 && s->depthy == 8 && s->odepth > 8)
342  s->lut2 = lut2_16_8_8;
343  if (s->depthx > 8 && s->depthy == 8 && s->odepth > 8)
344  s->lut2 = lut2_16_16_8;
345  if (s->depthx == 8 && s->depthy > 8 && s->odepth > 8)
346  s->lut2 = lut2_16_8_16;
347  if (s->depthx == 8 && s->depthy == 8 && s->odepth == 8)
348  s->lut2 = lut2_8_8_8;
349  if (s->depthx > 8 && s->depthy == 8 && s->odepth == 8)
350  s->lut2 = lut2_8_16_8;
351  if (s->depthx == 8 && s->depthy > 8 && s->odepth == 8)
352  s->lut2 = lut2_8_8_16;
353  if (s->depthx > 8 && s->depthy > 8 && s->odepth == 8)
354  s->lut2 = lut2_8_16_16;
355  } else {
356  s->odepth = s->depthx;
357  }
358 
359  for (p = 0; p < s->nb_planes; p++) {
360  if (!s->lut[p])
361  s->lut[p] = av_malloc_array(1 << s->depth, sizeof(uint16_t));
362  if (!s->lut[p])
363  return AVERROR(ENOMEM);
364  }
365 
366  for (p = 0; p < s->nb_planes; p++) {
367  double res;
368  int x, y;
369 
370  /* create the parsed expression */
371  av_expr_free(s->comp_expr[p]);
372  s->comp_expr[p] = NULL;
373  ret = av_expr_parse(&s->comp_expr[p], s->comp_expr_str[p],
374  var_names, NULL, NULL, NULL, NULL, 0, ctx);
375  if (ret < 0) {
376  av_log(ctx, AV_LOG_ERROR,
377  "Error when parsing the expression '%s' for the component %d.\n",
378  s->comp_expr_str[p], p);
379  return AVERROR(EINVAL);
380  }
381 
382  /* compute the lut */
383  for (y = 0; y < (1 << s->depthy); y++) {
384  s->var_values[VAR_Y] = y;
385  for (x = 0; x < (1 << s->depthx); x++) {
386  s->var_values[VAR_X] = x;
387  res = av_expr_eval(s->comp_expr[p], s->var_values, s);
388  if (isnan(res)) {
389  av_log(ctx, AV_LOG_ERROR,
390  "Error when evaluating the expression '%s' for the values %d and %d for the component %d.\n",
391  s->comp_expr_str[p], x, y, p);
392  return AVERROR(EINVAL);
393  }
394 
395  s->lut[p][(y << s->depthx) + x] = res;
396  }
397  }
398  }
399 
400  return 0;
401 }
402 
403 static int lut2_config_output(AVFilterLink *outlink)
404 {
405  AVFilterContext *ctx = outlink->src;
406  LUT2Context *s = ctx->priv;
407  AVFilterLink *srcx = ctx->inputs[0];
408  AVFilterLink *srcy = ctx->inputs[1];
409  FFFrameSyncIn *in;
410  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
411  int hsub = desc->log2_chroma_w;
412  int vsub = desc->log2_chroma_h;
413  int ret;
414 
415  outlink->w = srcx->w;
416  outlink->h = srcx->h;
417  outlink->time_base = srcx->time_base;
418  outlink->sample_aspect_ratio = srcx->sample_aspect_ratio;
419  outlink->frame_rate = srcx->frame_rate;
420 
421  s->nb_planes = av_pix_fmt_count_planes(outlink->format);
422  s->height[1] = s->height[2] = AV_CEIL_RSHIFT(outlink->h, vsub);
423  s->height[0] = s->height[3] = outlink->h;
424  s->width[1] = s->width[2] = AV_CEIL_RSHIFT(outlink->w, hsub);
425  s->width[0] = s->width[3] = outlink->w;
426 
427  if (!s->odepth && srcx->format != srcy->format) {
428  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
429  return AVERROR(EINVAL);
430  }
431 
432  if (srcx->w != srcy->w || srcx->h != srcy->h) {
433  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
434  "(size %dx%d) do not match the corresponding "
435  "second input link %s parameters (size %dx%d)\n",
436  ctx->input_pads[0].name, srcx->w, srcx->h,
437  ctx->input_pads[1].name,
438  srcy->w, srcy->h);
439  return AVERROR(EINVAL);
440  }
441 
442  if (s->nb_planesx != s->nb_planesy) {
443  av_log(ctx, AV_LOG_ERROR, "First input link %s number of planes "
444  "(%d) do not match the corresponding "
445  "second input link %s number of planes (%d)\n",
446  ctx->input_pads[0].name, s->nb_planesx,
447  ctx->input_pads[1].name, s->nb_planesy);
448  return AVERROR(EINVAL);
449  }
450 
451  if (s->nb_planesx != s->nb_planes) {
452  av_log(ctx, AV_LOG_ERROR, "First input link %s number of planes "
453  "(%d) do not match the corresponding "
454  "output link %s number of planes (%d)\n",
455  ctx->input_pads[0].name, s->nb_planesx,
456  ctx->output_pads[0].name, s->nb_planes);
457  return AVERROR(EINVAL);
458  }
459 
460  if (s->widthx[1] != s->widthy[1] || s->heightx[1] != s->heighty[1]) {
461  av_log(ctx, AV_LOG_ERROR, "First input link %s 2nd plane "
462  "(size %dx%d) do not match the corresponding "
463  "second input link %s 2nd plane (size %dx%d)\n",
464  ctx->input_pads[0].name, s->widthx[1], s->heightx[1],
465  ctx->input_pads[1].name,
466  s->widthy[1], s->heighty[1]);
467  return AVERROR(EINVAL);
468  }
469 
470  if (s->widthx[2] != s->widthy[2] || s->heightx[2] != s->heighty[2]) {
471  av_log(ctx, AV_LOG_ERROR, "First input link %s 3rd plane "
472  "(size %dx%d) do not match the corresponding "
473  "second input link %s 3rd plane (size %dx%d)\n",
474  ctx->input_pads[0].name, s->widthx[2], s->heightx[2],
475  ctx->input_pads[1].name,
476  s->widthy[2], s->heighty[2]);
477  return AVERROR(EINVAL);
478  }
479 
480  if (s->widthx[1] != s->width[1] || s->heightx[1] != s->height[1]) {
481  av_log(ctx, AV_LOG_ERROR, "First input link %s 2nd plane "
482  "(size %dx%d) do not match the corresponding "
483  "output link %s 2nd plane (size %dx%d)\n",
484  ctx->input_pads[0].name, s->widthx[1], s->heightx[1],
485  ctx->output_pads[0].name, s->width[1], s->height[1]);
486  return AVERROR(EINVAL);
487  }
488 
489  if (s->widthx[2] != s->width[2] || s->heightx[2] != s->height[2]) {
490  av_log(ctx, AV_LOG_ERROR, "First input link %s 3rd plane "
491  "(size %dx%d) do not match the corresponding "
492  "output link %s 3rd plane (size %dx%d)\n",
493  ctx->input_pads[0].name, s->widthx[2], s->heightx[2],
494  ctx->output_pads[0].name, s->width[2], s->height[2]);
495  return AVERROR(EINVAL);
496  }
497 
498  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
499  return ret;
500 
501  in = s->fs.in;
502  in[0].time_base = srcx->time_base;
503  in[1].time_base = srcy->time_base;
504  in[0].sync = 2;
505  in[0].before = EXT_STOP;
506  in[0].after = EXT_INFINITY;
507  in[1].sync = 1;
508  in[1].before = EXT_STOP;
509  in[1].after = EXT_INFINITY;
510  s->fs.opaque = s;
511  s->fs.on_event = process_frame;
512 
513  if ((ret = config_output(outlink)) < 0)
514  return ret;
515 
516  ret = ff_framesync_configure(&s->fs);
517  outlink->time_base = s->fs.time_base;
518 
519  return ret;
520 }
521 
522 static int activate(AVFilterContext *ctx)
523 {
524  LUT2Context *s = ctx->priv;
525  return ff_framesync_activate(&s->fs);
526 }
527 
528 static const AVFilterPad inputs[] = {
529  {
530  .name = "srcx",
531  .type = AVMEDIA_TYPE_VIDEO,
532  .config_props = config_inputx,
533  },
534  {
535  .name = "srcy",
536  .type = AVMEDIA_TYPE_VIDEO,
537  .config_props = config_inputy,
538  },
539 };
540 
541 static const AVFilterPad outputs[] = {
542  {
543  .name = "default",
544  .type = AVMEDIA_TYPE_VIDEO,
545  .config_props = lut2_config_output,
546  },
547 };
548 
549 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
550  char *res, int res_len, int flags)
551 {
552  int ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
553 
554  if (ret < 0)
555  return ret;
556 
557  return config_output(ctx->outputs[0]);
558 }
559 
560 #define lut2_options options
561 
562 FRAMESYNC_DEFINE_CLASS(lut2, LUT2Context, fs);
563 
564 const AVFilter ff_vf_lut2 = {
565  .name = "lut2",
566  .description = NULL_IF_CONFIG_SMALL("Compute and apply a lookup table from two video inputs."),
567  .preinit = lut2_framesync_preinit,
568  .priv_size = sizeof(LUT2Context),
569  .priv_class = &lut2_class,
570  .uninit = uninit,
571  .activate = activate,
572  FILTER_INPUTS(inputs),
573  FILTER_OUTPUTS(outputs),
574  FILTER_QUERY_FUNC(query_formats),
575  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
576  AVFILTER_FLAG_SLICE_THREADS,
577  .process_command = process_command,
578 };
579 
580 #if CONFIG_TLUT2_FILTER
581 
582 static av_cold int init(AVFilterContext *ctx)
583 {
584  LUT2Context *s = ctx->priv;
585 
586  s->tlut2 = !strcmp(ctx->filter->name, "tlut2");
587 
588  return 0;
589 }
590 
591 static int tlut2_filter_frame(AVFilterLink *inlink, AVFrame *frame)
592 {
593  AVFilterContext *ctx = inlink->dst;
594  LUT2Context *s = ctx->priv;
595  AVFilterLink *outlink = ctx->outputs[0];
596 
597  if (s->prev_frame) {
598  AVFrame *out;
599 
600  if (ctx->is_disabled) {
601  out = av_frame_clone(frame);
602  } else {
603  ThreadData td;
604 
605  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
606  if (!out) {
607  av_frame_free(&s->prev_frame);
608  s->prev_frame = frame;
609  return AVERROR(ENOMEM);
610  }
611 
612  av_frame_copy_props(out, frame);
613 
614  td.out = out;
615  td.srcx = frame;
616  td.srcy = s->prev_frame;
617  ff_filter_execute(ctx, s->lut2, &td, NULL,
618  FFMIN(s->heightx[1], ff_filter_get_nb_threads(ctx)));
619  }
620  av_frame_free(&s->prev_frame);
621  s->prev_frame = frame;
622  return ff_filter_frame(outlink, out);
623  }
624  s->prev_frame = frame;
625  return 0;
626 }
627 
628 static const AVOption tlut2_options[] = {
629  { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
630  { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
631  { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
632  { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
633  { NULL }
634 };
635 
636 AVFILTER_DEFINE_CLASS(tlut2);
637 
638 static const AVFilterPad tlut2_inputs[] = {
639  {
640  .name = "default",
641  .type = AVMEDIA_TYPE_VIDEO,
642  .filter_frame = tlut2_filter_frame,
643  .config_props = config_inputx,
644  },
645 };
646 
647 static const AVFilterPad tlut2_outputs[] = {
648  {
649  .name = "default",
650  .type = AVMEDIA_TYPE_VIDEO,
651  .config_props = config_output,
652  },
653 };
654 
655 const AVFilter ff_vf_tlut2 = {
656  .name = "tlut2",
657  .description = NULL_IF_CONFIG_SMALL("Compute and apply a lookup table from two successive frames."),
658  .priv_size = sizeof(LUT2Context),
659  .priv_class = &tlut2_class,
660  .init = init,
661  .uninit = uninit,
662  FILTER_INPUTS(tlut2_inputs),
663  FILTER_OUTPUTS(tlut2_outputs),
664  FILTER_QUERY_FUNC(query_formats),
665  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
666  AVFILTER_FLAG_SLICE_THREADS,
667  .process_command = process_command,
668 };
669 
670 #endif
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:112
FFFrameSyncIn::time_base
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:117
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:134
td
#define td
Definition: regdef.h:70
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_lut2.c:330
BIT8_FMTS
#define BIT8_FMTS
Definition: vf_lut2.c:111
VAR_VARS_NB
@ VAR_VARS_NB
Definition: vf_lut2.c:52
LUT2Context::lut2
int(* lut2)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_lut2.c:75
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
var_name
var_name
Definition: noise.c:47
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:436
BIT14_FMTS
#define BIT14_FMTS
Definition: vf_lut2.c:134
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:304
out
FILE * out
Definition: movenc.c:55
VAR_BITDEPTHY
@ VAR_BITDEPTHY
Definition: vf_lut2.c:51
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1015
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2965
ff_framesync_get_frame
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:267
LUT2Context::fs
FFFrameSync fs
Definition: vf_lut2.c:57
LUT2Context::depthx
int depthx
Definition: vf_lut2.c:71
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:160
LUT2Context
Definition: vf_lut2.c:55
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:374
pixdesc.h
AVOption
AVOption.
Definition: opt.h:346
LUT2Context::tlut2
int tlut2
Definition: vf_lut2.c:72
FILTER_QUERY_FUNC
#define FILTER_QUERY_FUNC(func)
Definition: internal.h:159
LUT2Context::widthx
int widthx[4]
Definition: vf_lut2.c:66
ff_vf_tlut2
const AVFilter ff_vf_tlut2
DEFINE_LUT2
#define DEFINE_LUT2(zname, xname, yname, ztype, xtype, ytype, zdiv, xdiv, ydiv)
Definition: vf_lut2.c:247
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
FFFrameSync
Frame sync structure.
Definition: framesync.h:168
EXT_INFINITY
@ EXT_INFINITY
Extend the frame to infinity.
Definition: framesync.h:75
ThreadData::out
AVFrame * out
Definition: af_adeclick.c:527
config_inputx
static int config_inputx(AVFilterLink *inlink)
Definition: vf_lut2.c:201
video.h
VAR_H
@ VAR_H
Definition: vf_lut2.c:47
ThreadData::srcx
AVFrame * srcx
Definition: vf_lut2.c:79
LUT2Context::heightx
int heightx[4]
Definition: vf_lut2.c:66
hsub
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:74
formats.h
av_expr_parse
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:710
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3005
EXT_STOP
@ EXT_STOP
Completely stop all streams with this one.
Definition: framesync.h:65
LUT2Context::depthy
int depthy
Definition: vf_lut2.c:71
FFFrameSyncIn
Input stream structure.
Definition: framesync.h:102
LUT2Context::depth
int depth
Definition: vf_lut2.c:71
FFFrameSyncIn::sync
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events.
Definition: framesync.h:160
process_frame
static int process_frame(FFFrameSync *fs)
Definition: vf_lut2.c:294
LUT2Context::height
int height[4]
Definition: vf_lut2.c:65
av_expr_free
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:358
LUT2Context::prev_frame
AVFrame * prev_frame
Definition: vf_lut2.c:73
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
LUT2Context::odepth
int odepth
Definition: vf_lut2.c:59
LUT2Context::var_values
double var_values[VAR_VARS_NB]
Definition: vf_lut2.c:63
var_names
static const char *const var_names[]
Definition: vf_lut2.c:35
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FLAGS
#define FLAGS
Definition: vf_lut2.c:83
av_cold
#define av_cold
Definition: attributes.h:90
activate
static int activate(AVFilterContext *ctx)
Definition: vf_lut2.c:522
s
#define s(width, name)
Definition: cbs_vp9.c:198
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_lut2.c:549
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:59
TFLAGS
#define TFLAGS
Definition: vf_lut2.c:84
ff_formats_ref
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add *ref as a new reference to formats.
Definition: formats.c:679
LUT2Context::nb_planesx
int nb_planesx
Definition: vf_lut2.c:68
ff_set_common_formats_from_list
int ff_set_common_formats_from_list(AVFilterContext *ctx, const int *fmts)
Equivalent to ff_set_common_formats(ctx, ff_make_format_list(fmts))
Definition: formats.c:874
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_lut2.c:95
OFFSET
#define OFFSET(x)
Definition: vf_lut2.c:82
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:304
ctx
AVFormatContext * ctx
Definition: movenc.c:49
av_expr_eval
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:792
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:593
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
AVExpr
Definition: eval.c:158
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:182
arg
const char * arg
Definition: jacosubdec.c:67
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:709
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:200
LUT2Context::width
int width[4]
Definition: vf_lut2.c:65
lut2_config_output
static int lut2_config_output(AVFilterLink *outlink)
Definition: vf_lut2.c:403
BIT9_FMTS
#define BIT9_FMTS
Definition: vf_lut2.c:119
isnan
#define isnan(x)
Definition: libm.h:340
VAR_X
@ VAR_X
Definition: vf_lut2.c:48
LUT2Context::widthy
int widthy[4]
Definition: vf_lut2.c:67
LUT2Context::comp_expr
AVExpr * comp_expr[4]
Definition: vf_lut2.c:62
LUT2Context::lut
uint16_t * lut[4]
lookup table for each component
Definition: vf_lut2.c:64
inputs
static const AVFilterPad inputs[]
Definition: vf_lut2.c:528
VAR_W
@ VAR_W
Definition: vf_lut2.c:46
eval.h
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts.c:366
BIT10_FMTS
#define BIT10_FMTS
Definition: vf_lut2.c:124
BIT16_FMTS
#define BIT16_FMTS
Definition: vf_lut2.c:138
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:94
ff_filter_process_command
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
Definition: avfilter.c:887
VAR_BITDEPTHX
@ VAR_BITDEPTHX
Definition: vf_lut2.c:50
attributes.h
all_pix_fmts
static enum AVPixelFormat all_pix_fmts[]
Definition: jpeg2000dec.c:181
options
static const AVOption options[]
Definition: vf_lut2.c:86
internal.h
AVFILTER_DEFINE_CLASS
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:323
LUT2Context::heighty
int heighty[4]
Definition: vf_lut2.c:67
LUT2Context::comp_expr_str
char * comp_expr_str[4]
Definition: vf_lut2.c:60
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:31
LUT2Context::nb_planesy
int nb_planesy
Definition: vf_lut2.c:69
common.h
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:827
ThreadData
Used for passing data between threads.
Definition: dsddec.c:71
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
config_inputy
static int config_inputy(AVFilterLink *inlink)
Definition: vf_lut2.c:228
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
AVFilter
Filter definition.
Definition: avfilter.h:166
outputs
static const AVFilterPad outputs[]
Definition: vf_lut2.c:541
ret
ret
Definition: filter_design.txt:187
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
ff_framesync_init
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:86
FFFrameSyncIn::before
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:107
ff_vf_lut2
const AVFilter ff_vf_lut2
Definition: vf_lut2.c:564
framesync.h
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:235
avfilter.h
ThreadData::srcy
AVFrame * srcy
Definition: vf_lut2.c:79
BIT12_FMTS
#define BIT12_FMTS
Definition: vf_lut2.c:129
AVFilterContext
An instance of a filter.
Definition: avfilter.h:407
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
desc
const char * desc
Definition: libsvtav1.c:75
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
mem.h
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
LUT2Context::nb_planes
int nb_planes
Definition: vf_lut2.c:70
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#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:155
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:474
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
FFFrameSyncIn::after
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:112
ff_framesync_activate
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:355
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:239
ff_filter_execute
static av_always_inline int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: internal.h:134
int
int
Definition: ffmpeg_filter.c:424
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_lut2.c:143
VAR_Y
@ VAR_Y
Definition: vf_lut2.c:49
FRAMESYNC_DEFINE_CLASS
FRAMESYNC_DEFINE_CLASS(lut2, LUT2Context, fs)
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