FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_lut2.c
Date: 2022-12-05 03:11:11
Exec Total Coverage
Lines: 0 244 0.0%
Functions: 0 21 0.0%
Branches: 0 185 0.0%

Line Branch Exec Source
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/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "avfilter.h"
29 #include "drawutils.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
671