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 "libavutil/attributes.h"
22 #include "libavutil/common.h"
23 #include "libavutil/eval.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixdesc.h"
26 #include "avfilter.h"
27 #include "drawutils.h"
28 #include "formats.h"
29 #include "internal.h"
30 #include "video.h"
31 #include "framesync.h"
32
33 static const char *const var_names[] = {
34 "w", ///< width of the input video
35 "h", ///< height of the input video
36 "x", ///< input value for the pixel from input #1
37 "y", ///< input value for the pixel from input #2
38 "bdx", ///< input #1 video bitdepth
39 "bdy", ///< input #2 video bitdepth
40 NULL
41 };
42
43 enum var_name {
44 VAR_W,
45 VAR_H,
46 VAR_X,
47 VAR_Y,
48 VAR_BITDEPTHX,
49 VAR_BITDEPTHY,
50 VAR_VARS_NB
51 };
52
53 typedef struct LUT2Context {
54 const AVClass *class;
55 FFFrameSync fs;
56
57 int odepth;
58 char *comp_expr_str[4];
59
60 AVExpr *comp_expr[4];
61 double var_values[VAR_VARS_NB];
62 uint16_t *lut[4]; ///< lookup table for each component
63 int width[4], height[4];
64 int widthx[4], heightx[4];
65 int widthy[4], heighty[4];
66 int nb_planesx;
67 int nb_planesy;
68 int nb_planes;
69 int depth, depthx, depthy;
70 int tlut2;
71 AVFrame *prev_frame; /* only used with tlut2 */
72
73 int (*lut2)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
74 } LUT2Context;
75
76 typedef struct ThreadData {
77 AVFrame *out, *srcx, *srcy;
78 } ThreadData;
79
80 #define OFFSET(x) offsetof(LUT2Context, x)
81 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
82 #define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
83
84 static const AVOption options[] = {
85 { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
86 { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
87 { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
88 { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
89 { "d", "set output depth", OFFSET(odepth), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 16, .flags = FLAGS },
90 { NULL }
91 };
92
uninit(AVFilterContext * ctx)93 static av_cold void uninit(AVFilterContext *ctx)
94 {
95 LUT2Context *s = ctx->priv;
96 int i;
97
98 ff_framesync_uninit(&s->fs);
99 av_frame_free(&s->prev_frame);
100
101 for (i = 0; i < 4; i++) {
102 av_expr_free(s->comp_expr[i]);
103 s->comp_expr[i] = NULL;
104 av_freep(&s->comp_expr_str[i]);
105 av_freep(&s->lut[i]);
106 }
107 }
108
109 #define BIT8_FMTS \
110 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, \
111 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, \
112 AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P, \
113 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, \
114 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, \
115 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
116
117 #define BIT9_FMTS \
118 AV_PIX_FMT_GBRP9, AV_PIX_FMT_GRAY9, \
119 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, \
120 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
121
122 #define BIT10_FMTS \
123 AV_PIX_FMT_GRAY10, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10, \
124 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, \
125 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
126
127 #define BIT12_FMTS \
128 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12, \
129 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12, \
130 AV_PIX_FMT_GRAY12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRP12,
131
132 #define BIT14_FMTS \
133 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, \
134 AV_PIX_FMT_GRAY14, AV_PIX_FMT_GBRP14,
135
136 #define BIT16_FMTS \
137 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, \
138 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, \
139 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
140
query_formats(AVFilterContext * ctx)141 static int query_formats(AVFilterContext *ctx)
142 {
143 LUT2Context *s = ctx->priv;
144 static const enum AVPixelFormat all_pix_fmts[] = {
145 BIT8_FMTS
146 BIT9_FMTS
147 BIT10_FMTS
148 BIT12_FMTS
149 AV_PIX_FMT_NONE
150 };
151 static const enum AVPixelFormat bit8_pix_fmts[] = {
152 BIT8_FMTS
153 AV_PIX_FMT_NONE
154 };
155 static const enum AVPixelFormat bit9_pix_fmts[] = {
156 BIT9_FMTS
157 AV_PIX_FMT_NONE
158 };
159 static const enum AVPixelFormat bit10_pix_fmts[] = {
160 BIT10_FMTS
161 AV_PIX_FMT_NONE
162 };
163 static const enum AVPixelFormat bit12_pix_fmts[] = {
164 BIT12_FMTS
165 AV_PIX_FMT_NONE
166 };
167 static const enum AVPixelFormat bit14_pix_fmts[] = {
168 BIT14_FMTS
169 AV_PIX_FMT_NONE
170 };
171 static const enum AVPixelFormat bit16_pix_fmts[] = {
172 BIT16_FMTS
173 AV_PIX_FMT_NONE
174 };
175 const enum AVPixelFormat *pix_fmts;
176 int ret;
177
178 if (s->tlut2 || !s->odepth)
179 return ff_set_common_formats(ctx, ff_make_format_list(all_pix_fmts));
180
181 ret = ff_formats_ref(ff_make_format_list(all_pix_fmts), &ctx->inputs[0]->outcfg.formats);
182 if (ret < 0)
183 return ret;
184
185 switch (s->odepth) {
186 case 8: pix_fmts = bit8_pix_fmts; break;
187 case 9: pix_fmts = bit9_pix_fmts; break;
188 case 10: pix_fmts = bit10_pix_fmts; break;
189 case 12: pix_fmts = bit12_pix_fmts; break;
190 case 14: pix_fmts = bit14_pix_fmts; break;
191 case 16: pix_fmts = bit16_pix_fmts; break;
192 default: av_log(ctx, AV_LOG_ERROR, "Unsupported output bit depth %d.\n", s->odepth);
193 return AVERROR(EINVAL);
194 }
195
196 return ff_formats_ref(ff_make_format_list(pix_fmts), &ctx->outputs[0]->incfg.formats);
197 }
198
config_inputx(AVFilterLink * inlink)199 static int config_inputx(AVFilterLink *inlink)
200 {
201 AVFilterContext *ctx = inlink->dst;
202 LUT2Context *s = ctx->priv;
203 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
204 int hsub = desc->log2_chroma_w;
205 int vsub = desc->log2_chroma_h;
206
207 s->nb_planesx = av_pix_fmt_count_planes(inlink->format);
208 s->heightx[1] = s->heightx[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
209 s->heightx[0] = s->heightx[3] = inlink->h;
210 s->widthx[1] = s->widthx[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
211 s->widthx[0] = s->widthx[3] = inlink->w;
212
213 s->var_values[VAR_W] = inlink->w;
214 s->var_values[VAR_H] = inlink->h;
215 s->depthx = desc->comp[0].depth;
216 s->var_values[VAR_BITDEPTHX] = s->depthx;
217
218 if (s->tlut2) {
219 s->depthy = desc->comp[0].depth;
220 s->var_values[VAR_BITDEPTHY] = s->depthy;
221 }
222
223 return 0;
224 }
225
config_inputy(AVFilterLink * inlink)226 static int config_inputy(AVFilterLink *inlink)
227 {
228 AVFilterContext *ctx = inlink->dst;
229 LUT2Context *s = ctx->priv;
230 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
231 int hsub = desc->log2_chroma_w;
232 int vsub = desc->log2_chroma_h;
233
234 s->nb_planesy = av_pix_fmt_count_planes(inlink->format);
235 s->depthy = desc->comp[0].depth;
236 s->var_values[VAR_BITDEPTHY] = s->depthy;
237 s->heighty[1] = s->heighty[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
238 s->heighty[0] = s->heighty[3] = inlink->h;
239 s->widthy[1] = s->widthy[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
240 s->widthy[0] = s->widthy[3] = inlink->w;
241
242 return 0;
243 }
244
245 #define DEFINE_LUT2(zname, xname, yname, ztype, xtype, ytype, zdiv, xdiv, ydiv) \
246 static int lut2_##zname##_##xname##_##yname(AVFilterContext *ctx, \
247 void *arg, \
248 int jobnr, int nb_jobs) \
249 { \
250 LUT2Context *s = ctx->priv; \
251 ThreadData *td = arg; \
252 AVFrame *out = td->out; \
253 AVFrame *srcx = td->srcx; \
254 AVFrame *srcy = td->srcy; \
255 const int odepth = s->odepth; \
256 int p, y, x; \
257 \
258 for (p = 0; p < s->nb_planes; p++) { \
259 const int slice_start = (s->heightx[p] * jobnr) / nb_jobs; \
260 const int slice_end = (s->heightx[p] * (jobnr+1)) / nb_jobs; \
261 const uint16_t *lut = s->lut[p]; \
262 const xtype *srcxx; \
263 const ytype *srcyy; \
264 ztype *dst; \
265 \
266 dst = (ztype *)(out->data[p] + slice_start * out->linesize[p]); \
267 srcxx = (const xtype *)(srcx->data[p] + slice_start * srcx->linesize[p]);\
268 srcyy = (const ytype *)(srcy->data[p] + slice_start * srcy->linesize[p]);\
269 \
270 for (y = slice_start; y < slice_end; y++) { \
271 for (x = 0; x < s->widthx[p]; x++) { \
272 dst[x] = av_clip_uintp2_c(lut[(srcyy[x] << s->depthx) | srcxx[x]], odepth); \
273 } \
274 \
275 dst += out->linesize[p] / zdiv; \
276 srcxx += srcx->linesize[p] / xdiv; \
277 srcyy += srcy->linesize[p] / ydiv; \
278 } \
279 } \
280 return 0; \
281 }
282
283 DEFINE_LUT2(8, 8, 8, uint8_t, uint8_t, uint8_t, 1, 1, 1)
284 DEFINE_LUT2(8, 8, 16, uint8_t, uint8_t, uint16_t, 1, 1, 2)
285 DEFINE_LUT2(8, 16, 8, uint8_t, uint16_t, uint8_t, 1, 2, 1)
286 DEFINE_LUT2(8, 16, 16, uint8_t, uint16_t, uint16_t, 1, 2, 2)
287 DEFINE_LUT2(16, 8, 8, uint16_t, uint8_t, uint8_t, 2, 1, 1)
288 DEFINE_LUT2(16, 8, 16, uint16_t, uint8_t, uint16_t, 2, 1, 2)
289 DEFINE_LUT2(16, 16, 8, uint16_t, uint16_t, uint8_t, 2, 2, 1)
290 DEFINE_LUT2(16, 16, 16, uint16_t, uint16_t, uint16_t, 2, 2, 2)
291
process_frame(FFFrameSync * fs)292 static int process_frame(FFFrameSync *fs)
293 {
294 AVFilterContext *ctx = fs->parent;
295 LUT2Context *s = fs->opaque;
296 AVFilterLink *outlink = ctx->outputs[0];
297 AVFrame *out, *srcx = NULL, *srcy = NULL;
298 int ret;
299
300 if ((ret = ff_framesync_get_frame(&s->fs, 0, &srcx, 0)) < 0 ||
301 (ret = ff_framesync_get_frame(&s->fs, 1, &srcy, 0)) < 0)
302 return ret;
303
304 if (ctx->is_disabled || !srcy) {
305 out = av_frame_clone(srcx);
306 if (!out)
307 return AVERROR(ENOMEM);
308 } else {
309 ThreadData td;
310
311 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
312 if (!out)
313 return AVERROR(ENOMEM);
314 av_frame_copy_props(out, srcx);
315
316 td.out = out;
317 td.srcx = srcx;
318 td.srcy = srcy;
319 ctx->internal->execute(ctx, s->lut2, &td, NULL, FFMIN(s->heightx[1], ff_filter_get_nb_threads(ctx)));
320 }
321
322 out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
323
324 return ff_filter_frame(outlink, out);
325 }
326
config_output(AVFilterLink * outlink)327 static int config_output(AVFilterLink *outlink)
328 {
329 AVFilterContext *ctx = outlink->src;
330 LUT2Context *s = ctx->priv;
331 int p, ret;
332
333 s->depth = s->depthx + s->depthy;
334 s->nb_planes = s->nb_planesx;
335
336 s->lut2 = s->depth > 16 ? lut2_16_16_16 : lut2_8_8_8;
337 if (s->odepth) {
338 if (s->depthx == 8 && s->depthy == 8 && s->odepth > 8)
339 s->lut2 = lut2_16_8_8;
340 if (s->depthx > 8 && s->depthy == 8 && s->odepth > 8)
341 s->lut2 = lut2_16_16_8;
342 if (s->depthx == 8 && s->depthy > 8 && s->odepth > 8)
343 s->lut2 = lut2_16_8_16;
344 if (s->depthx == 8 && s->depthy == 8 && s->odepth == 8)
345 s->lut2 = lut2_8_8_8;
346 if (s->depthx > 8 && s->depthy == 8 && s->odepth == 8)
347 s->lut2 = lut2_8_16_8;
348 if (s->depthx == 8 && s->depthy > 8 && s->odepth == 8)
349 s->lut2 = lut2_8_8_16;
350 if (s->depthx > 8 && s->depthy > 8 && s->odepth == 8)
351 s->lut2 = lut2_8_16_16;
352 } else {
353 s->odepth = s->depthx;
354 }
355
356 for (p = 0; p < s->nb_planes; p++) {
357 if (!s->lut[p])
358 s->lut[p] = av_malloc_array(1 << s->depth, sizeof(uint16_t));
359 if (!s->lut[p])
360 return AVERROR(ENOMEM);
361 }
362
363 for (p = 0; p < s->nb_planes; p++) {
364 double res;
365 int x, y;
366
367 /* create the parsed expression */
368 av_expr_free(s->comp_expr[p]);
369 s->comp_expr[p] = NULL;
370 ret = av_expr_parse(&s->comp_expr[p], s->comp_expr_str[p],
371 var_names, NULL, NULL, NULL, NULL, 0, ctx);
372 if (ret < 0) {
373 av_log(ctx, AV_LOG_ERROR,
374 "Error when parsing the expression '%s' for the component %d.\n",
375 s->comp_expr_str[p], p);
376 return AVERROR(EINVAL);
377 }
378
379 /* compute the lut */
380 for (y = 0; y < (1 << s->depthy); y++) {
381 s->var_values[VAR_Y] = y;
382 for (x = 0; x < (1 << s->depthx); x++) {
383 s->var_values[VAR_X] = x;
384 res = av_expr_eval(s->comp_expr[p], s->var_values, s);
385 if (isnan(res)) {
386 av_log(ctx, AV_LOG_ERROR,
387 "Error when evaluating the expression '%s' for the values %d and %d for the component %d.\n",
388 s->comp_expr_str[p], x, y, p);
389 return AVERROR(EINVAL);
390 }
391
392 s->lut[p][(y << s->depthx) + x] = res;
393 }
394 }
395 }
396
397 return 0;
398 }
399
lut2_config_output(AVFilterLink * outlink)400 static int lut2_config_output(AVFilterLink *outlink)
401 {
402 AVFilterContext *ctx = outlink->src;
403 LUT2Context *s = ctx->priv;
404 AVFilterLink *srcx = ctx->inputs[0];
405 AVFilterLink *srcy = ctx->inputs[1];
406 FFFrameSyncIn *in;
407 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
408 int hsub = desc->log2_chroma_w;
409 int vsub = desc->log2_chroma_h;
410 int ret;
411
412 outlink->w = srcx->w;
413 outlink->h = srcx->h;
414 outlink->time_base = srcx->time_base;
415 outlink->sample_aspect_ratio = srcx->sample_aspect_ratio;
416 outlink->frame_rate = srcx->frame_rate;
417
418 s->nb_planes = av_pix_fmt_count_planes(outlink->format);
419 s->height[1] = s->height[2] = AV_CEIL_RSHIFT(outlink->h, vsub);
420 s->height[0] = s->height[3] = outlink->h;
421 s->width[1] = s->width[2] = AV_CEIL_RSHIFT(outlink->w, hsub);
422 s->width[0] = s->width[3] = outlink->w;
423
424 if (!s->odepth && srcx->format != srcy->format) {
425 av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
426 return AVERROR(EINVAL);
427 }
428
429 if (srcx->w != srcy->w || srcx->h != srcy->h) {
430 av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
431 "(size %dx%d) do not match the corresponding "
432 "second input link %s parameters (size %dx%d)\n",
433 ctx->input_pads[0].name, srcx->w, srcx->h,
434 ctx->input_pads[1].name,
435 srcy->w, srcy->h);
436 return AVERROR(EINVAL);
437 }
438
439 if (s->nb_planesx != s->nb_planesy) {
440 av_log(ctx, AV_LOG_ERROR, "First input link %s number of planes "
441 "(%d) do not match the corresponding "
442 "second input link %s number of planes (%d)\n",
443 ctx->input_pads[0].name, s->nb_planesx,
444 ctx->input_pads[1].name, s->nb_planesy);
445 return AVERROR(EINVAL);
446 }
447
448 if (s->nb_planesx != s->nb_planes) {
449 av_log(ctx, AV_LOG_ERROR, "First input link %s number of planes "
450 "(%d) do not match the corresponding "
451 "output link %s number of planes (%d)\n",
452 ctx->input_pads[0].name, s->nb_planesx,
453 ctx->output_pads[0].name, s->nb_planes);
454 return AVERROR(EINVAL);
455 }
456
457 if (s->widthx[1] != s->widthy[1] || s->heightx[1] != s->heighty[1]) {
458 av_log(ctx, AV_LOG_ERROR, "First input link %s 2nd plane "
459 "(size %dx%d) do not match the corresponding "
460 "second input link %s 2nd plane (size %dx%d)\n",
461 ctx->input_pads[0].name, s->widthx[1], s->heightx[1],
462 ctx->input_pads[1].name,
463 s->widthy[1], s->heighty[1]);
464 return AVERROR(EINVAL);
465 }
466
467 if (s->widthx[2] != s->widthy[2] || s->heightx[2] != s->heighty[2]) {
468 av_log(ctx, AV_LOG_ERROR, "First input link %s 3rd plane "
469 "(size %dx%d) do not match the corresponding "
470 "second input link %s 3rd plane (size %dx%d)\n",
471 ctx->input_pads[0].name, s->widthx[2], s->heightx[2],
472 ctx->input_pads[1].name,
473 s->widthy[2], s->heighty[2]);
474 return AVERROR(EINVAL);
475 }
476
477 if (s->widthx[1] != s->width[1] || s->heightx[1] != s->height[1]) {
478 av_log(ctx, AV_LOG_ERROR, "First input link %s 2nd plane "
479 "(size %dx%d) do not match the corresponding "
480 "output link %s 2nd plane (size %dx%d)\n",
481 ctx->input_pads[0].name, s->widthx[1], s->heightx[1],
482 ctx->output_pads[0].name, s->width[1], s->height[1]);
483 return AVERROR(EINVAL);
484 }
485
486 if (s->widthx[2] != s->width[2] || s->heightx[2] != s->height[2]) {
487 av_log(ctx, AV_LOG_ERROR, "First input link %s 3rd plane "
488 "(size %dx%d) do not match the corresponding "
489 "output link %s 3rd plane (size %dx%d)\n",
490 ctx->input_pads[0].name, s->widthx[2], s->heightx[2],
491 ctx->output_pads[0].name, s->width[2], s->height[2]);
492 return AVERROR(EINVAL);
493 }
494
495 if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
496 return ret;
497
498 in = s->fs.in;
499 in[0].time_base = srcx->time_base;
500 in[1].time_base = srcy->time_base;
501 in[0].sync = 2;
502 in[0].before = EXT_STOP;
503 in[0].after = EXT_INFINITY;
504 in[1].sync = 1;
505 in[1].before = EXT_STOP;
506 in[1].after = EXT_INFINITY;
507 s->fs.opaque = s;
508 s->fs.on_event = process_frame;
509
510 if ((ret = config_output(outlink)) < 0)
511 return ret;
512
513 ret = ff_framesync_configure(&s->fs);
514 outlink->time_base = s->fs.time_base;
515
516 return ret;
517 }
518
activate(AVFilterContext * ctx)519 static int activate(AVFilterContext *ctx)
520 {
521 LUT2Context *s = ctx->priv;
522 return ff_framesync_activate(&s->fs);
523 }
524
525 static const AVFilterPad inputs[] = {
526 {
527 .name = "srcx",
528 .type = AVMEDIA_TYPE_VIDEO,
529 .config_props = config_inputx,
530 },
531 {
532 .name = "srcy",
533 .type = AVMEDIA_TYPE_VIDEO,
534 .config_props = config_inputy,
535 },
536 { NULL }
537 };
538
539 static const AVFilterPad outputs[] = {
540 {
541 .name = "default",
542 .type = AVMEDIA_TYPE_VIDEO,
543 .config_props = lut2_config_output,
544 },
545 { NULL }
546 };
547
process_command(AVFilterContext * ctx,const char * cmd,const char * args,char * res,int res_len,int flags)548 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
549 char *res, int res_len, int flags)
550 {
551 int ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
552
553 if (ret < 0)
554 return ret;
555
556 return config_output(ctx->outputs[0]);
557 }
558
559 #define lut2_options options
560
561 FRAMESYNC_DEFINE_CLASS(lut2, LUT2Context, fs);
562
563 AVFilter ff_vf_lut2 = {
564 .name = "lut2",
565 .description = NULL_IF_CONFIG_SMALL("Compute and apply a lookup table from two video inputs."),
566 .preinit = lut2_framesync_preinit,
567 .priv_size = sizeof(LUT2Context),
568 .priv_class = &lut2_class,
569 .uninit = uninit,
570 .query_formats = query_formats,
571 .activate = activate,
572 .inputs = inputs,
573 .outputs = outputs,
574 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
575 AVFILTER_FLAG_SLICE_THREADS,
576 .process_command = process_command,
577 };
578
579 #if CONFIG_TLUT2_FILTER
580
init(AVFilterContext * ctx)581 static av_cold int init(AVFilterContext *ctx)
582 {
583 LUT2Context *s = ctx->priv;
584
585 s->tlut2 = !strcmp(ctx->filter->name, "tlut2");
586
587 return 0;
588 }
589
tlut2_filter_frame(AVFilterLink * inlink,AVFrame * frame)590 static int tlut2_filter_frame(AVFilterLink *inlink, AVFrame *frame)
591 {
592 AVFilterContext *ctx = inlink->dst;
593 LUT2Context *s = ctx->priv;
594 AVFilterLink *outlink = ctx->outputs[0];
595
596 if (s->prev_frame) {
597 AVFrame *out;
598
599 if (ctx->is_disabled) {
600 out = av_frame_clone(frame);
601 } else {
602 ThreadData td;
603
604 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
605 if (!out) {
606 av_frame_free(&s->prev_frame);
607 s->prev_frame = frame;
608 return AVERROR(ENOMEM);
609 }
610
611 av_frame_copy_props(out, frame);
612
613 td.out = out;
614 td.srcx = frame;
615 td.srcy = s->prev_frame;
616 ctx->internal->execute(ctx, s->lut2, &td, NULL, FFMIN(s->heightx[1], ff_filter_get_nb_threads(ctx)));
617 }
618 av_frame_free(&s->prev_frame);
619 s->prev_frame = frame;
620 return ff_filter_frame(outlink, out);
621 }
622 s->prev_frame = frame;
623 return 0;
624 }
625
626 static const AVOption tlut2_options[] = {
627 { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
628 { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
629 { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
630 { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, { .str = "x" }, .flags = TFLAGS },
631 { NULL }
632 };
633
634 AVFILTER_DEFINE_CLASS(tlut2);
635
636 static const AVFilterPad tlut2_inputs[] = {
637 {
638 .name = "default",
639 .type = AVMEDIA_TYPE_VIDEO,
640 .filter_frame = tlut2_filter_frame,
641 .config_props = config_inputx,
642 },
643 { NULL }
644 };
645
646 static const AVFilterPad tlut2_outputs[] = {
647 {
648 .name = "default",
649 .type = AVMEDIA_TYPE_VIDEO,
650 .config_props = config_output,
651 },
652 { NULL }
653 };
654
655 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 .query_formats = query_formats,
661 .init = init,
662 .uninit = uninit,
663 .inputs = tlut2_inputs,
664 .outputs = tlut2_outputs,
665 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
666 AVFILTER_FLAG_SLICE_THREADS,
667 .process_command = process_command,
668 };
669
670 #endif
671