FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_lut.c
Date: 2025-11-03 03:39:10
Exec Total Coverage
Lines: 156 199 78.4%
Functions: 8 14 57.1%
Branches: 87 109 79.8%
Line Branch Exec Source
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 "config_components.h"
28
29 #include "libavutil/attributes.h"
30 #include "libavutil/bswap.h"
31 #include "libavutil/common.h"
32 #include "libavutil/eval.h"
33 #include "libavutil/mem.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/pixdesc.h"
36 #include "avfilter.h"
37 #include "drawutils.h"
38 #include "filters.h"
39 #include "formats.h"
40 #include "video.h"
41
42 static const char *const var_names[] = {
43 "w", ///< width of the input video
44 "h", ///< height of the input video
45 "val", ///< input value for the pixel
46 "maxval", ///< max value for the pixel
47 "minval", ///< min value for the pixel
48 "negval", ///< negated value
49 "clipval",
50 NULL
51 };
52
53 enum var_name {
54 VAR_W,
55 VAR_H,
56 VAR_VAL,
57 VAR_MAXVAL,
58 VAR_MINVAL,
59 VAR_NEGVAL,
60 VAR_CLIPVAL,
61 VAR_VARS_NB
62 };
63
64 typedef struct LutContext {
65 const AVClass *class;
66 uint16_t lut[4][256 * 256]; ///< lookup table for each component
67 char *comp_expr_str[4];
68 AVExpr *comp_expr[4];
69 int hsub, vsub;
70 double var_values[VAR_VARS_NB];
71 int is_rgb, is_yuv;
72 int is_planar;
73 int is_16bit;
74 int step;
75 } LutContext;
76
77 #define Y 0
78 #define U 1
79 #define V 2
80 #define R 0
81 #define G 1
82 #define B 2
83 #define A 3
84
85 #define OFFSET(x) offsetof(LutContext, x)
86 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
87
88 static const AVOption options[] = {
89 { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
90 { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
91 { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
92 { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
93 { "y", "set Y expression", OFFSET(comp_expr_str[Y]), AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
94 { "u", "set U expression", OFFSET(comp_expr_str[U]), AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
95 { "v", "set V expression", OFFSET(comp_expr_str[V]), AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
96 { "r", "set R expression", OFFSET(comp_expr_str[R]), AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
97 { "g", "set G expression", OFFSET(comp_expr_str[G]), AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
98 { "b", "set B expression", OFFSET(comp_expr_str[B]), AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
99 { "a", "set A expression", OFFSET(comp_expr_str[A]), AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
100 { NULL }
101 };
102
103 115 static av_cold void uninit(AVFilterContext *ctx)
104 {
105 115 LutContext *s = ctx->priv;
106 int i;
107
108
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 575 for (i = 0; i < 4; i++) {
109 460 av_expr_free(s->comp_expr[i]);
110 460 s->comp_expr[i] = NULL;
111 460 av_freep(&s->comp_expr_str[i]);
112 }
113 115 }
114
115 #define YUV_FORMATS \
116 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, \
117 AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P, \
118 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, \
119 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, \
120 AV_PIX_FMT_YUVJ440P, \
121 AV_PIX_FMT_YUV444P9LE, AV_PIX_FMT_YUV422P9LE, AV_PIX_FMT_YUV420P9LE, \
122 AV_PIX_FMT_YUV444P10LE, AV_PIX_FMT_YUV422P10LE, AV_PIX_FMT_YUV420P10LE, AV_PIX_FMT_YUV440P10LE, \
123 AV_PIX_FMT_YUV444P12LE, AV_PIX_FMT_YUV422P12LE, AV_PIX_FMT_YUV420P12LE, AV_PIX_FMT_YUV440P12LE, \
124 AV_PIX_FMT_YUV444P14LE, AV_PIX_FMT_YUV422P14LE, AV_PIX_FMT_YUV420P14LE, \
125 AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUV420P16LE, \
126 AV_PIX_FMT_YUVA444P16LE, AV_PIX_FMT_YUVA422P16LE, AV_PIX_FMT_YUVA420P16LE
127
128 #define RGB_FORMATS \
129 AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA, \
130 AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, \
131 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, \
132 AV_PIX_FMT_RGB48LE, AV_PIX_FMT_RGBA64LE, \
133 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, \
134 AV_PIX_FMT_GBRP9LE, AV_PIX_FMT_GBRP10LE, \
135 AV_PIX_FMT_GBRAP10LE, \
136 AV_PIX_FMT_GBRP12LE, AV_PIX_FMT_GBRP14LE, \
137 AV_PIX_FMT_GBRP16LE, AV_PIX_FMT_GBRAP12LE, \
138 AV_PIX_FMT_GBRAP16LE
139
140 #define GRAY_FORMATS \
141 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9LE, AV_PIX_FMT_GRAY10LE, \
142 AV_PIX_FMT_GRAY12LE, AV_PIX_FMT_GRAY14LE, AV_PIX_FMT_GRAY16LE
143
144 static const enum AVPixelFormat yuv_pix_fmts[] = { YUV_FORMATS, AV_PIX_FMT_NONE };
145 static const enum AVPixelFormat rgb_pix_fmts[] = { RGB_FORMATS, AV_PIX_FMT_NONE };
146 static const enum AVPixelFormat all_pix_fmts[] = { RGB_FORMATS, YUV_FORMATS, GRAY_FORMATS, AV_PIX_FMT_NONE };
147
148 58 static int query_formats(const AVFilterContext *ctx,
149 AVFilterFormatsConfig **cfg_in,
150 AVFilterFormatsConfig **cfg_out)
151 {
152 58 const LutContext *s = ctx->priv;
153
154
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 116 const enum AVPixelFormat *pix_fmts = s->is_rgb ? rgb_pix_fmts :
155
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 58 s->is_yuv ? yuv_pix_fmts :
156 all_pix_fmts;
157 58 return ff_set_common_formats_from_list2(ctx, cfg_in, cfg_out, pix_fmts);
158 }
159
160 /**
161 * Clip value val in the minval - maxval range.
162 */
163 ✗ static double clip(void *opaque, double val)
164 {
165 ✗ LutContext *s = opaque;
166 ✗ double minval = s->var_values[VAR_MINVAL];
167 ✗ double maxval = s->var_values[VAR_MAXVAL];
168
169 ✗ return av_clip(val, minval, maxval);
170 }
171
172 /**
173 * Compute gamma correction for value val, assuming the minval-maxval
174 * range, val is clipped to a value contained in the same interval.
175 */
176 ✗ static double compute_gammaval(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
183 ✗ return pow((val-minval)/(maxval-minval), gamma) * (maxval-minval)+minval;
184 }
185
186 /**
187 * Compute ITU Rec.709 gamma correction of value val.
188 */
189 ✗ static double compute_gammaval709(void *opaque, double gamma)
190 {
191 ✗ LutContext *s = opaque;
192 ✗ double val = s->var_values[VAR_CLIPVAL];
193 ✗ double minval = s->var_values[VAR_MINVAL];
194 ✗ double maxval = s->var_values[VAR_MAXVAL];
195 ✗ double level = (val - minval) / (maxval - minval);
196 ✗ level = level < 0.018 ? 4.5 * level
197 ✗ : 1.099 * pow(level, 1.0 / gamma) - 0.099;
198 ✗ return level * (maxval - minval) + minval;
199 }
200
201 static double (* const funcs1[])(void *, double) = {
202 clip,
203 compute_gammaval,
204 compute_gammaval709,
205 NULL
206 };
207
208 static const char * const funcs1_names[] = {
209 "clip",
210 "gammaval",
211 "gammaval709",
212 NULL
213 };
214
215 57 static int config_props(AVFilterLink *inlink)
216 {
217 57 AVFilterContext *ctx = inlink->dst;
218 57 LutContext *s = ctx->priv;
219 57 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
220 uint8_t rgba_map[4]; /* component index -> RGBA color index map */
221 int min[4], max[4];
222 int val, color, ret;
223
224 57 s->hsub = desc->log2_chroma_w;
225 57 s->vsub = desc->log2_chroma_h;
226
227 57 s->var_values[VAR_W] = inlink->w;
228 57 s->var_values[VAR_H] = inlink->h;
229 57 s->is_16bit = desc->comp[0].depth > 8;
230
231
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 57 switch (inlink->format) {
232 29 case AV_PIX_FMT_YUV410P:
233 case AV_PIX_FMT_YUV411P:
234 case AV_PIX_FMT_YUV420P:
235 case AV_PIX_FMT_YUV422P:
236 case AV_PIX_FMT_YUV440P:
237 case AV_PIX_FMT_YUV444P:
238 case AV_PIX_FMT_YUVA420P:
239 case AV_PIX_FMT_YUVA422P:
240 case AV_PIX_FMT_YUVA444P:
241 case AV_PIX_FMT_YUV420P9LE:
242 case AV_PIX_FMT_YUV422P9LE:
243 case AV_PIX_FMT_YUV444P9LE:
244 case AV_PIX_FMT_YUVA420P9LE:
245 case AV_PIX_FMT_YUVA422P9LE:
246 case AV_PIX_FMT_YUVA444P9LE:
247 case AV_PIX_FMT_YUV420P10LE:
248 case AV_PIX_FMT_YUV422P10LE:
249 case AV_PIX_FMT_YUV440P10LE:
250 case AV_PIX_FMT_YUV444P10LE:
251 case AV_PIX_FMT_YUVA420P10LE:
252 case AV_PIX_FMT_YUVA422P10LE:
253 case AV_PIX_FMT_YUVA444P10LE:
254 case AV_PIX_FMT_YUV420P12LE:
255 case AV_PIX_FMT_YUV422P12LE:
256 case AV_PIX_FMT_YUV440P12LE:
257 case AV_PIX_FMT_YUV444P12LE:
258 case AV_PIX_FMT_YUV420P14LE:
259 case AV_PIX_FMT_YUV422P14LE:
260 case AV_PIX_FMT_YUV444P14LE:
261 case AV_PIX_FMT_YUV420P16LE:
262 case AV_PIX_FMT_YUV422P16LE:
263 case AV_PIX_FMT_YUV444P16LE:
264 case AV_PIX_FMT_YUVA420P16LE:
265 case AV_PIX_FMT_YUVA422P16LE:
266 case AV_PIX_FMT_YUVA444P16LE:
267 29 min[Y] = 16 * (1 << (desc->comp[0].depth - 8));
268 29 min[U] = 16 * (1 << (desc->comp[1].depth - 8));
269 29 min[V] = 16 * (1 << (desc->comp[2].depth - 8));
270 29 min[A] = 0;
271 29 max[Y] = 235 * (1 << (desc->comp[0].depth - 8));
272 29 max[U] = 240 * (1 << (desc->comp[1].depth - 8));
273 29 max[V] = 240 * (1 << (desc->comp[2].depth - 8));
274 29 max[A] = (1 << desc->comp[0].depth) - 1;
275 29 break;
276 2 case AV_PIX_FMT_RGB48LE:
277 case AV_PIX_FMT_RGBA64LE:
278 2 min[0] = min[1] = min[2] = min[3] = 0;
279 2 max[0] = max[1] = max[2] = max[3] = 65535;
280 2 break;
281 26 default:
282 26 min[0] = min[1] = min[2] = min[3] = 0;
283 26 max[0] = max[1] = max[2] = max[3] = 255 * (1 << (desc->comp[0].depth - 8));
284 }
285
286 57 s->is_yuv = s->is_rgb = 0;
287 57 s->is_planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;
288
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 57 if (ff_fmt_is_in(inlink->format, yuv_pix_fmts)) s->is_yuv = 1;
289
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 24 else if (ff_fmt_is_in(inlink->format, rgb_pix_fmts)) s->is_rgb = 1;
290
291
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 57 if (s->is_rgb) {
292 18 ff_fill_rgba_map(rgba_map, inlink->format);
293 18 s->step = av_get_bits_per_pixel(desc) >> 3;
294
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 18 if (s->is_16bit) {
295 10 s->step = s->step >> 1;
296 }
297 }
298
299
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 231 for (color = 0; color < desc->nb_components; color++) {
300 double res;
301
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 174 int comp = s->is_rgb ? rgba_map[color] : color;
302
303 /* create the parsed expression */
304 174 av_expr_free(s->comp_expr[color]);
305 174 s->comp_expr[color] = NULL;
306 174 ret = av_expr_parse(&s->comp_expr[color], s->comp_expr_str[color],
307 var_names, funcs1_names, funcs1, NULL, NULL, 0, ctx);
308
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 174 if (ret < 0) {
309 ✗ av_log(ctx, AV_LOG_ERROR,
310 "Error when parsing the expression '%s' for the component %d and color %d.\n",
311 s->comp_expr_str[comp], comp, color);
312 ✗ return AVERROR(EINVAL);
313 }
314
315 /* compute the lut */
316 174 s->var_values[VAR_MAXVAL] = max[color];
317 174 s->var_values[VAR_MINVAL] = min[color];
318
319
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 11403438 for (val = 0; val < FF_ARRAY_ELEMS(s->lut[comp]); val++) {
320 11403264 s->var_values[VAR_VAL] = val;
321 11403264 s->var_values[VAR_CLIPVAL] = av_clip(val, min[color], max[color]);
322 11403264 s->var_values[VAR_NEGVAL] =
323 11403264 av_clip(min[color] + max[color] - s->var_values[VAR_VAL],
324 min[color], max[color]);
325
326 11403264 res = av_expr_eval(s->comp_expr[color], s->var_values, s);
327
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 11403264 if (isnan(res)) {
328 ✗ av_log(ctx, AV_LOG_ERROR,
329 "Error when evaluating the expression '%s' for the value %d for the component %d.\n",
330 s->comp_expr_str[color], val, comp);
331 ✗ return AVERROR(EINVAL);
332 }
333 11403264 s->lut[comp][val] = av_clip((int)res, 0, max[A]);
334 11403264 av_log(ctx, AV_LOG_DEBUG, "val[%d][%d] = %d\n", comp, val, s->lut[comp][val]);
335 }
336 }
337
338 57 return 0;
339 }
340
341 struct thread_data {
342 AVFrame *in;
343 AVFrame *out;
344
345 int w;
346 int h;
347 };
348
349 #define LOAD_PACKED_COMMON\
350 LutContext *s = ctx->priv;\
351 const struct thread_data *td = arg;\
352 \
353 int i, j;\
354 const int w = td->w;\
355 const int h = td->h;\
356 AVFrame *in = td->in;\
357 AVFrame *out = td->out;\
358 const uint16_t (*tab)[256*256] = (const uint16_t (*)[256*256])s->lut;\
359 const int step = s->step;\
360 \
361 const int slice_start = (h * jobnr ) / nb_jobs;\
362 const int slice_end = (h * (jobnr+1)) / nb_jobs;\
363
364 /* packed, 16-bit */
365 4 static int lut_packed_16bits(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
366 {
367 4 LOAD_PACKED_COMMON
368
369 uint16_t *inrow, *outrow, *inrow0, *outrow0;
370 4 const int in_linesize = in->linesize[0] / 2;
371 4 const int out_linesize = out->linesize[0] / 2;
372 4 inrow0 = (uint16_t *)in ->data[0];
373 4 outrow0 = (uint16_t *)out->data[0];
374
375
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 1156 for (i = slice_start; i < slice_end; i++) {
376 1152 inrow = inrow0 + i * in_linesize;
377 1152 outrow = outrow0 + i * out_linesize;
378
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 406656 for (j = 0; j < w; j++) {
379
380
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 405504 switch (step) {
381 #if HAVE_BIGENDIAN
382 case 4: outrow[3] = av_bswap16(tab[3][av_bswap16(inrow[3])]); // Fall-through
383 case 3: outrow[2] = av_bswap16(tab[2][av_bswap16(inrow[2])]); // Fall-through
384 case 2: outrow[1] = av_bswap16(tab[1][av_bswap16(inrow[1])]); // Fall-through
385 default: outrow[0] = av_bswap16(tab[0][av_bswap16(inrow[0])]);
386 #else
387 202752 case 4: outrow[3] = tab[3][inrow[3]]; // Fall-through
388 405504 case 3: outrow[2] = tab[2][inrow[2]]; // Fall-through
389 405504 case 2: outrow[1] = tab[1][inrow[1]]; // Fall-through
390 405504 default: outrow[0] = tab[0][inrow[0]];
391 #endif
392 }
393 405504 outrow += step;
394 405504 inrow += step;
395 }
396 }
397
398 4 return 0;
399 }
400
401 /* packed, 8-bit */
402 12 static int lut_packed_8bits(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
403 {
404 12 LOAD_PACKED_COMMON
405
406 uint8_t *inrow, *outrow, *inrow0, *outrow0;
407 12 const int in_linesize = in->linesize[0];
408 12 const int out_linesize = out->linesize[0];
409 12 inrow0 = in ->data[0];
410 12 outrow0 = out->data[0];
411
412
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 3468 for (i = slice_start; i < slice_end; i++) {
413 3456 inrow = inrow0 + i * in_linesize;
414 3456 outrow = outrow0 + i * out_linesize;
415
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 1219968 for (j = 0; j < w; j++) {
416
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 1216512 switch (step) {
417 811008 case 4: outrow[3] = tab[3][inrow[3]]; // Fall-through
418 1216512 case 3: outrow[2] = tab[2][inrow[2]]; // Fall-through
419 1216512 case 2: outrow[1] = tab[1][inrow[1]]; // Fall-through
420 1216512 default: outrow[0] = tab[0][inrow[0]];
421 }
422 1216512 outrow += step;
423 1216512 inrow += step;
424 }
425 }
426
427 12 return 0;
428 }
429
430 #define LOAD_PLANAR_COMMON\
431 LutContext *s = ctx->priv;\
432 const struct thread_data *td = arg;\
433 int i, j, plane;\
434 AVFrame *in = td->in;\
435 AVFrame *out = td->out;\
436
437 #define PLANAR_COMMON\
438 int vsub = plane == 1 || plane == 2 ? s->vsub : 0;\
439 int hsub = plane == 1 || plane == 2 ? s->hsub : 0;\
440 int h = AV_CEIL_RSHIFT(td->h, vsub);\
441 int w = AV_CEIL_RSHIFT(td->w, hsub);\
442 const uint16_t *tab = s->lut[plane];\
443 \
444 const int slice_start = (h * jobnr ) / nb_jobs;\
445 const int slice_end = (h * (jobnr+1)) / nb_jobs;\
446
447 /* planar >8 bit depth */
448 66 static int lut_planar_16bits(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
449 {
450 66 LOAD_PLANAR_COMMON
451
452 uint16_t *inrow, *outrow;
453
454
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 256 for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
455
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 190 PLANAR_COMMON
456
457 190 const int in_linesize = in->linesize[plane] / 2;
458 190 const int out_linesize = out->linesize[plane] / 2;
459
460 190 inrow = (uint16_t *)in ->data[plane] + slice_start * in_linesize;
461 190 outrow = (uint16_t *)out->data[plane] + slice_start * out_linesize;
462
463
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464
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 15864768 for (j = 0; j < w; j++) {
465 #if HAVE_BIGENDIAN
466 outrow[j] = av_bswap16(tab[av_bswap16(inrow[j])]);
467 #else
468 15814656 outrow[j] = tab[inrow[j]];
469 #endif
470 }
471 50112 inrow += in_linesize;
472 50112 outrow += out_linesize;
473 }
474 }
475
476 66 return 0;
477 }
478
479 /* planar 8bit depth */
480 32 static int lut_planar_8bits(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
481 {
482 32 LOAD_PLANAR_COMMON
483
484 uint8_t *inrow, *outrow;
485
486
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 132 for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
487
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 100 PLANAR_COMMON
488
489 100 const int in_linesize = in->linesize[plane];
490 100 const int out_linesize = out->linesize[plane];
491
492 100 inrow = in ->data[plane] + slice_start * in_linesize;
493 100 outrow = out->data[plane] + slice_start * out_linesize;
494
495
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 25156 for (i = slice_start; i < slice_end; i++) {
496
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 7552224 for (j = 0; j < w; j++)
497 7527168 outrow[j] = tab[inrow[j]];
498 25056 inrow += in_linesize;
499 25056 outrow += out_linesize;
500 }
501 }
502
503 32 return 0;
504 }
505
506 #define PACKED_THREAD_DATA\
507 struct thread_data td = {\
508 .in = in,\
509 .out = out,\
510 .w = inlink->w,\
511 .h = in->height,\
512 };\
513
514 #define PLANAR_THREAD_DATA\
515 struct thread_data td = {\
516 .in = in,\
517 .out = out,\
518 .w = inlink->w,\
519 .h = inlink->h,\
520 };\
521
522 114 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
523 {
524 114 AVFilterContext *ctx = inlink->dst;
525 114 LutContext *s = ctx->priv;
526 114 AVFilterLink *outlink = ctx->outputs[0];
527 AVFrame *out;
528 114 int direct = 0;
529
530
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 114 if (av_frame_is_writable(in)) {
531 114 direct = 1;
532 114 out = in;
533 } else {
534 ✗ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
535 ✗ if (!out) {
536 ✗ av_frame_free(&in);
537 ✗ return AVERROR(ENOMEM);
538 }
539 ✗ av_frame_copy_props(out, in);
540 }
541
542 114 av_frame_side_data_remove_by_props(&out->side_data, &out->nb_side_data,
543 AV_SIDE_DATA_PROP_COLOR_DEPENDENT);
544
545
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 118 if (s->is_rgb && s->is_16bit && !s->is_planar) {
546 /* packed, 16-bit */
547 4 PACKED_THREAD_DATA
548 4 ff_filter_execute(ctx, lut_packed_16bits, &td, NULL,
549
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 4 FFMIN(in->height, ff_filter_get_nb_threads(ctx)));
550
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 122 } else if (s->is_rgb && !s->is_planar) {
551 /* packed 8 bits */
552 12 PACKED_THREAD_DATA
553 12 ff_filter_execute(ctx, lut_packed_8bits, &td, NULL,
554
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 12 FFMIN(in->height, ff_filter_get_nb_threads(ctx)));
555
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 98 } else if (s->is_16bit) {
556 /* planar >8 bit depth */
557 66 PLANAR_THREAD_DATA
558 66 ff_filter_execute(ctx, lut_planar_16bits, &td, NULL,
559
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 66 FFMIN(in->height, ff_filter_get_nb_threads(ctx)));
560 } else {
561 /* planar 8bit depth */
562 32 PLANAR_THREAD_DATA
563 32 ff_filter_execute(ctx, lut_planar_8bits, &td, NULL,
564
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 32 FFMIN(in->height, ff_filter_get_nb_threads(ctx)));
565 }
566
567
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 114 if (!direct)
568 ✗ av_frame_free(&in);
569
570 114 return ff_filter_frame(outlink, out);
571 }
572
573 ✗ static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
574 char *res, int res_len, int flags)
575 {
576 ✗ int ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
577
578 ✗ if (ret < 0)
579 ✗ return ret;
580
581 ✗ return config_props(ctx->inputs[0]);
582 }
583
584 static const AVFilterPad inputs[] = {
585 { .name = "default",
586 .type = AVMEDIA_TYPE_VIDEO,
587 .filter_frame = filter_frame,
588 .config_props = config_props,
589 },
590 };
591
592 #define DEFINE_LUT_FILTER(name_, description_, priv_class_) \
593 const FFFilter ff_vf_##name_ = { \
594 .p.name = #name_, \
595 .p.description = NULL_IF_CONFIG_SMALL(description_), \
596 .p.priv_class = &priv_class_ ## _class, \
597 .p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | \
598 AVFILTER_FLAG_SLICE_THREADS, \
599 .priv_size = sizeof(LutContext), \
600 .init = name_##_init, \
601 .uninit = uninit, \
602 FILTER_INPUTS(inputs), \
603 FILTER_OUTPUTS(ff_video_default_filterpad), \
604 FILTER_QUERY_FUNC2(query_formats), \
605 .process_command = process_command, \
606 }
607
608 AVFILTER_DEFINE_CLASS_EXT(lut, "lut/lutyuv/lutrgb", options);
609
610 #if CONFIG_LUT_FILTER
611
612 #define lut_init NULL
613 DEFINE_LUT_FILTER(lut, "Compute and apply a lookup table to the RGB/YUV input video.",
614 lut);
615 #undef lut_init
616 #endif
617
618 #if CONFIG_LUTYUV_FILTER
619
620 ✗ static av_cold int lutyuv_init(AVFilterContext *ctx)
621 {
622 ✗ LutContext *s = ctx->priv;
623
624 ✗ s->is_yuv = 1;
625
626 ✗ return 0;
627 }
628
629 DEFINE_LUT_FILTER(lutyuv, "Compute and apply a lookup table to the YUV input video.",
630 lut);
631 #endif
632
633 #if CONFIG_LUTRGB_FILTER
634
635 ✗ static av_cold int lutrgb_init(AVFilterContext *ctx)
636 {
637 ✗ LutContext *s = ctx->priv;
638
639 ✗ s->is_rgb = 1;
640
641 ✗ return 0;
642 }
643
644 DEFINE_LUT_FILTER(lutrgb, "Compute and apply a lookup table to the RGB input video.",
645 lut);
646 #endif
647