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1 | /* |
2 | * Copyright (c) 2013 Clément Bœsch | |
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 | * 3D Lookup table filter | |
24 | */ | |
25 | ||
26 | #include "libavutil/opt.h" | |
27 | #include "libavutil/file.h" | |
28 | #include "libavutil/intreadwrite.h" | |
29 | #include "libavutil/avassert.h" | |
30 | #include "libavutil/pixdesc.h" | |
31 | #include "libavutil/avstring.h" | |
32 | #include "avfilter.h" | |
33 | #include "drawutils.h" | |
34 | #include "dualinput.h" | |
35 | #include "formats.h" | |
36 | #include "internal.h" | |
37 | #include "video.h" | |
38 | ||
39 | #define R 0 | |
40 | #define G 1 | |
41 | #define B 2 | |
42 | #define A 3 | |
43 | ||
44 | enum interp_mode { | |
45 | INTERPOLATE_NEAREST, | |
46 | INTERPOLATE_TRILINEAR, | |
47 | INTERPOLATE_TETRAHEDRAL, | |
48 | NB_INTERP_MODE | |
49 | }; | |
50 | ||
51 | struct rgbvec { | |
52 | float r, g, b; | |
53 | }; | |
54 | ||
55 | /* 3D LUT don't often go up to level 32, but it is common to have a Hald CLUT | |
56 | * of 512x512 (64x64x64) */ | |
57 | #define MAX_LEVEL 64 | |
58 | ||
59 | typedef struct LUT3DContext { | |
60 | const AVClass *class; | |
61 | enum interp_mode interpolation; | |
62 | char *file; | |
63 | uint8_t rgba_map[4]; | |
64 | int step; | |
65 | avfilter_action_func *interp; | |
66 | struct rgbvec lut[MAX_LEVEL][MAX_LEVEL][MAX_LEVEL]; | |
67 | int lutsize; | |
68 | #if CONFIG_HALDCLUT_FILTER | |
69 | uint8_t clut_rgba_map[4]; | |
70 | int clut_step; | |
71 | int clut_is16bit; | |
72 | int clut_width; | |
73 | FFDualInputContext dinput; | |
74 | #endif | |
75 | } LUT3DContext; | |
76 | ||
77 | typedef struct ThreadData { | |
78 | AVFrame *in, *out; | |
79 | } ThreadData; | |
80 | ||
81 | #define OFFSET(x) offsetof(LUT3DContext, x) | |
82 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM | |
83 | #define COMMON_OPTIONS \ | |
84 | { "interp", "select interpolation mode", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERPOLATE_TETRAHEDRAL}, 0, NB_INTERP_MODE-1, FLAGS, "interp_mode" }, \ | |
85 | { "nearest", "use values from the nearest defined points", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_NEAREST}, INT_MIN, INT_MAX, FLAGS, "interp_mode" }, \ | |
86 | { "trilinear", "interpolate values using the 8 points defining a cube", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_TRILINEAR}, INT_MIN, INT_MAX, FLAGS, "interp_mode" }, \ | |
87 | { "tetrahedral", "interpolate values using a tetrahedron", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_TETRAHEDRAL}, INT_MIN, INT_MAX, FLAGS, "interp_mode" }, \ | |
88 | { NULL } | |
89 | ||
90 | static inline float lerpf(float v0, float v1, float f) | |
91 | { | |
92 | return v0 + (v1 - v0) * f; | |
93 | } | |
94 | ||
95 | static inline struct rgbvec lerp(const struct rgbvec *v0, const struct rgbvec *v1, float f) | |
96 | { | |
97 | struct rgbvec v = { | |
98 | lerpf(v0->r, v1->r, f), lerpf(v0->g, v1->g, f), lerpf(v0->b, v1->b, f) | |
99 | }; | |
100 | return v; | |
101 | } | |
102 | ||
103 | #define NEAR(x) ((int)((x) + .5)) | |
104 | #define PREV(x) ((int)(x)) | |
105 | #define NEXT(x) (FFMIN((int)(x) + 1, lut3d->lutsize - 1)) | |
106 | ||
107 | /** | |
108 | * Get the nearest defined point | |
109 | */ | |
110 | static inline struct rgbvec interp_nearest(const LUT3DContext *lut3d, | |
111 | const struct rgbvec *s) | |
112 | { | |
113 | return lut3d->lut[NEAR(s->r)][NEAR(s->g)][NEAR(s->b)]; | |
114 | } | |
115 | ||
116 | /** | |
117 | * Interpolate using the 8 vertices of a cube | |
118 | * @see https://en.wikipedia.org/wiki/Trilinear_interpolation | |
119 | */ | |
120 | static inline struct rgbvec interp_trilinear(const LUT3DContext *lut3d, | |
121 | const struct rgbvec *s) | |
122 | { | |
123 | const int prev[] = {PREV(s->r), PREV(s->g), PREV(s->b)}; | |
124 | const int next[] = {NEXT(s->r), NEXT(s->g), NEXT(s->b)}; | |
125 | const struct rgbvec d = {s->r - prev[0], s->g - prev[1], s->b - prev[2]}; | |
126 | const struct rgbvec c000 = lut3d->lut[prev[0]][prev[1]][prev[2]]; | |
127 | const struct rgbvec c001 = lut3d->lut[prev[0]][prev[1]][next[2]]; | |
128 | const struct rgbvec c010 = lut3d->lut[prev[0]][next[1]][prev[2]]; | |
129 | const struct rgbvec c011 = lut3d->lut[prev[0]][next[1]][next[2]]; | |
130 | const struct rgbvec c100 = lut3d->lut[next[0]][prev[1]][prev[2]]; | |
131 | const struct rgbvec c101 = lut3d->lut[next[0]][prev[1]][next[2]]; | |
132 | const struct rgbvec c110 = lut3d->lut[next[0]][next[1]][prev[2]]; | |
133 | const struct rgbvec c111 = lut3d->lut[next[0]][next[1]][next[2]]; | |
134 | const struct rgbvec c00 = lerp(&c000, &c100, d.r); | |
135 | const struct rgbvec c10 = lerp(&c010, &c110, d.r); | |
136 | const struct rgbvec c01 = lerp(&c001, &c101, d.r); | |
137 | const struct rgbvec c11 = lerp(&c011, &c111, d.r); | |
138 | const struct rgbvec c0 = lerp(&c00, &c10, d.g); | |
139 | const struct rgbvec c1 = lerp(&c01, &c11, d.g); | |
140 | const struct rgbvec c = lerp(&c0, &c1, d.b); | |
141 | return c; | |
142 | } | |
143 | ||
144 | /** | |
145 | * Tetrahedral interpolation. Based on code found in Truelight Software Library paper. | |
146 | * @see http://www.filmlight.ltd.uk/pdf/whitepapers/FL-TL-TN-0057-SoftwareLib.pdf | |
147 | */ | |
148 | static inline struct rgbvec interp_tetrahedral(const LUT3DContext *lut3d, | |
149 | const struct rgbvec *s) | |
150 | { | |
151 | const int prev[] = {PREV(s->r), PREV(s->g), PREV(s->b)}; | |
152 | const int next[] = {NEXT(s->r), NEXT(s->g), NEXT(s->b)}; | |
153 | const struct rgbvec d = {s->r - prev[0], s->g - prev[1], s->b - prev[2]}; | |
154 | const struct rgbvec c000 = lut3d->lut[prev[0]][prev[1]][prev[2]]; | |
155 | const struct rgbvec c111 = lut3d->lut[next[0]][next[1]][next[2]]; | |
156 | struct rgbvec c; | |
157 | if (d.r > d.g) { | |
158 | if (d.g > d.b) { | |
159 | const struct rgbvec c100 = lut3d->lut[next[0]][prev[1]][prev[2]]; | |
160 | const struct rgbvec c110 = lut3d->lut[next[0]][next[1]][prev[2]]; | |
161 | c.r = (1-d.r) * c000.r + (d.r-d.g) * c100.r + (d.g-d.b) * c110.r + (d.b) * c111.r; | |
162 | c.g = (1-d.r) * c000.g + (d.r-d.g) * c100.g + (d.g-d.b) * c110.g + (d.b) * c111.g; | |
163 | c.b = (1-d.r) * c000.b + (d.r-d.g) * c100.b + (d.g-d.b) * c110.b + (d.b) * c111.b; | |
164 | } else if (d.r > d.b) { | |
165 | const struct rgbvec c100 = lut3d->lut[next[0]][prev[1]][prev[2]]; | |
166 | const struct rgbvec c101 = lut3d->lut[next[0]][prev[1]][next[2]]; | |
167 | c.r = (1-d.r) * c000.r + (d.r-d.b) * c100.r + (d.b-d.g) * c101.r + (d.g) * c111.r; | |
168 | c.g = (1-d.r) * c000.g + (d.r-d.b) * c100.g + (d.b-d.g) * c101.g + (d.g) * c111.g; | |
169 | c.b = (1-d.r) * c000.b + (d.r-d.b) * c100.b + (d.b-d.g) * c101.b + (d.g) * c111.b; | |
170 | } else { | |
171 | const struct rgbvec c001 = lut3d->lut[prev[0]][prev[1]][next[2]]; | |
172 | const struct rgbvec c101 = lut3d->lut[next[0]][prev[1]][next[2]]; | |
173 | c.r = (1-d.b) * c000.r + (d.b-d.r) * c001.r + (d.r-d.g) * c101.r + (d.g) * c111.r; | |
174 | c.g = (1-d.b) * c000.g + (d.b-d.r) * c001.g + (d.r-d.g) * c101.g + (d.g) * c111.g; | |
175 | c.b = (1-d.b) * c000.b + (d.b-d.r) * c001.b + (d.r-d.g) * c101.b + (d.g) * c111.b; | |
176 | } | |
177 | } else { | |
178 | if (d.b > d.g) { | |
179 | const struct rgbvec c001 = lut3d->lut[prev[0]][prev[1]][next[2]]; | |
180 | const struct rgbvec c011 = lut3d->lut[prev[0]][next[1]][next[2]]; | |
181 | c.r = (1-d.b) * c000.r + (d.b-d.g) * c001.r + (d.g-d.r) * c011.r + (d.r) * c111.r; | |
182 | c.g = (1-d.b) * c000.g + (d.b-d.g) * c001.g + (d.g-d.r) * c011.g + (d.r) * c111.g; | |
183 | c.b = (1-d.b) * c000.b + (d.b-d.g) * c001.b + (d.g-d.r) * c011.b + (d.r) * c111.b; | |
184 | } else if (d.b > d.r) { | |
185 | const struct rgbvec c010 = lut3d->lut[prev[0]][next[1]][prev[2]]; | |
186 | const struct rgbvec c011 = lut3d->lut[prev[0]][next[1]][next[2]]; | |
187 | c.r = (1-d.g) * c000.r + (d.g-d.b) * c010.r + (d.b-d.r) * c011.r + (d.r) * c111.r; | |
188 | c.g = (1-d.g) * c000.g + (d.g-d.b) * c010.g + (d.b-d.r) * c011.g + (d.r) * c111.g; | |
189 | c.b = (1-d.g) * c000.b + (d.g-d.b) * c010.b + (d.b-d.r) * c011.b + (d.r) * c111.b; | |
190 | } else { | |
191 | const struct rgbvec c010 = lut3d->lut[prev[0]][next[1]][prev[2]]; | |
192 | const struct rgbvec c110 = lut3d->lut[next[0]][next[1]][prev[2]]; | |
193 | c.r = (1-d.g) * c000.r + (d.g-d.r) * c010.r + (d.r-d.b) * c110.r + (d.b) * c111.r; | |
194 | c.g = (1-d.g) * c000.g + (d.g-d.r) * c010.g + (d.r-d.b) * c110.g + (d.b) * c111.g; | |
195 | c.b = (1-d.g) * c000.b + (d.g-d.r) * c010.b + (d.r-d.b) * c110.b + (d.b) * c111.b; | |
196 | } | |
197 | } | |
198 | return c; | |
199 | } | |
200 | ||
201 | #define DEFINE_INTERP_FUNC(name, nbits) \ | |
202 | static int interp_##nbits##_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \ | |
203 | { \ | |
204 | int x, y; \ | |
205 | const LUT3DContext *lut3d = ctx->priv; \ | |
206 | const ThreadData *td = arg; \ | |
207 | const AVFrame *in = td->in; \ | |
208 | const AVFrame *out = td->out; \ | |
209 | const int direct = out == in; \ | |
210 | const int step = lut3d->step; \ | |
211 | const uint8_t r = lut3d->rgba_map[R]; \ | |
212 | const uint8_t g = lut3d->rgba_map[G]; \ | |
213 | const uint8_t b = lut3d->rgba_map[B]; \ | |
214 | const uint8_t a = lut3d->rgba_map[A]; \ | |
215 | const int slice_start = (in->height * jobnr ) / nb_jobs; \ | |
216 | const int slice_end = (in->height * (jobnr+1)) / nb_jobs; \ | |
217 | uint8_t *dstrow = out->data[0] + slice_start * out->linesize[0]; \ | |
218 | const uint8_t *srcrow = in ->data[0] + slice_start * in ->linesize[0]; \ | |
219 | const float scale = (1. / ((1<<nbits) - 1)) * (lut3d->lutsize - 1); \ | |
220 | \ | |
221 | for (y = slice_start; y < slice_end; y++) { \ | |
222 | uint##nbits##_t *dst = (uint##nbits##_t *)dstrow; \ | |
223 | const uint##nbits##_t *src = (const uint##nbits##_t *)srcrow; \ | |
224 | for (x = 0; x < in->width * step; x += step) { \ | |
225 | const struct rgbvec scaled_rgb = {src[x + r] * scale, \ | |
226 | src[x + g] * scale, \ | |
227 | src[x + b] * scale}; \ | |
228 | struct rgbvec vec = interp_##name(lut3d, &scaled_rgb); \ | |
229 | dst[x + r] = av_clip_uint##nbits(vec.r * (float)((1<<nbits) - 1)); \ | |
230 | dst[x + g] = av_clip_uint##nbits(vec.g * (float)((1<<nbits) - 1)); \ | |
231 | dst[x + b] = av_clip_uint##nbits(vec.b * (float)((1<<nbits) - 1)); \ | |
232 | if (!direct && step == 4) \ | |
233 | dst[x + a] = src[x + a]; \ | |
234 | } \ | |
235 | dstrow += out->linesize[0]; \ | |
236 | srcrow += in ->linesize[0]; \ | |
237 | } \ | |
238 | return 0; \ | |
239 | } | |
240 | ||
241 | DEFINE_INTERP_FUNC(nearest, 8) | |
242 | DEFINE_INTERP_FUNC(trilinear, 8) | |
243 | DEFINE_INTERP_FUNC(tetrahedral, 8) | |
244 | ||
245 | DEFINE_INTERP_FUNC(nearest, 16) | |
246 | DEFINE_INTERP_FUNC(trilinear, 16) | |
247 | DEFINE_INTERP_FUNC(tetrahedral, 16) | |
248 | ||
249 | #define MAX_LINE_SIZE 512 | |
250 | ||
251 | static int skip_line(const char *p) | |
252 | { | |
253 | while (*p && av_isspace(*p)) | |
254 | p++; | |
255 | return !*p || *p == '#'; | |
256 | } | |
257 | ||
258 | #define NEXT_LINE(loop_cond) do { \ | |
259 | if (!fgets(line, sizeof(line), f)) { \ | |
260 | av_log(ctx, AV_LOG_ERROR, "Unexpected EOF\n"); \ | |
261 | return AVERROR_INVALIDDATA; \ | |
262 | } \ | |
263 | } while (loop_cond) | |
264 | ||
265 | /* Basically r g and b float values on each line, with a facultative 3DLUTSIZE | |
266 | * directive; seems to be generated by Davinci */ | |
267 | static int parse_dat(AVFilterContext *ctx, FILE *f) | |
268 | { | |
269 | LUT3DContext *lut3d = ctx->priv; | |
270 | char line[MAX_LINE_SIZE]; | |
271 | int i, j, k, size; | |
272 | ||
273 | lut3d->lutsize = size = 33; | |
274 | ||
275 | NEXT_LINE(skip_line(line)); | |
276 | if (!strncmp(line, "3DLUTSIZE ", 10)) { | |
277 | size = strtol(line + 10, NULL, 0); | |
278 | if (size < 2 || size > MAX_LEVEL) { | |
279 | av_log(ctx, AV_LOG_ERROR, "Too large or invalid 3D LUT size\n"); | |
280 | return AVERROR(EINVAL); | |
281 | } | |
282 | lut3d->lutsize = size; | |
283 | NEXT_LINE(skip_line(line)); | |
284 | } | |
285 | for (k = 0; k < size; k++) { | |
286 | for (j = 0; j < size; j++) { | |
287 | for (i = 0; i < size; i++) { | |
288 | struct rgbvec *vec = &lut3d->lut[k][j][i]; | |
289 | if (k != 0 || j != 0 || i != 0) | |
290 | NEXT_LINE(skip_line(line)); | |
291 | if (sscanf(line, "%f %f %f", &vec->r, &vec->g, &vec->b) != 3) | |
292 | return AVERROR_INVALIDDATA; | |
293 | } | |
294 | } | |
295 | } | |
296 | return 0; | |
297 | } | |
298 | ||
299 | /* Iridas format */ | |
300 | static int parse_cube(AVFilterContext *ctx, FILE *f) | |
301 | { | |
302 | LUT3DContext *lut3d = ctx->priv; | |
303 | char line[MAX_LINE_SIZE]; | |
304 | float min[3] = {0.0, 0.0, 0.0}; | |
305 | float max[3] = {1.0, 1.0, 1.0}; | |
306 | ||
307 | while (fgets(line, sizeof(line), f)) { | |
308 | if (!strncmp(line, "LUT_3D_SIZE ", 12)) { | |
309 | int i, j, k; | |
310 | const int size = strtol(line + 12, NULL, 0); | |
311 | ||
312 | if (size < 2 || size > MAX_LEVEL) { | |
313 | av_log(ctx, AV_LOG_ERROR, "Too large or invalid 3D LUT size\n"); | |
314 | return AVERROR(EINVAL); | |
315 | } | |
316 | lut3d->lutsize = size; | |
317 | for (k = 0; k < size; k++) { | |
318 | for (j = 0; j < size; j++) { | |
319 | for (i = 0; i < size; i++) { | |
320 | struct rgbvec *vec = &lut3d->lut[i][j][k]; | |
321 | ||
322 | do { | |
323 | NEXT_LINE(0); | |
324 | if (!strncmp(line, "DOMAIN_", 7)) { | |
325 | float *vals = NULL; | |
326 | if (!strncmp(line + 7, "MIN ", 4)) vals = min; | |
327 | else if (!strncmp(line + 7, "MAX ", 4)) vals = max; | |
328 | if (!vals) | |
329 | return AVERROR_INVALIDDATA; | |
330 | sscanf(line + 11, "%f %f %f", vals, vals + 1, vals + 2); | |
331 | av_log(ctx, AV_LOG_DEBUG, "min: %f %f %f | max: %f %f %f\n", | |
332 | min[0], min[1], min[2], max[0], max[1], max[2]); | |
333 | continue; | |
334 | } | |
335 | } while (skip_line(line)); | |
336 | if (sscanf(line, "%f %f %f", &vec->r, &vec->g, &vec->b) != 3) | |
337 | return AVERROR_INVALIDDATA; | |
338 | vec->r *= max[0] - min[0]; | |
339 | vec->g *= max[1] - min[1]; | |
340 | vec->b *= max[2] - min[2]; | |
341 | } | |
342 | } | |
343 | } | |
344 | break; | |
345 | } | |
346 | } | |
347 | return 0; | |
348 | } | |
349 | ||
350 | /* Assume 17x17x17 LUT with a 16-bit depth | |
351 | * FIXME: it seems there are various 3dl formats */ | |
352 | static int parse_3dl(AVFilterContext *ctx, FILE *f) | |
353 | { | |
354 | char line[MAX_LINE_SIZE]; | |
355 | LUT3DContext *lut3d = ctx->priv; | |
356 | int i, j, k; | |
357 | const int size = 17; | |
358 | const float scale = 16*16*16; | |
359 | ||
360 | lut3d->lutsize = size; | |
361 | NEXT_LINE(skip_line(line)); | |
362 | for (k = 0; k < size; k++) { | |
363 | for (j = 0; j < size; j++) { | |
364 | for (i = 0; i < size; i++) { | |
365 | int r, g, b; | |
366 | struct rgbvec *vec = &lut3d->lut[k][j][i]; | |
367 | ||
368 | NEXT_LINE(skip_line(line)); | |
369 | if (sscanf(line, "%d %d %d", &r, &g, &b) != 3) | |
370 | return AVERROR_INVALIDDATA; | |
371 | vec->r = r / scale; | |
372 | vec->g = g / scale; | |
373 | vec->b = b / scale; | |
374 | } | |
375 | } | |
376 | } | |
377 | return 0; | |
378 | } | |
379 | ||
380 | /* Pandora format */ | |
381 | static int parse_m3d(AVFilterContext *ctx, FILE *f) | |
382 | { | |
383 | LUT3DContext *lut3d = ctx->priv; | |
384 | float scale; | |
385 | int i, j, k, size, in = -1, out = -1; | |
386 | char line[MAX_LINE_SIZE]; | |
387 | uint8_t rgb_map[3] = {0, 1, 2}; | |
388 | ||
389 | while (fgets(line, sizeof(line), f)) { | |
390 | if (!strncmp(line, "in", 2)) in = strtol(line + 2, NULL, 0); | |
391 | else if (!strncmp(line, "out", 3)) out = strtol(line + 3, NULL, 0); | |
392 | else if (!strncmp(line, "values", 6)) { | |
393 | const char *p = line + 6; | |
394 | #define SET_COLOR(id) do { \ | |
395 | while (av_isspace(*p)) \ | |
396 | p++; \ | |
397 | switch (*p) { \ | |
398 | case 'r': rgb_map[id] = 0; break; \ | |
399 | case 'g': rgb_map[id] = 1; break; \ | |
400 | case 'b': rgb_map[id] = 2; break; \ | |
401 | } \ | |
402 | while (*p && !av_isspace(*p)) \ | |
403 | p++; \ | |
404 | } while (0) | |
405 | SET_COLOR(0); | |
406 | SET_COLOR(1); | |
407 | SET_COLOR(2); | |
408 | break; | |
409 | } | |
410 | } | |
411 | ||
412 | if (in == -1 || out == -1) { | |
413 | av_log(ctx, AV_LOG_ERROR, "in and out must be defined\n"); | |
414 | return AVERROR_INVALIDDATA; | |
415 | } | |
416 | if (in < 2 || out < 2 || | |
417 | in > MAX_LEVEL*MAX_LEVEL*MAX_LEVEL || | |
418 | out > MAX_LEVEL*MAX_LEVEL*MAX_LEVEL) { | |
419 | av_log(ctx, AV_LOG_ERROR, "invalid in (%d) or out (%d)\n", in, out); | |
420 | return AVERROR_INVALIDDATA; | |
421 | } | |
422 | for (size = 1; size*size*size < in; size++); | |
423 | lut3d->lutsize = size; | |
424 | scale = 1. / (out - 1); | |
425 | ||
426 | for (k = 0; k < size; k++) { | |
427 | for (j = 0; j < size; j++) { | |
428 | for (i = 0; i < size; i++) { | |
429 | struct rgbvec *vec = &lut3d->lut[k][j][i]; | |
430 | float val[3]; | |
431 | ||
432 | NEXT_LINE(0); | |
433 | if (sscanf(line, "%f %f %f", val, val + 1, val + 2) != 3) | |
434 | return AVERROR_INVALIDDATA; | |
435 | vec->r = val[rgb_map[0]] * scale; | |
436 | vec->g = val[rgb_map[1]] * scale; | |
437 | vec->b = val[rgb_map[2]] * scale; | |
438 | } | |
439 | } | |
440 | } | |
441 | return 0; | |
442 | } | |
443 | ||
444 | static void set_identity_matrix(LUT3DContext *lut3d, int size) | |
445 | { | |
446 | int i, j, k; | |
447 | const float c = 1. / (size - 1); | |
448 | ||
449 | lut3d->lutsize = size; | |
450 | for (k = 0; k < size; k++) { | |
451 | for (j = 0; j < size; j++) { | |
452 | for (i = 0; i < size; i++) { | |
453 | struct rgbvec *vec = &lut3d->lut[k][j][i]; | |
454 | vec->r = k * c; | |
455 | vec->g = j * c; | |
456 | vec->b = i * c; | |
457 | } | |
458 | } | |
459 | } | |
460 | } | |
461 | ||
462 | static int query_formats(AVFilterContext *ctx) | |
463 | { | |
464 | static const enum AVPixelFormat pix_fmts[] = { | |
465 | AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, | |
466 | AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA, | |
467 | AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, | |
468 | AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR, | |
469 | AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0, | |
470 | AV_PIX_FMT_RGB48, AV_PIX_FMT_BGR48, | |
471 | AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64, | |
472 | AV_PIX_FMT_NONE | |
473 | }; | |
474 | ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); | |
475 | return 0; | |
476 | } | |
477 | ||
478 | static int config_input(AVFilterLink *inlink) | |
479 | { | |
480 | int is16bit = 0; | |
481 | LUT3DContext *lut3d = inlink->dst->priv; | |
482 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); | |
483 | ||
484 | switch (inlink->format) { | |
485 | case AV_PIX_FMT_RGB48: | |
486 | case AV_PIX_FMT_BGR48: | |
487 | case AV_PIX_FMT_RGBA64: | |
488 | case AV_PIX_FMT_BGRA64: | |
489 | is16bit = 1; | |
490 | } | |
491 | ||
492 | ff_fill_rgba_map(lut3d->rgba_map, inlink->format); | |
493 | lut3d->step = av_get_padded_bits_per_pixel(desc) >> (3 + is16bit); | |
494 | ||
495 | #define SET_FUNC(name) do { \ | |
496 | if (is16bit) lut3d->interp = interp_16_##name; \ | |
497 | else lut3d->interp = interp_8_##name; \ | |
498 | } while (0) | |
499 | ||
500 | switch (lut3d->interpolation) { | |
501 | case INTERPOLATE_NEAREST: SET_FUNC(nearest); break; | |
502 | case INTERPOLATE_TRILINEAR: SET_FUNC(trilinear); break; | |
503 | case INTERPOLATE_TETRAHEDRAL: SET_FUNC(tetrahedral); break; | |
504 | default: | |
505 | av_assert0(0); | |
506 | } | |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
511 | static AVFrame *apply_lut(AVFilterLink *inlink, AVFrame *in) | |
512 | { | |
513 | AVFilterContext *ctx = inlink->dst; | |
514 | LUT3DContext *lut3d = ctx->priv; | |
515 | AVFilterLink *outlink = inlink->dst->outputs[0]; | |
516 | AVFrame *out; | |
517 | ThreadData td; | |
518 | ||
519 | if (av_frame_is_writable(in)) { | |
520 | out = in; | |
521 | } else { | |
522 | out = ff_get_video_buffer(outlink, outlink->w, outlink->h); | |
523 | if (!out) { | |
524 | av_frame_free(&in); | |
525 | return NULL; | |
526 | } | |
527 | av_frame_copy_props(out, in); | |
528 | } | |
529 | ||
530 | td.in = in; | |
531 | td.out = out; | |
532 | ctx->internal->execute(ctx, lut3d->interp, &td, NULL, FFMIN(outlink->h, ctx->graph->nb_threads)); | |
533 | ||
534 | if (out != in) | |
535 | av_frame_free(&in); | |
536 | ||
537 | return out; | |
538 | } | |
539 | ||
540 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) | |
541 | { | |
542 | AVFilterLink *outlink = inlink->dst->outputs[0]; | |
543 | AVFrame *out = apply_lut(inlink, in); | |
544 | if (!out) | |
545 | return AVERROR(ENOMEM); | |
546 | return ff_filter_frame(outlink, out); | |
547 | } | |
548 | ||
549 | #if CONFIG_LUT3D_FILTER | |
550 | static const AVOption lut3d_options[] = { | |
551 | { "file", "set 3D LUT file name", OFFSET(file), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS }, | |
552 | COMMON_OPTIONS | |
553 | }; | |
554 | ||
555 | AVFILTER_DEFINE_CLASS(lut3d); | |
556 | ||
557 | static av_cold int lut3d_init(AVFilterContext *ctx) | |
558 | { | |
559 | int ret; | |
560 | FILE *f; | |
561 | const char *ext; | |
562 | LUT3DContext *lut3d = ctx->priv; | |
563 | ||
564 | if (!lut3d->file) { | |
565 | set_identity_matrix(lut3d, 32); | |
566 | return 0; | |
567 | } | |
568 | ||
569 | f = fopen(lut3d->file, "r"); | |
570 | if (!f) { | |
571 | ret = AVERROR(errno); | |
572 | av_log(ctx, AV_LOG_ERROR, "%s: %s\n", lut3d->file, av_err2str(ret)); | |
573 | return ret; | |
574 | } | |
575 | ||
576 | ext = strrchr(lut3d->file, '.'); | |
577 | if (!ext) { | |
578 | av_log(ctx, AV_LOG_ERROR, "Unable to guess the format from the extension\n"); | |
579 | ret = AVERROR_INVALIDDATA; | |
580 | goto end; | |
581 | } | |
582 | ext++; | |
583 | ||
584 | if (!av_strcasecmp(ext, "dat")) { | |
585 | ret = parse_dat(ctx, f); | |
586 | } else if (!av_strcasecmp(ext, "3dl")) { | |
587 | ret = parse_3dl(ctx, f); | |
588 | } else if (!av_strcasecmp(ext, "cube")) { | |
589 | ret = parse_cube(ctx, f); | |
590 | } else if (!av_strcasecmp(ext, "m3d")) { | |
591 | ret = parse_m3d(ctx, f); | |
592 | } else { | |
593 | av_log(ctx, AV_LOG_ERROR, "Unrecognized '.%s' file type\n", ext); | |
594 | ret = AVERROR(EINVAL); | |
595 | } | |
596 | ||
597 | if (!ret && !lut3d->lutsize) { | |
598 | av_log(ctx, AV_LOG_ERROR, "3D LUT is empty\n"); | |
599 | ret = AVERROR_INVALIDDATA; | |
600 | } | |
601 | ||
602 | end: | |
603 | fclose(f); | |
604 | return ret; | |
605 | } | |
606 | ||
607 | static const AVFilterPad lut3d_inputs[] = { | |
608 | { | |
609 | .name = "default", | |
610 | .type = AVMEDIA_TYPE_VIDEO, | |
611 | .filter_frame = filter_frame, | |
612 | .config_props = config_input, | |
613 | }, | |
614 | { NULL } | |
615 | }; | |
616 | ||
617 | static const AVFilterPad lut3d_outputs[] = { | |
618 | { | |
619 | .name = "default", | |
620 | .type = AVMEDIA_TYPE_VIDEO, | |
621 | }, | |
622 | { NULL } | |
623 | }; | |
624 | ||
625 | AVFilter ff_vf_lut3d = { | |
626 | .name = "lut3d", | |
627 | .description = NULL_IF_CONFIG_SMALL("Adjust colors using a 3D LUT."), | |
628 | .priv_size = sizeof(LUT3DContext), | |
629 | .init = lut3d_init, | |
630 | .query_formats = query_formats, | |
631 | .inputs = lut3d_inputs, | |
632 | .outputs = lut3d_outputs, | |
633 | .priv_class = &lut3d_class, | |
634 | .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS, | |
635 | }; | |
636 | #endif | |
637 | ||
638 | #if CONFIG_HALDCLUT_FILTER | |
639 | ||
640 | static void update_clut(LUT3DContext *lut3d, const AVFrame *frame) | |
641 | { | |
642 | const uint8_t *data = frame->data[0]; | |
643 | const int linesize = frame->linesize[0]; | |
644 | const int w = lut3d->clut_width; | |
645 | const int step = lut3d->clut_step; | |
646 | const uint8_t *rgba_map = lut3d->clut_rgba_map; | |
647 | const int level = lut3d->lutsize; | |
648 | ||
649 | #define LOAD_CLUT(nbits) do { \ | |
650 | int i, j, k, x = 0, y = 0; \ | |
651 | \ | |
652 | for (k = 0; k < level; k++) { \ | |
653 | for (j = 0; j < level; j++) { \ | |
654 | for (i = 0; i < level; i++) { \ | |
655 | const uint##nbits##_t *src = (const uint##nbits##_t *) \ | |
656 | (data + y*linesize + x*step); \ | |
657 | struct rgbvec *vec = &lut3d->lut[i][j][k]; \ | |
658 | vec->r = src[rgba_map[0]] / (float)((1<<(nbits)) - 1); \ | |
659 | vec->g = src[rgba_map[1]] / (float)((1<<(nbits)) - 1); \ | |
660 | vec->b = src[rgba_map[2]] / (float)((1<<(nbits)) - 1); \ | |
661 | if (++x == w) { \ | |
662 | x = 0; \ | |
663 | y++; \ | |
664 | } \ | |
665 | } \ | |
666 | } \ | |
667 | } \ | |
668 | } while (0) | |
669 | ||
670 | if (!lut3d->clut_is16bit) LOAD_CLUT(8); | |
671 | else LOAD_CLUT(16); | |
672 | } | |
673 | ||
674 | ||
675 | static int config_output(AVFilterLink *outlink) | |
676 | { | |
677 | AVFilterContext *ctx = outlink->src; | |
678 | LUT3DContext *lut3d = ctx->priv; | |
679 | int ret; | |
680 | ||
681 | outlink->w = ctx->inputs[0]->w; | |
682 | outlink->h = ctx->inputs[0]->h; | |
683 | outlink->time_base = ctx->inputs[0]->time_base; | |
684 | if ((ret = ff_dualinput_init(ctx, &lut3d->dinput)) < 0) | |
685 | return ret; | |
686 | return 0; | |
687 | } | |
688 | ||
689 | static int filter_frame_hald(AVFilterLink *inlink, AVFrame *inpicref) | |
690 | { | |
691 | LUT3DContext *s = inlink->dst->priv; | |
692 | return ff_dualinput_filter_frame(&s->dinput, inlink, inpicref); | |
693 | } | |
694 | ||
695 | static int request_frame(AVFilterLink *outlink) | |
696 | { | |
697 | LUT3DContext *s = outlink->src->priv; | |
698 | return ff_dualinput_request_frame(&s->dinput, outlink); | |
699 | } | |
700 | ||
701 | static int config_clut(AVFilterLink *inlink) | |
702 | { | |
703 | int size, level, w, h; | |
704 | AVFilterContext *ctx = inlink->dst; | |
705 | LUT3DContext *lut3d = ctx->priv; | |
706 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); | |
707 | ||
708 | lut3d->clut_is16bit = 0; | |
709 | switch (inlink->format) { | |
710 | case AV_PIX_FMT_RGB48: | |
711 | case AV_PIX_FMT_BGR48: | |
712 | case AV_PIX_FMT_RGBA64: | |
713 | case AV_PIX_FMT_BGRA64: | |
714 | lut3d->clut_is16bit = 1; | |
715 | } | |
716 | ||
717 | lut3d->clut_step = av_get_padded_bits_per_pixel(desc) >> 3; | |
718 | ff_fill_rgba_map(lut3d->clut_rgba_map, inlink->format); | |
719 | ||
720 | if (inlink->w > inlink->h) | |
721 | av_log(ctx, AV_LOG_INFO, "Padding on the right (%dpx) of the " | |
722 | "Hald CLUT will be ignored\n", inlink->w - inlink->h); | |
723 | else if (inlink->w < inlink->h) | |
724 | av_log(ctx, AV_LOG_INFO, "Padding at the bottom (%dpx) of the " | |
725 | "Hald CLUT will be ignored\n", inlink->h - inlink->w); | |
726 | lut3d->clut_width = w = h = FFMIN(inlink->w, inlink->h); | |
727 | ||
728 | for (level = 1; level*level*level < w; level++); | |
729 | size = level*level*level; | |
730 | if (size != w) { | |
731 | av_log(ctx, AV_LOG_WARNING, "The Hald CLUT width does not match the level\n"); | |
732 | return AVERROR_INVALIDDATA; | |
733 | } | |
734 | av_assert0(w == h && w == size); | |
735 | level *= level; | |
736 | if (level > MAX_LEVEL) { | |
737 | const int max_clut_level = sqrt(MAX_LEVEL); | |
738 | const int max_clut_size = max_clut_level*max_clut_level*max_clut_level; | |
739 | av_log(ctx, AV_LOG_ERROR, "Too large Hald CLUT " | |
740 | "(maximum level is %d, or %dx%d CLUT)\n", | |
741 | max_clut_level, max_clut_size, max_clut_size); | |
742 | return AVERROR(EINVAL); | |
743 | } | |
744 | lut3d->lutsize = level; | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
749 | static AVFrame *update_apply_clut(AVFilterContext *ctx, AVFrame *main, | |
750 | const AVFrame *second) | |
751 | { | |
752 | AVFilterLink *inlink = ctx->inputs[0]; | |
753 | update_clut(ctx->priv, second); | |
754 | return apply_lut(inlink, main); | |
755 | } | |
756 | ||
757 | static av_cold int haldclut_init(AVFilterContext *ctx) | |
758 | { | |
759 | LUT3DContext *lut3d = ctx->priv; | |
760 | lut3d->dinput.process = update_apply_clut; | |
761 | return 0; | |
762 | } | |
763 | ||
764 | static av_cold void haldclut_uninit(AVFilterContext *ctx) | |
765 | { | |
766 | LUT3DContext *lut3d = ctx->priv; | |
767 | ff_dualinput_uninit(&lut3d->dinput); | |
768 | } | |
769 | ||
770 | static const AVOption haldclut_options[] = { | |
771 | { "shortest", "force termination when the shortest input terminates", OFFSET(dinput.shortest), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS }, | |
772 | { "repeatlast", "continue applying the last clut after eos", OFFSET(dinput.repeatlast), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS }, | |
773 | COMMON_OPTIONS | |
774 | }; | |
775 | ||
776 | AVFILTER_DEFINE_CLASS(haldclut); | |
777 | ||
778 | static const AVFilterPad haldclut_inputs[] = { | |
779 | { | |
780 | .name = "main", | |
781 | .type = AVMEDIA_TYPE_VIDEO, | |
782 | .filter_frame = filter_frame_hald, | |
783 | .config_props = config_input, | |
784 | },{ | |
785 | .name = "clut", | |
786 | .type = AVMEDIA_TYPE_VIDEO, | |
787 | .filter_frame = filter_frame_hald, | |
788 | .config_props = config_clut, | |
789 | }, | |
790 | { NULL } | |
791 | }; | |
792 | ||
793 | static const AVFilterPad haldclut_outputs[] = { | |
794 | { | |
795 | .name = "default", | |
796 | .type = AVMEDIA_TYPE_VIDEO, | |
797 | .request_frame = request_frame, | |
798 | .config_props = config_output, | |
799 | }, | |
800 | { NULL } | |
801 | }; | |
802 | ||
803 | AVFilter ff_vf_haldclut = { | |
804 | .name = "haldclut", | |
805 | .description = NULL_IF_CONFIG_SMALL("Adjust colors using a Hald CLUT."), | |
806 | .priv_size = sizeof(LUT3DContext), | |
807 | .init = haldclut_init, | |
808 | .uninit = haldclut_uninit, | |
809 | .query_formats = query_formats, | |
810 | .inputs = haldclut_inputs, | |
811 | .outputs = haldclut_outputs, | |
812 | .priv_class = &haldclut_class, | |
813 | .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS, | |
814 | }; | |
815 | #endif |