2 * Copyright (c) 2017 Paul B Mahol
4 * This file is part of FFmpeg.
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.
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.
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
21 #include "libavutil/attributes.h"
22 #include "libavutil/common.h"
23 #include "libavutil/eval.h"
24 #include "libavutil/imgutils.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/pixdesc.h"
32 static const char *const var_names[] = {
33 "w", ///< width of the input video
34 "h", ///< height of the input video
35 "val", ///< input value for the pixel
72 static const double presets[][3][8] =
75 {-7.5631093e-16, 7.4289183e-13, -2.8525484e-10, 5.4446085e-08, -5.5596238e-06, 3.0569325e-04, -2.3137421e-03, 1.2152095e-02 },
76 { 1.3217636e-15, -1.2214648e-12, 4.4319712e-10, -8.0197993e-08, 7.6598370e-06, -3.6523704e-04, 8.4836670e-03, -2.5536888e-02 },
77 {-1.1446568e-15, 1.0013446e-12, -3.5651575e-10, 6.6775016e-08, -6.7120346e-06, 2.7346619e-04, 4.7969657e-03, 1.1971441e-02 },
80 {-3.9848859e-18, 9.4821649e-14, -6.7371977e-11, 1.8469937e-08, -2.5359307e-06, 1.7959053e-04, 3.9782564e-04, 2.8845935e-04 },
81 { 6.8408539e-16, -6.5499979e-13, 2.4562526e-10, -4.5989298e-08, 4.5723324e-06, -2.2111913e-04, 5.2023164e-03, -1.1226064e-02 },
82 {-2.9921470e-15, 2.5864165e-12, -8.7403799e-10, 1.4713388e-07, -1.2701505e-05, 4.5159935e-04, 3.1087989e-03, 1.9122831e-02 },
85 { 3.6196089e-16, -3.3623041e-13, 1.2324010e-10, -2.2769060e-08, 2.2297792e-06, -1.2567829e-04, 9.9791629e-03, 5.7247918e-02 },
86 { 5.0262888e-16, -5.3193896e-13, 2.2451715e-10, -4.7529623e-08, 5.1374873e-06, -2.3260136e-04, 3.1502825e-03, 1.5362491e-02 },
87 {-1.7782261e-16, 2.2487839e-13, -1.0610236e-10, 2.4112644e-08, -2.6331623e-06, 8.9499751e-05, 2.1386328e-03, 5.3824268e-01 },
90 { 9.4850045e-16, -8.6629383e-13, 3.0310944e-10, -5.1340396e-08, 4.6024275e-06, -2.2744239e-04, 4.5559993e-03, 2.5662350e-01 },
91 { 9.6461041e-17, -6.9209477e-14, 1.7625397e-11, -2.0229773e-09, 1.4900110e-07, -1.9315187e-05, 5.8967339e-03, 3.9544827e-03 },
92 { 5.1785449e-16, -3.6663004e-13, 1.0249990e-10, -1.5431998e-08, 1.5007941e-06, -1.2001502e-04, 7.6951526e-03, 3.2292815e-01 },
95 {-4.3683890e-15, 3.7020347e-12, -1.1712592e-09, 1.6401790e-07, -8.6842919e-06, -1.8542465e-06, 8.4485325e-03, 1.6267077e-01 },
96 {-4.0011069e-16, 2.7861423e-13, -6.3388921e-11, 5.8872238e-09, -5.4466522e-07, 1.8037114e-05, 1.0599869e-02, 7.6914696e-02 },
97 {-2.8242609e-15, 2.9234108e-12, -1.1726546e-09, 2.2552115e-07, -2.0059387e-05, 5.0595552e-04, 1.7714932e-02, 2.7271836e-01 },
100 {-9.5484131e-16, 9.6988184e-13, -4.0058766e-10, 8.5743924e-08, -9.9644797e-06, 5.9197908e-04, -1.0361579e-02, 3.3164429e-02 },
101 { 1.2731941e-17, -9.4238449e-15, 2.2808841e-12, -1.1548296e-10, -2.3888913e-08, 3.8986680e-06, 2.5879330e-03, 1.2769733e-01 },
102 { 4.6004608e-16, -5.0686849e-13, 2.2753449e-10, -5.3074099e-08, 6.7196096e-06, -4.4120020e-04, 1.3435551e-02, 2.8293355e-01 },
106 typedef struct PseudoColorContext {
107 const AVClass *class;
114 int width[4], height[4];
115 double var_values[VAR_VARS_NB];
116 char *comp_expr_str[4];
117 AVExpr *comp_expr[4];
118 float lut[4][256*256];
120 void (*filter[4])(int max, int width, int height,
121 const uint8_t *index, const uint8_t *src,
127 } PseudoColorContext;
129 #define OFFSET(x) offsetof(PseudoColorContext, x)
130 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
132 static const AVOption pseudocolor_options[] = {
133 { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, {.str="val"}, .flags = FLAGS },
134 { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, {.str="val"}, .flags = FLAGS },
135 { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, {.str="val"}, .flags = FLAGS },
136 { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, {.str="val"}, .flags = FLAGS },
137 { "i", "set component as base", OFFSET(index), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, .flags = FLAGS },
138 { "p", "set preset", OFFSET(preset), AV_OPT_TYPE_INT, {.i64=-1},-1,NB_CMAPS-1, .flags = FLAGS, "preset" },
139 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=-1},.flags = FLAGS, "preset" },
140 { "magma", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MAGMA}, .flags = FLAGS, "preset" },
141 { "inferno", NULL, 0, AV_OPT_TYPE_CONST, {.i64=INFERNO}, .flags = FLAGS, "preset" },
142 { "plasma", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PLASMA}, .flags = FLAGS, "preset" },
143 { "viridis", NULL, 0, AV_OPT_TYPE_CONST, {.i64=VIRIDIS}, .flags = FLAGS, "preset" },
144 { "turbo", NULL, 0, AV_OPT_TYPE_CONST, {.i64=TURBO}, .flags = FLAGS, "preset" },
145 { "cividis", NULL, 0, AV_OPT_TYPE_CONST, {.i64=CIVIDIS}, .flags = FLAGS, "preset" },
149 static const enum AVPixelFormat pix_fmts[] = {
150 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
151 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
152 AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P,
153 AV_PIX_FMT_YUV444P, AV_PIX_FMT_GBRP,
154 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_GBRAP,
155 AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUVA422P9,
156 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUVA420P9,
157 AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUVA444P9,
158 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUVA420P10,
159 AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUVA422P10,
160 AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUVA444P10,
161 AV_PIX_FMT_YUV420P12,
162 AV_PIX_FMT_YUV422P12,
163 AV_PIX_FMT_YUV444P12,
164 AV_PIX_FMT_YUV420P14,
165 AV_PIX_FMT_YUV422P14,
166 AV_PIX_FMT_YUV444P14,
167 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUVA420P16,
168 AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUVA422P16,
169 AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUVA444P16,
171 AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
172 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12,
174 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
178 static int query_formats(AVFilterContext *ctx)
180 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
182 return AVERROR(ENOMEM);
183 return ff_set_common_formats(ctx, fmts_list);
186 static void pseudocolor_filter(int max, int width, int height,
187 const uint8_t *index,
197 for (y = 0; y < height; y++) {
198 for (x = 0; x < width; x++) {
199 int v = lut[index[x]];
201 if (v >= 0 && v <= max) {
213 static void pseudocolor_filter_11(int max, int width, int height,
214 const uint8_t *index,
224 for (y = 0; y < height; y++) {
225 for (x = 0; x < width; x++) {
226 int v = lut[index[(y << 1) * ilinesize + (x << 1)]];
228 if (v >= 0 && v <= max) {
239 static void pseudocolor_filter_11d(int max, int width, int height,
240 const uint8_t *index,
250 for (y = 0; y < height; y++) {
251 for (x = 0; x < width; x++) {
252 int v = lut[index[(y >> 1) * ilinesize + (x >> 1)]];
254 if (v >= 0 && v <= max) {
265 static void pseudocolor_filter_10(int max, int width, int height,
266 const uint8_t *index,
276 for (y = 0; y < height; y++) {
277 for (x = 0; x < width; x++) {
278 int v = lut[index[x << 1]];
280 if (v >= 0 && v <= max) {
292 static void pseudocolor_filter_10d(int max, int width, int height,
293 const uint8_t *index,
303 for (y = 0; y < height; y++) {
304 for (x = 0; x < width; x++) {
305 int v = lut[index[x >> 1]];
307 if (v >= 0 && v <= max) {
319 static void pseudocolor_filter_16(int max, int width, int height,
320 const uint8_t *iindex,
328 const uint16_t *index = (const uint16_t *)iindex;
329 const uint16_t *src = (const uint16_t *)ssrc;
330 uint16_t *dst = (uint16_t *)ddst;
333 for (y = 0; y < height; y++) {
334 for (x = 0; x < width; x++) {
335 int v = lut[index[x]];
337 if (v >= 0 && v <= max) {
343 index += ilinesize / 2;
344 src += slinesize / 2;
345 dst += dlinesize / 2;
349 static void pseudocolor_filter_16_10(int max, int width, int height,
350 const uint8_t *iindex,
358 const uint16_t *index = (const uint16_t *)iindex;
359 const uint16_t *src = (const uint16_t *)ssrc;
360 uint16_t *dst = (uint16_t *)ddst;
363 for (y = 0; y < height; y++) {
364 for (x = 0; x < width; x++) {
365 int v = lut[index[x << 1]];
367 if (v >= 0 && v <= max) {
373 index += ilinesize / 2;
374 src += slinesize / 2;
375 dst += dlinesize / 2;
379 static void pseudocolor_filter_16_10d(int max, int width, int height,
380 const uint8_t *iindex,
388 const uint16_t *index = (const uint16_t *)iindex;
389 const uint16_t *src = (const uint16_t *)ssrc;
390 uint16_t *dst = (uint16_t *)ddst;
393 for (y = 0; y < height; y++) {
394 for (x = 0; x < width; x++) {
395 int v = lut[index[x >> 1]];
397 if (v >= 0 && v <= max) {
403 index += ilinesize / 2;
404 src += slinesize / 2;
405 dst += dlinesize / 2;
409 static void pseudocolor_filter_16_11(int max, int width, int height,
410 const uint8_t *iindex,
418 const uint16_t *index = (const uint16_t *)iindex;
419 const uint16_t *src = (const uint16_t *)ssrc;
420 uint16_t *dst = (uint16_t *)ddst;
427 for (y = 0; y < height; y++) {
428 for (x = 0; x < width; x++) {
429 int v = lut[index[(y << 1) * ilinesize + (x << 1)]];
431 if (v >= 0 && v <= max) {
442 static void pseudocolor_filter_16_11d(int max, int width, int height,
443 const uint8_t *iindex,
451 const uint16_t *index = (const uint16_t *)iindex;
452 const uint16_t *src = (const uint16_t *)ssrc;
453 uint16_t *dst = (uint16_t *)ddst;
460 for (y = 0; y < height; y++) {
461 for (x = 0; x < width; x++) {
462 int v = lut[index[(y >> 1) * ilinesize + (x >> 1)]];
464 if (v >= 0 && v <= max) {
475 #define RGB_TO_Y_BT709(r, g, b) \
476 ((0.21260*219.0/255.0) * (r) + (0.71520*219.0/255.0) * (g) + \
477 (0.07220*219.0/255.0) * (b))
479 #define RGB_TO_U_BT709(r1, g1, b1, max) \
480 (-(0.11457*224.0/255.0) * r1 - (0.38543*224.0/255.0) * g1 + \
481 (0.50000*224.0/255.0) * b1 + max * 0.5)
483 #define RGB_TO_V_BT709(r1, g1, b1, max) \
484 ((0.50000*224.0/255.0) * r1 - (0.45415*224.0/255.0) * g1 - \
485 (0.04585*224.0/255.0) * b1 + max * 0.5)
487 static double poly_eval(const double *const poly, double x)
491 for (int i = 0; i < 8; i++) {
492 res += pow(x, i) * poly[7-i];
495 return av_clipd(res, 0., 1.);
498 static int config_input(AVFilterLink *inlink)
500 AVFilterContext *ctx = inlink->dst;
501 PseudoColorContext *s = ctx->priv;
502 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
503 int depth, ret, hsub, vsub, color, factor, rgb;
505 rgb = desc->flags & AV_PIX_FMT_FLAG_RGB;
506 depth = desc->comp[0].depth;
507 factor = 1 << (depth - 8);
508 s->max = (1 << depth) - 1;
509 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
511 if (s->index >= s->nb_planes) {
512 av_log(ctx, AV_LOG_ERROR, "index out of allowed range\n");
513 return AVERROR(EINVAL);
516 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
519 hsub = desc->log2_chroma_w;
520 vsub = desc->log2_chroma_h;
521 s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
522 s->height[0] = s->height[3] = inlink->h;
523 s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
524 s->width[0] = s->width[3] = inlink->w;
526 s->var_values[VAR_W] = inlink->w;
527 s->var_values[VAR_H] = inlink->h;
529 s->var_values[VAR_YMIN] = 16 * (1 << (depth - 8));
530 s->var_values[VAR_UMIN] = 16 * (1 << (depth - 8));
531 s->var_values[VAR_VMIN] = 16 * (1 << (depth - 8));
532 s->var_values[VAR_AMIN] = 0;
533 s->var_values[VAR_YMAX] = 235 * (1 << (depth - 8));
534 s->var_values[VAR_UMAX] = 240 * (1 << (depth - 8));
535 s->var_values[VAR_VMAX] = 240 * (1 << (depth - 8));
536 s->var_values[VAR_AMAX] = s->max;
538 for (color = 0; color < s->nb_planes && s->preset < 0; color++) {
542 /* create the parsed expression */
543 av_expr_free(s->comp_expr[color]);
544 s->comp_expr[color] = NULL;
545 ret = av_expr_parse(&s->comp_expr[color], s->comp_expr_str[color],
546 var_names, NULL, NULL, NULL, NULL, 0, ctx);
548 av_log(ctx, AV_LOG_ERROR,
549 "Error when parsing the expression '%s' for the component %d and color %d.\n",
550 s->comp_expr_str[color], color, color);
551 return AVERROR(EINVAL);
554 /* compute the lut */
555 for (val = 0; val < FF_ARRAY_ELEMS(s->lut[color]); val++) {
556 s->var_values[VAR_VAL] = val;
558 res = av_expr_eval(s->comp_expr[color], s->var_values, s);
560 av_log(ctx, AV_LOG_ERROR,
561 "Error when evaluating the expression '%s' for the value %d for the component %d.\n",
562 s->comp_expr_str[color], val, color);
563 return AVERROR(EINVAL);
565 s->lut[color][val] = res;
569 if (s->preset >= 0) {
570 for (int i = 0; i < 256; i++) {
571 for (int j = 0; j < factor; j++) {
572 const double lf = j / (double)factor;
575 g = poly_eval(presets[s->preset][1], i + lf) * s->max;
576 b = poly_eval(presets[s->preset][2], i + lf) * s->max;
577 r = poly_eval(presets[s->preset][0], i + lf) * s->max;
580 double y = RGB_TO_Y_BT709(r, g, b);
581 double u = RGB_TO_U_BT709(r, g, b, s->max);
582 double v = RGB_TO_V_BT709(r, g, b, s->max);
589 s->lut[0][i*factor+j] = g;
590 s->lut[1][i*factor+j] = b;
591 s->lut[2][i*factor+j] = r;
596 switch (inlink->format) {
597 case AV_PIX_FMT_YUV444P:
598 case AV_PIX_FMT_YUVA444P:
599 case AV_PIX_FMT_GBRP:
600 case AV_PIX_FMT_GBRAP:
601 case AV_PIX_FMT_GRAY8:
602 s->filter[0] = s->filter[1] = s->filter[2] = s->filter[3] = pseudocolor_filter;
604 case AV_PIX_FMT_YUV420P:
605 case AV_PIX_FMT_YUVA420P:
609 s->filter[0] = s->filter[3] = pseudocolor_filter;
610 s->filter[1] = s->filter[2] = pseudocolor_filter_11;
614 s->filter[0] = s->filter[3] = pseudocolor_filter_11d;
615 s->filter[1] = s->filter[2] = pseudocolor_filter;
619 case AV_PIX_FMT_YUV422P:
620 case AV_PIX_FMT_YUVA422P:
624 s->filter[0] = s->filter[3] = pseudocolor_filter;
625 s->filter[1] = s->filter[2] = pseudocolor_filter_10;
629 s->filter[0] = s->filter[3] = pseudocolor_filter_10d;
630 s->filter[1] = s->filter[2] = pseudocolor_filter;
634 case AV_PIX_FMT_YUV444P9:
635 case AV_PIX_FMT_YUVA444P9:
636 case AV_PIX_FMT_YUV444P10:
637 case AV_PIX_FMT_YUVA444P10:
638 case AV_PIX_FMT_YUV444P12:
639 case AV_PIX_FMT_YUV444P14:
640 case AV_PIX_FMT_YUV444P16:
641 case AV_PIX_FMT_YUVA444P16:
642 case AV_PIX_FMT_GBRP9:
643 case AV_PIX_FMT_GBRP10:
644 case AV_PIX_FMT_GBRP12:
645 case AV_PIX_FMT_GBRP14:
646 case AV_PIX_FMT_GBRP16:
647 case AV_PIX_FMT_GBRAP10:
648 case AV_PIX_FMT_GBRAP12:
649 case AV_PIX_FMT_GBRAP16:
650 case AV_PIX_FMT_GRAY9:
651 case AV_PIX_FMT_GRAY10:
652 case AV_PIX_FMT_GRAY12:
653 case AV_PIX_FMT_GRAY14:
654 case AV_PIX_FMT_GRAY16:
655 s->filter[0] = s->filter[1] = s->filter[2] = s->filter[3] = pseudocolor_filter_16;
657 case AV_PIX_FMT_YUV422P9:
658 case AV_PIX_FMT_YUVA422P9:
659 case AV_PIX_FMT_YUV422P10:
660 case AV_PIX_FMT_YUVA422P10:
661 case AV_PIX_FMT_YUV422P12:
662 case AV_PIX_FMT_YUV422P14:
663 case AV_PIX_FMT_YUV422P16:
664 case AV_PIX_FMT_YUVA422P16:
668 s->filter[0] = s->filter[3] = pseudocolor_filter_16;
669 s->filter[1] = s->filter[2] = pseudocolor_filter_16_10;
673 s->filter[0] = s->filter[3] = pseudocolor_filter_16_10d;
674 s->filter[1] = s->filter[2] = pseudocolor_filter_16;
678 case AV_PIX_FMT_YUV420P9:
679 case AV_PIX_FMT_YUVA420P9:
680 case AV_PIX_FMT_YUV420P10:
681 case AV_PIX_FMT_YUVA420P10:
682 case AV_PIX_FMT_YUV420P12:
683 case AV_PIX_FMT_YUV420P14:
684 case AV_PIX_FMT_YUV420P16:
685 case AV_PIX_FMT_YUVA420P16:
689 s->filter[0] = s->filter[3] = pseudocolor_filter_16;
690 s->filter[1] = s->filter[2] = pseudocolor_filter_16_11;
694 s->filter[0] = s->filter[3] = pseudocolor_filter_16_11d;
695 s->filter[1] = s->filter[2] = pseudocolor_filter_16;
704 typedef struct ThreadData {
708 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
710 PseudoColorContext *s = ctx->priv;
711 ThreadData *td = arg;
712 AVFrame *in = td->in;
713 AVFrame *out = td->out;
715 for (int plane = 0; plane < s->nb_planes; plane++) {
716 const int slice_start = (s->height[plane] * jobnr) / nb_jobs;
717 const int slice_end = (s->height[plane] * (jobnr+1)) / nb_jobs;
718 const int islice_start = (s->height[s->index] * jobnr) / nb_jobs;
719 ptrdiff_t ilinesize = in->linesize[s->index];
720 ptrdiff_t slinesize = in->linesize[plane];
721 ptrdiff_t dlinesize = out->linesize[plane];
722 const uint8_t *index = in->data[s->index] + islice_start * ilinesize;
723 const uint8_t *src = in->data[plane] + slice_start * slinesize;
724 uint8_t *dst = out->data[plane] + slice_start * dlinesize;
726 s->filter[plane](s->max, s->width[plane], slice_end - slice_start,
727 index, src, dst, ilinesize, slinesize,
728 dlinesize, s->lut[plane]);
734 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
736 AVFilterContext *ctx = inlink->dst;
737 PseudoColorContext *s = ctx->priv;
738 AVFilterLink *outlink = ctx->outputs[0];
742 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
745 return AVERROR(ENOMEM);
747 av_frame_copy_props(out, in);
749 td.out = out, td.in = in;
750 ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(s->height[1], ff_filter_get_nb_threads(ctx)));
753 return ff_filter_frame(outlink, out);
756 static const AVFilterPad inputs[] = {
759 .type = AVMEDIA_TYPE_VIDEO,
760 .filter_frame = filter_frame,
761 .config_props = config_input,
766 static const AVFilterPad outputs[] = {
769 .type = AVMEDIA_TYPE_VIDEO,
774 static av_cold void uninit(AVFilterContext *ctx)
776 PseudoColorContext *s = ctx->priv;
779 for (i = 0; i < 4; i++) {
780 av_expr_free(s->comp_expr[i]);
781 s->comp_expr[i] = NULL;
785 AVFILTER_DEFINE_CLASS(pseudocolor);
787 AVFilter ff_vf_pseudocolor = {
788 .name = "pseudocolor",
789 .description = NULL_IF_CONFIG_SMALL("Make pseudocolored video frames."),
790 .priv_size = sizeof(PseudoColorContext),
791 .priv_class = &pseudocolor_class,
793 .query_formats = query_formats,
796 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,