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
62 typedef struct PseudoColorContext {
69 int width[4], height[4];
70 double var_values[VAR_VARS_NB];
71 char *comp_expr_str[4];
73 float lut[4][256*256];
75 void (*filter[4])(int max, int width, int height,
76 const uint8_t *index, const uint8_t *src,
84 #define OFFSET(x) offsetof(PseudoColorContext, x)
85 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
87 static const AVOption pseudocolor_options[] = {
88 { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, {.str="val"}, .flags = FLAGS },
89 { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, {.str="val"}, .flags = FLAGS },
90 { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, {.str="val"}, .flags = FLAGS },
91 { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, {.str="val"}, .flags = FLAGS },
92 { "i", "set component as base", OFFSET(index), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, .flags = FLAGS },
96 static const enum AVPixelFormat pix_fmts[] = {
97 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY16,
98 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
99 AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P,
100 AV_PIX_FMT_YUV444P, AV_PIX_FMT_GBRP,
101 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_GBRAP,
102 AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUVA422P9,
103 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUVA420P9,
104 AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUVA444P9,
105 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUVA420P10,
106 AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUVA422P10,
107 AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUVA444P10,
108 AV_PIX_FMT_YUV420P12,
109 AV_PIX_FMT_YUV422P12,
110 AV_PIX_FMT_YUV444P12,
111 AV_PIX_FMT_YUV420P14,
112 AV_PIX_FMT_YUV422P14,
113 AV_PIX_FMT_YUV444P14,
114 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUVA420P16,
115 AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUVA422P16,
116 AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUVA444P16,
117 AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
118 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
122 static int query_formats(AVFilterContext *ctx)
124 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
126 return AVERROR(ENOMEM);
127 return ff_set_common_formats(ctx, fmts_list);
130 static void pseudocolor_filter(int max, int width, int height,
131 const uint8_t *index,
141 for (y = 0; y < height; y++) {
142 for (x = 0; x < width; x++) {
143 int v = lut[index[x]];
145 if (v >= 0 && v <= max) {
157 static void pseudocolor_filter_11(int max, int width, int height,
158 const uint8_t *index,
168 for (y = 0; y < height; y++) {
169 for (x = 0; x < width; x++) {
170 int v = lut[index[(y << 1) * ilinesize + (x << 1)]];
172 if (v >= 0 && v <= max) {
183 static void pseudocolor_filter_11d(int max, int width, int height,
184 const uint8_t *index,
194 for (y = 0; y < height; y++) {
195 for (x = 0; x < width; x++) {
196 int v = lut[index[(y >> 1) * ilinesize + (x >> 1)]];
198 if (v >= 0 && v <= max) {
209 static void pseudocolor_filter_10(int max, int width, int height,
210 const uint8_t *index,
220 for (y = 0; y < height; y++) {
221 for (x = 0; x < width; x++) {
222 int v = lut[index[x << 1]];
224 if (v >= 0 && v <= max) {
236 static void pseudocolor_filter_10d(int max, int width, int height,
237 const uint8_t *index,
247 for (y = 0; y < height; y++) {
248 for (x = 0; x < width; x++) {
249 int v = lut[index[x >> 1]];
251 if (v >= 0 && v <= max) {
263 static void pseudocolor_filter_16(int max, int width, int height,
264 const uint8_t *iindex,
272 const uint16_t *index = (const uint16_t *)iindex;
273 const uint16_t *src = (const uint16_t *)ssrc;
274 uint16_t *dst = (uint16_t *)ddst;
277 for (y = 0; y < height; y++) {
278 for (x = 0; x < width; x++) {
279 int v = lut[index[x]];
281 if (v >= 0 && v <= max) {
287 index += ilinesize / 2;
288 src += slinesize / 2;
289 dst += dlinesize / 2;
293 static void pseudocolor_filter_16_10(int max, int width, int height,
294 const uint8_t *iindex,
302 const uint16_t *index = (const uint16_t *)iindex;
303 const uint16_t *src = (const uint16_t *)ssrc;
304 uint16_t *dst = (uint16_t *)ddst;
307 for (y = 0; y < height; y++) {
308 for (x = 0; x < width; x++) {
309 int v = lut[index[x << 1]];
311 if (v >= 0 && v <= max) {
317 index += ilinesize / 2;
318 src += slinesize / 2;
319 dst += dlinesize / 2;
323 static void pseudocolor_filter_16_10d(int max, int width, int height,
324 const uint8_t *iindex,
332 const uint16_t *index = (const uint16_t *)iindex;
333 const uint16_t *src = (const uint16_t *)ssrc;
334 uint16_t *dst = (uint16_t *)ddst;
337 for (y = 0; y < height; y++) {
338 for (x = 0; x < width; x++) {
339 int v = lut[index[x >> 1]];
341 if (v >= 0 && v <= max) {
347 index += ilinesize / 2;
348 src += slinesize / 2;
349 dst += dlinesize / 2;
353 static void pseudocolor_filter_16_11(int max, int width, int height,
354 const uint8_t *iindex,
362 const uint16_t *index = (const uint16_t *)iindex;
363 const uint16_t *src = (const uint16_t *)ssrc;
364 uint16_t *dst = (uint16_t *)ddst;
371 for (y = 0; y < height; y++) {
372 for (x = 0; x < width; x++) {
373 int v = lut[index[(y << 1) * ilinesize + (x << 1)]];
375 if (v >= 0 && v <= max) {
386 static void pseudocolor_filter_16_11d(int max, int width, int height,
387 const uint8_t *iindex,
395 const uint16_t *index = (const uint16_t *)iindex;
396 const uint16_t *src = (const uint16_t *)ssrc;
397 uint16_t *dst = (uint16_t *)ddst;
404 for (y = 0; y < height; y++) {
405 for (x = 0; x < width; x++) {
406 int v = lut[index[(y >> 1) * ilinesize + (x >> 1)]];
408 if (v >= 0 && v <= max) {
419 static int config_input(AVFilterLink *inlink)
421 AVFilterContext *ctx = inlink->dst;
422 PseudoColorContext *s = ctx->priv;
423 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
424 int depth, ret, hsub, vsub, color;
426 depth = desc->comp[0].depth;
427 s->max = (1 << depth) - 1;
428 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
430 if (s->index >= s->nb_planes) {
431 av_log(ctx, AV_LOG_ERROR, "index out of allowed range\n");
432 return AVERROR(EINVAL);
435 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
438 hsub = desc->log2_chroma_w;
439 vsub = desc->log2_chroma_h;
440 s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
441 s->height[0] = s->height[3] = inlink->h;
442 s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
443 s->width[0] = s->width[3] = inlink->w;
445 s->var_values[VAR_W] = inlink->w;
446 s->var_values[VAR_H] = inlink->h;
448 s->var_values[VAR_YMIN] = 16 * (1 << (depth - 8));
449 s->var_values[VAR_UMIN] = 16 * (1 << (depth - 8));
450 s->var_values[VAR_VMIN] = 16 * (1 << (depth - 8));
451 s->var_values[VAR_AMIN] = 0;
452 s->var_values[VAR_YMAX] = 235 * (1 << (depth - 8));
453 s->var_values[VAR_UMAX] = 240 * (1 << (depth - 8));
454 s->var_values[VAR_VMAX] = 240 * (1 << (depth - 8));
455 s->var_values[VAR_AMAX] = s->max;
457 for (color = 0; color < s->nb_planes; color++) {
461 /* create the parsed expression */
462 av_expr_free(s->comp_expr[color]);
463 s->comp_expr[color] = NULL;
464 ret = av_expr_parse(&s->comp_expr[color], s->comp_expr_str[color],
465 var_names, NULL, NULL, NULL, NULL, 0, ctx);
467 av_log(ctx, AV_LOG_ERROR,
468 "Error when parsing the expression '%s' for the component %d and color %d.\n",
469 s->comp_expr_str[color], color, color);
470 return AVERROR(EINVAL);
473 /* compute the lut */
474 for (val = 0; val < FF_ARRAY_ELEMS(s->lut[color]); val++) {
475 s->var_values[VAR_VAL] = val;
477 res = av_expr_eval(s->comp_expr[color], s->var_values, s);
479 av_log(ctx, AV_LOG_ERROR,
480 "Error when evaluating the expression '%s' for the value %d for the component %d.\n",
481 s->comp_expr_str[color], val, color);
482 return AVERROR(EINVAL);
484 s->lut[color][val] = res;
488 switch (inlink->format) {
489 case AV_PIX_FMT_YUV444P:
490 case AV_PIX_FMT_YUVA444P:
491 case AV_PIX_FMT_GBRP:
492 case AV_PIX_FMT_GBRAP:
493 case AV_PIX_FMT_GRAY8:
494 s->filter[0] = s->filter[1] = s->filter[2] = s->filter[3] = pseudocolor_filter;
496 case AV_PIX_FMT_YUV420P:
497 case AV_PIX_FMT_YUVA420P:
501 s->filter[0] = s->filter[3] = pseudocolor_filter;
502 s->filter[1] = s->filter[2] = pseudocolor_filter_11;
506 s->filter[0] = s->filter[3] = pseudocolor_filter_11d;
507 s->filter[1] = s->filter[2] = pseudocolor_filter;
511 case AV_PIX_FMT_YUV422P:
512 case AV_PIX_FMT_YUVA422P:
516 s->filter[0] = s->filter[3] = pseudocolor_filter;
517 s->filter[1] = s->filter[2] = pseudocolor_filter_10;
521 s->filter[0] = s->filter[3] = pseudocolor_filter_10d;
522 s->filter[1] = s->filter[2] = pseudocolor_filter;
526 case AV_PIX_FMT_YUV444P9:
527 case AV_PIX_FMT_YUVA444P9:
528 case AV_PIX_FMT_YUV444P10:
529 case AV_PIX_FMT_YUVA444P10:
530 case AV_PIX_FMT_YUV444P12:
531 case AV_PIX_FMT_YUV444P14:
532 case AV_PIX_FMT_YUV444P16:
533 case AV_PIX_FMT_YUVA444P16:
534 case AV_PIX_FMT_GBRP10:
535 case AV_PIX_FMT_GBRAP10:
536 case AV_PIX_FMT_GBRP16:
537 case AV_PIX_FMT_GBRAP16:
538 case AV_PIX_FMT_GRAY10:
539 case AV_PIX_FMT_GRAY16:
540 s->filter[0] = s->filter[1] = s->filter[2] = s->filter[3] = pseudocolor_filter_16;
542 case AV_PIX_FMT_YUV422P9:
543 case AV_PIX_FMT_YUVA422P9:
544 case AV_PIX_FMT_YUV422P10:
545 case AV_PIX_FMT_YUVA422P10:
546 case AV_PIX_FMT_YUV422P12:
547 case AV_PIX_FMT_YUV422P14:
548 case AV_PIX_FMT_YUV422P16:
549 case AV_PIX_FMT_YUVA422P16:
553 s->filter[0] = s->filter[3] = pseudocolor_filter_16;
554 s->filter[1] = s->filter[2] = pseudocolor_filter_16_10;
558 s->filter[0] = s->filter[3] = pseudocolor_filter_16_10d;
559 s->filter[1] = s->filter[2] = pseudocolor_filter_16;
563 case AV_PIX_FMT_YUV420P9:
564 case AV_PIX_FMT_YUVA420P9:
565 case AV_PIX_FMT_YUV420P10:
566 case AV_PIX_FMT_YUVA420P10:
567 case AV_PIX_FMT_YUV420P12:
568 case AV_PIX_FMT_YUV420P14:
569 case AV_PIX_FMT_YUV420P16:
570 case AV_PIX_FMT_YUVA420P16:
574 s->filter[0] = s->filter[3] = pseudocolor_filter_16;
575 s->filter[1] = s->filter[2] = pseudocolor_filter_16_11;
579 s->filter[0] = s->filter[3] = pseudocolor_filter_16_11d;
580 s->filter[1] = s->filter[2] = pseudocolor_filter_16;
589 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
591 AVFilterContext *ctx = inlink->dst;
592 PseudoColorContext *s = ctx->priv;
593 AVFilterLink *outlink = ctx->outputs[0];
597 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
600 return AVERROR(ENOMEM);
602 av_frame_copy_props(out, in);
604 for (plane = 0; plane < s->nb_planes; plane++) {
605 const uint8_t *index = in->data[s->index];
606 const uint8_t *src = in->data[plane];
607 uint8_t *dst = out->data[plane];
608 ptrdiff_t ilinesize = in->linesize[s->index];
609 ptrdiff_t slinesize = in->linesize[plane];
610 ptrdiff_t dlinesize = out->linesize[plane];
612 s->filter[plane](s->max, s->width[plane], s->height[plane],
613 index, src, dst, ilinesize, slinesize,
614 dlinesize, s->lut[plane]);
618 return ff_filter_frame(outlink, out);
621 static const AVFilterPad inputs[] = {
624 .type = AVMEDIA_TYPE_VIDEO,
625 .filter_frame = filter_frame,
626 .config_props = config_input,
631 static const AVFilterPad outputs[] = {
634 .type = AVMEDIA_TYPE_VIDEO,
639 static av_cold void uninit(AVFilterContext *ctx)
641 PseudoColorContext *s = ctx->priv;
644 for (i = 0; i < 4; i++) {
645 av_expr_free(s->comp_expr[i]);
646 s->comp_expr[i] = NULL;
650 AVFILTER_DEFINE_CLASS(pseudocolor);
652 AVFilter ff_vf_pseudocolor = {
653 .name = "pseudocolor",
654 .description = NULL_IF_CONFIG_SMALL("Make pseudocolored video frames."),
655 .priv_size = sizeof(PseudoColorContext),
656 .priv_class = &pseudocolor_class,
658 .query_formats = query_formats,
661 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,