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_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, 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,
118 AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
119 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12,
121 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
125 static int query_formats(AVFilterContext *ctx)
127 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
129 return AVERROR(ENOMEM);
130 return ff_set_common_formats(ctx, fmts_list);
133 static void pseudocolor_filter(int max, int width, int height,
134 const uint8_t *index,
144 for (y = 0; y < height; y++) {
145 for (x = 0; x < width; x++) {
146 int v = lut[index[x]];
148 if (v >= 0 && v <= max) {
160 static void pseudocolor_filter_11(int max, int width, int height,
161 const uint8_t *index,
171 for (y = 0; y < height; y++) {
172 for (x = 0; x < width; x++) {
173 int v = lut[index[(y << 1) * ilinesize + (x << 1)]];
175 if (v >= 0 && v <= max) {
186 static void pseudocolor_filter_11d(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[(y >> 1) * ilinesize + (x >> 1)]];
201 if (v >= 0 && v <= max) {
212 static void pseudocolor_filter_10(int max, int width, int height,
213 const uint8_t *index,
223 for (y = 0; y < height; y++) {
224 for (x = 0; x < width; x++) {
225 int v = lut[index[x << 1]];
227 if (v >= 0 && v <= max) {
239 static void pseudocolor_filter_10d(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[x >> 1]];
254 if (v >= 0 && v <= max) {
266 static void pseudocolor_filter_16(int max, int width, int height,
267 const uint8_t *iindex,
275 const uint16_t *index = (const uint16_t *)iindex;
276 const uint16_t *src = (const uint16_t *)ssrc;
277 uint16_t *dst = (uint16_t *)ddst;
280 for (y = 0; y < height; y++) {
281 for (x = 0; x < width; x++) {
282 int v = lut[index[x]];
284 if (v >= 0 && v <= max) {
290 index += ilinesize / 2;
291 src += slinesize / 2;
292 dst += dlinesize / 2;
296 static void pseudocolor_filter_16_10(int max, int width, int height,
297 const uint8_t *iindex,
305 const uint16_t *index = (const uint16_t *)iindex;
306 const uint16_t *src = (const uint16_t *)ssrc;
307 uint16_t *dst = (uint16_t *)ddst;
310 for (y = 0; y < height; y++) {
311 for (x = 0; x < width; x++) {
312 int v = lut[index[x << 1]];
314 if (v >= 0 && v <= max) {
320 index += ilinesize / 2;
321 src += slinesize / 2;
322 dst += dlinesize / 2;
326 static void pseudocolor_filter_16_10d(int max, int width, int height,
327 const uint8_t *iindex,
335 const uint16_t *index = (const uint16_t *)iindex;
336 const uint16_t *src = (const uint16_t *)ssrc;
337 uint16_t *dst = (uint16_t *)ddst;
340 for (y = 0; y < height; y++) {
341 for (x = 0; x < width; x++) {
342 int v = lut[index[x >> 1]];
344 if (v >= 0 && v <= max) {
350 index += ilinesize / 2;
351 src += slinesize / 2;
352 dst += dlinesize / 2;
356 static void pseudocolor_filter_16_11(int max, int width, int height,
357 const uint8_t *iindex,
365 const uint16_t *index = (const uint16_t *)iindex;
366 const uint16_t *src = (const uint16_t *)ssrc;
367 uint16_t *dst = (uint16_t *)ddst;
374 for (y = 0; y < height; y++) {
375 for (x = 0; x < width; x++) {
376 int v = lut[index[(y << 1) * ilinesize + (x << 1)]];
378 if (v >= 0 && v <= max) {
389 static void pseudocolor_filter_16_11d(int max, int width, int height,
390 const uint8_t *iindex,
398 const uint16_t *index = (const uint16_t *)iindex;
399 const uint16_t *src = (const uint16_t *)ssrc;
400 uint16_t *dst = (uint16_t *)ddst;
407 for (y = 0; y < height; y++) {
408 for (x = 0; x < width; x++) {
409 int v = lut[index[(y >> 1) * ilinesize + (x >> 1)]];
411 if (v >= 0 && v <= max) {
422 static int config_input(AVFilterLink *inlink)
424 AVFilterContext *ctx = inlink->dst;
425 PseudoColorContext *s = ctx->priv;
426 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
427 int depth, ret, hsub, vsub, color;
429 depth = desc->comp[0].depth;
430 s->max = (1 << depth) - 1;
431 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
433 if (s->index >= s->nb_planes) {
434 av_log(ctx, AV_LOG_ERROR, "index out of allowed range\n");
435 return AVERROR(EINVAL);
438 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
441 hsub = desc->log2_chroma_w;
442 vsub = desc->log2_chroma_h;
443 s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
444 s->height[0] = s->height[3] = inlink->h;
445 s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
446 s->width[0] = s->width[3] = inlink->w;
448 s->var_values[VAR_W] = inlink->w;
449 s->var_values[VAR_H] = inlink->h;
451 s->var_values[VAR_YMIN] = 16 * (1 << (depth - 8));
452 s->var_values[VAR_UMIN] = 16 * (1 << (depth - 8));
453 s->var_values[VAR_VMIN] = 16 * (1 << (depth - 8));
454 s->var_values[VAR_AMIN] = 0;
455 s->var_values[VAR_YMAX] = 235 * (1 << (depth - 8));
456 s->var_values[VAR_UMAX] = 240 * (1 << (depth - 8));
457 s->var_values[VAR_VMAX] = 240 * (1 << (depth - 8));
458 s->var_values[VAR_AMAX] = s->max;
460 for (color = 0; color < s->nb_planes; color++) {
464 /* create the parsed expression */
465 av_expr_free(s->comp_expr[color]);
466 s->comp_expr[color] = NULL;
467 ret = av_expr_parse(&s->comp_expr[color], s->comp_expr_str[color],
468 var_names, NULL, NULL, NULL, NULL, 0, ctx);
470 av_log(ctx, AV_LOG_ERROR,
471 "Error when parsing the expression '%s' for the component %d and color %d.\n",
472 s->comp_expr_str[color], color, color);
473 return AVERROR(EINVAL);
476 /* compute the lut */
477 for (val = 0; val < FF_ARRAY_ELEMS(s->lut[color]); val++) {
478 s->var_values[VAR_VAL] = val;
480 res = av_expr_eval(s->comp_expr[color], s->var_values, s);
482 av_log(ctx, AV_LOG_ERROR,
483 "Error when evaluating the expression '%s' for the value %d for the component %d.\n",
484 s->comp_expr_str[color], val, color);
485 return AVERROR(EINVAL);
487 s->lut[color][val] = res;
491 switch (inlink->format) {
492 case AV_PIX_FMT_YUV444P:
493 case AV_PIX_FMT_YUVA444P:
494 case AV_PIX_FMT_GBRP:
495 case AV_PIX_FMT_GBRAP:
496 case AV_PIX_FMT_GRAY8:
497 s->filter[0] = s->filter[1] = s->filter[2] = s->filter[3] = pseudocolor_filter;
499 case AV_PIX_FMT_YUV420P:
500 case AV_PIX_FMT_YUVA420P:
504 s->filter[0] = s->filter[3] = pseudocolor_filter;
505 s->filter[1] = s->filter[2] = pseudocolor_filter_11;
509 s->filter[0] = s->filter[3] = pseudocolor_filter_11d;
510 s->filter[1] = s->filter[2] = pseudocolor_filter;
514 case AV_PIX_FMT_YUV422P:
515 case AV_PIX_FMT_YUVA422P:
519 s->filter[0] = s->filter[3] = pseudocolor_filter;
520 s->filter[1] = s->filter[2] = pseudocolor_filter_10;
524 s->filter[0] = s->filter[3] = pseudocolor_filter_10d;
525 s->filter[1] = s->filter[2] = pseudocolor_filter;
529 case AV_PIX_FMT_YUV444P9:
530 case AV_PIX_FMT_YUVA444P9:
531 case AV_PIX_FMT_YUV444P10:
532 case AV_PIX_FMT_YUVA444P10:
533 case AV_PIX_FMT_YUV444P12:
534 case AV_PIX_FMT_YUV444P14:
535 case AV_PIX_FMT_YUV444P16:
536 case AV_PIX_FMT_YUVA444P16:
537 case AV_PIX_FMT_GBRP9:
538 case AV_PIX_FMT_GBRP10:
539 case AV_PIX_FMT_GBRP12:
540 case AV_PIX_FMT_GBRP14:
541 case AV_PIX_FMT_GBRP16:
542 case AV_PIX_FMT_GBRAP10:
543 case AV_PIX_FMT_GBRAP12:
544 case AV_PIX_FMT_GBRAP16:
545 case AV_PIX_FMT_GRAY9:
546 case AV_PIX_FMT_GRAY10:
547 case AV_PIX_FMT_GRAY12:
548 case AV_PIX_FMT_GRAY16:
549 s->filter[0] = s->filter[1] = s->filter[2] = s->filter[3] = pseudocolor_filter_16;
551 case AV_PIX_FMT_YUV422P9:
552 case AV_PIX_FMT_YUVA422P9:
553 case AV_PIX_FMT_YUV422P10:
554 case AV_PIX_FMT_YUVA422P10:
555 case AV_PIX_FMT_YUV422P12:
556 case AV_PIX_FMT_YUV422P14:
557 case AV_PIX_FMT_YUV422P16:
558 case AV_PIX_FMT_YUVA422P16:
562 s->filter[0] = s->filter[3] = pseudocolor_filter_16;
563 s->filter[1] = s->filter[2] = pseudocolor_filter_16_10;
567 s->filter[0] = s->filter[3] = pseudocolor_filter_16_10d;
568 s->filter[1] = s->filter[2] = pseudocolor_filter_16;
572 case AV_PIX_FMT_YUV420P9:
573 case AV_PIX_FMT_YUVA420P9:
574 case AV_PIX_FMT_YUV420P10:
575 case AV_PIX_FMT_YUVA420P10:
576 case AV_PIX_FMT_YUV420P12:
577 case AV_PIX_FMT_YUV420P14:
578 case AV_PIX_FMT_YUV420P16:
579 case AV_PIX_FMT_YUVA420P16:
583 s->filter[0] = s->filter[3] = pseudocolor_filter_16;
584 s->filter[1] = s->filter[2] = pseudocolor_filter_16_11;
588 s->filter[0] = s->filter[3] = pseudocolor_filter_16_11d;
589 s->filter[1] = s->filter[2] = pseudocolor_filter_16;
598 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
600 AVFilterContext *ctx = inlink->dst;
601 PseudoColorContext *s = ctx->priv;
602 AVFilterLink *outlink = ctx->outputs[0];
606 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
609 return AVERROR(ENOMEM);
611 av_frame_copy_props(out, in);
613 for (plane = 0; plane < s->nb_planes; plane++) {
614 const uint8_t *index = in->data[s->index];
615 const uint8_t *src = in->data[plane];
616 uint8_t *dst = out->data[plane];
617 ptrdiff_t ilinesize = in->linesize[s->index];
618 ptrdiff_t slinesize = in->linesize[plane];
619 ptrdiff_t dlinesize = out->linesize[plane];
621 s->filter[plane](s->max, s->width[plane], s->height[plane],
622 index, src, dst, ilinesize, slinesize,
623 dlinesize, s->lut[plane]);
627 return ff_filter_frame(outlink, out);
630 static const AVFilterPad inputs[] = {
633 .type = AVMEDIA_TYPE_VIDEO,
634 .filter_frame = filter_frame,
635 .config_props = config_input,
640 static const AVFilterPad outputs[] = {
643 .type = AVMEDIA_TYPE_VIDEO,
648 static av_cold void uninit(AVFilterContext *ctx)
650 PseudoColorContext *s = ctx->priv;
653 for (i = 0; i < 4; i++) {
654 av_expr_free(s->comp_expr[i]);
655 s->comp_expr[i] = NULL;
659 AVFILTER_DEFINE_CLASS(pseudocolor);
661 AVFilter ff_vf_pseudocolor = {
662 .name = "pseudocolor",
663 .description = NULL_IF_CONFIG_SMALL("Make pseudocolored video frames."),
664 .priv_size = sizeof(PseudoColorContext),
665 .priv_class = &pseudocolor_class,
667 .query_formats = query_formats,
670 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,