FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2021 Paul B Mahol
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			#include <float.h>
22
23			#include "libavutil/mem.h"
24			#include "libavutil/opt.h"
25			#include "libavutil/pixdesc.h"
26			#include "avfilter.h"
27			#include "filters.h"
28			#include "video.h"
29
30			typedef enum AnalyzeMode {
31			MANUAL,
32			AVERAGE,
33			MINMAX,
34			MEDIAN,
35			NB_ANALYZE
36			} AnalyzeMode;
37
38			typedef struct ColorCorrectContext {
39			const AVClass *class;
40
41			float rl, bl;
42			float rh, bh;
43			float saturation;
44			int analyze;
45
46			int depth;
47			float max, imax;
48
49			int chroma_w, chroma_h;
50			int planeheight[4];
51			int planewidth[4];
52
53			unsigned *uhistogram;
54			unsigned *vhistogram;
55
56			float (*analyzeret)[4];
57
58			int (*do_analyze)(AVFilterContext *s, void *arg,
59			int jobnr, int nb_jobs);
60			int (*do_slice)(AVFilterContext *s, void *arg,
61			int jobnr, int nb_jobs);
62			} ColorCorrectContext;
63
64		✗	static int average_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
65			{
66		✗	ColorCorrectContext *s = ctx->priv;
67		✗	AVFrame *frame = arg;
68		✗	const float imax = s->imax;
69		✗	const int width = s->planewidth[1];
70		✗	const int height = s->planeheight[1];
71		✗	const int slice_start = (height * jobnr) / nb_jobs;
72		✗	const int slice_end = (height * (jobnr + 1)) / nb_jobs;
73		✗	const ptrdiff_t ulinesize = frame->linesize[1];
74		✗	const ptrdiff_t vlinesize = frame->linesize[2];
75		✗	const uint8_t *uptr = (const uint8_t *)frame->data[1] + slice_start * ulinesize;
76		✗	const uint8_t *vptr = (const uint8_t *)frame->data[2] + slice_start * vlinesize;
77		✗	int sum_u = 0, sum_v = 0;
78
79		✗	for (int y = slice_start; y < slice_end; y++) {
80		✗	for (int x = 0; x < width; x++) {
81		✗	sum_u += uptr[x];
82		✗	sum_v += vptr[x];
83			}
84
85		✗	uptr += ulinesize;
86		✗	vptr += vlinesize;
87			}
88
89		✗	s->analyzeret[jobnr][0] = s->analyzeret[jobnr][2] = imax * sum_u / (float)((slice_end - slice_start) * width) - 0.5f;
90		✗	s->analyzeret[jobnr][1] = s->analyzeret[jobnr][3] = imax * sum_v / (float)((slice_end - slice_start) * width) - 0.5f;
91
92		✗	return 0;
93			}
94
95		✗	static int average_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
96			{
97		✗	ColorCorrectContext *s = ctx->priv;
98		✗	AVFrame *frame = arg;
99		✗	const float imax = s->imax;
100		✗	const int width = s->planewidth[1];
101		✗	const int height = s->planeheight[1];
102		✗	const int slice_start = (height * jobnr) / nb_jobs;
103		✗	const int slice_end = (height * (jobnr + 1)) / nb_jobs;
104		✗	const ptrdiff_t ulinesize = frame->linesize[1] / 2;
105		✗	const ptrdiff_t vlinesize = frame->linesize[2] / 2;
106		✗	const uint16_t *uptr = (const uint16_t *)frame->data[1] + slice_start * ulinesize;
107		✗	const uint16_t *vptr = (const uint16_t *)frame->data[2] + slice_start * vlinesize;
108		✗	int64_t sum_u = 0, sum_v = 0;
109
110		✗	for (int y = slice_start; y < slice_end; y++) {
111		✗	for (int x = 0; x < width; x++) {
112		✗	sum_u += uptr[x];
113		✗	sum_v += vptr[x];
114			}
115
116		✗	uptr += ulinesize;
117		✗	vptr += vlinesize;
118			}
119
120		✗	s->analyzeret[jobnr][0] = s->analyzeret[jobnr][2] = imax * sum_u / (float)((slice_end - slice_start) * width) - 0.5f;
121		✗	s->analyzeret[jobnr][1] = s->analyzeret[jobnr][3] = imax * sum_v / (float)((slice_end - slice_start) * width) - 0.5f;
122
123		✗	return 0;
124			}
125
126		✗	static int minmax_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
127			{
128		✗	ColorCorrectContext *s = ctx->priv;
129		✗	AVFrame *frame = arg;
130		✗	const float imax = s->imax;
131		✗	const int width = s->planewidth[1];
132		✗	const int height = s->planeheight[1];
133		✗	const int slice_start = (height * jobnr) / nb_jobs;
134		✗	const int slice_end = (height * (jobnr + 1)) / nb_jobs;
135		✗	const ptrdiff_t ulinesize = frame->linesize[1];
136		✗	const ptrdiff_t vlinesize = frame->linesize[2];
137		✗	const uint8_t *uptr = (const uint8_t *)frame->data[1] + slice_start * ulinesize;
138		✗	const uint8_t *vptr = (const uint8_t *)frame->data[2] + slice_start * vlinesize;
139		✗	int min_u = 255, min_v = 255;
140		✗	int max_u = 0, max_v = 0;
141
142		✗	for (int y = slice_start; y < slice_end; y++) {
143		✗	for (int x = 0; x < width; x++) {
144		✗	min_u = FFMIN(min_u, uptr[x]);
145		✗	min_v = FFMIN(min_v, vptr[x]);
146		✗	max_u = FFMAX(max_u, uptr[x]);
147		✗	max_v = FFMAX(max_v, vptr[x]);
148			}
149
150		✗	uptr += ulinesize;
151		✗	vptr += vlinesize;
152			}
153
154		✗	s->analyzeret[jobnr][0] = imax * min_u - 0.5f;
155		✗	s->analyzeret[jobnr][1] = imax * min_v - 0.5f;
156		✗	s->analyzeret[jobnr][2] = imax * max_u - 0.5f;
157		✗	s->analyzeret[jobnr][3] = imax * max_v - 0.5f;
158
159		✗	return 0;
160			}
161
162		✗	static int minmax_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
163			{
164		✗	ColorCorrectContext *s = ctx->priv;
165		✗	AVFrame *frame = arg;
166		✗	const float imax = s->imax;
167		✗	const int width = s->planewidth[1];
168		✗	const int height = s->planeheight[1];
169		✗	const int slice_start = (height * jobnr) / nb_jobs;
170		✗	const int slice_end = (height * (jobnr + 1)) / nb_jobs;
171		✗	const ptrdiff_t ulinesize = frame->linesize[1] / 2;
172		✗	const ptrdiff_t vlinesize = frame->linesize[2] / 2;
173		✗	const uint16_t *uptr = (const uint16_t *)frame->data[1] + slice_start * ulinesize;
174		✗	const uint16_t *vptr = (const uint16_t *)frame->data[2] + slice_start * vlinesize;
175		✗	int min_u = INT_MAX, min_v = INT_MAX;
176		✗	int max_u = INT_MIN, max_v = INT_MIN;
177
178		✗	for (int y = slice_start; y < slice_end; y++) {
179		✗	for (int x = 0; x < width; x++) {
180		✗	min_u = FFMIN(min_u, uptr[x]);
181		✗	min_v = FFMIN(min_v, vptr[x]);
182		✗	max_u = FFMAX(max_u, uptr[x]);
183		✗	max_v = FFMAX(max_v, vptr[x]);
184			}
185
186		✗	uptr += ulinesize;
187		✗	vptr += vlinesize;
188			}
189
190		✗	s->analyzeret[jobnr][0] = imax * min_u - 0.5f;
191		✗	s->analyzeret[jobnr][1] = imax * min_v - 0.5f;
192		✗	s->analyzeret[jobnr][2] = imax * max_u - 0.5f;
193		✗	s->analyzeret[jobnr][3] = imax * max_v - 0.5f;
194
195		✗	return 0;
196			}
197
198		✗	static int median_8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
199			{
200		✗	ColorCorrectContext *s = ctx->priv;
201		✗	AVFrame *frame = arg;
202		✗	const float imax = s->imax;
203		✗	const int width = s->planewidth[1];
204		✗	const int height = s->planeheight[1];
205		✗	const ptrdiff_t ulinesize = frame->linesize[1];
206		✗	const ptrdiff_t vlinesize = frame->linesize[2];
207		✗	const uint8_t *uptr = (const uint8_t *)frame->data[1];
208		✗	const uint8_t *vptr = (const uint8_t *)frame->data[2];
209		✗	unsigned *uhistogram = s->uhistogram;
210		✗	unsigned *vhistogram = s->vhistogram;
211		✗	const int half_size = width * height / 2;
212		✗	int umedian = s->max, vmedian = s->max;
213		✗	unsigned ucnt = 0, vcnt = 0;
214
215		✗	memset(uhistogram, 0, sizeof(*uhistogram) * (s->max + 1));
216		✗	memset(vhistogram, 0, sizeof(*vhistogram) * (s->max + 1));
217
218		✗	for (int y = 0; y < height; y++) {
219		✗	for (int x = 0; x < width; x++) {
220		✗	uhistogram[uptr[x]]++;
221		✗	vhistogram[vptr[x]]++;
222			}
223
224		✗	uptr += ulinesize;
225		✗	vptr += vlinesize;
226			}
227
228		✗	for (int i = 0; i < s->max + 1; i++) {
229		✗	ucnt += uhistogram[i];
230		✗	if (ucnt >= half_size) {
231		✗	umedian = i;
232		✗	break;
233			}
234			}
235
236		✗	for (int i = 0; i < s->max + 1; i++) {
237		✗	vcnt += vhistogram[i];
238		✗	if (vcnt >= half_size) {
239		✗	vmedian = i;
240		✗	break;
241			}
242			}
243
244		✗	s->analyzeret[0][0] = imax * umedian - 0.5f;
245		✗	s->analyzeret[0][1] = imax * vmedian - 0.5f;
246		✗	s->analyzeret[0][2] = imax * umedian - 0.5f;
247		✗	s->analyzeret[0][3] = imax * vmedian - 0.5f;
248
249		✗	return 0;
250			}
251
252		✗	static int median_16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
253			{
254		✗	ColorCorrectContext *s = ctx->priv;
255		✗	AVFrame *frame = arg;
256		✗	const float imax = s->imax;
257		✗	const int width = s->planewidth[1];
258		✗	const int height = s->planeheight[1];
259		✗	const ptrdiff_t ulinesize = frame->linesize[1] / 2;
260		✗	const ptrdiff_t vlinesize = frame->linesize[2] / 2;
261		✗	const uint16_t *uptr = (const uint16_t *)frame->data[1];
262		✗	const uint16_t *vptr = (const uint16_t *)frame->data[2];
263		✗	unsigned *uhistogram = s->uhistogram;
264		✗	unsigned *vhistogram = s->vhistogram;
265		✗	const int half_size = width * height / 2;
266		✗	int umedian = s->max, vmedian = s->max;
267		✗	unsigned ucnt = 0, vcnt = 0;
268
269		✗	memset(uhistogram, 0, sizeof(*uhistogram) * (s->max + 1));
270		✗	memset(vhistogram, 0, sizeof(*vhistogram) * (s->max + 1));
271
272		✗	for (int y = 0; y < height; y++) {
273		✗	for (int x = 0; x < width; x++) {
274		✗	uhistogram[uptr[x]]++;
275		✗	vhistogram[vptr[x]]++;
276			}
277
278		✗	uptr += ulinesize;
279		✗	vptr += vlinesize;
280			}
281
282		✗	for (int i = 0; i < s->max + 1; i++) {
283		✗	ucnt += uhistogram[i];
284		✗	if (ucnt >= half_size) {
285		✗	umedian = i;
286		✗	break;
287			}
288			}
289
290		✗	for (int i = 0; i < s->max + 1; i++) {
291		✗	vcnt += vhistogram[i];
292		✗	if (vcnt >= half_size) {
293		✗	vmedian = i;
294		✗	break;
295			}
296			}
297
298		✗	s->analyzeret[0][0] = imax * umedian - 0.5f;
299		✗	s->analyzeret[0][1] = imax * vmedian - 0.5f;
300		✗	s->analyzeret[0][2] = imax * umedian - 0.5f;
301		✗	s->analyzeret[0][3] = imax * vmedian - 0.5f;
302
303		✗	return 0;
304			}
305
306			#define PROCESS() \
307			float y = yptr[x * chroma_w] * imax; \
308			float u = uptr[x] * imax - .5f; \
309			float v = vptr[x] * imax - .5f; \
310			float nu, nv; \
311			\
312			nu = saturation * (u + y * bd + bl); \
313			nv = saturation * (v + y * rd + rl);
314
315		✗	static int colorcorrect_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
316			{
317		✗	ColorCorrectContext *s = ctx->priv;
318		✗	AVFrame *frame = arg;
319		✗	const float max = s->max;
320		✗	const float imax = s->imax;
321		✗	const int chroma_w = s->chroma_w;
322		✗	const int chroma_h = s->chroma_h;
323		✗	const int width = s->planewidth[1];
324		✗	const int height = s->planeheight[1];
325		✗	const int slice_start = (height * jobnr) / nb_jobs;
326		✗	const int slice_end = (height * (jobnr + 1)) / nb_jobs;
327		✗	const ptrdiff_t ylinesize = frame->linesize[0];
328		✗	const ptrdiff_t ulinesize = frame->linesize[1];
329		✗	const ptrdiff_t vlinesize = frame->linesize[2];
330		✗	uint8_t *yptr = frame->data[0] + slice_start * chroma_h * ylinesize;
331		✗	uint8_t *uptr = frame->data[1] + slice_start * ulinesize;
332		✗	uint8_t *vptr = frame->data[2] + slice_start * vlinesize;
333		✗	const float saturation = s->saturation;
334		✗	const float bl = s->bl;
335		✗	const float rl = s->rl;
336		✗	const float bd = s->bh - bl;
337		✗	const float rd = s->rh - rl;
338
339		✗	for (int y = slice_start; y < slice_end; y++) {
340		✗	for (int x = 0; x < width; x++) {
341		✗	PROCESS()
342
343		✗	uptr[x] = av_clip_uint8((nu + 0.5f) * max);
344		✗	vptr[x] = av_clip_uint8((nv + 0.5f) * max);
345			}
346
347		✗	yptr += ylinesize * chroma_h;
348		✗	uptr += ulinesize;
349		✗	vptr += vlinesize;
350			}
351
352		✗	return 0;
353			}
354
355		✗	static int colorcorrect_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
356			{
357		✗	ColorCorrectContext *s = ctx->priv;
358		✗	AVFrame *frame = arg;
359		✗	const int depth = s->depth;
360		✗	const float max = s->max;
361		✗	const float imax = s->imax;
362		✗	const int chroma_w = s->chroma_w;
363		✗	const int chroma_h = s->chroma_h;
364		✗	const int width = s->planewidth[1];
365		✗	const int height = s->planeheight[1];
366		✗	const int slice_start = (height * jobnr) / nb_jobs;
367		✗	const int slice_end = (height * (jobnr + 1)) / nb_jobs;
368		✗	const ptrdiff_t ylinesize = frame->linesize[0] / 2;
369		✗	const ptrdiff_t ulinesize = frame->linesize[1] / 2;
370		✗	const ptrdiff_t vlinesize = frame->linesize[2] / 2;
371		✗	uint16_t *yptr = (uint16_t *)frame->data[0] + slice_start * chroma_h * ylinesize;
372		✗	uint16_t *uptr = (uint16_t *)frame->data[1] + slice_start * ulinesize;
373		✗	uint16_t *vptr = (uint16_t *)frame->data[2] + slice_start * vlinesize;
374		✗	const float saturation = s->saturation;
375		✗	const float bl = s->bl;
376		✗	const float rl = s->rl;
377		✗	const float bd = s->bh - bl;
378		✗	const float rd = s->rh - rl;
379
380		✗	for (int y = slice_start; y < slice_end; y++) {
381		✗	for (int x = 0; x < width; x++) {
382		✗	PROCESS()
383
384		✗	uptr[x] = av_clip_uintp2_c((nu + 0.5f) * max, depth);
385		✗	vptr[x] = av_clip_uintp2_c((nv + 0.5f) * max, depth);
386			}
387
388		✗	yptr += ylinesize * chroma_h;
389		✗	uptr += ulinesize;
390		✗	vptr += vlinesize;
391			}
392
393		✗	return 0;
394			}
395
396		✗	static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
397			{
398		✗	AVFilterContext *ctx = inlink->dst;
399		✗	ColorCorrectContext *s = ctx->priv;
400		✗	const int nb_threads = s->analyze == MEDIAN ? 1 : FFMIN(s->planeheight[1], ff_filter_get_nb_threads(ctx));
401
402		✗	if (s->analyze) {
403		✗	const int nb_athreads = s->analyze == MEDIAN ? 1 : nb_threads;
404		✗	float bl = 0.f, rl = 0.f, bh = 0.f, rh = 0.f;
405
406		✗	ff_filter_execute(ctx, s->do_analyze, frame, NULL, nb_athreads);
407
408		✗	for (int i = 0; i < nb_athreads; i++) {
409		✗	bl += s->analyzeret[i][0];
410		✗	rl += s->analyzeret[i][1];
411		✗	bh += s->analyzeret[i][2];
412		✗	rh += s->analyzeret[i][3];
413			}
414
415		✗	bl /= nb_athreads;
416		✗	rl /= nb_athreads;
417		✗	bh /= nb_athreads;
418		✗	rh /= nb_athreads;
419
420		✗	s->bl = -bl;
421		✗	s->rl = -rl;
422		✗	s->bh = -bh;
423		✗	s->rh = -rh;
424			}
425
426		✗	ff_filter_execute(ctx, s->do_slice, frame, NULL, nb_threads);
427
428		✗	return ff_filter_frame(ctx->outputs[0], frame);
429			}
430
431			static const enum AVPixelFormat pixel_fmts[] = {
432			AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV444P,
433			AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
434			AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
435			AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
436			AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV440P10, AV_PIX_FMT_YUV444P10,
437			AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV440P12, AV_PIX_FMT_YUV420P12,
438			AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
439			AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
440			AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
441			AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
442			AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
443			AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
444			AV_PIX_FMT_NONE
445			};
446
447		✗	static av_cold int config_input(AVFilterLink *inlink)
448			{
449		✗	AVFilterContext *ctx = inlink->dst;
450		✗	ColorCorrectContext *s = ctx->priv;
451		✗	const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
452
453		✗	s->depth = desc->comp[0].depth;
454		✗	s->max = (1 << s->depth) - 1;
455		✗	s->imax = 1.f / s->max;
456		✗	s->do_slice = s->depth <= 8 ? colorcorrect_slice8 : colorcorrect_slice16;
457
458		✗	s->uhistogram = av_calloc(s->max == 255 ? 256 : 65536, sizeof(*s->uhistogram));
459		✗	if (!s->uhistogram)
460		✗	return AVERROR(ENOMEM);
461
462		✗	s->vhistogram = av_calloc(s->max == 255 ? 256 : 65536, sizeof(*s->vhistogram));
463		✗	if (!s->vhistogram)
464		✗	return AVERROR(ENOMEM);
465
466		✗	s->analyzeret = av_calloc(inlink->h, sizeof(*s->analyzeret));
467		✗	if (!s->analyzeret)
468		✗	return AVERROR(ENOMEM);
469
470		✗	switch (s->analyze) {
471		✗	case MANUAL:
472		✗	break;
473		✗	case AVERAGE:
474		✗	s->do_analyze = s->depth <= 8 ? average_slice8 : average_slice16;
475		✗	break;
476		✗	case MINMAX:
477		✗	s->do_analyze = s->depth <= 8 ? minmax_slice8 : minmax_slice16;
478		✗	break;
479		✗	case MEDIAN:
480		✗	s->do_analyze = s->depth <= 8 ? median_8 : median_16;
481		✗	break;
482		✗	default:
483		✗	return AVERROR_BUG;
484			}
485
486		✗	s->chroma_w = 1 << desc->log2_chroma_w;
487		✗	s->chroma_h = 1 << desc->log2_chroma_h;
488		✗	s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
489		✗	s->planeheight[0] = s->planeheight[3] = inlink->h;
490		✗	s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
491		✗	s->planewidth[0] = s->planewidth[3] = inlink->w;
492
493		✗	return 0;
494			}
495
496		✗	static av_cold void uninit(AVFilterContext *ctx)
497			{
498		✗	ColorCorrectContext *s = ctx->priv;
499
500		✗	av_freep(&s->analyzeret);
501		✗	av_freep(&s->uhistogram);
502		✗	av_freep(&s->vhistogram);
503		✗	}
504
505			static const AVFilterPad colorcorrect_inputs[] = {
506			{
507			.name = "default",
508			.type = AVMEDIA_TYPE_VIDEO,
509			.flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE,
510			.filter_frame = filter_frame,
511			.config_props = config_input,
512			},
513			};
514
515			#define OFFSET(x) offsetof(ColorCorrectContext, x)
516			#define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
517
518			static const AVOption colorcorrect_options[] = {
519			{ "rl", "set the red shadow spot", OFFSET(rl), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, VF },
520			{ "bl", "set the blue shadow spot", OFFSET(bl), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, VF },
521			{ "rh", "set the red highlight spot", OFFSET(rh), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, VF },
522			{ "bh", "set the blue highlight spot", OFFSET(bh), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, VF },
523			{ "saturation", "set the amount of saturation", OFFSET(saturation), AV_OPT_TYPE_FLOAT, {.dbl=1}, -3, 3, VF },
524			{ "analyze", "set the analyze mode", OFFSET(analyze), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_ANALYZE-1, VF, .unit = "analyze" },
525			{ "manual", "manually set options", 0, AV_OPT_TYPE_CONST, {.i64=MANUAL}, 0, 0, VF, .unit = "analyze" },
526			{ "average", "use average pixels", 0, AV_OPT_TYPE_CONST, {.i64=AVERAGE}, 0, 0, VF, .unit = "analyze" },
527			{ "minmax", "use minmax pixels", 0, AV_OPT_TYPE_CONST, {.i64=MINMAX}, 0, 0, VF, .unit = "analyze" },
528			{ "median", "use median pixels", 0, AV_OPT_TYPE_CONST, {.i64=MEDIAN}, 0, 0, VF, .unit = "analyze" },
529			{ NULL }
530			};
531
532			AVFILTER_DEFINE_CLASS(colorcorrect);
533
534			const AVFilter ff_vf_colorcorrect = {
535			.name = "colorcorrect",
536			.description = NULL_IF_CONFIG_SMALL("Adjust color white balance selectively for blacks and whites."),
537			.priv_size = sizeof(ColorCorrectContext),
538			.priv_class = &colorcorrect_class,
539			.uninit = uninit,
540			FILTER_INPUTS(colorcorrect_inputs),
541			FILTER_OUTPUTS(ff_video_default_filterpad),
542			FILTER_PIXFMTS_ARRAY(pixel_fmts),
543			.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
544			.process_command = ff_filter_process_command,
545			};
546