FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2015-2016 Clément Bœsch <u pkh me>
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			* @see http://blog.pkh.me/p/22-understanding-selective-coloring-in-adobe-photoshop.html
23			* @todo
24			* - use integers so it can be made bitexact and a FATE test can be added
25			*/
26
27			#include "libavutil/avassert.h"
28			#include "libavutil/file.h"
29			#include "libavutil/intreadwrite.h"
30			#include "libavutil/opt.h"
31			#include "libavutil/pixdesc.h"
32			#include "libavcodec/mathops.h" // for mid_pred(), which is a macro so no link dependency
33			#include "avfilter.h"
34			#include "drawutils.h"
35			#include "filters.h"
36			#include "video.h"
37
38			#define R 0
39			#define G 1
40			#define B 2
41			#define A 3
42
43			enum color_range {
44			// WARNING: do NOT reorder (see parse_psfile())
45			RANGE_REDS,
46			RANGE_YELLOWS,
47			RANGE_GREENS,
48			RANGE_CYANS,
49			RANGE_BLUES,
50			RANGE_MAGENTAS,
51			RANGE_WHITES,
52			RANGE_NEUTRALS,
53			RANGE_BLACKS,
54			NB_RANGES
55			};
56
57			enum correction_method {
58			CORRECTION_METHOD_ABSOLUTE,
59			CORRECTION_METHOD_RELATIVE,
60			NB_CORRECTION_METHODS,
61			};
62
63			static const char *const color_names[NB_RANGES] = {
64			"red", "yellow", "green", "cyan", "blue", "magenta", "white", "neutral", "black"
65			};
66
67			typedef int (*get_range_scale_func)(int r, int g, int b, int min_val, int max_val);
68
69			struct process_range {
70			int range_id;
71			uint32_t mask;
72			get_range_scale_func get_scale;
73			};
74
75			typedef struct ThreadData {
76			AVFrame *in, *out;
77			} ThreadData;
78
79			typedef struct SelectiveColorContext {
80			const AVClass *class;
81			int correction_method;
82			char *opt_cmyk_adjust[NB_RANGES];
83			float cmyk_adjust[NB_RANGES][4];
84			struct process_range process_ranges[NB_RANGES]; // color ranges to process
85			int nb_process_ranges;
86			char *psfile;
87			uint8_t rgba_map[4];
88			int is_16bit;
89			int step;
90			} SelectiveColorContext;
91
92			#define OFFSET(x) offsetof(SelectiveColorContext, x)
93			#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
94			#define RANGE_OPTION(color_name, range) \
95			{ color_name"s", "adjust "color_name" regions", OFFSET(opt_cmyk_adjust[range]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS }
96
97			static const AVOption selectivecolor_options[] = {
98			{ "correction_method", "select correction method", OFFSET(correction_method), AV_OPT_TYPE_INT, {.i64 = CORRECTION_METHOD_ABSOLUTE}, 0, NB_CORRECTION_METHODS-1, FLAGS, .unit = "correction_method" },
99			{ "absolute", NULL, 0, AV_OPT_TYPE_CONST, {.i64=CORRECTION_METHOD_ABSOLUTE}, INT_MIN, INT_MAX, FLAGS, .unit = "correction_method" },
100			{ "relative", NULL, 0, AV_OPT_TYPE_CONST, {.i64=CORRECTION_METHOD_RELATIVE}, INT_MIN, INT_MAX, FLAGS, .unit = "correction_method" },
101			RANGE_OPTION("red", RANGE_REDS),
102			RANGE_OPTION("yellow", RANGE_YELLOWS),
103			RANGE_OPTION("green", RANGE_GREENS),
104			RANGE_OPTION("cyan", RANGE_CYANS),
105			RANGE_OPTION("blue", RANGE_BLUES),
106			RANGE_OPTION("magenta", RANGE_MAGENTAS),
107			RANGE_OPTION("white", RANGE_WHITES),
108			RANGE_OPTION("neutral", RANGE_NEUTRALS),
109			RANGE_OPTION("black", RANGE_BLACKS),
110			{ "psfile", "set Photoshop selectivecolor file name", OFFSET(psfile), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
111			{ NULL }
112			};
113
114			AVFILTER_DEFINE_CLASS(selectivecolor);
115
116		✗	static int get_rgb_scale(int r, int g, int b, int min_val, int max_val)
117			{
118		✗	return max_val - mid_pred(r, g, b);
119			}
120
121		✗	static int get_cmy_scale(int r, int g, int b, int min_val, int max_val)
122			{
123		✗	return mid_pred(r, g, b) - min_val;
124			}
125
126			#define DECLARE_RANGE_SCALE_FUNCS(nbits) \
127			static int get_neutrals_scale##nbits(int r, int g, int b, int min_val, int max_val) \
128			{ \
129			/* 1 - (|max-0.5| + |min-0.5|) */ \
130			return (((1<<nbits)-1)*2 - ( abs((max_val<<1) - ((1<<nbits)-1)) \
131			+ abs((min_val<<1) - ((1<<nbits)-1))) + 1) >> 1; \
132			} \
133			\
134			static int get_whites_scale##nbits(int r, int g, int b, int min_val, int max_val) \
135			{ \
136			/* (min - 0.5) * 2 */ \
137			return (min_val<<1) - ((1<<nbits)-1); \
138			} \
139			\
140			static int get_blacks_scale##nbits(int r, int g, int b, int min_val, int max_val) \
141			{ \
142			/* (0.5 - max) * 2 */ \
143			return ((1<<nbits)-1) - (max_val<<1); \
144			} \
145
146		✗	DECLARE_RANGE_SCALE_FUNCS(8)
147		✗	DECLARE_RANGE_SCALE_FUNCS(16)
148
149		✗	static int register_range(SelectiveColorContext *s, int range_id)
150			{
151		✗	const float *cmyk = s->cmyk_adjust[range_id];
152
153			/* If the color range has user settings, register the color range
154			* as "to be processed" */
155		✗	if (cmyk[0] || cmyk[1] || cmyk[2] || cmyk[3]) {
156		✗	struct process_range *pr = &s->process_ranges[s->nb_process_ranges++];
157
158		✗	if (cmyk[0] < -1.0 || cmyk[0] > 1.0 ||
159		✗	cmyk[1] < -1.0 || cmyk[1] > 1.0 ||
160		✗	cmyk[2] < -1.0 || cmyk[2] > 1.0 ||
161		✗	cmyk[3] < -1.0 || cmyk[3] > 1.0) {
162		✗	av_log(s, AV_LOG_ERROR, "Invalid %s adjustments (%g %g %g %g). "
163			"Settings must be set in [-1;1] range\n",
164		✗	color_names[range_id], cmyk[0], cmyk[1], cmyk[2], cmyk[3]);
165		✗	return AVERROR(EINVAL);
166			}
167
168		✗	pr->range_id = range_id;
169		✗	pr->mask = 1 << range_id;
170		✗	if (pr->mask & (1<<RANGE_REDS | 1<<RANGE_GREENS | 1<<RANGE_BLUES)) pr->get_scale = get_rgb_scale;
171		✗	else if (pr->mask & (1<<RANGE_CYANS | 1<<RANGE_MAGENTAS | 1<<RANGE_YELLOWS)) pr->get_scale = get_cmy_scale;
172		✗	else if (!s->is_16bit && (pr->mask & 1<<RANGE_WHITES)) pr->get_scale = get_whites_scale8;
173		✗	else if (!s->is_16bit && (pr->mask & 1<<RANGE_NEUTRALS)) pr->get_scale = get_neutrals_scale8;
174		✗	else if (!s->is_16bit && (pr->mask & 1<<RANGE_BLACKS)) pr->get_scale = get_blacks_scale8;
175		✗	else if ( s->is_16bit && (pr->mask & 1<<RANGE_WHITES)) pr->get_scale = get_whites_scale16;
176		✗	else if ( s->is_16bit && (pr->mask & 1<<RANGE_NEUTRALS)) pr->get_scale = get_neutrals_scale16;
177		✗	else if ( s->is_16bit && (pr->mask & 1<<RANGE_BLACKS)) pr->get_scale = get_blacks_scale16;
178			else
179		✗	av_assert0(0);
180			}
181		✗	return 0;
182			}
183
184		✗	static int parse_psfile(AVFilterContext *ctx, const char *fname)
185			{
186			int16_t val;
187			int ret, i, version;
188			uint8_t *buf;
189			size_t size;
190		✗	SelectiveColorContext *s = ctx->priv;
191
192		✗	ret = av_file_map(fname, &buf, &size, 0, NULL);
193		✗	if (ret < 0)
194		✗	return ret;
195
196			#define READ16(dst) do { \
197			if (size < 2) { \
198			ret = AVERROR_INVALIDDATA; \
199			goto end; \
200			} \
201			dst = AV_RB16(buf); \
202			buf += 2; \
203			size -= 2; \
204			} while (0)
205
206		✗	READ16(version);
207		✗	if (version != 1)
208		✗	av_log(s, AV_LOG_WARNING, "Unsupported selective color file version %d, "
209			"the settings might not be loaded properly\n", version);
210
211		✗	READ16(s->correction_method);
212
213			// 1st CMYK entry is reserved/unused
214		✗	for (i = 0; i < FF_ARRAY_ELEMS(s->cmyk_adjust[0]); i++) {
215		✗	READ16(val);
216		✗	if (val)
217		✗	av_log(s, AV_LOG_WARNING, "%c value of first CMYK entry is not 0 "
218		✗	"but %d\n", "CMYK"[i], val);
219			}
220
221		✗	for (i = 0; i < FF_ARRAY_ELEMS(s->cmyk_adjust); i++) {
222			int k;
223		✗	for (k = 0; k < FF_ARRAY_ELEMS(s->cmyk_adjust[0]); k++) {
224		✗	READ16(val);
225		✗	s->cmyk_adjust[i][k] = val / 100.f;
226			}
227		✗	ret = register_range(s, i);
228		✗	if (ret < 0)
229		✗	goto end;
230			}
231
232		✗	end:
233		✗	av_file_unmap(buf, size);
234		✗	return ret;
235			}
236
237		✗	static int config_input(AVFilterLink *inlink)
238			{
239			int i, ret;
240		✗	AVFilterContext *ctx = inlink->dst;
241		✗	SelectiveColorContext *s = ctx->priv;
242		✗	const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
243
244		✗	s->is_16bit = desc->comp[0].depth > 8;
245		✗	s->step = av_get_padded_bits_per_pixel(desc) >> (3 + s->is_16bit);
246
247		✗	ret = ff_fill_rgba_map(s->rgba_map, inlink->format);
248		✗	if (ret < 0)
249		✗	return ret;
250
251			/* If the following conditions are not met, it will cause trouble while
252			* parsing the PS file */
253			av_assert0(FF_ARRAY_ELEMS(s->cmyk_adjust) == 10 - 1);
254			av_assert0(FF_ARRAY_ELEMS(s->cmyk_adjust[0]) == 4);
255
256		✗	if (s->psfile) {
257		✗	ret = parse_psfile(ctx, s->psfile);
258		✗	if (ret < 0)
259		✗	return ret;
260			} else {
261		✗	for (i = 0; i < FF_ARRAY_ELEMS(s->opt_cmyk_adjust); i++) {
262		✗	const char *opt_cmyk_adjust = s->opt_cmyk_adjust[i];
263
264		✗	if (opt_cmyk_adjust) {
265		✗	float *cmyk = s->cmyk_adjust[i];
266
267		✗	sscanf(s->opt_cmyk_adjust[i], "%f %f %f %f", cmyk, cmyk+1, cmyk+2, cmyk+3);
268		✗	ret = register_range(s, i);
269		✗	if (ret < 0)
270		✗	return ret;
271			}
272			}
273			}
274
275		✗	av_log(s, AV_LOG_VERBOSE, "Adjustments:%s\n", s->nb_process_ranges ? "" : " none");
276		✗	for (i = 0; i < s->nb_process_ranges; i++) {
277		✗	const struct process_range *pr = &s->process_ranges[i];
278		✗	const float *cmyk = s->cmyk_adjust[pr->range_id];
279
280		✗	av_log(s, AV_LOG_VERBOSE, "%8ss: C=%6g M=%6g Y=%6g K=%6g\n",
281		✗	color_names[pr->range_id], cmyk[0], cmyk[1], cmyk[2], cmyk[3]);
282			}
283
284		✗	return 0;
285			}
286
287			static const enum AVPixelFormat pix_fmts[] = {
288			AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
289			AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
290			AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
291			AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
292			AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
293			AV_PIX_FMT_RGB48, AV_PIX_FMT_BGR48,
294			AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,
295			AV_PIX_FMT_NONE
296			};
297
298		✗	static inline int comp_adjust(int scale, float value, float adjust, float k, int correction_method)
299			{
300		✗	const float min = -value;
301		✗	const float max = 1.f - value;
302		✗	float res = (-1.f - adjust) * k - adjust;
303		✗	if (correction_method == CORRECTION_METHOD_RELATIVE)
304		✗	res *= max;
305		✗	return lrintf(av_clipf(res, min, max) * scale);
306			}
307
308			#define DECLARE_SELECTIVE_COLOR_FUNC(nbits) \
309			static inline int selective_color_##nbits(AVFilterContext *ctx, ThreadData *td, \
310			int jobnr, int nb_jobs, int direct, int correction_method) \
311			{ \
312			int i, x, y; \
313			const AVFrame *in = td->in; \
314			AVFrame *out = td->out; \
315			const SelectiveColorContext *s = ctx->priv; \
316			const int height = in->height; \
317			const int width = in->width; \
318			const int slice_start = (height * jobnr ) / nb_jobs; \
319			const int slice_end = (height * (jobnr+1)) / nb_jobs; \
320			const int dst_linesize = out->linesize[0] / ((nbits + 7) / 8); \
321			const int src_linesize = in->linesize[0] / ((nbits + 7) / 8); \
322			const uint8_t roffset = s->rgba_map[R]; \
323			const uint8_t goffset = s->rgba_map[G]; \
324			const uint8_t boffset = s->rgba_map[B]; \
325			const uint8_t aoffset = s->rgba_map[A]; \
326			uint##nbits##_t *dst = (uint##nbits##_t *)out->data[0] + slice_start * dst_linesize; \
327			const uint##nbits##_t *src = (const uint##nbits##_t *)in->data[0] + slice_start * src_linesize; \
328			const uint##nbits##_t *src_r = (const uint##nbits##_t *)src + roffset; \
329			const uint##nbits##_t *src_g = (const uint##nbits##_t *)src + goffset; \
330			const uint##nbits##_t *src_b = (const uint##nbits##_t *)src + boffset; \
331			const uint##nbits##_t *src_a = (const uint##nbits##_t *)src + aoffset; \
332			uint##nbits##_t *dst_r = (uint##nbits##_t *)dst + roffset; \
333			uint##nbits##_t *dst_g = (uint##nbits##_t *)dst + goffset; \
334			uint##nbits##_t *dst_b = (uint##nbits##_t *)dst + boffset; \
335			uint##nbits##_t *dst_a = (uint##nbits##_t *)dst + aoffset; \
336			const int mid = 1<<(nbits-1); \
337			const int max = (1<<nbits)-1; \
338			const float scale = 1.f / max; \
339			\
340			for (y = slice_start; y < slice_end; y++) { \
341			for (x = 0; x < width * s->step; x += s->step) { \
342			const int r = src_r[x]; \
343			const int g = src_g[x]; \
344			const int b = src_b[x]; \
345			const int min_color = FFMIN3(r, g, b); \
346			const int max_color = FFMAX3(r, g, b); \
347			const int is_white = (r > mid && g > mid && b > mid); \
348			const int is_neutral = (r || g || b) && \
349			(r != max || g != max || b != max); \
350			const int is_black = (r < mid && g < mid && b < mid); \
351			const uint32_t range_flag = (r == max_color) << RANGE_REDS \
352			| (r == min_color) << RANGE_CYANS \
353			| (g == max_color) << RANGE_GREENS \
354			| (g == min_color) << RANGE_MAGENTAS \
355			| (b == max_color) << RANGE_BLUES \
356			| (b == min_color) << RANGE_YELLOWS \
357			| is_white << RANGE_WHITES \
358			| is_neutral << RANGE_NEUTRALS \
359			| is_black << RANGE_BLACKS; \
360			\
361			const float rnorm = r * scale; \
362			const float gnorm = g * scale; \
363			const float bnorm = b * scale; \
364			int adjust_r = 0, adjust_g = 0, adjust_b = 0; \
365			\
366			for (i = 0; i < s->nb_process_ranges; i++) { \
367			const struct process_range *pr = &s->process_ranges[i]; \
368			\
369			if (range_flag & pr->mask) { \
370			const int scale = pr->get_scale(r, g, b, min_color, max_color); \
371			\
372			if (scale > 0) { \
373			const float *cmyk_adjust = s->cmyk_adjust[pr->range_id]; \
374			const float adj_c = cmyk_adjust[0]; \
375			const float adj_m = cmyk_adjust[1]; \
376			const float adj_y = cmyk_adjust[2]; \
377			const float k = cmyk_adjust[3]; \
378			\
379			adjust_r += comp_adjust(scale, rnorm, adj_c, k, correction_method); \
380			adjust_g += comp_adjust(scale, gnorm, adj_m, k, correction_method); \
381			adjust_b += comp_adjust(scale, bnorm, adj_y, k, correction_method); \
382			} \
383			} \
384			} \
385			\
386			if (!direct || adjust_r || adjust_g || adjust_b) { \
387			dst_r[x] = av_clip_uint##nbits(r + adjust_r); \
388			dst_g[x] = av_clip_uint##nbits(g + adjust_g); \
389			dst_b[x] = av_clip_uint##nbits(b + adjust_b); \
390			if (!direct && s->step == 4) \
391			dst_a[x] = src_a[x]; \
392			} \
393			} \
394			\
395			src_r += src_linesize; \
396			src_g += src_linesize; \
397			src_b += src_linesize; \
398			src_a += src_linesize; \
399			\
400			dst_r += dst_linesize; \
401			dst_g += dst_linesize; \
402			dst_b += dst_linesize; \
403			dst_a += dst_linesize; \
404			} \
405			return 0; \
406			}
407
408			#define DEF_SELECTIVE_COLOR_FUNC(name, direct, correction_method, nbits) \
409			static int selective_color_##name##_##nbits(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
410			{ \
411			return selective_color_##nbits(ctx, arg, jobnr, nb_jobs, direct, correction_method); \
412			}
413
414			#define DEF_SELECTIVE_COLOR_FUNCS(nbits) \
415			DECLARE_SELECTIVE_COLOR_FUNC(nbits) \
416			DEF_SELECTIVE_COLOR_FUNC(indirect_absolute, 0, CORRECTION_METHOD_ABSOLUTE, nbits) \
417			DEF_SELECTIVE_COLOR_FUNC(indirect_relative, 0, CORRECTION_METHOD_RELATIVE, nbits) \
418			DEF_SELECTIVE_COLOR_FUNC( direct_absolute, 1, CORRECTION_METHOD_ABSOLUTE, nbits) \
419			DEF_SELECTIVE_COLOR_FUNC( direct_relative, 1, CORRECTION_METHOD_RELATIVE, nbits)
420
421		✗	DEF_SELECTIVE_COLOR_FUNCS(8)
422		✗	DEF_SELECTIVE_COLOR_FUNCS(16)
423
424			typedef int (*selective_color_func_type)(AVFilterContext *ctx, void *td, int jobnr, int nb_jobs);
425
426		✗	static int filter_frame(AVFilterLink *inlink, AVFrame *in)
427			{
428		✗	AVFilterContext *ctx = inlink->dst;
429		✗	AVFilterLink *outlink = ctx->outputs[0];
430			int direct;
431			AVFrame *out;
432			ThreadData td;
433		✗	const SelectiveColorContext *s = ctx->priv;
434			static const selective_color_func_type funcs[2][2][2] = {
435			{
436			{selective_color_indirect_absolute_8, selective_color_indirect_relative_8},
437			{selective_color_direct_absolute_8, selective_color_direct_relative_8},
438			},{
439			{selective_color_indirect_absolute_16, selective_color_indirect_relative_16},
440			{selective_color_direct_absolute_16, selective_color_direct_relative_16},
441			}
442			};
443
444		✗	if (av_frame_is_writable(in)) {
445		✗	direct = 1;
446		✗	out = in;
447			} else {
448		✗	direct = 0;
449		✗	out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
450		✗	if (!out) {
451		✗	av_frame_free(&in);
452		✗	return AVERROR(ENOMEM);
453			}
454		✗	av_frame_copy_props(out, in);
455			}
456
457		✗	td.in = in;
458		✗	td.out = out;
459		✗	ff_filter_execute(ctx, funcs[s->is_16bit][direct][s->correction_method],
460		✗	&td, NULL, FFMIN(inlink->h, ff_filter_get_nb_threads(ctx)));
461
462		✗	if (!direct)
463		✗	av_frame_free(&in);
464		✗	return ff_filter_frame(outlink, out);
465			}
466
467			static const AVFilterPad selectivecolor_inputs[] = {
468			{
469			.name = "default",
470			.type = AVMEDIA_TYPE_VIDEO,
471			.filter_frame = filter_frame,
472			.config_props = config_input,
473			},
474			};
475
476			const AVFilter ff_vf_selectivecolor = {
477			.name = "selectivecolor",
478			.description = NULL_IF_CONFIG_SMALL("Apply CMYK adjustments to specific color ranges."),
479			.priv_size = sizeof(SelectiveColorContext),
480			FILTER_INPUTS(selectivecolor_inputs),
481			FILTER_OUTPUTS(ff_video_default_filterpad),
482			FILTER_PIXFMTS_ARRAY(pix_fmts),
483			.priv_class = &selectivecolor_class,
484			.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
485			};
486