]>
Commit | Line | Data |
---|---|---|
ac884b6a MS |
1 | /* |
2 | * "$Id$" | |
3 | * | |
71e16022 | 4 | * Test the CMYK color separation code for CUPS. |
ac884b6a | 5 | * |
71e16022 | 6 | * Copyright 2007-2010 by Apple Inc. |
ac884b6a MS |
7 | * Copyright 1993-2006 by Easy Software Products, All Rights Reserved. |
8 | * | |
9 | * These coded instructions, statements, and computer programs are the | |
10 | * property of Apple Inc. and are protected by Federal copyright | |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
12 | * which should have been included with this file. If this file is | |
13 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
14 | * | |
15 | * Contents: | |
16 | * | |
17 | * test_gray() - Test grayscale separations... | |
18 | * test_rgb() - Test color separations... | |
19 | * main() - Do color separation tests. | |
20 | */ | |
21 | ||
22 | /* | |
23 | * Include necessary headers. | |
24 | */ | |
25 | ||
71e16022 | 26 | #include <cups/string-private.h> |
ac884b6a MS |
27 | #include "driver.h" |
28 | #include <sys/stat.h> | |
29 | ||
30 | ||
31 | void test_gray(int num_comps, const char *basename); | |
32 | void test_rgb(int num_comps, const char *basename); | |
33 | ||
34 | ||
35 | /* | |
36 | * 'main()' - Do color separation tests. | |
37 | */ | |
38 | ||
39 | int /* O - Exit status */ | |
40 | main(int argc, /* I - Number of command-line arguments */ | |
41 | char *argv[]) /* I - Command-line arguments */ | |
42 | { | |
43 | /* | |
44 | * Make the test directory... | |
45 | */ | |
46 | ||
47 | mkdir("test", 0755); | |
48 | ||
49 | /* | |
50 | * Run tests for K, Kk, CMY, CMYK, CcMmYK, and CcMmYKk separations... | |
51 | */ | |
52 | ||
53 | test_rgb(1, "test/K-rgb"); | |
54 | test_rgb(2, "test/Kk-rgb"); | |
55 | test_rgb(3, "test/CMY-rgb"); | |
56 | test_rgb(4, "test/CMYK-rgb"); | |
57 | test_rgb(6, "test/CcMmYK-rgb"); | |
58 | test_rgb(7, "test/CcMmYKk-rgb"); | |
59 | ||
60 | test_gray(1, "test/K-gray"); | |
61 | test_gray(2, "test/Kk-gray"); | |
62 | test_gray(3, "test/CMY-gray"); | |
63 | test_gray(4, "test/CMYK-gray"); | |
64 | test_gray(6, "test/CcMmYK-gray"); | |
65 | test_gray(7, "test/CcMmYKk-gray"); | |
66 | ||
67 | /* | |
68 | * Return with no errors... | |
69 | */ | |
70 | ||
71 | return (0); | |
72 | } | |
73 | ||
74 | ||
75 | /* | |
76 | * 'test_gray()' - Test grayscale separations... | |
77 | */ | |
78 | ||
79 | void | |
80 | test_gray(int num_comps, /* I - Number of components */ | |
81 | const char *basename) /* I - Base filename of output */ | |
82 | { | |
83 | int i; /* Looping var */ | |
84 | char filename[255]; /* Output filename */ | |
85 | char line[255]; /* Line from PGM file */ | |
86 | int width, height; /* Width and height of test image */ | |
87 | int x, y; /* Current coordinate in image */ | |
88 | int r, g, b; /* Current RGB color */ | |
89 | unsigned char input[7000]; /* Line to separate */ | |
90 | short output[48000], /* Output separation data */ | |
91 | *outptr; /* Pointer in output */ | |
92 | FILE *in; /* Input PPM file */ | |
93 | FILE *out[CUPS_MAX_CHAN]; | |
94 | /* Output PGM files */ | |
95 | FILE *comp; /* Composite output */ | |
96 | cups_cmyk_t *cmyk; /* Color separation */ | |
97 | ||
98 | ||
99 | /* | |
100 | * Open the test image... | |
101 | */ | |
102 | ||
103 | in = fopen("image.pgm", "rb"); | |
104 | while (fgets(line, sizeof(line), in) != NULL) | |
105 | if (isdigit(line[0])) | |
106 | break; | |
107 | ||
108 | sscanf(line, "%d%d", &width, &height); | |
109 | ||
110 | fgets(line, sizeof(line), in); | |
111 | ||
112 | /* | |
113 | * Create the color separation... | |
114 | */ | |
115 | ||
116 | cmyk = cupsCMYKNew(num_comps); | |
117 | ||
118 | switch (num_comps) | |
119 | { | |
120 | case 2 : /* Kk */ | |
121 | cupsCMYKSetLtDk(cmyk, 0, 0.5, 1.0); | |
122 | break; | |
123 | ||
124 | case 4 : | |
125 | cupsCMYKSetGamma(cmyk, 2, 1.0, 0.9); | |
126 | cupsCMYKSetBlack(cmyk, 0.5, 1.0); | |
127 | break; | |
128 | ||
129 | case 6 : /* CcMmYK */ | |
130 | cupsCMYKSetLtDk(cmyk, 0, 0.5, 1.0); | |
131 | cupsCMYKSetLtDk(cmyk, 2, 0.5, 1.0); | |
132 | cupsCMYKSetGamma(cmyk, 4, 1.0, 0.9); | |
133 | cupsCMYKSetBlack(cmyk, 0.5, 1.0); | |
134 | break; | |
135 | ||
136 | case 7 : /* CcMmYKk */ | |
137 | cupsCMYKSetLtDk(cmyk, 0, 0.5, 1.0); | |
138 | cupsCMYKSetLtDk(cmyk, 2, 0.5, 1.0); | |
139 | cupsCMYKSetGamma(cmyk, 4, 1.0, 0.9); | |
140 | cupsCMYKSetLtDk(cmyk, 5, 0.5, 1.0); | |
141 | break; | |
142 | } | |
143 | ||
144 | /* | |
145 | * Open the color separation files... | |
146 | */ | |
147 | ||
148 | for (i = 0; i < num_comps; i ++) | |
149 | { | |
150 | sprintf(filename, "%s%d.pgm", basename, i); | |
151 | out[i] = fopen(filename, "wb"); | |
152 | ||
153 | fprintf(out[i], "P5\n%d %d 255\n", width, height); | |
154 | } | |
155 | ||
156 | sprintf(filename, "%s.ppm", basename); | |
157 | comp = fopen(filename, "wb"); | |
158 | ||
159 | fprintf(comp, "P6\n%d %d 255\n", width, height); | |
160 | ||
161 | /* | |
162 | * Read the image and do the separations... | |
163 | */ | |
164 | ||
165 | for (y = 0; y < height; y ++) | |
166 | { | |
167 | fread(input, width, 1, in); | |
168 | ||
169 | cupsCMYKDoGray(cmyk, input, output, width); | |
170 | ||
171 | for (x = 0, outptr = output; x < width; x ++, outptr += num_comps) | |
172 | { | |
173 | for (i = 0; i < num_comps; i ++) | |
174 | putc(255 - 255 * outptr[i] / 4095, out[i]); | |
175 | ||
176 | r = 4095; | |
177 | g = 4095; | |
178 | b = 4095; | |
179 | ||
180 | switch (num_comps) | |
181 | { | |
182 | case 1 : | |
183 | r -= outptr[0]; | |
184 | g -= outptr[0]; | |
185 | b -= outptr[0]; | |
186 | break; | |
187 | case 2 : | |
188 | r -= outptr[0]; | |
189 | g -= outptr[0]; | |
190 | b -= outptr[0]; | |
191 | ||
192 | r -= outptr[1] / 2; | |
193 | g -= outptr[1] / 2; | |
194 | b -= outptr[1] / 2; | |
195 | break; | |
196 | case 3 : | |
197 | r -= outptr[0]; | |
198 | g -= outptr[1]; | |
199 | b -= outptr[2]; | |
200 | break; | |
201 | case 4 : | |
202 | r -= outptr[0]; | |
203 | g -= outptr[1]; | |
204 | b -= outptr[2]; | |
205 | ||
206 | r -= outptr[3]; | |
207 | g -= outptr[3]; | |
208 | b -= outptr[3]; | |
209 | break; | |
210 | case 6 : | |
211 | r -= outptr[0] + outptr[1] / 2; | |
212 | g -= outptr[2] + outptr[3] / 3; | |
213 | b -= outptr[4]; | |
214 | ||
215 | r -= outptr[5]; | |
216 | g -= outptr[5]; | |
217 | b -= outptr[5]; | |
218 | break; | |
219 | case 7 : | |
220 | r -= outptr[0] + outptr[1] / 2; | |
221 | g -= outptr[2] + outptr[3] / 3; | |
222 | b -= outptr[4]; | |
223 | ||
224 | r -= outptr[5] + outptr[6] / 2; | |
225 | g -= outptr[5] + outptr[6] / 2; | |
226 | b -= outptr[5] + outptr[6] / 2; | |
227 | break; | |
228 | } | |
229 | ||
230 | if (r < 0) | |
231 | putc(0, comp); | |
232 | else | |
233 | putc(255 * r / 4095, comp); | |
234 | ||
235 | if (g < 0) | |
236 | putc(0, comp); | |
237 | else | |
238 | putc(255 * g / 4095, comp); | |
239 | ||
240 | if (b < 0) | |
241 | putc(0, comp); | |
242 | else | |
243 | putc(255 * b / 4095, comp); | |
244 | } | |
245 | } | |
246 | ||
247 | for (i = 0; i < num_comps; i ++) | |
248 | fclose(out[i]); | |
249 | ||
250 | fclose(comp); | |
251 | fclose(in); | |
252 | ||
253 | cupsCMYKDelete(cmyk); | |
254 | } | |
255 | ||
256 | ||
257 | /* | |
258 | * 'test_rgb()' - Test color separations... | |
259 | */ | |
260 | ||
261 | void | |
262 | test_rgb(int num_comps, /* I - Number of components */ | |
263 | const char *basename) /* I - Base filename of output */ | |
264 | { | |
265 | int i; /* Looping var */ | |
266 | char filename[255]; /* Output filename */ | |
267 | char line[255]; /* Line from PPM file */ | |
268 | int width, height; /* Width and height of test image */ | |
269 | int x, y; /* Current coordinate in image */ | |
270 | int r, g, b; /* Current RGB color */ | |
271 | unsigned char input[7000]; /* Line to separate */ | |
272 | short output[48000], /* Output separation data */ | |
273 | *outptr; /* Pointer in output */ | |
274 | FILE *in; /* Input PPM file */ | |
275 | FILE *out[CUPS_MAX_CHAN]; | |
276 | /* Output PGM files */ | |
277 | FILE *comp; /* Composite output */ | |
278 | cups_cmyk_t *cmyk; /* Color separation */ | |
279 | ||
280 | ||
281 | /* | |
282 | * Open the test image... | |
283 | */ | |
284 | ||
285 | in = fopen("image.ppm", "rb"); | |
286 | while (fgets(line, sizeof(line), in) != NULL) | |
287 | if (isdigit(line[0])) | |
288 | break; | |
289 | ||
290 | sscanf(line, "%d%d", &width, &height); | |
291 | ||
292 | fgets(line, sizeof(line), in); | |
293 | ||
294 | /* | |
295 | * Create the color separation... | |
296 | */ | |
297 | ||
298 | cmyk = cupsCMYKNew(num_comps); | |
299 | ||
300 | cupsCMYKSetBlack(cmyk, 0.5, 1.0); | |
301 | ||
302 | switch (num_comps) | |
303 | { | |
304 | case 2 : /* Kk */ | |
305 | cupsCMYKSetLtDk(cmyk, 0, 0.5, 1.0); | |
306 | break; | |
307 | case 6 : /* CcMmYK */ | |
308 | cupsCMYKSetGamma(cmyk, 0, 1.0, 0.8); | |
309 | cupsCMYKSetLtDk(cmyk, 0, 0.5, 1.0); | |
310 | cupsCMYKSetGamma(cmyk, 2, 1.0, 0.8); | |
311 | cupsCMYKSetLtDk(cmyk, 2, 0.5, 1.0); | |
312 | break; | |
313 | case 7 : /* CcMmYKk */ | |
314 | cupsCMYKSetGamma(cmyk, 0, 1.0, 0.8); | |
315 | cupsCMYKSetLtDk(cmyk, 0, 0.5, 1.0); | |
316 | cupsCMYKSetGamma(cmyk, 2, 1.0, 0.8); | |
317 | cupsCMYKSetLtDk(cmyk, 2, 0.5, 1.0); | |
318 | cupsCMYKSetLtDk(cmyk, 5, 0.5, 1.0); | |
319 | break; | |
320 | } | |
321 | ||
322 | /* | |
323 | * Open the color separation files... | |
324 | */ | |
325 | ||
326 | for (i = 0; i < num_comps; i ++) | |
327 | { | |
328 | sprintf(filename, "%s%d.pgm", basename, i); | |
329 | out[i] = fopen(filename, "wb"); | |
330 | ||
331 | fprintf(out[i], "P5\n%d %d 255\n", width, height); | |
332 | } | |
333 | ||
334 | sprintf(filename, "%s.ppm", basename); | |
335 | comp = fopen(filename, "wb"); | |
336 | ||
337 | fprintf(comp, "P6\n%d %d 255\n", width, height); | |
338 | ||
339 | /* | |
340 | * Read the image and do the separations... | |
341 | */ | |
342 | ||
343 | for (y = 0; y < height; y ++) | |
344 | { | |
345 | fread(input, width, 3, in); | |
346 | ||
347 | cupsCMYKDoRGB(cmyk, input, output, width); | |
348 | ||
349 | for (x = 0, outptr = output; x < width; x ++, outptr += num_comps) | |
350 | { | |
351 | for (i = 0; i < num_comps; i ++) | |
352 | putc(255 - 255 * outptr[i] / 4095, out[i]); | |
353 | ||
354 | r = 4095; | |
355 | g = 4095; | |
356 | b = 4095; | |
357 | ||
358 | switch (num_comps) | |
359 | { | |
360 | case 1 : | |
361 | r -= outptr[0]; | |
362 | g -= outptr[0]; | |
363 | b -= outptr[0]; | |
364 | break; | |
365 | case 2 : | |
366 | r -= outptr[0]; | |
367 | g -= outptr[0]; | |
368 | b -= outptr[0]; | |
369 | ||
370 | r -= outptr[1] / 2; | |
371 | g -= outptr[1] / 2; | |
372 | b -= outptr[1] / 2; | |
373 | break; | |
374 | case 3 : | |
375 | r -= outptr[0]; | |
376 | g -= outptr[1]; | |
377 | b -= outptr[2]; | |
378 | break; | |
379 | case 4 : | |
380 | r -= outptr[0]; | |
381 | g -= outptr[1]; | |
382 | b -= outptr[2]; | |
383 | ||
384 | r -= outptr[3]; | |
385 | g -= outptr[3]; | |
386 | b -= outptr[3]; | |
387 | break; | |
388 | case 6 : | |
389 | r -= outptr[0] + outptr[1] / 2; | |
390 | g -= outptr[2] + outptr[3] / 3; | |
391 | b -= outptr[4]; | |
392 | ||
393 | r -= outptr[5]; | |
394 | g -= outptr[5]; | |
395 | b -= outptr[5]; | |
396 | break; | |
397 | case 7 : | |
398 | r -= outptr[0] + outptr[1] / 2; | |
399 | g -= outptr[2] + outptr[3] / 3; | |
400 | b -= outptr[4]; | |
401 | ||
402 | r -= outptr[5] + outptr[6] / 2; | |
403 | g -= outptr[5] + outptr[6] / 2; | |
404 | b -= outptr[5] + outptr[6] / 2; | |
405 | break; | |
406 | } | |
407 | ||
408 | if (r < 0) | |
409 | putc(0, comp); | |
410 | else | |
411 | putc(255 * r / 4095, comp); | |
412 | ||
413 | if (g < 0) | |
414 | putc(0, comp); | |
415 | else | |
416 | putc(255 * g / 4095, comp); | |
417 | ||
418 | if (b < 0) | |
419 | putc(0, comp); | |
420 | else | |
421 | putc(255 * b / 4095, comp); | |
422 | } | |
423 | } | |
424 | ||
425 | for (i = 0; i < num_comps; i ++) | |
426 | fclose(out[i]); | |
427 | ||
428 | fclose(comp); | |
429 | fclose(in); | |
430 | ||
431 | cupsCMYKDelete(cmyk); | |
432 | } | |
433 | ||
434 | ||
435 | /* | |
436 | * End of "$Id$". | |
437 | */ |