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ef416fc2 | 1 | /* |
75bd9771 | 2 | * "$Id: image-pix.c 7221 2008-01-16 22:20:08Z mike $" |
ef416fc2 | 3 | * |
4 | * Alias PIX image routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
91c84a35 | 6 | * Copyright 2007-2008 by Apple Inc. |
c0e1af83 | 7 | * Copyright 1993-2007 by Easy Software Products. |
ef416fc2 | 8 | * |
9 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 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/". | |
ef416fc2 | 14 | * |
15 | * This file is subject to the Apple OS-Developed Software exception. | |
16 | * | |
17 | * Contents: | |
18 | * | |
19 | * _cupsImageReadPIX() - Read a PIX image file. | |
20 | * read_short() - Read a 16-bit integer. | |
21 | */ | |
22 | ||
23 | /* | |
24 | * Include necessary headers... | |
25 | */ | |
26 | ||
27 | #include "image-private.h" | |
28 | ||
29 | ||
30 | /* | |
31 | * Local functions... | |
32 | */ | |
33 | ||
34 | static short read_short(FILE *fp); | |
35 | ||
36 | ||
37 | /* | |
38 | * '_cupsImageReadPIX()' - Read a PIX image file. | |
39 | */ | |
40 | ||
41 | int /* O - Read status */ | |
42 | _cupsImageReadPIX( | |
43 | cups_image_t *img, /* IO - cupsImage */ | |
44 | FILE *fp, /* I - cupsImage file */ | |
45 | cups_icspace_t primary, /* I - Primary choice for colorspace */ | |
46 | cups_icspace_t secondary, /* I - Secondary choice for colorspace */ | |
47 | int saturation, /* I - Color saturation (%) */ | |
48 | int hue, /* I - Color hue (degrees) */ | |
49 | const cups_ib_t *lut) /* I - Lookup table for gamma/brightness */ | |
50 | { | |
51 | short width, /* Width of image */ | |
52 | height, /* Height of image */ | |
53 | depth; /* Depth of image (bits) */ | |
54 | int count, /* Repetition count */ | |
55 | bpp, /* Bytes per pixel */ | |
56 | x, y; /* Looping vars */ | |
57 | cups_ib_t r, g, b; /* Red, green/gray, blue values */ | |
58 | cups_ib_t *in, /* Input pixels */ | |
59 | *out, /* Output pixels */ | |
60 | *ptr; /* Pointer into pixels */ | |
61 | ||
62 | ||
63 | /* | |
64 | * Get the image dimensions and setup the image... | |
65 | */ | |
66 | ||
67 | width = read_short(fp); | |
68 | height = read_short(fp); | |
69 | read_short(fp); | |
70 | read_short(fp); | |
71 | depth = read_short(fp); | |
72 | ||
73 | /* | |
74 | * Check the dimensions of the image. Since the short values used for the | |
75 | * width and height cannot exceed CUPS_IMAGE_MAX_WIDTH or | |
76 | * CUPS_IMAGE_MAX_HEIGHT, we just need to verify they are positive integers. | |
77 | */ | |
78 | ||
79 | if (width <= 0 || height <= 0 || | |
80 | (depth != 8 && depth != 24)) | |
81 | { | |
c0e1af83 | 82 | fprintf(stderr, "DEBUG: Bad PIX image dimensions %dx%dx%d\n", |
ef416fc2 | 83 | width, height, depth); |
84 | fclose(fp); | |
85 | return (1); | |
86 | } | |
87 | ||
88 | if (depth == 8) | |
89 | img->colorspace = secondary; | |
90 | else | |
91 | img->colorspace = (primary == CUPS_IMAGE_RGB_CMYK) ? CUPS_IMAGE_RGB : primary; | |
92 | ||
93 | img->xsize = width; | |
94 | img->ysize = height; | |
95 | ||
96 | cupsImageSetMaxTiles(img, 0); | |
97 | ||
ef416fc2 | 98 | bpp = cupsImageGetDepth(img); |
91c84a35 MS |
99 | |
100 | if ((in = malloc(img->xsize * (depth / 8))) == NULL) | |
101 | { | |
102 | fputs("DEBUG: Unable to allocate memory!\n", stderr); | |
103 | fclose(fp); | |
104 | return (1); | |
105 | } | |
106 | ||
107 | if ((out = malloc(img->xsize * bpp)) == NULL) | |
108 | { | |
109 | fputs("DEBUG: Unable to allocate memory!\n", stderr); | |
110 | fclose(fp); | |
111 | free(in); | |
112 | return (1); | |
113 | } | |
ef416fc2 | 114 | |
115 | /* | |
116 | * Read the image data... | |
117 | */ | |
118 | ||
119 | if (depth == 8) | |
120 | { | |
121 | for (count = 0, y = 0, g = 0; y < img->ysize; y ++) | |
122 | { | |
123 | if (img->colorspace == CUPS_IMAGE_WHITE) | |
124 | ptr = out; | |
125 | else | |
126 | ptr = in; | |
127 | ||
128 | for (x = img->xsize; x > 0; x --, count --) | |
129 | { | |
130 | if (count == 0) | |
131 | { | |
132 | count = getc(fp); | |
133 | g = getc(fp); | |
134 | } | |
135 | ||
136 | *ptr++ = g; | |
137 | } | |
138 | ||
139 | if (img->colorspace != CUPS_IMAGE_WHITE) | |
140 | switch (img->colorspace) | |
141 | { | |
142 | default : | |
143 | cupsImageWhiteToRGB(in, out, img->xsize); | |
144 | break; | |
145 | case CUPS_IMAGE_BLACK : | |
146 | cupsImageWhiteToBlack(in, out, img->xsize); | |
147 | break; | |
148 | case CUPS_IMAGE_CMY : | |
149 | cupsImageWhiteToCMY(in, out, img->xsize); | |
150 | break; | |
151 | case CUPS_IMAGE_CMYK : | |
152 | cupsImageWhiteToCMYK(in, out, img->xsize); | |
153 | break; | |
154 | } | |
155 | ||
156 | if (lut) | |
157 | cupsImageLut(out, img->xsize * bpp, lut); | |
158 | ||
159 | _cupsImagePutRow(img, 0, y, img->xsize, out); | |
160 | } | |
161 | } | |
162 | else | |
163 | { | |
164 | for (count = 0, y = 0, r = 0, g = 0, b = 0; y < img->ysize; y ++) | |
165 | { | |
f301802f | 166 | ptr = in; |
ef416fc2 | 167 | |
168 | for (x = img->xsize; x > 0; x --, count --) | |
169 | { | |
170 | if (count == 0) | |
171 | { | |
172 | count = getc(fp); | |
173 | b = getc(fp); | |
174 | g = getc(fp); | |
175 | r = getc(fp); | |
176 | } | |
177 | ||
178 | *ptr++ = r; | |
179 | *ptr++ = g; | |
180 | *ptr++ = b; | |
181 | } | |
182 | ||
f301802f | 183 | if (saturation != 100 || hue != 0) |
184 | cupsImageRGBAdjust(in, img->xsize, saturation, hue); | |
ef416fc2 | 185 | |
f301802f | 186 | switch (img->colorspace) |
187 | { | |
188 | default : | |
189 | break; | |
190 | ||
191 | case CUPS_IMAGE_WHITE : | |
192 | cupsImageRGBToWhite(in, out, img->xsize); | |
193 | break; | |
194 | case CUPS_IMAGE_RGB : | |
195 | cupsImageRGBToWhite(in, out, img->xsize); | |
196 | break; | |
197 | case CUPS_IMAGE_BLACK : | |
198 | cupsImageRGBToBlack(in, out, img->xsize); | |
199 | break; | |
200 | case CUPS_IMAGE_CMY : | |
201 | cupsImageRGBToCMY(in, out, img->xsize); | |
202 | break; | |
203 | case CUPS_IMAGE_CMYK : | |
204 | cupsImageRGBToCMYK(in, out, img->xsize); | |
205 | break; | |
ef416fc2 | 206 | } |
207 | ||
208 | if (lut) | |
209 | cupsImageLut(out, img->xsize * bpp, lut); | |
210 | ||
211 | _cupsImagePutRow(img, 0, y, img->xsize, out); | |
212 | } | |
213 | } | |
214 | ||
215 | fclose(fp); | |
216 | free(in); | |
217 | free(out); | |
218 | ||
219 | return (0); | |
220 | } | |
221 | ||
222 | ||
223 | /* | |
224 | * 'read_short()' - Read a 16-bit integer. | |
225 | */ | |
226 | ||
227 | static short /* O - Value from file */ | |
228 | read_short(FILE *fp) /* I - File to read from */ | |
229 | { | |
230 | int ch; /* Character from file */ | |
231 | ||
232 | ||
233 | ch = getc(fp); | |
234 | return ((ch << 8) | getc(fp)); | |
235 | } | |
236 | ||
237 | ||
238 | /* | |
75bd9771 | 239 | * End of "$Id: image-pix.c 7221 2008-01-16 22:20:08Z mike $". |
ef416fc2 | 240 | */ |