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ef416fc2 | 1 | /* |
c0e1af83 | 2 | * "$Id: image-pix.c 6420 2007-03-30 20:00:59Z mike $" |
ef416fc2 | 3 | * |
4 | * Alias PIX image routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
c0e1af83 | 6 | * Copyright 1993-2007 by Easy Software Products. |
ef416fc2 | 7 | * |
8 | * These coded instructions, statements, and computer programs are the | |
9 | * property of Easy Software Products and are protected by Federal | |
10 | * copyright law. Distribution and use rights are outlined in the file | |
11 | * "LICENSE.txt" which should have been included with this file. If this | |
12 | * file is missing or damaged please contact Easy Software Products | |
13 | * at: | |
14 | * | |
15 | * Attn: CUPS Licensing Information | |
16 | * Easy Software Products | |
17 | * 44141 Airport View Drive, Suite 204 | |
18 | * Hollywood, Maryland 20636 USA | |
19 | * | |
20 | * Voice: (301) 373-9600 | |
21 | * EMail: cups-info@cups.org | |
22 | * WWW: http://www.cups.org | |
23 | * | |
24 | * This file is subject to the Apple OS-Developed Software exception. | |
25 | * | |
26 | * Contents: | |
27 | * | |
28 | * _cupsImageReadPIX() - Read a PIX image file. | |
29 | * read_short() - Read a 16-bit integer. | |
30 | */ | |
31 | ||
32 | /* | |
33 | * Include necessary headers... | |
34 | */ | |
35 | ||
36 | #include "image-private.h" | |
37 | ||
38 | ||
39 | /* | |
40 | * Local functions... | |
41 | */ | |
42 | ||
43 | static short read_short(FILE *fp); | |
44 | ||
45 | ||
46 | /* | |
47 | * '_cupsImageReadPIX()' - Read a PIX image file. | |
48 | */ | |
49 | ||
50 | int /* O - Read status */ | |
51 | _cupsImageReadPIX( | |
52 | cups_image_t *img, /* IO - cupsImage */ | |
53 | FILE *fp, /* I - cupsImage file */ | |
54 | cups_icspace_t primary, /* I - Primary choice for colorspace */ | |
55 | cups_icspace_t secondary, /* I - Secondary choice for colorspace */ | |
56 | int saturation, /* I - Color saturation (%) */ | |
57 | int hue, /* I - Color hue (degrees) */ | |
58 | const cups_ib_t *lut) /* I - Lookup table for gamma/brightness */ | |
59 | { | |
60 | short width, /* Width of image */ | |
61 | height, /* Height of image */ | |
62 | depth; /* Depth of image (bits) */ | |
63 | int count, /* Repetition count */ | |
64 | bpp, /* Bytes per pixel */ | |
65 | x, y; /* Looping vars */ | |
66 | cups_ib_t r, g, b; /* Red, green/gray, blue values */ | |
67 | cups_ib_t *in, /* Input pixels */ | |
68 | *out, /* Output pixels */ | |
69 | *ptr; /* Pointer into pixels */ | |
70 | ||
71 | ||
72 | /* | |
73 | * Get the image dimensions and setup the image... | |
74 | */ | |
75 | ||
76 | width = read_short(fp); | |
77 | height = read_short(fp); | |
78 | read_short(fp); | |
79 | read_short(fp); | |
80 | depth = read_short(fp); | |
81 | ||
82 | /* | |
83 | * Check the dimensions of the image. Since the short values used for the | |
84 | * width and height cannot exceed CUPS_IMAGE_MAX_WIDTH or | |
85 | * CUPS_IMAGE_MAX_HEIGHT, we just need to verify they are positive integers. | |
86 | */ | |
87 | ||
88 | if (width <= 0 || height <= 0 || | |
89 | (depth != 8 && depth != 24)) | |
90 | { | |
c0e1af83 | 91 | fprintf(stderr, "DEBUG: Bad PIX image dimensions %dx%dx%d\n", |
ef416fc2 | 92 | width, height, depth); |
93 | fclose(fp); | |
94 | return (1); | |
95 | } | |
96 | ||
97 | if (depth == 8) | |
98 | img->colorspace = secondary; | |
99 | else | |
100 | img->colorspace = (primary == CUPS_IMAGE_RGB_CMYK) ? CUPS_IMAGE_RGB : primary; | |
101 | ||
102 | img->xsize = width; | |
103 | img->ysize = height; | |
104 | ||
105 | cupsImageSetMaxTiles(img, 0); | |
106 | ||
107 | in = malloc(img->xsize * (depth / 8)); | |
108 | bpp = cupsImageGetDepth(img); | |
109 | out = malloc(img->xsize * bpp); | |
110 | ||
111 | /* | |
112 | * Read the image data... | |
113 | */ | |
114 | ||
115 | if (depth == 8) | |
116 | { | |
117 | for (count = 0, y = 0, g = 0; y < img->ysize; y ++) | |
118 | { | |
119 | if (img->colorspace == CUPS_IMAGE_WHITE) | |
120 | ptr = out; | |
121 | else | |
122 | ptr = in; | |
123 | ||
124 | for (x = img->xsize; x > 0; x --, count --) | |
125 | { | |
126 | if (count == 0) | |
127 | { | |
128 | count = getc(fp); | |
129 | g = getc(fp); | |
130 | } | |
131 | ||
132 | *ptr++ = g; | |
133 | } | |
134 | ||
135 | if (img->colorspace != CUPS_IMAGE_WHITE) | |
136 | switch (img->colorspace) | |
137 | { | |
138 | default : | |
139 | cupsImageWhiteToRGB(in, out, img->xsize); | |
140 | break; | |
141 | case CUPS_IMAGE_BLACK : | |
142 | cupsImageWhiteToBlack(in, out, img->xsize); | |
143 | break; | |
144 | case CUPS_IMAGE_CMY : | |
145 | cupsImageWhiteToCMY(in, out, img->xsize); | |
146 | break; | |
147 | case CUPS_IMAGE_CMYK : | |
148 | cupsImageWhiteToCMYK(in, out, img->xsize); | |
149 | break; | |
150 | } | |
151 | ||
152 | if (lut) | |
153 | cupsImageLut(out, img->xsize * bpp, lut); | |
154 | ||
155 | _cupsImagePutRow(img, 0, y, img->xsize, out); | |
156 | } | |
157 | } | |
158 | else | |
159 | { | |
160 | for (count = 0, y = 0, r = 0, g = 0, b = 0; y < img->ysize; y ++) | |
161 | { | |
f301802f | 162 | ptr = in; |
ef416fc2 | 163 | |
164 | for (x = img->xsize; x > 0; x --, count --) | |
165 | { | |
166 | if (count == 0) | |
167 | { | |
168 | count = getc(fp); | |
169 | b = getc(fp); | |
170 | g = getc(fp); | |
171 | r = getc(fp); | |
172 | } | |
173 | ||
174 | *ptr++ = r; | |
175 | *ptr++ = g; | |
176 | *ptr++ = b; | |
177 | } | |
178 | ||
f301802f | 179 | if (saturation != 100 || hue != 0) |
180 | cupsImageRGBAdjust(in, img->xsize, saturation, hue); | |
ef416fc2 | 181 | |
f301802f | 182 | switch (img->colorspace) |
183 | { | |
184 | default : | |
185 | break; | |
186 | ||
187 | case CUPS_IMAGE_WHITE : | |
188 | cupsImageRGBToWhite(in, out, img->xsize); | |
189 | break; | |
190 | case CUPS_IMAGE_RGB : | |
191 | cupsImageRGBToWhite(in, out, img->xsize); | |
192 | break; | |
193 | case CUPS_IMAGE_BLACK : | |
194 | cupsImageRGBToBlack(in, out, img->xsize); | |
195 | break; | |
196 | case CUPS_IMAGE_CMY : | |
197 | cupsImageRGBToCMY(in, out, img->xsize); | |
198 | break; | |
199 | case CUPS_IMAGE_CMYK : | |
200 | cupsImageRGBToCMYK(in, out, img->xsize); | |
201 | break; | |
ef416fc2 | 202 | } |
203 | ||
204 | if (lut) | |
205 | cupsImageLut(out, img->xsize * bpp, lut); | |
206 | ||
207 | _cupsImagePutRow(img, 0, y, img->xsize, out); | |
208 | } | |
209 | } | |
210 | ||
211 | fclose(fp); | |
212 | free(in); | |
213 | free(out); | |
214 | ||
215 | return (0); | |
216 | } | |
217 | ||
218 | ||
219 | /* | |
220 | * 'read_short()' - Read a 16-bit integer. | |
221 | */ | |
222 | ||
223 | static short /* O - Value from file */ | |
224 | read_short(FILE *fp) /* I - File to read from */ | |
225 | { | |
226 | int ch; /* Character from file */ | |
227 | ||
228 | ||
229 | ch = getc(fp); | |
230 | return ((ch << 8) | getc(fp)); | |
231 | } | |
232 | ||
233 | ||
234 | /* | |
c0e1af83 | 235 | * End of "$Id: image-pix.c 6420 2007-03-30 20:00:59Z mike $". |
ef416fc2 | 236 | */ |