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ef416fc2 | 1 | /* |
bc44d920 | 2 | * "$Id: image-pix.c 6649 2007-07-11 21:46:42Z mike $" |
ef416fc2 | 3 | * |
4 | * Alias PIX image routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
bc44d920 | 6 | * Copyright 2007 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 | ||
98 | in = malloc(img->xsize * (depth / 8)); | |
99 | bpp = cupsImageGetDepth(img); | |
100 | out = malloc(img->xsize * bpp); | |
101 | ||
102 | /* | |
103 | * Read the image data... | |
104 | */ | |
105 | ||
106 | if (depth == 8) | |
107 | { | |
108 | for (count = 0, y = 0, g = 0; y < img->ysize; y ++) | |
109 | { | |
110 | if (img->colorspace == CUPS_IMAGE_WHITE) | |
111 | ptr = out; | |
112 | else | |
113 | ptr = in; | |
114 | ||
115 | for (x = img->xsize; x > 0; x --, count --) | |
116 | { | |
117 | if (count == 0) | |
118 | { | |
119 | count = getc(fp); | |
120 | g = getc(fp); | |
121 | } | |
122 | ||
123 | *ptr++ = g; | |
124 | } | |
125 | ||
126 | if (img->colorspace != CUPS_IMAGE_WHITE) | |
127 | switch (img->colorspace) | |
128 | { | |
129 | default : | |
130 | cupsImageWhiteToRGB(in, out, img->xsize); | |
131 | break; | |
132 | case CUPS_IMAGE_BLACK : | |
133 | cupsImageWhiteToBlack(in, out, img->xsize); | |
134 | break; | |
135 | case CUPS_IMAGE_CMY : | |
136 | cupsImageWhiteToCMY(in, out, img->xsize); | |
137 | break; | |
138 | case CUPS_IMAGE_CMYK : | |
139 | cupsImageWhiteToCMYK(in, out, img->xsize); | |
140 | break; | |
141 | } | |
142 | ||
143 | if (lut) | |
144 | cupsImageLut(out, img->xsize * bpp, lut); | |
145 | ||
146 | _cupsImagePutRow(img, 0, y, img->xsize, out); | |
147 | } | |
148 | } | |
149 | else | |
150 | { | |
151 | for (count = 0, y = 0, r = 0, g = 0, b = 0; y < img->ysize; y ++) | |
152 | { | |
f301802f | 153 | ptr = in; |
ef416fc2 | 154 | |
155 | for (x = img->xsize; x > 0; x --, count --) | |
156 | { | |
157 | if (count == 0) | |
158 | { | |
159 | count = getc(fp); | |
160 | b = getc(fp); | |
161 | g = getc(fp); | |
162 | r = getc(fp); | |
163 | } | |
164 | ||
165 | *ptr++ = r; | |
166 | *ptr++ = g; | |
167 | *ptr++ = b; | |
168 | } | |
169 | ||
f301802f | 170 | if (saturation != 100 || hue != 0) |
171 | cupsImageRGBAdjust(in, img->xsize, saturation, hue); | |
ef416fc2 | 172 | |
f301802f | 173 | switch (img->colorspace) |
174 | { | |
175 | default : | |
176 | break; | |
177 | ||
178 | case CUPS_IMAGE_WHITE : | |
179 | cupsImageRGBToWhite(in, out, img->xsize); | |
180 | break; | |
181 | case CUPS_IMAGE_RGB : | |
182 | cupsImageRGBToWhite(in, out, img->xsize); | |
183 | break; | |
184 | case CUPS_IMAGE_BLACK : | |
185 | cupsImageRGBToBlack(in, out, img->xsize); | |
186 | break; | |
187 | case CUPS_IMAGE_CMY : | |
188 | cupsImageRGBToCMY(in, out, img->xsize); | |
189 | break; | |
190 | case CUPS_IMAGE_CMYK : | |
191 | cupsImageRGBToCMYK(in, out, img->xsize); | |
192 | break; | |
ef416fc2 | 193 | } |
194 | ||
195 | if (lut) | |
196 | cupsImageLut(out, img->xsize * bpp, lut); | |
197 | ||
198 | _cupsImagePutRow(img, 0, y, img->xsize, out); | |
199 | } | |
200 | } | |
201 | ||
202 | fclose(fp); | |
203 | free(in); | |
204 | free(out); | |
205 | ||
206 | return (0); | |
207 | } | |
208 | ||
209 | ||
210 | /* | |
211 | * 'read_short()' - Read a 16-bit integer. | |
212 | */ | |
213 | ||
214 | static short /* O - Value from file */ | |
215 | read_short(FILE *fp) /* I - File to read from */ | |
216 | { | |
217 | int ch; /* Character from file */ | |
218 | ||
219 | ||
220 | ch = getc(fp); | |
221 | return ((ch << 8) | getc(fp)); | |
222 | } | |
223 | ||
224 | ||
225 | /* | |
bc44d920 | 226 | * End of "$Id: image-pix.c 6649 2007-07-11 21:46:42Z mike $". |
ef416fc2 | 227 | */ |