1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
|
/*
* "$Id$"
*
* SGI image file routines for CUPS.
*
* Copyright 2007-2011 by Apple Inc.
* Copyright 1993-2007 by Easy Software Products.
*
* These coded instructions, statements, and computer programs are the
* property of Apple Inc. and are protected by Federal copyright
* law. Distribution and use rights are outlined in the file "LICENSE.txt"
* which should have been included with this file. If this file is
* file is missing or damaged, see the license at "http://www.cups.org/".
*
* This file is subject to the Apple OS-Developed Software exception.
*
* Contents:
*
* _cupsImageReadSGI() - Read a SGI image file.
*/
/*
* Include necessary headers...
*/
#include "image-private.h"
#include "image-sgi.h"
/*
* '_cupsImageReadSGI()' - Read a SGI image file.
*/
int /* O - Read status */
_cupsImageReadSGI(
cups_image_t *img, /* IO - cupsImage */
FILE *fp, /* I - cupsImage file */
cups_icspace_t primary, /* I - Primary choice for colorspace */
cups_icspace_t secondary, /* I - Secondary choice for colorspace */
int saturation, /* I - Color saturation (%) */
int hue, /* I - Color hue (degrees) */
const cups_ib_t *lut) /* I - Lookup table for gamma/brightness */
{
int i, y; /* Looping vars */
int bpp; /* Bytes per pixel */
sgi_t *sgip; /* SGI image file */
cups_ib_t *in, /* Input pixels */
*inptr, /* Current input pixel */
*out; /* Output pixels */
unsigned short *rows[4], /* Row pointers for image data */
*red,
*green,
*blue,
*gray,
*alpha;
/*
* Setup the SGI file...
*/
sgip = sgiOpenFile(fp, SGI_READ, 0, 0, 0, 0, 0);
/*
* Get the image dimensions and load the output image...
*/
/*
* Check the image dimensions; since xsize and ysize are unsigned shorts,
* just check if they are 0 since they can't exceed CUPS_IMAGE_MAX_WIDTH or
* CUPS_IMAGE_MAX_HEIGHT...
*/
if (sgip->xsize == 0 || sgip->ysize == 0 ||
sgip->zsize == 0 || sgip->zsize > 4)
{
fprintf(stderr, "DEBUG: Bad SGI image dimensions %ux%ux%u!\n",
sgip->xsize, sgip->ysize, sgip->zsize);
sgiClose(sgip);
return (1);
}
if (sgip->zsize < 3)
img->colorspace = secondary;
else
img->colorspace = (primary == CUPS_IMAGE_RGB_CMYK) ? CUPS_IMAGE_RGB : primary;
img->xsize = sgip->xsize;
img->ysize = sgip->ysize;
cupsImageSetMaxTiles(img, 0);
bpp = cupsImageGetDepth(img);
if ((in = malloc(img->xsize * sgip->zsize)) == NULL)
{
fputs("DEBUG: Unable to allocate memory!\n", stderr);
sgiClose(sgip);
return (1);
}
if ((out = malloc(img->xsize * bpp)) == NULL)
{
fputs("DEBUG: Unable to allocate memory!\n", stderr);
sgiClose(sgip);
free(in);
return (1);
}
if ((rows[0] = calloc(img->xsize * sgip->zsize,
sizeof(unsigned short))) == NULL)
{
fputs("DEBUG: Unable to allocate memory!\n", stderr);
sgiClose(sgip);
free(in);
free(out);
return (1);
}
for (i = 1; i < sgip->zsize; i ++)
rows[i] = rows[0] + i * img->xsize;
/*
* Read the SGI image file...
*/
for (y = 0; y < img->ysize; y ++)
{
for (i = 0; i < sgip->zsize; i ++)
sgiGetRow(sgip, rows[i], img->ysize - 1 - y, i);
switch (sgip->zsize)
{
case 1 :
if (sgip->bpp == 1)
for (i = img->xsize - 1, gray = rows[0], inptr = in;
i >= 0;
i --)
{
*inptr++ = *gray++;
}
else
for (i = img->xsize - 1, gray = rows[0], inptr = in;
i >= 0;
i --)
{
*inptr++ = (*gray++) / 256 + 128;
}
break;
case 2 :
if (sgip->bpp == 1)
for (i = img->xsize - 1, gray = rows[0], alpha = rows[1], inptr = in;
i >= 0;
i --)
{
*inptr++ = (*gray++) * (*alpha++) / 255;
}
else
for (i = img->xsize - 1, gray = rows[0], alpha = rows[1], inptr = in;
i >= 0;
i --)
{
*inptr++ = ((*gray++) / 256 + 128) * (*alpha++) / 32767;
}
break;
case 3 :
if (sgip->bpp == 1)
for (i = img->xsize - 1, red = rows[0], green = rows[1],
blue = rows[2], inptr = in;
i >= 0;
i --)
{
*inptr++ = *red++;
*inptr++ = *green++;
*inptr++ = *blue++;
}
else
for (i = img->xsize - 1, red = rows[0], green = rows[1],
blue = rows[2], inptr = in;
i >= 0;
i --)
{
*inptr++ = (*red++) / 256 + 128;
*inptr++ = (*green++) / 256 + 128;
*inptr++ = (*blue++) / 256 + 128;
}
break;
case 4 :
if (sgip->bpp == 1)
for (i = img->xsize - 1, red = rows[0], green = rows[1],
blue = rows[2], alpha = rows[3], inptr = in;
i >= 0;
i --)
{
*inptr++ = (*red++) * (*alpha) / 255;
*inptr++ = (*green++) * (*alpha) / 255;
*inptr++ = (*blue++) * (*alpha++) / 255;
}
else
for (i = img->xsize - 1, red = rows[0], green = rows[1],
blue = rows[2], alpha = rows[3], inptr = in;
i >= 0;
i --)
{
*inptr++ = ((*red++) / 256 + 128) * (*alpha) / 32767;
*inptr++ = ((*green++) / 256 + 128) * (*alpha) / 32767;
*inptr++ = ((*blue++) / 256 + 128) * (*alpha++) / 32767;
}
break;
}
if (sgip->zsize < 3)
{
if (img->colorspace == CUPS_IMAGE_WHITE)
{
if (lut)
cupsImageLut(in, img->xsize, lut);
_cupsImagePutRow(img, 0, y, img->xsize, in);
}
else
{
switch (img->colorspace)
{
default :
break;
case CUPS_IMAGE_RGB :
case CUPS_IMAGE_RGB_CMYK :
cupsImageWhiteToRGB(in, out, img->xsize);
break;
case CUPS_IMAGE_BLACK :
cupsImageWhiteToBlack(in, out, img->xsize);
break;
case CUPS_IMAGE_CMY :
cupsImageWhiteToCMY(in, out, img->xsize);
break;
case CUPS_IMAGE_CMYK :
cupsImageWhiteToCMYK(in, out, img->xsize);
break;
}
if (lut)
cupsImageLut(out, img->xsize * bpp, lut);
_cupsImagePutRow(img, 0, y, img->xsize, out);
}
}
else
{
if ((saturation != 100 || hue != 0) && bpp > 1)
cupsImageRGBAdjust(in, img->xsize, saturation, hue);
switch (img->colorspace)
{
default :
break;
case CUPS_IMAGE_WHITE :
cupsImageRGBToWhite(in, out, img->xsize);
break;
case CUPS_IMAGE_RGB :
cupsImageRGBToRGB(in, out, img->xsize);
break;
case CUPS_IMAGE_BLACK :
cupsImageRGBToBlack(in, out, img->xsize);
break;
case CUPS_IMAGE_CMY :
cupsImageRGBToCMY(in, out, img->xsize);
break;
case CUPS_IMAGE_CMYK :
cupsImageRGBToCMYK(in, out, img->xsize);
break;
}
if (lut)
cupsImageLut(out, img->xsize * bpp, lut);
_cupsImagePutRow(img, 0, y, img->xsize, out);
}
}
free(in);
free(out);
free(rows[0]);
sgiClose(sgip);
return (0);
}
/*
* End of "$Id$".
*/
|
