ras_cod.h
1 /*
2  * Copyright (c) 1999-2000 Image Power, Inc. and the University of
3  * British Columbia.
4  * Copyright (c) 2001-2002 Michael David Adams.
5  * All rights reserved.
6  */
7 
8 /* __START_OF_JASPER_LICENSE__
9  *
10  * JasPer License Version 2.0
11  *
12  * Copyright (c) 2001-2006 Michael David Adams
13  * Copyright (c) 1999-2000 Image Power, Inc.
14  * Copyright (c) 1999-2000 The University of British Columbia
15  *
16  * All rights reserved.
17  *
18  * Permission is hereby granted, free of charge, to any person (the
19  * "User") obtaining a copy of this software and associated documentation
20  * files (the "Software"), to deal in the Software without restriction,
21  * including without limitation the rights to use, copy, modify, merge,
22  * publish, distribute, and/or sell copies of the Software, and to permit
23  * persons to whom the Software is furnished to do so, subject to the
24  * following conditions:
25  *
26  * 1. The above copyright notices and this permission notice (which
27  * includes the disclaimer below) shall be included in all copies or
28  * substantial portions of the Software.
29  *
30  * 2. The name of a copyright holder shall not be used to endorse or
31  * promote products derived from the Software without specific prior
32  * written permission.
33  *
34  * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
35  * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
36  * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
37  * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
38  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
39  * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
40  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
41  * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
42  * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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47  * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
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52  * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
53  * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
54  * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
55  * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
56  * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
57  * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
58  * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
59  * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
60  *
61  * __END_OF_JASPER_LICENSE__
62  */
63 
64 /*
65  * Sun Rasterfile Library
66  *
67  * $Id$
68  */
69 
70 /******************************************************************************\
71 * Sun Rasterfile
72 \******************************************************************************/
73 
74 #ifndef RAS_COD_H
75 #define RAS_COD_H
76 
77 /******************************************************************************\
78 * Includes.
79 \******************************************************************************/
80 
81 #include "jasper/jas_types.h"
82 
83 /******************************************************************************\
84 * Constants.
85 \******************************************************************************/
86 
87 #define RAS_MAGIC 0x59a66a95
88 #define RAS_MAGICLEN 4
89 
90 #define RAS_TYPE_OLD 0
91 #define RAS_TYPE_STD 1
92 #define RAS_TYPE_RLE 2
93 
94 #define RAS_MT_NONE 0
95 #define RAS_MT_EQUALRGB 1
96 #define RAS_MT_RAW 2
97 
98 /******************************************************************************\
99 * Types.
100 \******************************************************************************/
101 
102 /* Sun Rasterfile header. */
103 typedef struct {
104 
105  int_fast32_t magic;
106  /* signature */
107 
108  int_fast32_t width;
109  /* width of image (in pixels) */
110 
111  int_fast32_t height;
112  /* height of image (in pixels) */
113 
114  int_fast32_t depth;
115  /* number of bits per pixel */
116 
117  int_fast32_t length;
118  /* length of image data (in bytes) */
119 
120  int_fast32_t type;
121  /* format of image data */
122 
123  int_fast32_t maptype;
124  /* colormap type */
125 
126  int_fast32_t maplength;
127  /* length of colormap data (in bytes) */
128 
129 } ras_hdr_t;
130 
131 #define RAS_CMAP_MAXSIZ 256
132 
133 /* Color map. */
134 typedef struct {
135 
136  int len;
137  /* The number of entries in the color map. */
138 
139  int data[RAS_CMAP_MAXSIZ];
140  /* The color map data. */
141 
142 } ras_cmap_t;
143 
144 /******************************************************************************\
145 * Macros.
146 \******************************************************************************/
147 
148 #define RAS_GETBLUE(x) (((x) >> 16) & 0xff)
149 #define RAS_GETGREEN(x) (((x) >> 8) & 0xff)
150 #define RAS_GETRED(x) ((x) & 0xff)
151 
152 #define RAS_BLUE(x) (((x) & 0xff) << 16)
153 #define RAS_GREEN(x) (((x) & 0xff) << 8)
154 #define RAS_RED(x) ((x) & 0xff)
155 
156 #define RAS_ROWSIZE(hdr) \
157  ((((hdr)->width * (hdr)->depth + 15) / 16) * 2)
158 #define RAS_ISRGB(hdr) \
159  ((hdr)->depth == 24 || (hdr)->depth == 32)
160 
161 #define RAS_ONES(n) \
162  (((n) == 32) ? 0xffffffffUL : ((1UL << (n)) - 1))
163 
164 #endif