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,
43 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
44 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
45 * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
46 * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
47 * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
48 * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
49 * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
50 * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
51 * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
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