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root/radiance/ray/src/px/rasterfile.h
Revision: 3.2
Committed: Mon Jul 14 22:24:00 2003 UTC (20 years, 8 months ago) by schorsch
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R6P1, rad3R6
Changes since 3.1: +11 -4 lines
Log Message:
Instrumented headers against multiple inclusion and for use from C++.
Moved includes in headers out of "C" scope.

File Contents

# Content
1 /* RCSid: $Id: rasterfile.h,v 3.1 2003/02/22 02:07:28 greg Exp $ */
2 /* @(#)rasterfile.h 1.11 89/08/21 SMI */
3
4 /*
5 * Description of header for files containing raster images
6 */
7 #ifndef _RAD_RASTERFILE_H_
8 #define _RAD_RASTERFILE_H_
9
10 #ifdef __cplusplus
11 extern "C" {
12 #endif
13
14 struct rasterfile {
15 int ras_magic; /* magic number */
16 int ras_width; /* width (pixels) of image */
17 int ras_height; /* height (pixels) of image */
18 int ras_depth; /* depth (1, 8, or 24 bits) of pixel */
19 int ras_length; /* length (bytes) of image */
20 int ras_type; /* type of file; see RT_* below */
21 int ras_maptype; /* type of colormap; see RMT_* below */
22 int ras_maplength; /* length (bytes) of following map */
23 /* color map follows for ras_maplength bytes, followed by image */
24 };
25 #define RAS_MAGIC 0x59a66a95
26
27 /* Sun supported ras_type's */
28 #define RT_OLD 0 /* Raw pixrect image in 68000 byte order */
29 #define RT_STANDARD 1 /* Raw pixrect image in 68000 byte order */
30 #define RT_BYTE_ENCODED 2 /* Run-length compression of bytes */
31 #define RT_FORMAT_RGB 3 /* XRGB or RGB instead of XBGR or BGR */
32 #define RT_FORMAT_TIFF 4 /* tiff <-> standard rasterfile */
33 #define RT_FORMAT_IFF 5 /* iff (TAAC format) <-> standard rasterfile */
34 #define RT_EXPERIMENTAL 0xffff /* Reserved for testing */
35
36 /* Sun registered ras_maptype's */
37 #define RMT_RAW 2
38 /* Sun supported ras_maptype's */
39 #define RMT_NONE 0 /* ras_maplength is expected to be 0 */
40 #define RMT_EQUAL_RGB 1 /* red[ras_maplength/3],green[],blue[] */
41
42 /*
43 * NOTES:
44 * Each line of the image is rounded out to a multiple of 16 bits.
45 * This corresponds to the rounding convention used by the memory pixrect
46 * package (/usr/include/pixrect/memvar.h) of the SunWindows system.
47 * The ras_encoding field (always set to 0 by Sun's supported software)
48 * was renamed to ras_length in release 2.0. As a result, rasterfiles
49 * of type 0 generated by the old software claim to have 0 length; for
50 * compatibility, code reading rasterfiles must be prepared to compute the
51 * true length from the width, height, and depth fields.
52 */
53
54 #ifdef __cplusplus
55 }
56 #endif
57 #endif /* _RAD_RASTERFILE_H_ */
58