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/* sunraster.h
*
* this describes the header for Sun rasterfiles. if you have SunOS, a
* better description is in /usr/include/rasterfile.h. this is used
* instead to improve portability and to avoid distribution problems.
*
* Copyright 1989 Jim Frost. See included file "copyright.h" for complete
* copyright information.
*/
#include "copyright.h"
struct rheader {
unsigned char magic[4]; /* magic number */
unsigned char width[4]; /* width of image in pixels */
unsigned char height[4]; /* height of image in pixels */
unsigned char depth[4]; /* depth of each pixel */
unsigned char length[4]; /* length of the image in bytes */
unsigned char type[4]; /* format of file */
unsigned char maptype[4]; /* type of colormap */
unsigned char maplen[4]; /* length of colormap in bytes */
};
/* following the header is the colormap (unless maplen is zero) then
* the image. each row of the image is rounded to 2 bytes.
*/
#define RMAGICNUMBER 0x59a66a95 /* magic number of this file type */
/* these are the possible file formats
*/
#define ROLD 0 /* old format, see /usr/include/rasterfile.h */
#define RSTANDARD 1 /* standard format */
#define RRLENCODED 2 /* run length encoding to compress the image */
#define RRGB 3 /* RGB-format instead of BGR in 24 or 32-bit mode */
#define RTIFF 4 /* TIFF <-> rasterfile */
#define RIFF 5 /* IFF (TAAC) <-> rasterfile */
/* these are the possible colormap types. if it's in RGB format,
* the map is made up of three byte arrays (red, green, then blue)
* that are each 1/3 of the colormap length.
*/
#define RNOMAP 0 /* no colormap follows the header */
#define RRGBMAP 1 /* rgb colormap */
#define RRAWMAP 2 /* raw colormap; good luck */
#define RESC 128 /* run-length encoding escape character */
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