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- /* $Header: /usr/people/sam/tiff/tools/RCS/rasterfile.h,v 1.1 1990/10/08 17:24:23 sam Rel $ */
-
- /*
- * Description of header for files containing raster images
- */
- struct rasterfile {
- int ras_magic; /* magic number */
- int ras_width; /* width (pixels) of image */
- int ras_height; /* height (pixels) of image */
- int ras_depth; /* depth (1, 8, or 24 bits) of pixel */
- int ras_length; /* length (bytes) of image */
- int ras_type; /* type of file; see RT_* below */
- int ras_maptype; /* type of colormap; see RMT_* below */
- int ras_maplength; /* length (bytes) of following map */
- /* color map follows for ras_maplength bytes, followed by image */
- };
- #define RAS_MAGIC 0x59a66a95
-
- /* Sun supported ras_type's */
- #define RT_OLD 0 /* Raw pixrect image in 68000 byte order */
- #define RT_STANDARD 1 /* Raw pixrect image in 68000 byte order */
- #define RT_BYTE_ENCODED 2 /* Run-length compression of bytes */
- #define RT_EXPERIMENTAL 0xffff /* Reserved for testing */
-
- /* Sun registered ras_maptype's */
- #define RMT_RAW 2
- /* Sun supported ras_maptype's */
- #define RMT_NONE 0 /* ras_maplength is expected to be 0 */
- #define RMT_EQUAL_RGB 1 /* red[ras_maplength/3],green[],blue[] */
-
- /*
- * NOTES:
- * Each line of the image is rounded out to a multiple of 16 bits.
- * This corresponds to the rounding convention used by the memory pixrect
- * package (/usr/include/pixrect/memvar.h) of the SunWindows system.
- * The ras_encoding field (always set to 0 by Sun's supported software)
- * was renamed to ras_length in release 2.0. As a result, rasterfiles
- * of type 0 generated by the old software claim to have 0 length; for
- * compatibility, code reading rasterfiles must be prepared to compute the
- * true length from the width, height, and depth fields.
- */
-