/* * "$Id: image-sgi.h 6649 2007-07-11 21:46:42Z mike $" * * SGI image file format library definitions for CUPS. * * Copyright 2007-2011 by Apple Inc. * Copyright 1993-2005 by Easy Software Products. * * These coded instructions, statements, and computer programs are the * property of Apple Inc. and are protected by Federal copyright * law. Distribution and use rights are outlined in the file "LICENSE.txt" * which should have been included with this file. If this file is * file is missing or damaged, see the license at "http://www.cups.org/". * * This file is subject to the Apple OS-Developed Software exception. */ #ifndef _SGI_H_ # define _SGI_H_ # include <stdio.h> # include <stdlib.h> # include <string.h> # ifdef __cplusplus extern "C" { # endif /* * Constants... */ # define SGI_MAGIC 474 /* Magic number in image file */ # define SGI_READ 0 /* Read from an SGI image file */ # define SGI_WRITE 1 /* Write to an SGI image file */ # define SGI_COMP_NONE 0 /* No compression */ # define SGI_COMP_RLE 1 /* Run-length encoding */ # define SGI_COMP_ARLE 2 /* Agressive run-length encoding */ /* * Image structure... */ typedef struct { FILE *file; /* Image file */ int mode, /* File open mode */ bpp, /* Bytes per pixel/channel */ comp; /* Compression */ unsigned short xsize, /* Width in pixels */ ysize, /* Height in pixels */ zsize; /* Number of channels */ long firstrow, /* File offset for first row */ nextrow, /* File offset for next row */ **table, /* Offset table for compression */ **length; /* Length table for compression */ unsigned short *arle_row; /* Advanced RLE compression buffer */ long arle_offset, /* Advanced RLE buffer offset */ arle_length; /* Advanced RLE buffer length */ } sgi_t; /* * Prototypes... */ extern int sgiClose(sgi_t *sgip); extern int sgiGetRow(sgi_t *sgip, unsigned short *row, int y, int z); extern sgi_t *sgiOpen(const char *filename, int mode, int comp, int bpp, int xsize, int ysize, int zsize); extern sgi_t *sgiOpenFile(FILE *file, int mode, int comp, int bpp, int xsize, int ysize, int zsize); extern int sgiPutRow(sgi_t *sgip, unsigned short *row, int y, int z); # ifdef __cplusplus } # endif #endif /* !_SGI_H_ */ /* * End of "$Id: image-sgi.h 6649 2007-07-11 21:46:42Z mike $". */