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- /*
- * "$Id: sgi.h,v 1.10 1999/06/29 06:15:15 yosh Exp $"
- *
- * SGI image file format library definitions.
- *
- * Copyright 1997-1998 Michael Sweet (mike@easysw.com)
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- * Revision History:
- *
- * see ChangeLog
- */
-
- #ifndef _SGI_H_
- # define _SGI_H_
-
- # include "config.h"
-
- # include <stdio.h>
- # include <stdlib.h>
- # ifdef HAVE_UNISTD_H
- # include <unistd.h>
- # endif
- # 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(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: sgi.h,v 1.10 1999/06/29 06:15:15 yosh Exp $".
- */
-