1 files changed, 93 insertions, 0 deletions
diff --git a/plug-ins/file-sgi/sgi-lib.h b/plug-ins/file-sgi/sgi-lib.h
new file mode 100644
index 0000000..e2fc44d
--- /dev/null
+++ b/plug-ins/file-sgi/sgi-lib.h
@@ -0,0 +1,93 @@
+/*
+ * 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 3 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, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SGI_LIB_H__
+#define __SGI_LIB_H__
+
+G_BEGIN_DECLS
+
+/*
+ * 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       /* Aggressive run-length encoding */
+
+
+/*
+ * Image structure...
+ */
+
+typedef struct
+{
+  FILE                  *file;          /* Image file */
+  int                   mode,           /* File open mode */
+                        bpp,            /* Bytes per pixel/channel */
+                        comp,           /* Compression */
+                        swapBytes;      /* SwapBytes flag */
+  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);
+
+G_END_DECLS
+
+#endif /* !__SGI_LIB_H__ */