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diff --git a/libtiff/tif_predict.h b/libtiff/tif_predict.h
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+/* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_predict.h,v 1.1 1999-07-27 21:50:27 mike Exp $ */
+
+/*
+ * Copyright (c) 1995-1997 Sam Leffler
+ * Copyright (c) 1995-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _TIFFPREDICT_
+#define	_TIFFPREDICT_
+/*
+ * ``Library-private'' Support for the Predictor Tag
+ */
+
+/*
+ * Codecs that want to support the Predictor tag must place
+ * this structure first in their private state block so that
+ * the predictor code can cast tif_data to find its state.
+ */
+typedef struct {
+	int	predictor;		/* predictor tag value */
+	int	stride;			/* sample stride over data */
+	tsize_t	rowsize;		/* tile/strip row size */
+
+	TIFFPostMethod	pfunc;		/* horizontal differencer/accumulator */
+	TIFFCodeMethod	coderow;	/* parent codec encode/decode row */
+	TIFFCodeMethod	codestrip;	/* parent codec encode/decode strip */
+	TIFFCodeMethod	codetile;	/* parent codec encode/decode tile */
+	TIFFVGetMethod	vgetparent;	/* super-class method */
+	TIFFVSetMethod	vsetparent;	/* super-class method */
+	TIFFPrintMethod	printdir;	/* super-class method */
+	TIFFBoolMethod	setupdecode;	/* super-class method */
+	TIFFBoolMethod	setupencode;	/* super-class method */
+} TIFFPredictorState;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+extern	int TIFFPredictorInit(TIFF*);
+#if defined(__cplusplus)
+}
+#endif
+#endif /* _TIFFPREDICT_ */