1 files changed, 108 insertions, 0 deletions
diff --git a/contrib/addtiffo/rawblockedimage.h b/contrib/addtiffo/rawblockedimage.h
new file mode 100644
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+++ b/contrib/addtiffo/rawblockedimage.h
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+/******************************************************************************
+ * $Id: rawblockedimage.h,v 1.1 1999/08/17 01:47:59 warmerda Exp $
+ *
+ * Project:  GeoTIFF Overview Builder
+ * Purpose:  Implement the RawBlockedImage class, for holding ``under
+ *           construction'' overviews in a temporary file. 
+ * Author:   Frank Warmerdam, warmerda@home.com
+ *
+ ******************************************************************************
+ * Copyright (c) 1999, Frank Warmerdam
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ ******************************************************************************
+ *
+ * $Log: 
+ */
+
+#ifndef RAWBLOCKEDIMAGE_H_INCLUDED
+#define RAWBLOCKEDIMAGE_H_INCLUDED
+
+#include <stdio.h>
+
+/************************************************************************/
+/* ==================================================================== */
+/*			RawBlockedImage					*/
+/*									*/
+/*	The RawBlockedImage class is used to maintain a single band	*/
+/*	raster tiled image on disk. 					*/
+/* ==================================================================== */
+/************************************************************************/
+
+class RawBlock
+{
+public:
+    RawBlock	*poNextLRU;
+    RawBlock	*poPrevLRU;
+    
+    int		nDirty;
+    int		nPositionInFile;
+
+    unsigned char *pabyData;
+};
+
+class RawBlockedImage
+{
+    int		nXSize;
+    int		nYSize;
+
+    int		nBlockXSize;
+    int		nBlockYSize;
+    int		nBitsPerPixel;
+    int		nBytesPerBlock;
+
+    int		nBlocksPerRow;
+    int		nBlocksPerColumn;
+
+    int		nBlocks;
+    RawBlock	**papoBlocks;
+
+    int		nBlocksInCache;
+    int		nMaxBlocksInCache;
+
+    FILE	*fp;
+    int		nCurFileSize;
+    char	*pszFilename;
+
+    RawBlock	*GetRawBlock( int, int );
+    void	FlushBlock( RawBlock * );
+    void	InsertInLRUList( RawBlock * );
+    void	RemoveFromLRUList( RawBlock * );
+
+    RawBlock	*poLRUHead;
+    RawBlock	*poLRUTail;
+    
+public:
+    		RawBlockedImage( int nXSize, int nYSize,
+                                 int nBlockXSize, int nBlockYSize,
+                                 int nBitsPerPixel );
+
+    		~RawBlockedImage();
+
+    unsigned char*GetTile( int, int );
+    unsigned char*GetTileForUpdate( int, int );
+
+    int		GetBlockXSize() { return nBlockXSize; }
+    int		GetBlockYSize() { return nBlockYSize; }
+    int		GetXSize() { return nXSize; }
+    int		GetYSize() { return nYSize; }
+    int		GetBitsPerPixel() { return nBitsPerPixel; }
+};
+
+#endif /* ndef RAWBLOCKEDIMAGE_H_INCLUDED */