1 files changed, 108 insertions, 0 deletions
diff --git a/tiff/contrib/addtiffo/tif_ovrcache.h b/tiff/contrib/addtiffo/tif_ovrcache.h
new file mode 100644
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+++ b/tiff/contrib/addtiffo/tif_ovrcache.h
@@ -0,0 +1,108 @@
+/******************************************************************************
+ * tif_ovrcache.h,v 1.3 2005/05/25 09:03:16 dron Exp
+ *
+ * Project:  TIFF Overview Builder
+ * Purpose:  Library functions to maintain two rows of tiles or two strips
+ *           of data for output overviews as an output cache. 
+ * Author:   Frank Warmerdam, warmerdam@pobox.com
+ *
+ * This code could potentially be used by other applications wanting to
+ * manage a once-through write cache. 
+ *
+ ******************************************************************************
+ * Copyright (c) 2000, 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.
+ ******************************************************************************
+ */
+
+#ifndef TIF_OVRCACHE_H_INCLUDED
+#define TIF_OVRCACHE_H_INCLUDED
+
+#include "tiffio.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+    
+typedef struct 
+{
+    uint32	nXSize;
+    uint32	nYSize;
+
+    uint16	nBitsPerPixel;
+    uint16	nSamples;
+    uint16      nPlanarConfig;
+    uint32	nBlockXSize;
+    uint32	nBlockYSize;
+    uint32	nBytesPerBlock;
+    uint32      nBytesPerRow;
+
+    int		nBlocksPerRow;
+    int		nBlocksPerColumn;
+
+    int	        nBlockOffset; /* what block is the first in papabyBlocks? */
+    unsigned char *pabyRow1Blocks;
+    unsigned char *pabyRow2Blocks;
+
+    int		nDirOffset;
+    TIFF	*hTIFF;
+    int		bTiled;
+    
+} TIFFOvrCache;
+
+TIFFOvrCache *TIFFCreateOvrCache( TIFF *hTIFF, int nDirOffset );
+unsigned char *TIFFGetOvrBlock( TIFFOvrCache *psCache, int iTileX, int iTileY,
+                                int iSample );
+unsigned char *TIFFGetOvrBlock_Subsampled( TIFFOvrCache *psCache, int iTileX, int iTileY );
+void           TIFFDestroyOvrCache( TIFFOvrCache * );
+
+void TIFFBuildOverviews( TIFF *, int, int *, int, const char *,
+                         int (*)(double,void*), void * );
+
+void TIFF_ProcessFullResBlock( TIFF *hTIFF, int nPlanarConfig,
+                               int bSubsampled, int nHorSamples, int nVerSamples,
+                               int nOverviews, int * panOvList,
+                               int nBitsPerPixel, 
+                               int nSamples, TIFFOvrCache ** papoRawBIs,
+                               int nSXOff, int nSYOff,
+                               unsigned char *pabySrcTile,
+                               int nBlockXSize, int nBlockYSize,
+                               int nSampleFormat, const char * pszResampling );
+
+uint32 TIFF_WriteOverview( TIFF *, int, int, int, int, int, int, int,
+                           int, int, int, int, unsigned short *,
+                           unsigned short *, unsigned short *, int,
+                           int, int);
+
+
+
+#if defined(__cplusplus)
+}
+#endif
+    
+#endif /* ndef TIF_OVRCACHE_H_INCLUDED */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */