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- /******************************************************************************
- * 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;
- toff_t nBytesPerBlock;
- toff_t nBytesPerRow;
- int nBlocksPerRow;
- int nBlocksPerColumn;
- int nBlockOffset; /* what block is the first in papabyBlocks? */
- unsigned char *pabyRow1Blocks;
- unsigned char *pabyRow2Blocks;
- toff_t nDirOffset;
- TIFF *hTIFF;
- int bTiled;
-
- } TIFFOvrCache;
- TIFFOvrCache *TIFFCreateOvrCache( TIFF *hTIFF, toff_t 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 *, int, int, int, int, int, int *, int,
- int, TIFFOvrCache **, uint32, uint32,
- unsigned char *, uint32, uint32,
- int, const char * );
- uint32 TIFF_WriteOverview( TIFF *, uint32, uint32, 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:
- */
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