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authorJörg Frings-Fürst <debian@jff-webhosting.net>2015-08-23 12:17:05 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2015-08-23 12:17:05 +0200
commitc0b89ac5bfb90835ef01573267020e42d4fe070c (patch)
tree733c16852d964d84b7565af4bdaff0bcca901b88 /tiff/contrib/addtiffo/tif_ovrcache.c
parent094535c010320967639e8e86f974d878e80baa72 (diff)
Imported Upstream version 1.8.0upstream/1.8.0
Diffstat (limited to 'tiff/contrib/addtiffo/tif_ovrcache.c')
-rw-r--r--tiff/contrib/addtiffo/tif_ovrcache.c341
1 files changed, 0 insertions, 341 deletions
diff --git a/tiff/contrib/addtiffo/tif_ovrcache.c b/tiff/contrib/addtiffo/tif_ovrcache.c
deleted file mode 100644
index 646b534..0000000
--- a/tiff/contrib/addtiffo/tif_ovrcache.c
+++ /dev/null
@@ -1,341 +0,0 @@
-/******************************************************************************
- * $Id: tif_ovrcache.c,v 1.7.2.1 2010-06-08 18:50:40 bfriesen 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
- *
- ******************************************************************************
- * 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.
- ******************************************************************************
- */
-
-#include "tiffiop.h"
-#include "tif_ovrcache.h"
-#include <assert.h>
-
-/************************************************************************/
-/* TIFFCreateOvrCache() */
-/* */
-/* Create an overview cache to hold two rows of blocks from an */
-/* existing TIFF directory. */
-/************************************************************************/
-
-TIFFOvrCache *TIFFCreateOvrCache( TIFF *hTIFF, int nDirOffset )
-
-{
- TIFFOvrCache *psCache;
- uint32 nBaseDirOffset;
-
- psCache = (TIFFOvrCache *) _TIFFmalloc(sizeof(TIFFOvrCache));
- psCache->nDirOffset = nDirOffset;
- psCache->hTIFF = hTIFF;
-
-/* -------------------------------------------------------------------- */
-/* Get definition of this raster from the TIFF file itself. */
-/* -------------------------------------------------------------------- */
- nBaseDirOffset = TIFFCurrentDirOffset( psCache->hTIFF );
- TIFFSetSubDirectory( hTIFF, nDirOffset );
-
- TIFFGetField( hTIFF, TIFFTAG_IMAGEWIDTH, &(psCache->nXSize) );
- TIFFGetField( hTIFF, TIFFTAG_IMAGELENGTH, &(psCache->nYSize) );
-
- TIFFGetField( hTIFF, TIFFTAG_BITSPERSAMPLE, &(psCache->nBitsPerPixel) );
- TIFFGetField( hTIFF, TIFFTAG_SAMPLESPERPIXEL, &(psCache->nSamples) );
- TIFFGetField( hTIFF, TIFFTAG_PLANARCONFIG, &(psCache->nPlanarConfig) );
-
- if( !TIFFIsTiled( hTIFF ) )
- {
- TIFFGetField( hTIFF, TIFFTAG_ROWSPERSTRIP, &(psCache->nBlockYSize) );
- psCache->nBlockXSize = psCache->nXSize;
- psCache->nBytesPerBlock = TIFFStripSize(hTIFF);
- psCache->bTiled = FALSE;
- }
- else
- {
- TIFFGetField( hTIFF, TIFFTAG_TILEWIDTH, &(psCache->nBlockXSize) );
- TIFFGetField( hTIFF, TIFFTAG_TILELENGTH, &(psCache->nBlockYSize) );
- psCache->nBytesPerBlock = TIFFTileSize(hTIFF);
- psCache->bTiled = TRUE;
- }
-
-/* -------------------------------------------------------------------- */
-/* Compute some values from this. */
-/* -------------------------------------------------------------------- */
-
- psCache->nBlocksPerRow = (psCache->nXSize + psCache->nBlockXSize - 1)
- / psCache->nBlockXSize;
- psCache->nBlocksPerColumn = (psCache->nYSize + psCache->nBlockYSize - 1)
- / psCache->nBlockYSize;
-
- if (psCache->nPlanarConfig == PLANARCONFIG_SEPARATE)
- psCache->nBytesPerRow = psCache->nBytesPerBlock
- * psCache->nBlocksPerRow * psCache->nSamples;
- else
- psCache->nBytesPerRow =
- psCache->nBytesPerBlock * psCache->nBlocksPerRow;
-
-
-/* -------------------------------------------------------------------- */
-/* Allocate and initialize the data buffers. */
-/* -------------------------------------------------------------------- */
-
- psCache->pabyRow1Blocks =
- (unsigned char *) _TIFFmalloc(psCache->nBytesPerRow);
- psCache->pabyRow2Blocks =
- (unsigned char *) _TIFFmalloc(psCache->nBytesPerRow);
-
- if( psCache->pabyRow1Blocks == NULL
- || psCache->pabyRow2Blocks == NULL )
- {
- TIFFErrorExt( hTIFF->tif_clientdata, hTIFF->tif_name,
- "Can't allocate memory for overview cache." );
- /* TODO: use of TIFFError is inconsistent with use of fprintf in addtiffo.c, sort out */
- return NULL;
- }
-
- _TIFFmemset( psCache->pabyRow1Blocks, 0, psCache->nBytesPerRow );
- _TIFFmemset( psCache->pabyRow2Blocks, 0, psCache->nBytesPerRow );
-
- psCache->nBlockOffset = 0;
-
- TIFFSetSubDirectory( psCache->hTIFF, nBaseDirOffset );
-
- return psCache;
-}
-
-/************************************************************************/
-/* TIFFWriteOvrRow() */
-/* */
-/* Write one entire row of blocks (row 1) to the tiff file, and */
-/* then rotate the block buffers, essentially moving things */
-/* down by one block. */
-/************************************************************************/
-
-static void TIFFWriteOvrRow( TIFFOvrCache * psCache )
-
-{
- int nRet, iTileX, iTileY = psCache->nBlockOffset;
- unsigned char *pabyData;
- uint32 nBaseDirOffset;
- uint32 RowsInStrip;
-
-/* -------------------------------------------------------------------- */
-/* If the output cache is multi-byte per sample, and the file */
-/* being written to is of a different byte order than the current */
-/* platform, we will need to byte swap the data. */
-/* -------------------------------------------------------------------- */
- if( TIFFIsByteSwapped(psCache->hTIFF) )
- {
- if( psCache->nBitsPerPixel == 16 )
- TIFFSwabArrayOfShort( (uint16 *) psCache->pabyRow1Blocks,
- (psCache->nBytesPerBlock * psCache->nSamples) / 2 );
-
- else if( psCache->nBitsPerPixel == 32 )
- TIFFSwabArrayOfLong( (uint32 *) psCache->pabyRow1Blocks,
- (psCache->nBytesPerBlock * psCache->nSamples) / 4 );
-
- else if( psCache->nBitsPerPixel == 64 )
- TIFFSwabArrayOfDouble( (double *) psCache->pabyRow1Blocks,
- (psCache->nBytesPerBlock * psCache->nSamples) / 8 );
- }
-
-/* -------------------------------------------------------------------- */
-/* Record original directory position, so we can restore it at */
-/* end. */
-/* -------------------------------------------------------------------- */
- nBaseDirOffset = TIFFCurrentDirOffset( psCache->hTIFF );
- nRet = TIFFSetSubDirectory( psCache->hTIFF, psCache->nDirOffset );
- assert( nRet == 1 );
-
-/* -------------------------------------------------------------------- */
-/* Write blocks to TIFF file. */
-/* -------------------------------------------------------------------- */
- for( iTileX = 0; iTileX < psCache->nBlocksPerRow; iTileX++ )
- {
- int nTileID;
-
- if (psCache->nPlanarConfig == PLANARCONFIG_SEPARATE)
- {
- int iSample;
-
- for( iSample = 0; iSample < psCache->nSamples; iSample++ )
- {
- pabyData = TIFFGetOvrBlock( psCache, iTileX, iTileY, iSample );
-
- if( psCache->bTiled )
- {
- nTileID = TIFFComputeTile( psCache->hTIFF,
- iTileX * psCache->nBlockXSize,
- iTileY * psCache->nBlockYSize,
- 0, (tsample_t) iSample );
- TIFFWriteEncodedTile( psCache->hTIFF, nTileID,
- pabyData,
- TIFFTileSize(psCache->hTIFF) );
- }
- else
- {
- nTileID = TIFFComputeStrip( psCache->hTIFF,
- iTileY * psCache->nBlockYSize,
- (tsample_t) iSample );
- RowsInStrip=psCache->nBlockYSize;
- if ((iTileY+1)*psCache->nBlockYSize>psCache->nYSize)
- RowsInStrip=psCache->nYSize-iTileY*psCache->nBlockYSize;
- TIFFWriteEncodedStrip( psCache->hTIFF, nTileID,
- pabyData,
- TIFFVStripSize(psCache->hTIFF,RowsInStrip) );
- }
- }
-
- }
- else
- {
- pabyData = TIFFGetOvrBlock( psCache, iTileX, iTileY, 0 );
-
- if( psCache->bTiled )
- {
- nTileID = TIFFComputeTile( psCache->hTIFF,
- iTileX * psCache->nBlockXSize,
- iTileY * psCache->nBlockYSize,
- 0, 0 );
- TIFFWriteEncodedTile( psCache->hTIFF, nTileID,
- pabyData,
- TIFFTileSize(psCache->hTIFF) );
- }
- else
- {
- nTileID = TIFFComputeStrip( psCache->hTIFF,
- iTileY * psCache->nBlockYSize,
- 0 );
- RowsInStrip=psCache->nBlockYSize;
- if ((iTileY+1)*psCache->nBlockYSize>psCache->nYSize)
- RowsInStrip=psCache->nYSize-iTileY*psCache->nBlockYSize;
- TIFFWriteEncodedStrip( psCache->hTIFF, nTileID,
- pabyData,
- TIFFVStripSize(psCache->hTIFF,RowsInStrip) );
- }
- }
- }
- /* TODO: add checks on error status return of TIFFWriteEncodedTile and TIFFWriteEncodedStrip */
-
-/* -------------------------------------------------------------------- */
-/* Rotate buffers. */
-/* -------------------------------------------------------------------- */
- pabyData = psCache->pabyRow1Blocks;
- psCache->pabyRow1Blocks = psCache->pabyRow2Blocks;
- psCache->pabyRow2Blocks = pabyData;
-
- _TIFFmemset( pabyData, 0, psCache->nBytesPerRow );
-
- psCache->nBlockOffset++;
-
-/* -------------------------------------------------------------------- */
-/* Restore access to original directory. */
-/* -------------------------------------------------------------------- */
- TIFFFlush( psCache->hTIFF );
- /* TODO: add checks on error status return of TIFFFlush */
- TIFFSetSubDirectory( psCache->hTIFF, nBaseDirOffset );
- /* TODO: add checks on error status return of TIFFSetSubDirectory */
-}
-
-/************************************************************************/
-/* TIFFGetOvrBlock() */
-/************************************************************************/
-
-/* TODO: make TIFF_Downsample handle iSample offset, so that we can
- * do with a single TIFFGetOvrBlock and no longer need TIFFGetOvrBlock_Subsampled */
-unsigned char *TIFFGetOvrBlock( TIFFOvrCache *psCache, int iTileX, int iTileY,
- int iSample )
-
-{
- int nRowOffset;
-
- if( iTileY > psCache->nBlockOffset + 1 )
- TIFFWriteOvrRow( psCache );
-
- assert( iTileX >= 0 && iTileX < psCache->nBlocksPerRow );
- assert( iTileY >= 0 && iTileY < psCache->nBlocksPerColumn );
- assert( iTileY >= psCache->nBlockOffset
- && iTileY < psCache->nBlockOffset+2 );
- assert( iSample >= 0 && iSample < psCache->nSamples );
-
- if (psCache->nPlanarConfig == PLANARCONFIG_SEPARATE)
- nRowOffset = ((iTileX * psCache->nSamples) + iSample)
- * psCache->nBytesPerBlock;
- else
- nRowOffset = iTileX * psCache->nBytesPerBlock +
- (psCache->nBitsPerPixel + 7) / 8 * iSample;
-
- if( iTileY == psCache->nBlockOffset )
- return psCache->pabyRow1Blocks + nRowOffset;
- else
- return psCache->pabyRow2Blocks + nRowOffset;
-}
-
-/************************************************************************/
-/* TIFFGetOvrBlock_Subsampled() */
-/************************************************************************/
-
-unsigned char *TIFFGetOvrBlock_Subsampled( TIFFOvrCache *psCache,
- int iTileX, int iTileY )
-
-{
- int nRowOffset;
-
- if( iTileY > psCache->nBlockOffset + 1 )
- TIFFWriteOvrRow( psCache );
-
- assert( iTileX >= 0 && iTileX < psCache->nBlocksPerRow );
- assert( iTileY >= 0 && iTileY < psCache->nBlocksPerColumn );
- assert( iTileY >= psCache->nBlockOffset
- && iTileY < psCache->nBlockOffset+2 );
- assert( psCache->nPlanarConfig != PLANARCONFIG_SEPARATE );
-
- nRowOffset = iTileX * psCache->nBytesPerBlock;
-
- if( iTileY == psCache->nBlockOffset )
- return psCache->pabyRow1Blocks + nRowOffset;
- else
- return psCache->pabyRow2Blocks + nRowOffset;
-}
-
-/************************************************************************/
-/* TIFFDestroyOvrCache() */
-/************************************************************************/
-
-void TIFFDestroyOvrCache( TIFFOvrCache * psCache )
-
-{
- while( psCache->nBlockOffset < psCache->nBlocksPerColumn )
- TIFFWriteOvrRow( psCache );
-
- _TIFFfree( psCache->pabyRow1Blocks );
- _TIFFfree( psCache->pabyRow2Blocks );
- _TIFFfree( psCache );
-}
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 8
- * fill-column: 78
- * End:
- */