diff options
Diffstat (limited to 'tiff/contrib/addtiffo/tif_ovrcache.c')
| -rw-r--r-- | tiff/contrib/addtiffo/tif_ovrcache.c | 341 |
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: - */ |