diff options
Diffstat (limited to 'goodies/source/filter.vcl/egif/giflzwc.cxx')
| -rw-r--r-- | goodies/source/filter.vcl/egif/giflzwc.cxx | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/goodies/source/filter.vcl/egif/giflzwc.cxx b/goodies/source/filter.vcl/egif/giflzwc.cxx deleted file mode 100644 index a542cff8b7fa..000000000000 --- a/goodies/source/filter.vcl/egif/giflzwc.cxx +++ /dev/null @@ -1,259 +0,0 @@ -/************************************************************************* - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * Copyright 2008 by Sun Microsystems, Inc. - * - * OpenOffice.org - a multi-platform office productivity suite - * - * $RCSfile: giflzwc.cxx,v $ - * $Revision: 1.5 $ - * - * This file is part of OpenOffice.org. - * - * OpenOffice.org is free software: you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License version 3 - * only, as published by the Free Software Foundation. - * - * OpenOffice.org is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License version 3 for more details - * (a copy is included in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU Lesser General Public License - * version 3 along with OpenOffice.org. If not, see - * <http://www.openoffice.org/license.html> - * for a copy of the LGPLv3 License. - * - ************************************************************************/ - -// MARKER(update_precomp.py): autogen include statement, do not remove -#include "precompiled_goodies.hxx" - -#include <tools/stream.hxx> -#include "giflzwc.hxx" - -// ---------------------------- -// - GIFImageDataOutputStream - -// ---------------------------- - -class GIFImageDataOutputStream -{ -private: - - void FlushBlockBuf(); - inline void FlushBitsBufsFullBytes(); - - SvStream& rStream; - BYTE* pBlockBuf; - BYTE nBlockBufSize; - ULONG nBitsBuf; - USHORT nBitsBufSize; - -public: - - GIFImageDataOutputStream( SvStream & rGIF, BYTE nLZWDataSize ); - ~GIFImageDataOutputStream(); - - inline void WriteBits( USHORT nCode, USHORT nCodeLen ); -}; - -// ------------------------------------------------------------------------ - -inline void GIFImageDataOutputStream::FlushBitsBufsFullBytes() -{ - while (nBitsBufSize>=8) - { - if( nBlockBufSize==255 ) - FlushBlockBuf(); - - pBlockBuf[nBlockBufSize++] = (BYTE) nBitsBuf; - nBitsBuf >>= 8; - nBitsBufSize -= 8; - } -} - -// ------------------------------------------------------------------------ - -inline void GIFImageDataOutputStream::WriteBits( USHORT nCode, USHORT nCodeLen ) -{ - if( nBitsBufSize+nCodeLen>32 ) - FlushBitsBufsFullBytes(); - - nBitsBuf |= (ULONG) nCode << nBitsBufSize; - nBitsBufSize = nBitsBufSize + nCodeLen; -} - -// ------------------------------------------------------------------------ - -GIFImageDataOutputStream::GIFImageDataOutputStream( SvStream & rGIF, BYTE nLZWDataSize ) : - rStream(rGIF) -{ - pBlockBuf = new BYTE[ 255 ]; - nBlockBufSize = 0; - nBitsBufSize = 0; - nBitsBuf = 0; - rStream << nLZWDataSize; -} - -// ------------------------------------------------------------------------ - - -GIFImageDataOutputStream::~GIFImageDataOutputStream() -{ - WriteBits(0,7); - FlushBitsBufsFullBytes(); - FlushBlockBuf(); - rStream << (BYTE)0; - delete[] pBlockBuf; -} - -// ------------------------------------------------------------------------ - -void GIFImageDataOutputStream::FlushBlockBuf() -{ - if( nBlockBufSize ) - { - rStream << (BYTE) nBlockBufSize; - rStream.Write( pBlockBuf,nBlockBufSize ); - nBlockBufSize = 0; - } -} - -// ------------------- -// - GIFLZWCTreeNode - -// ------------------- - -struct GIFLZWCTreeNode -{ - - GIFLZWCTreeNode* pBrother; // naechster Knoten, der den selben Vater hat - GIFLZWCTreeNode* pFirstChild; // erster Sohn - USHORT nCode; // Der Code fuer den String von Pixelwerten, der sich ergibt, wenn - USHORT nValue; // Der Pixelwert -}; - -// -------------------- -// - GIFLZWCompressor - -// -------------------- - -GIFLZWCompressor::GIFLZWCompressor() -{ - pIDOS=NULL; -} - -// ------------------------------------------------------------------------ - -GIFLZWCompressor::~GIFLZWCompressor() -{ - if (pIDOS!=NULL) EndCompression(); -} - -// ------------------------------------------------------------------------ - -void GIFLZWCompressor::StartCompression( SvStream& rGIF, USHORT nPixelSize ) -{ - if( !pIDOS ) - { - USHORT i; - - nDataSize = nPixelSize; - - if( nDataSize < 2 ) - nDataSize=2; - - nClearCode=1<<nDataSize; - nEOICode=nClearCode+1; - nTableSize=nEOICode+1; - nCodeSize=nDataSize+1; - - pIDOS=new GIFImageDataOutputStream(rGIF,(BYTE)nDataSize); - pTable=new GIFLZWCTreeNode[4096]; - - for (i=0; i<4096; i++) - { - pTable[i].pBrother = pTable[i].pFirstChild = NULL; - pTable[i].nValue = (BYTE) ( pTable[i].nCode = i ); - } - - pPrefix = NULL; - pIDOS->WriteBits( nClearCode,nCodeSize ); - } -} - -// ------------------------------------------------------------------------ - -void GIFLZWCompressor::Compress( HPBYTE pSrc, ULONG nSize ) -{ - if( pIDOS ) - { - GIFLZWCTreeNode* p; - USHORT i; - BYTE nV; - - if( !pPrefix && nSize ) - { - pPrefix=pTable+(*pSrc++); - nSize--; - } - - while( nSize ) - { - nSize--; - nV=*pSrc++; - for( p=pPrefix->pFirstChild; p!=NULL; p=p->pBrother ) - { - if (p->nValue==nV) - break; - } - - if( p) - pPrefix=p; - else - { - pIDOS->WriteBits(pPrefix->nCode,nCodeSize); - - if (nTableSize==4096) - { - pIDOS->WriteBits(nClearCode,nCodeSize); - - for (i=0; i<nClearCode; i++) - pTable[i].pFirstChild=NULL; - - nCodeSize=nDataSize+1; - nTableSize=nEOICode+1; - } - else - { - if(nTableSize==(USHORT)(1<<nCodeSize)) - nCodeSize++; - - p=pTable+(nTableSize++); - p->pBrother=pPrefix->pFirstChild; - pPrefix->pFirstChild=p; - p->nValue=nV; - p->pFirstChild=NULL; - } - - pPrefix=pTable+nV; - } - } - } -} - -// ------------------------------------------------------------------------ - -void GIFLZWCompressor::EndCompression() -{ - if( pIDOS ) - { - if( pPrefix ) - pIDOS->WriteBits(pPrefix->nCode,nCodeSize); - - pIDOS->WriteBits( nEOICode,nCodeSize ); - delete[] pTable; - delete pIDOS; - pIDOS=NULL; - } -} |