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path: root/filter/source/graphicfilter/itga/itga.cxx
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-rw-r--r--filter/source/graphicfilter/itga/itga.cxx791
1 files changed, 0 insertions, 791 deletions
diff --git a/filter/source/graphicfilter/itga/itga.cxx b/filter/source/graphicfilter/itga/itga.cxx
deleted file mode 100644
index 8c8af9d52cd8..000000000000
--- a/filter/source/graphicfilter/itga/itga.cxx
+++ /dev/null
@@ -1,791 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*
- * This file is part of the LibreOffice project.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * This file incorporates work covered by the following license notice:
- *
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed
- * with this work for additional information regarding copyright
- * ownership. The ASF licenses this file to you under the Apache
- * License, Version 2.0 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.apache.org/licenses/LICENSE-2.0 .
- */
-
-
-#include <vcl/graph.hxx>
-#include <vcl/BitmapTools.hxx>
-#include <tools/stream.hxx>
-#include <memory>
-
-class FilterConfigItem;
-
-//============================ TGAReader ==================================
-
-namespace {
-
-struct TGAFileHeader
-{
- sal_uInt8 nImageIDLength;
- sal_uInt8 nColorMapType;
- sal_uInt8 nImageType;
- sal_uInt16 nColorMapFirstEntryIndex;
- sal_uInt16 nColorMapLength;
- sal_uInt8 nColorMapEntrySize;
- sal_uInt16 nColorMapXOrigin;
- sal_uInt16 nColorMapYOrigin;
- sal_uInt16 nImageWidth;
- sal_uInt16 nImageHeight;
- sal_uInt8 nPixelDepth;
- sal_uInt8 nImageDescriptor;
-};
-
-#define SizeOfTGAFileFooter 26
-
-struct TGAFileFooter
-{
- sal_uInt32 nExtensionFileOffset;
- sal_uInt32 nDeveloperDirectoryOffset;
- sal_uInt32 nSignature[4];
- sal_uInt8 nPadByte;
- sal_uInt8 nStringTerminator;
-};
-
-#define SizeOfTGAExtension 495
-
-struct TGAExtension
-{
- sal_uInt16 nExtensionSize;
- char sAuthorName[41];
- char sAuthorComment[324];
- char sDateTimeStamp[12];
- char sJobNameID[41];
- char sSoftwareID[41];
- sal_uInt16 nSoftwareVersionNumber;
- sal_uInt8 nSoftwareVersionLetter;
- sal_uInt32 nKeyColor;
- sal_uInt16 nPixelAspectRatioNumerator;
- sal_uInt16 nPixelAspectRatioDeNumerator;
- sal_uInt16 nGammaValueNumerator;
- sal_uInt16 nGammaValueDeNumerator;
- sal_uInt32 nColorCorrectionOffset;
- sal_uInt32 nPostageStampOffset;
- sal_uInt32 nScanLineOffset;
- sal_uInt8 nAttributesType;
-};
-
-class TGAReader {
-
-private:
-
- SvStream& m_rTGA;
-
- std::unique_ptr<vcl::bitmap::RawBitmap> mpBitmap;
- std::vector<Color> mvPalette;
- std::unique_ptr<TGAFileHeader>
- mpFileHeader;
- std::unique_ptr<TGAFileFooter>
- mpFileFooter;
- std::unique_ptr<TGAExtension>
- mpExtension;
- std::unique_ptr<sal_uInt32[]>
- mpColorMap;
-
- bool mbStatus;
-
- sal_uInt8 mnTGAVersion; // Enhanced TGA is defined as Version 2.0
- sal_uInt16 mnDestBitDepth;
- bool mbIndexing; // sal_True if source contains indexing color values
- bool mbEncoding; // sal_True if source is compressed
-
- bool ImplReadHeader();
- bool ImplReadPalette();
- bool ImplReadBody();
-
-public:
- explicit TGAReader(SvStream &rTGA);
- bool ReadTGA(Graphic &rGraphic);
-};
-
-}
-
-//=================== Methods of TGAReader ==============================
-
-TGAReader::TGAReader(SvStream &rTGA)
- : m_rTGA(rTGA)
- , mbStatus(true)
- , mnTGAVersion(1)
- , mnDestBitDepth(8)
- , mbIndexing(false)
- , mbEncoding(false)
-{
-}
-
-bool TGAReader::ReadTGA(Graphic & rGraphic)
-{
- if ( m_rTGA.GetError() )
- return false;
-
- m_rTGA.SetEndian( SvStreamEndian::LITTLE );
-
- // Kopf einlesen:
-
- if ( !m_rTGA.GetError() )
- {
- mbStatus = ImplReadHeader();
- if (mbStatus)
- mbStatus = mpFileHeader->nImageWidth && mpFileHeader->nImageHeight;
- if (mbStatus)
- {
- sal_Size nSize = mpFileHeader->nImageWidth;
- nSize *= mpFileHeader->nImageHeight;
- if (nSize > SAL_MAX_INT32/2/3)
- return false;
-
- mpBitmap.reset( new vcl::bitmap::RawBitmap( Size( mpFileHeader->nImageWidth, mpFileHeader->nImageHeight ), 24 ) );
- if ( mbIndexing )
- mbStatus = ImplReadPalette();
- if ( mbStatus )
- mbStatus = ImplReadBody();
-
- if ( mbStatus )
- rGraphic = vcl::bitmap::CreateFromData(std::move(*mpBitmap));
- }
- }
- return mbStatus;
-}
-
-
-bool TGAReader::ImplReadHeader()
-{
- mpFileHeader.reset( new TGAFileHeader );
-
- m_rTGA.ReadUChar( mpFileHeader->nImageIDLength ).ReadUChar( mpFileHeader->nColorMapType ).ReadUChar( mpFileHeader->nImageType ). ReadUInt16( mpFileHeader->nColorMapFirstEntryIndex ).ReadUInt16( mpFileHeader->nColorMapLength ).ReadUChar( mpFileHeader->nColorMapEntrySize ). ReadUInt16( mpFileHeader->nColorMapXOrigin ).ReadUInt16( mpFileHeader->nColorMapYOrigin ).ReadUInt16( mpFileHeader->nImageWidth ). ReadUInt16( mpFileHeader->nImageHeight ).ReadUChar( mpFileHeader->nPixelDepth ).ReadUChar( mpFileHeader->nImageDescriptor );
-
- if ( !m_rTGA.good())
- return false;
-
- if ( mpFileHeader->nColorMapType > 1 )
- return false;
- if ( mpFileHeader->nColorMapType == 1 )
- mbIndexing = true;
-
- // first we want to get the version
- mpFileFooter.reset( new TGAFileFooter ); // read the TGA-File-Footer to determine whether
- // we got an old TGA format or the new one
-
- sal_uInt64 nCurStreamPos = m_rTGA.Tell();
- m_rTGA.Seek( STREAM_SEEK_TO_END );
- sal_uInt64 nTemp = m_rTGA.Tell();
- m_rTGA.Seek( nTemp - SizeOfTGAFileFooter );
-
- m_rTGA.ReadUInt32( mpFileFooter->nExtensionFileOffset ).ReadUInt32( mpFileFooter->nDeveloperDirectoryOffset ). ReadUInt32( mpFileFooter->nSignature[0] ).ReadUInt32( mpFileFooter->nSignature[1] ).ReadUInt32( mpFileFooter->nSignature[2] ). ReadUInt32( mpFileFooter->nSignature[3] ).ReadUChar( mpFileFooter->nPadByte ).ReadUChar( mpFileFooter->nStringTerminator );
-
-
- if ( !m_rTGA.good())
- return false;
-
- // check for sal_True, VISI, ON-X, FILE in the signatures
- if ( mpFileFooter->nSignature[ 0 ] == (('T'<<24)|('R'<<16)|('U'<<8)|'E') &&
- mpFileFooter->nSignature[ 1 ] == (('V'<<24)|('I'<<16)|('S'<<8)|'I') &&
- mpFileFooter->nSignature[ 2 ] == (('O'<<24)|('N'<<16)|('-'<<8)|'X') &&
- mpFileFooter->nSignature[ 3 ] == (('F'<<24)|('I'<<16)|('L'<<8)|'E') )
- {
- mpExtension.reset( new TGAExtension );
-
- m_rTGA.Seek( mpFileFooter->nExtensionFileOffset );
- m_rTGA.ReadUInt16( mpExtension->nExtensionSize );
- if ( !m_rTGA.good())
- return false;
- if ( mpExtension->nExtensionSize >= SizeOfTGAExtension )
- {
- mnTGAVersion = 2;
-
- m_rTGA.ReadBytes(mpExtension->sAuthorName, 41);
- m_rTGA.ReadBytes(mpExtension->sAuthorComment, 324);
- m_rTGA.ReadBytes(mpExtension->sDateTimeStamp, 12);
- m_rTGA.ReadBytes(mpExtension->sJobNameID, 12);
- m_rTGA.ReadChar( mpExtension->sJobNameID[ 0 ] ).ReadChar( mpExtension->sJobNameID[ 1 ] ).ReadChar( mpExtension->sJobNameID[ 2 ] );
- m_rTGA.ReadBytes(mpExtension->sSoftwareID, 41);
- m_rTGA.ReadUInt16( mpExtension->nSoftwareVersionNumber ).ReadUChar( mpExtension->nSoftwareVersionLetter )
- .ReadUInt32( mpExtension->nKeyColor ).ReadUInt16( mpExtension->nPixelAspectRatioNumerator )
- .ReadUInt16( mpExtension->nPixelAspectRatioDeNumerator ).ReadUInt16( mpExtension->nGammaValueNumerator )
- .ReadUInt16( mpExtension->nGammaValueDeNumerator ).ReadUInt32( mpExtension->nColorCorrectionOffset )
- .ReadUInt32( mpExtension->nPostageStampOffset ).ReadUInt32( mpExtension->nScanLineOffset )
- .ReadUChar( mpExtension->nAttributesType );
-
- if ( !m_rTGA.good())
- return false;
- }
- }
- m_rTGA.Seek( nCurStreamPos );
-
- // using the TGA file specification this was the correct form but adobe photoshop sets nImageDescriptor
- // equal to nPixelDepth
- // mnDestBitDepth = mpFileHeader->nPixelDepth - ( mpFileHeader->nImageDescriptor & 0xf );
- mnDestBitDepth = mpFileHeader->nPixelDepth;
-
- if ( mnDestBitDepth == 8 ) // this is a patch for grayscale pictures not including a palette
- mbIndexing = true;
-
- if ( mnDestBitDepth > 32 ) // maybe the pixeldepth is invalid
- return false;
- else if ( mnDestBitDepth > 8 )
- mnDestBitDepth = 24;
- else if ( mnDestBitDepth > 4 )
- mnDestBitDepth = 8;
- else if ( mnDestBitDepth > 2 )
- mnDestBitDepth = 4;
-
- if ( !mbIndexing && ( mnDestBitDepth < 15 ) )
- return false;
-
- switch ( mpFileHeader->nImageType )
- {
- case 9 : // encoding for colortype 9, 10, 11
- case 10 :
- case 11 :
- mbEncoding = true;
- break;
- }
-
- if ( mpFileHeader->nImageIDLength ) // skip the Image ID
- m_rTGA.SeekRel( mpFileHeader->nImageIDLength );
-
- return mbStatus;
-}
-
-
-bool TGAReader::ImplReadBody()
-{
-
- sal_uInt16 nXCount, nYCount, nRGB16;
- sal_uInt8 nRed, nGreen, nBlue, nRunCount, nDummy, nDepth;
-
- // this four variables match the image direction
- tools::Long nY, nYAdd, nX, nXAdd, nXStart;
-
- nX = nXStart = nY = 0;
- nXCount = nYCount = 0;
- nYAdd = nXAdd = 1;
-
- if ( mpFileHeader->nImageDescriptor & 0x10 )
- {
- nX = nXStart = mpFileHeader->nImageWidth - 1;
- nXAdd -= 2;
- }
-
- if ( !(mpFileHeader->nImageDescriptor & 0x20 ) )
- {
- nY = mpFileHeader->nImageHeight - 1;
- nYAdd -=2;
- }
-
- nDepth = mpFileHeader->nPixelDepth;
-
- if ( mbEncoding )
- {
- if ( mbIndexing )
- {
- switch( nDepth )
- {
- // 16 bit encoding + indexing
- case 16 :
- while ( nYCount < mpFileHeader->nImageHeight )
- {
- m_rTGA.ReadUChar( nRunCount );
- if ( !m_rTGA.good())
- return false;
- if ( nRunCount & 0x80 ) // a run length packet
- {
- m_rTGA.ReadUInt16( nRGB16 );
- if ( nRGB16 >= mpFileHeader->nColorMapLength )
- return false;
- nRed = static_cast<sal_uInt8>( mpColorMap[ nRGB16 ] >> 16 );
- nGreen = static_cast<sal_uInt8>( mpColorMap[ nRGB16 ] >> 8 );
- nBlue = static_cast<sal_uInt8>( mpColorMap[ nRGB16 ] );
- if ( !m_rTGA.good())
- return false;
- for ( sal_uInt16 i = 0; i < ( ( nRunCount & 0x7f ) + 1 ); i++ )
- {
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- nX += nXAdd;
- nXCount++;
- if ( nXCount == mpFileHeader->nImageWidth )
- {
- nX = nXStart;
- nXCount = 0;
- nY += nYAdd;
- nYCount++;
-
- if( nYCount >= mpFileHeader->nImageHeight )
- break;
- }
- }
- }
- else // a raw packet
- {
- for ( sal_uInt16 i = 0; i < ( ( nRunCount & 0x7f ) + 1 ); i++ )
- {
- m_rTGA.ReadUInt16( nRGB16 );
- if ( !m_rTGA.good())
- return false;
- if ( nRGB16 >= mpFileHeader->nColorMapLength )
- return false;
- nRed = static_cast<sal_uInt8>( mpColorMap[ nRGB16 ] >> 16 );
- nGreen = static_cast<sal_uInt8>( mpColorMap[ nRGB16 ] >> 8 );
- nBlue = static_cast<sal_uInt8>( mpColorMap[ nRGB16 ] );
- if ( !m_rTGA.good())
- return false;
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- nX += nXAdd;
- nXCount++;
- if ( nXCount == mpFileHeader->nImageWidth )
- {
- nX = nXStart;
- nXCount = 0;
- nY += nYAdd;
- nYCount++;
-
- if( nYCount >= mpFileHeader->nImageHeight )
- break;
- }
- }
- }
- }
- break;
-
- // 8 bit encoding + indexing
- case 8 :
- while ( nYCount < mpFileHeader->nImageHeight )
- {
- m_rTGA.ReadUChar( nRunCount );
- if ( !m_rTGA.good())
- return false;
- if ( nRunCount & 0x80 ) // a run length packet
- {
- m_rTGA.ReadUChar( nDummy );
- if ( !m_rTGA.good())
- return false;
- if ( nDummy >= mpFileHeader->nColorMapLength )
- return false;
- for ( sal_uInt16 i = 0; i < ( ( nRunCount & 0x7f ) + 1 ); i++ )
- {
- mpBitmap->SetPixel( nY, nX, mvPalette[nDummy] );
- nX += nXAdd;
- nXCount++;
- if ( nXCount == mpFileHeader->nImageWidth )
- {
- nX = nXStart;
- nXCount = 0;
- nY += nYAdd;
- nYCount++;
-
- if( nYCount >= mpFileHeader->nImageHeight )
- break;
- }
- }
- }
- else // a raw packet
- {
- for ( sal_uInt16 i = 0; i < ( ( nRunCount & 0x7f ) + 1 ); i++ )
- {
-
- m_rTGA.ReadUChar( nDummy );
- if ( !m_rTGA.good())
- return false;
- if ( nDummy >= mpFileHeader->nColorMapLength )
- return false;
- mpBitmap->SetPixel( nY, nX, mvPalette[nDummy] );
- nX += nXAdd;
- nXCount++;
- if ( nXCount == mpFileHeader->nImageWidth )
- {
- nX = nXStart;
- nXCount = 0;
- nY += nYAdd;
- nYCount++;
-
- if( nYCount >= mpFileHeader->nImageHeight )
- break;
- }
- }
- }
- }
- break;
- default:
- return false;
- }
- }
- else
- {
- switch( nDepth )
- {
- // 32 bit transparent true color encoding
- case 32 :
- {
- while ( nYCount < mpFileHeader->nImageHeight )
- {
- m_rTGA.ReadUChar( nRunCount );
- if ( !m_rTGA.good())
- return false;
- if ( nRunCount & 0x80 ) // a run length packet
- {
- m_rTGA.ReadUChar( nBlue ).ReadUChar( nGreen ).ReadUChar( nRed ).ReadUChar( nDummy );
- if ( !m_rTGA.good())
- return false;
- for ( sal_uInt16 i = 0; i < ( ( nRunCount & 0x7f ) + 1 ); i++ )
- {
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- nX += nXAdd;
- nXCount++;
- if ( nXCount == mpFileHeader->nImageWidth )
- {
- nX = nXStart;
- nXCount = 0;
- nY += nYAdd;
- nYCount++;
-
- if( nYCount >= mpFileHeader->nImageHeight )
- break;
- }
- }
- }
- else // a raw packet
- {
- for ( sal_uInt16 i = 0; i < ( ( nRunCount & 0x7f ) + 1 ); i++ )
- {
- m_rTGA.ReadUChar( nBlue ).ReadUChar( nGreen ).ReadUChar( nRed ).ReadUChar( nDummy );
- if ( !m_rTGA.good())
- return false;
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- nX += nXAdd;
- nXCount++;
- if ( nXCount == mpFileHeader->nImageWidth )
- {
- nX = nXStart;
- nXCount = 0;
- nY += nYAdd;
- nYCount++;
-
- if( nYCount >= mpFileHeader->nImageHeight )
- break;
- }
- }
- }
- }
- }
- break;
-
- // 24 bit true color encoding
- case 24 :
- while ( nYCount < mpFileHeader->nImageHeight )
- {
- m_rTGA.ReadUChar( nRunCount );
- if ( !m_rTGA.good())
- return false;
- if ( nRunCount & 0x80 ) // a run length packet
- {
- m_rTGA.ReadUChar( nBlue ).ReadUChar( nGreen ).ReadUChar( nRed );
- if ( !m_rTGA.good())
- return false;
- for ( sal_uInt16 i = 0; i < ( ( nRunCount & 0x7f ) + 1 ); i++ )
- {
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- nX += nXAdd;
- nXCount++;
- if ( nXCount == mpFileHeader->nImageWidth )
- {
- nX = nXStart;
- nXCount = 0;
- nY += nYAdd;
- nYCount++;
-
- if( nYCount >= mpFileHeader->nImageHeight )
- break;
- }
- }
- }
- else // a raw packet
- {
- for ( sal_uInt16 i = 0; i < ( ( nRunCount & 0x7f ) + 1 ); i++ )
- {
- m_rTGA.ReadUChar( nBlue ).ReadUChar( nGreen ).ReadUChar( nRed );
- if ( !m_rTGA.good())
- return false;
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- nX += nXAdd;
- nXCount++;
- if ( nXCount == mpFileHeader->nImageWidth )
- {
- nX = nXStart;
- nXCount = 0;
- nY += nYAdd;
- nYCount++;
-
- if( nYCount >= mpFileHeader->nImageHeight )
- break;
- }
- }
- }
- }
- break;
-
- // 16 bit true color encoding
- case 16 :
- while ( nYCount < mpFileHeader->nImageHeight )
- {
- m_rTGA.ReadUChar( nRunCount );
- if ( !m_rTGA.good())
- return false;
- if ( nRunCount & 0x80 ) // a run length packet
- {
- m_rTGA.ReadUInt16( nRGB16 );
- if ( !m_rTGA.good())
- return false;
- nRed = static_cast<sal_uInt8>( nRGB16 >> 7 ) & 0xf8;
- nGreen = static_cast<sal_uInt8>( nRGB16 >> 2 ) & 0xf8;
- nBlue = static_cast<sal_uInt8>( nRGB16 << 3 ) & 0xf8;
- for ( sal_uInt16 i = 0; i < ( ( nRunCount & 0x7f ) + 1 ); i++ )
- {
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- nX += nXAdd;
- nXCount++;
- if ( nXCount == mpFileHeader->nImageWidth )
- {
- nX = nXStart;
- nXCount = 0;
- nY += nYAdd;
- nYCount++;
-
- if( nYCount >= mpFileHeader->nImageHeight )
- break;
- }
- }
- }
- else // a raw packet
- {
- for ( sal_uInt16 i = 0; i < ( ( nRunCount & 0x7f ) + 1 ); i++ )
- {
- m_rTGA.ReadUInt16( nRGB16 );
- if ( !m_rTGA.good())
- return false;
- nRed = static_cast<sal_uInt8>( nRGB16 >> 7 ) & 0xf8;
- nGreen = static_cast<sal_uInt8>( nRGB16 >> 2 ) & 0xf8;
- nBlue = static_cast<sal_uInt8>( nRGB16 << 3 ) & 0xf8;
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- nX += nXAdd;
- nXCount++;
- if ( nXCount == mpFileHeader->nImageWidth )
- {
- nX = nXStart;
- nXCount = 0;
- nY += nYAdd;
- nYCount++;
-
- if( nYCount >= mpFileHeader->nImageHeight )
- break;
- }
- }
- }
- }
- break;
-
- default:
- return false;
- }
- }
- }
- else
- {
- for ( nYCount = 0; nYCount < mpFileHeader->nImageHeight; nYCount++, nY += nYAdd )
- {
- nX = nXStart;
- nXCount = 0;
-
- if ( mbIndexing )
- {
- switch( nDepth )
- {
- // 16 bit indexing
- case 16 :
- for (;nXCount < mpFileHeader->nImageWidth; nXCount++, nX += nXAdd )
- {
- m_rTGA.ReadUInt16( nRGB16 );
- if ( !m_rTGA.good())
- return false;
- if ( nRGB16 >= mpFileHeader->nColorMapLength )
- return false;
- nRed = static_cast<sal_uInt8>( mpColorMap[ nRGB16 ] >> 16 );
- nGreen = static_cast<sal_uInt8>( mpColorMap[ nRGB16 ] >> 8 );
- nBlue = static_cast<sal_uInt8>( mpColorMap[ nRGB16 ] );
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- }
- break;
-
- // 8 bit indexing
- case 8 :
- for (;nXCount < mpFileHeader->nImageWidth; nXCount++, nX += nXAdd )
- {
- m_rTGA.ReadUChar( nDummy );
- if ( !m_rTGA.good())
- return false;
- if ( nDummy >= mpFileHeader->nColorMapLength )
- return false;
- mpBitmap->SetPixel( nY, nX, Color(ColorTransparency, nDummy) );
- }
- break;
- default:
- return false;
- }
- }
- else
- {
- switch( nDepth )
- {
- // 32 bit true color
- case 32 :
- {
- for (;nXCount < mpFileHeader->nImageWidth; nXCount++, nX += nXAdd )
- {
- m_rTGA.ReadUChar( nBlue ).ReadUChar( nGreen ).ReadUChar( nRed ).ReadUChar( nDummy );
- if ( !m_rTGA.good())
- return false;
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- }
- }
- break;
-
- // 24 bit true color
- case 24 :
- for (;nXCount < mpFileHeader->nImageWidth; nXCount++, nX += nXAdd )
- {
- m_rTGA.ReadUChar( nBlue ).ReadUChar( nGreen ).ReadUChar( nRed );
- if ( !m_rTGA.good())
- return false;
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- }
- break;
-
- // 16 bit true color
- case 16 :
- for (;nXCount < mpFileHeader->nImageWidth; nXCount++, nX += nXAdd )
- {
- m_rTGA.ReadUInt16( nRGB16 );
- if ( !m_rTGA.good())
- return false;
- nRed = static_cast<sal_uInt8>( nRGB16 >> 7 ) & 0xf8;
- nGreen = static_cast<sal_uInt8>( nRGB16 >> 2 ) & 0xf8;
- nBlue = static_cast<sal_uInt8>( nRGB16 << 3 ) & 0xf8;
- mpBitmap->SetPixel( nY, nX, Color( nRed, nGreen, nBlue ) );
- }
- break;
- default:
- return false;
- }
- }
- }
- }
- return mbStatus;
-}
-
-
-bool TGAReader::ImplReadPalette()
-{
- if ( mbIndexing ) // read the colormap
- {
- sal_uInt16 nColors = mpFileHeader->nColorMapLength;
-
- if ( !nColors ) // colors == 0 ? -> we will build a grayscale palette
- {
- if ( mpFileHeader->nPixelDepth != 8 )
- return false;
- nColors = 256;
- mpFileHeader->nColorMapLength = 256;
- mpFileHeader->nColorMapEntrySize = 0x3f; // patch for the following switch routine
- }
- mpColorMap.reset( new sal_uInt32[ nColors ] ); // we will always index dwords
-
- switch( mpFileHeader->nColorMapEntrySize )
- {
- case 0x3f :
- {
- for (sal_uInt32 i = 0; i < nColors; ++i)
- {
- mpColorMap[ i ] = ( i << 16 ) + ( i << 8 ) + i;
- }
- }
- break;
-
- case 32 :
- for (sal_uInt16 i = 0; i < nColors; i++)
- {
- m_rTGA.ReadUInt32(mpColorMap[i]);
- }
- break;
-
- case 24 :
- {
- for ( sal_uInt16 i = 0; i < nColors; i++ )
- {
- sal_uInt8 nBlue;
- sal_uInt8 nGreen;
- sal_uInt8 nRed;
- m_rTGA.ReadUChar(nBlue).ReadUChar(nGreen).ReadUChar(nRed);
- mpColorMap[i] = (nRed << 16) | (nGreen << 8) | nBlue;
- }
- }
- break;
-
- case 15 :
- case 16 :
- {
- for ( sal_uInt16 i = 0; i < nColors; i++ )
- {
- sal_uInt16 nTemp;
- m_rTGA.ReadUInt16( nTemp );
- if ( !m_rTGA.good() )
- return false;
- mpColorMap[ i ] = ( ( nTemp & 0x7c00 ) << 9 ) + ( ( nTemp & 0x01e0 ) << 6 ) +
- ( ( nTemp & 0x1f ) << 3 );
- }
- }
- break;
-
- default :
- return false;
- }
- if ( mnDestBitDepth <= 8 )
- {
- sal_uInt16 nDestColors = ( 1 << mnDestBitDepth );
- if ( nColors > nDestColors )
- return false;
-
- mvPalette.resize( nColors );
- for ( sal_uInt16 i = 0; i < nColors; i++ )
- {
- mvPalette[i] = Color( static_cast<sal_uInt8>( mpColorMap[ i ] >> 16 ),
- static_cast<sal_uInt8>( mpColorMap[ i ] >> 8 ), static_cast<sal_uInt8>(mpColorMap[ i ] ) );
- }
- }
- }
-
- return mbStatus;
-}
-
-//================== GraphicImport - the exported function ================
-
-extern "C" SAL_DLLPUBLIC_EXPORT bool
-itgGraphicImport( SvStream & rStream, Graphic & rGraphic, FilterConfigItem* )
-{
- TGAReader aTGAReader(rStream);
-
- return aTGAReader.ReadTGA(rGraphic);
-}
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-05 19:29:33 +0000