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/* -*- 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/bmpacc.hxx>
#include <svtools/fltcall.hxx>
#include <svtools/FilterConfigItem.hxx>
//============================ RASWriter ==================================
class RASWriter {
private:
SvStream & m_rOStm;
sal_uInt16 mpOStmOldModus;
sal_Bool mbStatus;
BitmapReadAccess* mpAcc;
sal_uLong mnWidth, mnHeight;
sal_uInt16 mnColors, mnDepth;
sal_uLong mnRepCount;
sal_uInt8 mnRepVal;
com::sun::star::uno::Reference< com::sun::star::task::XStatusIndicator > xStatusIndicator;
void ImplCallback( sal_uLong nCurrentYPos );
sal_Bool ImplWriteHeader();
void ImplWritePalette();
void ImplWriteBody();
void ImplPutByte( sal_uInt8 ); // RLE decoding
public:
RASWriter(SvStream &rStream);
~RASWriter();
sal_Bool WriteRAS( const Graphic& rGraphic, FilterConfigItem* pFilterConfigItem );
};
//=================== Methoden von RASWriter ==============================
RASWriter::RASWriter(SvStream &rStream)
: m_rOStm(rStream)
, mbStatus(sal_True)
, mpAcc(NULL)
, mnRepCount( 0xffffffff )
{
}
// ------------------------------------------------------------------------
RASWriter::~RASWriter()
{
}
// ------------------------------------------------------------------------
void RASWriter::ImplCallback( sal_uLong nYPos )
{
if ( xStatusIndicator.is() )
xStatusIndicator->setValue( (sal_uInt16)( ( 100 * nYPos ) / mnHeight ) );
}
// ------------------------------------------------------------------------
sal_Bool RASWriter::WriteRAS( const Graphic& rGraphic, FilterConfigItem* pFilterConfigItem)
{
Bitmap aBmp;
if ( pFilterConfigItem )
{
xStatusIndicator = pFilterConfigItem->GetStatusIndicator();
if ( xStatusIndicator.is() )
{
rtl::OUString aMsg;
xStatusIndicator->start( aMsg, 100 );
}
}
BitmapEx aBmpEx( rGraphic.GetBitmapEx() );
aBmp = aBmpEx.GetBitmap();
if ( aBmp.GetBitCount() == 4 )
aBmp.Convert( BMP_CONVERSION_8BIT_COLORS );
mnDepth = aBmp.GetBitCount();
// export code below only handles three discrete cases
mnDepth = mnDepth <= 1 ? 1 : mnDepth <= 8 ? 8 : 24;
mpAcc = aBmp.AcquireReadAccess();
if ( mpAcc )
{
mpOStmOldModus = m_rOStm.GetNumberFormatInt();
m_rOStm.SetNumberFormatInt( NUMBERFORMAT_INT_BIGENDIAN );
if ( ImplWriteHeader() )
{
if ( mnDepth <= 8 )
ImplWritePalette();
ImplWriteBody();
}
aBmp.ReleaseAccess( mpAcc );
}
else
mbStatus = sal_False;
m_rOStm.SetNumberFormatInt( mpOStmOldModus );
if ( xStatusIndicator.is() )
xStatusIndicator->end();
return mbStatus;
}
// ------------------------------------------------------------------------
sal_Bool RASWriter::ImplWriteHeader()
{
mnWidth = mpAcc->Width();
mnHeight = mpAcc->Height();
if ( mnDepth <= 8 )
{
mnColors = mpAcc->GetPaletteEntryCount();
if (mnColors == 0)
mbStatus = sal_False;
}
if ( mbStatus && mnWidth && mnHeight && mnDepth )
{
m_rOStm << (sal_uInt32)0x59a66a95 << (sal_uInt32)mnWidth << (sal_uInt32)mnHeight
<< (sal_uInt32)mnDepth
<< (sal_uInt32)(( ( ( ( mnWidth * mnDepth ) + 15 ) >> 4 ) << 1 ) * mnHeight)
<< (sal_uInt32)2;
if ( mnDepth > 8 )
m_rOStm << (sal_uInt32)0 << (sal_uInt32)0;
else
{
m_rOStm << (sal_uInt32)1 << (sal_uInt32)( mnColors * 3 );
}
}
else mbStatus = sal_False;
return mbStatus;
}
// ------------------------------------------------------------------------
void RASWriter::ImplWritePalette()
{
sal_uInt16 i;
for ( i = 0; i < mnColors; m_rOStm << mpAcc->GetPaletteColor( i++ ).GetRed() ) ;
for ( i = 0; i < mnColors; m_rOStm << mpAcc->GetPaletteColor( i++ ).GetGreen() ) ;
for ( i = 0; i < mnColors; m_rOStm << mpAcc->GetPaletteColor( i++ ).GetBlue() ) ;
}
// ------------------------------------------------------------------------
void RASWriter::ImplWriteBody()
{
sal_uLong x, y;
if ( mnDepth == 24 )
{
for ( y = 0; y < mnHeight; y++ )
{
ImplCallback( y ); // processing output
for ( x = 0; x < mnWidth; x++ )
{
BitmapColor aColor( mpAcc->GetPixel( y, x ) );
ImplPutByte( aColor.GetBlue() ); // Format ist BGR
ImplPutByte( aColor.GetGreen() );
ImplPutByte( aColor.GetRed() );
}
if ( x & 1 ) ImplPutByte( 0 ); // WORD ALIGNMENT ???
}
}
else if ( mnDepth == 8 )
{
for ( y = 0; y < mnHeight; y++ )
{
ImplCallback( y ); // processing output
for ( x = 0; x < mnWidth; x++ )
{
ImplPutByte ( mpAcc->GetPixel( y, x ) );
}
if ( x & 1 ) ImplPutByte( 0 ); // WORD ALIGNMENT ???
}
}
else if ( mnDepth == 1 )
{
sal_uInt8 nDat = 0;
for ( y = 0; y < mnHeight; y++ )
{
ImplCallback( y ); // processing output
for ( x = 0; x < mnWidth; x++ )
{
nDat = ( ( nDat << 1 ) | ( mpAcc->GetPixel ( y, x ) & 1 ) );
if ( ( x & 7 ) == 7 )
ImplPutByte( nDat );
}
if ( x & 7 )
ImplPutByte( sal::static_int_cast< sal_uInt8 >(nDat << ( ( ( x & 7 ) ^ 7 ) + 1)) );// write remaining bits
if (!( ( x - 1 ) & 0x8 ) )
ImplPutByte( 0 ); // WORD ALIGNMENT ???
}
}
ImplPutByte( mnRepVal + 1 ); // end of RLE decoding
}
// ------------------------------------------------------------------------
void RASWriter::ImplPutByte( sal_uInt8 nPutThis )
{
if ( mnRepCount == 0xffffffff )
{
mnRepCount = 0;
mnRepVal = nPutThis;
}
else
{
if ( ( nPutThis == mnRepVal ) && ( mnRepCount != 0xff ) )
mnRepCount++;
else
{
if ( mnRepCount == 0 )
{
m_rOStm << (sal_uInt8)mnRepVal;
if ( mnRepVal == 0x80 )
m_rOStm << (sal_uInt8)0;
}
else
{
m_rOStm << (sal_uInt8)0x80;
m_rOStm << (sal_uInt8)mnRepCount;
m_rOStm << (sal_uInt8)mnRepVal;
}
mnRepVal = nPutThis;
mnRepCount = 0;
}
}
}
// ------------------------------------------------------------------------
// ---------------------
// - exported function -
// ---------------------
#ifdef DISABLE_DYNLOADING
#define GraphicExport eraGraphicExport
#endif
extern "C" SAL_DLLPUBLIC_EXPORT sal_Bool __LOADONCALLAPI
GraphicExport(SvStream& rStream, Graphic& rGraphic, FilterConfigItem* pFilterConfigItem, sal_Bool)
{
RASWriter aRASWriter(rStream);
return aRASWriter.WriteRAS( rGraphic, pFilterConfigItem );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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