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587 | /* -*- 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 <tools/stream.hxx>
#include <vcl/graph.hxx>
#include <vcl/outdev.hxx>
#include <vcl/bitmapaccess.hxx>
#include <vcl/FilterConfigItem.hxx>
#include <com/sun/star/task/XStatusIndicator.hpp>
#define NewSubfileType 254
#define ImageWidth 256
#define ImageLength 257
#define BitsPerSample 258
#define Compression 259
#define PhotometricInterpretation 262
#define StripOffsets 273
#define SamplesPerPixel 277
#define RowsPerStrip 278
#define StripByteCounts 279
#define XResolution 282
#define YResolution 283
#define PlanarConfiguration 284
#define ResolutionUnit 296
#define ColorMap 320
namespace {
struct TIFFLZWCTreeNode
{
TIFFLZWCTreeNode* pBrother; // next node with the same father
TIFFLZWCTreeNode* pFirstChild; // first son
sal_uInt16 nCode; // The code for the string of pixel values, which arises if... <missing comment>
sal_uInt16 nValue; // pixel value
};
class TIFFWriter
{
private:
SvStream& m_rOStm;
sal_uInt32 mnStreamOfs;
bool mbStatus;
BitmapReadAccess* mpAcc;
sal_uInt32 mnWidth, mnHeight, mnColors;
sal_uInt32 mnCurAllPictHeight;
sal_uInt32 mnSumOfAllPictHeight;
sal_uInt32 mnBitsPerPixel;
sal_uInt32 mnLastPercent;
sal_uInt32 mnLatestIfdPos;
sal_uInt16 mnTagCount; // number of tags already written
sal_uInt32 mnCurrentTagCountPos; // offset to the position where the current
// tag count is to insert
sal_uInt32 mnXResPos; // if != 0 this DWORDs stores the
sal_uInt32 mnYResPos; // actual streamposition of the
sal_uInt32 mnPalPos; // Tag Entry
sal_uInt32 mnBitmapPos;
sal_uInt32 mnStripByteCountPos;
std::unique_ptr<TIFFLZWCTreeNode[]> pTable;
TIFFLZWCTreeNode* pPrefix;
sal_uInt16 nDataSize;
sal_uInt16 nClearCode;
sal_uInt16 nEOICode;
sal_uInt16 nTableSize;
sal_uInt16 nCodeSize;
sal_uInt32 nOffset;
sal_uInt32 dwShift;
css::uno::Reference< css::task::XStatusIndicator > xStatusIndicator;
void ImplCallback( sal_uInt32 nPercent );
bool ImplWriteHeader( bool bMultiPage );
void ImplWritePalette();
void ImplWriteBody();
void ImplWriteTag( sal_uInt16 TagID, sal_uInt16 DataType, sal_uInt32 NumberOfItems, sal_uInt32 Value);
void ImplWriteResolution( sal_uInt64 nStreamPos, sal_uInt32 nResolutionUnit );
void StartCompression();
void Compress( sal_uInt8 nSrc );
void EndCompression();
inline void WriteBits( sal_uInt16 nCode, sal_uInt16 nCodeLen );
public:
explicit TIFFWriter(SvStream &rStream);
bool WriteTIFF( const Graphic& rGraphic, FilterConfigItem const * pFilterConfigItem );
};
}
TIFFWriter::TIFFWriter(SvStream &rStream)
: m_rOStm(rStream)
, mnStreamOfs(0)
, mbStatus(true)
, mpAcc(nullptr)
, mnWidth(0)
, mnHeight(0)
, mnColors(0)
, mnCurAllPictHeight(0)
, mnSumOfAllPictHeight(0)
, mnBitsPerPixel(0)
, mnLastPercent(0)
, mnLatestIfdPos(0)
, mnTagCount(0)
, mnCurrentTagCountPos(0)
, mnXResPos(0)
, mnYResPos(0)
, mnPalPos(0)
, mnBitmapPos(0)
, mnStripByteCountPos(0)
, pPrefix(nullptr)
, nDataSize(0)
, nClearCode(0)
, nEOICode(0)
, nTableSize(0)
, nCodeSize(0)
, nOffset(0)
, dwShift(0)
{
}
bool TIFFWriter::WriteTIFF( const Graphic& rGraphic, FilterConfigItem const * pFilterConfigItem)
{
if ( pFilterConfigItem )
{
xStatusIndicator = pFilterConfigItem->GetStatusIndicator();
if ( xStatusIndicator.is() )
{
xStatusIndicator->start( OUString(), 100 );
}
}
const SvStreamEndian nOldFormat = m_rOStm.GetEndian();
mnStreamOfs = m_rOStm.Tell();
// we will use the BIG Endian Mode
// TIFF header
m_rOStm.SetEndian( SvStreamEndian::BIG );
m_rOStm.WriteUInt32( 0x4d4d002a ); // TIFF identifier
mnLatestIfdPos = m_rOStm.Tell();
m_rOStm.WriteUInt32( 0 );
if( mbStatus )
{
Animation aAnimation = rGraphic.IsAnimated() ? rGraphic.GetAnimation() : Animation();
if (!rGraphic.IsAnimated())
aAnimation.Insert(AnimationBitmap(rGraphic.GetBitmapEx(), Point(), Size()));
for (size_t i = 0; i < aAnimation.Count(); ++i)
mnSumOfAllPictHeight += aAnimation.Get(i).maBitmapEx.GetSizePixel().Height();
for (size_t i = 0; mbStatus && i < aAnimation.Count(); ++i)
{
mnPalPos = 0;
const AnimationBitmap& rAnimationBitmap = aAnimation.Get( i );
Bitmap aBmp = rAnimationBitmap.maBitmapEx.GetBitmap();
mpAcc = aBmp.AcquireReadAccess();
if ( mpAcc )
{
mnBitsPerPixel = aBmp.GetBitCount();
// export code below only handles four discrete cases
mnBitsPerPixel =
mnBitsPerPixel <= 1 ? 1 : mnBitsPerPixel <= 4 ? 4 : mnBitsPerPixel <= 8 ? 8 : 24;
if ( ImplWriteHeader( aAnimation.Count() > 0 ) )
{
Size aDestMapSize( 300, 300 );
const MapMode& aMapMode( aBmp.GetPrefMapMode() );
if ( aMapMode.GetMapUnit() != MapUnit::MapPixel )
{
const Size aPrefSize( rGraphic.GetPrefSize() );
aDestMapSize = OutputDevice::LogicToLogic(aPrefSize, aMapMode, MapMode(MapUnit::MapInch));
}
ImplWriteResolution( mnXResPos, aDestMapSize.Width() );
ImplWriteResolution( mnYResPos, aDestMapSize.Height() );
if ( mnPalPos )
ImplWritePalette();
ImplWriteBody();
}
sal_uInt32 nCurPos = m_rOStm.Tell();
m_rOStm.Seek( mnCurrentTagCountPos );
m_rOStm.WriteUInt16( mnTagCount );
m_rOStm.Seek( nCurPos );
Bitmap::ReleaseAccess( mpAcc );
}
else
mbStatus = false;
}
}
m_rOStm.SetEndian( nOldFormat );
if ( xStatusIndicator.is() )
xStatusIndicator->end();
return mbStatus;
}
void TIFFWriter::ImplCallback( sal_uInt32 nPercent )
{
if ( xStatusIndicator.is() )
{
if( nPercent >= mnLastPercent + 3 )
{
mnLastPercent = nPercent;
if ( nPercent <= 100 )
xStatusIndicator->setValue( nPercent );
}
}
}
bool TIFFWriter::ImplWriteHeader( bool bMultiPage )
{
mnTagCount = 0;
mnWidth = mpAcc->Width();
mnHeight = mpAcc->Height();
if ( mnWidth && mnHeight && mnBitsPerPixel && mbStatus )
{
sal_uInt32 nCurrentPos = m_rOStm.Tell();
m_rOStm.Seek( mnLatestIfdPos );
m_rOStm.WriteUInt32( nCurrentPos - mnStreamOfs ); // offset to the IFD
m_rOStm.Seek( nCurrentPos );
// (OFS8) TIFF image file directory (IFD)
mnCurrentTagCountPos = m_rOStm.Tell();
m_rOStm.WriteUInt16( 0 ); // the number of tangents to insert later
sal_uInt32 nSubFileFlags = 0;
if ( bMultiPage )
nSubFileFlags |= 2;
ImplWriteTag( NewSubfileType, 4, 1, nSubFileFlags );
ImplWriteTag( ImageWidth, 4, 1, mnWidth );
ImplWriteTag( ImageLength, 4, 1, mnHeight);
ImplWriteTag( BitsPerSample, 3, 1, ( mnBitsPerPixel == 24 ) ? 8 : mnBitsPerPixel );
ImplWriteTag( Compression, 3, 1, 5 );
sal_uInt8 nTemp;
switch ( mnBitsPerPixel )
{
case 1 :
nTemp = 1;
break;
case 4 :
case 8 :
nTemp = 3;
break;
case 24:
nTemp = 2;
break;
default:
nTemp = 0; // -Wall set a default...
break;
}
ImplWriteTag( PhotometricInterpretation, 3, 1, nTemp );
mnBitmapPos = m_rOStm.Tell();
ImplWriteTag( StripOffsets, 4, 1, 0 );
ImplWriteTag( SamplesPerPixel, 3, 1, ( mnBitsPerPixel == 24 ) ? 3 : 1 );
ImplWriteTag( RowsPerStrip, 4, 1, mnHeight );
mnStripByteCountPos = m_rOStm.Tell();
ImplWriteTag( StripByteCounts, 4, 1, ( ( mnWidth * mnBitsPerPixel * mnHeight ) + 7 ) >> 3 );
mnXResPos = m_rOStm.Tell();
ImplWriteTag( XResolution, 5, 1, 0 );
mnYResPos = m_rOStm.Tell();
ImplWriteTag( YResolution, 5, 1, 0 );
if ( mnBitsPerPixel != 1 )
ImplWriteTag( PlanarConfiguration, 3, 1, 1 ); // ( RGB ORDER )
ImplWriteTag( ResolutionUnit, 3, 1, 2); // Resolution Unit is Inch
if ( ( mnBitsPerPixel == 4 ) || ( mnBitsPerPixel == 8 ) )
{
mnColors = mpAcc->GetPaletteEntryCount();
mnPalPos = m_rOStm.Tell();
ImplWriteTag( ColorMap, 3, 3 * mnColors, 0 );
}
// and last we write zero to close the num dir entries list
mnLatestIfdPos = m_rOStm.Tell();
m_rOStm.WriteUInt32( 0 ); // there are no more IFD
}
else
mbStatus = false;
return mbStatus;
}
void TIFFWriter::ImplWritePalette()
{
sal_uInt64 nCurrentPos = m_rOStm.Tell();
m_rOStm.Seek( mnPalPos + 8 ); // the palette tag entry needs the offset
m_rOStm.WriteUInt32( nCurrentPos - mnStreamOfs ); // to the palette colors
m_rOStm.Seek( nCurrentPos );
for ( sal_uInt32 i = 0; i < mnColors; i++ )
{
const BitmapColor& rColor = mpAcc->GetPaletteColor( i );
m_rOStm.WriteUInt16( rColor.GetRed() << 8 );
}
for ( sal_uInt32 i = 0; i < mnColors; i++ )
{
const BitmapColor& rColor = mpAcc->GetPaletteColor( i );
m_rOStm.WriteUInt16( rColor.GetGreen() << 8 );
}
for ( sal_uInt32 i = 0; i < mnColors; i++ )
{
const BitmapColor& rColor = mpAcc->GetPaletteColor( i );
m_rOStm.WriteUInt16( rColor.GetBlue() << 8 );
}
}
void TIFFWriter::ImplWriteBody()
{
sal_uInt8 nTemp = 0;
sal_uInt8 nShift;
sal_uInt32 j, x, y;
sal_uInt64 nGfxBegin = m_rOStm.Tell();
m_rOStm.Seek( mnBitmapPos + 8 ); // the strip offset tag entry needs the offset
m_rOStm.WriteUInt32( nGfxBegin - mnStreamOfs ); // to the bitmap data
m_rOStm.Seek( nGfxBegin );
StartCompression();
switch( mnBitsPerPixel )
{
case 24 :
{
for ( y = 0; y < mnHeight; y++, mnCurAllPictHeight++ )
{
ImplCallback( 100 * mnCurAllPictHeight / mnSumOfAllPictHeight );
Scanline pScanline = mpAcc->GetScanline( y );
for ( x = 0; x < mnWidth; x++ )
{
const BitmapColor& rColor = mpAcc->GetPixelFromData( pScanline, x );
Compress( rColor.GetRed() );
Compress( rColor.GetGreen() );
Compress( rColor.GetBlue() );
}
}
}
break;
case 8 :
{
for ( y = 0; y < mnHeight; y++, mnCurAllPictHeight++ )
{
ImplCallback( 100 * mnCurAllPictHeight / mnSumOfAllPictHeight );
Scanline pScanline = mpAcc->GetScanline( y );
for ( x = 0; x < mnWidth; x++ )
{
Compress( mpAcc->GetIndexFromData( pScanline, x ) );
}
}
}
break;
case 4 :
{
for ( nShift = 0, y = 0; y < mnHeight; y++, mnCurAllPictHeight++ )
{
ImplCallback( 100 * mnCurAllPictHeight / mnSumOfAllPictHeight );
Scanline pScanline = mpAcc->GetScanline( y );
for ( x = 0; x < mnWidth; x++, nShift++ )
{
if (!( nShift & 1 ))
nTemp = ( mpAcc->GetIndexFromData( pScanline, x ) << 4 );
else
Compress( static_cast<sal_uInt8>( nTemp | ( mpAcc->GetIndexFromData( pScanline, x ) & 0xf ) ) );
}
if ( nShift & 1 )
Compress( nTemp );
}
}
break;
case 1 :
{
j = 1;
for ( y = 0; y < mnHeight; y++, mnCurAllPictHeight++ )
{
ImplCallback( 100 * mnCurAllPictHeight / mnSumOfAllPictHeight );
Scanline pScanline = mpAcc->GetScanline( y );
for ( x = 0; x < mnWidth; x++)
{
j <<= 1;
j |= ( ( ~mpAcc->GetIndexFromData( pScanline, x ) ) & 1 );
if ( j & 0x100 )
{
Compress( static_cast<sal_uInt8>(j) );
j = 1;
}
}
if ( j != 1 )
{
Compress( static_cast<sal_uInt8>(j << ( ( ( x & 7) ^ 7 ) + 1 ) ) );
j = 1;
}
}
}
break;
default:
{
mbStatus = false;
}
break;
}
EndCompression();
if ( mnStripByteCountPos && mbStatus )
{
sal_uInt64 nGfxEnd = m_rOStm.Tell();
m_rOStm.Seek( mnStripByteCountPos + 8 );
m_rOStm.WriteUInt32( nGfxEnd - nGfxBegin ); // mnStripByteCountPos needs the size of the compression data
m_rOStm.Seek( nGfxEnd );
}
}
void TIFFWriter::ImplWriteResolution( sal_uInt64 nStreamPos, sal_uInt32 nResolutionUnit )
{
sal_uInt64 nCurrentPos = m_rOStm.Tell();
m_rOStm.Seek( nStreamPos + 8 );
m_rOStm.WriteUInt32( nCurrentPos - mnStreamOfs );
m_rOStm.Seek( nCurrentPos );
m_rOStm.WriteUInt32( 1 );
m_rOStm.WriteUInt32( nResolutionUnit );
}
void TIFFWriter::ImplWriteTag( sal_uInt16 nTagID, sal_uInt16 nDataType, sal_uInt32 nNumberOfItems, sal_uInt32 nValue)
{
mnTagCount++;
m_rOStm.WriteUInt16( nTagID );
m_rOStm.WriteUInt16( nDataType );
m_rOStm.WriteUInt32( nNumberOfItems );
if ( nDataType == 3 )
nValue <<=16; // in Big Endian Mode WORDS needed to be shifted to a DWORD
m_rOStm.WriteUInt32( nValue );
}
inline void TIFFWriter::WriteBits( sal_uInt16 nCode, sal_uInt16 nCodeLen )
{
dwShift |= ( nCode << ( nOffset - nCodeLen ) );
nOffset -= nCodeLen;
while ( nOffset < 24 )
{
m_rOStm.WriteUChar( dwShift >> 24 );
dwShift <<= 8;
nOffset += 8;
}
if ( nCode == 257 && nOffset != 32 )
{
m_rOStm.WriteUChar( dwShift >> 24 );
}
}
void TIFFWriter::StartCompression()
{
sal_uInt16 i;
nDataSize = 8;
nClearCode = 1 << nDataSize;
nEOICode = nClearCode + 1;
nTableSize = nEOICode + 1;
nCodeSize = nDataSize + 1;
nOffset = 32; // number of free bits in dwShift
dwShift = 0;
pTable.reset(new TIFFLZWCTreeNode[ 4096 ]);
for ( i = 0; i < 4096; i++)
{
pTable[ i ].pBrother = pTable[ i ].pFirstChild = nullptr;
pTable[ i ].nCode = i;
pTable[ i ].nValue = static_cast<sal_uInt8>( i );
}
pPrefix = nullptr;
WriteBits( nClearCode, nCodeSize );
}
void TIFFWriter::Compress( sal_uInt8 nCompThis )
{
TIFFLZWCTreeNode* p;
sal_uInt16 i;
sal_uInt8 nV;
if( !pPrefix )
{
pPrefix = &pTable[nCompThis];
}
else
{
nV = nCompThis;
for( p = pPrefix->pFirstChild; p != nullptr; p = p->pBrother )
{
if ( p->nValue == nV )
break;
}
if( p )
pPrefix = p;
else
{
WriteBits( pPrefix->nCode, nCodeSize );
if ( nTableSize == 409 )
{
WriteBits( nClearCode, nCodeSize );
for ( i = 0; i < nClearCode; i++ )
pTable[ i ].pFirstChild = nullptr;
nCodeSize = nDataSize + 1;
nTableSize = nEOICode + 1;
}
else
{
if( nTableSize == static_cast<sal_uInt16>( ( 1 << nCodeSize ) - 1 ) )
nCodeSize++;
p = &pTable[ nTableSize++ ];
p->pBrother = pPrefix->pFirstChild;
pPrefix->pFirstChild = p;
p->nValue = nV;
p->pFirstChild = nullptr;
}
pPrefix = &pTable[nV];
}
}
}
void TIFFWriter::EndCompression()
{
if( pPrefix )
WriteBits( pPrefix->nCode, nCodeSize );
WriteBits( nEOICode, nCodeSize );
pTable.reset();
}
extern "C" SAL_DLLPUBLIC_EXPORT bool
etiGraphicExport( SvStream& rStream, Graphic& rGraphic, FilterConfigItem* pFilterConfigItem )<--- Parameter 'rGraphic' can be declared with const
{
TIFFWriter aWriter(rStream);
return aWriter.WriteTIFF( rGraphic, pFilterConfigItem );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|