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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 <sal/config.h>
#include <vcl/FilterConfigItem.hxx>
#include <vcl/graph.hxx>
#include <vcl/bitmapaccess.hxx>
#include <vcl/animate.hxx>
#include <tools/fract.hxx>
#include "lzwdecom.hxx"
#include "ccidecom.hxx"
namespace {
template< typename T > T BYTESWAP(T nByte) {
return ( nByte << 7 ) | ( ( nByte & 2 ) << 5 ) | ( ( nByte & 4 ) << 3 ) |
( ( nByte & 8 ) << 1 ) | ( ( nByte & 16 ) >> 1 ) |
( ( nByte & 32 ) >> 3 ) | ( ( nByte & 64 ) >> 5 ) |
( ( nByte & 128 ) >> 7 );
}
}
//============================ TIFFReader ==================================
class TIFFReader
{
private:
bool bStatus; // Whether until now no error occurred
Animation aAnimation;
sal_uLong nLastPercent;
SvStream* pTIFF; // the TIFF file that should be read
Bitmap aBitmap;
BitmapWriteAccess* pAcc;
sal_uInt16 nDstBitsPerPixel;
AlphaMask* pAlphaMask;
BitmapWriteAccess* pMaskAcc;
sal_uLong nOrigPos; // start position in pTIFF
sal_uLong nEndOfFile; // end of file position in pTIFF
sal_uInt16 nDataType;
// Data taken from the TIFF tags:
bool bByteSwap; // sal_True if bits 0..7 -> 7..0 should get converted ( FILLORDER = 2 );
sal_uLong nNewSubFile;
sal_uLong nSubFile;
sal_Int32 nImageWidth; // picture width in pixels
sal_Int32 nImageLength; // picture height in pixels
sal_uLong nBitsPerSample; // bits per pixel per layer
sal_uLong nCompression; // kind of compression
sal_uLong nPhotometricInterpretation;
sal_uLong nThresholding;
sal_uLong nCellWidth;
sal_uLong nCellLength;
sal_uLong nFillOrder;
sal_uLong* pStripOffsets; // field of offsets to the Bitmap-Data-"Strips"
sal_uLong nNumStripOffsets; // size of the field above
sal_uLong nOrientation;
sal_uLong nSamplesPerPixel; // number of layers
sal_uLong nRowsPerStrip; // if it's not compressed: number of rows per Strip
sal_uLong* pStripByteCounts; // if compressed (in a certain way): size of the strips
sal_uLong nNumStripByteCounts; // number of entries in the field above
sal_uLong nMinSampleValue;
sal_uLong nMaxSampleValue;
double fXResolution; // X-resolution or 0.0
double fYResolution; // Y-resolution or 0.0
sal_uLong nPlanarConfiguration;
sal_uLong nGroup3Options;
sal_uLong nGroup4Options;
sal_uLong nResolutionUnit; // unit of fX/YResolution: 1=unknown, 2(default)=inch, 3=cm
sal_uLong nPredictor;
sal_uLong* pColorMap; // color palette
sal_uLong nNumColors; // number of colors within the color palette
sal_uLong nPlanes; // number of layers within the Tiff file
sal_uLong nStripsPerPlane; // number of Strips per layer
sal_uLong nBytesPerRow; // Bytes per line per Layer in the Tiff file ( uncompressed )
sal_uInt8* pMap[ 4 ]; // temporary Scanline
sal_uLong DataTypeSize();
sal_uLong ReadIntData();
double ReadDoubleData();
void ReadHeader();
void ReadTagData( sal_uInt16 nTagType, sal_uInt32 nDataLen );
bool ReadMap();
// reads/decompresses the bitmap data and fills pMap
sal_uLong GetBits( const sal_uInt8 * pSrc, sal_uLong nBitsPos, sal_uLong nBitsCount );
// fetches BitsCount bits from pSrc[..] at the position nBitsPos
void MakePalCol();
// Create the bitmap from the temporary bitmap pMap
// and partly deletes pMap while doing this.
bool ConvertScanline(sal_Int32 nY);
// converts a Scanline to the Windows-BMP format
bool HasAlphaChannel() const;
public:
TIFFReader()
: bStatus(false)
, nLastPercent(0)
, pTIFF(nullptr)
, pAcc(nullptr)
, nDstBitsPerPixel(0)
, pAlphaMask(nullptr)
, pMaskAcc(nullptr)
, nOrigPos(0)
, nEndOfFile(0)
, nDataType(0)
, bByteSwap(false)
, nNewSubFile(0)
, nSubFile(0)
, nImageWidth(0)
, nImageLength(0)
, nBitsPerSample(1)
, nCompression(1)
, nPhotometricInterpretation(0)
, nThresholding(1)
, nCellWidth(1)
, nCellLength(1)
, nFillOrder(1)
, pStripOffsets(nullptr)
, nNumStripOffsets(0)
, nOrientation(1)
, nSamplesPerPixel(1)
, nRowsPerStrip(0xffffffff)
, pStripByteCounts(nullptr)
, nNumStripByteCounts(0)
, nMinSampleValue(0)
, nMaxSampleValue(0)
, fXResolution(0.0)
, fYResolution(0.0)
, nPlanarConfiguration(1)
, nGroup3Options(0)
, nGroup4Options(0)
, nResolutionUnit(2)
, nPredictor(0)
, pColorMap(nullptr)
, nNumColors(0)
, nPlanes(0)
, nStripsPerPlane(0)
, nBytesPerRow(0)
{
pMap[ 0 ] = pMap[ 1 ] = pMap[ 2 ] = pMap[ 3 ] = nullptr;
}
~TIFFReader()
{
delete pAlphaMask;
}
sal_uLong GetRowsPerStrip() const
{
//Rows Per Strip:
//
//(TIFF format only) The number of rows of pixels per strip to use for
//encoding the TIFF image. A value greater than zero specifies the
//number of rows per strip. A value of 0 sets the rows per strip equal
//to the image length, resulting in a single strip. A value of -1 (the
//default) sets the rows per strip equal to infinity, resulting in a
//single strip.
return nRowsPerStrip == 0 ? nImageLength : nRowsPerStrip;
}
bool ReadTIFF( SvStream & rTIFF, Graphic & rGraphic );
};
//=================== Methods of TIFFReader ==============================
sal_uLong TIFFReader::DataTypeSize()
{
sal_uLong nSize;
switch ( nDataType )
{
case 1 : // BYTE
case 2 : // ASCII
case 6 : // SIGNED Byte
case 7 : // UNDEFINED
nSize = 1;
break;
case 3 : // UINT16
case 8 : // INT16
nSize = 2;
break;
case 4 : // UINT32
case 9 : // INT32
case 11 : // FLOAT
nSize = 4;
break;
case 5 : // RATIONAL
case 10 : // SIGNED RATIONAL
case 12 : // DOUBLE
nSize = 8;
break;
default:
pTIFF->SetError(SVSTREAM_FILEFORMAT_ERROR);
nSize=1;
}
return nSize;
}
sal_uLong TIFFReader::ReadIntData()
{
double nDOUBLE(0.0);
float nFLOAT(0);
sal_uInt32 nUINT32a(0), nUINT32b(0);
sal_Int32 nINT32(0);
sal_uInt16 nUINT16(0);
sal_Int16 nINT16(0);
sal_uInt8 nBYTE(0);
char nCHAR(0);
switch( nDataType )
{
case 0 : //??
case 1 :
case 2 :
case 7 :
pTIFF->ReadUChar( nBYTE );
nUINT32a = (sal_uLong)nBYTE;
break;
case 3 :
pTIFF->ReadUInt16( nUINT16 );
nUINT32a = (sal_uLong)nUINT16;
break;
case 9 :
case 4 :
pTIFF->ReadUInt32( nUINT32a );
break;
case 5 :
pTIFF->ReadUInt32( nUINT32a ).ReadUInt32( nUINT32b );
if ( nUINT32b != 0 )
nUINT32a /= nUINT32b;
break;
case 6 :
pTIFF->ReadChar( nCHAR );
nUINT32a = (sal_Int32)nCHAR;
break;
case 8 :
pTIFF->ReadInt16( nINT16 );
nUINT32a = (sal_Int32)nINT16;
break;
case 10 :
pTIFF->ReadUInt32( nUINT32a ).ReadInt32( nINT32 );
if ( nINT32 != 0 )
nUINT32a /= nINT32;
break;
case 11 :
pTIFF->ReadFloat( nFLOAT );
nUINT32a = (sal_Int32)nFLOAT;
break;
case 12 :
pTIFF->ReadDouble( nDOUBLE );
nUINT32a = (sal_Int32)nDOUBLE;
break;
default:
pTIFF->ReadUInt32( nUINT32a );
break;
}
return nUINT32a;
}
double TIFFReader::ReadDoubleData()
{
double nd;
if ( nDataType == 5 )
{
sal_uInt32 nulong(0);
pTIFF->ReadUInt32( nulong );
nd = (double)nulong;
nulong = 0;
pTIFF->ReadUInt32( nulong );
if ( nulong != 0 )
nd /= (double)nulong;
}
else
nd = (double)ReadIntData();
return nd;
}
void TIFFReader::ReadTagData( sal_uInt16 nTagType, sal_uInt32 nDataLen)
{
if ( !bStatus )
return;
switch ( nTagType )
{
case 0x00fe: // New Sub File
nNewSubFile = ReadIntData();
SAL_INFO("filter.tiff","NewSubFile: " << nNewSubFile);
break;
case 0x00ff: // Sub File
nSubFile = ReadIntData();
SAL_INFO("filter.tiff","SubFile: " << nSubFile);
break;
case 0x0100: // Image Width
nImageWidth = ReadIntData();
SAL_INFO("filter.tiff","ImageWidth: " << nImageWidth);
break;
case 0x0101: // Image Length
nImageLength = ReadIntData();
SAL_INFO("filter.tiff","ImageLength: " << nImageLength);
break;
case 0x0102: // Bits Per Sample
nBitsPerSample = ReadIntData();
SAL_INFO("filter.tiff","BitsPerSample: " << nBitsPerSample);
if ( nBitsPerSample >= 32 ) // 32 bit and larger samples are not supported
bStatus = false;
break;
case 0x0103: // Compression
nCompression = ReadIntData();
SAL_INFO("filter.tiff","Compression: " << nCompression);
break;
case 0x0106: // Photometric Interpretation
nPhotometricInterpretation = ReadIntData();
SAL_INFO("filter.tiff","PhotometricInterpretation: " << nPhotometricInterpretation);
break;
case 0x0107: // Thresholding
nThresholding = ReadIntData();
SAL_INFO("filter.tiff","Thresholding: " << nThresholding);
break;
case 0x0108: // Cell Width
nCellWidth = ReadIntData();
break;
case 0x0109: // Cell Length
nCellLength = ReadIntData();
break;
case 0x010a: // Fill Order
nFillOrder = ReadIntData();
SAL_INFO("filter.tiff","FillOrder: " << nFillOrder);
break;
case 0x0111: { // Strip Offset(s)
sal_uLong nOldNumSO, i, * pOldSO;
pOldSO = pStripOffsets;
if ( pOldSO == nullptr )
nNumStripOffsets = 0;
nOldNumSO = nNumStripOffsets;
nDataLen += nOldNumSO;
size_t nMaxAllocAllowed = SAL_MAX_UINT32 / sizeof(sal_uInt32);
size_t nMaxRecordsAvailable = pTIFF->remainingSize() / DataTypeSize();
if (nDataLen > nOldNumSO && nDataLen < nMaxAllocAllowed &&
(nDataLen - nOldNumSO) <= nMaxRecordsAvailable)
{
nNumStripOffsets = nDataLen;
try
{
pStripOffsets = new sal_uLong[ nNumStripOffsets ];
}
catch (const std::bad_alloc &)
{
pStripOffsets = nullptr;
nNumStripOffsets = 0;
}
if ( pStripOffsets )
{
for ( i = 0; i < nOldNumSO; i++ )
pStripOffsets[ i ] = pOldSO[ i ] + nOrigPos;
for ( i = nOldNumSO; i < nNumStripOffsets; i++ )
pStripOffsets[ i ] = ReadIntData() + nOrigPos;
}
delete[] pOldSO;
}
SAL_INFO("filter.tiff","StripOffsets (Number:) " << nDataLen);
break;
}
case 0x0112: // Orientation
nOrientation = ReadIntData();
SAL_INFO("filter.tiff","Orientation: " << nOrientation);
break;
case 0x0115: // Samples Per Pixel
nSamplesPerPixel = ReadIntData();
SAL_INFO("filter.tiff","SamplesPerPixel: " << nSamplesPerPixel);
break;
case 0x0116: // Rows Per Strip
nRowsPerStrip = ReadIntData();
SAL_INFO("filter.tiff","RowsPerStrip: " << nRowsPerStrip);
break;
case 0x0117: { // Strip Byte Counts
sal_uLong nOldNumSBC, i, * pOldSBC;
pOldSBC = pStripByteCounts;
if ( pOldSBC == nullptr )
nNumStripByteCounts = 0; // to be on the safe side
nOldNumSBC = nNumStripByteCounts;
nDataLen += nOldNumSBC;
size_t nMaxAllocAllowed = SAL_MAX_UINT32 / sizeof(sal_uInt32);
size_t nMaxRecordsAvailable = pTIFF->remainingSize() / DataTypeSize();
if (nDataLen > nOldNumSBC && nDataLen < nMaxAllocAllowed &&
(nDataLen - nOldNumSBC) <= nMaxRecordsAvailable)
{
nNumStripByteCounts = nDataLen;
try
{
pStripByteCounts = new sal_uLong[ nNumStripByteCounts ];
}
catch (const std::bad_alloc &)
{
pStripByteCounts = nullptr;
nNumStripByteCounts = 0;
}
if ( pStripByteCounts )
{
for ( i = 0; i < nOldNumSBC; i++ )
pStripByteCounts[ i ] = pOldSBC[ i ];
for ( i = nOldNumSBC; i < nNumStripByteCounts; i++)
pStripByteCounts[ i ] = ReadIntData();
}
delete[] pOldSBC;
}
SAL_INFO("filter.tiff","StripByteCounts (Number:) " << nDataLen);
break;
}
case 0x0118: // Min Sample Value
nMinSampleValue = ReadIntData();
SAL_INFO("filter.tiff","MinSampleValue: " << nMinSampleValue);
break;
case 0x0119: // Max Sample Value
nMaxSampleValue = ReadIntData();
SAL_INFO("filter.tiff","MaxSampleValue: " << nMaxSampleValue);
break;
case 0x011a: // X Resolution
fXResolution = ReadDoubleData();
break;
case 0x011b: // Y Resolution
fYResolution = ReadDoubleData();
break;
case 0x011c: // Planar Configuration
nPlanarConfiguration = ReadIntData();
SAL_INFO("filter.tiff","PlanarConfiguration: " << nPlanarConfiguration);
break;
case 0x0124: // Group 3 Options
nGroup3Options = ReadIntData();
SAL_INFO("filter.tiff","Group3Options: " << nGroup3Options);
break;
case 0x0125: // Group 4 Options
nGroup4Options = ReadIntData();
SAL_INFO("filter.tiff","Group4Options: " << nGroup4Options);
break;
case 0x0128: // Resolution Unit
nResolutionUnit = ReadIntData();
break;
case 0x013d: // Predictor
nPredictor = ReadIntData();
SAL_INFO("filter.tiff","Predictor: " << nPredictor);
break;
case 0x0140: { // Color Map
sal_uInt16 nVal;
sal_uLong i;
nNumColors= ( (sal_uLong)1 << nBitsPerSample );
if ( nDataType == 3 && nNumColors <= 256)
{
pColorMap = new sal_uLong[ 256 ];
for ( i = 0; i < nNumColors; i++ )
pColorMap[ i ] = 0;
for ( i = 0; i < nNumColors; i++ )
{
pTIFF->ReadUInt16( nVal );
pColorMap[ i ] |= ( ( (sal_uLong)nVal ) << 8 ) & 0x00ff0000;
}
for ( i = 0; i < nNumColors; i++ )
{
pTIFF->ReadUInt16( nVal );
pColorMap[ i ] |= ( (sal_uLong)nVal ) & 0x0000ff00;
}
for ( i = 0; i < nNumColors; i++ )
{
pTIFF->ReadUInt16( nVal );
pColorMap[ i ] |= ( ( (sal_uLong)nVal ) >> 8 ) & 0x000000ff;
}
}
else
bStatus = false;
SAL_INFO("filter.tiff","ColorMap (number of colors): " << nNumColors);
break;
}
case 0x0153: { // SampleFormat
sal_uLong nSampleFormat = ReadIntData();
if ( nSampleFormat == 3 ) // IEEE floating point samples are not supported yet
bStatus = false;
break;
}
}
if ( pTIFF->GetError() )
bStatus = false;
}
bool TIFFReader::ReadMap()
{
if ( nCompression == 1 || nCompression == 32771 )
{
sal_uLong nStrip, nStripBytesPerRow;
if ( nCompression == 1 )
nStripBytesPerRow = nBytesPerRow;
else
nStripBytesPerRow = ( nBytesPerRow + 1 ) & 0xfffffffe;
for (sal_Int32 ny = 0; ny < nImageLength; ++ny)
{
for (sal_uLong np = 0; np < nPlanes; ++np)
{
nStrip = ny / GetRowsPerStrip() + np * nStripsPerPlane;
if ( nStrip >= nNumStripOffsets )
return false;
pTIFF->Seek( pStripOffsets[ nStrip ] + ( ny % GetRowsPerStrip() ) * nStripBytesPerRow );
if (np >= SAL_N_ELEMENTS(pMap))
return false;
pTIFF->Read( pMap[ np ], nBytesPerRow );
if (!pTIFF->good())
return false;
}
if ( !ConvertScanline( ny ) )
return false;
}
}
else if ( nCompression == 2 || nCompression == 3 || nCompression == 4 )
{
sal_uLong nStrip, nOptions;
if ( nCompression == 2 )
{
nOptions = CCI_OPTION_BYTEALIGNROW;
}
else if ( nCompression == 3 )
{
nOptions = CCI_OPTION_EOL;
if ( nGroup3Options & 0x00000001 )
nOptions |= CCI_OPTION_2D;
if ( nGroup3Options & 0x00000004 )
nOptions |= CCI_OPTION_BYTEALIGNEOL;
if ( nGroup3Options & 0xfffffffa )
return false;
}
else
{ // nCompression==4
nOptions = CCI_OPTION_2D;
if ( nGroup4Options & 0xffffffff )
return false;
}
if ( nFillOrder == 2 )
{
nOptions |= CCI_OPTION_INVERSEBITORDER;
bByteSwap = false;
}
nStrip = 0;
if ( nStrip >= nNumStripOffsets )
return false;
sal_uLong nOffset = pStripOffsets[nStrip];
if (nOffset > nEndOfFile)
return false;
pTIFF->Seek(pStripOffsets[nStrip]);
CCIDecompressor aCCIDecom( nOptions, nImageWidth );
aCCIDecom.StartDecompression( *pTIFF );
for (sal_Int32 ny = 0; ny < nImageLength; ++ny)
{
for (sal_uLong np = 0; np < nPlanes; np++ )
{
if ( ny / GetRowsPerStrip() + np * nStripsPerPlane > nStrip )
{
nStrip=ny/GetRowsPerStrip()+np*nStripsPerPlane;
if ( nStrip >= nNumStripOffsets )
return false;
nOffset = pStripOffsets[nStrip];
if (nOffset > nEndOfFile)
return false;
pTIFF->Seek(nOffset);
aCCIDecom.StartDecompression( *pTIFF );
}
if (np >= SAL_N_ELEMENTS(pMap))
return false;
if ( !aCCIDecom.DecompressScanline( pMap[ np ], nImageWidth * nBitsPerSample * nSamplesPerPixel / nPlanes, np + 1 == nPlanes ) )
return false;
if ( pTIFF->GetError() )
return false;
}
if ( !ConvertScanline( ny ) )
return false;
}
}
else if ( nCompression == 5 )
{
LZWDecompressor aLZWDecom;
sal_uLong nStrip;
nStrip=0;
if ( nStrip >= nNumStripOffsets )
return false;
pTIFF->Seek(pStripOffsets[nStrip]);
aLZWDecom.StartDecompression(*pTIFF);
for (sal_Int32 ny = 0; ny < nImageLength; ++ny)
{
for (sal_uLong np = 0; np < nPlanes; ++np)
{
if ( ny / GetRowsPerStrip() + np * nStripsPerPlane > nStrip )
{
nStrip = ny / GetRowsPerStrip() + np * nStripsPerPlane;
if ( nStrip >= nNumStripOffsets )
return false;
pTIFF->Seek(pStripOffsets[nStrip]);
aLZWDecom.StartDecompression(*pTIFF);
}
if (np >= SAL_N_ELEMENTS(pMap))
return false;
if ( ( aLZWDecom.Decompress( pMap[ np ], nBytesPerRow ) != nBytesPerRow ) || pTIFF->GetError() )
return false;
}
if ( !ConvertScanline( ny ) )
return false;
}
}
else if ( nCompression == 32773 )
{
sal_uLong nStrip,nRecCount,i;
sal_uInt8 * pdst;
nStrip = 0;
if ( nStrip >= nNumStripOffsets )
return false;
pTIFF->Seek(pStripOffsets[nStrip]);
for (sal_Int32 ny = 0; ny < nImageLength; ++ny)
{
for (sal_uLong np = 0; np < nPlanes; ++np)
{
if ( ny / GetRowsPerStrip() + np * nStripsPerPlane > nStrip )
{
nStrip=ny/GetRowsPerStrip()+np*nStripsPerPlane;
if ( nStrip >= nNumStripOffsets )
return false;
pTIFF->Seek(pStripOffsets[nStrip]);
}
sal_uLong nRowBytesLeft = nBytesPerRow;
if (np >= SAL_N_ELEMENTS(pMap))
return false;
pdst=pMap[ np ];
do
{
sal_uInt8 nRecHeader(0);
pTIFF->ReadUChar( nRecHeader );
if ((nRecHeader&0x80)==0)
{
nRecCount=0x00000001+((sal_uLong)nRecHeader);
if ( nRecCount > nRowBytesLeft )
return false;
pTIFF->Read(pdst,nRecCount);
if (!pTIFF->good())
return false;
pdst+=nRecCount;
nRowBytesLeft-=nRecCount;
}
else if ( nRecHeader != 0x80 )
{
nRecCount = 0x000000101 - ( (sal_uLong)nRecHeader );
if ( nRecCount > nRowBytesLeft )
{
nRecCount = nRowBytesLeft;
// bStatus = sal_False;
// return;
}
sal_uInt8 nRecData(0);
pTIFF->ReadUChar( nRecData );
for ( i = 0; i < nRecCount; i++ )
*(pdst++) = nRecData;
nRowBytesLeft -= nRecCount;
}
} while ( nRowBytesLeft != 0 );
if ( pTIFF->GetError() )
return false;
}
if ( !ConvertScanline( ny ) )
return false;
}
}
else
return false;
return true;
}
sal_uLong TIFFReader::GetBits( const sal_uInt8 * pSrc, sal_uLong nBitsPos, sal_uLong nBitsCount )
{
sal_uLong nRes;
if ( bByteSwap )
{
pSrc += ( nBitsPos >> 3 );
nBitsPos &= 7;
sal_uInt8 nDat = *pSrc;
nRes = (sal_uLong)( BYTESWAP( nDat ) & ( 0xff >> nBitsPos ) );
if ( nBitsCount <= 8 - nBitsPos )
{
nRes >>= ( 8 - nBitsPos - nBitsCount );
}
else
{
pSrc++;
nBitsCount -= 8 - nBitsPos;
while ( nBitsCount >= 8 )
{
nDat = *(pSrc++);
nRes = ( nRes << 8 ) | ((sal_uLong)BYTESWAP( nDat ) );
nBitsCount -= 8;
}
if ( nBitsCount > 0 )
{
nDat = *pSrc;
nRes = ( nRes << nBitsCount ) | (((sal_uLong)BYTESWAP(nDat))>>(8-nBitsCount));
}
}
}
else
{
pSrc += ( nBitsPos >> 3 );
nBitsPos &= 7;
nRes = (sal_uLong)((*pSrc)&(0xff>>nBitsPos));
if ( nBitsCount <= 8 - nBitsPos )
{
nRes >>= ( 8 - nBitsPos - nBitsCount );
}
else
{
pSrc++;
nBitsCount -= 8 - nBitsPos;
while ( nBitsCount >= 8 )
{
nRes = ( nRes << 8 ) | ((sal_uLong)*(pSrc++));
nBitsCount -= 8;
}
if ( nBitsCount > 0 )
nRes = ( nRes << nBitsCount ) | (((sal_uLong)*pSrc)>>(8-nBitsCount));
}
}
return nRes;
}
bool TIFFReader::ConvertScanline(sal_Int32 nY)
{
sal_uInt32 nRed, nGreen, nBlue, ns, nVal, nByteCount;
sal_uInt8 nByteVal;
if ( nDstBitsPerPixel == 24 )
{
if ( nBitsPerSample == 8 && nSamplesPerPixel >= 3 &&
nPlanes == 1 && nPhotometricInterpretation == 2 )
{
sal_uInt8* pt = pMap[ 0 ];
// are the values being saved as difference?
if ( 2 == nPredictor )
{
sal_uInt8 nLRed = 0;
sal_uInt8 nLGreen = 0;
sal_uInt8 nLBlue = 0;
sal_uInt8 nLAlpha = 0;
for (sal_Int32 nx = 0; nx < nImageWidth; nx++, pt += nSamplesPerPixel)
{
nLRed = nLRed + pt[ 0 ];
nLGreen = nLGreen + pt[ 1 ];
nLBlue = nLBlue + pt[ 2 ];
pAcc->SetPixel( nY, nx, Color( nLRed, nLGreen, nLBlue ) );
if (nSamplesPerPixel >= 4 && pMaskAcc)
{
nLAlpha = nLAlpha + pt[ 3 ];
pMaskAcc->SetPixel( nY, nx, BitmapColor(~nLAlpha) );
}
}
}
else
{
for (sal_Int32 nx = 0; nx < nImageWidth; nx++, pt += nSamplesPerPixel)
{
pAcc->SetPixel( nY, nx, Color( pt[0], pt[1], pt[2] ) );
if (nSamplesPerPixel >= 4 && pMaskAcc)
{
sal_uInt8 nAlpha = pt[3];
pMaskAcc->SetPixel( nY, nx, BitmapColor(~nAlpha) );
}
}
}
}
else if ( nPhotometricInterpretation == 2 && nSamplesPerPixel >= 3 )
{
if ( nMaxSampleValue > nMinSampleValue )
{
sal_uLong nMinMax = nMinSampleValue * 255 / ( nMaxSampleValue - nMinSampleValue );
for (sal_Int32 nx = 0; nx < nImageWidth; ++nx)
{
if ( nPlanes < 3 )
{
nRed = GetBits( pMap[ 0 ], ( nx * nSamplesPerPixel + 0 ) * nBitsPerSample, nBitsPerSample );
nGreen = GetBits( pMap[ 1 ], ( nx * nSamplesPerPixel + 1 ) * nBitsPerSample, nBitsPerSample );
nBlue = GetBits( pMap[ 2 ], ( nx * nSamplesPerPixel + 2 ) * nBitsPerSample, nBitsPerSample );
}
else
{
nRed = GetBits( pMap[ 0 ], nx * nBitsPerSample, nBitsPerSample );
nGreen = GetBits( pMap[ 1 ], nx * nBitsPerSample, nBitsPerSample );
nBlue = GetBits( pMap[ 2 ], nx * nBitsPerSample, nBitsPerSample );
}
pAcc->SetPixel( nY, nx, Color( (sal_uInt8)( nRed - nMinMax ), (sal_uInt8)( nGreen - nMinMax ), (sal_uInt8)(nBlue - nMinMax) ) );
}
}
}
else if ( nPhotometricInterpretation == 5 && nSamplesPerPixel == 3 )
{
if ( nMaxSampleValue > nMinSampleValue )
{
sal_uLong nMinMax = nMinSampleValue * 255 / ( nMaxSampleValue - nMinSampleValue );
for (sal_Int32 nx = 0; nx < nImageWidth; ++nx)
{
if ( nPlanes < 3 )
{
nRed = GetBits( pMap[ 0 ],( nx * nSamplesPerPixel + 0 ) * nBitsPerSample, nBitsPerSample );
nGreen = GetBits( pMap[ 0 ],( nx * nSamplesPerPixel + 1 ) * nBitsPerSample, nBitsPerSample );
nBlue = GetBits( pMap[ 0 ],( nx * nSamplesPerPixel + 2 ) * nBitsPerSample, nBitsPerSample );
}
else
{
nRed = GetBits( pMap[ 0 ], nx * nBitsPerSample, nBitsPerSample );
nGreen = GetBits( pMap[ 1 ], nx * nBitsPerSample, nBitsPerSample );
nBlue = GetBits( pMap[ 2 ], nx * nBitsPerSample, nBitsPerSample );
}
nRed = 255 - (sal_uInt8)( nRed - nMinMax );
nGreen = 255 - (sal_uInt8)( nGreen - nMinMax );
nBlue = 255 - (sal_uInt8)( nBlue - nMinMax );
pAcc->SetPixel( nY, nx, Color( (sal_uInt8) nRed, (sal_uInt8) nGreen, (sal_uInt8) nBlue ) );
}
}
}
else if( nPhotometricInterpretation == 5 && nSamplesPerPixel == 4 )
{
if ( nMaxSampleValue > nMinSampleValue )
{
sal_uInt8 nSamp[ 4 ];
sal_uInt8 nSampLast[ 4 ] = { 0, 0, 0, 0 };
for(sal_Int32 nx = 0; nx < nImageWidth; ++nx)
{
// are the values being saved as difference?
if( 2 == nPredictor )
{
for( ns = 0; ns < 4; ns++ )
{
if( nPlanes < 3 )
nSampLast[ ns ] = nSampLast[ ns ] + (sal_uInt8) GetBits( pMap[ 0 ], ( nx * nSamplesPerPixel + ns ) * nBitsPerSample, nBitsPerSample );
else
nSampLast[ ns ] = nSampLast[ ns ] + (sal_uInt8) GetBits( pMap[ ns ], nx * nBitsPerSample, nBitsPerSample );
nSamp[ ns ] = nSampLast[ ns ];
}
}
else
{
for( ns = 0; ns < 4; ns++ )
{
if( nPlanes < 3 )
nSamp[ ns ] = (sal_uInt8) GetBits( pMap[ 0 ], ( nx * nSamplesPerPixel + ns ) * nBitsPerSample, nBitsPerSample );
else
nSamp[ ns ]= (sal_uInt8) GetBits( pMap[ ns ], nx * nBitsPerSample, nBitsPerSample );
}
}
const long nBlack = nSamp[ 3 ];
nRed = (sal_uInt8) std::max( 0L, 255L - ( ( (long) nSamp[ 0 ] + nBlack - ( ( (long) nMinSampleValue ) << 1 ) ) *
255L/(long)(nMaxSampleValue-nMinSampleValue) ) );
nGreen = (sal_uInt8) std::max( 0L, 255L - ( ( (long) nSamp[ 1 ] + nBlack - ( ( (long) nMinSampleValue ) << 1 ) ) *
255L/(long)(nMaxSampleValue-nMinSampleValue) ) );
nBlue = (sal_uInt8) std::max( 0L, 255L - ( ( (long) nSamp[ 2 ] + nBlack - ( ( (long) nMinSampleValue ) << 1 ) ) *
255L/(long)(nMaxSampleValue-nMinSampleValue) ) );
pAcc->SetPixel( nY, nx, Color ( (sal_uInt8)nRed, (sal_uInt8)nGreen, (sal_uInt8)nBlue ) );
}
}
}
}
else if ( nSamplesPerPixel == 1 && ( nPhotometricInterpretation <= 1 || nPhotometricInterpretation == 3 ) )
{
if ( nMaxSampleValue > nMinSampleValue )
{
sal_uLong nMinMax = ( ( 1 << nDstBitsPerPixel ) - 1 ) / ( nMaxSampleValue - nMinSampleValue );
sal_uInt8* pt = pMap[ 0 ];
sal_uInt8 nShift;
switch ( nDstBitsPerPixel )
{
case 8 :
{
if ( bByteSwap )
{
if ( nPredictor == 2 )
{
sal_uInt8 nLast = 0;
for (sal_Int32 nx = 0; nx < nImageWidth; ++nx)
{
nLast += nx == 0 ? BYTESWAP( (sal_uInt8)*pt++ ) : *pt++;
pAcc->SetPixelIndex( nY, nx, nLast );
}
}
else
{
for (sal_Int32 nx = 0; nx < nImageWidth; ++nx)
{
sal_uInt8 nLast = *pt++;
pAcc->SetPixelIndex( nY, nx, static_cast<sal_uInt8>( (BYTESWAP((sal_uLong)nLast) - nMinSampleValue) * nMinMax ) );
}
}
}
else
{
if ( nPredictor == 2 )
{
sal_uInt8 nLast = 0;
for (sal_Int32 nx = 0; nx < nImageWidth; ++nx)
{
nLast += *pt++;
pAcc->SetPixelIndex( nY, nx, nLast );
}
}
else
{
for (sal_Int32 nx = 0; nx < nImageWidth; ++nx)
{
pAcc->SetPixelIndex( nY, nx, static_cast<sal_uInt8>( ((sal_uLong)*pt++ - nMinSampleValue) * nMinMax ) );
}
}
}
}
break;
case 7 :
case 6 :
case 5 :
case 4 :
case 3 :
case 2 :
{
for (sal_Int32 nx = 0; nx < nImageWidth; ++nx)
{
nVal = ( GetBits( pt, nx * nBitsPerSample, nBitsPerSample ) - nMinSampleValue ) * nMinMax;
pAcc->SetPixelIndex( nY, nx, static_cast<sal_uInt8>(nVal));
}
}
break;
case 1 :
{
if ( bByteSwap )
{
sal_Int32 nx = 0;
nByteCount = ( nImageWidth >> 3 ) + 1;
while ( --nByteCount )
{
nByteVal = *pt++;
pAcc->SetPixelIndex( nY, nx++, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, nx++, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, nx++, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, nx++, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, nx++, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, nx++, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, nx++, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, nx++, nByteVal );
}
if ( nImageWidth & 7 )
{
nByteVal = *pt++;
while ( nx < nImageWidth )
{
pAcc->SetPixelIndex( nY, nx++, nByteVal & 1 );
nByteVal >>= 1;
}
}
}
else
{
sal_Int32 nx = 7;
nByteCount = ( nImageWidth >> 3 ) + 1;
while ( --nByteCount )
{
nByteVal = *pt++;
pAcc->SetPixelIndex( nY, nx, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, --nx, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, --nx, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, --nx, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, --nx, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, --nx, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, --nx, nByteVal & 1 );
nByteVal >>= 1;
pAcc->SetPixelIndex( nY, --nx, nByteVal );
nx += 15;
}
if ( nImageWidth & 7 )
{
nx -= 7;
nByteVal = *pt++;
nShift = 7;
while ( nx < nImageWidth )
{
pAcc->SetPixelIndex( nY, nx++, ( nByteVal >> nShift ) & 1);
}
}
}
}
break;
default :
return false;
}
}
}
else if ( ( nSamplesPerPixel == 2 ) && ( nBitsPerSample == 8 ) &&
( nPlanarConfiguration == 1 ) && ( pColorMap == nullptr ) ) // grayscale
{
if ( nMaxSampleValue > nMinSampleValue )
{
sal_uLong nMinMax = ( ( 1 << 8 /*nDstBitsPerPixel*/ ) - 1 ) / ( nMaxSampleValue - nMinSampleValue );
sal_uInt8* pt = pMap[ 0 ];
for (sal_Int32 nx = 0; nx < nImageWidth; nx++, pt += 2 )
{
pAcc->SetPixelIndex( nY, nx, static_cast<sal_uInt8>( ((sal_uLong)*pt - nMinSampleValue) * nMinMax) );
}
}
}
else
return false;
return true;
}
void TIFFReader::MakePalCol()
{
if ( nDstBitsPerPixel <= 8 )
{
sal_uLong i, nVal, n0RGB;
if ( pColorMap == nullptr )
pColorMap = new sal_uLong[ 256 ];
if ( nPhotometricInterpretation <= 1 )
{
nNumColors = (sal_uLong)1 << nBitsPerSample;
if ( nNumColors > 256 )
nNumColors = 256;
pAcc->SetPaletteEntryCount( (sal_uInt16)nNumColors );
for ( i = 0; i < nNumColors; i++ )
{
nVal = ( i * 255 / ( nNumColors - 1 ) ) & 0xff;
n0RGB = nVal | ( nVal << 8 ) | ( nVal << 16 );
if ( nPhotometricInterpretation == 1 )
pColorMap[ i ] = n0RGB;
else
pColorMap[ nNumColors - i - 1 ] = n0RGB;
}
}
for ( i = 0; i < nNumColors; i++ )
{
pAcc->SetPaletteColor( (sal_uInt16)i, BitmapColor( (sal_uInt8)( pColorMap[ i ] >> 16 ),
(sal_uInt8)( pColorMap[ i ] >> 8 ), (sal_uInt8)pColorMap[ i ] ) );
}
}
if ( fXResolution > 1.0 && fYResolution > 1.0 && ( nResolutionUnit == 2 || nResolutionUnit == 3 ) )
{
sal_uLong nRX,nRY;
if (nResolutionUnit==2)
{
nRX=(sal_uLong)(fXResolution+0.5);
nRY=(sal_uLong)(fYResolution+0.5);
}
else
{
nRX=(sal_uLong)(fXResolution*2.54+0.5);
nRY=(sal_uLong)(fYResolution*2.54+0.5);
}
MapMode aMapMode(MAP_INCH,Point(0,0),Fraction(1,nRX),Fraction(1,nRY));
aBitmap.SetPrefMapMode(aMapMode);
aBitmap.SetPrefSize(Size(nImageWidth,nImageLength));
}
}
void TIFFReader::ReadHeader()
{
sal_uInt8 nbyte1(0), nbyte2(0);
sal_uInt16 nushort(0);
pTIFF->ReadUChar( nbyte1 );
if ( nbyte1 == 'I' )
pTIFF->SetEndian( SvStreamEndian::LITTLE );
else
pTIFF->SetEndian( SvStreamEndian::BIG );
pTIFF->ReadUChar( nbyte2 ).ReadUInt16( nushort );
if ( nbyte1 != nbyte2 || ( nbyte1 != 'I' && nbyte1 != 'M' ) || nushort != 0x002a )
bStatus = false;
}
bool TIFFReader::HasAlphaChannel() const
{
/*There are undoubtedly more variants we could support, but keep it simple for now*/
return (
nDstBitsPerPixel == 24 &&
nBitsPerSample == 8 &&
nSamplesPerPixel >= 4 &&
nPlanes == 1 &&
nPhotometricInterpretation == 2
);
}
bool TIFFReader::ReadTIFF(SvStream & rTIFF, Graphic & rGraphic )
{
sal_uInt16 i, nNumTags(0), nTagType(0);
sal_uInt64 nMaxPos;
sal_uLong nPos;
sal_uInt32 nFirstIfd(0), nDataLen;
bStatus = true;
nLastPercent = 0;
pTIFF = &rTIFF;
nMaxPos = nOrigPos = pTIFF->Tell();
nEndOfFile = nOrigPos + pTIFF->remainingSize();
// number format of pTIFF at the beginning
SvStreamEndian nOrigNumberFormat = pTIFF->GetEndian();
// read header:
ReadHeader();
// read first IFD:
pTIFF->ReadUInt32( nFirstIfd );
if( !nFirstIfd || pTIFF->GetError() )
bStatus = false;
if ( bStatus )
{
sal_uInt32 nOffset = nFirstIfd;
std::vector<sal_uInt32> aSeenOffsets;
// calculate length of TIFF file
do
{
if (std::find(aSeenOffsets.begin(), aSeenOffsets.end(), nOffset) != aSeenOffsets.end())
{
SAL_WARN("filter.tiff", "Parsing error: " << nOffset <<
" already processed, format loop");
bStatus = false;
break;
}
pTIFF->Seek(nOrigPos + nOffset);
aSeenOffsets.push_back(nOffset);
if( pTIFF->GetError() )
{
pTIFF->ResetError();
break;
};
nMaxPos = std::max( pTIFF->Tell(), nMaxPos );
pTIFF->ReadUInt16( nNumTags );
// loop through tags:
for( i = 0; i < nNumTags; i++ )
{
nTagType = 0;
nDataType = USHRT_MAX;
nDataLen = 0;
nOffset = 0;
pTIFF->ReadUInt16( nTagType ).ReadUInt16( nDataType ).ReadUInt32( nDataLen ).ReadUInt32( nOffset );
if( DataTypeSize() * nDataLen > 4 )
nMaxPos = std::max( (sal_uInt64) nOrigPos + nOffset + DataTypeSize() * nDataLen, nMaxPos );
}
pTIFF->ReadUInt32( nOffset );
if ( pTIFF->IsEof() )
nOffset = 0;
nMaxPos = std::max( pTIFF->Tell(), nMaxPos );
if ( !nOffset )
nMaxPos = std::max( pTIFF->Tell(), nMaxPos );
}
while( nOffset );
std::vector<sal_uInt32> aSeenIfds;
for ( sal_uInt32 nNextIfd = nFirstIfd; nNextIfd && bStatus; )
{
if (std::find(aSeenIfds.begin(), aSeenIfds.end(), nNextIfd) != aSeenIfds.end())
{
SAL_WARN("filter.tiff", "Parsing error: " << nNextIfd <<
" already processed, format loop");
bStatus = false;
break;
}
pTIFF->Seek(nOrigPos + nNextIfd);
aSeenIfds.push_back(nNextIfd);
{
bByteSwap = false;
nNewSubFile = 0;
nSubFile = 0;
nImageWidth = 0;
nImageLength = 0;
nBitsPerSample = 1; // default value according to the documentation
nCompression = 1;
nPhotometricInterpretation = 0;
nThresholding = 1; // default value according to the documentation
nCellWidth = 1;
nCellLength = 1;
nFillOrder = 1; // default value according to the documentation
nNumStripOffsets = 0;
nOrientation = 1;
nSamplesPerPixel = 1; // default value according to the documentation
nRowsPerStrip = 0xffffffff; // default value according to the documentation
nNumStripByteCounts = 0;
nMinSampleValue = 0; // default value according to the documentation
nMaxSampleValue = 0;
fXResolution = 0.0;
fYResolution = 0.0;
nPlanarConfiguration = 1;
nGroup3Options = 0; // default value according to the documentation
nGroup4Options = 0; // default value according to the documentation
nResolutionUnit = 2; // default value according to the documentation
nPredictor = 1;
nNumColors = 0;
pAcc = nullptr;
pColorMap = nullptr;
pStripOffsets = nullptr;
pStripByteCounts = nullptr;
pMap[ 0 ] = pMap[ 1 ] = pMap[ 2 ] = pMap[ 3 ] = nullptr;
pTIFF->ReadUInt16( nNumTags );
nPos = pTIFF->Tell();
const size_t nMinRecordSize = 8;
const size_t nMaxRecords = pTIFF->remainingSize() / nMinRecordSize;
if (nNumTags > nMaxRecords)
{
SAL_WARN("filter.tiff", "Parsing error: " << nMaxRecords <<
" max possible entries, but " << nNumTags << " claimed, truncating");
nNumTags = nMaxRecords;
}
// Schleife ueber Tags:
for( i = 0; i < nNumTags; i++ )
{
pTIFF->ReadUInt16( nTagType ).ReadUInt16( nDataType ).ReadUInt32( nDataLen );
if( DataTypeSize() * nDataLen > 4 )
{
pTIFF->ReadUInt32( nOffset );
pTIFF->Seek( nOrigPos + nOffset );
}
ReadTagData( nTagType, nDataLen );
nPos += 12; pTIFF->Seek( nPos );
if ( pTIFF->GetError() )
bStatus = false;
if ( !bStatus )
break;
}
pTIFF->ReadUInt32( nNextIfd );
if ( pTIFF->IsEof() )
nNextIfd = 0;
}
if ( !nBitsPerSample || ( nBitsPerSample > 32 ) )
bStatus = false;
if (nImageWidth < 0 || nImageLength < 0)
bStatus = false;
if ( bStatus )
{
if ( nMaxSampleValue == 0 )
{
if ( nBitsPerSample == 32 ) // sj: i93300, compiler bug, 1 << 32 gives 1 one 32bit windows platforms,
nMaxSampleValue = 0xffffffff; // (up from 80286 only the lower 5 bits are used when shifting a 32bit register)
else
nMaxSampleValue = ( 1 << nBitsPerSample ) - 1;
}
if ( nPhotometricInterpretation == 2 || nPhotometricInterpretation == 5 || nPhotometricInterpretation == 6 )
nDstBitsPerPixel = 24;
else if ( nBitsPerSample*nSamplesPerPixel <= 1 )
nDstBitsPerPixel = 1;
else if ( nBitsPerSample*nSamplesPerPixel <= 4 )
nDstBitsPerPixel = 4;
else
nDstBitsPerPixel = 8;
Size aTargetSize( nImageWidth, nImageLength );
aBitmap = Bitmap( aTargetSize, nDstBitsPerPixel );
pAcc = aBitmap.AcquireWriteAccess();
if (pAcc && pAcc->Width() == nImageWidth && pAcc->Height() == nImageLength)
{
if ( nPlanarConfiguration == 1 )
nPlanes = 1;
else
nPlanes = nSamplesPerPixel;
if ( ( nFillOrder == 2 ) && ( nCompression != 5 ) ) // in the LZW mode bits are already being inverted
bByteSwap = true;
nStripsPerPlane = ( nImageLength - 1 ) / GetRowsPerStrip() + 1;
bStatus = nPlanes != 0;
if (bStatus)
{
nBytesPerRow = ( nImageWidth * nSamplesPerPixel / nPlanes * nBitsPerSample + 7 ) >> 3;
for ( sal_uLong j = 0; j < 4; j++ )
{
try
{
pMap[ j ] = new sal_uInt8[ nBytesPerRow ];
}
catch (const std::bad_alloc &)
{
pMap[ j ] = nullptr;
bStatus = false;
break;
}
}
}
if (bStatus && HasAlphaChannel())
{
pAlphaMask = new AlphaMask( aTargetSize );
pMaskAcc = pAlphaMask->AcquireWriteAccess();
}
if (bStatus && ReadMap())
{
nMaxPos = std::max( pTIFF->Tell(), nMaxPos );
MakePalCol();
nMaxPos = std::max( pTIFF->Tell(), nMaxPos );
}
else
bStatus = false;
if( pAcc )
{
Bitmap::ReleaseAccess( pAcc );
if ( pMaskAcc )
{
if ( pAlphaMask )
pAlphaMask->ReleaseAccess( pMaskAcc );
pMaskAcc = nullptr;
}
if ( bStatus )
{
BitmapEx aImage;
if (pAlphaMask)
aImage = BitmapEx( aBitmap, *pAlphaMask );
else
aImage = aBitmap;
AnimationBitmap aAnimationBitmap( aImage, Point( 0, 0 ), aBitmap.GetSizePixel(),
ANIMATION_TIMEOUT_ON_CLICK, DISPOSE_BACK );
aAnimation.Insert( aAnimationBitmap );
}
}
}
}
// Clean up:
for ( i = 0; i < 4; i++ )
delete[] pMap[ i ];
delete[] pColorMap;
delete[] pStripOffsets;
delete[] pStripByteCounts;
}
}
// seek to end of TIFF if succeeded
pTIFF->SetEndian( nOrigNumberFormat );
pTIFF->Seek( bStatus ? nMaxPos : nOrigPos );
if ( aAnimation.Count() )
{
if ( aAnimation.Count() == 1 )
rGraphic = aAnimation.GetBitmapEx();
else
rGraphic = aAnimation; //aBitmap;
return true;
}
else
return false;
}
//================== GraphicImport - the exported function ================
extern "C" SAL_DLLPUBLIC_EXPORT bool SAL_CALL
itiGraphicImport( SvStream & rStream, Graphic & rGraphic, FilterConfigItem* )
{
TIFFReader aTIFFReader;
return aTIFFReader.ReadTIFF( rStream, rGraphic );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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