diff options
| -rw-r--r-- | filter/source/graphicfilter/itiff/itiff.cxx | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/filter/source/graphicfilter/itiff/itiff.cxx b/filter/source/graphicfilter/itiff/itiff.cxx index 19ab6c7f3527..1582a11773b7 100644 --- a/filter/source/graphicfilter/itiff/itiff.cxx +++ b/filter/source/graphicfilter/itiff/itiff.cxx @@ -927,23 +927,22 @@ bool TIFFReader::ConvertScanline( sal_uLong nY ) { case 8 : { - sal_uInt8 nLast; if ( bByteSwap ) { if ( nPredictor == 2 ) { - nLast = BYTESWAP( (sal_uInt8)*pt++ ); + sal_uInt8 nLast = 0; for ( nx = 0; nx < nImageWidth; nx++ ) { + nLast += nx == 0 ? BYTESWAP( (sal_uInt8)*pt++ ) : *pt++; pAcc->SetPixelIndex( nY, nx, nLast ); - nLast = nLast + *pt++; } } else { for ( nx = 0; nx < nImageWidth; nx++ ) { - nLast = *pt++; + sal_uInt8 nLast = *pt++; pAcc->SetPixelIndex( nY, nx, static_cast<sal_uInt8>( (BYTESWAP((sal_uLong)nLast) - nMinSampleValue) * nMinMax ) ); } } @@ -952,11 +951,11 @@ bool TIFFReader::ConvertScanline( sal_uLong nY ) { if ( nPredictor == 2 ) { - nLast = *pt++; + sal_uInt8 nLast = 0; for ( nx = 0; nx < nImageWidth; nx++ ) { + nLast += *pt++; pAcc->SetPixelIndex( nY, nx, nLast ); - nLast = nLast + *pt++; } } else |