/* This file is (c) 2014 Abs62 * Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */ #ifdef MAKE_EXTRA_TIFF_HANDLER #include "tiff.hh" #if defined (Q_OS_MAC) || defined (Q_OS_WIN) #include "tiff/tiff.h" #include "tiff/tiffio.h" #else #include "tiff.h" #include "tiffio.h" #endif #include <QBuffer> namespace GdTiff { tsize_t tiffReadProc( thandle_t fd, tdata_t buf, tsize_t size ) { return static_cast< QIODevice * >( fd )->read( static_cast< char * >( buf ), size ); } tsize_t tiffWriteProc( thandle_t fd, tdata_t buf, tsize_t size ) { Q_UNUSED( fd ) Q_UNUSED( buf ) Q_UNUSED( size ) return 0; } toff_t tiffSeekProc( thandle_t fd, toff_t off, int whence ) { QIODevice * device = static_cast< QIODevice * >( fd ); switch (whence) { case SEEK_SET: device->seek( off ); break; case SEEK_CUR: device->seek( device->pos() + off ); break; case SEEK_END: device->seek( device->size() + off ); break; } return device->pos(); } int tiffCloseProc( thandle_t fd ) { Q_UNUSED( fd ) return 0; } toff_t tiffSizeProc( thandle_t fd ) { return static_cast< QIODevice * >( fd )->size(); } int tiffMapProc( thandle_t fd, tdata_t * pbase, toff_t * psize ) { Q_UNUSED( fd ) Q_UNUSED( pbase ) Q_UNUSED( psize ) return 0; } void tiffUnmapProc( thandle_t fd, tdata_t base, toff_t size ) { Q_UNUSED( fd ) Q_UNUSED( base ) Q_UNUSED( size ) } bool tiffToQImage( const char * data, int size, QImage & image ) { QByteArray arr = QByteArray::fromRawData( data, size ); QBuffer buf; buf.setData( arr ); buf.open( QIODevice::ReadOnly ); TIFF *const tiff = TIFFClientOpen( "foo", "r", &buf, tiffReadProc, tiffWriteProc, tiffSeekProc, tiffCloseProc, tiffSizeProc, tiffMapProc, tiffUnmapProc ); if( !tiff ) return false; uint32 width, height; if( !TIFFGetField( tiff, TIFFTAG_IMAGEWIDTH, &width ) || !TIFFGetField( tiff, TIFFTAG_IMAGELENGTH, &height ) ) { TIFFClose( tiff ); return false; } uint16 bitPerSample; if( !TIFFGetField( tiff, TIFFTAG_BITSPERSAMPLE, &bitPerSample ) ) bitPerSample = 1; uint16 samplesPerPixel; // they may be e.g. grayscale with 2 samples per pixel if( !TIFFGetField( tiff, TIFFTAG_SAMPLESPERPIXEL, &samplesPerPixel ) ) samplesPerPixel = 1; if( bitPerSample == 1 && samplesPerPixel == 1 ) { QImage tiffImage( width, height, QImage::Format_Mono ); QVector<QRgb> colortable( 2 ); colortable[0] = 0xffffffff; colortable[1] = 0xff000000; tiffImage.setColorTable( colortable ); for ( uint32 y = 0; y < height; ++y ) { if( TIFFReadScanline( tiff, tiffImage.scanLine( y ), y, 0 ) < 0 ) { TIFFClose( tiff ); return false; } } image = tiffImage; TIFFClose( tiff ); return true; } TIFFClose( tiff ); return false; } } // namespace #endif