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// This library is distributed under the conditions of the GNU LGPL.
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#include "config.h"
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#ifdef HAVE_LIBTIFF
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#include <tiffio.h>
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#include <tqimage.h>
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#include <tqfile.h>
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#include <kdelibs_export.h>
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#include <assert.h>
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#include "tiffr.h"
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static tsize_t tiff_read( thandle_t handle, tdata_t buf, tsize_t size )
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{
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TQIODevice *dev = reinterpret_cast<TQIODevice *>( handle );
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return dev->readBlock( reinterpret_cast<char *>( buf ), size );
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}
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static tsize_t tiff_write( thandle_t, tdata_t, tsize_t )
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{
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return 0;
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}
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static toff_t tiff_seek( thandle_t handle, toff_t off, int whence )
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{
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TQIODevice *dev = reinterpret_cast<TQIODevice *>( handle );
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if ( whence == SEEK_CUR )
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off += dev->tqat();
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else if ( whence == SEEK_END )
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off += dev->size();
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if ( !dev->tqat( off ) )
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return ( toff_t )-1;
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return dev->tqat();
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}
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static toff_t tiff_size( thandle_t handle )
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{
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TQIODevice *dev = reinterpret_cast<TQIODevice *>( handle );
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return dev->size();
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}
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static int tiff_close( thandle_t )
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{
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return 0;
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}
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static int tiff_map( thandle_t, tdata_t *, toff_t * )
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{
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return 0;
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}
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static void tiff_unmap( thandle_t, tdata_t, toff_t )
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{
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}
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KDE_EXPORT void kimgio_tiff_read( TQImageIO *io )
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{
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TIFF *tiff;
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uint32 width, height;
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uint32 *data;
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// FIXME: use qdatastream
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// open file
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tiff = TIFFClientOpen( TQFile::encodeName( io->fileName() ), "r",
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( thandle_t )io->ioDevice(),
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tiff_read, tiff_write, tiff_seek, tiff_close,
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tiff_size, tiff_map, tiff_unmap );
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if( tiff == 0 ) {
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return;
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}
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// create image with loaded dimensions
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if( TIFFGetField( tiff, TIFFTAG_IMAGEWIDTH, &width ) != 1
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|| TIFFGetField( tiff, TIFFTAG_IMAGELENGTH, &height ) != 1 )
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return;
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TQImage image( width, height, 32 );
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if( image.isNull()) {
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TIFFClose( tiff );
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return;
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}
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data = (uint32 *)image.bits();
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//Sven: changed to %ld for 64bit machines
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//debug( "unsigned size: %ld, uint32 size: %ld",
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// (long)sizeof(unsigned), (long)sizeof(uint32) );
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// read data
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bool stat =TIFFReadRGBAImage( tiff, width, height, data );
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if( stat == 0 ) {
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TIFFClose( tiff );
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return;
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}
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// reverse red and blue
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for( unsigned i = 0; i < width * height; ++i )
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{
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uint32 red = ( 0x00FF0000 & data[i] ) >> 16;
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uint32 blue = ( 0x000000FF & data[i] ) << 16;
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data[i] &= 0xFF00FF00;
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data[i] += red + blue;
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}
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// reverse image (it's upside down)
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for( unsigned ctr = 0; ctr < (height>>1); ) {
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unsigned *line1 = (unsigned *)image.scanLine( ctr );
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unsigned *line2 = (unsigned *)image.scanLine( height
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- ( ++ctr ) );
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for( unsigned x = 0; x < width; x++ ) {
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int temp = *line1;
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*line1 = *line2;
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*line2 = temp;
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line1++;
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line2++;
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}
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// swap rows
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}
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// set channel order to Qt order
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// FIXME: Right now they are the same, but will it change?
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// for( int ctr = (image.numBytes() / sizeof(uint32))+1; ctr ; ctr-- ) {
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// // TODO: manage alpha with TIFFGetA
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// *data = tqRgb( TIFFGetR( *data ),
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// TIFFGetG( *data ), TIFFGetB( *data ) );
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// data++;
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// }
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TIFFClose( tiff );
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io->setImage( image );
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io->seStatus ( 0 );
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}
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KDE_EXPORT void kimgio_tiff_write( TQImageIO * )
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{
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// TODO: stub
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}
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#endif
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