TrackReader::TrackReadResult TrackReader::loadTrackFile(const QUrl& url)
{
// TODO: store some kind of error message
TrackReadResult parsedData;
parsedData.track.url = url;
parsedData.isValid = false;
QFile file(url.toLocalFile());
if (!file.open(QFile::ReadOnly | QFile::Text))
{
parsedData.loadError = i18n("Could not open: %1", file.errorString());
return parsedData;
}
if (file.size() == 0)
{
parsedData.loadError = i18n("File is empty.");
return parsedData;
}
// TODO: load the file
TrackReader trackReader(&parsedData);
QXmlSimpleReader reader;
reader.setContentHandler(&trackReader);
reader.setErrorHandler(&trackReader);
QXmlInputSource xmlInputSource(&file);
// TODO: error handling
parsedData.isValid = reader.parse(xmlInputSource);
if (!parsedData.isValid)
{
parsedData.loadError = i18n("Parsing error: %1", trackReader.errorString());
return parsedData;
}
parsedData.isValid = !parsedData.track.points.isEmpty();
if (!parsedData.isValid)
{
if (!trackReader.d->verifyFoundGPXElement)
{
parsedData.loadError = i18n("No GPX element found - probably not a GPX file.");
}
else
{
parsedData.loadError = i18n("File is a GPX file, but no datapoints were found.");
}
return parsedData;
}
// the correlation algorithm relies on sorted data, therefore sort now
qSort(parsedData.track.points.begin(), parsedData.track.points.end(), TrackManager::TrackPoint::EarlierThan);
return parsedData;
}
bool K3b::MusicBrainzTrackLookupJob::run()
{
if ( !d->track ) {
emit infoMessage( "Internal error: no track set. This is a bug!", MessageError );
return false;
}
emit infoMessage( i18n("Generating fingerprint for track %1.",
d->track->trackNumber()), MessageInfo );
AudioTrackReader trackReader( *d->track );
d->trm.start( d->track->length() );
char buffer[2352*10];
qint64 len = 0;
qint64 dataRead = 0;
while( !canceled() &&
(len = trackReader.read( buffer, sizeof(buffer) )) > 0 ) {
dataRead += len;
// swap data
char buf;
for( qint64 i = 0; i < len-1; i+=2 ) {
buf = buffer[i];
buffer[i] = buffer[i+1];
buffer[i+1] = buf;
}
if( d->trm.generate( buffer, len ) ) {
len = 0;
break;
}
// FIXME: useless since libmusicbrainz does never need all the data
emit percent( 100LL*dataRead/trackReader.size() );
}
if( canceled() ) {
return false;
}
else if( len != 0 ||
!d->trm.finalize() ) {
return false;
}
emit infoMessage( i18n("Querying MusicBrainz for track %1.",
d->track->trackNumber()), MessageInfo );
d->results = d->mb.query( d->trm.signature() );
return( d->results > 0 );
}
