void
APG::ConstraintSolver::run()
{
if ( !m_readyToRun ) {
error() << "DANGER WILL ROBINSON! A ConstraintSolver (serial no:" << m_serialNumber << ") tried to run before its QueryMaker finished!";
m_abortRequested = true;
return;
}
if ( m_domain.empty() ) {
debug() << "The QueryMaker returned no tracks";
return;
} else {
debug() << "Domain has" << m_domain.size() << "tracks";
}
debug() << "Running ConstraintSolver" << m_serialNumber;
emit totalSteps( m_maxGenerations );
// GENETIC ALGORITHM LOOP
Population population;
quint32 generation = 0;
Meta::TrackList* best = NULL;
while ( !m_abortRequested && ( generation < m_maxGenerations ) ) {
quint32 s = m_constraintTreeRoot->suggestPlaylistSize();
m_suggestedPlaylistSize = (s > 0) ? s : m_suggestedPlaylistSize;
fill_population( population );
best = find_best( population );
if ( population.value( best ) < m_satisfactionThreshold ) {
select_population( population, best );
mutate_population( population );
generation++;
emit incrementProgress();
} else {
break;
}
}
debug() << "solution at" << (void*)(best);
m_solvedPlaylist = best->mid( 0 );
m_finalSatisfaction = m_constraintTreeRoot->satisfaction( m_solvedPlaylist );
/* clean up */
Population::iterator it = population.begin();
while ( it != population.end() ) {
delete it.key();
it = population.erase( it );
}
emit endProgressOperation( this );
}
void
IpodCopyTracksJob::run()
{
if( !m_coll )
return; // destructed behind our back
float totalSafeCapacity = m_coll.data()->totalCapacity() - m_coll.data()->capacityMargin();
QByteArray mountPoint = QFile::encodeName( m_coll.data()->mountPoint() );
QString collectionPrettyName = m_coll.data()->prettyName();
int trackCount = m_sources.size();
QString operationText;
if( m_transcodingConfig.isJustCopy() )
operationText = i18np( "Transferring one track to %2", "Transferring %1 tracks to %2",
trackCount, collectionPrettyName );
else
operationText = i18np( "Transcoding one track to %2", "Transcoding %1 tracks to %2",
trackCount, collectionPrettyName );
Amarok::Components::logger()->newProgressOperation( this, operationText, trackCount,
this, SLOT(abort()) );
itdb_start_sync( m_coll.data()->m_itdb );
QMapIterator<Meta::TrackPtr, KUrl> it( m_sources );
while( it.hasNext() )
{
if( m_aborted || !m_coll )
break;
it.next();
Meta::TrackPtr track = it.key();
KUrl sourceUrl = it.value();
emit startDuplicateTrackSearch( track );
// wait for searching to finish:
m_searchingForDuplicates.acquire( 1 );
if( m_duplicateTrack )
{
trackProcessed( Duplicate, track, m_duplicateTrack );
continue;
}
if( !m_coll )
break; // destructed behind our back
if( m_transcodingConfig.isJustCopy() // if not copying, we catch big files later
&& track->filesize() > totalSafeCapacity - m_coll.data()->usedCapacity() )
{
// this is a best effort check, we do one definite one after the file is copied
debug() << "Refusing to copy" << track->prettyUrl() << "to iPod: there are only"
<< totalSafeCapacity - m_coll.data()->usedCapacity() << "free bytes (not"
<< "counting a safety margin) on iPod and track has" << track->filesize()
<< "bytes.";
trackProcessed( ExceededingSafeCapacity, track );
continue;
}
QString fileExtension;
if( m_transcodingConfig.isJustCopy() )
fileExtension = track->type();
else
fileExtension = Amarok::Components::transcodingController()->format(
m_transcodingConfig.encoder() )->fileExtension();
if( !m_coll.data()->supportedFormats().contains( fileExtension ) )
{
m_notPlayableFormats.insert( fileExtension );
trackProcessed( NotPlayable, track );
continue;
}
QByteArray fakeSrcName( "filename." ); // only for file extension
fakeSrcName.append( QFile::encodeName( fileExtension ) );
/* determine destination filename; we cannot use ipodTrack because as it has no itdb
* (and thus mountpoint) set */
GError *error = 0;
gchar *destFilename = itdb_cp_get_dest_filename( 0, mountPoint, fakeSrcName, &error );
if( error )
{
warning() << "Cannot construct iPod track filename:" << error->message;
g_error_free( error );
error = 0;
}
if( !destFilename )
{
trackProcessed( InternalError, track );
continue;
}
// start the physical copying
KUrl destUrl = KUrl( QFile::decodeName( destFilename ) );
emit startCopyOrTranscodeJob( sourceUrl, destUrl );
// wait for copying to finish:
m_copying.acquire( 1 );
/* fsync so that progress bar gives correct info and user doesnt remove the iPod
* prematurely */
QFile destFile( QFile::decodeName( destFilename ) );
if( !destFile.exists() )
{
debug() << destFile.fileName() << "does not exist even though we thought we copied it to iPod";
trackProcessed( CopyingFailed, track );
continue;
}
if( !m_coll )
break; // destructed behind our back
if( m_coll.data()->usedCapacity() > totalSafeCapacity )
{
debug() << "We exceeded total safe-to-use capacity on iPod (safe-to-use:"
<< totalSafeCapacity << "B, used:" << m_coll.data()->usedCapacity()
<< "): removing copied track from iPod";
destFile.remove();
trackProcessed( ExceededingSafeCapacity, track );
continue;
}
// fsync needs a file opened for writing, and without Apped it truncates files (?)
if( !destFile.open( QIODevice::WriteOnly | QIODevice::Append ) )
{
warning() << "Cannot open file copied to ipod (for writing):" << destFile.fileName()
<< ": removing it";
destFile.remove();
trackProcessed( InternalError, track );
continue;
}
if( destFile.size() )
fsync( destFile.handle() ); // should flush all kernel buffers to disk
destFile.close();
// create a new track object by copying meta-data from existing one:
IpodMeta::Track *ipodTrack = new IpodMeta::Track( track );
// tell the track it has been copied:
bool accepted = ipodTrack->finalizeCopying( mountPoint, destFilename );
g_free( destFilename );
destFilename = 0;
if( !accepted )
{
debug() << "ipodTrack->finalizeCopying( destFilename ) returned false!";
delete ipodTrack;
trackProcessed( InternalError, track );
continue;
}
if( !m_transcodingConfig.isJustCopy() )
{
// we need to reread some metadata in case the file was transcoded
Meta::FieldHash fields = Meta::Tag::readTags( destFile.fileName() );
ipodTrack->setBitrate( fields.value( Meta::valBitrate, 0 ).toInt() );
ipodTrack->setLength( fields.value( Meta::valLength, 0 ).toLongLong() );
ipodTrack->setSampleRate( fields.value( Meta::valSamplerate, 0 ).toInt() );
Amarok::FileType type = Amarok::FileType( fields.value( Meta::valFormat, 0 ).toInt() );
ipodTrack->setType( Amarok::FileTypeSupport::toString( type ) );
// we retain ReplayGain, tags etc - these shouldn't change; size is read
// in finalizeCopying()
}
// add the track to collection
if( !m_coll )
{
delete ipodTrack;
break; // we were waiting for copying, m_coll may got destoryed
}
Meta::TrackPtr newTrack = m_coll.data()->addTrack( ipodTrack );
if( !newTrack )
{
destFile.remove();
trackProcessed( InternalError, track );
continue;
}
trackProcessed( Success, track, newTrack );
}
if( m_coll )
itdb_stop_sync( m_coll.data()->m_itdb );
emit endProgressOperation( this );
int sourceSize = m_sources.size();
int successCount = m_sourceTrackStatus.count( Success );
int duplicateCount = m_sourceTrackStatus.count( Duplicate );
QString transferredText;
if ( m_transcodingConfig.isJustCopy() )
transferredText = i18ncp( "%2 is collection name", "Transferred one track to %2.",
"Transferred %1 tracks to %2.", successCount, collectionPrettyName );
else
transferredText = i18ncp( "%2 is collection name", "Transcoded one track to %2.",
"Transcoded %1 tracks to %2.", successCount, collectionPrettyName );
if( successCount == sourceSize )
{
Amarok::Components::logger()->shortMessage( transferredText );
}
else if( m_aborted )
{
QString text = i18np( "Transfer aborted. Managed to transfer one track.",
"Transfer aborted. Managed to transfer %1 tracks.",
successCount );
Amarok::Components::logger()->longMessage( text );
}
else if( successCount + duplicateCount == sourceSize )
{
QString text = i18ncp( "%2 is the 'Transferred 123 tracks to Some collection.' message",
"%2 One track was already there.", "%2 %1 tracks were already there.",
duplicateCount, transferredText );
Amarok::Components::logger()->longMessage( text );
}
else
{
// somethig more severe failed, notify user using a dialog
emit displaySorryDialog();
}
}
