AnalyserQueue::AnalyserQueue(TrackCollection* pTrackCollection) :
m_aq(),
m_exit(false),
m_aiCheckPriorities(false),
m_tioq(),
m_qm(),
m_qwait(),
m_queue_size(0) {
connect(this, SIGNAL(updateProgress()),
this, SLOT(slotUpdateProgress()));
connect(this, SIGNAL(trackDone(TrackPointer)),
&pTrackCollection->getTrackDAO(), SLOT(saveTrack(TrackPointer)));
}
void AnalyserQueue::run() {
unsigned static id = 0; //the id of this thread, for debugging purposes
QThread::currentThread()->setObjectName(QString("AnalyserQueue %1").arg(++id));
// If there are no analyzers, don't waste time running.
if (m_aq.size() == 0)
return;
m_progressInfo.current_track = TrackPointer();
m_progressInfo.track_progress = 0;
m_progressInfo.queue_size = 0;
m_progressInfo.sema.release(); // Initalise with one
while (!m_exit) {
TrackPointer nextTrack = dequeueNextBlocking();
// It's important to check for m_exit here in case we decided to exit
// while blocking for a new track.
if (m_exit)
return;
// If the track is NULL, try to get the next one.
// Could happen if the track was queued but then deleted.
// Or if dequeueNextBlocking is unblocked by exit == true
if (!nextTrack) {
m_qm.lock();
m_queue_size = m_tioq.size();
m_qm.unlock();
if (m_queue_size == 0) {
emit(queueEmpty()); // emit asynchrony for no deadlock
}
continue;
}
Trace trace("AnalyserQueue analyzing track");
// Get the audio
SoundSourceProxy soundSource(nextTrack);
soundSource.open(); //Open the file for reading
int iNumSamples = soundSource.length();
int iSampleRate = soundSource.getSampleRate();
if (iNumSamples == 0 || iSampleRate == 0) {
qDebug() << "Skipping invalid file:" << nextTrack->getLocation();
continue;
}
QListIterator<Analyser*> it(m_aq);
bool processTrack = false;
while (it.hasNext()) {
// Make sure not to short-circuit initialise(...)
if (it.next()->initialise(nextTrack, iSampleRate, iNumSamples)) {
processTrack = true;
}
}
m_qm.lock();
m_queue_size = m_tioq.size();
m_qm.unlock();
if (processTrack) {
emitUpdateProgress(nextTrack, 0);
bool completed = doAnalysis(nextTrack, &soundSource);
if (!completed) {
//This track was cancelled
QListIterator<Analyser*> itf(m_aq);
while (itf.hasNext()) {
itf.next()->cleanup(nextTrack);
}
queueAnalyseTrack(nextTrack);
emitUpdateProgress(nextTrack, 0);
} else {
// 100% - FINALIZE_PERCENT finished
emitUpdateProgress(nextTrack, 1000 - FINALIZE_PERCENT);
// This takes around 3 sec on a Atom Netbook
QListIterator<Analyser*> itf(m_aq);
while (itf.hasNext()) {
itf.next()->finalise(nextTrack);
}
emit(trackDone(nextTrack));
emitUpdateProgress(nextTrack, 1000); // 100%
}
} else {
emitUpdateProgress(nextTrack, 1000); // 100%
qDebug() << "Skipping track analysis because no analyzer initialized.";
}
m_qm.lock();
m_queue_size = m_tioq.size();
m_qm.unlock();
if (m_queue_size == 0) {
emit(queueEmpty()); // emit asynchrony for no deadlock
}
}
emit(queueEmpty()); // emit in case of exit;
}