void CachingReaderWorker::run() {
unsigned static id = 0; //the id of this thread, for debugging purposes
QThread::currentThread()->setObjectName(QString("CachingReaderWorker %1").arg(++id));
CachingReaderChunkReadRequest request;
Event::start(m_tag);
while (!load_atomic(m_stop)) {
if (m_newTrack) {
TrackPointer pLoadTrack;
{ // locking scope
QMutexLocker locker(&m_newTrackMutex);
pLoadTrack = m_newTrack;
m_newTrack = TrackPointer();
} // implicitly unlocks the mutex
loadTrack(pLoadTrack);
} else if (m_pChunkReadRequestFIFO->read(&request, 1) == 1) {
// Read the requested chunk and send the result
const ReaderStatusUpdate update(processReadRequest(request));
m_pReaderStatusFIFO->writeBlocking(&update, 1);
} else {
Event::end(m_tag);
m_semaRun.acquire();
Event::start(m_tag);
}
}
}
void CachingReaderWorker::run() {
unsigned static id = 0; //the id of this thread, for debugging purposes
QThread::currentThread()->setObjectName(QString("CachingReaderWorker %1").arg(++id));
TrackPointer pLoadTrack;
ChunkReadRequest request;
ReaderStatusUpdate status;
Event::start(m_tag);
while (!load_atomic(m_stop)) {
if (m_newTrack) {
m_newTrackMutex.lock();
pLoadTrack = m_newTrack;
m_newTrack = TrackPointer();
m_newTrackMutex.unlock();
loadTrack(pLoadTrack);
} else if (m_pChunkReadRequestFIFO->read(&request, 1) == 1) {
// Read the requested chunks.
processChunkReadRequest(&request, &status);
m_pReaderStatusFIFO->writeBlocking(&status, 1);
} else {
Event::end(m_tag);
m_semaRun.acquire();
Event::start(m_tag);
}
}
}
void TrackInfoObject::setAnalyserProgress(int progress) {
// progress in 0 .. 1000. QAtomicInt so no need for lock.
if (progress != load_atomic(m_analyserProgress)) {
m_analyserProgress = progress;
emit(analyserProgress(progress));
}
}
void BulkReader::run() {
m_stop = 0;
unsigned char data[255];
while (load_atomic(m_stop) == 0) {
// Blocked polling: The only problem with this is that we can't close
// the device until the block is released, which means the controller
// has to send more data
//result = hid_read_timeout(m_pHidDevice, data, 255, -1);
// This relieves that at the cost of higher CPU usage since we only
// block for a short while (500ms)
int transferred;
int result;
result = libusb_bulk_transfer(m_phandle,
m_in_epaddr,
data, sizeof(data),
&transferred, 500);
Trace timeout("BulkReader timeout");
if (result >= 0) {
Trace process("BulkReader process packet");
//qDebug() << "Read" << result << "bytes, pointer:" << data;
QByteArray outData((char*)data, transferred);
emit(incomingData(outData, Time::elapsed()));
}
}
qDebug() << "Stopped Reader";
}
void TrackExportWorker::run() {
int i = 0;
for (const auto& track : m_tracks) {
auto fileinfo = track->getFileInfo();
emit(progress(fileinfo.fileName(), i, m_tracks.size()));
exportTrack(track);
if (load_atomic(m_bStop)) {
emit(canceled());
return;
}
++i;
emit(progress(fileinfo.fileName(), i, m_tracks.size()));
}
}
void TrackExportWorker::run() {
int i = 0;
QMap<QString, QFileInfo> copy_list = createCopylist(m_tracks);
for (auto it = copy_list.constBegin(); it != copy_list.constEnd(); ++it) {
// We emit progress twice per loop, which may seem excessive, but it
// guarantees that we emit a sane progress before we start and after
// we end. In between, each filename will get its own visible tick
// on the bar, which looks really nice.
emit(progress(it->fileName(), i, copy_list.size()));
copyFile(*it, it.key());
if (load_atomic(m_bStop)) {
emit(canceled());
return;
}
++i;
emit(progress(it->fileName(), i, copy_list.size()));
}
}
TrackExportWorker::OverwriteAnswer TrackExportWorker::makeOverwriteRequest(
QString filename) {
// QT's QFuture is not quite right for this type of threaded question-and-answer.
// std::future works fine, even with signals and slots.
QScopedPointer<std::promise<OverwriteAnswer>> mode_promise(
new std::promise<OverwriteAnswer>());
std::future<OverwriteAnswer> mode_future = mode_promise->get_future();
emit(askOverwriteMode(filename, mode_promise.data()));
// Block until the user tells us the answer.
mode_future.wait();
// We can be either canceled from the other thread, or as a return value
// from this call. First check for a call from the other thread.
if (load_atomic(m_bStop)) {
return OverwriteAnswer::CANCEL;
}
if (!mode_future.valid()) {
qWarning() << "TrackExportWorker::makeOverwriteRequest invalid answer from future";
m_errorMessage = tr("Error exporting tracks");
stop();
return OverwriteAnswer::CANCEL;
}
OverwriteAnswer answer = mode_future.get();
switch (answer) {
case OverwriteAnswer::SKIP_ALL:
m_overwriteMode = OverwriteMode::SKIP_ALL;
break;
case OverwriteAnswer::OVERWRITE_ALL:
m_overwriteMode = OverwriteMode::OVERWRITE_ALL;
break;
case OverwriteAnswer::CANCEL:
// Handle cancelation as a result of the question.
m_errorMessage = tr("Export process was canceled");
stop();
break;
default:;
}
return answer;
}
void HidReader::run() {
m_stop = 0;
unsigned char *data = new unsigned char[255];
while (load_atomic(m_stop) == 0) {
// Blocked polling: The only problem with this is that we can't close
// the device until the block is released, which means the controller
// has to send more data
//result = hid_read_timeout(m_pHidDevice, data, 255, -1);
// This relieves that at the cost of higher CPU usage since we only
// block for a short while (500ms)
int result = hid_read_timeout(m_pHidDevice, data, 255, 500);
Trace timeout("HidReader timeout");
if (result > 0) {
Trace process("HidReader process packet");
//qDebug() << "Read" << result << "bytes, pointer:" << data;
QByteArray outData(reinterpret_cast<char*>(data), result);
emit(incomingData(outData));
}
}
delete [] data;
}
int TrackInfoObject::getAnalyserProgress() const {
// QAtomicInt so no need for lock.
return load_atomic(m_analyserProgress);
}
// This is called from the AnalyserQueue thread
bool AnalyserQueue::doAnalysis(TrackPointer tio, SoundSourceProxy* pSoundSource) {
int totalSamples = pSoundSource->length();
//qDebug() << tio->getFilename() << " has " << totalSamples << " samples.";
int processedSamples = 0;
QTime progressUpdateInhibitTimer;
progressUpdateInhibitTimer.start(); // Inhibit Updates for 60 milliseconds
int read = 0;
bool dieflag = false;
bool cancelled = false;
int progress; // progress in 0 ... 100
do {
ScopedTimer t("AnalyserQueue::doAnalysis block");
read = pSoundSource->read(kAnalysisBlockSize, m_pSamplesPCM);
// To compare apples to apples, let's only look at blocks that are the
// full block size.
if (read != kAnalysisBlockSize) {
t.cancel();
}
// Safety net in case something later barfs on 0 sample input
if (read == 0) {
t.cancel();
break;
}
// If we get more samples than length, ask the analysers to process
// up to the number we promised, then stop reading - AD
if (read + processedSamples > totalSamples) {
qDebug() << "While processing track of length " << totalSamples << " actually got "
<< read + processedSamples << " samples, truncating analysis at expected length";
read = totalSamples - processedSamples;
dieflag = true;
}
// Normalize the samples from [SHRT_MIN, SHRT_MAX] to [-1.0, 1.0].
// TODO(rryan): Change the SoundSource API to do this for us.
for (int i = 0; i < read; ++i) {
m_pSamples[i] = static_cast<CSAMPLE>(m_pSamplesPCM[i]) / SHRT_MAX;
}
QListIterator<Analyser*> it(m_aq);
while (it.hasNext()) {
Analyser* an = it.next();
//qDebug() << typeid(*an).name() << ".process()";
an->process(m_pSamples, read);
//qDebug() << "Done " << typeid(*an).name() << ".process()";
}
// emit progress updates
// During the doAnalysis function it goes only to 100% - FINALIZE_PERCENT
// because the finalise functions will take also some time
processedSamples += read;
//fp div here prevents insane signed overflow
progress = (int)(((float)processedSamples)/totalSamples *
(1000 - FINALIZE_PERCENT));
if (m_progressInfo.track_progress != progress) {
if (progressUpdateInhibitTimer.elapsed() > 60) {
// Inhibit Updates for 60 milliseconds
emitUpdateProgress(tio, progress);
progressUpdateInhibitTimer.start();
}
}
// Since this is a background analysis queue, we should co-operatively
// yield every now and then to try and reduce CPU contention. The
// analyser queue is CPU intensive so we want to get out of the way of
// the audio callback thread.
//QThread::yieldCurrentThread();
//QThread::usleep(10);
//has something new entered the queue?
if (load_atomic(m_aiCheckPriorities)) {
m_aiCheckPriorities = false;
if (isLoadedTrackWaiting(tio)) {
qDebug() << "Interrupting analysis to give preference to a loaded track.";
dieflag = true;
cancelled = true;
}
}
if (m_exit) {
dieflag = true;
cancelled = true;
}
// Ignore blocks in which we decided to bail for stats purposes.
if (dieflag || cancelled) {
t.cancel();
}
} while(read == kAnalysisBlockSize && !dieflag);
return !cancelled; //don't return !dieflag or we might reanalyze over and over
}
