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qspotifyaudiothreadworker.cpp
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qspotifyaudiothreadworker.cpp
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#include "qspotifyaudiothreadworker.h"
#include <QtCore/QCoreApplication>
#include <QtCore/QDebug>
#include <QtCore/QEvent>
#include <QtCore/QMutexLocker>
#include <QtMultimedia/QAudioOutput>
#include "qspotifysession.h"
#include "qspotifyevents.h"
QSpotifyRingbuffer g_buffer;
QMutex g_mutex;
QMutex g_imageRequestMutex;
QHash<QString, QWaitCondition *> g_imageRequestConditions;
QHash<QString, QImage> g_imageRequestImages;
QHash<sp_image *, QString> g_imageRequestObject;
QSpotifyAudioThreadWorker::QSpotifyAudioThreadWorker(QObject *parent)
: QObject(parent)
{}
bool QSpotifyAudioThreadWorker::event(QEvent *e)
{
// Ignore timer events to have less log trashing
if(e->type() != QEvent::Timer)
qDebug() << "QSpotifyAudioThreadWorker::event" << e->type();
if (e->type() == StreamingStartedEventType) {
QMutexLocker lock(&g_mutex);
QSpotifyStreamingStartedEvent *ev = static_cast<QSpotifyStreamingStartedEvent *>(e);
startStreaming(ev->channels(), ev->sampleRate());
e->accept();
return true;
} else if (e->type() == ResumeEventType) {
QMutexLocker lock(&g_mutex);
if (m_audioOutput) {
m_audioOutput->resume();
m_audioTimerID = startTimer(AUDIOSTREAM_UPDATE_INTERVAL);
}
e->accept();
return true;
} else if (e->type() == SuspendEventType) {
QMutexLocker lock(&g_mutex);
if (m_audioOutput) {
killTimer(m_audioTimerID);
m_audioOutput->suspend();
}
e->accept();
return true;
} else if (e->type() == AudioStopEventType) {
QMutexLocker lock(&g_mutex);
killTimer(m_audioTimerID);
g_buffer.close();
if (m_audioOutput) {
m_audioOutput->stop();
m_audioOutput->deleteLater();
m_audioOutput = nullptr;
m_iodevice = nullptr;
}
e->accept();
return true;
} else if (e->type() == ResetBufferEventType) {
QMutexLocker lock(&g_mutex);
if (m_audioOutput) {
killTimer(m_audioTimerID);
m_audioOutput->reset();
g_buffer.reset();
startAudioOutput();
}
e->accept();
return true;
} else if (e->type() == QEvent::Timer) {
QTimerEvent *te = static_cast<QTimerEvent *>(e);
if (te->timerId() == m_audioTimerID) {
updateAudioBuffer();
e->accept();
return true;
}
}
return QObject::event(e);
}
void QSpotifyAudioThreadWorker::startStreaming(int channels, int sampleRate)
{
qDebug() << "QSpotifyAudioThreadWorker::startStreaming";
if (!m_audioOutput) {
QAudioFormat af;
af.setChannelCount(channels);
af.setCodec("audio/pcm");
af.setSampleRate(sampleRate);
af.setSampleSize(16);
af.setSampleType(QAudioFormat::SignedInt);
QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice());
if (!info.isFormatSupported(af)) {
QList<QAudioDeviceInfo> devices = QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);
for (int i = 0; i < devices.size(); i++) {
QAudioDeviceInfo dev = devices[i];
qWarning() << dev.deviceName();
}
QCoreApplication::postEvent(QSpotifySession::instance(), new QEvent(QEvent::Type(StopEventType)));
return;
}
m_audioOutput = new QAudioOutput(af);
connect(m_audioOutput, SIGNAL(stateChanged(QAudio::State)), QSpotifySession::instance(), SLOT(audioStateChange(QAudio::State)));
m_audioOutput->setBufferSize(BUF_SIZE);
startAudioOutput();
}
}
void QSpotifyAudioThreadWorker::updateAudioBuffer()
{
// qDebug() << "QSpotifyAudioThreadWorker::updateAudioBuffer";
if (!m_audioOutput)
return;
g_mutex.lock();
int toRead = qMin(g_buffer.filledBytes(), m_audioOutput->bytesFree());
char data[toRead];
int read = g_buffer.read(&data[0], toRead);
g_mutex.unlock();
m_iodevice->write(&data[0], read);
m_timeCounter += AUDIOSTREAM_UPDATE_INTERVAL;
if (m_timeCounter >= 1000) {
m_timeCounter = 0;
int elapsedTime = int(m_audioOutput->processedUSecs() / 1000);
QCoreApplication::postEvent(QSpotifySession::instance(), new QSpotifyTrackProgressEvent(elapsedTime - m_previousElapsedTime));
m_previousElapsedTime = elapsedTime;
}
}
void QSpotifyAudioThreadWorker::startAudioOutput()
{
m_timeCounter = 0;
m_previousElapsedTime = 0;
m_iodevice = m_audioOutput->start();
m_audioTimerID = startTimer(AUDIOSTREAM_UPDATE_INTERVAL);
}