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shared-libraries/ScStwLibraries/sources/scstwsoundplayer.cpp

155 lines
4.6 KiB
C++

#include "../headers/scstwsoundplayer.h"
ScStwSoundPlayer::ScStwSoundPlayer(QObject *parent) : QObject(parent)
{
this->waitLoop = new QEventLoop(this);
this->waitTimer = new QTimer(this);
this->soundFiles.insert(0, new QFile(":/sound/AtYourMarksSound.wav", this));
this->soundFiles.insert(1, new QFile(":/sound/ReadySound.wav", this));
this->soundFiles.insert(2, new QFile(":/sound/StartsignalSound.wav", this));
this->falseStartSoundFile = new QFile(":/sound/FalseStartSound.wav", this);
// init sound format
QAudioFormat format;
format.setSampleRate(44100);
format.setChannelCount(2);
format.setSampleSize(16);
format.setCodec("audio/pcm");
format.setByteOrder(QAudioFormat::LittleEndian);
format.setSampleType(QAudioFormat::SignedInt);
// check if format is valid
QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice());
if (!info.isFormatSupported(format)) {
qWarning() << "Raw audio format not supported by backend, cannot play audio.";
return;
}
this->audioOutput = new QAudioOutput(format, this);
this->audioOutput->setCategory("ScStw start sound");
connect(this->audioOutput, SIGNAL(stateChanged(QAudio::State)), this, SLOT(handleStateChanged(QAudio::State)));
connect(this, &ScStwSoundPlayer::playbackStarted, this->waitLoop, &QEventLoop::quit);
}
bool ScStwSoundPlayer::play(int action, double volume, double *timeOfStart) {
if(!this->soundFiles.contains(action))
return false;
// stop playback
if(this->audioOutput->state() == QAudio::ActiveState)
this->audioOutput->stop();
// update currently playing action
this->currentlyPlayingAction = action;
QFile *playbackFile = this->soundFiles[action];
// close soundfile
if(playbackFile->isOpen())
playbackFile->close();
// open soundfile
if(!playbackFile->open(QFile::ReadOnly)) {
qWarning() << "[ERROR][SOUNDS] Could not open sound file " << action << " !!";
return false;
}
// update volume
this->audioOutput->setVolume(volume);
// start
this->audioOutput->start(playbackFile);
// pass the time of start if requested
if(timeOfStart != nullptr) {
*timeOfStart = QDateTime::currentMSecsSinceEpoch() - (this->audioOutput->elapsedUSecs() / 1000);
}
if(action < 2)
return this->waitForSoundFinish();
return true;
}
bool ScStwSoundPlayer::cancel(double volume) {
if(!QList<QAudio::State>{QAudio::ActiveState}.contains(this->audioOutput->state()) )
return false;
// stop playback
this->audioOutput->stop();
this->waitLoop->quit();
if(this->currentlyPlayingAction != 2)
return true;
// close soundfile
if(this->falseStartSoundFile->isOpen())
this->falseStartSoundFile->close();
// open sound file
if(!this->falseStartSoundFile->open(QFile::ReadOnly)) {
qWarning() << "[ERROR][SOUNDS] Could not open false start sound file!!";
return false;
}
// update volume
this->audioOutput->setVolume(volume);
// start
this->audioOutput->start(this->falseStartSoundFile);
return true;
}
bool ScStwSoundPlayer::waitForSoundFinish(double *timeOfStop) {
if(this->audioOutput->state() != QAudio::ActiveState)
return false;
// wait until the audio output reports the sound is over
waitLoop->exec();
// wait until the sound is actually over
// the timeOffset is the buffer time before the audio started!
int timeOffset = ((this->audioOutput->processedUSecs() - this->audioOutput->elapsedUSecs()) / 1000);
if(timeOffset > 0) {
QTimer timer;
timer.singleShot(timeOffset, this->waitLoop, &QEventLoop::quit);
this->waitLoop->exec();
}
// calculate the point in time where the sound playback actually ended
if(timeOfStop != nullptr) {
int latency = (this->audioOutput->processedUSecs() - this->audioOutput->elapsedUSecs()) / 1000;
*timeOfStop = QDateTime::currentMSecsSinceEpoch() - latency;
}
return true;
}
void ScStwSoundPlayer::handleStateChanged(QAudio::State newState)
{
switch (newState) {
case QAudio::IdleState:
// Finished playing (no more data)
waitLoop->exit();
break;
case QAudio::StoppedState:
// Stopped for other reasons
if (this->audioOutput->error() != QAudio::NoError) {
// Error handling
}
break;
case QAudio::ActiveState:
emit this->playbackStarted();
break;
default:
// ... other cases as appropriate
break;
}
}