本文整理汇总了C++中QAudioDeviceInfo::availableDevices方法的典型用法代码示例。如果您正苦于以下问题：C++ QAudioDeviceInfo::availableDevices方法的具体用法？C++ QAudioDeviceInfo::availableDevices怎么用？C++ QAudioDeviceInfo::availableDevices使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QAudioDeviceInfo的用法示例。
在下文中一共展示了QAudioDeviceInfo::availableDevices方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: start
void SoundInput::start(qint32 device)
{
stop();
//---------------------------------------------------- Soundcard Setup
m_callbackData.kin=0; //Buffer pointer
m_callbackData.ncall=0; //Number of callbacks
m_callbackData.bzero=false; //Flag to request reset of kin
m_callbackData.monitoring=m_monitoring;
//### Temporary: hardwired device selection
QAudioDeviceInfo DeviceInfo;
QList<QAudioDeviceInfo> m_InDevices;
QAudioDeviceInfo m_InDeviceInfo;
m_InDevices = DeviceInfo.availableDevices(QAudio::AudioInput);
inputDevice = m_InDevices.at(0);
//###
// qDebug() << "B" << m_InDevices.length() << inputDevice.deviceName();
const char* pcmCodec = "audio/pcm";
QAudioFormat audioFormat = inputDevice.preferredFormat();
audioFormat.setChannelCount(1);
audioFormat.setCodec(pcmCodec);
audioFormat.setSampleRate(12000);
audioFormat.setSampleType(QAudioFormat::SignedInt);
audioFormat.setSampleSize(16);
// qDebug() << "C" << audioFormat << audioFormat.isValid();
if (!audioFormat.isValid()) {
emit error(tr("Requested audio format is not available."));
return;
}
audioInput = new QAudioInput(inputDevice, audioFormat);
// qDebug() << "D" << audioInput->error() << QAudio::NoError;
if (audioInput->error() != QAudio::NoError) {
emit error(reportAudioError(audioInput->error()));
return;
}
stream = audioInput->start();
// qDebug() << "E" << stream->errorString();
m_ntr0 = 99; // initial value higher than any expected
m_nBusy = 0;
m_intervalTimer.start(100);
m_ms0 = QDateTime::currentMSecsSinceEpoch();
m_nsps0 = 0;
}示例2: qDebug
/////////////////////////////////////////////////////////////////////
// Starts up soundcard output thread using soundcard at list OutDevIndx
/////////////////////////////////////////////////////////////////////
bool CSoundOut::Start(int OutDevIndx, bool StereoOut, double UsrDataRate, bool BlockingMode)
{
QAudioDeviceInfo DeviceInfo;
long mvolume;
m_StereoOut = StereoOut;
m_BlockingMode = BlockingMode;
//Get required soundcard from list
m_OutDevices = DeviceInfo.availableDevices(QAudio::AudioOutput);
if (-1 == OutDevIndx) GetAlsaMasterVolume(&mvolume);
qDebug()<<"Soundcard volume" << mvolume;
if (-1 == OutDevIndx) m_OutDeviceInfo = QAudioDeviceInfo::defaultOutputDevice();
else m_OutDeviceInfo = m_OutDevices.at(OutDevIndx);
#if 1 //RRK get a list of audio devices and the default
foreach (const QAudioDeviceInfo &deviceInfo, QAudioDeviceInfo::availableDevices(QAudio::AudioOutput)) {
qDebug() << "l:" << deviceInfo.deviceName();
}
QAudioDeviceInfo info = QAudioDeviceInfo::defaultOutputDevice();
qDebug() << "res:" << info.deviceName();
#endif
//Setup fixed format for sound ouput
m_OutAudioFormat.setCodec("audio/pcm");
//m_OutAudioFormat.setFrequency(SOUNDCARD_RATE);
m_OutAudioFormat.setSampleRate(SOUNDCARD_RATE);
m_OutAudioFormat.setSampleSize(16);
m_OutAudioFormat.setSampleType(QAudioFormat::SignedInt);
m_OutAudioFormat.setByteOrder(QAudioFormat::LittleEndian);
if(m_StereoOut)
//RRK m_OutAudioFormat.setChannels(2);
m_OutAudioFormat.setChannelCount(2);
else
m_OutAudioFormat.setChannelCount(1);
m_pAudioOutput = new QAudioOutput(m_OutDeviceInfo, m_OutAudioFormat, this);
if(!m_pAudioOutput)
{
qDebug()<<"Soundcard output error";
return false;
}
if(QAudio::NoError == m_pAudioOutput->error() )
{
//initialize the data queue variables
m_UserDataRate = 1; //force user data rate to be changed
ChangeUserDataRate(UsrDataRate);
m_pOutput = m_pAudioOutput->start(); //start QT AudioOutput
//RRK workaround for default, for some reason choosing default
//sets the master volume to max!
if (-1 == OutDevIndx) SetAlsaMasterVolume(50);
//determine how long to sleep between low level reads based on samplerate and period size
m_BlockTime = ( 250*m_pAudioOutput->periodSize() )/
( SOUNDCARD_RATE*m_OutAudioFormat.channelCount() );
//RRK ( SOUNDCARD_RATE*m_OutAudioFormat.channels() );
//qDebug()<<"periodSize "<<m_pAudioOutput->periodSize();
//qDebug()<<"BlockTime "<<m_BlockTime;
m_ThreadQuit = FALSE;
start(QThread::HighestPriority); //start worker thread and set its priority
// start(QThread::TimeCriticalPriority); //start worker thread and set its priority
return true;
}
else
{
qDebug()<<"Soundcard output error";
return false;
}
}