C++ (Qt)
	foreach(const QAudioDeviceInfo &deviceInfo, QAudioDeviceInfo::availableDevices(QAudio::AudioOutput))
		qDebug() << "Device name: " << deviceInfo.deviceName();

— a/src/multimedia/audio/qaudiodeviceinfo_alsa_p.cpp
+++ b/src/multimedia/audio/qaudiodeviceinfo_alsa_p.cpp
@@ -403,6 +403,7 @@ void QAudioDeviceInfoInternal::updateLists()

QList<QByteArray> QAudioDeviceInfoInternal::availableDevices(QAudio::Mode mode)
{
+ QList<QByteArray> allDevices;
QList<QByteArray> devices;
QByteArray filter;

@@ -430,6 +431,7 @@ QList<QByteArray> QAudioDeviceInfoInternal::availableDevices(QAudio::Mode mode)
if((name != NULL) && (descr != NULL) && ((io == NULL) || (io == filter))) { QString deviceName = QLatin1String(name); QString deviceDescription = QLatin1String(descr); + allDevices.append(deviceName.toLocal8Bit().constData()); if(deviceDescription.contains(QLatin1String("Default Audio Device"))) devices.append(deviceName.toLocal8Bit().constData()); }
@@ -457,6 +459,9 @@ QList<QByteArray> QAudioDeviceInfoInternal::availableDevices(QAudio::Mode mode)
if (idx > 0)
devices.append("default");
#endif
+ if (devices.size() == 0 && allDevices.size() > 0)
+ return allDevices;
+
return devices;
}

C++ (Qt)
#include <QFile>
#include <QAudioFormat>
#include <QAudioOutput>
#include <QDebug>
#include <QSound>
 
int main(int argc, char *argv[])
{
  QCoreApplication a(argc, argv);
  foreach(const QAudioDeviceInfo &deviceInfo, QAudioDeviceInfo::availableDevices(QAudio::AudioOutput))
    qDebug() << "Device name: " << deviceInfo.deviceName();
 
 
  QFile inputFile;
  inputFile.setFileName("main_compressor_work.wav");
  inputFile.open(QIODevice::ReadOnly);
 
  QAudioFormat format;
  // Set up the format, eg.
  format.setFrequency(8000);
  format.setChannels(1);
  format.setSampleSize(8);
  format.setCodec("audio/pcm");
  format.setByteOrder(QAudioFormat::LittleEndian);
  format.setSampleType(QAudioFormat::UnSignedInt);
 
  QAudioOutput *audio = new QAudioOutput( format, 0);
  //connect(audio,SIGNAL(stateChanged(QAudio::State)),SLOT(finishedPlaying(QAudio::State)));
  audio->start(&inputFile);
 
  return a.exec();
}