コード例 #1
0
QAudioDeviceInfo QAudioDeviceFactory::defaultOutputDevice()
{
#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
    QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(audioLoader()->instance(defaultKey()));
    if (plugin) {
        QList<QByteArray> list = plugin->availableDevices(QAudio::AudioOutput);
        if (list.size() > 0)
            return QAudioDeviceInfo(defaultKey(), list.at(0), QAudio::AudioOutput);
    }

    // if no plugin is marked as default or if the default plugin doesn't have any output device,
    // return the first output available from other plugins.
    QList<QAudioDeviceInfo> outputDevices = availableDevices(QAudio::AudioOutput);
    if (!outputDevices.isEmpty())
        return outputDevices.first();
#endif

    return QAudioDeviceInfo();
}
コード例 #2
0
QAudioDeviceInfo QAudioDeviceFactory::defaultOutputDevice()
{
#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
    QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(audioLoader()->instance(QLatin1String("default")));

    if (plugin) {
        QList<QByteArray> list = plugin->availableDevices(QAudio::AudioOutput);
        if (list.size() > 0)
            return QAudioDeviceInfo(QLatin1String("default"), list.at(0), QAudio::AudioOutput);
    }
#endif

    QAudioDeviceInfo result;
#ifndef QT_NO_AUDIO_BACKEND
#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
    result = QAudioDeviceInfo(QLatin1String("builtin"), QAudioDeviceInfoInternal::defaultOutputDevice(), QAudio::AudioOutput);
#endif
#endif
    return result;
}