qt-everywhere-src-5.15.1/qtmultimedia/src/plugins/audiocapture/audioinputselector.cpp

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#include "audiocapturesession.h"
#include "audioinputselector.h"

#include <qaudiodeviceinfo.h>

QT_BEGIN_NAMESPACE

AudioInputSelector::AudioInputSelector(QObject *parent)
    :QAudioInputSelectorControl(parent)
{
    m_session = qobject_cast<AudioCaptureSession*>(parent);

    update();

    m_audioInput = defaultInput();
}

AudioInputSelector::~AudioInputSelector()
{
}

QList<QString> AudioInputSelector::availableInputs() const
{
    return m_names;
}

QString AudioInputSelector::inputDescription(const QString& name) const
{
    QString desc;

    for(int i = 0; i < m_names.count(); i++) {
        if (m_names.at(i).compare(name) == 0) {
            desc = m_names.at(i);
            break;
        }
    }
    return desc;
}

QString AudioInputSelector::defaultInput() const
{
    return QAudioDeviceInfo::defaultInputDevice().deviceName();
}

QString AudioInputSelector::activeInput() const
{
    return m_audioInput;
}

void AudioInputSelector::setActiveInput(const QString& name)
{
    if (m_audioInput.compare(name) != 0) {
        m_audioInput = name;
        m_session->setCaptureDevice(name);
        emit activeInputChanged(name);
    }
}

void AudioInputSelector::update()
{
    m_names.clear();
    m_descriptions.clear();

    QList<QAudioDeviceInfo> devices;
    devices = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);
    for(int i = 0; i < devices.size(); ++i) {
        m_names.append(devices.at(i).deviceName());
        m_descriptions.append(devices.at(i).deviceName());
    }
}

QT_END_NAMESPACE