qtmultimedia/src/plugins/audiocapture/audiomediarecordercontrol.cpp

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#include "audiocapturesession.h"
#include "audiomediarecordercontrol.h"

#include <QtCore/qdebug.h>

AudioMediaRecorderControl::AudioMediaRecorderControl(QObject *parent)
    :QMediaRecorderControl(parent)
    , m_state(QMediaRecorder::StoppedState)
    , m_prevStatus(QMediaRecorder::UnloadedStatus)
{
    m_session = qobject_cast<AudioCaptureSession*>(parent);
    connect(m_session,SIGNAL(positionChanged(qint64)),this,SIGNAL(durationChanged(qint64)));
    connect(m_session,SIGNAL(stateChanged(QMediaRecorder::State)), this,SLOT(updateStatus()));
    connect(m_session,SIGNAL(error(int,QString)),this,SLOT(handleSessionError(int,QString)));
}

AudioMediaRecorderControl::~AudioMediaRecorderControl()
{
}

QUrl AudioMediaRecorderControl::outputLocation() const
{
    return m_session->outputLocation();
}

bool AudioMediaRecorderControl::setOutputLocation(const QUrl& sink)
{
    return m_session->setOutputLocation(sink);
}

QMediaRecorder::State AudioMediaRecorderControl::state() const
{
    return (QMediaRecorder::State)m_session->state();
}

QMediaRecorder::Status AudioMediaRecorderControl::status() const
{
    static QMediaRecorder::Status statusTable[3][3] = {
        //Stopped recorder state:
        { QMediaRecorder::LoadedStatus, QMediaRecorder::FinalizingStatus, QMediaRecorder::FinalizingStatus },
        //Recording recorder state:
        { QMediaRecorder::StartingStatus, QMediaRecorder::RecordingStatus, QMediaRecorder::PausedStatus },
        //Paused recorder state:
        { QMediaRecorder::StartingStatus, QMediaRecorder::RecordingStatus, QMediaRecorder::PausedStatus }
    };

    return statusTable[m_state][m_session->state()];
}

qint64 AudioMediaRecorderControl::duration() const
{
    return m_session->position();
}

bool AudioMediaRecorderControl::isMuted() const
{
    return false;
}

qreal AudioMediaRecorderControl::volume() const
{
    //TODO: implement muting and audio gain
    return 1.0;
}

void AudioMediaRecorderControl::setState(QMediaRecorder::State state)
{
    if (m_state == state)
        return;

    m_state = state;

    switch (state) {
    case QMediaRecorder::StoppedState:
        m_session->stop();
        break;
    case QMediaRecorder::PausedState:
        m_session->pause();
        break;
    case QMediaRecorder::RecordingState:
        m_session->record();
        break;
    }

    updateStatus();
}

void AudioMediaRecorderControl::setMuted(bool)
{
}

void AudioMediaRecorderControl::setVolume(qreal volume)
{
    if (!qFuzzyCompare(volume, qreal(1.0)))
        qWarning() << "Media service doesn't support recorder audio gain.";
}

void AudioMediaRecorderControl::updateStatus()
{
    QMediaRecorder::Status newStatus = status();
    if (m_prevStatus != newStatus) {
        m_prevStatus = newStatus;
        emit statusChanged(m_prevStatus);
    }
}

void AudioMediaRecorderControl::handleSessionError(int code, const QString &description)
{
    emit error(code, description);
    setState(QMediaRecorder::StoppedState);
}