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#include "qdeclarativemediabase_p.h"

#include <QtCore/qcoreevent.h>

#include <QtCore/qurl.h>

#include <qmediaplayercontrol.h>

#include <qmediaservice.h>

#include <qmediaserviceprovider.h>

#include <qmetadatareadercontrol.h>

#include "qmetadatacontrolmetaobject_p.h"

QT_BEGIN_NAMESPACE

class QDeclarativeMediaBaseObject : public QMediaObject

{

public:

    QDeclarativeMediaBaseObject(QMediaService *service)

        : QMediaObject(0, service)

    {

    }

};

class QDeclarativeMediaBasePlayerControl : public QMediaPlayerControl

{

public:

    QDeclarativeMediaBasePlayerControl(QObject *parent)

        : QMediaPlayerControl(parent)

    {

    }

    QMediaPlayer::State state() const { return QMediaPlayer::StoppedState; }

    QMediaPlayer::MediaStatus mediaStatus() const { return QMediaPlayer::NoMedia; }

    qint64 duration() const { return 0; }

    qint64 position() const { return 0; }

    void setPosition(qint64) {}

    int volume() const { return 0; }

    void setVolume(int) {}

    bool isMuted() const { return false; }

    void setMuted(bool) {}

    int bufferStatus() const { return 0; }

    bool isAudioAvailable() const { return false; }

    bool isVideoAvailable() const { return false; }

    bool isSeekable() const { return false; }

    QMediaTimeRange availablePlaybackRanges() const { return QMediaTimeRange(); }

    qreal playbackRate() const { return 1; }

    void setPlaybackRate(qreal) {}

    QMediaContent media() const { return QMediaContent(); }

    const QIODevice *mediaStream() const { return 0; }

    void setMedia(const QMediaContent &, QIODevice *) {}

    void play() {}

    void pause() {}

    void stop() {}

};

class QDeclarativeMediaBaseAnimation : public QObject

{

public:

    QDeclarativeMediaBaseAnimation(QDeclarativeMediaBase *media)

        : m_media(media)

    {

    }

    void start() { if (!m_timer.isActive()) m_timer.start(500, this); }

    void stop() { m_timer.stop(); }

protected:

    void timerEvent(QTimerEvent *event)

    {

        if (event->timerId() == m_timer.timerId()) {

            event->accept();

            if (m_media->m_state == QMediaPlayer::PlayingState)

                emit m_media->positionChanged();

            if (m_media->m_status == QMediaPlayer::BufferingMedia || QMediaPlayer::StalledMedia)

                emit m_media->bufferProgressChanged();

        } else {

            QObject::timerEvent(event);

        }

    }

private:

    QDeclarativeMediaBase *m_media;

    QBasicTimer m_timer;

};

void QDeclarativeMediaBase::_q_stateChanged(QMediaPlayer::State state)

{

    if (m_state == state)

        return;

    switch (state) {

    case QMediaPlayer::StoppedState: {

            emit stopped();

            if (m_playing) {

                m_playing = false;

                emit playingChanged();

            }

        }

        break;

    case QMediaPlayer::PausedState: {

            emit paused();

            if (!m_paused) {

                m_paused = true;

                emit pausedChanged();

            }

            if (m_state == QMediaPlayer::StoppedState)

                emit started();

        }

        break;

    case QMediaPlayer::PlayingState: {

            if (m_state == QMediaPlayer::PausedState)

                emit resumed();

            else

                emit started();

           if (m_paused) {

               m_paused = false;

               emit pausedChanged();

           }

        }

        break;

    }

    // Check

    if (state == QMediaPlayer::PlayingState

            || m_status == QMediaPlayer::BufferingMedia

            || m_status == QMediaPlayer::StalledMedia) {

        m_animation->start();

    }

    else {

        m_animation->stop();

    }

    m_state = state;

}

void QDeclarativeMediaBase::_q_mediaStatusChanged(QMediaPlayer::MediaStatus status)

{

    if (status != m_status) {

        m_status = status;

        switch (status) {

        case QMediaPlayer::LoadedMedia:

            emit loaded();

            break;

        case QMediaPlayer::BufferingMedia:

            emit buffering();

            break;

        case QMediaPlayer::BufferedMedia:

            emit buffered();

            break;

        case QMediaPlayer::StalledMedia:

            emit stalled();

            break;

        case QMediaPlayer::EndOfMedia:

            emit endOfMedia();

            break;

        default:

            break;

        }

        emit statusChanged();

        if (m_state == QMediaPlayer::PlayingState

                || m_status == QMediaPlayer::BufferingMedia

                || m_status == QMediaPlayer::StalledMedia) {

            m_animation->start();

        } else {

            m_animation->stop();

        }

    }

}

void QDeclarativeMediaBase::_q_metaDataChanged()

{

    m_metaObject->metaDataChanged();

}

QDeclarativeMediaBase::QDeclarativeMediaBase()

    : m_paused(false)

    , m_playing(false)

    , m_autoLoad(true)

    , m_loaded(false)

    , m_muted(false)

    , m_position(0)

    , m_vol(1.0)

    , m_playbackRate(1.0)

    , m_mediaService(0)

    , m_playerControl(0)

    , m_mediaObject(0)

    , m_mediaProvider(0)

    , m_metaDataControl(0)

    , m_metaObject(0)

    , m_animation(0)

    , m_state(QMediaPlayer::StoppedState)

    , m_status(QMediaPlayer::NoMedia)

    , m_error(QMediaPlayer::ServiceMissingError)

{

}

QDeclarativeMediaBase::~QDeclarativeMediaBase()

{

}

void QDeclarativeMediaBase::shutdown()

{

    delete m_metaObject;

    delete m_mediaObject;

    if (m_mediaProvider)

        m_mediaProvider->releaseService(m_mediaService);

    delete m_animation;

}

void QDeclarativeMediaBase::setObject(QObject *object)

{

    if ((m_mediaProvider = QMediaServiceProvider::defaultServiceProvider())) {

        if ((m_mediaService = m_mediaProvider->requestService(Q_MEDIASERVICE_MEDIAPLAYER))) {

            m_playerControl = qobject_cast<QMediaPlayerControl *>(

                    m_mediaService->requestControl(QMediaPlayerControl_iid));

            m_metaDataControl = qobject_cast<QMetaDataReaderControl *>(

                    m_mediaService->requestControl(QMetaDataReaderControl_iid));

            m_mediaObject = new QDeclarativeMediaBaseObject(m_mediaService);

        }

    }

    if (m_playerControl) {

        QObject::connect(m_playerControl, SIGNAL(stateChanged(QMediaPlayer::State)),

                object, SLOT(_q_stateChanged(QMediaPlayer::State)));

        QObject::connect(m_playerControl, SIGNAL(mediaStatusChanged(QMediaPlayer::MediaStatus)),

                object, SLOT(_q_mediaStatusChanged(QMediaPlayer::MediaStatus)));

        QObject::connect(m_playerControl, SIGNAL(mediaChanged(QMediaContent)),

                object, SIGNAL(sourceChanged()));

        QObject::connect(m_playerControl, SIGNAL(durationChanged(qint64)),

                object, SIGNAL(durationChanged()));

        QObject::connect(m_playerControl, SIGNAL(positionChanged(qint64)),

                object, SIGNAL(positionChanged()));

        QObject::connect(m_playerControl, SIGNAL(volumeChanged(int)),

                object, SIGNAL(volumeChanged()));

        QObject::connect(m_playerControl, SIGNAL(mutedChanged(bool)),

                object, SIGNAL(mutedChanged()));

        QObject::connect(m_playerControl, SIGNAL(bufferStatusChanged(int)),

                object, SIGNAL(bufferProgressChanged()));

        QObject::connect(m_playerControl, SIGNAL(seekableChanged(bool)),

                object, SIGNAL(seekableChanged()));

        QObject::connect(m_playerControl, SIGNAL(playbackRateChanged(qreal)),

                object, SIGNAL(playbackRateChanged()));

        QObject::connect(m_playerControl, SIGNAL(error(int,QString)),

                object, SLOT(_q_error(int,QString)));

        m_animation = new QDeclarativeMediaBaseAnimation(this);

        m_error = QMediaPlayer::NoError;

    } else {

        m_playerControl = new QDeclarativeMediaBasePlayerControl(object);

    }

    if (m_metaDataControl) {

        m_metaObject = new QMetaDataControlMetaObject(m_metaDataControl, object);

        QObject::connect(m_metaDataControl, SIGNAL(metaDataChanged()),

                object, SLOT(_q_metaDataChanged()));

    }

    // Init

    m_playerControl->setVolume(m_vol * 100);

    m_playerControl->setMuted(m_muted);

    m_playerControl->setPlaybackRate(m_playbackRate);

    if (!m_source.isEmpty() && (m_autoLoad || m_playing)) // Override autoLoad if playing set

        m_playerControl->setMedia(m_source, 0);

    if (m_paused)

        m_playerControl->pause();

    else if (m_playing)

        m_playerControl->play();

    if ((m_playing || m_paused) && m_position > 0)

        m_playerControl->setPosition(m_position);

}

// Properties

QUrl QDeclarativeMediaBase::source() const

{

    return m_source;

}

void QDeclarativeMediaBase::setSource(const QUrl &url)

{

    if (url == m_source)

        return;

    m_source = url;

    m_loaded = false;

    if (m_playerControl != 0 && m_autoLoad) {

        if (m_error != QMediaPlayer::ServiceMissingError && m_error != QMediaPlayer::NoError) {

            m_error = QMediaPlayer::NoError;

            m_errorString = QString();

            emit errorChanged();

        }

        m_playerControl->setMedia(m_source, 0);

        m_loaded = true;

    }

    else

        emit sourceChanged();

}

bool QDeclarativeMediaBase::isAutoLoad() const

{

    return m_autoLoad;

}

void QDeclarativeMediaBase::setAutoLoad(bool autoLoad)

{

    if (m_autoLoad == autoLoad)

        return;

    m_autoLoad = autoLoad;

    emit autoLoadChanged();

}

bool QDeclarativeMediaBase::isPlaying() const

{

    return m_playing;

}

void QDeclarativeMediaBase::setPlaying(bool playing)

{

    if (playing == m_playing)

        return;

    m_playing = playing;

    if (m_playerControl != 0) {

        if (m_playing) {

            if (!m_autoLoad && !m_loaded) {

                m_playerControl->setMedia(m_source, 0);

                m_playerControl->setPosition(m_position);

                m_loaded = true;

            }

            if (!m_paused)

                m_playerControl->play();

            else

                m_playerControl->pause();

        }

        else if (m_state != QMediaPlayer::StoppedState)

            m_playerControl->stop();

    }

    emit playingChanged();

}

bool QDeclarativeMediaBase::isPaused() const

{

    return m_paused;

}

void QDeclarativeMediaBase::setPaused(bool paused)

{

    if (m_paused == paused)

        return;

    m_paused = paused;

    if (m_playerControl != 0) {

        if (!m_autoLoad && !m_loaded) {

            m_playerControl->setMedia(m_source, 0);

            m_playerControl->setPosition(m_position);

            m_loaded = true;

        }

        if (m_paused && m_state == QMediaPlayer::PlayingState) {

            m_playerControl->pause();

        }

        else if (!m_paused && m_playing) {

            m_playerControl->play();

        }

    }

    emit pausedChanged();

}

int QDeclarativeMediaBase::duration() const

{

    return m_playerControl == 0 ? 0 : m_playerControl->duration();

}

int QDeclarativeMediaBase::position() const

{

    return m_playerControl == 0 ? m_position : m_playerControl->position();

}

void QDeclarativeMediaBase::setPosition(int position)

{

    if (m_position == position)

        return;

    m_position = position;

    if (m_playerControl != 0)

        m_playerControl->setPosition(m_position);

    else

        emit positionChanged();

}

qreal QDeclarativeMediaBase::volume() const

{

    return m_playerControl == 0 ? m_vol : qreal(m_playerControl->volume()) / 100;

}

void QDeclarativeMediaBase::setVolume(qreal volume)

{

    if (m_vol == volume)

        return;

    m_vol = volume;

    if (m_playerControl != 0)

        m_playerControl->setVolume(qRound(volume * 100));

    else

        emit volumeChanged();

}

bool QDeclarativeMediaBase::isMuted() const

{

    return m_playerControl == 0 ? m_muted : m_playerControl->isMuted();

}

void QDeclarativeMediaBase::setMuted(bool muted)

{

    if (m_muted == muted)

        return;

    m_muted = muted;

    if (m_playerControl != 0)

        m_playerControl->setMuted(muted);

    else

        emit mutedChanged();

}

qreal QDeclarativeMediaBase::bufferProgress() const

{

    return m_playerControl == 0 ? 0 : qreal(m_playerControl->bufferStatus()) / 100;

}

bool QDeclarativeMediaBase::isSeekable() const

{

    return m_playerControl == 0 ? false : m_playerControl->isSeekable();

}

qreal QDeclarativeMediaBase::playbackRate() const

{

    return m_playbackRate;

}

void QDeclarativeMediaBase::setPlaybackRate(qreal rate)

{

    if (m_playbackRate == rate)

        return;

    m_playbackRate = rate;

    if (m_playerControl != 0)

        m_playerControl->setPlaybackRate(m_playbackRate);

    else

        emit playbackRateChanged();

}

QString QDeclarativeMediaBase::errorString() const

{

    return m_errorString;

}

QT_END_NAMESPACE