phonon_interface.cpp

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/*
 *
 * Copyright (C) 2004-2007 Matthias Kretz <kretz@kde.org>
 * Copyright (C) by Alexander Kern <alex.kern@gmx.de>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *
 * CDDA version taken from guitest in phonon test directory
 */

#include "phonon_interface.h"

#include <kdebug.h>
#include <klocale.h>

#include <Phonon/Global>
#include <Phonon/MediaObject>
#include <Phonon/AudioOutput>
#include <Phonon/Path>
#include <Phonon/MediaController>

#include <solid/device.h>
#include <solid/opticaldrive.h>
#include <solid/opticaldisc.h>

#define WM_MSG_CLASS WM_MSG_CLASS_PLATFORM

using namespace Phonon;

class ProducerWidget : public QObject
{
    public:
        ProducerWidget(KPhononCompactDiscPrivate *, const QString &);
        ~ProducerWidget();

    public:
        MediaObject *m_media;
        AudioOutput *m_output;
        MediaController *m_mediaController;
};

ProducerWidget::ProducerWidget(KPhononCompactDiscPrivate *p, const QString &Udi) :
    m_media(0),
    m_output(0),
    m_mediaController(0)
{
    m_media = new MediaObject(this);
    connect(m_media, SIGNAL(metaDataChanged()), SLOT(updateMetaData()));
    m_media->setTickInterval(1000);

    m_output = new AudioOutput(Phonon::MusicCategory, this);
    Phonon::createPath(m_media, m_output);

    connect(m_media, SIGNAL(stateChanged(Phonon::State,Phonon::State)),
            p, SLOT(stateChanged(Phonon::State,Phonon::State)));

    connect(m_media, SIGNAL(tick(qint64)), p, SLOT(tick(qint64)));

    MediaSource *m_mediaSource = new MediaSource(Phonon::Cd, Udi);
    m_media->setCurrentSource(*m_mediaSource);

    m_mediaController = new MediaController(m_media);
}

ProducerWidget::~ProducerWidget()
{
    delete(m_mediaController);
    delete(m_output);
    delete(m_media);
}

KPhononCompactDiscPrivate::KPhononCompactDiscPrivate(KCompactDisc *p,
    const QString &dev) :
    KCompactDiscPrivate(p, dev),
    m_producerWidget(NULL),
    m_udi(KCompactDisc::cdromDeviceUdi(dev))
{
    m_interface = QLatin1String("phonon");
}

KPhononCompactDiscPrivate::~KPhononCompactDiscPrivate()
{
    delete m_producerWidget;
    m_producerWidget = NULL;
}

bool KPhononCompactDiscPrivate::createInterface()
{
    Solid::Device opticalDevice(m_udi);
    Solid::OpticalDrive *opticalDrive = opticalDevice.as<Solid::OpticalDrive>();

    if(opticalDrive) {
        Q_Q(KCompactDisc);

        m_deviceVendor = opticalDevice.vendor();
        m_deviceModel = opticalDevice.product();

        emit q->discChanged(0);

        producer();

        return true;
    }

    return false;
}

ProducerWidget *KPhononCompactDiscPrivate::producer()
{
    //try to create
    if(!m_producerWidget) {
        Solid::Device opticalDevice(m_udi);
        Solid::OpticalDrive *opticalDrive = opticalDevice.as<Solid::OpticalDrive>();

        if(opticalDrive) {
            Solid::OpticalDisc *opticalDisc = opticalDevice.as<Solid::OpticalDisc>();
            kDebug() << "opticalDisc " << opticalDisc;
            //if(opticalDisc && (opticalDisc->availableContent() == Solid::OpticalDisc::Audio)) {
                m_producerWidget = new ProducerWidget(this, m_udi);
            //}
        }
    }

    return m_producerWidget;
}

unsigned KPhononCompactDiscPrivate::trackLength(unsigned track)
{
    if(!producer() || m_producerWidget->m_mediaController->currentTitle() != track)
        return 0;

    return MS2SEC(m_producerWidget->m_media->totalTime());
}

bool KPhononCompactDiscPrivate::isTrackAudio(unsigned)
{
    return true;
}

void KPhononCompactDiscPrivate::playTrackPosition(unsigned track, unsigned position)
{
    if(!producer())
        return;

    kDebug() << "play track " << track << " position " << position;

    m_producerWidget->m_mediaController->setCurrentTitle(track);
    m_producerWidget->m_media->seek(SEC2MS(position));
    emit m_producerWidget->m_media->play();
}

void KPhononCompactDiscPrivate::pause()
{
    if(!producer())
        return;

    emit m_producerWidget->m_media->pause();
}

void KPhononCompactDiscPrivate::stop()
{
    if(!producer())
        return;

    emit m_producerWidget->m_media->stop();
}

void KPhononCompactDiscPrivate::eject()
{
    Solid::Device opticalDevice(m_udi);
    Solid::OpticalDrive *opticalDrive = opticalDevice.as<Solid::OpticalDrive>();
    Solid::OpticalDisc *opticalDisc = opticalDevice.as<Solid::OpticalDisc>();

    if(!opticalDrive || !opticalDisc)
        return;

    opticalDrive->eject();
}

void KPhononCompactDiscPrivate::closetray()
{
    Solid::Device opticalDevice(m_udi);
    Solid::OpticalDrive *opticalDrive = opticalDevice.as<Solid::OpticalDrive>();
    Solid::OpticalDisc *opticalDisc = opticalDevice.as<Solid::OpticalDisc>();

    if(!opticalDrive || opticalDisc)
        return;

    opticalDrive->eject();
}

void KPhononCompactDiscPrivate::setVolume(unsigned volume)
{
    if(!producer())
        return;

    /* 1.0 = 100% */
    m_producerWidget->m_output->setVolume(volume * 0.01);
}

void KPhononCompactDiscPrivate::setBalance(unsigned)
{
}

unsigned KPhononCompactDiscPrivate::volume()
{
    if(!producer())
        return 0;

    return (unsigned)(m_producerWidget->m_output->volume() * 100.0);
}

unsigned KPhononCompactDiscPrivate::balance()
{
    return 50;
}

void KPhononCompactDiscPrivate::queryMetadata()
{
    Q_Q(KCompactDisc);

    if(!producer())
        return;

    QMultiMap<QString, QString> data = m_producerWidget->m_media->metaData();
    kDebug() << "METADATA";
    //kDebug() << data;

    m_trackArtists[0] = data.take(QLatin1String( "ARTIST" ));
    m_trackTitles[0] = data.take(QLatin1String( "ALBUM" ));

    m_trackArtists[m_track] = data.take(QLatin1String( "ARTIST" ));
    m_trackTitles[m_track] = data.take(QLatin1String( "TITLE" ));

    emit q->discInformation(KCompactDisc::PhononMetadata);
}

KCompactDisc::DiscStatus KPhononCompactDiscPrivate::discStatusTranslate(Phonon::State state)
{
    switch (state) {
    case Phonon::PlayingState:
        return KCompactDisc::Playing;
    case Phonon::PausedState:
        return KCompactDisc::Paused;
    case Phonon::StoppedState:
        return KCompactDisc::Stopped;
    case Phonon::ErrorState:
        return KCompactDisc::NoDisc;
    case Phonon::LoadingState:
    case Phonon::BufferingState:
        return KCompactDisc::NotReady;
    default:
        return KCompactDisc::Error;
    }
}

void KPhononCompactDiscPrivate::tick(qint64 t)
{
    unsigned track;
    Q_Q(KCompactDisc);

    track = m_producerWidget->m_mediaController->currentTitle();
    if(track != m_track) {
        m_track = track;
        m_discLength = trackLength(m_track);
        emit q->playoutTrackChanged(m_track);

        /* phonon gives us Metadata only per Track */
        if(m_autoMetadata)
            queryMetadata();
    }

    m_trackPosition = MS2SEC(t);
    m_discPosition = m_trackPosition;
    // Update the current playing position.
    if(m_seek) {
        kDebug() << "seek: " << m_seek << " trackPosition " << m_trackPosition;
        if(abs((long)(m_trackExpectedPosition - m_trackPosition)) > m_seek)
            m_seek = 0;
        else
            m_seek = abs((long)(m_trackExpectedPosition - m_trackPosition));
    }

    if(!m_seek) {
        emit q->playoutPositionChanged(m_trackPosition);
    }
}

void KPhononCompactDiscPrivate::stateChanged(Phonon::State newstate, Phonon::State)
{
    KCompactDisc::DiscStatus status;
    Q_Q(KCompactDisc);

    status = discStatusTranslate(newstate);

    if(m_status != status) {
        if(skipStatusChange(status))
            return;

        m_status = status;

        switch(m_status) {
        case KCompactDisc::Ejected:
        case KCompactDisc::NoDisc:
            clearDiscInfo();
            break;
        default:
            if(m_tracks == 0) {
                m_tracks = m_producerWidget->m_mediaController->availableTitles();
                if(m_tracks > 0) {
                    kDebug() << "New disc with " << m_tracks << " tracks";

                    make_playlist();

                    m_trackArtists.append(i18n("Unknown Artist"));
                    m_trackTitles.append(i18n("Unknown Title"));
                    for(unsigned i = 1; i <= m_tracks; i++) {
                        m_trackArtists.append(i18n("Unknown Artist"));
                        m_trackTitles.append(ki18n("Track %1").subs(i, 2).toString());
                    }

                    emit q->discChanged(m_tracks);

                    if(m_autoMetadata)
                        queryMetadata();
                }
            }

            break;
        }
    }
}

#include "phonon_interface.moc"