1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the Qt Mobility Components.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include "qdeclarativemediabase_p.h"

    43 

    44 #include <QtCore/qcoreevent.h>

    45 #include <QtCore/qurl.h>

    46 

    47 #include <qmediaplayercontrol.h>

    48 #include <qmediaservice.h>

    49 #include <qmediaserviceprovider.h>

    50 #include <qmetadatareadercontrol.h>

    51 #include "qmetadatacontrolmetaobject_p.h"

    52 

    53 

    54 

    55 QT_BEGIN_NAMESPACE

    56 

    57 

    58 class QDeclarativeMediaBaseObject : public QMediaObject

    59 {

    60 public:

    61     QDeclarativeMediaBaseObject(QMediaService *service)

    62         : QMediaObject(0, service)

    63     {

    64     }

    65 };

    66 

    67 class QDeclarativeMediaBasePlayerControl : public QMediaPlayerControl

    68 {

    69 public:

    70     QDeclarativeMediaBasePlayerControl(QObject *parent)

    71         : QMediaPlayerControl(parent)

    72     {

    73     }

    74 

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

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

    77 

    78     qint64 duration() const { return 0; }

    79     qint64 position() const { return 0; }

    80     void setPosition(qint64) {}

    81     int volume() const { return 0; }

    82     void setVolume(int) {}

    83     bool isMuted() const { return false; }

    84     void setMuted(bool) {}

    85     int bufferStatus() const { return 0; }

    86     bool isAudioAvailable() const { return false; }

    87     bool isVideoAvailable() const { return false; }

    88     bool isSeekable() const { return false; }

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

    90     qreal playbackRate() const { return 1; }

    91     void setPlaybackRate(qreal) {}

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

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

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

    95 

    96     void play() {}

    97     void pause() {}

    98     void stop() {}

    99 };

   100 

   101 class QDeclarativeMediaBaseAnimation : public QObject

   102 {

   103 public:

   104     QDeclarativeMediaBaseAnimation(QDeclarativeMediaBase *media)

   105         : m_media(media)

   106     {

   107     }

   108 

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

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

   111 

   112 protected:

   113     void timerEvent(QTimerEvent *event)

   114     {

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

   116             event->accept();

   117 

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

   119                 emit m_media->positionChanged();

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

   121                 emit m_media->bufferProgressChanged();

   122         } else {

   123             QObject::timerEvent(event);

   124         }

   125     }

   126 

   127 private:

   128     QDeclarativeMediaBase *m_media;

   129     QBasicTimer m_timer;

   130 };

   131 

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

   133 {

   134     if (m_state == state)

   135         return;

   136 

   137     switch (state) {

   138     case QMediaPlayer::StoppedState: {

   139             emit stopped();

   140 

   141             if (m_playing) {

   142                 m_playing = false;

   143                 emit playingChanged();

   144             }

   145         }

   146         break;

   147     case QMediaPlayer::PausedState: {

   148             emit paused();

   149 

   150             if (!m_paused) {

   151                 m_paused = true;

   152                 emit pausedChanged();

   153             }

   154 

   155             if (m_state == QMediaPlayer::StoppedState)

   156                 emit started();

   157         }

   158         break;

   159     case QMediaPlayer::PlayingState: {

   160             if (m_state == QMediaPlayer::PausedState)

   161                 emit resumed();

   162             else

   163                 emit started();

   164 

   165            if (m_paused) {

   166                m_paused = false;

   167                emit pausedChanged();

   168            }

   169         }

   170         break;

   171     }

   172 

   173     // Check

   174     if (state == QMediaPlayer::PlayingState

   175             || m_status == QMediaPlayer::BufferingMedia

   176             || m_status == QMediaPlayer::StalledMedia) {

   177         m_animation->start();

   178     }

   179     else {

   180         m_animation->stop();

   181     }

   182 

   183     m_state = state;

   184 }

   185 

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

   187 {

   188     if (status != m_status) {

   189         m_status = status;

   190 

   191         switch (status) {

   192         case QMediaPlayer::LoadedMedia:

   193             emit loaded();

   194             break;

   195         case QMediaPlayer::BufferingMedia:

   196             emit buffering();

   197             break;

   198         case QMediaPlayer::BufferedMedia:

   199             emit buffered();

   200             break;

   201         case QMediaPlayer::StalledMedia:

   202             emit stalled();

   203             break;

   204         case QMediaPlayer::EndOfMedia:

   205             emit endOfMedia();

   206             break;

   207         default:

   208             break;

   209         }

   210 

   211         emit statusChanged();

   212 

   213         if (m_state == QMediaPlayer::PlayingState

   214                 || m_status == QMediaPlayer::BufferingMedia

   215                 || m_status == QMediaPlayer::StalledMedia) {

   216             m_animation->start();

   217         } else {

   218             m_animation->stop();

   219         }

   220     }

   221 }

   222 

   223 void QDeclarativeMediaBase::_q_metaDataChanged()

   224 {

   225     m_metaObject->metaDataChanged();

   226 }

   227 

   228 QDeclarativeMediaBase::QDeclarativeMediaBase()

   229     : m_paused(false)

   230     , m_playing(false)

   231     , m_autoLoad(true)

   232     , m_loaded(false)

   233     , m_muted(false)

   234     , m_position(0)

   235     , m_vol(1.0)

   236     , m_playbackRate(1.0)

   237     , m_mediaService(0)

   238     , m_playerControl(0)

   239     , m_mediaObject(0)

   240     , m_mediaProvider(0)

   241     , m_metaDataControl(0)

   242     , m_metaObject(0)

   243     , m_animation(0)

   244     , m_state(QMediaPlayer::StoppedState)

   245     , m_status(QMediaPlayer::NoMedia)

   246     , m_error(QMediaPlayer::ServiceMissingError)

   247 {

   248 }

   249 

   250 QDeclarativeMediaBase::~QDeclarativeMediaBase()

   251 {

   252 }

   253 

   254 void QDeclarativeMediaBase::shutdown()

   255 {

   256     delete m_metaObject;

   257     delete m_mediaObject;

   258 

   259     if (m_mediaProvider)

   260         m_mediaProvider->releaseService(m_mediaService);

   261 

   262     delete m_animation;

   263 

   264 }

   265 

   266 void QDeclarativeMediaBase::setObject(QObject *object)

   267 {

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

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

   270             m_playerControl = qobject_cast<QMediaPlayerControl *>(

   271                     m_mediaService->requestControl(QMediaPlayerControl_iid));

   272             m_metaDataControl = qobject_cast<QMetaDataReaderControl *>(

   273                     m_mediaService->requestControl(QMetaDataReaderControl_iid));

   274             m_mediaObject = new QDeclarativeMediaBaseObject(m_mediaService);

   275         }

   276     }

   277 

   278     if (m_playerControl) {

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

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

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

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

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

   284                 object, SIGNAL(sourceChanged()));

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

   286                 object, SIGNAL(durationChanged()));

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

   288                 object, SIGNAL(positionChanged()));

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

   290                 object, SIGNAL(volumeChanged()));

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

   292                 object, SIGNAL(mutedChanged()));

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

   294                 object, SIGNAL(bufferProgressChanged()));

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

   296                 object, SIGNAL(seekableChanged()));

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

   298                 object, SIGNAL(playbackRateChanged()));

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

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

   301 

   302         m_animation = new QDeclarativeMediaBaseAnimation(this);

   303         m_error = QMediaPlayer::NoError;

   304     } else {

   305         m_playerControl = new QDeclarativeMediaBasePlayerControl(object);

   306     }

   307 

   308     if (m_metaDataControl) {

   309         m_metaObject = new QMetaDataControlMetaObject(m_metaDataControl, object);

   310 

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

   312                 object, SLOT(_q_metaDataChanged()));

   313     }

   314 

   315     // Init

   316     m_playerControl->setVolume(m_vol * 100);

   317     m_playerControl->setMuted(m_muted);

   318     m_playerControl->setPlaybackRate(m_playbackRate);

   319 

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

   321         m_playerControl->setMedia(m_source, 0);

   322 

   323     if (m_paused)

   324         m_playerControl->pause();

   325     else if (m_playing)

   326         m_playerControl->play();

   327 

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

   329         m_playerControl->setPosition(m_position);

   330 }

   331 

   332 

   333 // Properties

   334 

   335 QUrl QDeclarativeMediaBase::source() const

   336 {

   337     return m_source;

   338 }

   339 

   340 void QDeclarativeMediaBase::setSource(const QUrl &url)

   341 {

   342     if (url == m_source)

   343         return;

   344 

   345     m_source = url;

   346     m_loaded = false;

   347     if (m_playerControl != 0 && m_autoLoad) {

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

   349             m_error = QMediaPlayer::NoError;

   350             m_errorString = QString();

   351 

   352             emit errorChanged();

   353         }

   354 

   355         m_playerControl->setMedia(m_source, 0);

   356         m_loaded = true;

   357     }

   358     else

   359         emit sourceChanged();

   360 }

   361 

   362 bool QDeclarativeMediaBase::isAutoLoad() const

   363 {

   364     return m_autoLoad;

   365 }

   366 

   367 void QDeclarativeMediaBase::setAutoLoad(bool autoLoad)

   368 {

   369     if (m_autoLoad == autoLoad)

   370         return;

   371 

   372     m_autoLoad = autoLoad;

   373     emit autoLoadChanged();

   374 }

   375 

   376 bool QDeclarativeMediaBase::isPlaying() const

   377 {

   378     return m_playing;

   379 }

   380 

   381 void QDeclarativeMediaBase::setPlaying(bool playing)

   382 {

   383     if (playing == m_playing)

   384         return;

   385 

   386     m_playing = playing;

   387     if (m_playerControl != 0) {

   388         if (m_playing) {

   389             if (!m_autoLoad && !m_loaded) {

   390                 m_playerControl->setMedia(m_source, 0);

   391                 m_playerControl->setPosition(m_position);

   392                 m_loaded = true;

   393             }

   394 

   395             if (!m_paused)

   396                 m_playerControl->play();

   397             else

   398                 m_playerControl->pause();

   399         }

   400         else if (m_state != QMediaPlayer::StoppedState)

   401             m_playerControl->stop();

   402     }

   403 

   404     emit playingChanged();

   405 }

   406 

   407 bool QDeclarativeMediaBase::isPaused() const

   408 {

   409     return m_paused;

   410 }

   411 

   412 void QDeclarativeMediaBase::setPaused(bool paused)

   413 {

   414     if (m_paused == paused)

   415         return;

   416 

   417     m_paused = paused;

   418     if (m_playerControl != 0) {

   419         if (!m_autoLoad && !m_loaded) {

   420             m_playerControl->setMedia(m_source, 0);

   421             m_playerControl->setPosition(m_position);

   422             m_loaded = true;

   423         }

   424 

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

   426             m_playerControl->pause();

   427         }

   428         else if (!m_paused && m_playing) {

   429             m_playerControl->play();

   430         }

   431     }

   432 

   433     emit pausedChanged();

   434 }

   435 

   436 int QDeclarativeMediaBase::duration() const

   437 {

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

   439 }

   440 

   441 int QDeclarativeMediaBase::position() const

   442 {

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

   444 }

   445 

   446 void QDeclarativeMediaBase::setPosition(int position)

   447 {

   448     if (m_position == position)

   449         return;

   450 

   451     m_position = position;

   452     if (m_playerControl != 0)

   453         m_playerControl->setPosition(m_position);

   454     else

   455         emit positionChanged();

   456 }

   457 

   458 qreal QDeclarativeMediaBase::volume() const

   459 {

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

   461 }

   462 

   463 void QDeclarativeMediaBase::setVolume(qreal volume)

   464 {

   465     if (m_vol == volume)

   466         return;

   467 

   468     m_vol = volume;

   469 

   470     if (m_playerControl != 0)

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

   472     else

   473         emit volumeChanged();

   474 }

   475 

   476 bool QDeclarativeMediaBase::isMuted() const

   477 {

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

   479 }

   480 

   481 void QDeclarativeMediaBase::setMuted(bool muted)

   482 {

   483     if (m_muted == muted)

   484         return;

   485 

   486     m_muted = muted;

   487 

   488     if (m_playerControl != 0)

   489         m_playerControl->setMuted(muted);

   490     else

   491         emit mutedChanged();

   492 }

   493 

   494 qreal QDeclarativeMediaBase::bufferProgress() const

   495 {

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

   497 }

   498 

   499 bool QDeclarativeMediaBase::isSeekable() const

   500 {

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

   502 }

   503 

   504 qreal QDeclarativeMediaBase::playbackRate() const

   505 {

   506     return m_playbackRate;

   507 }

   508 

   509 void QDeclarativeMediaBase::setPlaybackRate(qreal rate)

   510 {

   511     if (m_playbackRate == rate)

   512         return;

   513 

   514     m_playbackRate = rate;

   515 

   516     if (m_playerControl != 0)

   517         m_playerControl->setPlaybackRate(m_playbackRate);

   518     else

   519         emit playbackRateChanged();

   520 }

   521 

   522 QString QDeclarativeMediaBase::errorString() const

   523 {

   524     return m_errorString;

   525 }

   526 

   527 QT_END_NAMESPACE

   528