Blackberry: Add support for reading meta data in QMediaPlayer

Provide an implementation of QMetaDataReaderControl for the
QMediaPlayer.

Change-Id: I58c04e40ae3f07013450997410d0a379273c7bde
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>

src/plugins/blackberry/mediaplayer/bbmediaplayercontrol.cpp

@@ -39,6 +39,7 @@
 **
 ****************************************************************************/
 #include "bbmediaplayercontrol.h"
+#include "bbmetadatareadercontrol.h"
 #include "bbvideowindowcontrol.h"
 #include "bbutil.h"
 #include <QtCore/qabstracteventdispatcher.h>
@@ -515,6 +516,11 @@ void BbMediaPlayerControl::setVideoControl(BbVideoWindowControl *videoControl)
     m_videoControl = videoControl;
 }
 
+void BbMediaPlayerControl::setMetaDataReaderControl(BbMetaDataReaderControl *metaDataReaderControl)
+{
+    m_metaDataReaderControl = metaDataReaderControl;
+}
+
 bool BbMediaPlayerControl::nativeEventFilter(const QByteArray &eventType, void *message, long *result)
 {
     Q_UNUSED(eventType);
@@ -592,6 +598,9 @@ void BbMediaPlayerControl::updateMetaData()
     if (m_videoControl)
         m_videoControl->setMetaData(m_metaData);
 
+    if (m_metaDataReaderControl)
+        m_metaDataReaderControl->setMetaData(m_metaData);
+
     emit durationChanged(m_metaData.duration());
     emit audioAvailableChanged(m_metaData.hasAudio());
     emit videoAvailableChanged(m_metaData.hasVideo());

src/plugins/blackberry/mediaplayer/bbmediaplayercontrol.h

@@ -54,6 +54,7 @@ typedef struct mmrenderer_monitor mmrenderer_monitor_t;
 
 QT_BEGIN_NAMESPACE
 
+class BbMetaDataReaderControl;
 class BbVideoWindowControl;
 
 class BbMediaPlayerControl : public QMediaPlayerControl, public QAbstractNativeEventFilter
@@ -99,6 +100,7 @@ public:
     void stop() Q_DECL_OVERRIDE;
 
     void setVideoControl(BbVideoWindowControl *videoControl);
+    void setMetaDataReaderControl(BbMetaDataReaderControl *metaDataReaderControl);
     bool nativeEventFilter(const QByteArray &eventType, void *message, long *result) Q_DECL_OVERRIDE;
 
 private Q_SLOTS:
@@ -137,6 +139,7 @@ private:
     bool m_muted;
     qreal m_rate;
     QPointer<BbVideoWindowControl> m_videoControl;
+    QPointer<BbMetaDataReaderControl> m_metaDataReaderControl;
     BbMetaData m_metaData;
     int m_id;
     mmrenderer_monitor_t *m_eventMonitor;

src/plugins/blackberry/mediaplayer/bbmediaplayerservice.cpp

@@ -41,6 +41,7 @@
 #include "bbmediaplayerservice.h"
 
 #include "bbmediaplayercontrol.h"
+#include "bbmetadatareadercontrol.h"
 #include "bbvideowindowcontrol.h"
 
 QT_BEGIN_NAMESPACE
@@ -48,7 +49,8 @@ QT_BEGIN_NAMESPACE
 BbMediaPlayerService::BbMediaPlayerService(QObject *parent)
     : QMediaService(parent),
       m_videoWindowControl(0),
-      m_mediaPlayerControl(0)
+      m_mediaPlayerControl(0),
+      m_metaDataReaderControl(0)
 {
 }
 
@@ -68,6 +70,13 @@ QMediaControl *BbMediaPlayerService::requestControl(const char *name)
         }
         return m_mediaPlayerControl;
     }
+    else if (qstrcmp(name, QMetaDataReaderControl_iid) == 0) {
+        if (!m_metaDataReaderControl) {
+            m_metaDataReaderControl = new BbMetaDataReaderControl();
+            updateControls();
+        }
+        return m_metaDataReaderControl;
+    }
     else if (qstrcmp(name, QVideoWindowControl_iid) == 0) {
         if (!m_videoWindowControl) {
             m_videoWindowControl = new BbVideoWindowControl();
@@ -84,6 +93,8 @@ void BbMediaPlayerService::releaseControl(QMediaControl *control)
         m_videoWindowControl = 0;
     if (control == m_mediaPlayerControl)
         m_mediaPlayerControl = 0;
+    if (control == m_metaDataReaderControl)
+        m_metaDataReaderControl = 0;
     delete control;
 }
 
@@ -91,6 +102,9 @@ void BbMediaPlayerService::updateControls()
 {
     if (m_videoWindowControl && m_mediaPlayerControl)
         m_mediaPlayerControl->setVideoControl(m_videoWindowControl);
+
+    if (m_metaDataReaderControl && m_mediaPlayerControl)
+        m_mediaPlayerControl->setMetaDataReaderControl(m_metaDataReaderControl);
 }
 
 QT_END_NAMESPACE

src/plugins/blackberry/mediaplayer/bbmediaplayerservice.h

@@ -47,6 +47,7 @@
 QT_BEGIN_NAMESPACE
 
 class BbMediaPlayerControl;
+class BbMetaDataReaderControl;
 class BbVideoWindowControl;
 
 class BbMediaPlayerService : public QMediaService
@@ -64,6 +65,7 @@ private:
 
     QPointer<BbVideoWindowControl> m_videoWindowControl;
     QPointer<BbMediaPlayerControl> m_mediaPlayerControl;
+    QPointer<BbMetaDataReaderControl> m_metaDataReaderControl;
 };
 
 QT_END_NAMESPACE

src/plugins/blackberry/mediaplayer/bbmetadata.cpp

@@ -51,7 +51,16 @@ BbMetaData::BbMetaData()
     clear();
 }
 
+static const char * titleKey = "md_title_name";
+static const char * artistKey = "md_title_artist";
+static const char * commentKey = "md_title_comment";
+static const char * genreKey = "md_title_genre";
+static const char * yearKey = "md_title_year";
 static const char * durationKey = "md_title_duration";
+static const char * bitRateKey = "md_title_bitrate";
+static const char * sampleKey = "md_title_samplerate";
+static const char * albumKey = "md_title_album";
+static const char * trackKey = "md_title_track";
 static const char * widthKey = "md_video_width";
 static const char * heightKey = "md_video_height";
 static const char * mediaTypeKey = "md_title_mediatype";
@@ -102,6 +111,24 @@ bool BbMetaData::parse(const QString &contextName)
                 m_pixelWidth = value.toFloat();
             else if (key == pixelHeightKey)
                 m_pixelHeight = value.toFloat();
+            else if (key == titleKey)
+                m_title = value;
+            else if (key == artistKey)
+                m_artist = value;
+            else if (key == commentKey)
+                m_comment = value;
+            else if (key == genreKey)
+                m_genre = value;
+            else if (key == yearKey)
+                m_year = value.toInt();
+            else if (key == bitRateKey)
+                m_audioBitRate = value.toInt();
+            else if (key == sampleKey)
+                m_sampleRate = value.toInt();
+            else if (key == albumKey)
+                m_album = value;
+            else if (key == trackKey)
+                m_track = value.toInt();
         }
     }
 
@@ -116,6 +143,16 @@ void BbMetaData::clear()
     m_mediaType = -1;
     m_pixelWidth = 1;
     m_pixelHeight = 1;
+
+    m_title.clear();
+    m_artist.clear();
+    m_comment.clear();
+    m_genre.clear();
+    m_year = 0;
+    m_audioBitRate = 0;
+    m_sampleRate = 0;
+    m_album.clear();
+    m_track = 0;
 }
 
 qlonglong BbMetaData::duration() const
@@ -161,4 +198,64 @@ bool BbMetaData::hasAudio() const
     return (m_mediaType & mediaTypeAudioFlag);
 }
 
+QString BbMetaData::title() const
+{
+    return m_title;
+}
+
+QString BbMetaData::artist() const
+{
+    return m_artist;
+}
+
+QString BbMetaData::comment() const
+{
+    return m_comment;
+}
+
+QString BbMetaData::genre() const
+{
+    return m_genre;
+}
+
+int BbMetaData::year() const
+{
+    return m_year;
+}
+
+QString BbMetaData::mediaType() const
+{
+    if (hasVideo())
+        return QLatin1String("video");
+    else if (hasAudio())
+        return QLatin1String("audio");
+    else
+        return QString();
+}
+
+int BbMetaData::audioBitRate() const
+{
+    return m_audioBitRate;
+}
+
+int BbMetaData::sampleRate() const
+{
+    return m_sampleRate;
+}
+
+QString BbMetaData::album() const
+{
+    return m_album;
+}
+
+int BbMetaData::track() const
+{
+    return m_track;
+}
+
+QSize BbMetaData::resolution() const
+{
+    return QSize(width(), height());
+}
+
 QT_END_NAMESPACE

src/plugins/blackberry/mediaplayer/bbmetadata.h

@@ -42,6 +42,8 @@
 #define BBMETADATA_H
 
 #include <QtCore/qglobal.h>
+#include <QtCore/QSize>
+#include <QtCore/QString>
 
 QT_BEGIN_NAMESPACE
 
@@ -60,6 +62,18 @@ public:
     bool hasVideo() const;
     bool hasAudio() const;
 
+    QString title() const;
+    QString artist() const;
+    QString comment() const;
+    QString genre() const;
+    int year() const;
+    QString mediaType() const;
+    int audioBitRate() const;
+    int sampleRate() const;
+    QString album() const;
+    int track() const;
+    QSize resolution() const;
+
 private:
     qlonglong m_duration;
     int m_height;
@@ -67,6 +81,16 @@ private:
     int m_mediaType;
     float m_pixelWidth;
     float m_pixelHeight;
+
+    QString m_title;
+    QString m_artist;
+    QString m_comment;
+    QString m_genre;
+    int m_year;
+    int m_audioBitRate;
+    int m_sampleRate;
+    QString m_album;
+    int m_track;
 };
 
 QT_END_NAMESPACE

src/plugins/blackberry/mediaplayer/bbmetadatareadercontrol.cpp

@@ -0,0 +1,169 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Research In Motion
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include "bbmetadatareadercontrol.h"
+
+QT_BEGIN_NAMESPACE
+
+BbMetaDataReaderControl::BbMetaDataReaderControl(QObject *parent)
+    : QMetaDataReaderControl(parent)
+{
+}
+
+bool BbMetaDataReaderControl::isMetaDataAvailable() const
+{
+    return !availableMetaData().isEmpty();
+}
+
+QVariant BbMetaDataReaderControl::metaData(const QString &key) const
+{
+    if (key == QMediaMetaData::Title)
+        return m_metaData.title();
+    else if (key == QMediaMetaData::Author)
+        return m_metaData.artist();
+    else if (key == QMediaMetaData::Comment)
+        return m_metaData.comment();
+    else if (key == QMediaMetaData::Genre)
+        return m_metaData.genre();
+    else if (key == QMediaMetaData::Year)
+        return m_metaData.year();
+    else if (key == QMediaMetaData::MediaType)
+        return m_metaData.mediaType();
+    else if (key == QMediaMetaData::Duration)
+        return m_metaData.duration();
+    else if (key == QMediaMetaData::AudioBitRate)
+        return m_metaData.audioBitRate();
+    else if (key == QMediaMetaData::SampleRate)
+        return m_metaData.sampleRate();
+    else if (key == QMediaMetaData::AlbumTitle)
+        return m_metaData.album();
+    else if (key == QMediaMetaData::TrackNumber)
+        return m_metaData.track();
+    else if (key == QMediaMetaData::Resolution)
+        return m_metaData.resolution();
+
+    return QVariant();
+}
+
+QStringList BbMetaDataReaderControl::availableMetaData() const
+{
+    QStringList metaData;
+
+    if (!m_metaData.title().isEmpty())
+        metaData << QMediaMetaData::Title;
+    if (!m_metaData.artist().isEmpty())
+        metaData << QMediaMetaData::Author;
+    if (!m_metaData.comment().isEmpty())
+        metaData << QMediaMetaData::Comment;
+    if (!m_metaData.genre().isEmpty())
+        metaData << QMediaMetaData::Genre;
+    if (m_metaData.year() != 0)
+        metaData << QMediaMetaData::Year;
+    if (!m_metaData.mediaType().isEmpty())
+        metaData << QMediaMetaData::MediaType;
+    if (m_metaData.duration() != 0)
+        metaData << QMediaMetaData::Duration;
+    if (m_metaData.audioBitRate() != 0)
+        metaData << QMediaMetaData::AudioBitRate;
+    if (m_metaData.sampleRate() != 0)
+        metaData << QMediaMetaData::SampleRate;
+    if (!m_metaData.album().isEmpty())
+        metaData << QMediaMetaData::AlbumTitle;
+    if (m_metaData.track() != 0)
+        metaData << QMediaMetaData::TrackNumber;
+    if (m_metaData.resolution().isValid())
+        metaData << QMediaMetaData::Resolution;
+
+    return metaData;
+}
+
+void BbMetaDataReaderControl::setMetaData(const BbMetaData &data)
+{
+    const BbMetaData oldMetaData = m_metaData;
+    const bool oldMetaDataAvailable = isMetaDataAvailable();
+
+    m_metaData = data;
+
+    bool changed = false;
+    if (m_metaData.title() != oldMetaData.title()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::Title, m_metaData.title());
+    } else if (m_metaData.artist() != oldMetaData.artist()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::Author, m_metaData.artist());
+    } else if (m_metaData.comment() != oldMetaData.comment()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::Comment, m_metaData.comment());
+    } else if (m_metaData.genre() != oldMetaData.genre()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::Genre, m_metaData.genre());
+    } else if (m_metaData.year() != oldMetaData.year()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::Year, m_metaData.year());
+    } else if (m_metaData.mediaType() != oldMetaData.mediaType()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::MediaType, m_metaData.mediaType());
+    } else if (m_metaData.duration() != oldMetaData.duration()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::Duration, m_metaData.duration());
+    } else if (m_metaData.audioBitRate() != oldMetaData.audioBitRate()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::AudioBitRate, m_metaData.audioBitRate());
+    } else if (m_metaData.sampleRate() != oldMetaData.sampleRate()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::SampleRate, m_metaData.sampleRate());
+    } else if (m_metaData.album() != oldMetaData.album()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::AlbumTitle, m_metaData.album());
+    } else if (m_metaData.track() != oldMetaData.track()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::TrackNumber, m_metaData.track());
+    } else if (m_metaData.resolution() != oldMetaData.resolution()) {
+        changed = true;
+        emit metaDataChanged(QMediaMetaData::Resolution, m_metaData.resolution());
+    }
+
+    if (changed)
+        emit metaDataChanged();
+
+    const bool metaDataAvailable = isMetaDataAvailable();
+    if (metaDataAvailable != oldMetaDataAvailable)
+        emit metaDataAvailableChanged(metaDataAvailable);
+}

src/plugins/blackberry/mediaplayer/bbmetadatareadercontrol.h

@@ -0,0 +1,68 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Research In Motion
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef BBMETADATAREADERCONTROL_H
+#define BBMETADATAREADERCONTROL_H
+
+#include "bbmetadata.h"
+#include <qmetadatareadercontrol.h>
+
+QT_BEGIN_NAMESPACE
+
+class BbMetaDataReaderControl : public QMetaDataReaderControl
+{
+    Q_OBJECT
+public:
+    explicit BbMetaDataReaderControl(QObject *parent = 0);
+
+    bool isMetaDataAvailable() const Q_DECL_OVERRIDE;
+
+    QVariant metaData(const QString &key) const Q_DECL_OVERRIDE;
+    QStringList availableMetaData() const Q_DECL_OVERRIDE;
+
+    void setMetaData(const BbMetaData &data);
+
+private:
+    BbMetaData m_metaData;
+};
+
+QT_END_NAMESPACE
+
+#endif

src/plugins/blackberry/mediaplayer/mediaplayer.pri

@@ -4,6 +4,7 @@ HEADERS += \
     $$PWD/bbmediaplayercontrol.h \
     $$PWD/bbmediaplayerservice.h \
     $$PWD/bbmetadata.h \
+    $$PWD/bbmetadatareadercontrol.h \
     $$PWD/bbutil.h \
     $$PWD/bbvideowindowcontrol.h
 
@@ -11,6 +12,7 @@ SOURCES += \
     $$PWD/bbmediaplayercontrol.cpp \
     $$PWD/bbmediaplayerservice.cpp \
     $$PWD/bbmetadata.cpp \
+    $$PWD/bbmetadatareadercontrol.cpp \
     $$PWD/bbutil.cpp \
     $$PWD/bbvideowindowcontrol.cpp