Added support to Phonon MMF backend for playback of Qt resource files

The backend accesses the resource file path via MediaSource::url().
A small patch to Phonon was required to enable this, because by
default, Phonon passes a QIODevice, rather than the resource file
path, to the backend.

The backend uses this path to create a QResource object, through which
the memory buffer into which the resource file has been read can be
accessed.  This buffer is wrapped in a Symbian 8-bit descriptor and
passed to the OpenDesL() function of the appropriate MMF client
utility API.

Task-number: QTBUG-6562

12 files changed, 123 insertions, 20 deletions

diff --git a/src/3rdparty/phonon/mmf/abstractmediaplayer.cpp b/src/3rdparty/phonon/mmf/abstractmediaplayer.cpp
index be2a568..bca0891 100644
--- a/src/3rdparty/phonon/mmf/abstractmediaplayer.cpp
+++ b/src/3rdparty/phonon/mmf/abstractmediaplayer.cpp
@@ -16,6 +16,7 @@ along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 */
 
+#include <QResource>
 #include <QUrl>
 
 #include "abstractmediaplayer.h"
@@ -216,9 +217,10 @@ void MMF::AbstractMediaPlayer::doSetTickInterval(qint32 interval)
     TRACE_EXIT_0();
 }
 
-void MMF::AbstractMediaPlayer::open(const MediaSource &source, RFile& file)
+void MMF::AbstractMediaPlayer::open()
 {
-    TRACE_CONTEXT(AbstractMediaPlayer::setFileSource, EAudioApi);
+    TRACE_CONTEXT(AbstractMediaPlayer::open, EAudioApi);
+    const MediaSource source = m_parent->source();
     TRACE_ENTRY("state %d source.type %d", privateState(), source.type());
 
     close();
@@ -229,7 +231,9 @@ void MMF::AbstractMediaPlayer::open(const MediaSource &source, RFile& file)
 
     switch (source.type()) {
     case MediaSource::LocalFile: {
-        symbianErr = openFile(file);
+        RFile *const file = m_parent->file();
+        Q_ASSERT(file);
+        symbianErr = openFile(*file);
         if (KErrNone != symbianErr)
             errorMessage = tr("Error opening file");
         break;
@@ -237,9 +241,10 @@ void MMF::AbstractMediaPlayer::open(const MediaSource &source, RFile& file)
 
     case MediaSource::Url: {
         const QUrl url(source.url());
-
         if (url.scheme() == QLatin1String("file")) {
-            symbianErr = openFile(file);
+            RFile *const file = m_parent->file();
+            Q_ASSERT(file);
+            symbianErr = openFile(*file);
             if (KErrNone != symbianErr)
                 errorMessage = tr("Error opening file");
         } else {
@@ -251,6 +256,19 @@ void MMF::AbstractMediaPlayer::open(const MediaSource &source, RFile& file)
         break;
     }
 
+    case MediaSource::Stream: {
+        QResource *const resource = m_parent->resource();
+        if (resource && resource->isValid()) {
+            m_buffer.Set(resource->data(), resource->size());
+            symbianErr = openDescriptor(m_buffer);
+            if (KErrNone != symbianErr)
+                errorMessage = tr("Error opening resource");
+        } else {
+            errorMessage = tr("Error opening source: resource not valid");
+        }
+        break;
+    }
+
     // Other source types are handled in MediaObject::createPlayer
 
     // Protection against adding new media types and forgetting to update this switch
diff --git a/src/3rdparty/phonon/mmf/abstractmediaplayer.h b/src/3rdparty/phonon/mmf/abstractmediaplayer.h
index 7d28caf..e795ecb 100644
--- a/src/3rdparty/phonon/mmf/abstractmediaplayer.h
+++ b/src/3rdparty/phonon/mmf/abstractmediaplayer.h
@@ -47,7 +47,7 @@ protected:
     AbstractMediaPlayer(MediaObject *parent, const AbstractPlayer *player);
 
 public:
-    virtual void open(const Phonon::MediaSource&, RFile&);
+    virtual void open();
 
     // MediaObjectInterface
     virtual void play();
@@ -70,6 +70,7 @@ protected:
     virtual int setDeviceVolume(int mmfVolume) = 0;
     virtual int openFile(RFile& file) = 0;
     virtual int openUrl(const QString& url) = 0;
+    virtual int openDescriptor(const TDesC8 &des) = 0;
     virtual int bufferStatus() const = 0;
 
     void updateMetaData();
@@ -123,6 +124,9 @@ private:
     bool                        m_prefinishMarkSent;
     bool                        m_aboutToFinishSent;
 
+    // Used for playback of resource files
+    TPtrC8                      m_buffer;
+
     QMultiMap<QString, QString> m_metaData;
 
 };
diff --git a/src/3rdparty/phonon/mmf/abstractplayer.h b/src/3rdparty/phonon/mmf/abstractplayer.h
index 30d5243..dd98c7c 100644
--- a/src/3rdparty/phonon/mmf/abstractplayer.h
+++ b/src/3rdparty/phonon/mmf/abstractplayer.h
@@ -26,8 +26,6 @@ along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "abstractvideooutput.h"
 
-class RFile;
-
 QT_BEGIN_NAMESPACE
 
 namespace Phonon
@@ -54,7 +52,7 @@ class AbstractPlayer : public QObject
 public:
     AbstractPlayer(const AbstractPlayer *player);
 
-    virtual void open(const Phonon::MediaSource&, RFile&) = 0;
+    virtual void open() = 0;
     virtual void close() = 0;
 
     // MediaObjectInterface (implemented)
diff --git a/src/3rdparty/phonon/mmf/abstractvideoplayer.cpp b/src/3rdparty/phonon/mmf/abstractvideoplayer.cpp
index 9ea4d18..fb20bea 100644
--- a/src/3rdparty/phonon/mmf/abstractvideoplayer.cpp
+++ b/src/3rdparty/phonon/mmf/abstractvideoplayer.cpp
@@ -144,6 +144,12 @@ int MMF::AbstractVideoPlayer::openUrl(const QString &url)
     return err;
 }
 
+int MMF::AbstractVideoPlayer::openDescriptor(const TDesC8 &des)
+{
+    TRAPD(err, m_player->OpenDesL(des));
+    return err;
+}
+
 int MMF::AbstractVideoPlayer::bufferStatus() const
 {
     int result = 0;
diff --git a/src/3rdparty/phonon/mmf/abstractvideoplayer.h b/src/3rdparty/phonon/mmf/abstractvideoplayer.h
index d854793..3ff3c75 100644
--- a/src/3rdparty/phonon/mmf/abstractvideoplayer.h
+++ b/src/3rdparty/phonon/mmf/abstractvideoplayer.h
@@ -66,6 +66,7 @@ public:
     virtual int setDeviceVolume(int mmfVolume);
     virtual int openFile(RFile &file);
     virtual int openUrl(const QString &url);
+    virtual int openDescriptor(const TDesC8 &des);
     virtual int bufferStatus() const;
     virtual void close();
 
diff --git a/src/3rdparty/phonon/mmf/audioplayer.cpp b/src/3rdparty/phonon/mmf/audioplayer.cpp
index f49e898..7c8b9bd 100644
--- a/src/3rdparty/phonon/mmf/audioplayer.cpp
+++ b/src/3rdparty/phonon/mmf/audioplayer.cpp
@@ -137,6 +137,12 @@ int MMF::AudioPlayer::openUrl(const QString& /*url*/)
     return 0;
 }
 
+int MMF::AudioPlayer::openDescriptor(const TDesC8 &des)
+{
+    TRAPD(err, m_player->OpenDesL(des));
+    return err;
+}
+
 int MMF::AudioPlayer::bufferStatus() const
 {
     int result = 0;
diff --git a/src/3rdparty/phonon/mmf/audioplayer.h b/src/3rdparty/phonon/mmf/audioplayer.h
index 0eb8bb7..e43cadd 100644
--- a/src/3rdparty/phonon/mmf/audioplayer.h
+++ b/src/3rdparty/phonon/mmf/audioplayer.h
@@ -67,6 +67,7 @@ typedef CMdaAudioPlayerUtility NativePlayer;
     virtual int setDeviceVolume(int mmfVolume);
     virtual int openFile(RFile& file);
     virtual int openUrl(const QString& url);
+    virtual int openDescriptor(const TDesC8 &des);
     virtual int bufferStatus() const;
     virtual void close();
 
diff --git a/src/3rdparty/phonon/mmf/dummyplayer.cpp b/src/3rdparty/phonon/mmf/dummyplayer.cpp
index d39ef76..ba75b02 100644
--- a/src/3rdparty/phonon/mmf/dummyplayer.cpp
+++ b/src/3rdparty/phonon/mmf/dummyplayer.cpp
@@ -92,7 +92,7 @@ qint64 MMF::DummyPlayer::totalTime() const
     return 0;
 }
 
-void MMF::DummyPlayer::open(const Phonon::MediaSource &, RFile &)
+void MMF::DummyPlayer::open()
 {
 
 }
diff --git a/src/3rdparty/phonon/mmf/dummyplayer.h b/src/3rdparty/phonon/mmf/dummyplayer.h
index 9d45696..5b00411 100644
--- a/src/3rdparty/phonon/mmf/dummyplayer.h
+++ b/src/3rdparty/phonon/mmf/dummyplayer.h
@@ -57,7 +57,7 @@ public:
     virtual qint64 totalTime() const;
 
     // AbstractPlayer
-    virtual void open(const Phonon::MediaSource&, RFile&);
+    virtual void open();
     virtual void close();
     virtual void doSetTickInterval(qint32 interval);
 };
diff --git a/src/3rdparty/phonon/mmf/mediaobject.cpp b/src/3rdparty/phonon/mmf/mediaobject.cpp
index d264377..e16bdf3 100644
--- a/src/3rdparty/phonon/mmf/mediaobject.cpp
+++ b/src/3rdparty/phonon/mmf/mediaobject.cpp
@@ -34,6 +34,7 @@ along with this library.  If not, see <http://www.gnu.org/licenses/>.
 #include "mediaobject.h"
 
 #include <QDir>
+#include <QResource>
 #include <QUrl>
 
 QT_BEGIN_NAMESPACE
@@ -52,6 +53,8 @@ using namespace Phonon::MMF;
 MMF::MediaObject::MediaObject(QObject *parent) : MMF::MediaNode::MediaNode(parent)
                                                , m_recognizerOpened(false)
                                                , m_nextSourceSet(false)
+                                               , m_file(0)
+                                               , m_resource(0)
 {
     m_player.reset(new DummyPlayer());
 
@@ -68,7 +71,12 @@ MMF::MediaObject::~MediaObject()
     TRACE_CONTEXT(MediaObject::~MediaObject, EAudioApi);
     TRACE_ENTRY_0();
 
-    m_file.Close();
+    delete m_resource;
+
+    if (m_file)
+        m_file->Close();
+    delete m_file;
+
     m_fileServer.Close();
     m_recognizer.Close();
 
@@ -122,12 +130,13 @@ MMF::MediaType MMF::MediaObject::fileMediaType
 
         const QHBufC fileNameSymbian(QDir::toNativeSeparators(fileName));
 
-        m_file.Close();
-        TInt err = m_file.Open(m_fileServer, *fileNameSymbian, EFileRead | EFileShareReadersOnly);
+        Q_ASSERT(!m_file);
+        m_file = new RFile;
+        TInt err = m_file->Open(m_fileServer, *fileNameSymbian, EFileRead | EFileShareReadersOnly);
 
         if (KErrNone == err) {
             TDataRecognitionResult recognizerResult;
-            err = m_recognizer.RecognizeData(m_file, recognizerResult);
+            err = m_recognizer.RecognizeData(*m_file, recognizerResult);
             if (KErrNone == err) {
                 const TPtrC mimeType = recognizerResult.iDataType.Des();
                 result = Utils::mimeTypeToMediaType(mimeType);
@@ -142,6 +151,23 @@ MMF::MediaType MMF::MediaObject::fileMediaType
     return result;
 }
 
+MMF::MediaType MMF::MediaObject::bufferMediaType(const uchar *data, qint64 size)
+{
+    TRACE_CONTEXT(MediaObject::bufferMediaType, EAudioInternal);
+    MediaType result = MediaTypeUnknown;
+    if (openRecognizer()) {
+        TDataRecognitionResult recognizerResult;
+        const TPtrC8 des(data, size);
+        const TInt err = m_recognizer.RecognizeData(des, recognizerResult);
+        if (KErrNone == err) {
+            const TPtrC mimeType = recognizerResult.iDataType.Des();
+            result = Utils::mimeTypeToMediaType(mimeType);
+        } else {
+            TRACE("RApaLsSession::RecognizeData error %d", err);
+        }
+    }
+    return result;
+}
 
 //-----------------------------------------------------------------------------
 // MediaObjectInterface
@@ -228,9 +254,17 @@ void MMF::MediaObject::setSource(const MediaSource &source)
 
 void MMF::MediaObject::switchToSource(const MediaSource &source)
 {
+    if (m_file)
+        m_file->Close();
+    delete m_file;
+    m_file = 0;
+
+    delete m_resource;
+    m_resource = 0;
+
     createPlayer(source);
     m_source = source;
-    m_player->open(m_source, m_file);
+    m_player->open();
     emit currentSourceChanged(m_source);
 }
 
@@ -272,10 +306,25 @@ void MMF::MediaObject::createPlayer(const MediaSource &source)
 
     case MediaSource::Invalid:
     case MediaSource::Disc:
-    case MediaSource::Stream:
         errorMessage = tr("Error opening source: type not supported");
         break;
 
+    case MediaSource::Stream:
+        {
+            const QString fileName = source.url().toLocalFile();
+            if (fileName.startsWith(QLatin1String(":/")) || fileName.startsWith(QLatin1String("qrc://"))) {
+                Q_ASSERT(!m_resource);
+                m_resource = new QResource(fileName);
+                if (m_resource->isValid())
+                    mediaType = bufferMediaType(m_resource->data(), m_resource->size());
+                else
+                    errorMessage = tr("Error opening source: resource not valid");
+            } else {
+                errorMessage = tr("Error opening source: type not supported");
+            }
+        }
+        break;
+
     case MediaSource::Empty:
         TRACE_0("Empty media source");
         break;
@@ -374,6 +423,16 @@ void MMF::MediaObject::volumeChanged(qreal volume)
     m_player->volumeChanged(volume);
 }
 
+RFile* MMF::MediaObject::file() const
+{
+    return m_file;
+}
+
+QResource* MMF::MediaObject::resource() const
+{
+    return m_resource;
+}
+
 //-----------------------------------------------------------------------------
 // MediaNode
 //-----------------------------------------------------------------------------
diff --git a/src/3rdparty/phonon/mmf/mediaobject.h b/src/3rdparty/phonon/mmf/mediaobject.h
index f15eb21..5399e27 100644
--- a/src/3rdparty/phonon/mmf/mediaobject.h
+++ b/src/3rdparty/phonon/mmf/mediaobject.h
@@ -33,6 +33,8 @@ along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 QT_BEGIN_NAMESPACE
 
+class QResource;
+
 namespace Phonon
 {
 namespace MMF
@@ -87,6 +89,9 @@ public:
 
     void setVideoOutput(AbstractVideoOutput* videoOutput);
 
+    RFile* file() const;
+    QResource* resource() const;
+
 public Q_SLOTS:
     void volumeChanged(qreal volume);
     void switchToNextSource();
@@ -117,6 +122,7 @@ private:
 
     // Audio / video media type recognition
     MediaType fileMediaType(const QString& fileName);
+    MediaType bufferMediaType(const uchar *data, qint64 size);
     // TODO: urlMediaType function
 
     static qint64 toMilliSeconds(const TTimeIntervalMicroSeconds &);
@@ -132,9 +138,8 @@ private:
     MediaSource                         m_nextSource;
     bool                                m_nextSourceSet;
 
-    // Storing the file handle here to work around KErrInUse error
-    // from MMF player utility OpenFileL functions
-    RFile                               m_file;
+    RFile*                              m_file;
+    QResource*                          m_resource;
 
     QScopedPointer<AbstractPlayer>      m_player;
 
diff --git a/src/3rdparty/phonon/phonon/mediasource.cpp b/src/3rdparty/phonon/phonon/mediasource.cpp
index be22dc3..925ff32 100644
--- a/src/3rdparty/phonon/phonon/mediasource.cpp
+++ b/src/3rdparty/phonon/phonon/mediasource.cpp
@@ -58,6 +58,11 @@ MediaSource::MediaSource(const QString &filename)
             d->type = Stream;
             d->ioDevice = new QFile(filename);
             d->setStream(new IODeviceStream(d->ioDevice, d->ioDevice));
+#ifdef Q_OS_SYMBIAN
+            // On Symbian, we need to access the resource buffer directly, rather than
+            // via QFile indirection
+            d->url =  QUrl::fromLocalFile(fileInfo.absoluteFilePath());
+#endif
 #else
             d->type = Invalid;
 #endif //QT_NO_PHONON_ABSTRACTMEDIASTREAM