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.

Playback only works for certain file formats, as the Symbian MIME type
recognizer does not always work.  For example, playback of an audio
WAV resource file works, while playback of an MP3 resource file does
not.

Task-number: QTBUG-6562
Reviewed-by: Justin McPherson

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..3702560 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) {
+            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 opened");
+        }
+        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..b476535 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 +306,29 @@ 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()) {
+                    if (m_resource->isCompressed())
+                        errorMessage = tr("Error opening source: resource is compressed");
+                    else
+		        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 +427,16 @@ 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 11d2428..d70b38b 100644
--- a/src/3rdparty/phonon/phonon/mediasource.cpp
+++ b/src/3rdparty/phonon/phonon/mediasource.cpp
@@ -58,6 +58,7 @@ MediaSource::MediaSource(const QString &filename)
             d->type = Stream;
             d->ioDevice = new QFile(filename);
             d->setStream(new IODeviceStream(d->ioDevice, d->ioDevice));
+            d->url =  QUrl::fromLocalFile(fileInfo.absoluteFilePath());
 #else
             d->type = Invalid;
 #endif //QT_NO_PHONON_ABSTRACTMEDIASTREAM