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/* This file is part of the KDE project.
Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
This library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2.1 or 3 of the License.
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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PHONON_MMF_ABSTRACTVIDEOPLAYER_H
#define PHONON_MMF_ABSTRACTVIDEOPLAYER_H
#include <videoplayer.h> // from epoc32/include
#include <QSize>
#include "abstractmediaplayer.h"
#include "abstractvideooutput.h"
#include "defs.h"
QT_BEGIN_NAMESPACE
namespace Phonon
{
namespace MMF
{
/**
* @short ABC for classes which wrap the MMF video player utility
*
* On devices which use the legacy graphics subsystem which does not
* support surfaces, video rendering is done via Direct Screen Access using
* the CVideoPlayerUtility API. On devices with a graphics subsystem which
* does support surfaces, video rendering is done using the
* CVideoPlayerUtility2 API. Because CVideoPlayerUtility2 inherits from
* CVideoPlayerUtility, AbstractVideoPlayer holds a pointer to the latter.
*
* @see DsaVideoPlayer, SurfaceVideoPlayer
*/
class AbstractVideoPlayer
: public AbstractMediaPlayer
, public MVideoPlayerUtilityObserver
, public MVideoLoadingObserver
{
Q_OBJECT
public:
~AbstractVideoPlayer();
typedef CVideoPlayerUtility NativePlayer;
NativePlayer *nativePlayer() const;
// AbstractPlayer
virtual void doPlay();
virtual void doPause();
virtual void doStop();
virtual void doSeek(qint64 milliseconds);
virtual int setDeviceVolume(int mmfVolume);
virtual int openFile(const QString &fileName);
virtual int openFile(RFile &file);
virtual int openUrl(const QString &url);
virtual int openDescriptor(const TDesC8 &des);
virtual int bufferStatus() const;
virtual void doClose();
// MediaObjectInterface
virtual bool hasVideo() const;
virtual qint64 totalTime() const;
// AbstractPlayer
virtual void videoOutputChanged();
// AbstractMediaPlayer
virtual qint64 getCurrentTime() const;
virtual int numberOfMetaDataEntries() const;
virtual QPair<QString, QString> metaDataEntry(int index) const;
public Q_SLOTS:
void videoWindowChanged();
void aspectRatioChanged();
void scaleModeChanged();
protected:
AbstractVideoPlayer(MediaObject *parent, const AbstractPlayer *player);
void construct();
virtual void initVideoOutput();
void updateScaleFactors(const QSize &windowSize, bool apply = true);
// Called when a video parameter changes. If the underlying native API is
// ready to handle the change, it is propagated immediately, otherwise the
// change is recorded in m_pendingChanged and handled later by
// handlePendingParametersChanged().
void parametersChanged(VideoParameters parameter);
// Implementation must initialize the m_player pointer.
virtual void createPlayer() = 0;
// Called from the MvpuoPrepareComplete callback. Allows derived class to
// calculate clipping rectangles and scale factors prior to starting
// playback.
virtual void prepareCompleted() = 0;
// Called when native video window handle changes. Derived class may defer
// propagation of this change to the MMF video player utility by calling
// parametersChanged().
virtual void handleVideoWindowChanged() = 0;
// Called when the derived class must handle changes which have been made
// to video parameters such as window handle, screen rectangle and scale
// factors. Guaranteed to be called only when the underlying MMF video
// player object is ready to handle changes to these parameters.
virtual void handleParametersChanged(VideoParameters parameters) = 0;
private:
void getVideoClipParametersL(TInt aError);
// Called when native player API enters a state in which it is able to
// handle pending changes such as new video window handle, updated scale
// factors etc.
void handlePendingParametersChanged();
private:
// MVideoPlayerUtilityObserver
virtual void MvpuoOpenComplete(TInt aError);
virtual void MvpuoPrepareComplete(TInt aError);
virtual void MvpuoFrameReady(CFbsBitmap &aFrame, TInt aError);
virtual void MvpuoPlayComplete(TInt aError);
virtual void MvpuoEvent(const TMMFEvent &aEvent);
// MVideoLoadingObserver
virtual void MvloLoadingStarted();
virtual void MvloLoadingComplete();
protected:
QScopedPointer<NativePlayer> m_player;
// Not owned
RWsSession& m_wsSession;
CWsScreenDevice& m_screenDevice;
RWindowBase* m_window;
// Scaling factors for video display, expressed as percentages
TReal32 m_scaleWidth;
TReal32 m_scaleHeight;
// Dimensions of the video clip
QSize m_videoFrameSize;
private:
// Bitmask of parameters which have changed while the MMF video player
// object is not yet ready to receive these changes.
// See handlePendingParametersChanged().
VideoParameters m_pendingChanges;
// Duration of the video clip
qint64 m_totalTime;
};
}
}
QT_END_NAMESPACE
#endif
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