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/* This file is part of the KDE project.
Copyright (C) 2009 Nokia Corporation 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_VIDEOPLAYER_DSA_H
#define PHONON_MMF_VIDEOPLAYER_DSA_H
#include "abstractvideoplayer.h"
QT_BEGIN_NAMESPACE
namespace Phonon
{
namespace MMF
{
/**
* @short Wrapper over the MMF video player utility (DSA version)
*
* This implementation is used on devices with the legacy graphics
* subsystem, which does not support surfaces. On such devices,
* video rendering is done via Direct Screen Access (DSA), whereby
* the video decoder writes directly to the framebuffer. To ensure
* that the window server and video decoder do not try to draw to
* the same screen region at the same time, the video subsystem
* first requests permission to perform DSA. If the window server
* needs to draw to this screen region (for example to display a
* message dialog), it first notifies the video subsystem that it
* must stop rendering to this region.
*
* @see SurfaceVideoPlayer
*/
class DsaVideoPlayer
: public AbstractVideoPlayer
{
Q_OBJECT
public:
// Factory function
static DsaVideoPlayer* create(MediaObject *parent = 0,
const AbstractPlayer *player = 0);
~DsaVideoPlayer();
public Q_SLOTS:
void videoWindowScreenRectChanged();
void suspendDirectScreenAccess();
void resumeDirectScreenAccess();
private:
DsaVideoPlayer(MediaObject *parent, const AbstractPlayer *player);
// AbstractVideoPlayer
void createPlayer();
void initVideoOutput();
void prepareCompleted();
void handleVideoWindowChanged();
void handleParametersChanged(VideoParameters parameters);
void startDirectScreenAccess();
bool stopDirectScreenAccess();
private:
bool m_dsaActive;
bool m_dsaWasActive;
// Absolute screen rectangle on which video is displayed
TRect m_videoScreenRect;
};
}
}
QT_END_NAMESPACE
#endif // !PHONON_MMF_VIDEOPLAYER_DSA_H
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