examples/QtQuick/videoapp/videoengine.cpp

/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation
**
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
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**     the names of its contributors may be used to endorse or promote
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** Description:  videoengine.cpp, source file for video player engine.
****************************************************************************/


// SYSTEM INCLUDE
#include <coecntrl.h>
#include <coemain.h>

// USER INCLUDES
#include "videoengine.h"
#include "videoplayerwrapper.h"

// Video file to be played.
_LIT(KDirVideos,"C:\\data\\Videos\\example_video.3gp");


CVideoPlayerEngine* CVideoPlayerEngine::NewL(VideoPlayerWrapper *aPlayerWrapper)
    {
    CVideoPlayerEngine* self = CVideoPlayerEngine::NewLC(aPlayerWrapper);
    CleanupStack::Pop(self);
    return self;
    }

CVideoPlayerEngine* CVideoPlayerEngine::NewLC(VideoPlayerWrapper *aPlayerWrapper)
    {
    CVideoPlayerEngine* self = new (ELeave) CVideoPlayerEngine();
    CleanupStack::PushL(self);
    self->ConstructL(aPlayerWrapper);
    return self;
    }

void CVideoPlayerEngine::ConstructL(VideoPlayerWrapper *aPlayerWrapper)
    {
    iPlayerWrapper = aPlayerWrapper;
    }

CVideoPlayerEngine::CVideoPlayerEngine() :
    iState(ENotInitialized)
    {
    }

CVideoPlayerEngine::~CVideoPlayerEngine()
    {
    if( iPlayer )
        {
        iPlayer->Close();
        delete iPlayer;
        iPlayer = NULL;
        }
    if( iVideoContainer )
        {
        delete iPlayer;
        iPlayer = NULL;
        }
    }

void CVideoPlayerEngine::InitL()
                   
    {
    iState = ENotInitialized;
    if (iPlayer)
        {
        delete iPlayer;
        iPlayer = NULL;
        };

    // Obtains a window on which video will be displayed.
    if ( ! iVideoContainer )
        {
          iVideoContainer = CVideoContainer::NewL();
        }

    iPlayer = CVideoPlayerUtility::NewL( *this, EMdaPriorityNormal, EMdaPriorityPreferenceNone,
                                            iVideoContainer->ClientWsSession(), iVideoContainer->ScreenDevice(),
                                            iVideoContainer->ClientWindow(), iVideoContainer->VideoRect(),  iVideoContainer->VideoRect());

    }

void CVideoPlayerEngine::OpenL()
    {
    TRAPD(unsupported, iPlayer->OpenFileL(KDirVideos));
    if ( unsupported != KErrNone )
         {
         _LIT(KOpenFailed, "Open failed");
         TBuf<24> message(KOpenFailed);
         iPlayerWrapper->printMessage(message);
         iPlayer->Close();
         delete iPlayer;
         iPlayer = NULL;
         User::Leave(unsupported);
         }
    }
void CVideoPlayerEngine::Play()
    {
    if(( iState == EInitialized)||( iState == EPaused ))
        {
        iPlayer->Play();
        iState = EPlaying;
        _LIT(KPlaying, "Video playing");
        TBuf<24> message(KPlaying);
        iPlayerWrapper->printMessage(message);
        }
    else
        {
        return;
        }
    }

void CVideoPlayerEngine::PauseL()
    {
    if( iState == EPlaying )
       {
        TRAPD(err,iPlayer->PauseL());
        if (err != KErrNone)
            {
            _LIT(KPausefailed,"Video Pause failed");
            TBuf<32> message(KPausefailed);
            iPlayerWrapper->printMessage(message);
            User::Leave(err);
            }
        else
            {
            iState = EPaused;
            _LIT(KPaused,"Video Paused");
            TBuf<32> message(KPaused);
            iPlayerWrapper->printMessage(message);
            }
        }
    else
        {
        return;
        }
    }

void CVideoPlayerEngine::Stop()
    {
    if( iState != EPlaying && iState != EPaused )
        {
        return;
        }
    iPlayer->Stop();
    iState = EStopped;
    _LIT(KStopped,"Video Playback stopped !!!");
    TBuf<32> message(KStopped);
    iPlayerWrapper->printMessage(message);
    iPlayer->Close();
    }

void CVideoPlayerEngine::SetVolume(TInt aValue)
    {
    if( iState )
    {
        TRAPD(err,iPlayer->SetVolumeL(aValue));
        if (err != KErrNone)
            {
            User::Leave(err);
            }
    }
    else
    {
        return;
    }

    }

void CVideoPlayerEngine::MvpuoOpenComplete(TInt aError)
    {
    if( aError == KErrNone )
        {
        _LIT(KFileOpen,"File Open Completed !!!");
        TBuf<24> message(KFileOpen);
        iPlayerWrapper->printMessage(message);
        iPlayer->Prepare();
        iState = EInitialized;
        }
    else
        {
        _LIT(KOpenComFailed,"File Open Complete failed !!!");
        TBuf<24> message(KOpenComFailed);
        iPlayerWrapper->printMessage(message);
        iPlayer->Close();
        iState = EStopped;
        //release resources
        if ( iPlayer )
            {
            delete iPlayer;
            iPlayer = NULL;
            };
        }
    }

void CVideoPlayerEngine::MvpuoPrepareComplete(TInt aError)
    {
    if( aError == KErrNone )
        {
        _LIT(KPrepareComplete,"Prepare Completed !!!");
        TBuf<24> message(KPrepareComplete);
        iPlayerWrapper->printMessage(message);
        }
    }

void CVideoPlayerEngine::MvpuoPlayComplete(TInt aError)
    {
    if( aError == KErrNone )
        {
        _LIT(KPlayComplete,"Playback Completed !!!");
        TBuf<24> message(KPlayComplete);
        iPlayerWrapper->printMessage(message);
        Stop();
        }
    else
        {
        _LIT(KPlayCompletefailed,"Playback Complete failed !!!");
        TBuf<24> message(KPlayCompletefailed);
        iPlayerWrapper->printMessage(message);
        }
    }

void CVideoPlayerEngine::MvpuoFrameReady(CFbsBitmap& /*aFrame*/,TInt /*aError*/)
    {
    }

void CVideoPlayerEngine::MvpuoEvent(const TMMFEvent& /*aEvent*/)
    {
    }

 
// End of file

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