vrexvideocontainer.cpp

symbian s60 有关音频的代码实例,供参考

/*
* ============================================================================
*  Name     : CVRexVideoContainer from VRexVideoContainer.cpp
*  Part of  : Video Example
*  Created  : 30/08/2006 by Forum  Nokia
*  Implementation notes:
*  Version  : 2.0
*  Copyright: Nokia Corporation, 2006
* ============================================================================
*/

// INCLUDE FILES
#include <eikmenup.h>
#include <documenthandler.h>
#include <apmstd.h>
#include <aknnavi.h>
#include <aknnavide.h>
#include <stringloader.h>

#include "VRexVideoContainer.h"
#include "VRexNaviDecoratorTime.h"
#include "VRexViewFinder.h"
#include <avkon.hrh>
#include <avkon.rsg>
#include <VRex.rsg>
#include "VRex.hrh"

const TInt KBufSize = 16;

// ================= MEMBER FUNCTIONS =======================

// ---------------------------------------------------------
// CVRexVideoContainer::ConstructL(const TRect& aRect)
// EPOC two phased constructor
// ---------------------------------------------------------
//
void CVRexVideoContainer::ConstructL(const TRect& aRect,
    CVRexVideoView* aView, CVRexEngine* aEngine)
    {
    iEngine = aEngine;
    iView = aView;

    CreateWindowL();

    // Show tabs for main views from resources
    CEikStatusPane* sp = iEikonEnv->AppUiFactory()->StatusPane();
    iNaviPane = (CAknNavigationControlContainer *)sp->
        ControlL(TUid::Uid(EEikStatusPaneUidNavi));

	iTimeNavi =  CreateTimeNaviL();
	iNaviPane->PushL(*iTimeNavi);

    // Read time format strings from AVKON resource
    iMinSecFormatString =
        iEikonEnv->AllocReadResourceL(R_QTN_TIME_DURAT_MIN_SEC);

    iHourMinSecFormatString =
        iEikonEnv->AllocReadResourceL(R_QTN_TIME_DURAT_LONG);


    	// Create video view finder
	iFinder = new (ELeave) CVideoViewFinder();
	iFinder->SetContainerWindowL(*this);
	iFinder->ConstructL(0);	// Use the first camera

    // Set window size
    SetRect(aRect);

	// Set up the video player rectangle
	iVideoRect = Rect();
	TPoint point = PositionRelativeToScreen();
	iVideoRect.iTl.iX += point.iX;
	iVideoRect.iTl.iY += point.iY;
	iVideoRect.iBr.iX += point.iX;
	iVideoRect.iBr.iY += point.iY;
	iVideoRect.Shrink(1, 1);

    ActivateL();

    }

// Destructor
CVRexVideoContainer::~CVRexVideoContainer()
    {
    delete iTimeNavi;
	iTimeNavi = NULL;

    delete iMinSecFormatString;
    iMinSecFormatString = NULL;

    delete iHourMinSecFormatString;
    iHourMinSecFormatString = NULL;

   	if(iFinder)
		{
		delete iFinder;
		iFinder = NULL;
		}
    }

// ---------------------------------------------------------
// CVRexVideoContainer::SizeChanged()
// Called by framework when the view size is changed
// ---------------------------------------------------------
//
void CVRexVideoContainer::SizeChanged()
    {
    if(iFinder)
		{
		iFinder->SetRect(Rect());
		}
    }

// ---------------------------------------------------------
// CVRexVideoContainer::CountComponentControls() const
// ---------------------------------------------------------
//
TInt CVRexVideoContainer::CountComponentControls() const
    {
    return 1; // return nbr of controls inside this container
    }

// ---------------------------------------------------------
// CVRexVideoContainer::ComponentControl(TInt aIndex) const
// ---------------------------------------------------------
//
CCoeControl* CVRexVideoContainer::ComponentControl(TInt aIndex) const
    {
    switch ( aIndex )
        {
        case 0:
         	return iFinder;
        default:
            return NULL;
        }
    }

// ---------------------------------------------------------
// CVRexVideoContainer::Draw(const TRect& aRect) const
// ---------------------------------------------------------
//
void CVRexVideoContainer::Draw(const TRect& aRect) const
    {
    CWindowGc& gc = SystemGc();
    gc.SetPenStyle( CGraphicsContext::ENullPen );
    gc.SetBrushColor( KRgbGray );
    gc.SetBrushStyle( CGraphicsContext::ESolidBrush );
    gc.DrawRect( aRect );
    }

// ---------------------------------------------------------
// CVRexVideoContainer::HandleControlEventL(
//     CCoeControl* aControl,TCoeEvent aEventType)
// ---------------------------------------------------------
//
void CVRexVideoContainer::HandleControlEventL(
    CCoeControl* /*aControl*/,TCoeEvent /*aEventType*/)
    {
    // Add your control event handler code here
    }

/*
-----------------------------------------------------------------------------

	CAknNavigationDecorator* CVRexVideoContainer::CreateTimeNaviL()

	Description: This method creates time display navigation decorator.
	Comments   :

    Return values: CAknNavigationDecorator object pointer

-----------------------------------------------------------------------------
*/
CAknNavigationDecorator* CVRexVideoContainer::CreateTimeNaviL()
	{
    CVideoNaviDecoratorTime* timeNavi = CVideoNaviDecoratorTime::NewL();
    CleanupStack::PushL(timeNavi);

    CAknNavigationDecorator* decoratedFolder =
        CAknNavigationDecorator::NewL(iNaviPane, timeNavi,
                                 CAknNavigationDecorator::ENotSpecified);
    CleanupStack::Pop(timeNavi); // timeNavi, decoratedFolder owns it now.

    CleanupStack::PushL(decoratedFolder);
    decoratedFolder->SetContainerWindowL(*iNaviPane);
    timeNavi->SetContainerWindowL(*decoratedFolder);
    CleanupStack::Pop(decoratedFolder); // decoratedFolder

    decoratedFolder->MakeScrollButtonVisible(EFalse);

    return decoratedFolder;
	}

/*
-----------------------------------------------------------------------------

	void CVRexVideoContainer::SetNaviLabelL(const TDesC &aLabel)

	Description: This method sets navigation decorator label.
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CVRexVideoContainer::SetNaviLabelL(const TDesC &aLabel)
	{
    CVideoNaviDecoratorTime* timeNavi =
        static_cast<CVideoNaviDecoratorTime*>(iTimeNavi->DecoratedControl());

	timeNavi->SetLabelL(aLabel);
	}

/*
-----------------------------------------------------------------------------

	TKeyResponse CVRexVideoContainer::OfferKeyEventL(const TKeyEvent& aKeyEvent,
    TEventCode aType)

	Description: This method handles key events.
	Comments   :

    Return values: TKeyResponse

-----------------------------------------------------------------------------
*/
TKeyResponse CVRexVideoContainer::OfferKeyEventL(
    const TKeyEvent& aKeyEvent,TEventCode /*aType*/)
    {

    // See if we have a selection
    TInt code = aKeyEvent.iCode;
    switch(code)
        {
		// is navigator button pressed
    	case EKeyOK:
			{
			if(iEngine->EngineState()==CVRexEngine::EPreview)
				{
				iView->DoRecordL();
				return (EKeyWasConsumed);
				}
			else if(iEngine->EngineState()==CVRexEngine::EPlay)
				{
				if(iEngine->iVPlayer->State() == CVideoPlayerAdapter::EPlaying)
					iView->DoPauseL();
				else
					iView->DoResumeL();

				return (EKeyWasConsumed);
				}
			else if (iEngine->EngineState()==CVRexEngine::ERecord)
				{
				iView->DoStopL();
				return (EKeyWasConsumed);
				}
			else
				return (EKeyWasConsumed);
			}
        default:
        	break;
        }
	return EKeyWasNotConsumed;
    }

/*
-----------------------------------------------------------------------------

	void CVRexVideoContainer::InitControllerCompletedL(TInt aError)

	Description: Controller initialization completed.
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CVRexVideoContainer::InitControllerCompletedL(TInt /*aError*/)
    {
   	// Play the video
	iEngine->iVPlayer->PlayL();
    }

/*
-----------------------------------------------------------------------------

	void CVRexVideoContainer::PlayCompletedL(TInt aError)

	Description: Video clip playback completed.
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CVRexVideoContainer::PlayCompletedL(TInt /*aError*/)
    {
	// The play has been completed, we need to refresh the display now.
	DrawNow();
	SetNaviLabelL(KNullDesC);

	// Refresh the directory listing
	iView->HandleCommandL(EVRexCmdAppReturn);
    }

/*
-----------------------------------------------------------------------------

	void CVRexVideoContainer::RecordCompletedL(TInt aError)

	Description: Video clip record completed.
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CVRexVideoContainer::RecordCompletedL(TInt /*aError*/)
    {
    iFinder->Stop();
	// The recording has been completed, we need to refresh the display now.
	DrawNow();
	SetNaviLabelL(KNullDesC);

	// Refresh the directory listing
	iView->HandleCommandL(EVRexCmdAppReturn);
    }

 /*
-----------------------------------------------------------------------------

	void CVRexVideoContainer::PlaybackPositionChangedL(TInt64 aPlaybackPosInSeconds,
												TInt64 aTotalLengthInSeconds)

	Description: Video clip position changed.
	Comments   : If aTotalLenght is 0, only position is displayed (used in
				 reporting position in recording or if total length is not
				 known)

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CVRexVideoContainer::PlaybackPositionChangedL(TInt64 aPlaybackPosInSeconds,
	 										TInt64 aTotalLengthInSeconds)
    {
    TTime posTime = TTime(aPlaybackPosInSeconds*KMPOneSecond);
    TTime durTime = TTime(aTotalLengthInSeconds*KMPOneSecond);

    TBuf<KBufSize> pos;
    TBuf<KBufSize> dur;

    if(aTotalLengthInSeconds > 0 && aTotalLengthInSeconds < KOneHourInSeconds)
       {
       // Format time to user readable format. (min:sec)
       posTime.FormatL(pos, *iMinSecFormatString);
       durTime.FormatL(dur, *iMinSecFormatString);
       }
    else
       {
       // Format time to user readable format. (hour:min:sec)
       posTime.FormatL(pos, *iHourMinSecFormatString);
       aTotalLengthInSeconds = 0;
       }

    // If duration greater than 0, show postion in 00:00/00:00 format
    if (aTotalLengthInSeconds > 0)
        {
        CDesCArrayFlat* strings = new (ELeave) CDesCArrayFlat(2);
        CleanupStack::PushL(strings);
        strings->AppendL(pos); //First string (position)
        strings->AppendL(dur); //Second string (duration)
        HBufC* stringholder = StringLoader::LoadLC(R_VREX_NAVI_TIME,*strings,iEikonEnv);
        static_cast<CVideoNaviDecoratorTime*>
        	(iTimeNavi->DecoratedControl())->SetLabelL(*stringholder);
        CleanupStack::PopAndDestroy(stringholder);
        CleanupStack::PopAndDestroy(strings);
        }
    else // Show position in 00:00:00 format
        {
        static_cast<CVideoNaviDecoratorTime*>
        	(iTimeNavi->DecoratedControl())->SetLabelL(pos);
        }
    }

// End of file