cameraappcontroller.cpp

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/*
* ============================================================================
*  Name     : CCameraAppController from CameraAppController.cpp
*  Part of  : CameraApp
*  Created  : 05/06/2006 by Forum Nokia
*  Version  : 2.0
*  Copyright: Nokia Corporation, 2006
* ============================================================================
*/

#include <AknViewAppUi.h>
#include <CameraApp.rsg>
#include <bautils.h>
#include <PathInfo.h>

#include "CameraAppController.h"
#include "CameraAppContainer.h"
#include "CameraAppBaseContainer.h"
#include "CameraAppView.h"
#include "CameraAppPortraitView.h"
#include "CameraAppAppUi.h"

#include "CameraCaptureEngine.h"

// Constants
const TInt KFileNameIndexMaxLength = 5;
_LIT(KCameraInUse, "Camera in use by another app.");
_LIT(KNoCamera, "Camera not available.");
_LIT(KSnapSoundFile, "Camera1a_2_8kHz.wav");
_LIT(KFocusedSoundFile, "focused.wav");
// For 2nd Edition emulator only
#ifdef __WINS__
_LIT(KEmulatorPath, "c:\\system\\Apps\\cameraapp\\");
#endif

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

	CCameraAppController::CCameraAppController()

	Description: C++ default constructor
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
CCameraAppController::CCameraAppController(CAknViewAppUi& aAppUi)
    :iAppUi( aAppUi ),
    iCameraMode( ECameraLandscapeMode ),
    iCameraCaptureEngine( 0 ),
    iContainer( 0 )
    {
    }

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

	void CCameraAppController::PowerOff()

	Description: powers off the camera
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CCameraAppController::PowerOff()
    {
    iCameraCaptureEngine->PowerOff();
    }

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

	CCameraAppController::~CCameraAppController()

	Description: destructor, free allocated resources
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
CCameraAppController::~CCameraAppController()
    {
    // Power off the camera
    PowerOff();

    delete iCameraCaptureEngine;
    delete iBitmapSnap;
    delete iImagePath;
    delete iPath;
    
    if (iSoundPlayer)
        {
        iSoundPlayer->Close();
        delete iSoundPlayer;
        }
    }

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

	void CCameraAppController::ConstructL()

	Description: Symbian OS second phase constructor
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CCameraAppController::ConstructL()
    {
    iEikEnv = CEikonEnv::Static();
    iPath = new(ELeave) TFileName;

    // Create the sound player here
    CreateSoundPlayerL();

    TFileName path = PathInfo::PhoneMemoryRootPath(); //Default 
    path.Append( PathInfo::ImagesPath() );
    iImagePath = HBufC::NewL( path.Length() );
    iImagePath->Des().Copy( path );
    }

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

	TCameraState CCameraAppController::CameraMode() const   

	Description: gets the camera mode
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
TCameraState CCameraAppController::CameraMode() const   
    {
    return iCameraMode;
    }

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

	void CCameraAppController::SetCameraMode(TCameraState aCameraMode)

	Description: Set the camera display mode
	Comments   :

    Return value: N/A

-----------------------------------------------------------------------------
*/
void CCameraAppController::SetCameraMode(TCameraState aCameraMode)
    {
    iCameraMode = aCameraMode;
    }


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

    void SetCaptureModeL(const TSize& aSize, TInt aFormat)
    
    Description: Set the capture mode,used for displaying information about 
                 image size/format
    
    Return value: N/A
         
-----------------------------------------------------------------------------
*/
void CCameraAppController::SetCaptureModeL(const TSize& aSize,
                                           TInt aFormat,
                                           TBool aAFSupported)
    {
    iCaptureFormat = aFormat;
    
    TBuf<32> text;
    text.Format( _L("[%1.1fM]"), TReal(aSize.iWidth * aSize.iHeight) / 1000000 );
    
    if( iCaptureFormat == CCamera::EFormatExif )
        {
        text.Append(_L("EXIF"));
        }
        
    if( aAFSupported )
        {
        text.Append(_L("/AF"));
        CCamAutoFocus::TAutoFocusRange range;
        iCameraCaptureEngine->FocusRange(range);
        switch( range )
            {            
            case CCamAutoFocus::ERangeMacro: 
                text.Append(_L("(m)")); 
                break;
            case CCamAutoFocus::ERangePortrait:
                text.Append(_L("(p)"));
                break;
            case CCamAutoFocus::ERangeNormal:
                text.Append(_L("(n)"));
                break;
            case CCamAutoFocus::ERangeInfinite:
                text.Append(_L("(i)"));
                break;
            default:
                break;
            }
        }
    
    CCameraAppBaseContainer* baseCon = 
        static_cast<CCameraAppBaseContainer*>(iContainer);
        
    baseCon->ShowCaptureModeL(text);
    }


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

    TBool IsPortraitModeSupported()
    
    Description: Checks whether the engine supports capturing in portrait
                 mode. Currently this is not possible when capturing in
                 EXIF JPEG format.
    
    Return value: TBool
         
-----------------------------------------------------------------------------
*/
TBool CCameraAppController::IsPortraitModeSupported()
    {
    return (iCaptureFormat != CCamera::EFormatExif);
    }


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

    TBool IsAutoFocusSupported()
    
    Description: Checks if AF is supported
    
    Return value: TBool
         
-----------------------------------------------------------------------------
*/
TBool CCameraAppController::IsAutoFocusSupported()
    {
    return iCameraCaptureEngine->IsAutoFocusSupported();
    }
    

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

	void CCameraAppController::SetFocusRangeL()
	
	Description: Sets the autofocus range. 

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CCameraAppController::SetFocusRangeL( CCamAutoFocus::TAutoFocusRange aRange )
    {  
    iCameraCaptureEngine->SetFocusRangeL( aRange );            
    }
    
/*
-----------------------------------------------------------------------------

	TDisplayMode CCameraAppController::DisplayMode() const

	Description: Returns default display mode
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
TDisplayMode CCameraAppController::DisplayMode() const
    {
    return iCameraCaptureEngine->DisplayMode();
    }

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

	void CCameraAppController::InitializeCameraL()     

	Description: Initialize still image capture engine
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CCameraAppController::InitializeCameraL(const TRect& aRect)     
    {
    if (!iCameraCaptureEngine)
        {
        iCameraCaptureEngine = CCameraCaptureEngine::NewL( *this, aRect );
    
        //Create snap image
        iBitmapSnap = new (ELeave) CWsBitmap(iEikEnv->WsSession());
        User::LeaveIfError( iBitmapSnap->Create(aRect.Size(), DisplayMode()));
        }
    }

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

	void CCameraAppController::ReleaseCamera()

	Description: releases a reserved camera
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CCameraAppController::ReleaseCamera()
    {
    iCameraCaptureEngine->ReleaseCamera();
    }

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

	void CCameraAppController::StartViewFinderL()

	Description: Starts the view finding operation 
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CCameraAppController::StartViewFinderL()
    {
    if(iCameraCaptureEngine->GetEngineState() == EEngineNoHardware)
        {
        HandleError( KErrHardwareNotAvailable );
        return;
        }
    
    if(iCameraCaptureEngine->IsViewFinderActive())
        return;

    iCameraCaptureEngine->SetMode( iCameraMode );
    iCameraCaptureEngine->StartViewFinderL();
    }


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

	void CCameraAppController::SetAppContainer(CCoeControl* aAppContainer, 
			TCameraViewIds aViewId)

	Description: Gives reference to Active view container to Controller
	Comments   :

    Return values: N/A

-----------------------------------------------------------------------------
*/
void CCameraAppController::SetAppContainer( CCoeControl* aAppContainer, 
										    TCameraViewIds aViewId)
    {
    iContainer = aAppContainer;
    iActiveView = aViewId;
    }

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

	const TDesC& CCameraAppController::ImagePath() const

	Description: Returns the complete path of the saved image
	Comments   :

    Return values: Returns the complete path of the saved image

-----------------------------------------------------------------------------
*/
const TDesC& CCameraAppController::ImagePath() const
    {
    return *iImagePath;
    }

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

	const TDesC& CCameraAppController::ImagePath() const

	Description: Set the actual bitmap size
	Comments   :

    Return values: 

-----------------------------------------------------------------------------
*/
void CCameraAppController::SetActualVFSize( const TSize& /*aSize*/ )
    {
    if ( iContainer )
        {
        (STATIC_CAST(CCameraAppContainer*,iContainer))->
            ReDrawOffScreenBitmap( );
        }
    }

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

	void CCameraAppController::ViewFinding( CFbsBitmap& aFrame )

	Description: Gets image from image capture engine, and displays it on 
				 screen, called by the capture engine to display the bitmap
	Comments   :

    Return values: 

-----------------------------------------------------------------------------
*/
void CCameraAppController::ViewFinding( CFbsBitmap& aFrame )
    {
    // skip frames if it was requested
    if ( iSkipFrames )
      {
      --iSkipFrames;      
      return;
      }
      
    if ( !iContainer )
        {
        return;
        }
        
   static_cast<CCameraAppBaseContainer*>(iContainer)->DrawImageNow( aFrame );        
   }

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

	void CCameraAppController::StopViewFinder()

	Description: Stops view finding
	Comments   :

    Return values: 

-----------------------------------------------------------------------------
*/
void CCameraAppController::StopViewFinder()
    {
    iCameraCaptureEngine->StopViewFinder();
    }

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