cameraappcontroller.cpp

Symbian智能手机操作系统源代码值的参考_摄像头

/*
* ============================================================================
*  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"

// If you have a 3rd Edition device that provides support for the newer mixin 
// classes MCameraObserver2 and MCameraBuffer, you can include and use 
// CameraCaptureEngine_3rd_Ed.h instead of CameraCaptureEngine.h. Please note,
// however, that the CameraCaptureEngine_3rd_Ed implementation is only a 
// sample and has not been tested yet. Thus it might not work properly 
// without modifications.
//#include "CameraCaptureEngine_3rd_Ed.h"
#include "CameraCaptureEngine.h"

// Constants
const TInt KCompleteImageNameMaxLength = 40;
const TInt KFileNameIndexMaxLength = 5;
_LIT(KCameraInUse, "Camera in use by another app.");
_LIT(KSnapSoundFile, "Camera1a_2_8kHz.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),
    iSoundPlayerReady(EFalse)
    {
    }

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

	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();

    if ( iCameraCaptureEngine )
        delete iCameraCaptureEngine;
    if (iBitmapSnap)
        delete iBitmapSnap;
	if (iImagePath)
        delete iImagePath;
    if (iPath)
        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 values: N/A

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

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

	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()
    {
    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 )
    {
    if ( iContainer )
        {
        (STATIC_CAST(CCameraAppBaseContainer*,iContainer))->
            DrawImageNow( aFrame );
        }
    }

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

	void CCameraAppController::StopViewFinder()

	Description: Stops view finding
	Comments   :

    Return values: 

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

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

	void CCameraAppController::SnapL()

	Description: Gets the snapped image from Camera driver
	Comments   :

    Return values: N/A

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

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

	CFbsBitmap& CCameraAppController::GetSnappedImage() 

	Description: Gives snapped image to be displayed in PostExposure view
	Comments   :

    Return values: Snapped CFbsBitmap object reference