/*

* Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#include "cxedummycamera.h"

#if defined(CXE_USE_DUMMY_CAMERA) || defined(__WINSCW__)

#include <bitdev.h>

#include "cxutils.h"

// Disable warnings about unused arguments

#pragma warn_unusedarg off

namespace

{

    static const TSize IMAGE_CAPTURE_SIZES[] =

        {

        TSize(4000,3000),

        TSize(4000,2248),

        TSize(3264,2448),

        TSize(3264,1832),

        TSize(2592,1944),

        TSize(2592,1456),

        TSize(2048,1536),

        TSize(1600,1200),

        TSize(1280,960),

        TSize(1024,768),

        TSize(640,480)

        };

    static const int IMAGE_CAPTURE_SIZE_COUNT = sizeof(IMAGE_CAPTURE_SIZES)/sizeof(TSize);

    _LIT( PANICDUMMYCAMERA, "DummyCamera" );

}

CxeDummyCamera* CxeDummyCamera::NewL(MCameraObserver2& aObserver,TInt aCameraIndex,TInt aPriority, TInt aCameraVersion)

{

    return new (ELeave) CxeDummyCamera( aObserver, aCameraIndex, aPriority, aCameraVersion );

}

CxeDummyCamera::CxeDummyCamera(MCameraObserver2& aObserver,TInt aCameraIndex,TInt aPriority, TInt aCameraVersion)

: iObserver( aObserver ), iAdvancedSettings(0), iSnapshot(0), iStillImage(0), iImageProcessing(0)

{

    iCommandTimer = CPeriodic::NewL(0);

    iInfo.iMaxZoom = 5;

    iInfo.iMaxDigitalZoom = 5;

    iInfo.iMaxDigitalZoomFactor = 0;

    iInfo.iMaxZoomFactor = 0;

    iInfo.iMinZoomFactor = 0;

    iInfo.iMinZoom = 0;

    iInfo.iNumImageSizesSupported = IMAGE_CAPTURE_SIZE_COUNT;

}

CxeDummyCamera::~CxeDummyCamera()

    {

    delete iCommandTimer;

    delete iAdvancedSettings;

    delete iSnapshot;

    delete iStillImage;

    delete iImageProcessing;

    }

void CxeDummyCamera::doCommand( TCxeDummyCommand aCmd )

{

    TInt status = iCommandBuf.Insert( aCmd, 0 );

    if ( status != KErrNone )

        {

        User::Panic(PANICDUMMYCAMERA, 1);

        }

    if ( !iCommandTimer->IsActive() )

        {

        iCommandTimer->Start(100, 100, TCallBack(CxeDummyCamera::callBack, this));

        }

}

TInt CxeDummyCamera::callBack( TAny* aParam )

{

    CxeDummyCamera* self = (CxeDummyCamera*)aParam;

    return self->doHandleCallback();

}

void CxeDummyCamera::CaptureImage()

{

    doCommand( EProvideStillImage );

    if ( iSnapshot && iSnapshot->IsSnapshotActive() )

        {

        doCommand( EProvideSnapshot );

        }

}

void CxeDummyCamera::EnumerateCaptureSizes(TSize& aSize,TInt aSizeIndex,TFormat aFormat) const

{

    if(aSizeIndex < IMAGE_CAPTURE_SIZE_COUNT)

        {

        aSize = IMAGE_CAPTURE_SIZES[aSizeIndex];

        }

    else

        {

        aSize = TSize(0,0);

        }

}

TInt CxeDummyCamera::doHandleCallback()

{

    TCxeDummyCommand cmd = iCommandBuf[ 0 ];

    iCommandBuf.Remove( 0 );

    switch ( cmd )

        {

        case EReserve:

            {

            iState = EStReserved;

            TECAMEvent e( KUidECamEventReserveComplete, KErrNone );

            iObserver.HandleEvent( e );

            break;

            }

        case EPowerOn:

            {

            iState = EStPowerOn;

            TECAMEvent e( KUidECamEventPowerOnComplete, KErrNone );

            iObserver.HandleEvent( e );

            break;

            }

        case EProvideStillImage:

            {

            if ( !iStillImage )

                {

                iStillImage = new (ELeave) CxeDummyBuffer();

                }

            iObserver.ImageBufferReady(*iStillImage, KErrNone);

            break;

            }

        case EProvideSnapshot:

            {

            TECAMEvent e( KUidECamEventCameraSnapshot, KErrNone );

            iObserver.HandleEvent( e );

            break;

            }

        }

    if ( !iCommandBuf.Count() )

        {

        iCommandTimer->Cancel();

        }

    return KErrNone;

}

void CxeDummyCamera::Reserve()

{

    CX_DEBUG_ENTER_FUNCTION();

    iState = EStReserving;

    doCommand( EReserve );

    CX_DEBUG_EXIT_FUNCTION();

}

void CxeDummyCamera::Release()

{

    CX_DEBUG_ENTER_FUNCTION();

    iState = EStReleased;

    CX_DEBUG_EXIT_FUNCTION();

}

void CxeDummyCamera::PowerOn()

{

    iState = EStPoweringOn;

    doCommand( EPowerOn );

}

void CxeDummyCamera::PowerOff()

{

    iState = EStReserved;

}

TAny* CxeDummyCamera::CustomInterface(TUid aInterface)

    {

    CX_DEBUG_ENTER_FUNCTION();

    CX_DEBUG(("CxeDummyCamera::CustomInterface: request for interface uid %x", aInterface));

    if ( aInterface == KECamMCameraAdvancedSettingsUid )

        {

        CX_DEBUG(("Advanced settings custom interface requested"));

        if ( !iAdvancedSettings )

            {

            iAdvancedSettings = new ( ELeave ) CxeDummyAdvancedSettings(this);

            }

        CX_DEBUG_EXIT_FUNCTION();

        return static_cast<MCameraAdvancedSettings*>( iAdvancedSettings );

        }

    else if (aInterface == KECamMCameraAdvancedSettings3Uid)

        {

        CX_DEBUG(("Advanced settings 3 custom interface requested"));

        if (!iAdvancedSettings)

            {

            iAdvancedSettings = new (ELeave) CxeDummyAdvancedSettings(this);

            }

        CX_DEBUG_EXIT_FUNCTION();

        return static_cast<MCameraAdvancedSettings3*> (iAdvancedSettings);

        }

    else if ( aInterface == KECamMCameraSnapshotUid )

        {

        CX_DEBUG(("Snapshot custom interface requested"));

        if ( !iSnapshot )

            {

            iSnapshot = new ( ELeave ) CxeDummySnapshot();

            }

        CX_DEBUG_EXIT_FUNCTION();

        return static_cast<MCameraSnapshot*>( iSnapshot );

        }

    else if ( aInterface == KECamMCameraDirectViewFinderUid )

        {

        CX_DEBUG(("Direct viewfinder custom interface requested"));

        if( !iDirectViewfinder )

            {

            iDirectViewfinder = new ( ELeave ) CxeDummyDirectViewfinder();

            }

        return static_cast<MCameraDirectViewFinder*>( iDirectViewfinder );

        }

    else if ( aInterface == KECamMCameraImageProcessingUid )

        {

        CX_DEBUG(("Image processing custom interface requested"));

        if (!iImageProcessing )

            {

            iImageProcessing = new ( ELeave ) CxeDummyImageProcessing;

            }

        return static_cast<MCameraImageProcessing*>( iImageProcessing );

        }

    CX_DEBUG_EXIT_FUNCTION();

    return NULL;

    }

void CxeDummyBuffer::CreateBitmapL( const TSize& aSize )

    {

    CX_DEBUG_ENTER_FUNCTION();

    delete iBitmap;

    iBitmap = NULL;

    iBitmap = new (ELeave) CFbsBitmap();

    User::LeaveIfError( iBitmap->Create( aSize, EColor16MU ) );

    CFbsBitmapDevice* device = CFbsBitmapDevice::NewL( iBitmap );

    CleanupStack::PushL( device );

    CFbsBitGc* gc;

    User::LeaveIfError( device->CreateContext(gc) );

    CleanupStack::PushL(gc);

    const TInt gridsize = 16;

    gc->SetPenStyle( CGraphicsContext::ENullPen );

    gc->SetBrushStyle( CGraphicsContext::ESolidBrush );

    for ( TInt x = 0; x < aSize.iWidth/16; x++ )

        {

        for ( TInt y = 0; y < aSize.iWidth/16; y++ )

            {

            gc->SetBrushColor( ( ( x + y ) & 1 ) ? 0x00AAAAAA : 0x00888888 );

            gc->DrawRect( TRect( TPoint( x * 16, y * 16 ), TSize( gridsize, gridsize ) ) );

            }

        }

    CleanupStack::PopAndDestroy(gc);

    CleanupStack::PopAndDestroy(device);

    CX_DEBUG_EXIT_FUNCTION();

    }

void CxeDummySnapshot::PrepareSnapshotL(CCamera::TFormat aFormat, const TPoint& aPosition, const TSize& aSize, const TRgb& aBgColor, TBool aMaintainAspectRatio)

{

    CX_DEBUG_ENTER_FUNCTION();

    PrepareSnapshotL( aFormat, aSize, aMaintainAspectRatio );

    CX_DEBUG_EXIT_FUNCTION();

}

void CxeDummySnapshot::PrepareSnapshotL(CCamera::TFormat aFormat, const TSize& aSize, TBool aMaintainAspectRatio)

{

    CX_DEBUG_ENTER_FUNCTION();

    if ( !iBuffer )

        {

        iBuffer = new ( ELeave ) CxeDummyBuffer();

        }

    iBuffer->CreateBitmapL( aSize );

    CX_DEBUG_EXIT_FUNCTION();

}

// CxeDummyDirectViewfinder

CxeDummyDirectViewfinder::CxeDummyDirectViewfinder()

    : iState(CCamera::CCameraDirectViewFinder::EViewFinderInActive)

    {

    CX_DEBUG_IN_FUNCTION();

    }

CxeDummyDirectViewfinder::~CxeDummyDirectViewfinder()

    {

    CX_DEBUG_ENTER_FUNCTION();

    CX_DEBUG_EXIT_FUNCTION();

    }

void CxeDummyDirectViewfinder::Release()

    {

    iState = CCamera::CCameraDirectViewFinder::EViewFinderInActive;

    }

void CxeDummyDirectViewfinder::PauseViewFinderDirectL()

    {

    if( iState != CCamera::CCameraDirectViewFinder::EViewFinderActive )

        {

        User::Leave( KErrGeneral );

        }

    iState = CCamera::CCameraDirectViewFinder::EViewFinderPause;

    }

void CxeDummyDirectViewfinder::ResumeViewFinderDirectL()

    {

    if( iState != CCamera::CCameraDirectViewFinder::EViewFinderPause )

        {

        User::Leave( KErrGeneral );

        }

    iState = CCamera::CCameraDirectViewFinder::EViewFinderActive;

    }

CCamera::CCameraDirectViewFinder::TViewFinderState CxeDummyDirectViewfinder::ViewFinderState() const

    {

    return iState;

    }

// CxeDummyAdvancedSettings

CxeDummyAdvancedSettings::CxeDummyAdvancedSettings(CCamera* aCamera)

    : iCamera( aCamera )

{

    QT_TRANSLATE_SYMBIAN_LEAVE_TO_EXCEPTION(iNotificationTimer = CPeriodic::NewL(0));

    iZoomValue = 0;

}

CxeDummyAdvancedSettings::~CxeDummyAdvancedSettings()

{

    delete iNotificationTimer;

    iNotificationTimer = NULL;

    iClientNofications.Reset();

    iClientNofications.Close();

}

void CxeDummyAdvancedSettings::GetDigitalZoomStepsForStillL(RArray<TInt>& aDigitalZoomSteps, TValueInfo& aInfo, TInt aSizeIndex,

                CCamera::TFormat aFormat, TBool& aIsInfluencePossible) const

{

    aDigitalZoomSteps.Reset();

    aDigitalZoomSteps.AppendL(0);

    aDigitalZoomSteps.AppendL(1);

    aDigitalZoomSteps.AppendL(2);

    aDigitalZoomSteps.AppendL(3);

    aDigitalZoomSteps.AppendL(4);

    aDigitalZoomSteps.AppendL(5);

}

void CxeDummyAdvancedSettings::GetDigitalZoomStepsL(RArray<TInt>& aDigitalZoomSteps, TValueInfo& aInfo) const

{

    aDigitalZoomSteps.Reset();

    aDigitalZoomSteps.AppendL(0);

    aDigitalZoomSteps.AppendL(1);

    aDigitalZoomSteps.AppendL(2);

    aDigitalZoomSteps.AppendL(3);

    aDigitalZoomSteps.AppendL(4);

    aDigitalZoomSteps.AppendL(5);

}

TInt CxeDummyAdvancedSettings::SupportedFocusModes() const

{

    return CCamera::CCameraAdvancedSettings::EFocusModeAuto;

}

CCamera::CCameraAdvancedSettings::TFocusMode CxeDummyAdvancedSettings::FocusMode() const

{

    return iFocusMode;

}

void CxeDummyAdvancedSettings::SetFocusMode(CCamera::CCameraAdvancedSettings::TFocusMode aFocusMode)

{

    iFocusMode = aFocusMode;

    // notify client with relevant event..

    queueClientNotification(KUidECamEventCameraSettingFocusMode, KErrNone);

}

TInt CxeDummyAdvancedSettings::SupportedFocusRanges() const

{

    return CCamera::CCameraAdvancedSettings::EFocusRangeAuto

         | CCamera::CCameraAdvancedSettings::EFocusRangeHyperfocal

         | CCamera::CCameraAdvancedSettings::EFocusRangeInfinite

         | CCamera::CCameraAdvancedSettings::EFocusRangeMacro

         | CCamera::CCameraAdvancedSettings::EFocusRangeNormal

         | CCamera::CCameraAdvancedSettings::EFocusRangePortrait

         | CCamera::CCameraAdvancedSettings::EFocusRangeSuperMacro

         | CCamera::CCameraAdvancedSettings::EFocusRangeTele;

}

CCamera::CCameraAdvancedSettings::TFocusRange CxeDummyAdvancedSettings::FocusRange() const

{

    return iFocusRange;

}

void CxeDummyAdvancedSettings::SetFocusRange(CCamera::CCameraAdvancedSettings::TFocusRange aFocusRange)

{

    iFocusRange = aFocusRange;

    queueClientNotification(KUidECamEventCameraSettingFocusRange2, KErrNone);

}

TInt CxeDummyAdvancedSettings::SupportedAutoFocusTypes() const

{

    return CCamera::CCameraAdvancedSettings::EAutoFocusTypeSingle

         | CCamera::CCameraAdvancedSettings::EAutoFocusTypeOff;

}

CCamera::CCameraAdvancedSettings::TAutoFocusType CxeDummyAdvancedSettings::AutoFocusType() const

{

    return iFocusType;

}

void CxeDummyAdvancedSettings::SetAutoFocusType(CCamera::CCameraAdvancedSettings::TAutoFocusType aAutoFocusType)

{

    iFocusType = aAutoFocusType;

    queueClientNotification(KUidECamEventCameraSettingAutoFocusType2, KErrNone);

    // If AF set to OFF, remove any "optimal focus" events from earlier

    // started focusing.

    if (iFocusType == CCamera::CCameraAdvancedSettings::EAutoFocusTypeOff) {

        for (TInt i = iClientNofications.Count()-1; i >= 0; i--) {

             if (iClientNofications[i].iEventUid == KUidECamEventCameraSettingsOptimalFocus) {

                 iClientNofications.Remove(i);

             }

        }

    }

    else {

        // Otherwise queue optimal focus event for this focusing request.

        queueClientNotification(KUidECamEventCameraSettingsOptimalFocus, KErrNone);

    }

}

void CxeDummyAdvancedSettings::queueClientNotification(TUid aUid, TInt aStatus)

{

    CX_DEBUG_ENTER_FUNCTION();

    iClientNofications.Append(TCxeDummyNotification(aUid,aStatus));

    if (iNotificationTimer == NULL) {

        QT_TRANSLATE_SYMBIAN_LEAVE_TO_EXCEPTION(iNotificationTimer = CPeriodic::NewL(0));

    }

    if (!iNotificationTimer->IsActive()) {

        TCallBack cb(CxeDummyAdvancedSettings::clientNotificationCallback, this);

        iNotificationTimer->Start(100, 100, cb);

    }

    CX_DEBUG_EXIT_FUNCTION();

}

void CxeDummyAdvancedSettings::doClientNotification( )

{

    CX_DEBUG_ENTER_FUNCTION();

    const TInt count(iClientNofications.Count());

    if (count != 0) {

        const TCxeDummyNotification& notify(iClientNofications[count-1]);

        const TECAMEvent event(notify.iEventUid, notify.iStatus);

        iClientNofications.Remove(count-1);

        (static_cast<CxeDummyCamera*>(iCamera))->iObserver.HandleEvent(event);