/*

* Copyright (c) 2005 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:  Manipulates the virtual orientation of the spectator.

*

*/

// INCLUDE FILES

#include <jdebug.h>

#include <e32math.h>

#include "cammsemcspectatororientationcontrol.h"

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

// -----------------------------------------------------------------------------

// CAMMSEMCSpectatorOrientationControl::NewLC

// Two-phased constructor.

// -----------------------------------------------------------------------------

CAMMSEMCSpectatorOrientationControl* CAMMSEMCSpectatorOrientationControl::NewLC(

    CMMAPlayer* aPlayer)

{

    CAMMSEMCSpectatorOrientationControl* self =

        new(ELeave)CAMMSEMCSpectatorOrientationControl(aPlayer);

    CleanupStack::PushL(self);

    return self;

}

// Destructor

CAMMSEMCSpectatorOrientationControl::~CAMMSEMCSpectatorOrientationControl()

{

    DEBUG("AMMS::CAMMSEMCSpectatorOrientationControl::~CAMMSEMCSpectatorOrientationControl");

    // Perform DeallocateControl, if the state change has not yet performed it.

    DeallocateControl();

}

// -----------------------------------------------------------------------------

// CAMMSEMCSpectatorOrientationControl::PrepareControlL

// Function which is called after the correct state is set in Player.

// -----------------------------------------------------------------------------

//

void CAMMSEMCSpectatorOrientationControl::PrepareControlL()

{

    // Perform the action only for the first time, skip if called afterwards

    if (!iMListenerOrientationControl)

    {

        DEBUG("AMMS::CAMMSEMCSpectatorOrientationControl::PrepareControlL");

        //Create Orientation Effect Control

        iStreamControl = (static_cast<CMMAEMCAudioPlayer*>(iMMAPlayer))->StreamControl();

        iFactory = (static_cast<CMMAEMCAudioPlayer*>(iMMAPlayer))->MMFactory();

        MEffectControl* temp(NULL);

        User::LeaveIfError(iFactory->CreateEffectControl(KListenerOrientationEffectControl, temp));

        iMListenerOrientationControl  = static_cast<MListenerOrientationControl*>(temp);

        User::LeaveIfError(iStreamControl->AddEffect(*iMListenerOrientationControl));

        iMListenerOrientationControl->Enable();

    }

}

// -----------------------------------------------------------------------------

// CAMMSEMCSpectatorOrientationControl::DeallocateControl

// Function which is called after the correct state is set in Player.

// -----------------------------------------------------------------------------

//

void CAMMSEMCSpectatorOrientationControl::DeallocateControl()

{

    if (iMListenerOrientationControl)

    {

        DEBUG("AMMS::CAMMSEMCSpectatorOrientationControl::DeallocateControl");

        // Orientation for Listener can be disabled or enabled

        iMListenerOrientationControl->Disable();

        //return the control to factory

        MEffectControl* temp = iMListenerOrientationControl;

        iStreamControl->RemoveEffect(*temp);

        // Delete the Effect

        MEffectControl* tempCtrl = iMListenerOrientationControl;

        iFactory->DeleteEffectControl(tempCtrl);

        iMListenerOrientationControl = NULL;

    }

}

const TDesC& CAMMSEMCSpectatorOrientationControl::ClassName() const

{

    return KAMMSEMCSpectatorOrientationControl;

}

// -----------------------------------------------------------------------------

// CAMMSEMCSpectatorOrientationControl::SetOrientationL

// Turns the object to the new orientation.

// -----------------------------------------------------------------------------

void CAMMSEMCSpectatorOrientationControl::SetOrientationL(

    TInt aHeading,

    TInt aPitch,

    TInt aRoll)

{

    // Sets the Heading, Pitch, Roll values for the source/listener orientation.

    // Parameters are given in thousandths of radians.

    // SourceOrientationBase/ListenerLocationBase :

    //

    // NOTE: Effect API uses thousandths of radians for all three parameters,

    // but JSR234 uses degrees.

    //

    // From e32Math.h: The multiplying factor to convert degrees to radians.

    DEBUG_INT3("AMMS::CAMMSEMCSpectatorOrientationControl::SetOrientationL: %d, %d, %d",

               aHeading, aPitch, aRoll);

    TInt32 convertedHeading = (TInt32)(aHeading * KDegToRad *

                                       1000);   // CSI: 47 Effect API uses thousands of radians #

    TInt32 convertedPitch = (TInt32)(aPitch * KDegToRad *

                                     1000);   // CSI: 47 Effect API uses thousands of radians #

    TInt32 convertedRoll = (TInt32)(aRoll * KDegToRad *

                                    1000);   // CSI: 47 Effect API uses thousands of radians #

    DEBUG_INT3("AMMS::CAMMSEMCSpectatorOrientationControl::SetOrientationL: %d, %d, %d",

               convertedHeading, convertedPitch, convertedRoll);

    TInt err = iMListenerOrientationControl->SetOrientation(

                   convertedHeading, convertedPitch, convertedRoll);

    DEBUG_INT("AMMS::CAMMSEMCSpectatorOrientationControl::SetOrientationL(3 arg.) err = %d",err);

    // Apply updated settings to EMC API.

    iMListenerOrientationControl->Apply();

}

// -----------------------------------------------------------------------------

// CAMMSEMCSpectatorOrientationControl::SetOrientationL

// Turns the object to the new orientation.

// -----------------------------------------------------------------------------

void CAMMSEMCSpectatorOrientationControl::SetOrientationL(

    TInt aFrontX, TInt aFrontY, TInt aFrontZ,

    TInt aAboveX, TInt aAboveY, TInt aAboveZ)

{

    // Check in debug build that parameters are not zero vectors.

    __ASSERT_DEBUG(((aFrontX != 0) ||

                    (aFrontY != 0) ||

                    (aFrontZ != 0)) &&

                   ((aAboveX != 0) ||

                    (aAboveY != 0) ||

                    (aAboveZ != 0)),

                   User::Invariant());

    // Check in debug build that vectors are not parallel.

    // Two vectors are parallel if their cross product is zero vector.

    // Cross product of vectors a1*i + a2*j + a3*k and b1*i + b2*j + b3*k :

    // (a2*b3 - a3*b2)i + (a3*b1 - a1*b3)j + (a1*b2 - a2*b1)k

    __ASSERT_DEBUG(

        ((aFrontY * aAboveZ) - (aFrontZ * aAboveY) != 0) ||

        ((aFrontZ * aAboveX) - (aFrontX * aAboveZ) != 0) ||

        ((aFrontX * aAboveY) - (aFrontY * aAboveX) != 0),

        User::Invariant());

    // Sets the Front and Above vectors for the orientation of the source/listener.

    DEBUG_INT3("AMMS::CAMMSEMCSpectatorOrientationControl::SetOrientationL: Front %d, %d, %d",

               aFrontX, aFrontY, aFrontZ);

    DEBUG_INT3("AMMS::CAMMSEMCSpectatorOrientationControl::SetOrientationL: Above %d, %d, %d",

               aAboveX, aAboveY, aAboveZ);

    TInt err = iMListenerOrientationControl->SetOrientationVectors(

                   (TInt32)aFrontX, (TInt32)aFrontY, (TInt32)aFrontZ,

                   (TInt32)aAboveX, (TInt32)aAboveY, (TInt32)aAboveZ);

    DEBUG_INT("AMMS::CAMMSEMCSpectatorOrientationControl::SetOrientationL(6 arg.) err = %d",err);

    // Apply updated settings to EMC API.

    iMListenerOrientationControl->Apply();

}

// -----------------------------------------------------------------------------

// CAMMSEMCSpectatorOrientationControl::OrientationVectors

// Gets the orientation of the object using two vectors.

// -----------------------------------------------------------------------------

void CAMMSEMCSpectatorOrientationControl::OrientationVectors(

    TInt& aFrontX, TInt& aFrontY, TInt& aFrontZ,

    TInt& aAboveX, TInt& aAboveY, TInt& aAboveZ)

{

    // Gets the orientation of the source.

    iMListenerOrientationControl->OrientationVectors(

        aFrontX, aFrontY, aFrontZ, aAboveX, aAboveY, aAboveZ);

}

// -----------------------------------------------------------------------------

// CAMMSEMCSpectatorOrientationControl::CAMMSEMCSpectatorOrientationControl

// C++ default constructor can NOT contain any code, that

// might leave.

// -----------------------------------------------------------------------------

CAMMSEMCSpectatorOrientationControl::CAMMSEMCSpectatorOrientationControl(

    CMMAPlayer* aPlayer)

        : CAMMSOrientationControl(aPlayer)

{

    iMMAPlayer = aPlayer;

}

//  End of File