--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsoundextensions/effects/LocationBase/src/LocationBase.cpp	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,257 @@
+/*
+* Copyright (c) 2004 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:   Implementation of the Location effect base class
+*
+*/
+
+
+
+
+// INCLUDE FILES
+
+#ifdef _DEBUG
+#include <e32svr.h>
+#endif
+
+#include <LocationBase.h>
+#include <e32math.h>
+#include <math.h>
+
+
+//360 degrees:
+#define TWO_PI 6283
+//180 degrees:
+#define PI 3142
+//90 degrees:
+#define QUARTER_PI 1570
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CLocation::CLocation
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CLocation::CLocation()
+    : 	iLocationData(0,0,0,0,0,0),
+    	iDataPckgTo(iLocationData),
+    	iDataPckgFrom(iLocationData)
+    {
+    }
+
+// Destructor
+EXPORT_C CLocation::~CLocation()
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CLocation::LocationCartesian
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CLocation::LocationCartesian(
+	TInt32& aX, TInt32& aY, TInt32& aZ )
+	{
+	aX = iLocationData.iXCoordinate;
+	aY = iLocationData.iYCoordinate;
+	aZ = iLocationData.iZCoordinate;
+	}
+
+// -----------------------------------------------------------------------------
+// CLocation::LocationSpherical
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CLocation::LocationSpherical(
+	TInt32& aAzimuth, TInt32& aElevation, TInt32& aRadius  )
+	{
+	aAzimuth = iLocationData.iAzimuth;
+	aElevation = iLocationData.iElevation;
+	aRadius = iLocationData.iRadius;
+	}
+
+// -----------------------------------------------------------------------------
+// CLocation::SetLocationCartesianL
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CLocation::SetLocationCartesianL(
+	TInt32& aX, TInt32& aY, TInt32& aZ )
+	{
+	iLocationData.iXCoordinate = aX;
+	iLocationData.iYCoordinate = aY;
+	iLocationData.iZCoordinate = aZ;
+
+
+    TReal SqrtXYZ = 0, squareX = 0, squareY = 0, squareZ = 0;
+    Math::Pow(squareX, aX, 2);
+    Math::Pow(squareY, aY, 2);
+    Math::Pow(squareZ, aZ, 2);
+    TReal sum = squareX + squareY + squareZ; 
+    Math::Sqrt(SqrtXYZ, sum);
+        
+  
+    //Singularity region 
+
+       if(!((aX==0) && (aZ==0))) //was aY
+       {
+
+            TReal zDividedByXAtan = atan2 ((TReal)-aX, (TReal)-aZ);
+            
+            if (zDividedByXAtan > 0)
+	          iLocationData.iAzimuth = - (TInt32)(zDividedByXAtan * 1000 + 0.5); // minus sign added (shouldn't affect the result since it is compensated three rows above, but to be sure...)
+            else
+ 	          iLocationData.iAzimuth = - (TInt32)(zDividedByXAtan * 1000 - 0.5); // minus sign added (shouldn't affect the result since it is compensated three rows above, but to be sure...)
+             
+       }
+	// else { we are exactly on Y-axis and therefore azimuth is undefined; let's use the previous azimuth value instead } 
+
+ 
+       if (!((aX ==0) && (aY == 0) && (aZ == 0))) 
+       {
+
+         TReal result;
+         TReal yDividedBySqrtXYZ = aY/SqrtXYZ; 
+         User::LeaveIfError(Math::ASin(result, yDividedBySqrtXYZ)); //was ACos
+
+         if (result > 0)
+           iLocationData.iElevation = (TInt32) (result * 1000 + 0.5);
+         else
+           iLocationData.iElevation = (TInt32) (result * 1000 - 0.5);
+           
+       }
+	   // else { we are exactly in origin and therefore elevation is undefined; let's use the previous elevation value instead } 
+      
+       iLocationData.iRadius= (TInt32) (SqrtXYZ + 0.5);
+  
+  
+      while(iLocationData.iElevation > PI) 
+       { 
+	   iLocationData.iElevation = iLocationData.iElevation - TWO_PI; 
+       }
+    
+      if(iLocationData.iElevation > QUARTER_PI) 
+       {
+	   iLocationData.iElevation = iLocationData.iElevation - (iLocationData.iElevation - QUARTER_PI) * 2;
+	   iLocationData.iAzimuth = iLocationData.iAzimuth + PI;
+       }
+
+      while(iLocationData.iElevation < -PI) 
+       {
+	   iLocationData.iElevation = iLocationData.iElevation + TWO_PI;
+       }
+      if(iLocationData.iElevation < -QUARTER_PI) 
+       {
+	   iLocationData.iElevation = iLocationData.iElevation + (QUARTER_PI - iLocationData.iElevation) * 2;
+	   iLocationData.iAzimuth = iLocationData.iAzimuth + PI;
+       }
+    
+      while (iLocationData.iAzimuth < 0)
+	    iLocationData.iAzimuth = iLocationData.iAzimuth + TWO_PI;
+      while (iLocationData.iAzimuth > TWO_PI)
+	   iLocationData.iAzimuth = iLocationData.iAzimuth - TWO_PI;
+	   
+	}
+
+// -----------------------------------------------------------------------------
+// CLocation::SetLocationSphericalL
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CLocation::SetLocationSphericalL(
+	TInt32& aAzimuth, TInt32& aElevation, TInt32& aRadius  )
+	{
+	
+     while(aElevation > PI) 
+      { 
+         aElevation = aElevation - TWO_PI; 
+      }
+    
+     if(aElevation > QUARTER_PI) 
+       {
+	   aElevation = aElevation - (aElevation - QUARTER_PI) * 2;
+	   aAzimuth = aAzimuth + PI;
+       }
+
+     while(aElevation < -PI) 
+       {
+	   aElevation = aElevation + TWO_PI;
+       }
+     if(aElevation < -QUARTER_PI) 
+       {
+	   aElevation = aElevation + (QUARTER_PI - aElevation) * 2;
+	   aAzimuth = aAzimuth + PI;
+       }
+   
+     while (aAzimuth < 0)
+       aAzimuth = aAzimuth + TWO_PI;
+     while (aAzimuth > TWO_PI)
+	   aAzimuth = aAzimuth - TWO_PI;
+
+	
+   	iLocationData.iAzimuth = aAzimuth;
+	iLocationData.iElevation = aElevation;
+	iLocationData.iRadius = aRadius;
+
+
+    TReal elevation = aElevation / 1000.0; // conversion from milliradians to radians because Sin and Cos functions eat radians
+    
+    TReal elevationSin;
+    TReal elevationCos;
+    User::LeaveIfError( Math::Sin( elevationSin, elevation ) );
+    User::LeaveIfError( Math::Cos( elevationCos, elevation ) );
+    
+    TReal azimuthSin;
+    TReal azimuthCos;
+    User::LeaveIfError( Math::Sin( azimuthSin, aAzimuth / 1000.0) );
+    User::LeaveIfError( Math::Cos( azimuthCos, aAzimuth / 1000.0) );
+
+
+	iLocationData.iXCoordinate = (TInt32)(0.5 + aRadius * elevationCos * azimuthSin);
+    iLocationData.iYCoordinate = (TInt32)(0.5 + aRadius * elevationSin);
+    iLocationData.iZCoordinate = (TInt32)(0.5 - aRadius * elevationCos * azimuthCos);		
+	
+	}
+
+// -----------------------------------------------------------------------------
+// CLocation::DoEffectData
+// -----------------------------------------------------------------------------
+//
+EXPORT_C const TDesC8& CLocation::DoEffectData()
+	{
+#ifdef _DEBUG
+    RDebug::Print(_L("CLocation::DoEffectData"));
+#endif
+	iDataPckgTo = iLocationData;
+	return iDataPckgTo;
+	}
+
+// -----------------------------------------------------------------------------
+// CLocation::SetEffectData
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CLocation::SetEffectData(
+	const TDesC8& aEffectDataBuffer )
+	{
+#ifdef _DEBUG
+    RDebug::Print(_L("CLocation::SetEffectData"));
+#endif
+	TEfLocationDataPckg dataPckg;
+	dataPckg.Copy(aEffectDataBuffer);
+	iLocationData = dataPckg();
+	iEnabled = iLocationData.iEnabled;
+	iEnforced = iLocationData.iEnforced;
+	iHaveUpdateRights = iLocationData.iHaveUpdateRights;
+
+	}
+
+// ========================== OTHER EXPORTED FUNCTIONS =========================
+
+// End of File