--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugin/poi/landmarks/overlay/src/Accelerometer.cpp	Fri Jun 25 12:50:05 2010 +0200
@@ -0,0 +1,126 @@
+/*
+ * Name        : Accelerometer.cpp
+ * Description : Accelerometer helper class
+ * Project     : This file is part of OpenMAR, an Open Mobile Augmented Reality browser
+ * Website     : http://OpenMAR.org
+ *
+ * Copyright (c) 2010 David Caabeiro
+ *
+ * All rights reserved. This program and the accompanying materials are made available 
+ * under the terms of the Eclipse Public License v1.0 which accompanies this 
+ * distribution, and is available at http://www.eclipse.org/legal/epl-v10.html
+ *
+ */
+
+#include "Accelerometer.h"
+
+#include <SensrvAccelerometerSensor.h>
+
+#include <SensrvChannel.h>
+#include <SensrvChannelFinder.h>
+#include <SensrvChannelInfo.h>
+
+CAccelerometer* CAccelerometer::NewL()
+{
+    CAccelerometer* self = new(ELeave) CAccelerometer;
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(self);
+
+    return self;
+}
+
+CAccelerometer::~CAccelerometer()
+{
+    iSensorChannel->CloseChannel();
+}
+
+CAccelerometer::CAccelerometer()
+{}
+
+void CAccelerometer::ConstructL()
+{
+    CSensrvChannelFinder* sensorChannelFinder = CSensrvChannelFinder::NewLC();
+
+    RSensrvChannelInfoList channelInfoList;
+    CleanupClosePushL(channelInfoList);
+
+    TSensrvChannelInfo mySearchConditions;
+    mySearchConditions.iChannelType = KSensrvChannelTypeIdAccelerometerXYZAxisData;
+
+    sensorChannelFinder->FindChannelsL(channelInfoList, mySearchConditions);
+
+    TSensrvChannelInfo channelInfo;
+
+    if (channelInfoList.Count() > 0)
+        channelInfo = channelInfoList[0];
+    else
+        User::Leave(KErrNotFound);
+
+    CleanupStack::PopAndDestroy(&channelInfoList);
+    CleanupStack::PopAndDestroy(sensorChannelFinder);
+
+    iSensorChannel = CSensrvChannel::NewL(channelInfo);
+    iSensorChannel->OpenChannelL();
+}
+
+void CAccelerometer::StartL()
+{
+    iSensorChannel->StartDataListeningL(this, 1, 8, 0);
+}
+
+void CAccelerometer::Stop()
+{
+    iSensorChannel->StopDataListening();
+}
+
+void CAccelerometer::DataReceived(CSensrvChannel& aChannel, TInt aCount, TInt aDataLost)
+{
+    if (aChannel.GetChannelInfo().iChannelType ==  KSensrvChannelTypeIdAccelerometerXYZAxisData)
+    {
+        TPckgBuf<TSensrvAccelerometerAxisData> dataBuffer;
+        TSensrvAccelerometerAxisData data;
+
+        for (TInt i = 0; i < aCount; ++i)
+        {
+            aChannel.GetData(dataBuffer);
+
+            data = dataBuffer();
+            // Do something with the date in data variable
+            // data.iTimeStamp
+
+            // Compensate axis for landscape mode
+            TInt x = -data.iAxisY;
+            TInt y =  data.iAxisX;
+            TInt z =  data.iAxisZ;
+#if 0
+            TInt x = data.iAxisX;
+            TInt y = data.iAxisY;
+            TInt z = data.iAxisZ;
+#endif
+            const TReal K128 = 0.0078125;   // 1/128
+            const TReal KPole1 = 0.97;      // Pole of lowpass filter applied to X and Y
+            const TReal KPole2 = 0.90;      // Pole of lowpass filter applied to Z
+            const TReal KPole3 = 0.75;      // Pole of highpass filter applied to Z
+
+            // Single-pole lowpass-filtering of X and Y
+            iX1 = KPole1 * iX1 + ( 1.0 - KPole1 ) * ( K128 * x );
+            iY1 = KPole1 * iY1 + ( 1.0 - KPole1 ) * ( K128 * y );
+
+            // Single-pole lowpass-filtering of Z
+            iZ0 = KPole2 * iZ1 + ( 1.0 - KPole2 ) * ( K128 * z );
+            // 1st order highpass-filtering of Z (zero at 1)
+            iZ2 = KPole3 * iZ2 + ( 1.0 - KPole3 ) * ( iZ0 - iZ1 );
+
+            // Update variables for use at next sample
+            iZ1 = iZ0;
+        }
+    }
+}
+
+void CAccelerometer::DataError(CSensrvChannel& aChannel, TSensrvErrorSeverity aError)
+{
+}
+
+void CAccelerometer::GetDataListenerInterfaceL(TUid aInterfaceUid, TAny*& aInterface)
+{}