telephonyprotocols/rawipnif/src/Receiver.cpp
changeset 0 3553901f7fa8
child 7 fe8b59ab9fa0
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/telephonyprotocols/rawipnif/src/Receiver.cpp	Tue Feb 02 01:41:59 2010 +0200
@@ -0,0 +1,142 @@
+// Copyright (c) 2002-2009 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:
+// Implements the active object that controls the Read() requests.
+// 
+//
+
+/**
+ @file
+*/
+
+#include "Receiver.h"
+#include "Constants.h"
+#include <es_ini.h>
+
+CReceiver::CReceiver(CBcaIoController& aObserver, CBttLogger* aTheLogger, TInt aMaxPacketSise)
+/**
+ * Constructor. Performs standard active object initialisation.
+ *
+ * @param aObserver Reference to the observer of this state machine
+ * @param aTheLogger The logging object
+ */
+	: CActive(EPriorityHigh), 
+	  iObserver(aObserver), 
+	  iTheLogger(aTheLogger),
+	  iMaxPacketSise(aMaxPacketSise)
+	{	
+	CActiveScheduler::Add(this);
+	}
+
+CReceiver* CReceiver::NewL(CBcaIoController& aObserver, CBttLogger* aTheLogger, TInt aMaxPacketSise)
+/**
+ * Two-phase constructor. Creates a new CBcaIoController object, performs 
+ * second-phase construction, then returns it.
+ *
+ * @param aObserver The observer, to which events will be reported
+ * @param aTheLogger The logging object
+ * @return A newly constructed CBcaIoController object
+ */
+	{
+	CReceiver* self = new (ELeave) CReceiver(aObserver, aTheLogger, aMaxPacketSise);
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+void CReceiver::ConstructL()
+/**
+ * Second-phase constructor. Creates all the state objects it owns.
+ */
+	{
+	_LOG_L1C1(_L8("CReceiver::ConstructL"));
+	iData.CreateL(iMaxPacketSise);
+	}
+
+CReceiver::~CReceiver()
+/**
+ * Destructor.
+ */
+	{
+	iData.Close();
+	Cancel();
+	}
+
+void CReceiver::RunL()
+/**
+ *  Method called when read request completes. This will only be once the BCA has a full IP 
+ *  packet in its buffer.
+ */
+	{
+	_LOG_L1C2(_L8("CReceiver::RunL [iStatus=%d]"), iStatus.Int());
+
+	if (iStatus!=KErrNone)
+		{
+		if(iStatus == KErrNoMemory)
+			{
+			_LOG_L2C1(
+				_L8("WARNING! CReceiver: Read failed with KErrNoMemory"));
+			// Read operation failed!! Nif will re-issue the read request.
+			StartListening();
+			}
+		else 
+			{
+			_LOG_L2C1(_L8("WARNING! CReceiver: Read failed"));
+			iObserver.Stop(iStatus.Int());
+			}
+		return;
+		}
+
+	_LOG_L1C1(_L8("CReceiver: Data Packet Received"));
+
+    iRMBufPacket.CreateL(iData);
+    iRMBufPacket.Pack();
+
+    // Immediately execute new read request.
+    StartListening();
+
+#ifdef RAWIP_HEADER_APPENDED_TO_PACKETS
+    TUint16 protocolCode = iObserver.RemoveHeader(iRMBufPacket);
+#else
+    TUint16 protocolCode = 0;
+#endif // RAWIP_HEADER_APPENDED_TO_PACKETS
+
+    // Process the packet
+    iObserver.GetObserver().Process(iRMBufPacket, protocolCode);
+    iRMBufPacket.Free();
+	}
+
+void CReceiver::DoCancel()
+/**
+ *	Cancel active request
+ */
+	{
+	_LOG_L1C1(_L8("CReceiver::DoCancel"));
+
+	(iObserver.Bca())->CancelRead(); 
+	}
+
+void CReceiver::StartListening()
+/**
+ *  This method issues a Read request. This is the API used to receive 
+ *  packets from BCA.  
+ */
+	{
+	_LOG_L1C1(_L8("CReceiver::StartListening"));
+
+	// The BCA will complete this read once it has a full IP packet in its buffer.
+	(iObserver.Bca())->Read(iStatus, iData);
+
+	SetActive();
+	}