--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hti/HtiFramework/inc/HtiCommAdapter.h	Tue Feb 02 01:57:15 2010 +0200
@@ -0,0 +1,204 @@
+/*
+* Copyright (c) 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:  Definition of CCommAdapter that uses media plugins to read
+*        HTI messages and send new ones back. Because comm plug-in
+*        interface define async functions, this class is AO.
+*
+*/
+
+
+#ifndef MCOMMADAPTER_H__
+#define MCOMMADAPTER_H__
+
+#include <e32base.h>
+
+//forward declaration
+class CHtiDispatcher;
+class CHTICommPluginInterface;
+class CHtiMessage;
+
+class CHtiCommAdapter: public CActive
+    {
+private:
+    /**
+    * Enum of different states depending on the current operation
+    */
+    enum TCommState
+        {
+        EIdle,
+        EReceiving,
+        EReceivingCont,
+        ESending
+        };
+
+public:
+    /**
+    * Construct the object and adds it to CActiveScheduler.
+    *
+    * @param aCommPlugin communication plug-in
+    * @param aDispatcher message dispatcher
+    * @param aMaxMsgSize max size of an incoming message that will be
+    *           accepted
+    */
+    static CHtiCommAdapter* NewL(CHTICommPluginInterface* aCommPlugin,
+        CHtiDispatcher* aDispatcher,
+        TInt aMaxMsgSize);
+
+    /**
+    * Construct the object and adds it to CActiveScheduler
+    *
+    * @param aCommPlugin communication plug-in
+    * @param aDispatcher message dispatcher
+    * @param aMaxMsgSize max size of an incoming message that will be
+    *           accepted
+    */
+    static CHtiCommAdapter* NewLC(CHTICommPluginInterface* aCommPlugin,
+        CHtiDispatcher* aDispatcher,
+        TInt aMaxMsgSize);
+
+    /**
+    * Destructor
+    */
+    ~CHtiCommAdapter();
+
+    /**
+    * Issue an async request to receive whole HTI message and
+    * pass it to the framework on complition.
+    */
+    void ReceiveMessage();
+
+    /**
+    * Send a HTI message via comm plug-in.
+    * Ownership of aMessage is tranfered to CCommAdapter.
+    * When message is sent, aMessage will be deleted.
+    *
+    * @param aMessage a HTI message to send
+    */
+    void SendMessage(CHtiMessage* aMessage);
+
+    /**
+    * Stop all ongoing operations and clean all internal buffers.
+    */
+    void Reset();
+
+protected:
+
+    CHtiCommAdapter(CHtiDispatcher* aDispatcher,
+                 CHTICommPluginInterface* aCommPlugin,
+                TInt aMaxMsgSize);
+
+    void ConstructL();
+
+
+    /**
+    * Issue request to receive the next packet.
+    * If aContinue = ETrue than iState is set to EReceivingCont
+    * Otherwise it set to EReceiving.
+    * iState set to EReceivingCont after message beginning was received
+    * and its continuation is expected
+    *
+    * @param aContinue continuation flag
+    */
+    void ReceiveMessage(TBool aContinue);
+
+    /**
+    * Handle received data from buffer and reissue request
+    */
+    void HandleReceiveL();
+    void HandleReceiveContL();
+
+    /**
+    * Reissue request to send message
+    */
+    void HandleSend();
+
+
+protected: //from CActive
+    void RunL();
+    void DoCancel();
+    TInt RunError(TInt aError);
+
+private: //data members
+
+    /**
+    * Current communication state
+    */
+    TCommState iState;
+
+    /**
+    * Pointer to message dispatcher.
+    */
+    CHtiDispatcher* iDispatcher;
+
+    /**
+    * Communication ECom plug-in
+    */
+    CHTICommPluginInterface* iCommPlugin;
+
+    /**
+    * Buffer for receiving data. It'is allocated once and used for
+    * all subsequent receiving operation. Data from this buffer copied
+    * to iMsgToReceive buffer that than passed to the framework for
+    * processing
+    */
+    HBufC8* iBuffer;
+
+    /**
+    * Pointer to the buffer for receiveing data
+    */
+    TPtr8 iBufferPtr;
+
+    /**
+    * HTI incoming message. It's passed to the framework
+    * when whole message is received
+    */
+    CHtiMessage* iMsgToReceive;
+
+    /**
+    * Small buffer used when there is some data left in iBuffer that
+    * cannot be processed (less than min header size)
+    */
+    HBufC8* iLeftovers;
+
+    /**
+    * Keep message passed in SendMessage() between calls to comm. plugin
+    * and deleted when sending is complete
+    */
+    CHtiMessage* iMsgToSend;
+
+    /**
+    * Pointer to the part of iMsgToSend started from iMsgToSendOffset
+    * that is being sent via current comm. plug-in
+    */
+    TPtrC8 iMsgToSendPtr; //ptr to msg part passed to plug-ins
+
+    /**
+    * Offset in iMsgToSend of a part that is being sent
+    */
+    TInt iMsgToSendOffset;
+
+    /**
+    * Amount of receving bytes to skip.
+    * It's ussed when there is no memory for incoming message or
+    * its size too big.
+    */
+    TInt iSkipLength;
+
+    /**
+    * Max message size to accept
+    */
+    const TInt iMaxMessageSize;
+    };
+
+#endif