--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphics_plat/guestvideodriver_api/ldd/inc/virtualvideohwchannel.h	Fri Aug 13 15:11:40 2010 +0100
@@ -0,0 +1,152 @@
+// Copyright (c) 2002-2010 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:
+//
+
+
+#ifndef VIRTUALVIDEOHWCHANNEL_H
+#define VIRTUALVIDEOHWCHANNEL_H
+
+#include <kernel/kernel.h>
+#include <kernel/kern_priv.h>
+#include "sgextension.h"//For SgExtension
+
+#include "virtualvideohwinterface.h"
+
+class MVirtualVideoHwDeviceInterface;
+class DDeviceReqHandler;
+
+_LIT( KVirtualVideoHwChannelPanic, "DVVideoHwChannel" );
+
+/**
+ * Logical channel for the ARM virtual video peripheral used in the
+ * platform simulator.
+ */
+class DVirtualVideoHwChannel : public DLogicalChannel
+    {
+public:
+
+    /**
+     * Constructor.
+     * 
+     * @param aDeviceInterface
+     *   Interface to the device driver.
+     * @param aHwInterface
+     *   Interface to the hardware.
+     * @param aDeviceReqHandler
+     *   Shared request handler for channels
+     * @param aQueue
+     *   Deferred function call queue.
+     */
+    DVirtualVideoHwChannel(
+            MVirtualVideoHwDeviceInterface& aDeviceInterface,
+            DVirtualVideoHwInterface& aHwInterface,
+            DDeviceReqHandler& aDeviceReqHandler,
+            TDfcQue* aQueue
+            );
+
+    /**
+     * Destructor.
+     */
+    virtual ~DVirtualVideoHwChannel();
+
+protected: // From DLogicalChannelBase
+
+    /**
+     * Second phase constructor for DLogicalChannelBase objects.
+     * @see DLogicalChannelBase::DoCreate
+     */
+    virtual TInt DoCreate( TInt aUnit, const TDesC8* aInfo, const TVersion& aVer );
+
+protected: // From DLogicalChannel
+
+    /**
+     * Handles a client request in the client context.
+     * @see DLogicalChannelBase::Request
+     */
+    virtual TInt Request( TInt aReqNo, TAny *a1, TAny *a2 );
+
+    /**
+     * Processes a message for this logical channel.
+     * @see DLogicalChannel::HandleMsg
+     */
+    void HandleMsg( TMessageBase* aMsgRequest );
+
+protected: // New functions
+    
+    /**
+     * This function is called from HandleMsg(). It is used to handle
+     * asynchronous requests.
+     * 
+     * @param aUserThread
+     *   User thread
+     * @param aReqNo
+     *   Request number
+     * @param aStatus
+     *   Request status
+     * @param a1
+     *   Optional parameter
+     * @param a2
+     *   Optional parameter
+     * @return
+     *   KErrNone - Successful
+     *   KErrArgument - a1 is NULL
+     *   KErrNotSupported - Invalid aReqNo
+     *   System wide errorcodes in other error situations.
+     */
+    virtual TInt DoRequest(
+            DThread*& aUserThread,
+            TInt aReqNo,
+            TRequestStatus* aStatus,
+            TAny* a1 = NULL,
+            TAny* a2 = NULL );
+    
+    /**
+     * This function is called from HandleMsg(). It is used to handle
+     * synchronous requests.
+     * 
+     * @param aUserThread
+     *   User thread
+     * @param aFunction
+     *   Function number
+     * @param a1
+     *   Required parameter
+     * @param a2
+     *   Optional parameter
+     * @return
+     *   KErrNone - Successful
+     *   KErrArgument - a1 is NULL
+     *   KErrNotReady - Buffer not allocated yet for playback or recording.
+     *   KErrInUse - Playback or recording already ongoing.
+     *   KErrNotSupported - Invalid aFunction
+     *   System wide errorcodes in other error situations.
+     */
+    virtual TInt DoControl( DThread*& aUserThread, TInt aFunction, TAny* a1, TAny* a2 = NULL );
+
+private:
+
+    /// Interface to the logical device
+    MVirtualVideoHwDeviceInterface& iDeviceInterface;
+    
+    /// Interface to the hardware
+    DVirtualVideoHwInterface& iHwInterface;
+
+    TInt GetSgImageMetaData(TSgImageMetaData& aSgInfo, const TUint64 aId);
+
+    TInt iValue;
+    
+    /// Request handler (Owned)
+    DDeviceReqHandler& iReqHandler;
+    };
+
+#endif // VIRTUALVIDEOHWCHANNEL_H