bluetooth/btstack/avctp/common/avctppacketstatics.h
changeset 0 29b1cd4cb562
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bluetooth/btstack/avctp/common/avctppacketstatics.h	Fri Jan 15 08:13:17 2010 +0200
@@ -0,0 +1,92 @@
+// Copyright (c) 2005-2009 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:
+//
+
+/**
+ @file
+ @internalComponent
+*/
+
+#ifndef AVCTPPACKETSTATICS_H
+#define AVCTPPACKETSTATICS_H
+
+#include <bluetoothav.h>
+#include <bluetooth/avctptypes.h>
+
+namespace SymbianAvctp
+{
+
+const static TUint8 KUndefinedTransactionLabel = SymbianAvctp::KMaxTransactionLabel;
+		
+const static TUint8 KIsValidPidMask		= 0x01;
+const static TUint8 KMessageTypeMask	= 0x02;
+const static TUint8 KPacketTypeMask		= 0x0C;
+const static TUint8 KTransactionMask	= 0xF0;
+	
+const static TUint KNormalHeaderPidOffset = 1;
+const static TUint KStartHeaderPidOffset  = 2;	
+const static TUint KNumFragmentsOffset = 1;
+
+const static TUint KTransactionLabelShift  = 4;	
+const static TUint KPacketTypeShift  = 2;	
+
+const static TUint KResponseMsgBit  = 2;	
+
+/**
+Types of packet, as indicated in the packet header.
+Note these are the actual values used in the AVCTP v1.0
+spec.
+*/ 
+enum TPacketType
+	{
+	/** An unfragmented AVCTP packet */
+	ENormalPkt		= 0x0,
+	/** An AVCTP fragment start packet */
+	EStartFrag		= 0x1,
+	/** An AVCTP fragment continue packet */
+	EContinueFrag	= 0x2,
+	/** An AVCTP fragment end packet */
+	EEndFrag		= 0x3,
+	/** This value should never be used in practise. It's only for initialisation */
+	EUnknownPkt		= 0x4,
+	};
+
+/**
+Offset of the data within an AVCTP packet
+*/
+enum TPduHeaderLength
+	{
+	/** For an unfragmented AVCTP packet */
+	ENormalHeaderLength		= 0x3,
+	/** For an AVCTP fragment start packet */
+	EStartFragHeaderLength	= 0x4,
+	/** For an AVCTP fragment continue or end packet */
+	EOtherFragHeaderLength	= 0x1,
+	/** The minimum length of the three headers */
+	EMinimumHeaderLength = 0x1,
+	};			
+
+// Avctp packet parsing functions 
+IMPORT_C TMessageType MessageType(const TDesC8& aData);
+IMPORT_C TPacketType PacketType(const TDesC8& aData);
+IMPORT_C TTransactionLabel TransactionLabel(const TDesC8& aData);
+IMPORT_C TBool IsValidPid(const TDesC8& aData);
+IMPORT_C TPid Pid(const TDesC8& aData);
+IMPORT_C TUint8 FragmentsInSdu(const TDesC8& aData);
+IMPORT_C TPduHeaderLength ConvertPacketTypeToHeaderLength(TPacketType aPktType);
+	
+} // end of namespace SymbianAvctp
+
+#endif // AVCTPPACKETSTATICS_H 
+