--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SigComp/SigCompEngine/inc/UdvmMemory.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,226 @@
+/*
+* Copyright (c) 2003-2009 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:
+* Name        : UdvmMemory.h
+* Part of     : SigComp / UDVM
+* Interface   : 
+* UDVM memory/memory manipulation
+* Version     : 1.0
+*
+*/
+
+
+
+
+/**
+ @internalComponent
+*/
+
+
+#ifndef UDVMMEMORY_H
+#define UDVMMEMORY_H
+
+/**
+*  Universal decompression virtual machine memory
+*
+*  @lib sigcomp
+*/
+
+class CUdvmMemory : public CBase
+    {
+    public:  // Constructors and destructor
+
+        /**
+         * @param aMemSize UDVM memory size in bytes
+         */
+
+        static CUdvmMemory* NewL(TUint aMemSize);
+
+        static CUdvmMemory* NewLC(TUint aMemSize);
+
+        /**
+         * Destructor.
+         */
+
+        virtual ~CUdvmMemory();
+
+
+    public: // New functions
+
+        /**
+         * Write byte to UDVM memory.
+         * Leave if out of memory bounds.
+         *
+         * @pre 0<=aDest<65536
+         *
+         * @param aDest destination address in UDVM memory
+         * @param aVal value, 8-bit significant
+         *
+         */
+
+        void WriteMem8L(TUint aDest, TUint aVal);
+
+
+        /**
+         * Write 16-bit word to UDVM memory.
+         * Leave if out of memory bounds.
+         *
+         * @pre 0<=aDest<65536
+         *
+         * @param aDest destination address in UDVM memory
+         * @param aVal value, 16-bit significant
+         *
+         */
+
+        void WriteMem16L(TUint aDest, TUint aVal);
+
+
+        /**
+         * Read byte from UDVM memory.
+         * Leave if out of memory bounds.
+         *
+         * @pre 0<=aSrc<65536
+         *
+         * @param aSrc source address in UDVM memory
+         *
+         * @returns 8-bit value
+         */
+
+        TUint8 ReadMem8L(TUint aSrc) const;
+
+
+        /**
+         * Read 16-bit word from UDVM memory.
+         * Leave if out of memory bounds.
+         *
+         * @pre 0<=aSrc<65536
+         *
+         * @param aSrc source address in UDVM memory
+         *
+         * @returns 16-bit value
+         */
+
+        TUint16 ReadMem16L(TUint aSrc) const;
+
+
+        /**
+         * Set block of UDVM memory to value.
+         * Leave if out of memory bounds.
+         *
+         * @pre 0<=aDest<65536
+         *
+         * @param aDest destination address in UDVM memory
+         * @param aVal value
+         * @param aSize size of block
+         *
+         */
+
+        void SetMemL(TUint aDest, TUint8 aVal, TUint aSize);
+
+
+        /**
+         * Copy block of data to UDVM memory.
+         * Leave if out of memory bounds.
+         *
+         * @pre 0<=aDest<65536
+         *
+         * @param aDest destination address in UDVM memory
+         * @param aSrc source address
+         * @param aSize size of block
+         *
+         */
+
+        void CopyToMemL(TUint aDest, const TUint8* aSrc, TUint aSize);
+
+
+        /**
+         * Copy block of data from UDVM memory.
+         * Leave if out of memory bounds.
+         *
+         * @pre 0<=aSrc<65536
+         *
+         * @param aDest destination address
+         * @param aSrc source address in UDVM memory
+         * @param aSize size of block
+         *
+         */
+
+        void CopyFromMemL(TUint8* aDest, TUint aSrc, TUint aSize) const;
+
+        /**
+         * Initialize UDVM memory.
+         * Leave if UDVM memory too small for message.
+         *
+         * @param aMsgSize size of message
+         *
+         */
+        void InitMemoryL(TUint aMsgSize, TUint aCyclesPerBit);
+
+        /**
+         * Get pointer to UDVM memory.
+         *
+         * @returns UDVM memory
+         */
+        TUint8* MemoryPtr();
+
+        /**
+         * Get size of UDVM memory
+         *
+         * @returns UDVM memory size
+         */
+        TUint MemorySize() const;
+
+        /**
+         * Get size of free UDVM memory
+         *
+         * @returns UDVM free memory size
+         */
+        TUint FreeMemorySize() const;
+
+
+        /**
+         * Check if access to UDVM memory is allowed.
+         *
+         * @param aAddr address of block in UDVM memory
+         * @param aSize size of block that will be accessed.
+         */
+        void CheckMemAccessL(TUint aAddr, TUint aSize) const;
+
+    protected:
+
+        /**
+        * @param aMemSize UDVM memory size
+        * @param aMsgSize sizeof incoming message
+        */
+
+        void ConstructL(TUint aMemSize);
+
+
+    private:
+        CUdvmMemory();
+
+    private:    // Data
+        /** size of UDVM memory (up to 65536 bytes) */
+        TUint iMemSize;
+
+        /** size of decompression memory */
+        TUint iFreeMemSize;
+
+        /** total decompression memory (UDVM and buffered message) */
+        CArrayFixFlat<TUint8>* iMem;
+    };
+
+#endif
+            
+// End of File