--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/multimediacommscontroller/mmccsubcontroller/inc/mccrtpmediaclock.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,182 @@
+/*
+* Copyright (c) 2006-2007 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 C_MCCRTPMEDIACLOCK_H
+#define C_MCCRTPMEDIACLOCK_H
+
+#include <e32base.h>
+#include <e32cmn.h>
+
+
+const TUint K8Khz( 8000 );
+const TInt K20ms( 20 );
+
+/**
+ * Mcc media clock registration info class
+ * 
+ * @lib N/A
+ * @since Series 60 3.2
+ */
+NONSHARABLE_CLASS( TMccRegInfo )
+    {
+    public:
+    inline TMccRegInfo() :
+            iSamplingFreq( K8Khz ),
+            iHwFrametime( K20ms ),
+            iKey( 0 )
+            { };
+    
+    TUint32 iKey;
+    TUint iSamplingFreq;
+    TInt iHwFrametime;
+    };
+    
+/**
+ * Media clock provides common RTP timestamp space.
+ *  
+ * Clock that forms common timeline for all media formats using 
+ * same SSRC. Typical client for media clock is 
+ * one of supported payload formatters.
+ *
+ * @lib    mmccsubcontroller.lib
+ * @since  S60 v3.2
+ */
+NONSHARABLE_CLASS( CMccRtpMediaClock ) : public CBase
+    {
+public:
+
+    static CMccRtpMediaClock* NewL();
+
+    virtual ~CMccRtpMediaClock();
+
+    /**
+     * Method for client registration. Media clock's client must be registered
+     * in order to use media clock services. If client has changed its
+     * parameters after first registration, new registration is needed.
+     *
+     * @since   S60 3.2
+     * @param   aSamplingFreq   Used sampling frequency.
+     * @param   aHwFrametime    Used frame time.
+     * @return  key             Unique key for client to use media clock
+     */
+    virtual TUint32 RegisterMediaFormat( TUint aSamplingFreq,
+                                 TInt aHwFrametime );
+
+    /**
+     * Client can query next rtp time stamp. NOT for keep alive packets!
+     *
+     * @since   S60 3.2
+     * @param   aKey            key got from registration
+     * @param   aTimeStamp      time stamp is returned
+     * @return  KErrNone if ok, else KErrNotFound
+     */
+    virtual TInt GetTimeStamp( TUint32 aKey, TUint32& aTimeStamp ); 
+                      
+    /**
+     * Latest consumed rtp time stamp can be queried through this method.
+     * Designed for keep alive packets.
+     *
+     * @since   S60 3.2
+     * @param   aTimeStamp      latest consumed rtp time stamp is returned
+     * @return  void
+     */
+    virtual void GetLatestConsumedTS( TUint32& aTimeStamp );
+    
+    /**
+     * Unregisters a media format with given key. Does nothing if given
+     * key is not found from registry.
+     *
+     * @since S60 v3.2
+     * @param aKey              Registration key from RegisterMediaFormat.
+     * @return void
+     */
+    virtual void UnregisterMediaFormat( TUint32 aKey );
+    
+    /**
+     * Checks whether 'timebased' or 'callback' increment has been used
+     */
+    virtual TBool TimeBasedIncrement() const;
+    
+private:
+
+    CMccRtpMediaClock();
+
+    void ConstructL();
+    
+    /**
+     * Calculates new rtp time stamp.
+     *
+     * @since   S60 3.2
+     * @return  new rtp time stamp
+     */
+    TUint32 TimeStampIncrement(); 
+     
+    /**
+     * Check clients key to verify registration and to set variables
+     *
+     * @since   S60 3.2
+     * @param   aKey     client's unique key
+     * @param   aCell    
+     * @return  System wide error code
+     */
+    TInt CheckKey( TUint32 aKey, TInt& aCell );
+    
+
+private: // data
+
+    /**
+     * Used sampling frequency
+     */
+    TUint iSamplingFreq; 
+    
+    /**
+     * Used frame time
+     */
+    TInt iHwFrametime;
+    
+    /**
+     * current rtp time stamp
+     */
+    TUint32 iCurRtpTS;
+    
+    /**
+     * Currently used registeration key 
+     */ 
+    TUint32 iUsedKey;
+    
+    /**
+     * Array to maintain registration info
+     */
+    RArray<TMccRegInfo> iRegister;
+    
+    /**
+     * Previous time when time stamp was updated
+     */
+    TTime iPreviousTimestamp;
+    
+    /**
+     * Whether 'timebased' or 'callback' increment has been used
+     */
+    TBool iTimeBasedIncrement;
+    
+    };
+
+
+#endif // C_MCCRTPMEDIACLOCK_H
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