1 /*

     2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:    

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 #ifndef MCCQOSCONTROLLER_H

    22 #define MCCQOSCONTROLLER_H

    23 

    24 //  INCLUDES

    25 #include <e32base.h>

    26 #include "mccrateadaptationdef.h"

    27 #include "mccinternalevents.h"

    28 #include "mmccevents.h"

    29 

    30 // CONSTANTS

    31 

    32 // MACROS

    33 

    34 // DATA TYPES

    35 

    36 // FUNCTION PROTOTYPES

    37 

    38 // FORWARD DECLARATIONS

    39 class MMccRateAdaptationObserver;

    40 class MMccResources;

    41 class TMccEvent;

    42 class CDeltaTimer;

    43 class MDataSink;

    44 class MDataSource;

    45 

    46 // CLASS DECLARATION

    47 

    48 class TMccQosControllerIcmpError

    49     {

    50     public:

    51     

    52         TMccQosControllerIcmpError() :

    53             iLinkId( 0 ),

    54             iErrorTimeWindowBeginning( 0 ),

    55             iErrorCount( 0 )

    56             {

    57             }

    58             

    59     public:

    60     

    61         TUint32 iLinkId;

    62         TTime iErrorTimeWindowBeginning;

    63         TInt iErrorCount;

    64     };

    65 

    66 /**

    67 *

    68 */

    69 class CMccQosController : public CBase

    70     {

    71     public:  // Constructors and destructor

    72         

    73         /**

    74         * Two-phased constructor.

    75         */

    76         IMPORT_C static CMccQosController* NewL( MMccRateAdaptationObserver& aObserver, 

    77                                         MMccResources& aResources );

    78         

    79         /**

    80         * Destructor.

    81         */

    82         IMPORT_C ~CMccQosController();

    83 

    84     public: // New functions

    85     

    86         /**

    87         * Processes event if it is qos related.

    88         * @param aEvent

    89         * @return ETrue if event should be ignored, otherwise EFalse

    90         */

    91         IMPORT_C TBool EventReceived( const TMccEvent& aEvent );       

    92 

    93     public: // Functions from base classes       

    94         

    95     protected:  // New functions

    96 

    97     protected:  // Functions from base classes

    98 

    99     private:

   100 

   101         /**

   102         * C++ default constructor.

   103         */

   104         CMccQosController( MMccRateAdaptationObserver& aObserver,

   105                            MMccResources& aResources );

   106 

   107         /**

   108         * By default Symbian 2nd phase constructor is private.

   109         */

   110         void ConstructL();

   111         void DoAdaptationCalculations();

   112         void FillRateAdaptationEvent();

   113         void ClearRateEventData();

   114         

   115         /**

   116 		*Starts timer of type CDeltaTimer, 

   117 		*which callback is AsyncTimerExpired function

   118 		*/

   119 		void StartTimerForAsync();

   120 		

   121 		/**

   122 		* A callback for CDeltaTimer

   123 		*/

   124 		static TInt AsyncTimerExpired(TAny* aPtr);

   125         

   126         void GetSinkSources();

   127         

   128         void CheckRateChangeResult(TInt aValue);

   129         

   130         TBool HandleIcmpError( const TMccEvent& aEvent );

   131         

   132         static TBool IcmpErrorMatch( const TMccQosControllerIcmpError& aError1, 

   133                                      const TMccQosControllerIcmpError& aError2 );

   134         

   135         static TBool IcmpErrorCleanup( const TMccQosControllerIcmpError& aError1, 

   136                                        const TMccQosControllerIcmpError& aError2 );

   137         

   138         void DoAdaptation();

   139         

   140         TInt GetShortTermComparisonDelay();

   141         

   142         TInt CalculateDelayOfShortTermPeriod();

   143 

   144     public:     // Data

   145     

   146     protected:  // Data

   147 

   148     private:    // Data

   149     

   150         MMccRateAdaptationObserver& iMainObserver;

   151         MMccResources& 				iResources;

   152         TInt 						iRoundTripTime;

   153         TRtpPeerStat 				iStreamStat;

   154         TMccRateAdaptationEventData iRateEventData;

   155         TMccEvent					iEvent;

   156         TMccEvent					iResultEvent;

   157         TThresholdValues 			iThresholdValues; //rate control threshold values

   158         CDeltaTimer* 				iDeltaTimer;

   159         TCallBack 					iDeltaTimerCallBack;

   160 		TDeltaTimerEntry 			iDeltaTimerEntry;

   161 		

   162        TBool						iBitRateChanged;

   163        TUint						iEventCounter;

   164        TBool                        iAdapted;

   165        TInt                         iRoundTripDelayOfPreviousShortPeriod;

   166        TInt                         iRoundTripDelays[ KMccShortTermCalculation ];

   167         RArray<TMccQosControllerIcmpError> iIcmpErrors;

   168        

   169     public:     // Friend classes

   170 

   171     protected:  // Friend classes

   172 

   173     private:    // Friend classes

   174 

   175     #ifdef TEST_EUNIT

   176     friend class UT_CMccQosController;

   177     #endif

   178 

   179     };

   180 

   181 #endif      // MCCQOSCONTROLLER_H   

   182             

   183 // End of File