/*

 * Copyright (c) 2006 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:  Class definition for the frame table functions.

  *

 */

 #ifndef CFRAMETABLE_H

 #define CFRAMETABLE_H

 //  INCLUDES

 #include <e32base.h>

 // FORWARD DECLARATIONS

 class MFrameTableEventObserver;

 // CLASS DEFINITIONS

 /**

  *  This class provides AAC utility functions.

  *

  *  @lib AACAudioControllerUtility.lib

  *  @since 3.0

  */

 class CFrameTable : public CBase

     {

 public:

     // Constructors and destructor

     enum TFrameTableEvent

         {

         EPosReached,

         EDecodeInterval,

         EPlayWindowEndPosReached

         };

     /**

      * Two-phased constructor.

      */

     IMPORT_C static CFrameTable* NewL();

     /**

      * Destructor.

      */

     IMPORT_C virtual ~CFrameTable();

 public:

     // New functions

     IMPORT_C TInt InitFrameTable(TInt aSampleRate, TInt aSamplesPerFrame);

     IMPORT_C TInt SubmitTableEntry(TUint aPos);

     IMPORT_C TInt FindFramePosFromTime(TUint& aTimeMs, TUint& aPos);

     IMPORT_C TInt FindFrameTimeFromPos(TUint& aTimeMs, TUint& aPos);

     IMPORT_C TInt LastFramePos(TUint& aPos);

     IMPORT_C TInt LastFrameTime(TUint& aTimeMs);

     IMPORT_C void ShrinkTable();

     IMPORT_C void ResetTable();

     IMPORT_C TInt SetSourceReference(TUint aTimeMs, TUint aPos);

     IMPORT_C TInt RegisterForEvent(TFrameTableEvent aEvent,

             MFrameTableEventObserver* aObserver, TUint aParam);

     IMPORT_C TInt UnRegisterForEvent(TFrameTableEvent aEvent,

             MFrameTableEventObserver* aObserver);

     IMPORT_C TInt Bitrate();

     IMPORT_C TInt IsSeeking(TBool& aIsSeeking);

     IMPORT_C TInt GetLastPosEvent(TUint& aPos);

 private:

     class TBufRefPosEntry

         {

 public:

         TUint iPos;

         TUint iFrameNum;

         };

     /**

      * C++ default constructor.

      */

     CFrameTable();

     /**

      * By default Symbian 2nd phase constructor is private.

      */

     void ConstructL();

     TUint CalcFrameFromTimeMs(TUint aTimeMs);

     TInt SubmitLowResTableEntry(TBufRefPosEntry& aEntry);

 private:

     // Data

     RArray<TBufRefPosEntry> iFrameTable;

     RArray<TBufRefPosEntry> iLowResFrameTable;

     TUint iSampleRate;

     TUint iSamplesPerFrame;

     TUint iMsecPerFrame;

     TUint iLastBytePos;

     TUint iAvgBitrate;

     TUint iOffset;

     TUint iTimeRefMs;

     TUint iBufCnt;

     TUint iPosEventMs;

     TUint iPlayWindowEndPosEventMs;

     TInt iIntervalRef;

     TUint iIntervalEvent;

     MFrameTableEventObserver* iObserver;

     TUint iEventPos;

     TUint iCurrentFrameCount;

     TUint iFramesPerLowResInterval;

     TUint iLowResIntervalMs;

     TUint iFrameNum;

     TBool iOkToShrink;

     };

 class MFrameTableEventObserver

     {

 public:

     virtual TInt

             HandleFrameTableEvent(CFrameTable::TFrameTableEvent aEvent) = 0;

     };

 #endif 		// CFRAMETABLE_H

 // End of File