1 /*

     2  * Copyright (c) 2009 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: Telephony Multimedia Service

    15  *

    16  */

    17 

    18 

    19 #ifndef CFRAMETABLE_H

    20 #define CFRAMETABLE_H

    21 

    22 //  INCLUDES

    23 #include <e32base.h>

    24 

    25 // FORWARD DECLARATIONS

    26 class MFrameTableEventObserver;

    27 

    28 // CLASS DEFINITIONS

    29 

    30 /**

    31  *  This class provides AAC utility functions.

    32  *

    33  *  @lib AACAudioControllerUtility.lib

    34  *  @since 3.0

    35  */

    36 class CFrameTable : public CBase

    37     {

    38 public:

    39     // Constructors and destructor

    40 

    41     enum TFrameTableEvent

    42         {

    43         EPosReached,

    44         EDecodeInterval,

    45         EPlayWindowEndPosReached

    46         };

    47 

    48     /**

    49      * Two-phased constructor.

    50      */

    51     IMPORT_C static CFrameTable* NewL();

    52 

    53     /**

    54      * Destructor.

    55      */

    56     IMPORT_C virtual ~CFrameTable();

    57 

    58 public:

    59     // New functions

    60 

    61     IMPORT_C TInt InitFrameTable(TInt aSampleRate, TInt aSamplesPerFrame);

    62     IMPORT_C TInt SubmitTableEntry(TUint aPos);

    63 

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

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

    66     IMPORT_C TInt LastFramePos(TUint& aPos);

    67     IMPORT_C TInt LastFrameTime(TUint& aTimeMs);

    68 

    69     IMPORT_C void ShrinkTable();

    70     IMPORT_C void ResetTable();

    71 

    72     IMPORT_C TInt SetSourceReference(TUint aTimeMs, TUint aPos);

    73 

    74     IMPORT_C TInt RegisterForEvent(TFrameTableEvent aEvent,

    75             MFrameTableEventObserver* aObserver, TUint aParam);

    76     IMPORT_C TInt UnRegisterForEvent(TFrameTableEvent aEvent,

    77             MFrameTableEventObserver* aObserver);

    78     IMPORT_C TInt Bitrate();

    79     IMPORT_C TInt IsSeeking(TBool& aIsSeeking);

    80     IMPORT_C TInt GetLastPosEvent(TUint& aPos);

    81 

    82 private:

    83 

    84     class TBufRefPosEntry

    85         {

    86 public:

    87         TUint iPos;

    88         TUint iFrameNum;

    89         };

    90 

    91     /**

    92      * C++ default constructor.

    93      */

    94     CFrameTable();

    95 

    96     /**

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

    98      */

    99     void ConstructL();

   100 

   101     TUint CalcFrameFromTimeMs(TUint aTimeMs);

   102     TInt SubmitLowResTableEntry(TBufRefPosEntry& aEntry);

   103 

   104 private:

   105     // Data

   106 

   107     RArray<TBufRefPosEntry> iFrameTable;

   108     RArray<TBufRefPosEntry> iLowResFrameTable;

   109     TUint iSampleRate;

   110     TUint iSamplesPerFrame;

   111     TUint iMsecPerFrame;

   112     TUint iLastBytePos;

   113     TUint iAvgBitrate;

   114     TUint iOffset;

   115     TUint iTimeRefMs;

   116     TUint iBufCnt;

   117     TUint iPosEventMs;

   118     TUint iPlayWindowEndPosEventMs;

   119     TInt iIntervalRef;

   120     TUint iIntervalEvent;

   121     MFrameTableEventObserver* iObserver;

   122     TUint iEventPos;

   123     TUint iCurrentFrameCount;

   124     TUint iFramesPerLowResInterval;

   125     TUint iLowResIntervalMs;

   126     TUint iFrameNum;

   127     TBool iOkToShrink;

   128     };

   129 

   130 class MFrameTableEventObserver

   131     {

   132 public:

   133     virtual TInt

   134             HandleFrameTableEvent(CFrameTable::TFrameTableEvent aEvent) = 0;

   135     };

   136 

   137 #endif 		// CFRAMETABLE_H

   138 // End of File