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 AMRFRAME_H

    22 #define AMRFRAME_H

    23 

    24 #include <e32base.h>

    25 

    26 // DATA TYPES

    27 

    28 /**

    29 *  AMR frame type ( narrow band ).

    30 *  Digits from enumeration names refer to bit-rate in kbps.

    31 */

    32 enum TAmrFrameType

    33     {

    34     EAmrFrame4_75 = 0,

    35     EAmrFrame5_15 = 1,

    36     EAmrFrame5_9 = 2,

    37     EAmrFrame6_7 = 3,

    38     EAmrFrame7_4 = 4,

    39     EAmrFrame7_95 = 5,

    40     EAmrFrame10_2 = 6,

    41     EAmrFrame12_2 = 7,

    42     EAmrFrameSid = 8,       // Silence indicator ( SID ) frame

    43                             // contains only comfort noise ( CN ) parameters

    44     EAmrFrameNoData = 15    // No data

    45     };

    46 /**

    47 *  AMR frame type ( wide band ).

    48 *  Digits from enumeration names refer to bit-rate in kbps.

    49 */

    50 enum TAmrWbFrameType

    51     {

    52     EAmrWbFrame6_60 = 0,

    53     EAmrWbFrame8_85 = 1,

    54     EAmrWbFrame12_65 = 2,

    55     EAmrWbFrame14_25 = 3,

    56     EAmrWbFrame15_85 = 4,

    57     EAmrWbFrame18_25 = 5,

    58     EAmrWbFrame19_85 = 6,

    59     EAmrWbFrame23_05 = 7,

    60     EAmrWbFrame23_85 = 8,

    61     EAmrWbFrameSid = 9,       // Silence indicator ( SID ) frame

    62                             // contains only comfort noise ( CN ) parameters

    63     EAmrWbFrameNoData = 15    // No data

    64     };

    65     

    66 

    67 // CLASS DECLARATION

    68 

    69 /**

    70 * The AMR payload decoder for bandwidth efficient mode.

    71 *

    72 * @lib      Mccamrplformat.dll

    73 * @since    Series 60 3.1

    74 */

    75 class TAmrFrame

    76     {

    77     

    78 public:  // Constructors and destructor

    79 

    80     /**

    81     * Constructor.

    82     */

    83     TAmrFrame( );

    84 

    85 public:     // Data

    86 

    87     // Frame type ( FT, 4 bits )

    88     TAmrFrameType iFrameType;

    89 

    90     // Frame quality indicator ( Q, 1 bit ); 1 if frame OK; 0 if frame damaged

    91     TUint8 iFrameQualityInd;

    92         

    93     // CRC ( Cyclic Redundancy Code, 8 bits ) for the frame

    94     TUint8 iCrc;

    95         

    96     // Audio channel ( starts from zero ) which this frame belongs to

    97     TInt iChannel;

    98         

    99     // Pointer to frame data; data length depends on frame type

   100     TUint8* iFrameData;

   101         

   102     // Starting bit index of frame data pointed to by `iFrameData'

   103     TUint iBitIndex;

   104     

   105     };

   106 

   107 

   108 

   109 

   110 #include "amrframe.inl"

   111 

   112 #endif        //    AMRFRAME_H