1 /*

     2 * Copyright (c) 2008 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:  Maintains the set of supported codecs 

    15 *

    16 */

    17 

    18 

    19 #ifndef C_IRCODECMANAGER_H

    20 #define C_IRCODECMANAGER_H

    21 

    22 #include <sounddevice.h>

    23 

    24 /**

    25  *  Maintains the list of supported codecs in a terminal.

    26  * 

    27  *

    28  */

    29 NONSHARABLE_CLASS( CIRCodecManager ): public CBase, public MDevSoundObserver

    30     {

    31 public:

    32     /**

    33      * Two-phased constructor.

    34      * @return Instance of CIRCodecManager

    35      */

    36     static CIRCodecManager* NewL();

    37 

    38     /**

    39      * Two-phased constructor.

    40      * @return Instance of CIRCodecManager

    41      */

    42     static CIRCodecManager* NewLC();

    43     

    44     /**

    45      * Destructor.

    46      */

    47     ~CIRCodecManager();

    48 

    49     /**

    50      * Tells if the codec provided as argument is supported by the terminal 

    51      * and by Internet Radio.

    52      * 

    53      * @param aCodec The codec that's support is tested.

    54      * @return ETrue if the codec is supported, EFalse if not.

    55      */

    56     TBool IsSupportedCodec( TFourCC aCodec ) const;

    57     

    58 private:

    59     /**

    60      * C++ Default constructor.

    61      */

    62     CIRCodecManager();

    63 

    64     /**

    65      * Second phase constructor

    66      */

    67     void ConstructL();

    68 

    69 private: // From MDevSoundObserver

    70     /**

    71      * @see MDevSoundObserver::InitializeComplete

    72      */

    73     void InitializeComplete(TInt aError);

    74     

    75     /**

    76      * @see MDevSoundObserver::ToneFinished

    77      */

    78     void ToneFinished(TInt aError);

    79     

    80     /**

    81      * @see MDevSoundObserver::BufferToBeFilled

    82      */

    83     void BufferToBeFilled(CMMFBuffer* aBuffer);

    84 

    85     /**

    86      * @see MDevSoundObserver::PlayError

    87      */

    88     void PlayError(TInt aError);

    89 

    90     /**

    91      * @see MDevSoundObserver::BufferToBeEmptied

    92      */

    93     void BufferToBeEmptied(CMMFBuffer* aBuffer);

    94 

    95     /**

    96      * @see MDevSoundObserver::RecordError

    97      */

    98     void RecordError(TInt aError);

    99 

   100     /**

   101      * @see MDevSoundObserver::ConvertError

   102      */

   103     void ConvertError(TInt aError);

   104 

   105     /**

   106      * @see MDevSoundObserver::DeviceMessage

   107      */

   108     void DeviceMessage(TUid aMessageType, const TDesC8& aMsg);

   109 

   110 private:

   111     /**

   112      * Initialises the set of supported codecs.

   113      */

   114     void LoadSupportedCodecsL();

   115 

   116     /**

   117      * Checks that the codec is in the set of Internet Radio's supported codecs

   118      * and verifies that DevSound can be initialised with the codec.

   119      * 

   120      * @param aCodec The codec to be tested.

   121      * @return ETrue if the codec is really supported, EFalse otherwise.

   122      */

   123     TBool VerifySupportL( TFourCC aCodec );

   124 

   125 private: 

   126     /**

   127      * The set of codecs that are supported.

   128      * Owned.

   129      */

   130     RArray<TFourCC> iSupportedDataTypes;

   131     

   132     };

   133 #endif // C_IRCODECMANAGER_H