1 /*

     2 * Copyright (c) 2004-2009 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:

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef LOGICALAUDIOCODEC_H

    21 #define LOGICALAUDIOCODEC_H

    22 

    23 #include <e32base.h>

    24 #include <a3f/a3f_trace_utils.h>

    25 #include <a3f/a3fbase.h>

    26 #include <a3f/maudiocodec.h>

    27 

    28 #include "componentparameters.h"

    29 #include "audioprocessingunit.h"

    30 #include "mconfigurationhelper.h"

    31 

    32 // Remove when the MMRC server is ready

    33 #include "maudiocodecadaptationobserver.h"

    34 

    35 class MLogicalSettingObserver;

    36 class MAudioProcessingUnitObserver;

    37 class MConfigurationHelper;

    38 

    39 /**

    40 	This is the reference implementation of MAudioCodec API.

    41 	@lib logicalaudiocodec.lib

    42  */

    43 

    44 NONSHARABLE_CLASS(CLogicalAudioCodec) : public CAudioProcessingUnit,

    45 										public MAudioCodec,

    46 										public MAudioCodecAdaptationObserver

    47 	{

    48 friend class CAudioContext;

    49 friend class CLogicalAudioStream;

    50 public:

    51 	/**

    52 	Create a new instance.

    53 	*/

    54 	static CLogicalAudioCodec* NewL(TAny* aParam);

    55 

    56 	/**

    57 	Destructor.

    58 	Deletes all objects and releases all resource owned by this instance.

    59 	*/

    60 	virtual ~CLogicalAudioCodec();

    61 

    62 	// from base class MAudioCodec

    63 	TInt SetFormat(TUid aFormat);

    64 	TInt SetSampleRate(TInt aSampleRate);

    65 	TInt SetMode(TUid aMode);

    66 	TInt GetSupportedSamplesRates(RArray<TInt>& aSupportedRates);

    67 	TInt GetSupportedModes(RArray<TUid>& aSupportedModes);

    68 	TInt RegisterAudioCodecObserver(MAudioCodecObserver& aObserver);

    69 	void UnregisterAudioCodecObserver(MAudioCodecObserver& aObserver);

    70 

    71 	// Override just this

    72 	TBool IsTypeOf(TUid aTypeId) const;

    73 	TAny* Interface(TUid aType);

    74 

    75 	// from MAudioCodecAdaptationObserver

    76 	void AllBuffersProcessed();

    77 	void ProcessingUnitError(TInt aError);

    78 	void GetSupportedAModesComplete(TInt aError);

    79 	void GetSupportedARatesComplete(TInt aError);

    80 

    81 private:

    82 

    83 	/**

    84 	Second phase constructor

    85 	*/

    86 	void ConstructL();

    87 

    88 	/**

    89 	Constructor

    90 	*/

    91 	CLogicalAudioCodec(TAny* aParam);

    92 

    93 protected: // data

    94 

    95 	// Format uid

    96 

    97 	TUid	iFormat;

    98 

    99 	TInt				iSampleRateConfig;

   100 	TUid				iModeConfig;

   101 	RPointerArray<MAudioCodecObserver> iAudioCodecObserver;

   102 

   103 	MConfigurationHelper*		iAdaptationStream;

   104 

   105 	};

   106 

   107 #endif // LOGICALAUDIOCODEC_H