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os/mm/mmhais/a3facl/src/shared/audiostreammanager.h
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution. 
     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 AUDIOSTREAMMANAGER_H

    21 #define AUDIOSTREAMMANAGER_H

    22 

    23 #include <e32base.h>

    24 #include <ecom/ecom.h>

    25 #include <a3f/a3f_trace_utils.h>

    26 #include <a3f/a3fbase.h>

    27 #include <a3f/maudiostream.h>

    28 

    29 /**

    30 	A generic AudioComponent base class implementation.

    31 	@see MAudioProcessingUnit

    32 */

    33 NONSHARABLE_CLASS(CAudioStreamManager) :	public CBase,

    34 											public MAudioStream

    35 	{

    36 public:

    37 	static CAudioStreamManager* NewL(TUid aImplementationUid);

    38 	/**

    39 		Destructor.

    40 		Releases all resources and deletes all objects owned by this instance.

    41 	*/

    42 	virtual ~CAudioStreamManager();

    43 

    44 	//From MAudioStream

    45 	virtual TInt RegisterAudioStreamObserver(MAudioStreamObserver& aObserver);

    46 	virtual void UnregisterAudioStreamObserver(MAudioStreamObserver& aObserver);

    47 	virtual TInt SetAudioType(const TAudioTypeSettings& aAudioTypeSettings);

    48 	virtual void GetAudioType(TAudioTypeSettings& aAudioTypeSettings) const;

    49 	virtual TAudioStreamId InstanceId() const;

    50 	CAudioStreamManager();

    51 

    52 protected: // data

    53 	TAudioStreamId iAudioStreamId;

    54 	TAudioTypeSettings  iAudioTypeSettings;

    55 	RPointerArray<MAudioStreamObserver> iAudioStreamObserver;

    56 

    57 private:

    58 	TUid iDtor_ID_Key;

    59 

    60 	};

    61 

    62 

    63 // Interface's (abstract base class's) destructor

    64 inline CAudioStreamManager::~CAudioStreamManager()

    65 	{

    66 	iAudioStreamObserver.Close();

    67 	REComSession::DestroyedImplementation(iDtor_ID_Key);

    68 	}

    69 

    70 // Interface's (abstract base class's) static factory method implementation.

    71 // Asks ECOM plugin framework to instantiate appropriate concret plugin

    72 // implementation.

    73 inline CAudioStreamManager* CAudioStreamManager::NewL(TUid aImplementationUid)

    74 	{

    75 	TAny* ptr = REComSession::CreateImplementationL( aImplementationUid , _FOFF(CAudioStreamManager, iDtor_ID_Key));

    76 	return static_cast<CAudioStreamManager*>(ptr);

    77 	}

    78 

    79 inline CAudioStreamManager::CAudioStreamManager()

    80 	{

    81 	//iAudioStreamId

    82 	}

    83 

    84 // ---------------------------------------------------------------------------

    85 // CAudioStreamManager::RegisterAudioStreamObserver

    86 // ---------------------------------------------------------------------------

    87 inline TInt CAudioStreamManager::RegisterAudioStreamObserver(MAudioStreamObserver& aObserver)

    88 	{

    89 	TInt err = iAudioStreamObserver.Find(&aObserver);

    90 	if(err == KErrNotFound)

    91 		{

    92 		err = iAudioStreamObserver.Append(&aObserver);

    93 		}

    94 	else

    95 		{

    96 		err = KErrAlreadyExists;

    97 		}

    98 	return err;

    99 	}

   100 

   101 // ---------------------------------------------------------------------------

   102 // CAudioStreamManager::UnregisterAudioStreamObserver

   103 // ---------------------------------------------------------------------------

   104 inline void CAudioStreamManager::UnregisterAudioStreamObserver(MAudioStreamObserver& aObserver)

   105 	{

   106 	TInt idxOrErr = iAudioStreamObserver.Find(&aObserver);

   107 	if( idxOrErr != KErrNotFound )

   108 		{

   109 		iAudioStreamObserver.Remove(idxOrErr);

   110 		}

   111 	}

   112 

   113 // ---------------------------------------------------------------------------

   114 // CAudioStreamManager::InstanceId

   115 // ---------------------------------------------------------------------------

   116 inline TAudioStreamId CAudioStreamManager::InstanceId() const

   117 	{

   118 	return iAudioStreamId;

   119 	}

   120 

   121 // ---------------------------------------------------------------------------

   122 // CAudioStreamManager::SetAudioType

   123 // ---------------------------------------------------------------------------

   124 inline TInt CAudioStreamManager::SetAudioType(const TAudioTypeSettings& aAudioTypeSettings)

   125 	{

   126 	TInt err(KErrNone);

   127 	iAudioTypeSettings = aAudioTypeSettings;

   128 	return err;

   129 	}

   130 

   131 // ---------------------------------------------------------------------------

   132 // CAudioStreamManager::GetAudioType

   133 // ---------------------------------------------------------------------------

   134 inline void CAudioStreamManager::GetAudioType(TAudioTypeSettings& aAudioTypeSettings) const

   135 	{

   136 	aAudioTypeSettings = iAudioTypeSettings;

   137 	}

   138 #endif // CAUDIOSTREAMFACTORY_H
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