1 /*

     2 * Copyright (c) 2007-2008 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:

    15 *

    16 */

    17 

    18 

    19 #ifndef BUFFERSOURCE_H

    20 #define BUFFERSOURCE_H

    21 

    22 #include <e32base.h>

    23 #include <f32file.h>

    24 #include <a3f/mbuffersource.h>

    25 

    26 #include "moutputport.h"

    27 #include "mstreambuffercontrol.h"

    28 

    29 #include <a3f/a3f_trace_utils.h>

    30 

    31 

    32 /////

    33  // This is the implementation of CAudioSource API.

    34  //

    35  // @see CAudioComponent.

    36  ///

    37 NONSHARABLE_CLASS(CBufferSource) : 	public CActive,

    38 									public MMMFBufferSource,		// A3F interface

    39 									public MOutputPort			// Adaptation interface

    40 

    41 	{

    42 public:

    43 

    44 	IMPORT_C static CBufferSource* NewL();

    45 	/////

    46 	// Destructor.

    47 	//

    48 	// Deletes all objects and releases all resource owned by this instance.

    49 	///

    50 	virtual ~CBufferSource();

    51 

    52 	// from MMMFBufferSource

    53 	TInt SetDataSupplier(MMMFAudioDataSupplier& aSupplier);

    54 	TInt BufferFilled(CMMFBuffer* aBuffer);

    55 	TInt BuffersDiscarded();

    56 

    57 	// from class MOutputPort

    58 	TInt GetOutputPort(MOutputPort*& aOutputPort);

    59 	TInt FillBuffer(CMMFBuffer* aBuffer, MInputPort* aConsumer);

    60 	TInt BufferEmptied(CMMFBuffer* aBuffer);

    61 	TInt SetInput(MInputPort* aInput);

    62 	TInt RemoveInput(MInputPort* aInput);

    63 	TInt FlushBuffer(MFlushHandlerObserver* aFlushObserver);

    64 private:

    65 

    66 	void ConstructL();

    67 

    68 	CBufferSource();

    69 

    70 	void DoCancel();

    71 

    72 	void RunL();

    73 

    74 private:

    75 	MFlushHandlerObserver* iObserver;

    76 

    77 	MMMFAudioDataSupplier* iSupplier;

    78 

    79 	MInputPort* iInput;

    80 

    81 	CMMFBuffer* iBuffer;

    82 	};

    83 

    84 #endif // BUFFERSOURCE_H