/*

* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Audio input class to handle uncompressed audio input from DevSound

*                and compress it using CMMFCodecs

*

*/

#ifndef CCMRAUDIOINPUTSW_H

#define CCMRAUDIOINPUTSW_H

// INCLUDES

#include "CCMRAudioInput.h"

#include <mmf/server/mmfcodec.h>

// FORWARD DECLARATIONS

class CCMRFifo;

// CLASS DECLARATIONS

/**

*  Audio input class to be used with CMMFCodec audio codecs

*/

class CCMRSWAudioInput : public CCMRAudioInput

    {

    public:  // Constructor and destructor

        /**

        * Two-phased constructor.

        * @param MDataSource *aMMFAudioInput

        * @param TMediaId aMediaId 

        * @return CCMRAudioInput* Pointer to constructed audioinput

        */

        static CCMRAudioInput* NewL(MDataSource *aMMFAudioInput, CCMRActiveOutput* aOutput, TUint aThreadId, MAsyncEventHandler& aEventHandler, CCMRConfigManager* aConfig);

        /**

        * Destructor.

        */

        virtual ~CCMRSWAudioInput();

    public: // from base classes

        /**

        * From CCMRAudioInput, informs that the given buffer is filled, called by MMFAudioInput

        */

        void BufferFilledL(CMMFBuffer* aBuffer);

        /**

        * From CCMRAudioInput, requests to fill the buffer

        */

        void FillBufferL(CMMFBuffer* aBuffer);

        /**

        * From CCMRAudioInput, stops recording

        */

        void SourceStopL();

        /**

        * From CCMRAudioInput, starts recording

        */

        void SourceRecordL();

        /**

        * From CCMRAudioInput, primes source

        */

        void SourcePrimeL();

        /**

        * From CCMRAudioInput, set codecdata-object

        */

        void SetCodecL( CCMRAudioCodecData* aCodecData );

        /**

        * From CCMRAudioInput, configures the codec

        */

        void ConfigureCodecL();

    protected: // new functions

        /**

        *  Encode the given PCM buffer, using EncodeL. This generates 0 or 1 output buffer and may need to be called 

        *  again to completely consume the input

        *  @return TBool ETrue if completed with the input, EFalse if must be called again

        */

        virtual TBool EncodeBufferL(CMMFDataBuffer* aInBuffer);

        /**

        *  Encode the given buffer from PCM to selected format, using CMMFCodec

        *  @return TCodecProcessResult::TCodecProcessResultStatus

        */

        virtual TCodecProcessResult::TCodecProcessResultStatus EncodeL(CMMFDataBuffer* aInBuffer, CMMFDataBuffer* aOutBuffer);

    protected: // from base classes

        /**

        * From CActive/CTimer, encodes buffer to wait for retrieval from output active object

        */

        void RunL();

        /**

        * From CActive, handles errors in RunL

        */

        TInt RunError(TInt aError);

        /**

        * From CActive, cancels the AO

        */

        void DoCancel();

    private:

        /**

        * C++ default constructor

        * @param MDataSource* aDataSource

        * @param TMediaId aMediaId

        */

        CCMRSWAudioInput(MDataSource* aDataSource, MAsyncEventHandler& aEventHandler) : 

            CCMRAudioInput(aDataSource, aEventHandler) {};

        /**

        * Symbian 2nd phase constructor

        */

        void ConstructL(CCMRActiveOutput* aOutput, TUint aThreadId, CCMRConfigManager* aConfig);

        /**

        * Handles allocation of input buffers after audioinput has completed initialization.

        */                

        void AllocateInputBuffersL();

    private: // data

        // Whether or not AllocateInputBuffersL needs to clear buffers (happens if audiocodec is reset).

        TBool iDeleteOld;

        // if the last input buffer didn't fill the last splitted buffer completely, we need to copy more data next time 

        // to stay in sync with timer. This tells how much data

        TUint iRemainder;

        // Time when we got our first buffer from MMF audio input => sending of next ones is based on this

        TTime iStartTime;

        // Duration of output buffer in time => timeout. By default it is KCMRMaxAudioBufferTime*1000

        TUint iBufferDuration;

        // Encoder used to encode from PCM to given format

        CMMFCodec* iCodec;

        // Max length of coded buffer, specific to each codec

        TInt iCodedBufferLength;

        // Minimum size for PCM buffer

        TUint iMinPCMBufferSize;

    };

#endif      

// End of File