/*

* Copyright (c) 2006 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:    

*

*/

//  INCLUDES

#ifndef MCCVIDEOSOURCE_H

#define MCCVIDEOSOURCE_H

#include <e32std.h>

#include "mccdatasource.h"

#include "mccinternalcodecs.h"

class CMccVideoSourceImpl;

class CMccFileSourceImpl;

class TMccCodecInfo;

class MMccCameraHandler;

// CLASS DECLARATIONS

/**

* Helper class to contain user information

*/

class TMccVideoSourceUser

    {

    public:

        TMccVideoSourceUser( MAsyncEventHandler* aEventHandler ) : 

            iEventHandler( aEventHandler ), 

            iCodecInfo(), 

            iReserved1( 0 ), 

            iReserved2( 0 )

            {

            }

    public:

        MAsyncEventHandler* iEventHandler;

        TMccCodecInfo iCodecInfo;

        TUint32 iReserved1;

        TUint32 iReserved2;

    };

/**

* Video source is used to get video data from camera.

*

*/

class CMccVideoSource: public CMccDataSource

    {

    public: // Methods called internally or by the controller

        /**

        * Two-phased constructor.

        */

        static MDataSource* NewSourceL( TUid aImplementationUid, 

                                        const TDesC8& aInitData );

		void ConstructSourceL ( const TDesC8& aInitData );

		CMccVideoSource();

		virtual ~CMccVideoSource();

    public: // new

    	virtual void SetCameraHandler( MMccCameraHandler& aCameraHandler );

    	virtual TInt CameraIndex() const;

        virtual void SetVideoCodecL( const TMccCodecInfo& aVideoCodec );

        virtual void GetVideoCodecL( TMccCodecInfo& aVideoCodec  );

        virtual void GetSupportedVideoCodecsL( RArray<TFourCC>& aVideoTypes );

        virtual void SetAudioCodecL( const TMccCodecInfo& aAudioCodec );

        virtual void GetAudioCodecL( TMccCodecInfo& aAudioCodec );

        virtual void GetSupportedAudioCodecsL( RArray<TFourCC>& aAudioTypes );

        virtual void SetAudioEnabledL( TBool aEnabled );

        virtual TBool AudioEnabledL() const;

        virtual void SetGainL( TInt aGain );

        virtual TInt GainL() const;

        virtual TInt MaxGainL() const;  

    public: // From MMccSourceSink

        virtual TInt AddUser( MAsyncEventHandler* aUser );

        virtual void RemoveUser( MAsyncEventHandler* aUser );

        virtual void SetCurrentUser( MAsyncEventHandler* aUser );

        virtual void UpdateL( const TDesC8& aVal );

        virtual void GetParameterL( TUint32 aParam, TDes8& aVal );

        virtual void SetParameterL( TUint32 aParam, const TDesC8& aVal );

    public: // From MDataSource

        /**

        * From MDataSource. Returns the data type as a fourCC code of the data source.

        *

        * @since    Series 60 3.0

        * @param    "aMediaId"

        *           This identifies the type of media eg audio or video and the stream id.

        *           Only KUidMediaTypeAudio -mediatype is supported.

        * @return    The fourCC code identifying the source datatype for the specified aMediaId.

        */

        TFourCC SourceDataTypeCode( TMediaId aMediaId );

        /**

        * From MDataSource. Sets the data type as a fourCC code for the data source

        *

        * @since    Series 60 3.0

        * @param    "aSourceFourCC"

        *            This specifies the data type as a fourCC code to set the source to.

        *

        * @param    "aMediaId"

        *            This identifies the type of media eg audio or video and the stream id.

        *           Only KUidMediaTypeAudio -mediatype is supported.

        *

        * @return    KErrNone if successful, KErrNotSupported if the source does not support having

        *            it's data type set, otherwise a system wide error code.

        */

        TInt SetSourceDataTypeCode( TFourCC aCodec, 

                                    TMediaId aMedia );

        /**

        * From MDataSource. Not used. Leaves with KErrNotSupported.

        * 

        * @since    Series 60 3.0

        * @param    "aBuffer"

        *            The buffer that has been emptied by a data sink and is now available for reuse

        * @return   None

        */

        void BufferEmptiedL( CMMFBuffer* aBuffer );

        /**

        * From MDataSource. Method to indicate whether the data source can create a buffer.

        *

        * @since    Series 60 3.0

        * 

        * @return    EFalse

        */

        TBool CanCreateSourceBuffer();

        /**

        * From MDataSource. Not used. Leaves with KErrNotSupported.

        *

        * @since    Series 60 3.0

        * @param    "aMediaId"

        *           This identifies the type of media eg audio or video and the stream id.

        *           This parameter is required in cases where the source can supply data

        *           of more than one media type and/or multiple strams of data eg a multimedia file.

        *

        * @param    "aReference"

        *           This must be written to by the method to indicate whether the created buffer is

        *           a 'reference' buffer.  A 'reference' buffer is a buffer that is owned by the source

        *           and should be used in preference to the sink buffer provided the sink buffer

        *           is also not a reference buffer.

        * .  

        * @return   The created buffer

        */

        CMMFBuffer* CreateSourceBufferL( TMediaId, 

                                         TBool& aReference );

        /**

        * From MDataSource. Method to 'logon' the data source to the same thread that source will be supplying data in.

        *

        * Jitterbuffer for incoming packets and downlink timeout timer are created here.

        * 

        * @param    "aEventHandler"

        *           This is an MAsyncEventHandler to handle asynchronous events that occur during the

        *           transfer of multimedia data.  The event handler must be in the same thread as the data transfer

        *           thread - hence the reason it is passed in the SourceThreadLogon as opposed to say the constructor.

        *

        *

        * @return   KErrNone if successful, otherwise a system wide error code.

        */

        TInt SourceThreadLogon( MAsyncEventHandler& aEventHandler );

        /**

        * From MDataSource. Method to 'logoff' the data source from the same thread that source supplies data in.

        *

        * Jitterbuffer for incoming packets and downlink timeout timer are deleted. Datasource deletes the 

        * stream(s) and unregisters itself as an observer for the RTP session for incoming RTP and RTCP packets.

        *

        * @return None

        */

        void SourceThreadLogoff();

        /**

        * From MDataSource. Method to 'prime' the data source.

        *

        * Datasource is set to primed state.

        *

        * @since    Series 60 3.0

        * @return   None

        */

        void SourcePrimeL();

        /**

        * From MDataSource. Method to 'play' the data source.

        *

        * Downlink timeout timer is started and datasource is set to playing state.

        *

        * @since    Series 60 3.0

        * @return   None

        */

        void SourcePlayL();

        /**

        * From MDataSource. Method to 'pause' the data source.

        *

        * Downlink timeout timer is stopped and datasource is set to paused state.

        *

        * @since    Series 60 3.0

        * @return   None

        */

        void SourcePauseL();

        /**

        * From MDataSource. Method to 'stop' the data source.

        *

        * Downlink timeout timer is stopped and datasource is set to stopped state.

        *

        * @since    Series 60 3.0

        * @return   None

        */

        void SourceStopL();

        /**

        * From MDataSource. Method called by a MDataSink to request the data source to fill aBuffer with data.

        *

        * Datasource gets packet from jitterbuffer and forwards it to the payloadformatdecoder

        * for further processing. Datasource works synchronously; consumers BufferFilledL

        * is called when RTP packet is got succesfully from jitterbuffer.

        * 

        * @since    Series 60 3.0

        * @param    "aBuffer"

        *           The buffer that needs filling with data

        *

        * @param    "aConsumer" 

        *           The data sink that consumes the data. The data source needs this to make the BufferFilledL

        *           callback on aConsumer when the data source has completed filling the aBuffer.

        *

        * @param    "aMediaId"

        *           This identifies the type of media eg audio or video and the stream id.

        *           This parameter is required in cases where the source can supply data

        *           of more than one media type and/or multiple strams of data eg a multimedia file.

        * @return   None

        */

        void FillBufferL( CMMFBuffer* aBuffer,

                          MDataSink* aConsumer,

                          TMediaId aMediaId );

        /**

        * From MDataSource

        */

        void NegotiateSourceL( MDataSink& aDataSink );	

    public: // From MMccRateAdaptationObserver

        TInt RateAdaptationRequest( const TMccEvent& aInputData, 

                                    TMccEvent& aOutputData );

    private:

        void AddUserL( MAsyncEventHandler* aUser );

        TBool MultipleCodecs() const;

        void UpdateCurrentUserL();

    private:

    #if ( ( defined(MCC_VIDEO_SOURCE_FOR_EMU) || defined(_lint) ) && !defined(TEST_EUNIT) )

        CMccFileSourceImpl* iSourceImpl;

    #else

        CMccVideoSourceImpl* iSourceImpl;

    #endif

        TUint iCameraIndex;

        RPointerArray<TMccVideoSourceUser> iUsers;

        MAsyncEventHandler* iCurrentUser;

        TUint32 iReserved1;

        TUint32 iReserved2;

    private:

   	#ifdef TEST_EUNIT

		friend class UT_CMccVideoSource;	

   	#endif

	};

#endif 

// End of file