/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:    RTP/TCP streamer for RTSP source.*

*/

#ifndef CCRRTPTCPSTREAMER_H

#define CCRRTPTCPSTREAMER_H

// INCLUDE FILES

#include <e32base.h>

// CONSTANTS

const TInt KCRRtpTcpStreamCount( 2 ); /** Max of two streams, audio and video */

// MACROS

// None

// DATA TYPES

// None

// FORWARD DECLARATIONS

class MCRRtpTcpObserver;

class CCRRtpTcpStream;

// CLASS DECLARATION

/**

*  RTP/TCP streamer for RTSP packet source.

*

*  @lib CommonRecordingEngine.lib

*  @since Series 60 3.0

*/

class CCRRtpTcpStreamer : public CBase

    {

public: // Constructors and destructors   

    /**

    * Two-phased constructor

    * @param aObserver a observer to TCP streamer.

    */

    static CCRRtpTcpStreamer* NewL( MCRRtpTcpObserver& aObserver );

    /**

    *  Destructor

    */

    virtual ~CCRRtpTcpStreamer();

public: // New methods

    /**

    * Signals that input IP packet is available for parsing.

    * @since Series 60 3.0

    * @param aIpData raw RTSP/RTP/TCP data received (IP packet).

    * @param aInterleaved a TCP interleaving state.

    * @return none.

    */

    void DataAvailable( const TDesC8& aIpData,

                        const TBool& aInterleaved );

private: // Constructors and destructors

    /**

    *  C++ default constructor

    */

    CCRRtpTcpStreamer( MCRRtpTcpObserver& aObserver );

    /**

    *  Second phase constructor

    */

    void ConstructL();

private: // New methods

    /**

    * Handles IP packet when more data is expected.

    * @since Series 60 3.0

    * @param aIpData a data of IP packet.

    * @return true if not enougth data in IP packet.

    */

    TBool HandleMoreExpected( TPtrC8& aData );

    /**

    * Handles TCP interleave packet.

    * @since Series 60 3.0

    * @param aData a data of IP packet.

    * @return true if not enougth data in IP packet.

    */

    TBool HandleTcpPacket( TPtrC8& aData );

    /**

    * Handles RTSP control response.

    * @since Series 60 3.0

    * @param aData a data of IP packet.

    * @param aInterleaved a TCP interleaving state.

    * @return true if not enougth data in IP packet.

    */

    TBool HandleRtspResponse( TPtrC8& aData,

                              const TBool& aInterleaved );

    /**

    * Creates an packet from IP data buffer.

    * @since Series 60 3.0

    * @param aData a data of IP packet.

    * @param aLength a length of RTSP/RTP packet.

    * @return none.

    */

    void MakePacket( TPtrC8& aData, const TInt aLength );

    /**

    * Handles incoming RTP or RTCP packet, forwards to user and to RTCP engine.

    * @since Series 60 3.0

    * @param aPacket a data of RTP packet.

    * @return none.

    */

    void ForwardPacket( const TDesC8& aPacket );

private: // Data

    /**

    * Observer for streaming session.

    */

    MCRRtpTcpObserver& iObserver;

    /**

    * More expected bytes count.

    */

    TInt iMoreExpected;

    /**

    * Data received so far.

    */

    HBufC8* iIpData;

    /**

    * RTSP data received so far.

    */

    HBufC8* iRtspData;

    /**

    * Media streams

    */

    CCRRtpTcpStream* iStreams[KCRRtpTcpStreamCount];

    };

#endif // CCRTCPSTREAMER_H

//  End of File