/*

* Copyright (c) 2005 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:    

*

*/

#ifndef CMCEVIDEOSDPCODEC_H

#define CMCEVIDEOSDPCODEC_H

#include "mcemediasdpcodec.h"

class CMceComVideoCodec;

class CMceComVideoStream;

#define MCE_SDP_STRING_VIDEOL()\

        SdpCodecStringPool::StringPoolL().StringF( \

        SdpCodecStringConstants::EMediaVideo,\

        SdpCodecStringPool::StringTableL() )

/**

 * 

 *

 * @lib 

 */

class CMceVideoSdpCodec : public CMceMediaSdpCodec

    {

    public://constructor and destructor

        /**

        * Constructor

        */

        static CMceVideoSdpCodec* NewL();

        /**

        * Destructor

        */

        ~CMceVideoSdpCodec();

    public: //from CMceSdpCodec

        /**

        * Returns ETrue, if media is encoded by this codec

        * @return ETrue, if media is encoded by this codec

        */

        TBool Encodes( const CMceComMediaStream& aStream ) const;

    public: //from CMceMediaSdpCodec

        /**

        * Returns codecs

        * @param aStream media stream

        * @param return codecs

        * @leave if stream type does not macth codecs

        */

        const RPointerArray<CMceComCodec>& CodecsL( CMceComMediaStream& aStream ) const;

        /**

        * Encodes rtpmap -attribute

        * @param aCodec codec encoded to rtpmap

        * @leave system wide error

        */

        CSdpFmtAttributeField* EncodeRtpmapAttributeLC( CMceComCodec& aCodec ) const;

        /**

        * Encodes media related attributes

        * @param aCodec the codec

        * @param aMediaLine media line

        * @param aRtpmap rtpmap attribute

        * @leave system wide error

        */

        void EncodeMediaAttributesL( CMceComCodec& aCodec, 

                                     CSdpMediaField& aMediaLine, 

                                     CSdpFmtAttributeField& aRtpmap ) const;

        /**

        * Decodes media related attributes

        * @param aMediaLine media line

        * @param aCodec the codec

        * @leave system wide error

        */

		void DecodeMediaAttributesL( CSdpMediaField& aMediaLine,

                                     CMceComCodec& aCodec,

                                     CSdpFmtAttributeField& aRtpmap ) const;		                                     

        /**

        * Creates media stream based on sdp type

        * @param aType the sdp type sendrecv, sendonly or receive only

        * @return media stream

        * @leave system wide error

        */

        CMceComMediaStream* CreateStreamLC( TInt aType ) const;

        /**

        * Updates media based on received offer

        * @param aStream media stream

        * @param aDirection the direction 

        * @leave system wide error

        */

        void UpdateStreamL( CMceComMediaStream& aStream, TInt aDirection ) const;

        /**

        * Creates codec based on rtpmap line

        * @param aRtpmap rtpmap line

        * @return codec or NULL, if not supported

        * @leave system wide error

        */

        CMceComCodec* CreateCodecLC( CSdpFmtAttributeField& aRtpmap ) const;

        /**

        * Creates codec based on payload type

        * @param aPayload payload

        * @param aMediaLine media line

        * @return codec or NULL, if not supported

        * @leave system wide error

        */

        CMceComCodec* CreateCodecLC( TUint aPayload, CSdpMediaField& aMediaLine ) const;

        /**

        * Decodes session level media attributes

        * @param aStream media stream

        * @param aSdpDocument sdp document

        * @return codec or NULL, if not supported

        * @leave system wide error

        */

        void DecodeSessionMediaAttributesL( CMceComMediaStream& aStream, 

                                            CSdpDocument& aSdpDocument ) const;

    private:

        /**

        * C++ Constructor

        * @param aMedia media

        */

        CMceVideoSdpCodec( RStringF aMedia );

        /**

        * 2nd phase constructor

        */

        void ConstructL();

        /**

        * Encodes framerate attribute

        * @param aCodec the codec

        * @param aMediaLine media line

        * @param aRtpmap rtpmap attribute

        * @leave system wide error

        */

        void EncodeFrameRateAttributeL( CMceComVideoCodec& aCodec,

                                        CSdpMediaField& aMedia,

                                        CSdpFmtAttributeField& aFmtpline ) const;

        /**

        * Encodes framesize attribute

        * @param aCodec the codec

        * @param aMediaLine media line

        * @param aRtpmap rtpmap attribute

        * @leave system wide error

        */

        void EncodeFrameSizeAttributeL( CMceComVideoCodec& aCodec,

                                        CSdpMediaField& aMedia,

                                        CSdpFmtAttributeField& aFmtpline ) const;

        /**

        * Creates uplink video stream with camera and rtp sink

        * @return uplink video stream

        */

        CMceComVideoStream* CreateUplinkStreamL() const;

        /**

        * Creates downlink video stream with rtp source and display

        * @return downlink video stream

        */

        CMceComVideoStream* CreateDownlinkStreamL() const;

    private:

        RStringF iFrameSizeAttr;

    };

#endif //CMCEVIDEOSDPCODEC_H