/*

* 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 CMCEMESSAGESDPCODEC_H

#define CMCEMESSAGESDPCODEC_H

#include "mcemediasdpcodec.h"

#include "mcecommediastream.h"

#include "mcecommsrpsource.h"

#include "mcecommsrpsink.h"

#include <sdpmediafield.h>

class CMceComMessageStream;

//class CMceComAudioCodec;

#define MCE_SDP_STRING_MESSAGEL()\

        SdpCodecStringPool::StringPoolL().OpenFStringL(KMceMediaMessage)

struct TParsedHeader

    {

    TBuf8<256> iNameValue;

    TBuf8<50> iTypeValue;

    TPtrC8 iHash;

    TInt64  iSize;

    TBuf8<32> iFileTransferId;

    };

/**

 * 

 *

 * @lib 

 */

class CMceMessageSdpCodec: public CMceMediaSdpCodec

    {

    public://constructor and destructor

        /**

        * Constructor

        */

        static CMceMessageSdpCodec* NewL();

        /**

        * Destructor

        */

        ~CMceMessageSdpCodec();

    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;

        /**

        * Encodes message media related attributes

        * @param aStream for media stream

        * @param aMediaLine media line        

        * @leave system wide error

        */

        void EncodeMessageMediaAttributesL( CMceComMessageStream& aStream, 

                CSdpMediaField& aMediaLine);

        /**

        * 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

        */

        CMceMessageSdpCodec( RStringF aMedia );

        /**

        * Creates uplink audio stream with mic and rtp sink

        * @return uplink audio stream

        */

        CMceComMessageStream* CreateUplinkStreamL() const;

        /**

        * Creates downlink audio stream with rtp source and speaker

        * @return downlink audio stream

        */

        CMceComMessageStream* CreateDownlinkStreamL() const;

        /**

         * Creates fmtlist that can be used as media field fmt list -attribute

         * @param aCodecs codecs

         * @return fmtp list

         */

        HBufC8* CreateFormatListL( CMceComCodec::TIterator& aCodecs ) const;

        /**

         * Decodes media line's format list to payload type array

         * @param aMediaLine Media line

         * @param aPayloadTypes payload types as an array

         */

        void DecodeFormatListL( CSdpMediaField& aMedia, 

                        RArray<TUint>& aPayloadTypes ) const;

        /**

        * Decodes media line's format list to payload type array

        * @param aMediaLine Media line

        * @param aPayloadTypes payload types as an array

        * @return  system wide error

        */

        TInt DecodeFormatList( CSdpMediaField& aMedia, 

                               RArray<TUint>& aPayloadTypes ) const;

        /**

         * Decodes static payloads if payload wasn't defined as rtpmap

         * @param aMediaLine Media line

         * @param aStream stream

         * @param aPayloadTypes payload types as an array

         * @param aRole role of negotiation

         * @return number of lines decoded

         */

        TInt DecodeStaticPayloadsL( CSdpMediaField& aMediaLine,

                CMceComMediaStream& aStream,

                RArray<TUint>& aPayloadTypes,

                TMceNegotiationRole aRole ) const;

        /**

         * If the path attribute is set for the message streams then this funtion

         * extracts the host and port informaiotn and sets accordinlgy to the 

         * media stream

         */

        void SetHostAddrFromPathAttrL(const TUriC8& aMsrpUri, 

                CSdpMediaField& aMediaLine);

        /**

         * Set MSRP path SDP attribute  to the media line

         */

        void SetPathAttributeL(CMceComMessageStream& aMsgStream, 

                CMceComMsrpSource* msrpSource, 

                CMceComMsrpSink* msrpSink,

                CSdpMediaField& aMediaLine);

        /**

         * Set MSRP SDP AcceptTypes attribte to the media line 

         */

        void SetAcceptTypesAttributeL(CMceComMsrpSource* msrpSource, CMceComMsrpSink* msrpSink, 

                     CSdpMediaField& aMediaLine);

        /**

         * Set MSRP SDP AcceptWrappedTypes attribte to the media line

         */

        void SetAcceptWrappedAttributeL(CMceComMsrpSource* msrpSource, CMceComMsrpSink* msrpSink,

                     CSdpMediaField& aMediaLine);

        /*

         * Set file share attribure

         */

        void SetFileShareAttributeL(CMceComMsrpSource* msrpSource, CMceComMsrpSink* msrpSink,

                     CSdpMediaField& aMediaLine);

        /*

         * Parsing remotesdplines

         */

        TInt ParseSomeHeader(const TDesC8& aHeaderToParse, TParsedHeader& aParsedHeader) const;

        /**

         * Creates File-Selector attributes and appends it to media line

         * 

         */

        void EncodeFileAttributeL( CMceComMediaStream& aStream,

                                   CSdpMediaField& aMediaLine ) const;

        /**

         * Sets the MSRP connection usage for the MSRP based m-lines

         */

        void SetConnectionAttributeL(CMceComMessageStream& aStream,

                CSdpMediaField& aMediaLine);

        void DecodeClientAttributesL( CSdpMediaField& aMediaLine, 

                                      CMceComMediaStream& aStream ) const; 

    private:        

        RStringF iFileSelectorStr;

        RStringF iFileTransferidStr;    

        RStringF iFileDispositionStr;

        RStringF iAcceptWrappedTypesStr;

        RStringF iPathStr;

        RStringF iAcceptTypesStr;

        RStringF iNetType;

        RStringF iAddressType;

        RStringF iConnectionStr;

    };

#endif //CMceMessageSdpCodec_H