multimediacommsengine/mmceshared/inc/mcecomvideostream.h
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     1 /*
       
     2 * Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:    
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 
       
    21 #ifndef CMCECOMVIDEOSTREAM_H
       
    22 #define CMCECOMVIDEOSTREAM_H
       
    23 
       
    24 #include <e32std.h>  		
       
    25 #include "mcecommediastream.h"
       
    26 
       
    27 // FORWARD DECLARATIONS
       
    28 
       
    29 class CMceComVideoCodec;
       
    30 
       
    31 /**
       
    32  * 
       
    33  *
       
    34  * @lib 
       
    35  */
       
    36 class CMceComVideoStream: public CMceComMediaStream
       
    37 	{
       
    38 
       
    39 public: // Constructors and destructor
       
    40 
       
    41     /**
       
    42     * Constructor
       
    43     */
       
    44     static CMceComVideoStream* NewL();
       
    45 
       
    46     /**
       
    47     * Constructor
       
    48     */
       
    49     static CMceComVideoStream* NewLC();
       
    50 
       
    51     /**
       
    52     * Destructor.
       
    53     */
       
    54 	~CMceComVideoStream();
       
    55 
       
    56 public: // Functions
       
    57 
       
    58     /**
       
    59     * Adds codec to the stream.
       
    60     * @param aCodec codec to be added to the stream.
       
    61 	*	     Ownership is transferred.
       
    62     */
       
    63 	void AddCodecL( CMceComCodec* aCodec);
       
    64      
       
    65      
       
    66     /**
       
    67     * Removes codec from the stream.
       
    68     * @param aCodec codec to be added to the stream.
       
    69 	*	     Ownership is transferred.
       
    70     */
       
    71     void RemoveCodecL( CMceComCodec* aCodec );
       
    72 
       
    73 	/**
       
    74 	* Return pointer to codec from the list of codecs.
       
    75 	* aIndex index of codec to get.
       
    76 	*/
       
    77 	CMceComVideoCodec* CodecL( TInt aIndex ) const;
       
    78 
       
    79 	/**
       
    80 	* Returns number of codecs in the stream.
       
    81 	*/
       
    82 	TInt CodecCount() const;
       
    83 
       
    84     /**
       
    85     * Returns the available codecs to the session.
       
    86     * @return codecs available for the session.
       
    87     */
       
    88 	const RPointerArray<CMceComVideoCodec>& Codecs() const;
       
    89 
       
    90 public: // serialization
       
    91 
       
    92 
       
    93     /**
       
    94     * Internalizes flat data
       
    95     * @param aReadStream read stream
       
    96     */
       
    97     void InternalizeFlatL( RReadStream& aReadStream );
       
    98 
       
    99     /**
       
   100     * Externalizes flat data
       
   101     * @param aWriteStream write stream
       
   102     */
       
   103     void ExternalizeFlatL( RWriteStream& aWriteStream );
       
   104     
       
   105     /**
       
   106     * Internalizes
       
   107     * @param aReadStream read stream
       
   108     */
       
   109     void InternalizeL( MMceComSerializationContext& aSerCtx );
       
   110     
       
   111     /**
       
   112     * Externalizes
       
   113     * @param aWriteStream write stream
       
   114     */
       
   115     void ExternalizeL( MMceComSerializationContext& aSerCtx );
       
   116 
       
   117 
       
   118 public://from CMceComMediaStream
       
   119 
       
   120 
       
   121     /**
       
   122     * Initializes 
       
   123     * @param aParent the parent
       
   124     */
       
   125     void InitializeL( CMceComSession& aParent );
       
   126 
       
   127     /**
       
   128     * Updates 
       
   129     * @param aStream new stream
       
   130     */
       
   131     void UpdateL( CMceComMediaStream& aStream );
       
   132 
       
   133     /**
       
   134     * Clones
       
   135     */
       
   136     CMceComMediaStream* CloneL();
       
   137     
       
   138     void ReorderCodecs();
       
   139     
       
   140 protected: // Functions
       
   141 
       
   142     /**
       
   143     * Constructor
       
   144     */
       
   145 	CMceComVideoStream();
       
   146 	
       
   147     /**
       
   148     * second-phase constructor
       
   149     */
       
   150 	void ConstructL();
       
   151 	
       
   152     /**
       
   153      * second-phase copy constructor
       
   154      */
       
   155 	void ConstructL( CMceComVideoStream& aStream );
       
   156 	
       
   157     /**
       
   158     * Searches for codec matching with input codec instance or sdp name
       
   159     * @param aCodec the search term
       
   160     * @return matching codec or NULL if not found
       
   161     */
       
   162     CMceComCodec* FindCodecL( CMceComCodec& aCodec );
       
   163 
       
   164 	/**
       
   165 	* Find index of codec in the list of codecs.
       
   166 	* aCodec codec to search for.
       
   167 	*/
       
   168 	TInt FindCodecFromList( CMceComCodec* aCodec) const;
       
   169 	
       
   170 	/**
       
   171 	* Removes a codec from the list of codecs.
       
   172 	* @param aIndex index of codec to be removed.
       
   173 	*/
       
   174 	void RemoveCodecFromListL( TInt aIndex );
       
   175 
       
   176 	/**
       
   177 	* Clears list of codecs and deletes each codec in it.
       
   178 	*/
       
   179 	void DestroyCodecs();
       
   180     
       
   181 
       
   182 #ifdef MCE_COMMON_SERVER_SIDE
       
   183     
       
   184 protected:
       
   185 
       
   186 
       
   187     /**
       
   188     * Synchronizes stream's codecs
       
   189     * @param aRoleAnswerer is answerer
       
   190     */
       
   191     void SynchronizeL( TBool aRoleAnswerer );
       
   192        
       
   193     /**
       
   194     * Update default codec to reflect current negotiation
       
   195     */
       
   196     void UpdateDefaultCodecL();
       
   197 
       
   198     /**
       
   199     * Prepares stream for offer/answer
       
   200     */
       
   201     void PrepareL();
       
   202    
       
   203     /**
       
   204     * Return mcc stream type
       
   205     * @return mcc stream type
       
   206     */
       
   207     TInt MccStreamType() const;
       
   208 
       
   209     /**
       
   210     * Return mcc link type
       
   211     * @return mcc link type
       
   212     */
       
   213     TInt MccLinkType() const;
       
   214     
       
   215     /**
       
   216     * Update default codecs of associated local streams to reflect
       
   217     * current negotiation
       
   218     */
       
   219     void UpdateDefaultCodecForAssociatedLocalL( CMceComCodec* aNewDefaultCodec );
       
   220 
       
   221 
       
   222 #endif//MCE_COMMON_SERVER_SIDE	
       
   223 
       
   224 protected: // Owned data
       
   225 
       
   226     /**
       
   227      * codecs
       
   228      */
       
   229 	RPointerArray<CMceComVideoCodec> iCodecs;
       
   230 
       
   231 #ifdef EUNIT_TEST
       
   232     friend class UT_CMceComVideoStream;
       
   233     friend class UT_CMceMediaSdpCodec;
       
   234     friend class UT_CMceVideoSdpCodec;
       
   235 #endif
       
   236 	};
       
   237 
       
   238 
       
   239 
       
   240 #endif