realtimenetprots/sipfw/SDP/api/SdpTimeField.h
changeset 0 307788aac0a8
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SDP/api/SdpTimeField.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,230 @@
+/*
+* Copyright (c) 2003-2009 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:
+* Name          : SdpTimeField.h
+* Part of       : SDP Codec
+* Interface     : SDK API, SDP Codec API
+* Version       : 1.0
+*
+*/
+
+
+
+#ifndef CSDPTIMESFIELD_H
+#define CSDPTIMESFIELD_H
+
+//  INCLUDES
+#include <e32base.h>
+#include <stringpool.h>
+
+// FORWARD DECLARATIONS
+class RReadStream;
+class RWriteStream;
+class CSdpRepeatField;
+
+// CLASS DECLARATION
+/**
+ *  @publishedAll
+ *  @released
+ *
+ *	This class encapsulates the time field and the related zero or 
+ *  more repeat times fields and an optional time zone adjustment
+ *  field of the Session Description Protocol.
+ *
+ *	The normative reference for correct formatting and values is
+ *	draft-ietf-mmusic-sdp-new-14 unless specified otherwise in
+ *  member documentation. The implementation supports this normative
+ *  reference, but does not enforce it fully. 
+ *
+ *  @lib sdpcodec.lib
+ */
+class CSdpTimeField : public CBase
+	{
+    public: // Constructors and destructor
+        /**
+         *	Constructs a time field.
+		 * 
+         *	@param aText A correctly formatted time field value
+         *         terminated by a CRLF followed by zero or more repeat 
+         *         times and zero or one time zone adjustment fields 
+         *         separeted by a CRLF.
+		 *	@param aRecurse Flag to specify whether to decode subfields 
+		 *         also (ETrue) or only the time field (EFalse).
+         *	@return a new instance.
+         */
+		IMPORT_C static CSdpTimeField * DecodeL(const TDesC8& aText, 
+                                                TBool aRecurse = ETrue);
+
+        /**
+         *	Constructs a time field and adds the pointer to the cleanup stack.
+		 *	
+         *	@param aText A correctly formatted time field value 
+         *         terminated by a CRLF followed by zero or more repeat 
+         *         times and zero or one time zone adjustment fields 
+         *         separeted by a CRLF.
+		 *	@param aRecurse Flag to specify whether to decode subfields 
+		 *         also (ETrue) or only the time field (EFalse).
+         *	@return a new instance.
+         */
+		IMPORT_C static CSdpTimeField * DecodeLC(const TDesC8& aText,
+                                                TBool aRecurse = ETrue);
+
+        /**
+         *	Constructs a time field.
+		 *	
+         *	@param aStartTime Session start time.
+         *	@param aStopTime Session end time that must be 
+         *         greater than or equal to the start time.
+         *	@return a new instance.
+         */
+		IMPORT_C static CSdpTimeField * NewL(const TDesC8& aStartTime,
+									        const TDesC8& aStopTime);
+
+        /**
+         *	Constructs a time field and adds the pointer to the cleanup stack.
+		 *	
+         *	@param aStartTime Session start time.
+         *	@param aStopTime Session end time that must be 
+         *         greater than or equal to the start time.
+         *	@return a new instance.
+         */
+		IMPORT_C static CSdpTimeField * NewLC(const TDesC8& aStartTime,
+									        const TDesC8& aStopTime);
+
+		/**
+		 *	Deletes the resources held by the instance.
+		 */
+		IMPORT_C ~CSdpTimeField();
+
+    public: // New functions
+		/**
+		 *	Outputs the field formatted according to SDP syntax and including
+		 *  the terminating CRLF. Optionally output also the related repeat
+		 *  times.
+		 * 
+		 *	@param aStream Stream used for output. On return 
+         *         the stream includes correctly formatted time field with 
+         *         repeat fields if aRecurse is ETrue.
+		 *	@param aRecurse Flag to specify whether to output subfields
+		 *         also (ETrue) or only the time field (EFalse).
+		 */
+		IMPORT_C void EncodeL(RWriteStream& aStream, TBool aRecurse = ETrue) const;
+
+		/**
+		 *	Creates a new instance that is equal to the target.
+		 *  Optionally also related repeat times are cloned.
+		 *
+		 *	@param aRecurse Flag to specify whether to clone subfields 
+		 *         also (ETrue) or only the time field (EFalse).
+		 *	@return a new instance.
+		 */
+		IMPORT_C CSdpTimeField * CloneL(TBool aRecurse = ETrue) const;
+
+		/**	
+		 *	Compares this instance to another for equality. Subfields are
+		 *	included in comparison if present.
+		 *
+		 *	@param aObj The instance to compare to.
+		 *	@return ETrue if equal, EFalse if not.
+		 */
+		IMPORT_C TBool operator == (const CSdpTimeField & aObj) const;
+
+		/**
+		 *	Checks the consistency of the time description and it's subfields.
+		 *.
+		 *	@return	ETrue if time description is valid and EFalse if not.
+		 */
+		IMPORT_C TBool IsValid() const;
+
+		/**
+		 *	Gets the session start time.
+		 *
+		 *	@return The session start time.
+		 */
+		IMPORT_C const TDesC8& StartTime() const;
+
+		/**
+		 *	Gets the session stop time.
+		 *
+		 *	@return The session stop time.
+		 */
+		IMPORT_C const TDesC8& StopTime() const;
+
+		/**
+		 *	Sets the session start and stop times.
+		 *
+         *	@param aStartTime Session start time..
+         *	@param aStopTime Session end time that must be 
+         *         greater than or equal to the start time.
+		 *	@leave KErrSdpCodecTimeField if start time and stop time are not 
+         *         correct as defined draft-ietf-mmusic-sdp-new-14.
+		 */
+		IMPORT_C void SetTimesL(const TDesC8& aStartTime, const TDesC8& aStopTime);
+
+		/**
+		 *	Gets the set of repeat times fields related to this time field.
+		 *  This array is used directly for element insertion and removal.
+		 *
+		 *	The objects referenced from the array are owned by the media field
+		 *  instance and must not be deleted. An object can be removed from the 
+		 *  media description by setting the corresponding element to zero. By
+		 *  doing so, the calling party receives ownership of the removed object.
+		 *
+		 *	@return The set of repeat fields.
+		 */
+		IMPORT_C RPointerArray<CSdpRepeatField>& RepeatFields();
+	
+    public:
+		/**
+         *  Externalizes the object to stream
+         *
+         *  @param aStream Stream where the object's state will be stored
+         */
+		void ExternalizeL(RWriteStream& aStream) const;
+		
+		/**
+         *  Creates object from the stream data
+         *
+         *  @param aStream Stream where the object's state will be read
+         *  @return Initialized object
+         */
+		static CSdpTimeField* InternalizeL(RReadStream& aStream);
+        
+        /**
+         *  Creates object from the stream data.
+         *	Does the "2nd phase construction" of internalization.
+         *
+         *  @param aStream Stream where the object's state will be read
+         */
+        void DoInternalizeL(RReadStream& aStream);
+
+	private:
+   		CSdpTimeField();
+
+		void ConstructL(const TDesC8& aText, TBool aRecurse=ETrue);
+		void ConstructL(const TDesC8& aStartTime, const TDesC8& aStopTime);
+
+        TBool RepeatFieldsCompare(const CSdpTimeField& aObj) const;
+
+    private: // Data
+		HBufC8* iStartTime;
+		HBufC8* iStopTime;
+		RPointerArray<CSdpRepeatField> iRFields;
+        RStringPool iStringPool;
+
+		void __DbgTestInvariant() const;
+
+	};
+
+#endif // CSDPTIMESFIELD_H