rtp/srtpstack/inc/srtppacketsrtcp.h
changeset 0 307788aac0a8
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rtp/srtpstack/inc/srtppacketsrtcp.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,128 @@
+/*
+* Copyright (c) 2004 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:    SRTP packet class (SRTCP)
+*
+*/
+
+
+
+
+#ifndef __SRTP_PACKET_SRTCP_H__
+#define __SRTP_PACKET_SRTCP_H__
+
+// INCLUDES
+#include <in_sock.h>
+#include "srtppacket.h"
+#include "srtppacketrtcp.h"
+
+
+// FORWARD DECLARATIONS
+class CSRTPCryptoHandler;
+/**
+* Contains general SRTCP-specific packet routines
+*/
+class CSRTPPacketSRTCP : public CSRTPPacketRTCP
+    {
+    public:
+    
+        /**
+	    * Constructor.
+	    * @param aPacket a SRTCP packet
+	    * @param aHandler the cryptohandler for this packet
+	    * @leave KErrNone if success, system-wide error code otherwise
+	    */
+    	static CSRTPPacketSRTCP* NewL(const TDesC8& aPacket,
+                      CSRTPCryptoHandler& aHandler);
+
+        /**
+        * Get authentication tag
+        * @return authentication tag
+        */                                      
+        TPtrC8 AuthenticationTag();   
+        
+        /**
+        * Get master key identifier
+        * @return TPtrC8 master key identifier
+        */                                                                 
+        TPtrC8 MasterKeyIdentifier();
+
+        
+        /**
+        * Allocate size for decrypted packet and copy payload + header
+        * @param aDecryptedPayloadPtr  decrypted payload to be copied
+        * @return HBufC8* decrypted packet
+        */                                      
+        HBufC8* CreateDecryptedPacketL(TUint8* aDecryptedPayloadPtr);
+
+    private: //methods
+
+        CSRTPPacketSRTCP (const TDesC8& aPacket,
+                      CSRTPCryptoHandler& aHandler);
+        ~CSRTPPacketSRTCP();                
+                        
+        void ConstructL();          
+        
+       /**
+        * Read Index number and update class member
+        * @return void
+        */                              
+        void UpdatePacketIndex();                          
+
+        /**
+        * Update payload length information
+        * @return void
+        */                              
+        void UpdatePayloadLength();
+        
+        /**
+        * Update authentication tag
+        * @return void
+        */                                      
+        void UpdateAuthenticationTag();    
+            
+        /**
+        * Update master key identifier
+        * @return void
+        */                                      
+        void UpdateMasterKeyIdentifier(); 
+                   
+        /**
+        * Count size of the decrypted packet
+        * @return TUint size of the decrypted packet
+        */                                      
+        TUint CountDecryptedPacketSize();  
+        
+                
+        /*
+        * Read Master Key Identifier (MKI) from packet
+        * @return TPtrC8 pointer to MKI
+        */                                            
+        TPtrC8 GetAuthenticationTag();   
+        
+        /*
+        * Read Master Key Identifier (MKI) from packet
+        * @return TPtrC8 pointer to MKI
+        */                                            
+        TPtrC8 GetMasterKeyIdentifier();        
+                            
+                    
+    private: //data
+        TPtrC8                iAuthenticationTag;   // auth. tag
+        TPtrC8                iMasterKeyIdentifier; // MKI
+    
+    };
+
+#endif // __SRTP_PACKET_SRTCP_H__
+
+