multimediacommscontroller/mmccredpayloadformat/inc/mccreddecoder.h
changeset 0 1bce908db942
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/multimediacommscontroller/mmccredpayloadformat/inc/mccreddecoder.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,102 @@
+/*
+* Copyright (c) 2005-2006 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:    Decoder capable to handle redundancy format RTP payload.
+*
+*/
+
+
+
+
+#ifndef MCCREDDECODER_H
+#define MCCREDDECODER_H
+
+//  INCLUDES
+#include    "mccredencdecbase.h"
+
+/**
+*  Redundancy RTP payload format decoder.
+*
+*  @lib mmccredplformat.dll
+*  @since Series 60 3.0
+*/
+class CMccRedDecoder : public CMccRedEncDecBase
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Two-phased constructor.
+        */
+        static CMccRedDecoder* NewL();
+        
+        /**
+        * Destructor.
+        */
+        virtual ~CMccRedDecoder();
+
+    public: // New functions
+        
+        /**
+        * Decode encoding(s) from RTP payload given.
+        * @since    Series 60 3.0
+        * @param    aCurTimeStamp   Timestamp of the RTP packet under decoding
+        * @return   Number of data blocks decoded or system wide error code.
+        */
+        TInt DecodePayload( TUint aCurTimeStamp );
+
+    private:    // Functions from base classes
+        
+        /**
+        * From CMccRedEncDecBase. Initializes decoder.
+        */
+        void DoInitializeL( TInt aRedBlockCount, TInt aMaxPayloadSize,
+            TInt aNumOfEncodings );
+            
+    private:
+
+        class TRedHeaderInfo
+            {
+            public:
+                TUint8 iBlockPT;
+                TUint iTimeStamp;
+                TUint iBlockLength;
+                TUint8* iBlockIndex;
+            };
+            
+        /**
+        * C++ default constructor.
+        */
+        CMccRedDecoder();
+
+        /**
+        * Get info about audio data blocks in a RTP payload buffer
+        */
+        TInt GetBlockInfos( RArray<TRedHeaderInfo>& aBlockInfos,
+                            const TDesC8& aRTPPayload );
+
+    private:    // Data
+         
+         // Time stamp from the RTP header
+         TUint iCurTimeStamp;
+         
+         // Contains primary data blocks timestamp from previous RTP payload
+         TInt iLatestTimeStamp;
+         
+         // Used to carry block indexes, block lengths etc.
+         RArray<TRedHeaderInfo> iRedHeaderInfo;
+
+    };
+
+#endif      // MCCREDDECODER_H   
+            
+// End of File