dvrengine/CommonRecordingEngine/src/CCRRtpTcpStream.cpp
branchRCL_3
changeset 23 13a33d82ad98
parent 0 822a42b6c3f1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dvrengine/CommonRecordingEngine/src/CCRRtpTcpStream.cpp	Wed Sep 01 12:20:37 2010 +0100
@@ -0,0 +1,107 @@
+/*
+* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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:    Single media stream for RTP/TCP streamer*
+*/
+
+
+
+
+// INCLUDE FILES
+#include "CCRRtpTcpStream.h"
+#include "CCRRtpTcpObserver.h"
+#include <es_sock.h>
+#include <e32math.h>
+#include "videoserviceutilsLogger.h"
+
+// CONSTANTS
+const TInt KReceiverReportLength( 12 );
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CCRRtpTcpStream::CCRRtpTcpStream
+// -----------------------------------------------------------------------------
+//
+CCRRtpTcpStream::CCRRtpTcpStream( MCRRtpTcpObserver& aObserver )
+  : iObserver(aObserver)
+    {
+    iSSRC = Math::Random();
+    }
+
+// -----------------------------------------------------------------------------
+// CCRRtpTcpStream::NewL
+// -----------------------------------------------------------------------------
+//
+CCRRtpTcpStream* CCRRtpTcpStream::NewL( MCRRtpTcpObserver& aObserver )
+    {
+    CCRRtpTcpStream* self = new( ELeave ) CCRRtpTcpStream( aObserver );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CCRRtpTcpStream::ConstructL
+// -----------------------------------------------------------------------------
+//
+void CCRRtpTcpStream::ConstructL()
+    {
+    // None
+    }
+
+// -----------------------------------------------------------------------------
+// CCRRtpTcpStream::~CCRRtpTcpStream
+// -----------------------------------------------------------------------------
+//
+CCRRtpTcpStream::~CCRRtpTcpStream()
+    {
+    // None
+    }
+
+// -----------------------------------------------------------------------------
+// CCRRtpTcpStream::ForwardPacketAvailable
+// -----------------------------------------------------------------------------
+//
+void CCRRtpTcpStream::PacketAvailable( TInt aChannel )
+    {
+    // Nothing to to do for RTP, just ignore
+    if ( !( aChannel % 2 ) )
+        {
+        return;
+        }
+
+    // Very simple Receiver Report generation:
+    // - RC=0, no SSRC report blocks -> no statistics keeping
+    // - one RR for every SR received -> no timing, back-off, etc
+    TBuf8<KReceiverReportLength> chunk( KNullDesC8 );
+    chunk.SetLength( KReceiverReportLength );
+
+    // RTSP header
+    chunk[0] = ( TUint8 )( 0x24 );     // magic '$' for embedded binary in RTSP     
+    chunk[1] = ( TUint8 )( aChannel ); // enbedded RTSP channel
+    // Embedded packet length, fixed
+    BigEndian::Put16( ( TUint8* )chunk.Ptr() + 2, 8 ); 
+
+    // RR
+    chunk[4] = 0x80; // v=2, p=0, rc=0
+    chunk[5] = 201;  // PT= RR= 201
+    // Length=1 ( in 32bits, -1 )
+    BigEndian::Put16( ( TUint8* )chunk.Ptr() + 6, 1 );     
+    BigEndian::Put32( ( TUint8* )chunk.Ptr() + 8, iSSRC );
+
+    iObserver.ForwardRtpTcpChunck( chunk );
+    }
+
+//  End of File