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1 /* |
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2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Single media stream for RTP/TCP streamer* |
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15 */ |
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16 |
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17 |
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18 |
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19 |
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20 // INCLUDE FILES |
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21 #include "CCRRtpTcpStream.h" |
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22 #include "CCRRtpTcpObserver.h" |
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23 #include <es_sock.h> |
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24 #include <e32math.h> |
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25 #include "videoserviceutilsLogger.h" |
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26 |
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27 // CONSTANTS |
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28 const TInt KReceiverReportLength( 12 ); |
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29 |
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30 // ============================ MEMBER FUNCTIONS =============================== |
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31 |
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32 // ----------------------------------------------------------------------------- |
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33 // CCRRtpTcpStream::CCRRtpTcpStream |
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34 // ----------------------------------------------------------------------------- |
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35 // |
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36 CCRRtpTcpStream::CCRRtpTcpStream( MCRRtpTcpObserver& aObserver ) |
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37 : iObserver(aObserver) |
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38 { |
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39 iSSRC = Math::Random(); |
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40 } |
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41 |
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42 // ----------------------------------------------------------------------------- |
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43 // CCRRtpTcpStream::NewL |
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44 // ----------------------------------------------------------------------------- |
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45 // |
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46 CCRRtpTcpStream* CCRRtpTcpStream::NewL( MCRRtpTcpObserver& aObserver ) |
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47 { |
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48 CCRRtpTcpStream* self = new( ELeave ) CCRRtpTcpStream( aObserver ); |
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49 CleanupStack::PushL( self ); |
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50 self->ConstructL(); |
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51 CleanupStack::Pop( self ); |
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52 return self; |
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53 } |
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54 |
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55 // ----------------------------------------------------------------------------- |
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56 // CCRRtpTcpStream::ConstructL |
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57 // ----------------------------------------------------------------------------- |
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58 // |
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59 void CCRRtpTcpStream::ConstructL() |
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60 { |
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61 // None |
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62 } |
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63 |
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64 // ----------------------------------------------------------------------------- |
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65 // CCRRtpTcpStream::~CCRRtpTcpStream |
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66 // ----------------------------------------------------------------------------- |
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67 // |
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68 CCRRtpTcpStream::~CCRRtpTcpStream() |
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69 { |
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70 // None |
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71 } |
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72 |
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73 // ----------------------------------------------------------------------------- |
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74 // CCRRtpTcpStream::ForwardPacketAvailable |
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75 // ----------------------------------------------------------------------------- |
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76 // |
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77 void CCRRtpTcpStream::PacketAvailable( TInt aChannel ) |
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78 { |
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79 // Nothing to to do for RTP, just ignore |
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80 if ( !( aChannel % 2 ) ) |
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81 { |
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82 return; |
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83 } |
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84 |
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85 // Very simple Receiver Report generation: |
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86 // - RC=0, no SSRC report blocks -> no statistics keeping |
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87 // - one RR for every SR received -> no timing, back-off, etc |
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88 TBuf8<KReceiverReportLength> chunk( KNullDesC8 ); |
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89 chunk.SetLength( KReceiverReportLength ); |
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90 |
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91 // RTSP header |
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92 chunk[0] = ( TUint8 )( 0x24 ); // magic '$' for embedded binary in RTSP |
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93 chunk[1] = ( TUint8 )( aChannel ); // enbedded RTSP channel |
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94 // Embedded packet length, fixed |
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95 BigEndian::Put16( ( TUint8* )chunk.Ptr() + 2, 8 ); |
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96 |
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97 // RR |
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98 chunk[4] = 0x80; // v=2, p=0, rc=0 |
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99 chunk[5] = 201; // PT= RR= 201 |
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100 // Length=1 ( in 32bits, -1 ) |
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101 BigEndian::Put16( ( TUint8* )chunk.Ptr() + 6, 1 ); |
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102 BigEndian::Put32( ( TUint8* )chunk.Ptr() + 8, iSSRC ); |
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103 |
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104 iObserver.ForwardRtpTcpChunck( chunk ); |
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105 } |
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106 |
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107 // End of File |