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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: Common definitions for rtsp implementation* |
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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 #ifndef CCRRTSPCOMMON_H |
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21 #define CCRRTSPCOMMON_H |
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22 |
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23 // INCLUDES |
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24 #include <e32base.h> |
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25 #include <in_sock.h> |
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26 |
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27 // CONSTANTS |
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28 /** Max len for synchronization source id texttual presentation. SSRC is 32-bit number |
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29 * so this needs to be able to hold 2^^32 numerical value */ |
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30 const TInt KSSRCMaxLen( 30 ); |
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31 /** Max expected RTP packet len, given to symbian rtp stack that wants to know */ |
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32 const TInt KAverageExpectedRtpPacketMaxSize( 1500 ); |
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33 |
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34 // following five are guestimates |
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35 /** Average expected audio packet size */ |
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36 const TInt KAverageAudioPacketSize( 400 ); |
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37 /** Average expected video packet size */ |
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38 const TInt KAverageVideoPacketSize( 700 ); |
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39 /** Average expected rtp control packet size */ |
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40 const TInt KAverageRTPControlPacketSize( 30 ); |
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41 /** Number of rtp packets in our buffer, max */ |
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42 const TInt KRTPDataPacketBufferLen( 100 ); |
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43 /** Number of rtpc packets in our buffer, max */ |
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44 const TInt KRTPControlPacketBufferLen( 20 ); |
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45 |
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46 // followint strings _MAY_NOT_ be localized. |
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47 _LIT8( KCR2NewLines, "\r\n\r\n" ); |
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48 _LIT8( KCRCSeq, "CSeq: " ); |
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49 _LIT8( KCRRTSP10, "RTSP/1.0" ); |
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50 _LIT8( KCROPTIONS, "OPTIONS " ); |
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51 _LIT8( KCROPTIONSNoSpace, "OPTIONS" ); |
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52 _LIT8( KCRDESCRIBE, "DESCRIBE " ); |
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53 _LIT8( KCRDESCRIBENoSpace, "DESCRIBE" ); |
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54 _LIT8( KCRTEARDOWN,"TEARDOWN " ); |
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55 _LIT8( KCRTEARDOWNNoSpace,"TEARDOWN" ); |
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56 _LIT8( KCRPAUSE,"PAUSE " ); |
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57 _LIT8( KCRPAUSENoSpace,"PAUSE" ); |
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58 _LIT8( KCRSETUP, "SETUP " ); |
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59 _LIT8( KCRSETUPNoSpace, "SETUP" ); |
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60 _LIT8( KCRClient_Port, "client_port=" ); |
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61 _LIT8( KCRInterleaved, "interleaved=" ); |
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62 _LIT8( KCRAcceptSDP, "Accept: application/sdp\r\n" ); |
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63 _LIT8( KCRPort, "port=" ); |
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64 _LIT8( KCRDestination, "destination=" ); |
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65 _LIT8( KCRPLAY, "PLAY " ); |
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66 _LIT8( KCRPLAYNoSpace, "PLAY" ); |
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67 _LIT8( KCRRTSPReplyHeader, "RTSP/1.0 " ); |
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68 _LIT8( KCRRTSPContentLength, "Content-length: " ); |
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69 _LIT8( KCRRTSPDefaultUserAgent, "NokiaVideoCenter" ); |
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70 _LIT8( KCRRTSPUserAgentHeader, "User-Agent: %S\r\n" ); |
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71 _LIT8( KCRRTSPXWapProfile, "x-wap-profile: %S\r\n" ); |
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72 _LIT8( KCRRTSPBandwidth, "Bandwidth: %d\r\n" ); |
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73 _LIT8( KCRSessionStr, "Session: " ); |
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74 _LIT8( KCRNewLine, "\r\n" ); |
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75 _LIT8( KCRSpace, " " ); |
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76 _LIT8( KCRSemiColon, ";" ); |
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77 _LIT8( KCRDash, "-" ); |
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78 _LIT8( KCRLineFeed, "\n" ); |
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79 _LIT8( KCRSDPmLine, "m=" ); |
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80 _LIT8( KCRSDPmLineIsVideo, "m=video" ); |
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81 _LIT8( KCRSDPRTPAVP, "RTP/AVP" ); |
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82 _LIT8( KCRSDPRTPAVPTCP, "RTP/AVP/TCP" ); |
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83 _LIT8( KCRSDPRTPAVPUDP, "RTP/AVP/UDP" ); |
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84 _LIT8( KCRSDPMulticast, "multicast" ); |
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85 _LIT8( KCRSDPmLineIsAudio, "m=audio" ); |
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86 _LIT8( KCRSDPcLine, "c=" ); |
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87 _LIT8( KCRSDPbLine, "b=AS" ); |
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88 _LIT8( KCRNlAndSession, "\r\nSession: " ); |
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89 _LIT8( KCRRtpInfo, "RTP-Info: " ); |
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90 _LIT8( KCRUrlStr, "url=" ); |
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91 _LIT8( KCRSeqStr, "seq=" ); |
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92 _LIT8( KCRRtptimeStr, "rtptime=" ); |
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93 _LIT8( KCRServerPort, "server_port" ); |
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94 _LIT8( KCRSSRC, ";ssrc=" ); |
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95 _LIT8( KCRTransportHeaderUDP, "Transport: RTP/AVP;unicast;" |
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96 "client_port=%d-%d;mode=play\r\n" ); |
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97 _LIT8( KCRTransportHeaderTCP, "Transport: RTP/AVP/TCP;interleaved=%d-%d\r\n" ); |
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98 _LIT8( KCRTransportHeaderMulticast, "Transport: RTP/AVP;multicast\r\n" ); |
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99 _LIT8( KCRRangeHeader, "Range: npt=" ); |
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100 _LIT8( KCRRangeHeaderLiveStream, "Range: npt=now-" ); |
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101 _LIT8( KCRRtpMap, "a=rtpmap" ); |
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102 _LIT8( KCROptionsReply, |
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103 "RTSP/1.0 200 OK\r\nCseq: %d\r\n" |
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104 "Public: DESCRIBE, SETUP, PAUSE, " |
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105 "TEARDOWN, PLAY, OPTIONS\r\n\r\n" ); |
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106 |
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107 // Authentication strings |
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108 _LIT8( KCRAuthBasic, "Basic" ); |
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109 _LIT8( KCRAuthDigest, "Digest" ); |
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110 _LIT8( KCRAuthRealm, "realm=\"" ); |
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111 _LIT8( KCRAuthNonce, "nonce=\"" ); |
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112 _LIT8( KCRAuthOpaque, "opaque=\"" ); |
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113 _LIT8( KCRAuthorizationHeader, |
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114 "Authorization: Digest username=\"%S\", realm=\"%S\"," |
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115 " nonce=\"%S\", uri=\"%S\", response=\"%S\", opaque=\"%S\"\r\n" ); |
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116 _LIT8( KCRAuthorizationHeaderNoOpaque, |
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117 "Authorization: Digest username=\"%S\"," |
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118 " realm=\"%S\", nonce=\"%S\", uri=\"%S\", response=\"%S\"\r\n" ); |
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119 _LIT8( KCRContentBaseHeader, "Content-Base: ") ; |
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120 _LIT8( KCRAuthorizationBasicHeader, "Authorization: Basic %S\r\n" ); |
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121 |
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122 // MACROS |
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123 // None |
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124 |
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125 // DATA TYPES |
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126 /** |
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127 * TCRRTSPStage is used by both RTSP packet source and ROP sink. It is used |
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128 * to indicate the stage in RTSP negotiation where the packet source or rop sink |
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129 * currently is in |
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130 */ |
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131 enum TCRRTSPStage |
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132 { |
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133 ERTSPInit = 0, /**< nothing done yet , must have numerical id 0 */ |
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134 ERTSPOptSent, /**< Options command has been sent */ |
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135 ERTSPDescSent, /**< Describe command has been sent */ |
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136 ERTSPDelayedSetup, /**< Setup command need to be delayed */ |
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137 ERTSPSetupAudioSent, /**< Setup command for audio has been sent */ |
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138 ERTSPSetupVideoSent, /**< Setup command has video been sent */ |
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139 ERTSPReadyToPlay, /**< Everything in order with remote server */ |
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140 ERTSPPlaySent, /**< Play command has been sent */ |
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141 ERTSPPauseSent, /**< Pause command has been sent */ |
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142 ERTSPPlaying, /**< Play command has been sent and 200 OK received */ |
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143 ERTSPTearDownSent, /**< Teardown command has been sent */ |
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144 ERTSPLastStage /**< This is not a real stage, keep this identifier as item, used for indexing */ |
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145 }; |
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146 |
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147 /** |
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148 * Enum indicating which transport to use for RTP streaming |
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149 */ |
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150 enum TCRRTPTransport |
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151 { |
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152 ERTPOverUDP = 0, /**< stream RTP over UDP, default */ |
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153 ERTPOverTCP, /**< stream RTP over TCP, interleaved in RTSP stream */ |
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154 ERTPOverMulticast /**< stream RTP over multicast UDP */ |
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155 }; |
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156 |
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157 // FORWARD DECLARATIONS |
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158 // None |
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159 |
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160 // CLASS DECLARATION |
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161 |
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162 /** |
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163 * Base-class for RTSP commands and responses. |
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164 * |
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165 * @lib CommonRecordingEngine.lib |
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166 * @since Series 60 3.0 |
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167 */ |
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168 class CCRRtspCommon : public CBase |
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169 { |
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170 |
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171 public: // Constructors and destructor |
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172 |
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173 /** |
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174 * Destructor. |
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175 */ |
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176 virtual ~CCRRtspCommon( ); |
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177 |
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178 public: // New functions |
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179 |
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180 /** |
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181 * Method that is used to give rtsp response / command to this class. |
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182 * @since Series 60 3.0 |
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183 * @param aString is the response string |
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184 * @return none. May leave with symbian error codes. At least following may be |
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185 * seen: KErrUnderflow if there is \r\n\r\n sequence in the string |
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186 * marking end of response or if there is content(like SDP) and the |
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187 * content lenght is too short; KErrNotSupported if it doesn't look |
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188 * like RTSP at all. |
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189 */ |
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190 virtual void TryParseL( const TDesC8 &aString ) = 0; |
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191 |
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192 /** |
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193 * Method for getting content len. KErrNotFound if no content. KErrNotReady |
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194 * if TryParseL previously did leave |
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195 * @since Series 60 3.0 |
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196 * @param none . |
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197 * @return content len. |
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198 */ |
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199 TInt ContentLen( void ); |
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200 |
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201 /** |
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202 * Method for getting content. Most usually the content is SDP. |
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203 * @since Series 60 3.0 |
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204 * @param none |
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205 * @return tring descriptor allocated by this class so when |
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206 * this class instance gets deleted, the buffer |
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207 * content will point to invalid data. |
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208 */ |
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209 TPtrC8& Content( void ); |
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210 |
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211 /** |
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212 * Method for getting sequence number |
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213 * @since Series 60 3.0 |
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214 * @param none. |
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215 * @return CSeq. |
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216 */ |
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217 TInt CSeq( void ); |
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218 |
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219 /** |
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220 * Method for setting sequence number |
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221 * @since Series 60 3.0 |
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222 * @param aCSeq is CSeq number. |
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223 * @return none. |
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224 */ |
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225 void SetCSeq( TInt aCSeq ); |
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226 |
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227 /** |
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228 * Method for getting session id. |
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229 * @since Series 60 3.0 |
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230 * @param aId is string descriptor allocated by caller that |
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231 * will have its content set to block allocated by instance |
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232 * of this class containing the session id. |
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233 * @return KErrNone if no error, KErrNotFound if session id is not there. |
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234 */ |
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235 TInt SessionId( TPtrC8& aId ); |
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236 |
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237 /** |
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238 * Method for setting session id. |
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239 * @since Series 60 3.0 |
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240 * @param aId is string descriptor allocated by caller that contains |
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241 * new session id and whose content(memory area pointed by pointer |
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242 * returned by Ptr() method call) will remain intact for the |
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243 * lifetime of instance of this class. |
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244 * @return none. |
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245 */ |
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246 void SetSessionId( TPtrC8& aId ); |
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247 |
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248 /** |
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249 * Method for getting client port |
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250 * @since Series 60 3.0 |
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251 * @param none. |
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252 * @return client port of KErrNotFound if none found. |
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253 */ |
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254 TInt ClientPort( void ); |
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255 |
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256 /** |
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257 * Method for setting client port |
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258 * @since Series 60 3.0 |
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259 * @param aPort is the client port number. |
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260 * @return none. |
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261 */ |
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262 void SetClientPort( TInt aPort ); |
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263 |
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264 /** |
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265 * Method for setting range |
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266 * @since Series 60 3.0 |
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267 * @param aLower is where to start from. |
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268 * @param aUpper is where to stop. Negative values mean eternity. |
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269 * @return none |
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270 */ |
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271 void SetRange( TReal aLower, TReal aUpper ); |
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272 |
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273 /** |
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274 * Method for getting range |
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275 * @since Series 60 3.0 |
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276 * @param aLower is where to start from. |
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277 * @param aUpper is where to stop. Negative values mean eternity. |
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278 * @return none. |
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279 */ |
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280 void GetRange( TReal& aLower, TReal& aUpper ); |
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281 |
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282 /** |
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283 * Method for parsing range header |
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284 * @since Series 60 3.0 |
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285 * @param none. |
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286 * @return none. |
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287 */ |
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288 void ParseRange( void ); |
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289 |
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290 /** |
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291 * Method for getting session opaque |
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292 * @since Series 60 3.0 |
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293 * @param none. |
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294 * @return reference to opaque or NULL. |
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295 */ |
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296 TDesC8& OpaqueL( void ); |
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297 |
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298 /** |
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299 * Method for getting session realm |
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300 * @since Series 60 3.0 |
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301 * @param none. |
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302 * @return reference to realm or NULL. |
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303 */ |
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304 TDesC8& RealmL( void ); |
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305 |
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306 /** |
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307 * Method for getting authentication type. |
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308 * @since Series 60 3.0 |
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309 * @param none. |
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310 * @return Reference to auth type found from RTSP reply. |
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311 */ |
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312 TDesC8& AuthenticationTypeL( void ); |
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313 |
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314 /** |
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315 * Method for getting session Nonce |
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316 * @since Series 60 3.0 |
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317 * @param none. |
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318 * @return Reference to nonce found from RTSP reply. |
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319 */ |
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320 TDesC8& NonceL( void ); |
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321 |
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322 /** |
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323 * Method for setting session nonce |
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324 * @since Series 60 3.0 |
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325 * @param aNonce is the nonce part of authenticated RTSP command/response. |
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326 * @return none. |
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327 */ |
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328 void SetNonceL( const TDesC& aNonce ); |
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329 |
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330 /** |
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331 * Mothod for setting authentication type |
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332 * @since Series 60 3.0 |
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333 * @param aAuthType is the authentication type. |
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334 * @return none. |
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335 */ |
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336 void SetAuthenticationTypeL( const TDesC8& aAuthType ); |
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337 |
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338 /** |
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339 * Method for setting session opaque |
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340 * @since Series 60 3.0 |
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341 * @param aOpaque is the opaque part of authenticated response. |
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342 * @return none. |
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343 */ |
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344 void SetOpaqueL( const TDesC& aOpaque ); |
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345 |
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346 /** |
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347 * Method for setting session realm |
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348 * @since Series 60 3.0 |
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349 * @param aRealm is the realm part of authenticated rtsp command. |
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350 * @return none. |
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351 */ |
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352 void SetRealmL( const TDesC& aRealm ); |
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353 |
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354 /** |
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355 * Method for setting session nonce |
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356 * @since Series 60 3.0 |
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357 * @param aNonce is the new nonce that will be sent with the command. |
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358 * @return none. |
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359 */ |
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360 void SetNonceL( const TDesC8& aNonce ); |
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361 |
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362 /** |
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363 * Method for setting session opaque |
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364 * @since Series 60 3.0 |
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365 * @param aOpaque is the new opaque that will be sent with the command. |
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366 * @return none. |
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367 */ |
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368 void SetOpaqueL( const TDesC8& aOpaque ); |
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369 |
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370 /** |
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371 * Method for setting session realm |
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372 * @since Series 60 3.0 |
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373 * @param aRealm is the new realm that will be sent with the command. |
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374 * @return none. |
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375 */ |
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376 void SetRealmL( const TDesC8& aRealm ); |
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377 |
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378 /** |
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379 * Method for setting rtsp username. |
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380 * @since Series 60 3.0 |
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381 * @param aUserName is the new username |
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382 * @return none. |
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383 */ |
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384 void SetUserNameL( const TDesC& aUserName ); |
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385 |
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386 /** |
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387 * Method for setting session password. |
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388 * @since Series 60 3.0 |
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389 * @param aPassWd is the password to use when generating digest for authenticated rtsp |
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390 * @return none. |
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391 */ |
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392 void SetPassWdL( const TDesC& aPassWd ); |
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393 |
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394 /** |
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395 * Method for setting session rtsp uri. |
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396 * @since Series 60 3.0 |
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397 * @param aUri is the string that will in RTSP command be written between command and text RTSP/1.0 strings. |
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398 * @return none. |
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399 */ |
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400 void SetRtspUriL( const TDesC& aUri ); |
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401 |
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402 /** |
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403 * Gets transport method. |
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404 * @since Series 60 3.0 |
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405 * @param none. |
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406 * @return transport method, default(ERTPOverUDP) if not present on command |
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407 */ |
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408 TCRRTPTransport Transport(); |
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409 |
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410 /** |
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411 * Sets transport method. |
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412 * @since Series 60 3.0 |
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413 * @param aTransport is the transport method to. This is used when constructing |
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414 * a SETUP command. |
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415 * @return none. |
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416 */ |
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417 void SetTransport( TCRRTPTransport aTransport ); |
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418 |
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419 /** |
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420 * Gets destination IP address if present |
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421 * @since Series 60 3.0 |
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422 * @param none. |
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423 * @return destination IP address or KAFUnspec |
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424 */ |
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425 const TInetAddr& Destination(); |
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426 |
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427 /** |
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428 * Gets flag whether stream is a live stream. |
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429 * @since Series 60 3.0 |
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430 * @param none. |
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431 * @return ETrue if stream is known to be a live stream. |
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432 */ |
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433 TBool IsLiveStream( void ); |
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434 |
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435 /** |
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436 * Getter for Content-base rtsp header content |
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437 * @since Series 60 3.0 |
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438 * @param none. |
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439 * @return content of content-base header or empty string |
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440 */ |
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441 TPtrC8 ContentBase( void ); |
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442 |
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443 protected: // Constructors and destructor |
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444 |
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445 /** |
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446 * default constructor |
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447 */ |
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448 CCRRtspCommon( void ); |
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449 |
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450 protected: // New methods |
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451 |
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452 /** |
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453 * Method for digging out CSeq from response. |
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454 * @since Series 60 3.0 |
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455 * @param none. |
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456 * @return none but will leave with KErrNotSupported if CSeq is not there. |
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457 */ |
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458 void FindCSeqL( void ); |
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459 |
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460 /** |
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461 * Method for digging out session id from response. Id will be stored in instance variable for future use. |
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462 * @since Series 60 3.0 |
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463 * @param none. |
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464 * @return none. |
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465 */ |
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466 void FindSessionIdL( void ); |
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467 |
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468 /** |
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469 * Method for digging ContentBase |
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470 * @since Series 60 3.0 |
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471 * @param none. |
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472 * @return none. |
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473 */ |
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474 void FindContentBase( void ); |
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475 |
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476 /** |
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477 * Method for digging out content/content len from response |
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478 * @since Series 60 3.0 |
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479 * @param none. |
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480 * @return none but will leave will KErrUnderflow |
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481 * if all content not yet received. |
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482 */ |
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483 void FindContentL( void ); |
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484 |
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485 /** |
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486 * method for finding client port from response or command. |
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487 * @since Series 60 3.0 |
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488 * @param none. |
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489 * @return none. |
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490 */ |
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491 void FindClientPorts( void ); |
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492 |
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493 /** |
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494 * finds transport method from response or command. |
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495 * @since Series 60 3.0 |
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496 * @param none. |
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497 * @return none. |
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498 */ |
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499 void FindTransport(); |
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500 |
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501 /** |
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502 * finds destination IP address from SETUP response or command |
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503 * @since Series 60 3.0 |
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504 * @param none. |
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505 * @return none. |
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506 */ |
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507 void FindDestination(); |
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508 |
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509 protected: // Data |
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510 |
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511 /** |
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512 * Buffer that holds the text being parsed. |
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513 */ |
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514 HBufC8* iRtspText; |
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515 |
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516 /** |
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517 * Len of possible content. |
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518 */ |
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519 TInt iContentLen; |
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520 |
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521 /** |
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522 * Possible content, if no content, set to( NULL, 0 ). |
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523 */ |
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524 TPtrC8 iContent; |
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525 |
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526 /** |
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527 * Sequence number, must be there. |
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528 */ |
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529 TInt iCSeq; |
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530 |
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531 /** |
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532 * Possible session id. |
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533 */ |
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534 TPtrC8 iSessionId; |
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535 |
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536 /** |
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537 * Possible client_port. |
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538 */ |
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539 TInt iClientPort; |
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540 |
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541 /** |
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542 * Transport method. |
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543 */ |
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544 TCRRTPTransport iTransport; |
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545 |
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546 /** |
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547 * Destination address |
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548 */ |
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549 TInetAddr iDestination; |
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550 |
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551 /** |
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552 * Range lower limit for Range: header. |
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553 */ |
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554 TReal iLowerRange; |
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555 |
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556 /** |
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557 * Range lower limit for Range: header. |
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558 */ |
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559 TReal iUpperRange; |
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560 |
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561 /** |
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562 * Authentication type. |
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563 */ |
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564 HBufC8* iAuthType; |
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565 |
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566 /** |
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567 * Realm. |
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568 */ |
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569 HBufC8* iRealm; |
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570 |
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571 /** |
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572 * Nonce. |
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573 */ |
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574 HBufC8* iNonce; |
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575 |
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576 /** |
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577 * Opaque. |
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578 */ |
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579 HBufC8* iOpaque; |
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580 |
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581 /** |
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582 * possible username, if server requires. |
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583 */ |
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584 HBufC8* iUserName; |
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585 |
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586 /** |
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587 * rtsp URL in 8bit descriptor. |
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588 */ |
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589 HBufC8* iUri; |
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590 |
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591 /** |
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592 * possible password, if server requires. |
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593 */ |
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594 HBufC8* iPassword; |
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595 |
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596 /** |
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597 * When this is set, it indicates that rtsp command/reply |
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598 * describes a live stream that cannot be paused or position set. |
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599 */ |
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600 TBool iIsLiveStream; |
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601 |
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602 /** |
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603 * Content of Content-base -header |
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604 */ |
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605 TPtrC8 iContentBase ; |
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606 }; |
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607 |
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608 #endif // CCRRTSPCOMMON_H |
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609 |
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610 // End of file |