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1 // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Implements the avdtp "direct" (!muxed) transport channel object |
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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 @file |
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20 @internalComponent |
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21 */ |
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22 #include <bluetooth/logger.h> |
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23 #include "avdtpDirectChannel.h" |
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24 #include "avdtpTransportSession.h" |
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25 #include "avdtp.h" |
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26 #include "avdtputil.h" |
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27 |
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28 #ifdef __FLOG_ACTIVE |
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29 _LIT8(KLogComponent, LOG_COMPONENT_AVDTP); |
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30 #endif |
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31 |
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32 CDirectChannel* CDirectChannel::NewL(CAvdtpProtocol& aProtocol, |
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33 const TBTDevAddr& aRemoteDevice) |
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34 { |
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35 LOG_STATIC_FUNC |
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36 CDirectChannel* s = new (ELeave) CDirectChannel(aProtocol, aRemoteDevice); |
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37 return s; |
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38 } |
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39 |
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40 |
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41 CDirectChannel::CDirectChannel(CAvdtpProtocol& aProtocol, |
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42 const TBTDevAddr& aRemoteDevice) |
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43 : CTransportChannel(aProtocol, aRemoteDevice) |
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44 { |
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45 LOG_FUNC |
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46 } |
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47 |
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48 TInt CDirectChannel::AttachTransportSession(CUserPlaneTransportSession& aSession, TAvdtpTransportSessionType /*aType*/) |
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49 { |
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50 LOG_FUNC |
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51 __ASSERT_DEBUG(!iTransportSession, Panic(EAVDTPBadSessionAttachToTransportChannel)); |
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52 // don't care about session type for direct channels |
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53 iTransportSession = &aSession; |
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54 return KErrNone; |
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55 } |
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56 |
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57 TBool CDirectChannel::CouldAttachSession(const TAvdtpSockAddr& /*aAddr*/) |
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58 { |
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59 LOG_FUNC |
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60 // for this channel we can take iff no session |
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61 return (iTransportSession == NULL); |
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62 } |
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63 |
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64 TTCID CDirectChannel::TCID() const |
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65 { |
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66 LOG_FUNC |
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67 return KDirectChannelTCID; |
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68 } |
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69 |
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70 CServProviderBase* CDirectChannel::ObtainSAP() |
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71 { |
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72 CServProviderBase* sap = iLogicalChannel; |
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73 iLogicalChannel = NULL; |
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74 return sap; |
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75 } |
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76 |
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77 void CDirectChannel::TransportSessionBlocked(TAvdtpTransportSessionType /*aSession*/, TBool aBlocked) |
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78 { |
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79 LOG_FUNC |
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80 LOG1(_L("TransportSession blocked(%d"), aBlocked); |
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81 iTransportSessionBlocked = aBlocked; |
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82 } |
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83 |
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84 /** |
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85 Just pass down directly to logical channel |
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86 No marshalling of other sessions to do, and no framing so just go |
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87 but this is by invite only! should check for this (only debug) |
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88 */ |
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89 TUint CDirectChannel::SendPacket(TTSID /*aTSID*/, RMBufChain& aPacket) |
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90 { |
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91 LOG_FUNC |
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92 LOG1(_L("Packet length = %d bytes"), aPacket.Length()); |
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93 return iLogicalChannel ? iLogicalChannel->Write(aPacket,0) : 0; |
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94 } |
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95 |
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96 |
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97 // from logical channel |
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98 |
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99 /** |
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100 To reduce copying just forward indication on |
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101 Also this leaves the AV Sap or Session to work out what is best strategy to get data |
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102 */ |
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103 void CDirectChannel::NewData(TUint aCount) |
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104 { |
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105 LOG_FUNC |
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106 if (iTransportSession) |
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107 { |
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108 RMBufChain chain; |
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109 TInt err = KErrNone; |
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110 while (aCount--) |
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111 { |
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112 err = iLogicalChannel->GetData(chain,0,0); //returns negative error code or the number of datagrams ( = 1 ) |
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113 if (err > 0) |
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114 { |
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115 iTransportSession->NewData(chain); |
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116 } |
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117 } |
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118 } |
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119 } |
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120 |
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121 void CDirectChannel::CanSend() |
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122 /** |
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123 upcall from logical channel (l2cap) |
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124 */ |
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125 { |
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126 LOG_FUNC |
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127 iTransportSession->CanSend(); |
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128 } |
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129 |
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130 #ifdef _DEBUG |
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131 void CDirectChannel::DetachTransportSession(CUserPlaneTransportSession& aSession, TAvdtpTransportSessionType /*aType */) |
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132 #else |
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133 void CDirectChannel::DetachTransportSession(CUserPlaneTransportSession& /*aSession*/, TAvdtpTransportSessionType /*aType */) |
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134 #endif |
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135 { |
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136 LOG_FUNC |
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137 __ASSERT_DEBUG(&aSession == iTransportSession, Panic(EAVDTPBadSessionDetachFromTransportChannel)); |
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138 iTransportSession = NULL; |
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139 // closing logical channel is async - we die on CanClose |
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140 // but we're invalid, so tell protocol |
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141 Protocol().TransportChannelClosing(*this); |
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142 CloseLogicalChannel(); |
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143 } |
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144 |
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145 void CDirectChannel::Disconnect() |
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146 /** |
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147 upcall from logical channel (l2cap) |
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148 */ |
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149 { |
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150 LOG_FUNC |
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151 iLogicalChannel = NULL; |
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152 if (iTransportSession) |
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153 { |
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154 iTransportSession->ChannelError(KErrDisconnected); |
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155 } |
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156 } |
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157 |
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158 void CDirectChannel::Error(TInt aError, TUint /*aOperationMask*/) |
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159 /** |
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160 upcall from logical channel (l2cap) |
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161 */ |
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162 { |
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163 LOG_FUNC |
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164 if (iTransportSession) |
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165 { |
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166 iTransportSession->ChannelError(aError); |
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167 } |
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168 } |
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169 |
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170 |