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1 // Copyright (c) 2005-2009 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 // |
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15 |
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16 /** |
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17 @file |
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18 @internalTechnology |
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19 */ |
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20 |
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21 #include <bluetooth/logger.h> |
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22 #include "avctpreceiver.h" |
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23 #include "avctpcommon.h" |
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24 #include "avctpbody.h" |
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25 #include "avctpPriorities.h" |
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26 #include "avctpserviceutils.h" |
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27 |
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28 #ifdef __FLOG_ACTIVE |
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29 _LIT8(KLogComponent, LOG_COMPONENT_AVCTP_SERVICES); |
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30 #endif |
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31 |
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32 using namespace SymbianAvctp; |
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33 |
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34 /** |
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35 two-phase constructor |
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36 @param aAvctpBody The class that provides access to the AVCTP client |
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37 @leave systemwide reason |
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38 @return pointer to newly created object |
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39 @internalTechnology |
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40 */ |
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41 CAvctpReceiver* CAvctpReceiver::NewL(MAvctpEventNotify& aNotify, RSocket& aAvctpSocket, TPid aPid) |
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42 { |
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43 LOG_STATIC_FUNC |
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44 |
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45 CAvctpReceiver* self = CAvctpReceiver::NewLC(aNotify, aAvctpSocket, aPid); |
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46 CleanupStack::Pop(self); |
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47 return self; |
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48 } |
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49 |
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50 /** |
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51 two-phase constructor, leaves object on cleanupstack |
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52 @param aAvctpBody The class that provides access to the AVCTP client |
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53 @leave systemwide reason |
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54 @return pointer to newly created object |
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55 @internalTechnology |
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56 */ |
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57 CAvctpReceiver* CAvctpReceiver::NewLC(MAvctpEventNotify& aNotify, RSocket& aAvctpSocket, TPid aPid) |
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58 { |
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59 LOG_STATIC_FUNC |
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60 |
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61 CAvctpReceiver* self = new(ELeave) CAvctpReceiver(aNotify, aAvctpSocket, aPid); |
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62 CleanupStack::PushL(self); |
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63 self->ConstructL(); |
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64 return self; |
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65 } |
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66 |
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67 /** |
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68 c'tor |
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69 */ |
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70 CAvctpReceiver::CAvctpReceiver(MAvctpEventNotify& aNotify, RSocket& aAvctpSocket, TPid aPid) : |
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71 CActive(KDataPlanePriority), |
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72 iNotify(aNotify), |
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73 iAvctpSocket(aAvctpSocket), |
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74 iRecvState(EWaitingForPktHeader), |
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75 iRecvPtr(NULL, 0), |
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76 iPid(aPid) |
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77 { |
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78 LOG_FUNC |
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79 } |
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80 |
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81 void CAvctpReceiver::ConstructL() |
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82 { |
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83 LOG_FUNC |
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84 iRecvBuf = HBufC8::NewMaxL(ENormalHeaderLength); |
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85 iRecvBuf->Des().SetMax(); |
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86 CActiveScheduler::Add(this); |
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87 ReceiveL(EWaitingForPktHeader); |
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88 } |
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89 |
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90 /** |
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91 d'tor |
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92 */ |
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93 CAvctpReceiver::~CAvctpReceiver() |
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94 { |
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95 LOG_FUNC |
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96 |
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97 Cancel(); |
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98 delete iRecvBuf; |
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99 } |
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100 |
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101 inline void CAvctpReceiver::NotifyMessageReceived(const TBTDevAddr& aBTDevice, |
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102 SymbianAvctp::TTransactionLabel aTransactionLabel, |
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103 SymbianAvctp::TMessageType aType, |
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104 TBool aIpidBitSet, |
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105 const TDesC8& aMessageInformation) |
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106 { |
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107 LOG_FUNC |
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108 __ASSERT_BTADDR(aBTDevice); |
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109 SymbianAvctp::AssertValidTransactionLabel(aTransactionLabel); |
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110 __ASSERT_DEBUG(aType == SymbianAvctp::ECommand || aType == SymbianAvctp::EResponse, Panic(::EAvctpInvalidMessageType)); |
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111 |
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112 iNotify.MaenMessageReceivedIndicate(aBTDevice, aTransactionLabel, aType, aIpidBitSet, aMessageInformation); |
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113 } |
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114 |
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115 // |
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116 // Function that issues RecvFrom |
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117 |
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118 /** |
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119 Requests data from the Avctp Sap |
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120 When the async Recv completes, iXfrLength will contain the remaining amount of data |
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121 in the same packet that we've not yet got. |
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122 */ |
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123 void CAvctpReceiver::ReceiveL(TRecvState aNextState, TInt aBufLen) |
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124 { |
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125 LOG_FUNC |
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126 //Make sure iRecvBuf isn't NULL before using it |
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127 if((!iRecvBuf) || (iRecvBuf->Des().MaxLength() < aBufLen)) |
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128 { |
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129 // Don't ReAlloc cause that copies across the old data which we don't want |
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130 delete iRecvBuf; // free previous data |
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131 iRecvBuf = NULL; |
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132 iRecvBuf = HBufC8::NewMaxL(aBufLen); |
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133 iRecvBuf->Des().SetMax(); |
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134 } |
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135 iRecvPtr.Set(iRecvBuf->Des().MidTPtr(0, aBufLen)); |
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136 iAvctpSocket.RecvFrom(iRecvPtr, iAddr, KSockReadContinuation, iStatus, iXfrLength); |
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137 ChangeState(aNextState); |
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138 } |
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139 |
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140 // |
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141 // Functions From CActive |
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142 |
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143 void CAvctpReceiver::DoCancel() |
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144 { |
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145 LOG_FUNC |
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146 |
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147 iAvctpSocket.CancelRecv(); |
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148 } |
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149 |
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150 void CAvctpReceiver::RunL() |
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151 { |
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152 LOG_FUNC |
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153 LOG1(_L("iStatus.Int(): %d"), iStatus.Int()) |
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154 |
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155 if (iStatus.Int() == KErrNone) |
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156 { |
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157 switch (iRecvState) |
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158 { |
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159 case EWaitingForPktHeader: |
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160 SetPacketInfo(iRecvPtr); |
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161 if (iXfrLength()) |
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162 { |
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163 ReceiveL(EWaitingForMsgInfo, iXfrLength()); |
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164 } |
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165 else // there was no message data |
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166 { |
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167 NotifyMessageReceived(TAvctpSockAddr::Cast(iAddr).BTAddr(), |
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168 iTransactionLabel, |
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169 iMessageType, |
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170 iIpidBitSet, |
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171 KNullDesC8); |
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172 ReceiveL(EWaitingForPktHeader); |
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173 } |
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174 break; |
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175 |
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176 case EWaitingForMsgInfo: |
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177 NotifyMessageReceived(TAvctpSockAddr::Cast(iAddr).BTAddr(), |
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178 iTransactionLabel, |
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179 iMessageType, |
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180 iIpidBitSet, |
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181 iRecvPtr); |
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182 ReceiveL(EWaitingForPktHeader); |
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183 break; |
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184 |
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185 default: |
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186 __ASSERT_ALWAYS(NULL, Panic(EAvctpUnrecognisedState)); |
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187 break; |
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188 } |
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189 } |
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190 else if (iStatus.Int() != KErrCancel) |
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191 { |
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192 iNotify.MaenErrorNotify(TAvctpSockAddr::Cast(iAddr).BTAddr(), iStatus.Int()); |
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193 } |
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194 // else ignore the KErrCancel since the cancelled request wasn't directly asked for by the client of RAvctp |
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195 } |
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196 |
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197 TInt CAvctpReceiver::RunError(TInt aError) |
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198 { |
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199 LOG_FUNC |
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200 |
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201 iNotify.MaenErrorNotify(TAvctpSockAddr::Cast(iAddr).BTAddr(), aError); |
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202 return KErrNone; |
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203 } |
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204 |
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205 // |
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206 // Other Functions |
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207 |
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208 void CAvctpReceiver::ChangeState(TRecvState aNextState) |
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209 { |
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210 LOG_FUNC |
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211 LOG2(_L("current State: %d, aNextState: %d"), iRecvState, aNextState) |
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212 |
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213 __ASSERT_DEBUG((iRecvState == EWaitingForPktHeader && aNextState == EWaitingForMsgInfo) || |
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214 (iRecvState == EWaitingForPktHeader && aNextState == EWaitingForPktHeader) || |
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215 (iRecvState == EWaitingForMsgInfo && aNextState == EWaitingForPktHeader), |
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216 Panic(EAvctpRecvBadStateTransition)); |
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217 __ASSERT_ALWAYS(!IsActive(), Panic(EAvctpRecvBadStateTransition)); |
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218 iRecvState = aNextState; |
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219 SetActive(); |
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220 } |
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221 |
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222 void CAvctpReceiver::SetPacketInfo(TDes8& aHeader) |
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223 { |
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224 LOG_FUNC |
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225 |
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226 __ASSERT_DEBUG(Pid(aHeader) == iPid, Panic(EAvctpIncorrectPid)); |
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227 __ASSERT_DEBUG(PacketType(aHeader) == ENormalPkt, Panic(EAvctpPacketTypeNotNormal)); |
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228 |
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229 iTransactionLabel = TransactionLabel(aHeader); |
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230 iMessageType = MessageType(aHeader); |
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231 iIpidBitSet = !IsValidPid(aHeader); |
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232 |
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233 __DEBUG_ONLY |
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234 ( |
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235 TBuf<KBTAddressLength> address; |
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236 TAvctpSockAddr::Cast(iAddr).BTAddr().GetReadable(address); |
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237 ) |
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238 |
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239 LOG1(_L("BT Device 0x%S"), &address); |
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240 |
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241 LOG3(_L("iTransactionLabel: %d, iMessageType: %d, iIpidBitSet: %d"), iTransactionLabel, iMessageType, iIpidBitSet) |
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242 } |
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243 |
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244 // EOF |
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245 |