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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 stream statemachine |
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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 |
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23 #include <bluetooth/logger.h> |
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24 #include "avdtpStream.h" |
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25 #include "avdtp.h" |
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26 #include "avdtpSignallingChannel.h" |
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27 #include "avdtpSignallingSession.h" |
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28 |
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29 #ifdef __FLOG_ACTIVE |
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30 _LIT8(KLogComponent, LOG_COMPONENT_AVDTP); |
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31 #endif |
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32 |
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33 #ifdef _DEBUG |
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34 #define DEBUGPANICINSTATE(aPanic) PanicInState(aPanic) |
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35 #else |
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36 #define DEBUGPANICINSTATE(aPanic) |
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37 #endif |
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38 |
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39 // state ctors |
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40 |
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41 TAVStreamState::TAVStreamState(CAVStreamStateFactory& aFactory) |
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42 : iFactory(aFactory) |
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43 { |
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44 STATENAME("BASE"); |
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45 } |
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46 |
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47 TAVStreamStateIdle::TAVStreamStateIdle(CAVStreamStateFactory& aFactory) |
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48 : TAVStreamState(aFactory) |
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49 { |
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50 STATENAME("Idle"); |
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51 } |
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52 |
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53 TAVStreamStateOpen::TAVStreamStateOpen(CAVStreamStateFactory& aFactory) |
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54 : TAVStreamStateIdle(aFactory) |
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55 { |
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56 STATENAME("Open"); |
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57 } |
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58 |
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59 TAVStreamStateReady::TAVStreamStateReady(CAVStreamStateFactory& aFactory) |
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60 : TAVStreamStateOpen(aFactory) |
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61 { |
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62 STATENAME("Ready"); |
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63 } |
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64 |
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65 TAVStreamStateWaitForSessions::TAVStreamStateWaitForSessions(CAVStreamStateFactory& aFactory) |
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66 : TAVStreamStateIdle(aFactory) |
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67 { |
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68 STATENAME("WaitForSessions"); |
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69 } |
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70 |
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71 TAVStreamStateWaitForSessionsStartReceived::TAVStreamStateWaitForSessionsStartReceived(CAVStreamStateFactory& aFactory) |
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72 : TAVStreamStateWaitForSessions(aFactory) |
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73 { |
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74 STATENAME("WaitForSessionsStartReceived"); |
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75 } |
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76 |
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77 TAVStreamStateConfiguring::TAVStreamStateConfiguring(CAVStreamStateFactory& aFactory) |
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78 : TAVStreamStateIdle(aFactory) |
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79 { |
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80 STATENAME("Configuring"); |
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81 } |
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82 |
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83 TAVStreamStateConfigured::TAVStreamStateConfigured(CAVStreamStateFactory& aFactory) |
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84 : TAVStreamStateIdle(aFactory) |
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85 { |
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86 STATENAME("**Abstract** Configure"); |
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87 } |
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88 |
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89 TAVStreamStateINTConfigured::TAVStreamStateINTConfigured(CAVStreamStateFactory& aFactory) |
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90 : TAVStreamStateConfigured(aFactory) |
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91 { |
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92 STATENAME("INTConfigured"); |
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93 } |
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94 |
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95 TAVStreamStateACPConfigured::TAVStreamStateACPConfigured(CAVStreamStateFactory& aFactory) |
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96 : TAVStreamStateConfigured(aFactory) |
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97 { |
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98 STATENAME("ACPConfigured"); |
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99 } |
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100 |
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101 TAVStreamStateOpening::TAVStreamStateOpening(CAVStreamStateFactory& aFactory) |
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102 : TAVStreamStateIdle(aFactory) |
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103 { |
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104 STATENAME("Opening"); |
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105 } |
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106 |
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107 TAVStreamStateCreatingLogicalChannels::TAVStreamStateCreatingLogicalChannels(CAVStreamStateFactory& aFactory) |
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108 : TAVStreamStateOpen(aFactory) |
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109 { |
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110 STATENAME("CreatingLogicalChannels"); |
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111 } |
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112 |
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113 TAVStreamStateReleasing::TAVStreamStateReleasing(CAVStreamStateFactory& aFactory) |
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114 : TAVStreamStateReady(aFactory) |
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115 { |
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116 STATENAME("Releasing"); |
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117 } |
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118 |
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119 TAVStreamStateAborting::TAVStreamStateAborting(CAVStreamStateFactory& aFactory) |
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120 : TAVStreamStateReady(aFactory) |
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121 { |
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122 STATENAME("Aborting"); |
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123 } |
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124 |
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125 TAVStreamStateStreaming::TAVStreamStateStreaming(CAVStreamStateFactory& aFactory) |
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126 : TAVStreamStateReady(aFactory) |
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127 { |
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128 STATENAME("Streaming"); |
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129 } |
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130 |
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131 TAVStreamStateStarting::TAVStreamStateStarting(CAVStreamStateFactory& aFactory) |
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132 : TAVStreamStateReady(aFactory) |
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133 { |
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134 STATENAME("Starting"); |
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135 } |
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136 |
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137 TAVStreamStateSuspending::TAVStreamStateSuspending(CAVStreamStateFactory& aFactory) |
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138 : TAVStreamStateReady(aFactory) |
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139 { |
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140 STATENAME("Suspending"); |
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141 } |
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142 |
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143 TAVStreamStateWaitingForLogicalChannels::TAVStreamStateWaitingForLogicalChannels(CAVStreamStateFactory& aFactory) |
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144 : TAVStreamStateOpen(aFactory) |
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145 { |
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146 STATENAME("WaitingForLogicalChannels"); |
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147 } |
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148 |
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149 TAVStreamStateReconfiguring::TAVStreamStateReconfiguring(CAVStreamStateFactory& aFactory) |
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150 : TAVStreamStateReady(aFactory) |
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151 { |
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152 STATENAME("Reconfiguring"); |
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153 } |
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154 |
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155 |
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156 // default state actions |
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157 |
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158 void TAVStreamState::Enter(CAVStream& /*aStream*/) const |
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159 { |
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160 LOG_FUNC |
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161 // do nothing by default |
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162 } |
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163 |
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164 void TAVStreamState::Exit(CAVStream& /*aStream*/) const |
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165 { |
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166 LOG_FUNC |
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167 // do nothing by default |
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168 } |
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169 |
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170 void TAVStreamState::Release(CAVStream& aStream) const |
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171 { |
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172 LOG_FUNC |
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173 // it already has been Released |
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174 aStream.Released(); |
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175 } |
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176 |
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177 void TAVStreamState::AwaitLogicalChannelsL(CAVStream& /*aStream*/) const |
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178 { |
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179 LOG_FUNC |
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180 DEBUGPANICINSTATE(EAvdtpUnexpectedAwaitLogicalChannelsEvent); |
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181 } |
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182 |
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183 void TAVStreamState::LogicalChannelsAvailable(CAVStream& /*aStream*/, TLogicalChannelFactoryTicket /*aTicket*/, TInt /*aError*/) const |
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184 { |
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185 LOG_FUNC |
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186 DEBUGPANICINSTATE(EAvdtpUnexpectedLogicalChannelsAvailableEvent); |
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187 } |
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188 |
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189 void TAVStreamState::WatchdogFired(CAVStream& /*aStream*/) const |
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190 { |
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191 LOG_FUNC |
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192 DEBUGPANICINSTATE(EAvdtpUnexpectedWatchdogFiredEvent); |
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193 } |
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194 |
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195 void TAVStreamState::Configured(CAVStream& /*aStream*/) const |
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196 { |
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197 LOG_FUNC |
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198 DEBUGPANICINSTATE(EAvdtpUnexpectedConfiguredEvent); |
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199 } |
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200 |
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201 void TAVStreamState::SetConfigurationL(CAVStream& /*aStream*/, |
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202 RBuf8& /*aPacketBuffer*/, CSignallingChannel& /*aSignallingChannel*/, |
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203 TBool /*aReportingConfigured*/, |
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204 TBool /*aRecoveryConfigured*/) const |
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205 { |
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206 LOG_FUNC |
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207 DEBUGPANICINSTATE(EAvdtpUnexpectedSetConfigurationEvent); |
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208 User::Leave(KErrNotReady); |
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209 } |
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210 |
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211 void TAVStreamState::SetConfigConfirm(CAVStream& /*aStream*/, TInt /*aResult*/, |
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212 TSEID /*aRemoteSEID*/, TAvdtpServiceCategory /*aFailedCategory*/) const |
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213 { |
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214 // throw away |
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215 } |
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216 |
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217 void TAVStreamState::ReconfigConfirm(CAVStream& /*aStream*/, TInt /*aResult*/, |
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218 TSEID /*aRemoteSEID*/, TAvdtpServiceCategory /*aFailedCategory*/) const |
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219 { |
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220 LOG_FUNC |
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221 // throw away |
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222 } |
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223 |
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224 void TAVStreamState::StartConfirm(CAVStream& /*aStream*/, TInt /*aResult*/, TSEID /*aSEID*/) const |
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225 { |
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226 LOG_FUNC |
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227 // throw away |
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228 } |
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229 |
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230 void TAVStreamState::AbortConfirm(CAVStream& /*aStream*/, TSEID /*aSEID*/) const |
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231 { |
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232 LOG_FUNC |
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233 // throw away |
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234 } |
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235 |
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236 void TAVStreamState::OpenConfirm(CAVStream& /*aStream*/, TInt /*aResult*/, TSEID /*aSEID*/) const |
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237 { |
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238 LOG_FUNC |
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239 // default, throw away weirdo response from remote |
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240 } |
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241 |
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242 void TAVStreamState::ReleaseConfirm(CAVStream& /*aStream*/, TInt /*aResult*/, TSEID /*aSEID*/) const |
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243 { |
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244 LOG_FUNC |
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245 // throw away |
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246 } |
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247 |
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248 void TAVStreamState::SuspendConfirm(CAVStream& /*aStream*/, TInt /*aResult*/, TSEID /*aSEID*/) const |
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249 { |
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250 LOG_FUNC |
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251 // throw away |
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252 } |
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253 |
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254 TInt TAVStreamState::AddSession(CAVStream& /*aStream*/, |
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255 TAvdtpTransportSessionType /*aType*/, |
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256 CUserPlaneTransportSession& /*aSession*/, |
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257 CTransportChannel*& /*aTransportChannel*/) const |
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258 { |
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259 LOG_FUNC |
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260 DEBUGPANICINSTATE(EAvdtpUnexpectedAddSessionEvent); |
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261 return KErrNotReady; |
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262 } |
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263 |
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264 void TAVStreamState::DropSession(CAVStream& /*aStream*/, TAvdtpTransportSessionType /*aType*/, |
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265 CUserPlaneTransportSession& /*aSession*/) const |
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266 { |
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267 LOG_FUNC |
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268 DEBUGPANICINSTATE(EAvdtpUnexpectedDropSession); |
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269 } |
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270 |
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271 TInt TAVStreamState::StartReceived(CAVStream& /*aStream*/) const |
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272 { |
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273 LOG_FUNC |
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274 return KErrNotReady; |
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275 } |
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276 |
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277 TBool TAVStreamState::IsStreaming(const CAVStream& /*aStream*/) const |
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278 { |
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279 LOG_FUNC |
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280 return EFalse; |
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281 } |
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282 |
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283 TInt TAVStreamState::Start(CAVStream& /*aStream*/) const |
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284 { |
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285 LOG_FUNC |
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286 return KErrNotReady; |
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287 } |
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288 |
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289 TInt TAVStreamState::Suspend(CAVStream& /*aStream*/) const |
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290 { |
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291 LOG_FUNC |
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292 return KErrNotReady; |
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293 } |
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294 |
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295 void TAVStreamState::Started(CAVStream& /*aStream*/) const |
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296 { |
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297 LOG_FUNC |
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298 // signalling session should have sanity checked with previous StartReceived() |
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299 DEBUGPANICINSTATE(EAvdtpUnexpectedStartedEvent); |
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300 } |
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301 |
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302 void TAVStreamState::Suspended(CAVStream& /*aStream*/) const |
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303 { |
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304 LOG_FUNC |
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305 // signalling session should have sanity checked with previous IsStreaming |
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306 DEBUGPANICINSTATE(EAvdtpUnexpectedSuspendedEvent); |
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307 } |
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308 |
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309 void TAVStreamState::ChangeState(CAVStream& aContext, CAVStreamStateFactory::TAVStreamStates aState) const |
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310 { |
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311 LOG_FUNC |
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312 aContext.iState->Exit(aContext); |
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313 |
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314 #ifdef __FLOG_ACTIVE |
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315 const TAVStreamState* const newState=&iFactory.GetState(aState); |
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316 LOG2(_L("Stream: State %S -> %S"), &aContext.iState->iName, &newState->iName); |
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317 #endif //__FLOG_ACTIVE |
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318 |
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319 aContext.iState=&iFactory.GetState(aState); |
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320 aContext.iState->Enter(aContext); |
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321 } |
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322 |
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323 void TAVStreamState::PanicInState(TAvdtpPanic aPanic) const |
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324 { |
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325 Panic(aPanic, iFactory.StateIndex(this)); |
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326 } |
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327 |
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328 |
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329 // derived states and state changes |
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330 |
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331 void TAVStreamStateIdle::Configured(CAVStream& aStream) const |
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332 { |
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333 // ah - going ACP |
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334 ChangeState(aStream, CAVStreamStateFactory::EStreamStateACPConfigured); |
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335 } |
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336 |
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337 void TAVStreamStateIdle::SetConfigurationL(CAVStream& aStream, |
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338 RBuf8& aPacketBuffer, |
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339 CSignallingChannel& aSignallingChannel, |
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340 TBool aReportingConfigured, |
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341 TBool aRecoveryConfigured) const |
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342 { |
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343 LOG_FUNC |
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344 // An INT procedure to add in extra options the stack wishes to do, regardless of client |
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345 // At present this is limited to mux&frag - which we do if local and remote have |
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346 // the *capability* to do so, even if the proposed *configuration* doesnt mention it |
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347 |
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348 // AVDTP is daft, so have to arrange for IDs before objects exist if muxing used |
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349 |
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350 // we also need to base this on the number of sessions we know we're going to run |
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351 // see 8.19.8 |
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352 // 5.4.6 allow fors no reporting session so it's not *obvious* when the 2nd element is |
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353 // bit like not obvious what the 2nd L2cap channel will bear |
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354 |
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355 // further, if we're muxing, we need to see what optional sessions are proposed |
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356 // in the configuration to see what to configure in the mux capability |
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357 |
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358 TBool canMux; |
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359 TBool canFrag; |
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360 aStream.CanMuxFrag(canMux, canFrag); |
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361 |
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362 TInt err = KErrNone; |
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363 |
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364 if (canMux) |
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365 { |
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366 // muxing is awkward - must identify the TCs and TSs that are going to be used NOW |
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367 TAvdtpMultiplexingCapability* mux = aStream.CreateMuxCapabilityL(aReportingConfigured, aRecoveryConfigured, aSignallingChannel); |
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368 |
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369 // ok to create packetstructure - only exchange IDs if do mux |
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370 err = mux->AsProtocol(aPacketBuffer); |
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371 } |
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372 |
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373 if (!err) |
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374 { |
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375 // First check that we are in a state to send a set configuration command as |
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376 // we don't want to send one unless we can commit the pending configuration |
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377 err = aStream.iLocalSEP->CheckConfigurationState(EFalse); |
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378 |
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379 if (!err) |
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380 { |
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381 err = aSignallingChannel.SendSetConfiguration(aStream, |
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382 aStream.LocalSEID(), aStream.RemoteSEID(), aPacketBuffer); |
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383 if (!err) |
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384 { |
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385 // tell SEP |
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386 err = aStream.iLocalSEP->SetPendingConfiguration(aPacketBuffer, EFalse); //takes ownership of RBuf |
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387 |
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388 // we should not get an error here as we called CheckConfigurationState above |
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389 __ASSERT_DEBUG(!err, PanicInState(EAvdtpInconsistentPendingConfigurationState)); |
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390 |
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391 if (!err) |
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392 { |
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393 aPacketBuffer.Assign(NULL); // since ownership transfer succeeded |
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394 ChangeState(aStream, CAVStreamStateFactory::EStreamStateConfiguring); |
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395 } |
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396 } |
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397 } |
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398 } |
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399 |
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400 if (err) |
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401 { |
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402 // clean up and don't bother proceeding |
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403 aStream.DeallocateUnclaimedTransportSessionIDs(); |
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404 User::Leave(err); |
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405 } |
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406 } |
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407 |
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408 void TAVStreamStateIdle::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
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409 { |
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410 LOG_FUNC |
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411 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
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412 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
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413 } |
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414 |
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415 |
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416 void TAVStreamStateConfiguring::SetConfigConfirm(CAVStream& aStream, TInt aResult, |
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417 TSEID /*aRemoteSEID*/, TAvdtpServiceCategory aFailedCategory) const |
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418 { |
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419 LOG_FUNC |
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420 //update our state before telling others |
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421 TRAPD(res, aStream.iLocalSEP->CommitPendingConfigurationL(aResult==KErrNone, EFalse)); |
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422 |
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423 if (res!=KErrNone) |
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424 { |
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425 aResult = res; |
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426 } |
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427 |
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428 if (aResult==KErrNone) |
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429 { |
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430 TBool rp = aStream.CheckConfigured(EServiceCategoryReporting); |
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431 TBool rc = aStream.CheckConfigured(EServiceCategoryRecovery); |
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432 aStream.iNumSessionsRequired = AvdtpInternalUtils::NumberOfTransportObjects(rp, rc); |
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433 ChangeState(aStream, CAVStreamStateFactory::EStreamStateINTConfigured); |
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434 } |
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435 |
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436 aStream.iStreamNotify.StreamConfigured(aStream.LocalSEID(), aResult, aFailedCategory); |
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437 |
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438 if (aResult!=KErrNone) |
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439 { |
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440 // remove the stream as the configure failed the stream is invalid |
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441 aStream.Released(); // deletes stream |
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442 } |
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443 } |
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444 |
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445 void TAVStreamStateConfiguring::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
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446 { |
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447 LOG_FUNC |
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448 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
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449 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
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450 } |
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451 |
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452 void TAVStreamStateConfigured::Release(CAVStream& aStream) const |
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453 { |
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454 // in this state to Release a stream object (cos it errored say) |
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455 // needs us to send an Abort rather than a Close to remote |
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456 // this is because the remote will need to mark its SEP as not in use, |
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457 // but we haven't yet sent an Open. |
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458 LOG_FUNC |
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459 CSignallingChannel* sigch = aStream.iProtocol.FindSignallingChannel(aStream.iRemoteAddress.BTAddr()); |
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460 |
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461 if (sigch) |
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462 { |
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463 TInt err = sigch->SendAbort(aStream, aStream.RemoteSEID()); |
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464 if (err==KErrNone) |
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465 { |
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466 ChangeState(aStream, CAVStreamStateFactory::EStreamStateAborting); |
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467 } |
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468 else |
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469 { |
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470 // just have to die |
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471 aStream.Released(); |
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472 } |
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473 } |
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474 } |
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475 |
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476 void TAVStreamStateConfigured::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
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477 { |
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478 LOG_FUNC |
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479 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
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480 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
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481 } |
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482 |
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483 /** |
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484 An INT primitive |
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485 A session is adding itself to the stream. |
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486 Record its details and find a channel for it to use. |
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487 Record the binding between session and channel. |
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488 Once all the required sessions are added the stream tries to open the remote |
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489 */ |
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490 TInt TAVStreamStateINTConfigured::AddSession(CAVStream& aStream, |
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491 TAvdtpTransportSessionType aType, |
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492 CUserPlaneTransportSession& aSession, |
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493 CTransportChannel*& aChannel) const |
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494 { |
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495 LOG_FUNC |
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496 TInt ret = KErrNone; |
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497 // check GAVDP isn't being naughty and asking for an unconfigured session |
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498 if ((aType==EReporting && !aStream.CheckConfigured(EServiceCategoryReporting)) |
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499 || (aType==ERecovery && !aStream.CheckConfigured(EServiceCategoryRecovery))) |
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500 { |
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501 // gavdp is trying to use a session it has never configured |
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502 ret = KErrNotSupported; |
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503 } |
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504 |
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505 if (ret == KErrNone) |
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506 { |
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507 TBool useMux; |
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508 TBool useFrag; //ignored |
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509 aStream.CanMuxFrag(useMux, useFrag); |
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510 |
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511 aChannel = aStream.iProtocol.GetTransportChannel(aStream.iRemoteAddress, useMux); |
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512 |
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513 if (aChannel) |
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514 { |
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515 // bind session to channel |
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516 ret = aChannel->AttachTransportSession(aSession, aType); |
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517 if (ret==KErrNone) |
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518 { |
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519 // keep a copy of this binding |
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520 TTransportBinding binding; |
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521 binding.iSession = &aSession; |
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522 binding.iChannel = aChannel; |
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523 |
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524 // keep object bindings |
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525 TTransportBinding* b = NULL; |
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526 |
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527 switch (aType) |
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528 { |
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529 case EMedia: |
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530 b = &aStream.iMediaBinding; |
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531 break; |
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532 case EReporting: |
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533 b = &aStream.iReportingBinding; |
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534 break; |
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535 case ERecovery: |
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536 b = &aStream.iRecoveryBinding; |
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537 break; |
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538 } |
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539 |
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540 __ASSERT_DEBUG(b, PanicInState(EAvdtpBadSessionAttachingToStream)); |
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541 // remember binding |
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542 *b = binding; |
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543 } |
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544 TryToOpen(aStream); |
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545 } |
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546 else |
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547 { |
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548 ret = KErrNotReady; // TC went down... |
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549 } |
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550 } |
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551 return ret; |
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552 } |
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553 |
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554 /** |
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555 One of the sessions in the stream is dropping from the stream. |
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556 At this point the stream hadn't been opened, so don't Release stream |
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557 Just cancel oustanding logical channel factory request |
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558 */ |
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559 void TAVStreamStateINTConfigured::DropSession(CAVStream& aStream, TAvdtpTransportSessionType /*aType*/, CUserPlaneTransportSession& /*aSession*/) const |
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560 { |
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561 LOG_FUNC |
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562 aStream.iProtocol.LogicalChannelFactory().Cancel(aStream.iFactoryJob); |
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563 } |
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564 |
|
565 void TAVStreamStateINTConfigured::TryToOpen(CAVStream& aStream) const |
|
566 { |
|
567 LOG_FUNC |
|
568 // check how many sessions we think we need |
|
569 // if all have added to us then we find signalling ch and issue an open |
|
570 |
|
571 TInt numSessionsBound = (aStream.iMediaBinding.iSession ?1:0) + |
|
572 (aStream.iReportingBinding.iSession ?1:0) + |
|
573 (aStream.iRecoveryBinding.iSession ?1:0); |
|
574 |
|
575 |
|
576 __ASSERT_DEBUG(numSessionsBound>=1 && numSessionsBound<=3, PanicInState(EAVDTPBadSessionCount)); |
|
577 if (numSessionsBound == aStream.iNumSessionsRequired) |
|
578 { |
|
579 // GO! |
|
580 CSignallingChannel* sigch = aStream.iProtocol.FindSignallingChannel(aStream.DeviceAddress()); |
|
581 TInt err = sigch ? sigch->SendOpenStream(aStream, aStream.RemoteSEID()) : KErrNotReady; |
|
582 if (err==KErrNone) |
|
583 { |
|
584 // all sessions joined - so Open |
|
585 ChangeState(aStream, CAVStreamStateFactory::EStreamStateOpening); |
|
586 } |
|
587 else |
|
588 { |
|
589 aStream.NotifyUserPlaneTransportSessionsError(NULL, err); |
|
590 // no need to release stream - leave gavdp client to decide |
|
591 } |
|
592 } |
|
593 } |
|
594 |
|
595 void TAVStreamStateINTConfigured::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
596 { |
|
597 LOG_FUNC |
|
598 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
599 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
600 } |
|
601 |
|
602 void TAVStreamStateINTConfigured::SetConfigurationL(CAVStream& /*aStream*/, |
|
603 RBuf8& /*aPacketBuffer*/, |
|
604 CSignallingChannel& /*aSignallingChannel*/, |
|
605 TBool /*aReportingConfigured*/, |
|
606 TBool /*aRecoveryConfigured*/) const |
|
607 { |
|
608 // GAVDP spec v1.1 sect4.1.5 forbids this - must be at OPEN state before reconfiguring |
|
609 // in our implementation this means we need to be in Ready state (thus have transport channels) |
|
610 // yes it is weird... |
|
611 User::Leave(KErrAvdtpInvalidStateForReconfigure); |
|
612 } |
|
613 |
|
614 /** |
|
615 ACP configured, now need to await the Open |
|
616 */ |
|
617 |
|
618 void TAVStreamStateACPConfigured::AwaitLogicalChannelsL(CAVStream& aStream) const |
|
619 { |
|
620 LOG_FUNC |
|
621 const TBool requireReporting = aStream.CheckConfigured(EServiceCategoryReporting); |
|
622 const TBool requireRecovery = aStream.CheckConfigured(EServiceCategoryRecovery); |
|
623 |
|
624 TAvdtpMultiplexingCapability* const muxCap = static_cast<TAvdtpMultiplexingCapability*> |
|
625 (aStream.iLocalSEP->Configuration()[EServiceCategoryMultiplexing]); |
|
626 |
|
627 if (muxCap) |
|
628 { |
|
629 TAvdtpMultiplexingCapabilityHelper helper(*muxCap, requireReporting, requireRecovery); |
|
630 DoAwaitMuxedChannelsL(aStream, helper, requireReporting, requireRecovery); |
|
631 } |
|
632 else |
|
633 { |
|
634 DoAwaitDirectChannelsL(aStream, requireReporting, requireRecovery); |
|
635 } |
|
636 } |
|
637 |
|
638 |
|
639 void TAVStreamStateACPConfigured::DoAwaitMuxedChannelsL(CAVStream& aStream, |
|
640 TAvdtpMultiplexingCapabilityHelper& aHelper, |
|
641 TBool aRequireReporting, |
|
642 TBool aRequireRecovery) const |
|
643 { |
|
644 LOG_FUNC |
|
645 TInt numExtraLogicalChannelsNeeded=0; |
|
646 TAvdtpSockAddr address = aStream.iRemoteAddress; |
|
647 // get TCIDs for the sessions in the mux record |
|
648 // this will indicate the TCIDs that the INT has proposed |
|
649 |
|
650 // we look for mux channels with any TCIDs proposed |
|
651 // and reduce thus reduce the number of TCs we expect |
|
652 CTransportChannel** tcPtr = &aStream.iMediaBinding.iChannel; |
|
653 |
|
654 *tcPtr = aStream.iProtocol.FindMuxChannel(aHelper.MediaCID()); |
|
655 if (!*tcPtr) |
|
656 { |
|
657 address.SetSession(EMedia); |
|
658 *tcPtr = aStream.iProtocol.GetTransportChannel(address, ETrue, aHelper.MediaCID()); |
|
659 User::LeaveIfNull(*tcPtr); |
|
660 numExtraLogicalChannelsNeeded++; |
|
661 } |
|
662 |
|
663 tcPtr = &aStream.iReportingBinding.iChannel; |
|
664 if (aRequireReporting) |
|
665 { |
|
666 __ASSERT_DEBUG(aHelper.ReportingCID() != KInvalidTCID, PanicInState(EAVDTPBadMuxConfiguration)); |
|
667 *tcPtr = aStream.iProtocol.FindMuxChannel(aHelper.ReportingCID()); |
|
668 if (!*tcPtr) |
|
669 { |
|
670 // might need a new channel |
|
671 if (aHelper.ReportingCID()!=aHelper.MediaCID()) |
|
672 { |
|
673 address.SetSession(EReporting); |
|
674 *tcPtr = aStream.iProtocol.GetTransportChannel(address, ETrue, aHelper.ReportingCID()); |
|
675 User::LeaveIfNull(*tcPtr); |
|
676 numExtraLogicalChannelsNeeded++; |
|
677 } |
|
678 // else remote has proposed putting reporting in same channel as media |
|
679 } |
|
680 } |
|
681 |
|
682 tcPtr = &aStream.iRecoveryBinding.iChannel; |
|
683 if (aRequireRecovery) |
|
684 { |
|
685 __ASSERT_DEBUG(aHelper.RecoveryCID() != KInvalidTCID, PanicInState(EAVDTPBadMuxConfiguration)); |
|
686 *tcPtr = aStream.iProtocol.FindMuxChannel(aHelper.RecoveryCID()); |
|
687 if (!*tcPtr) |
|
688 { |
|
689 // might need a new channel |
|
690 if (aHelper.RecoveryCID()!=aHelper.MediaCID() && aHelper.RecoveryCID()!=aHelper.ReportingCID()) |
|
691 { |
|
692 address.SetSession(ERecovery); |
|
693 *tcPtr = aStream.iProtocol.GetTransportChannel(address, ETrue, aHelper.RecoveryCID()); |
|
694 User::LeaveIfNull(*tcPtr); |
|
695 numExtraLogicalChannelsNeeded++; |
|
696 } |
|
697 else if (aHelper.RecoveryCID()==aHelper.MediaCID()) |
|
698 { |
|
699 __DEBUGGER(); |
|
700 User::Leave(KErrCorrupt); // remote has contravened spec |
|
701 } |
|
702 } |
|
703 } |
|
704 |
|
705 if (!numExtraLogicalChannelsNeeded) |
|
706 { |
|
707 // everything we need is already here, kick state machine and wait for sessions to attach |
|
708 ChangeState(aStream, CAVStreamStateFactory::EStreamStateWaitForSessions); |
|
709 // tell signalling session |
|
710 aStream.iStreamNotify.StreamAccepted(aStream.LocalSEID(), |
|
711 aStream.RemoteSEID(), aRequireReporting, aRequireRecovery); |
|
712 } |
|
713 else |
|
714 { |
|
715 // TCs were created above, now wait for appropriate logical channels |
|
716 aStream.iFactoryJob = aStream.iProtocol.LogicalChannelFactory(). |
|
717 ExpectSessionLogicalChannelsL(aStream, |
|
718 numExtraLogicalChannelsNeeded); |
|
719 ChangeState(aStream, CAVStreamStateFactory::EStreamStateWaitingForLogicalChannels); |
|
720 } |
|
721 } |
|
722 |
|
723 |
|
724 void TAVStreamStateACPConfigured::DoAwaitDirectChannelsL(CAVStream& aStream, |
|
725 TBool aRequireReporting, |
|
726 TBool aRequireRecovery) const |
|
727 { |
|
728 LOG_FUNC |
|
729 // create the necessary Transport Channels ready for the logical channels |
|
730 // assume all inbound TCs are mux -our seps always do muxing, and allows for "upgrades" |
|
731 // if others SEPs want to add sessions to them later |
|
732 |
|
733 TInt numExtraLogicalChannelsNeeded = 0; |
|
734 TAvdtpSockAddr address = aStream.iRemoteAddress; |
|
735 address.SetSession(EMedia); |
|
736 |
|
737 #ifdef __SYMBIAN_AVDTP_HIDE_MUX |
|
738 #define CAN_BECOME_MUX EFalse |
|
739 #else |
|
740 #pragma message("Not sure if this true - remember morgan, cannot upgrade as dont know which "direct" channel has which TCID") |
|
741 #define CAN_BECOME_MUX ETrue |
|
742 #endif |
|
743 |
|
744 aStream.iMediaBinding.iChannel = aStream.iProtocol.GetTransportChannel(address, CAN_BECOME_MUX); |
|
745 User::LeaveIfNull(aStream.iMediaBinding.iChannel); |
|
746 numExtraLogicalChannelsNeeded++; |
|
747 |
|
748 if (aRequireReporting) |
|
749 { |
|
750 address.SetSession(EReporting); |
|
751 aStream.iReportingBinding.iChannel = aStream.iProtocol.GetTransportChannel(address, CAN_BECOME_MUX); |
|
752 User::LeaveIfNull(aStream.iReportingBinding.iChannel); |
|
753 numExtraLogicalChannelsNeeded++; |
|
754 } |
|
755 |
|
756 if (aRequireRecovery) |
|
757 { |
|
758 address.SetSession(ERecovery); |
|
759 aStream.iRecoveryBinding.iChannel = aStream.iProtocol.GetTransportChannel(address, CAN_BECOME_MUX); |
|
760 User::LeaveIfNull(aStream.iRecoveryBinding.iChannel); |
|
761 numExtraLogicalChannelsNeeded++; |
|
762 } |
|
763 |
|
764 LOG1(_L8("Awaiting %d logical channels"), numExtraLogicalChannelsNeeded); |
|
765 |
|
766 // wait for appropriate logical channels |
|
767 aStream.iFactoryJob = aStream.iProtocol.LogicalChannelFactory(). |
|
768 ExpectSessionLogicalChannelsL(aStream, |
|
769 numExtraLogicalChannelsNeeded); |
|
770 |
|
771 ChangeState(aStream, CAVStreamStateFactory::EStreamStateWaitingForLogicalChannels); |
|
772 } |
|
773 |
|
774 TInt TAVStreamStateACPConfigured::AddSession(CAVStream& /*aStream*/, |
|
775 TAvdtpTransportSessionType /*aType*/, |
|
776 CUserPlaneTransportSession& /*aSession*/, |
|
777 CTransportChannel*& /*aTransportChannel*/) const |
|
778 { |
|
779 LOG_FUNC |
|
780 return KErrNotReady; |
|
781 } |
|
782 |
|
783 void TAVStreamStateACPConfigured::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
784 { |
|
785 LOG_FUNC |
|
786 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
787 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
788 } |
|
789 |
|
790 |
|
791 void TAVStreamStateOpen::DropSession(CAVStream& aStream, TAvdtpTransportSessionType /*aType*/, CUserPlaneTransportSession& /*aSession*/) const |
|
792 { |
|
793 LOG_FUNC |
|
794 // if any session in the stream is shutdown |
|
795 // we invalidate the stream, and thus send a Release |
|
796 |
|
797 // we leave the GC to actually shutdown the session saps |
|
798 DoRelease(aStream); |
|
799 // leave unbinding transport objects until ReleaseConfirm |
|
800 } |
|
801 |
|
802 void TAVStreamStateOpen::Release(CAVStream& aStream) const |
|
803 { |
|
804 LOG_FUNC |
|
805 // we need to Release this as the object is going |
|
806 DoRelease(aStream); |
|
807 } |
|
808 |
|
809 void TAVStreamStateOpen::DoRelease(CAVStream& aStream) const |
|
810 { |
|
811 LOG_FUNC |
|
812 CSignallingChannel* sigch = aStream.iProtocol.FindSignallingChannel(aStream.iRemoteAddress.BTAddr()); |
|
813 |
|
814 if (sigch) |
|
815 { |
|
816 sigch->SendRelease(aStream, aStream.RemoteSEID()); |
|
817 ChangeState(aStream, CAVStreamStateFactory::EStreamStateReleasing); |
|
818 } |
|
819 } |
|
820 |
|
821 void TAVStreamStateOpen::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
822 { |
|
823 LOG_FUNC |
|
824 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
825 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
826 } |
|
827 |
|
828 TInt TAVStreamStateReady::AddSession(CAVStream& /*aStream*/, |
|
829 TAvdtpTransportSessionType /*aType*/, |
|
830 CUserPlaneTransportSession& /*aSession*/, |
|
831 CTransportChannel*& /*aTransportChannel*/) const |
|
832 { |
|
833 LOG_FUNC |
|
834 #ifdef _DEBUG |
|
835 return KErrPanicAvdtpOpenInBadState; |
|
836 #else |
|
837 return KErrNotReady; |
|
838 #endif |
|
839 } |
|
840 |
|
841 void TAVStreamStateReady::SetConfigurationL(CAVStream& aStream, |
|
842 RBuf8& aPacketBuffer, |
|
843 CSignallingChannel& aSignallingChannel, |
|
844 TBool __DEBUG_ONLY(aReportingConfigured), |
|
845 TBool __DEBUG_ONLY(aRecoveryConfigured)) const |
|
846 { |
|
847 // this is a Reconfigure - see GAVDP spec |
|
848 LOG_FUNC |
|
849 __ASSERT_DEBUG(!aReportingConfigured && !aRecoveryConfigured, PanicInState(EAvdtpReconfigurationCapabilitiesNotChecked)); |
|
850 |
|
851 // First check that we are in a state to send a reconfigure command as |
|
852 // we don't want to send one unless we can commit the pending configuration |
|
853 TInt err = aStream.iLocalSEP->CheckConfigurationState(ETrue); |
|
854 |
|
855 if (!err) |
|
856 { |
|
857 err = aSignallingChannel.SendReconfigure(aStream, aStream.RemoteSEID(), aPacketBuffer); |
|
858 |
|
859 if (!err) |
|
860 { |
|
861 // tell SEP |
|
862 err = aStream.iLocalSEP->SetPendingConfiguration(aPacketBuffer, ETrue); //takes ownership of RBuf |
|
863 |
|
864 // we should not get an error here as we called CheckConfigurationState above |
|
865 __ASSERT_DEBUG(!err, PanicInState(EAvdtpInconsistentPendingReconfigurationState)); |
|
866 |
|
867 if (!err) |
|
868 { |
|
869 aPacketBuffer.Assign(NULL); // since ownership transfer succeeded |
|
870 // release configuration buffer as we own it in this state |
|
871 ChangeState(aStream, CAVStreamStateFactory::EStreamStateReconfiguring); |
|
872 } |
|
873 } |
|
874 } |
|
875 |
|
876 User::LeaveIfError(err); |
|
877 } |
|
878 |
|
879 /** |
|
880 * Before the OpenStream returns, gavdp might get Cancel()ed. At this point we have an outstanding |
|
881 * request on the signalling channel. We can't issue a cancel on the individual request, and we |
|
882 * can't close sigch down as it's shared, but there should only be one outstanding for this stream, |
|
883 * so we can cancel all transactions for it. |
|
884 */ |
|
885 void TAVStreamStateOpening::DropSession(CAVStream& aStream, TAvdtpTransportSessionType /*aType*/, |
|
886 CUserPlaneTransportSession& /*aSession*/) const |
|
887 { |
|
888 LOG_FUNC |
|
889 CSignallingChannel* sigch = aStream.iProtocol.FindSignallingChannel(aStream.DeviceAddress()); |
|
890 __ASSERT_DEBUG(sigch, PanicInState(EAvdtpSignallingChannelShouldExist)); |
|
891 sigch->CancelTransactions(aStream); |
|
892 ChangeState(aStream, CAVStreamStateFactory::EStreamStateIdle); |
|
893 } |
|
894 |
|
895 void TAVStreamStateOpening::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
896 { |
|
897 LOG_FUNC |
|
898 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
899 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
900 } |
|
901 |
|
902 void TAVStreamStateOpening::OpenConfirm(CAVStream& aStream, TInt aResult, TSEID __DEBUG_ONLY(aRemoteSEID)) const |
|
903 { |
|
904 LOG_FUNC |
|
905 // good! |
|
906 __ASSERT_DEBUG(aRemoteSEID == aStream.RemoteSEID(), PanicInState(EAvdtpConfirmAddressedToWrongRequester)); |
|
907 TInt ret = KErrNone; |
|
908 |
|
909 // now we kick TCs into life |
|
910 if (aResult) |
|
911 { |
|
912 // can return to Idle, user could try this operation again |
|
913 // the way Open works means we have transport sessions interested in result of this |
|
914 // they need to tell their sockets that their connects failed |
|
915 |
|
916 ChangeState(aStream, CAVStreamStateFactory::EStreamStateIdle); |
|
917 |
|
918 // no need to tell signalling session as Opening is not available to RGavdp |
|
919 // Opening is performed when the necessary sockets are created and connected in a stream |
|
920 aStream.NotifyUserPlaneTransportSessionsError(NULL, aResult); |
|
921 } |
|
922 else |
|
923 { |
|
924 // create a job - see what logical channels need creating |
|
925 TInt numLogicalChannelsRequired = |
|
926 aStream.iMediaBinding.iChannel->IsConnected() ? 0 : 1; |
|
927 |
|
928 if (aStream.iReportingBinding.iChannel) |
|
929 { |
|
930 // a reporting transport channel is required - but is it available? |
|
931 if (!aStream.iReportingBinding.iChannel->IsConnected()) |
|
932 { |
|
933 // this is required, so add into job |
|
934 numLogicalChannelsRequired++; |
|
935 } |
|
936 } |
|
937 |
|
938 if (aStream.iRecoveryBinding.iChannel) |
|
939 { |
|
940 // a recovery transport channel is required - but is it available? |
|
941 if (!aStream.iRecoveryBinding.iChannel->IsConnected()) |
|
942 { |
|
943 // this is required, so add into job |
|
944 numLogicalChannelsRequired++; |
|
945 } |
|
946 } |
|
947 |
|
948 if (numLogicalChannelsRequired) |
|
949 { |
|
950 // if either required, kick off request... |
|
951 ChangeState(aStream, CAVStreamStateFactory::EStreamStateCreatingLogicalChannels); |
|
952 TLogicalChannelFactoryTicket ticket; |
|
953 TRAP(ret, ticket=aStream.iProtocol.LogicalChannelFactory().CreateSessionLogicalChannelsL( |
|
954 aStream.iRemoteAddress.BTAddr(), |
|
955 aStream, numLogicalChannelsRequired)); |
|
956 if (ret==KErrNone) |
|
957 { |
|
958 aStream.iFactoryJob = ticket; // record this, so we can cancel if needed |
|
959 } |
|
960 else |
|
961 { |
|
962 // stay in same state |
|
963 ChangeState(aStream, CAVStreamStateFactory::EStreamStateOpening); |
|
964 } |
|
965 } |
|
966 else |
|
967 { |
|
968 ChangeState(aStream, CAVStreamStateFactory::EStreamStateOpen); |
|
969 // all TCs appear to be available without creating new ones |
|
970 aStream.TransportChannelsReady(); |
|
971 } |
|
972 } |
|
973 } |
|
974 |
|
975 |
|
976 TInt TAVStreamStateReady::StartReceived(CAVStream& aStream) const |
|
977 { |
|
978 LOG_FUNC |
|
979 |
|
980 aStream.ReadyForStartIndication(); |
|
981 |
|
982 return KErrNone; |
|
983 } |
|
984 |
|
985 TInt TAVStreamStateReady::Start(CAVStream& aStream) const |
|
986 { |
|
987 LOG_FUNC |
|
988 TInt retVal = KErrNone; |
|
989 CSignallingChannel* sigch = aStream.iProtocol.FindSignallingChannel(aStream.iRemoteAddress.BTAddr()); |
|
990 |
|
991 // should always have sigch here - hence function signature |
|
992 __ASSERT_DEBUG(sigch, PanicInState(EAvdtpSignallingChannelShouldExist)); |
|
993 if (sigch) |
|
994 { |
|
995 retVal = sigch->SendStartStream(aStream, aStream.RemoteSEID()); |
|
996 ChangeState(aStream, CAVStreamStateFactory::EStreamStateStarting); |
|
997 } |
|
998 return retVal; |
|
999 } |
|
1000 |
|
1001 void TAVStreamStateReady::Started(CAVStream& aStream) const |
|
1002 { |
|
1003 LOG_FUNC |
|
1004 ChangeState(aStream, CAVStreamStateFactory::EStreamStateStreaming); |
|
1005 } |
|
1006 |
|
1007 void TAVStreamStateReady::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
1008 { |
|
1009 LOG_FUNC |
|
1010 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
1011 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
1012 } |
|
1013 |
|
1014 void TAVStreamStateStarting::Enter(CAVStream& aStream) const |
|
1015 { |
|
1016 LOG_FUNC |
|
1017 // Tell the physical link that encryption keys could be refreshed now, to prevent an auto refresh later |
|
1018 aStream.TryToAndThenPreventHostEncryptionKeyRefresh(); |
|
1019 } |
|
1020 |
|
1021 |
|
1022 void TAVStreamStateStarting::StartConfirm(CAVStream& aStream, TInt aResult, TSEID /*aRemoteSEID*/) const |
|
1023 { |
|
1024 LOG_FUNC |
|
1025 // just change state |
|
1026 if (aResult==KErrNone) |
|
1027 { |
|
1028 ChangeState(aStream, CAVStreamStateFactory::EStreamStateStreaming); |
|
1029 aStream.iStreamNotify.StreamStarted(aStream.LocalSEID()); |
|
1030 } |
|
1031 else |
|
1032 { |
|
1033 // whether suspended or idle, we return to ready |
|
1034 // but first release the prevent encryption key refresh token |
|
1035 aStream.AllowHostEncryptionKeyRefresh(); |
|
1036 ChangeState(aStream, CAVStreamStateFactory::EStreamStateReady); |
|
1037 aStream.iStreamNotify.StreamInitiatedServiceFailed(aStream, aResult); |
|
1038 } |
|
1039 } |
|
1040 |
|
1041 TInt TAVStreamStateStarting::StartReceived(CAVStream& /*aStream*/) const |
|
1042 { |
|
1043 LOG_FUNC |
|
1044 |
|
1045 // we need to tell the other end 'nope we're busy' because the starts 'crossed in the post' |
|
1046 // returning KErrInUse will tell the other end to go away (politely of course) |
|
1047 return KErrInUse; |
|
1048 } |
|
1049 |
|
1050 |
|
1051 void TAVStreamStateReleasing::Release(CAVStream& /*aStream*/) const |
|
1052 { |
|
1053 LOG_FUNC |
|
1054 // we are already releasing so do nothing. |
|
1055 } |
|
1056 |
|
1057 void TAVStreamStateReleasing::ReleaseConfirm(CAVStream& aStream, TInt /*aResult*/, TSEID /*aSEID*/) const |
|
1058 { |
|
1059 LOG_FUNC |
|
1060 // ignore error - proceed anyway |
|
1061 aStream.Released(); |
|
1062 } |
|
1063 |
|
1064 void TAVStreamStateReleasing::DropSession(CAVStream& /*aStream*/, TAvdtpTransportSessionType /*aType*/, CUserPlaneTransportSession& /*aSession*/) const |
|
1065 { |
|
1066 LOG_FUNC |
|
1067 // to guard against sending multiple Releases per dropped session |
|
1068 // since we're releasing, we don't need to send a Release, but we just consume |
|
1069 } |
|
1070 |
|
1071 void TAVStreamStateReleasing::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
1072 { |
|
1073 LOG_FUNC |
|
1074 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
1075 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
1076 } |
|
1077 |
|
1078 |
|
1079 void TAVStreamStateAborting::AbortConfirm(CAVStream& aStream, TSEID /*aSEID*/) const |
|
1080 { |
|
1081 LOG_FUNC |
|
1082 aStream.Released(); |
|
1083 } |
|
1084 |
|
1085 void TAVStreamStateAborting::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
1086 { |
|
1087 LOG_FUNC |
|
1088 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
1089 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
1090 } |
|
1091 |
|
1092 |
|
1093 void TAVStreamStateAborting::Release(CAVStream& /*aStream*/) const |
|
1094 { |
|
1095 LOG_FUNC |
|
1096 // we are already releasing so do nothing. |
|
1097 } |
|
1098 |
|
1099 |
|
1100 void TAVStreamStateCreatingLogicalChannels::LogicalChannelsAvailable(CAVStream& aStream, TLogicalChannelFactoryTicket aTicket, TInt aError) const |
|
1101 { |
|
1102 LOG_FUNC |
|
1103 aStream.iFactoryJob = aTicket; |
|
1104 aStream.BindLogicalAndTransportChannels(aTicket, aError); |
|
1105 |
|
1106 if (aError==KErrNone) |
|
1107 { |
|
1108 ChangeState(aStream, CAVStreamStateFactory::EStreamStateReady); |
|
1109 // tell sessions... |
|
1110 aStream.TransportChannelsReady(); |
|
1111 } |
|
1112 else |
|
1113 { |
|
1114 aStream.iStreamNotify.StreamInitiatedServiceFailed(aStream, aError); |
|
1115 } |
|
1116 } |
|
1117 |
|
1118 |
|
1119 void TAVStreamStateCreatingLogicalChannels::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
1120 { |
|
1121 LOG_FUNC |
|
1122 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
1123 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
1124 } |
|
1125 |
|
1126 void TAVStreamStateWaitingForLogicalChannels::Enter(CAVStream& aStream) const |
|
1127 { |
|
1128 LOG_FUNC |
|
1129 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
1130 |
|
1131 // start guard timer in case logical channels never arrive for TCs |
|
1132 aStream.StartWatchdog(); |
|
1133 } |
|
1134 |
|
1135 void TAVStreamStateWaitingForLogicalChannels::LogicalChannelsAvailable(CAVStream& aStream, TLogicalChannelFactoryTicket aResponse, TInt aError) const |
|
1136 { |
|
1137 LOG_FUNC |
|
1138 // we created the transport channels in :Await, so now we can bind |
|
1139 // then the sessions can call :AddSession and scoop up the TCs |
|
1140 aStream.iFactoryJob = aResponse; |
|
1141 aStream.BindLogicalAndTransportChannels(aResponse, aError); |
|
1142 |
|
1143 if (aError==KErrNone) |
|
1144 { |
|
1145 const TBool reportingPresent = aStream.iReportingBinding.iChannel ? ETrue : EFalse; |
|
1146 const TBool recoveryPresent = aStream.iRecoveryBinding.iChannel ? ETrue : EFalse; |
|
1147 |
|
1148 aStream.iNumSessionsRequired = AvdtpInternalUtils::NumberOfTransportObjects(reportingPresent, recoveryPresent); |
|
1149 ChangeState(aStream, CAVStreamStateFactory::EStreamStateWaitForSessions); |
|
1150 // tell signalling session |
|
1151 aStream.iStreamNotify.StreamAccepted(aStream.LocalSEID(), |
|
1152 aStream.RemoteSEID(), reportingPresent, recoveryPresent); |
|
1153 } |
|
1154 else |
|
1155 { |
|
1156 aStream.iStreamNotify.StreamInitiatedServiceFailed(aStream, aError); |
|
1157 } |
|
1158 } |
|
1159 |
|
1160 void TAVStreamStateWaitingForLogicalChannels::DropSession(CAVStream& aStream, TAvdtpTransportSessionType /*aType*/, |
|
1161 CUserPlaneTransportSession& /*aSession*/) const |
|
1162 { |
|
1163 LOG_FUNC |
|
1164 aStream.iProtocol.LogicalChannelFactory().Cancel(aStream.iFactoryJob); |
|
1165 } |
|
1166 |
|
1167 void TAVStreamStateWaitingForLogicalChannels::Exit(CAVStream& aStream) const |
|
1168 { |
|
1169 LOG_FUNC |
|
1170 // start guard timer in case logical channels never arrive for TCs |
|
1171 aStream.StopWatchdog(); |
|
1172 } |
|
1173 |
|
1174 void TAVStreamStateWaitingForLogicalChannels::WatchdogFired(CAVStream& aStream) const |
|
1175 { |
|
1176 LOG_FUNC |
|
1177 // need to tidy TCs, and Abort stream and cancel job |
|
1178 TLogicalChannelFactoryTicket nullTicket; |
|
1179 |
|
1180 aStream.BindLogicalAndTransportChannels(nullTicket, KErrTimedOut); |
|
1181 |
|
1182 aStream.iStreamNotify.StreamInitiatedServiceFailed(aStream, KErrTimedOut); |
|
1183 } |
|
1184 |
|
1185 |
|
1186 /** |
|
1187 An ACP primitive: the TCs & LCs are ready, now we are awaiting the sessions |
|
1188 to come in and connect to the TCs. The sessions do so at the behest of GAVDP |
|
1189 */ |
|
1190 TInt TAVStreamStateWaitForSessions::AddSession(CAVStream& aStream, |
|
1191 TAvdtpTransportSessionType aType, |
|
1192 CUserPlaneTransportSession& aSession, |
|
1193 CTransportChannel*& aChannel) const |
|
1194 { |
|
1195 LOG_FUNC |
|
1196 TInt ret = KErrNone; |
|
1197 |
|
1198 // bind session to channel - the channel is there, we'd have been told if it had gone |
|
1199 TTransportBinding* b = NULL; |
|
1200 |
|
1201 switch (aType) |
|
1202 { |
|
1203 case EMedia: |
|
1204 b = &aStream.iMediaBinding; |
|
1205 break; |
|
1206 case EReporting: |
|
1207 // check GAVDP isn't being naughty and asking for an unconfigured session |
|
1208 if (aStream.CheckConfigured(EServiceCategoryReporting)) |
|
1209 { |
|
1210 b = &aStream.iReportingBinding; |
|
1211 } |
|
1212 else |
|
1213 { |
|
1214 // GAVDP asking for a bearer that is not configured |
|
1215 ret = KErrNotSupported; |
|
1216 } |
|
1217 break; |
|
1218 case ERecovery: |
|
1219 // check GAVDP isn't being naughty and asking for an unconfigured session |
|
1220 if (aStream.CheckConfigured(EServiceCategoryRecovery)) |
|
1221 { |
|
1222 b = &aStream.iRecoveryBinding; |
|
1223 } |
|
1224 else |
|
1225 { |
|
1226 // GAVDP asking for a bearer that is not configured |
|
1227 ret = KErrNotSupported; |
|
1228 } |
|
1229 break; |
|
1230 default: |
|
1231 PanicInState(EAvdtpBadSessionAttachingToStream); |
|
1232 } |
|
1233 |
|
1234 if (ret == KErrNone) |
|
1235 { |
|
1236 ret = b->iChannel->AttachTransportSession(aSession, aType); |
|
1237 if (ret==KErrNone) |
|
1238 { |
|
1239 // stream needs to remember binding |
|
1240 b->iSession = &aSession; |
|
1241 // and session need to know channel |
|
1242 aChannel = b->iChannel; |
|
1243 // check if all sessions have bound |
|
1244 if (!--aStream.iNumSessionsRequired) |
|
1245 { |
|
1246 ChangeState(aStream, CAVStreamStateFactory::EStreamStateReady); |
|
1247 aStream.TransportChannelsReady(); |
|
1248 } |
|
1249 } |
|
1250 } |
|
1251 return ret; |
|
1252 } |
|
1253 |
|
1254 TInt TAVStreamStateWaitForSessions::StartReceived(CAVStream& aStream) const |
|
1255 { |
|
1256 LOG_FUNC |
|
1257 ChangeState(aStream, CAVStreamStateFactory::EStreamStateWaitForSessionsStartReceived); |
|
1258 return KErrNone; |
|
1259 } |
|
1260 |
|
1261 void TAVStreamStateWaitForSessions::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
1262 { |
|
1263 LOG_FUNC |
|
1264 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
1265 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
1266 } |
|
1267 |
|
1268 /** |
|
1269 Overrides the method in TAVStreamStateWaitForSessions. The start has already been received by |
|
1270 CSignallingSession::StartIndication, so after changing the state to EStreamStateReady data |
|
1271 stored in the CAVStream object will be used to pass a start indication to GAVDP. |
|
1272 */ |
|
1273 TInt TAVStreamStateWaitForSessionsStartReceived::AddSession(CAVStream& aStream, |
|
1274 TAvdtpTransportSessionType aType, |
|
1275 CUserPlaneTransportSession& aSession, |
|
1276 CTransportChannel*& aChannel) const |
|
1277 { |
|
1278 LOG_FUNC |
|
1279 // Call the function from the parent class to bind the session |
|
1280 TInt ret = TAVStreamStateWaitForSessions::AddSession(aStream,aType,aSession,aChannel); |
|
1281 |
|
1282 // if that worked, and all the channels are bound, we can now issue the delayed start |
|
1283 if((ret == KErrNone) && (!aStream.iNumSessionsRequired)) |
|
1284 { |
|
1285 aStream.ReadyForStartIndication(); |
|
1286 } |
|
1287 |
|
1288 return ret; |
|
1289 } |
|
1290 |
|
1291 TInt TAVStreamStateWaitForSessionsStartReceived::StartReceived(CAVStream& /*aStream*/) const |
|
1292 { |
|
1293 LOG_FUNC |
|
1294 return KErrNotReady; |
|
1295 } |
|
1296 |
|
1297 void TAVStreamStateWaitForSessionsStartReceived::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
1298 { |
|
1299 LOG_FUNC |
|
1300 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
1301 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
1302 } |
|
1303 |
|
1304 void TAVStreamStateSuspending::SuspendConfirm(CAVStream& aStream, TInt aResult, TSEID /*aRemoteSEID*/) const |
|
1305 { |
|
1306 LOG_FUNC |
|
1307 // just change state |
|
1308 if (aResult==KErrNone) |
|
1309 { |
|
1310 // no difference between a "suspended" state, and ready |
|
1311 // making them the same helps support reconfig in more states |
|
1312 ChangeState(aStream, CAVStreamStateFactory::EStreamStateReady); |
|
1313 aStream.iStreamNotify.StreamSuspended(aStream.LocalSEID()); |
|
1314 } |
|
1315 else |
|
1316 { |
|
1317 // stay in streaming state and notify the user of the error |
|
1318 ChangeState(aStream, CAVStreamStateFactory::EStreamStateStreaming); |
|
1319 aStream.iStreamNotify.StreamInitiatedServiceFailed(aStream, aResult); |
|
1320 } |
|
1321 } |
|
1322 |
|
1323 void TAVStreamStateSuspending::Suspended(CAVStream& /*aStream*/) const |
|
1324 { |
|
1325 LOG_FUNC |
|
1326 // throw away |
|
1327 } |
|
1328 |
|
1329 |
|
1330 void TAVStreamStateSuspending::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
1331 { |
|
1332 LOG_FUNC |
|
1333 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
1334 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
1335 } |
|
1336 |
|
1337 void TAVStreamStateReconfiguring::ReconfigConfirm(CAVStream& aStream, TInt aResult, |
|
1338 TSEID /*aRemoteSEID*/, TAvdtpServiceCategory aFailedCategory) const |
|
1339 { |
|
1340 LOG_FUNC |
|
1341 // ok to return to ready on success or failure |
|
1342 ChangeState(aStream, CAVStreamStateFactory::EStreamStateReady); |
|
1343 TRAPD(err, aStream.iLocalSEP->CommitPendingConfigurationL(aResult==KErrNone, ETrue)); |
|
1344 if (err!=KErrNone) |
|
1345 { |
|
1346 aStream.iStreamNotify.StreamInitiatedServiceFailed(aStream, aResult); |
|
1347 } |
|
1348 aStream.iStreamNotify.StreamConfigured(aStream.LocalSEID(), aResult, aFailedCategory); |
|
1349 } |
|
1350 |
|
1351 void TAVStreamStateReconfiguring::Enter(CAVStream& __DEBUG_ONLY(aStream)) const |
|
1352 { |
|
1353 LOG_FUNC |
|
1354 //We should not be preventing the encryption key refresh in this state. Asserting this condition. |
|
1355 __ASSERT_DEBUG(!aStream.IsHostEncryptionKeyRefreshPrevented(),Panic(EUnexpectedEncryptionKeyRefreshPrevent)); |
|
1356 } |
|
1357 |
|
1358 |
|
1359 void TAVStreamStateStreaming::Enter(CAVStream& aStream) const |
|
1360 { |
|
1361 LOG_FUNC |
|
1362 // experiments with window dragging show not much change if thread priority bumped |
|
1363 // maybe due to trying to get into esock in the first place |
|
1364 // Changing the role of the Esock_BT thread in the cmi file, from player to |
|
1365 // DealerPlayer allows messages to be passed directly to the Esock_BT thread |
|
1366 |
|
1367 aStream.iOriginalESockBTPriority = RThread().Priority(); //save the original priority of the Esock_BT thread. |
|
1368 RThread().SetPriority(EPriorityRealTime); |
|
1369 |
|
1370 } |
|
1371 |
|
1372 void TAVStreamStateStreaming::Exit(CAVStream& aStream) const |
|
1373 { |
|
1374 LOG_FUNC |
|
1375 RThread().SetPriority(aStream.iOriginalESockBTPriority);//set the priority of the thread back to the original value. |
|
1376 |
|
1377 // Tell the physical link that encryption keys could be refreshed now, to prevent an auto refresh later |
|
1378 aStream.AllowHostEncryptionKeyRefresh(); |
|
1379 } |
|
1380 |
|
1381 TInt TAVStreamStateStreaming::Suspend(CAVStream& aStream) const |
|
1382 { |
|
1383 LOG_FUNC |
|
1384 TInt retVal = KErrNone; |
|
1385 CSignallingChannel* sigch = aStream.iProtocol.FindSignallingChannel(aStream.iRemoteAddress.BTAddr()); |
|
1386 |
|
1387 __ASSERT_DEBUG(sigch, PanicInState(EAvdtpSignallingChannelShouldExist)); |
|
1388 if (sigch) |
|
1389 { |
|
1390 retVal = sigch->SendSuspendStream(aStream, aStream.RemoteSEID()); |
|
1391 if (retVal==KErrNone) |
|
1392 { |
|
1393 ChangeState(aStream, CAVStreamStateFactory::EStreamStateSuspending); |
|
1394 } |
|
1395 } |
|
1396 return retVal; |
|
1397 } |
|
1398 |
|
1399 void TAVStreamStateStreaming::Suspended(CAVStream& aStream) const |
|
1400 { |
|
1401 LOG_FUNC |
|
1402 ChangeState(aStream, CAVStreamStateFactory::EStreamStateReady); |
|
1403 } |
|
1404 |
|
1405 TBool TAVStreamStateStreaming::IsStreaming(const CAVStream& /*aStream*/) const |
|
1406 { |
|
1407 LOG_FUNC |
|
1408 return ETrue; |
|
1409 } |
|
1410 |
|
1411 TInt TAVStreamStateStreaming::Start(CAVStream& /*aStream*/) const |
|
1412 { |
|
1413 // don't want to tell remote to Start when already Streaming, cos it's BadState |
|
1414 return KErrNotReady; |
|
1415 } |
|
1416 |
|
1417 TInt TAVStreamStateStreaming::StartReceived(CAVStream& /*aStream*/) const |
|
1418 { |
|
1419 LOG_FUNC |
|
1420 return KErrNotReady; |
|
1421 } |
|
1422 |