1 /* |
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2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implementation |
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15 * |
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16 */ |
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17 |
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18 #include <usbman.h> |
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19 |
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20 #include "cusbservicecontrol.h" |
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21 #include "debug.h" |
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22 #include "panic.h" |
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23 |
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24 // --------------------------------------------------------------------------- |
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25 // |
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26 // --------------------------------------------------------------------------- |
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27 // |
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28 CUsbServiceControl::CUsbServiceControl(MUsbServiceControlObserver& aObserver, |
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29 RUsb& aUsb) : |
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30 CActive(CActive::EPriorityStandard), iObserver(aObserver), iUsb(aUsb), |
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31 iPersonalityId(0) |
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32 { |
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33 CActiveScheduler::Add(this); |
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34 } |
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35 |
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36 // --------------------------------------------------------------------------- |
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37 // |
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38 // --------------------------------------------------------------------------- |
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39 // |
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40 CUsbServiceControl::~CUsbServiceControl() |
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41 { |
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42 LOG_FUNC |
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43 |
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44 Cancel(); |
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45 } |
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46 |
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47 // --------------------------------------------------------------------------- |
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48 // |
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49 // --------------------------------------------------------------------------- |
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50 // |
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51 void CUsbServiceControl::ConstructL() |
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52 { |
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53 LOG_FUNC |
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54 } |
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55 |
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56 // --------------------------------------------------------------------------- |
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57 // |
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58 // --------------------------------------------------------------------------- |
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59 // |
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60 CUsbServiceControl* CUsbServiceControl::NewL( |
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61 MUsbServiceControlObserver& aObserver, RUsb& aUsb) |
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62 { |
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63 LOG_FUNC |
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64 |
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65 CUsbServiceControl* self = new (ELeave) CUsbServiceControl(aObserver, |
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66 aUsb); |
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67 CleanupStack::PushL(self); |
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68 self->ConstructL(); |
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69 CleanupStack::Pop(self); // pop self |
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70 return self; |
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71 } |
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72 |
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73 // --------------------------------------------------------------------------- |
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74 // |
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75 // --------------------------------------------------------------------------- |
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76 // |
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77 TInt CUsbServiceControl::StartL(TInt aPersonalityId) |
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78 { |
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79 LOG_FUNC |
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80 |
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81 LOG1( "aPersonalityId = %d" , aPersonalityId); |
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82 |
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83 TUsbServiceState serviceState; |
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84 TInt err = iUsb.GetServiceState(serviceState); |
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85 |
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86 if (KErrNone != err) |
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87 { |
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88 return err; |
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89 } |
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90 |
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91 switch (serviceState) |
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92 { |
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93 case EUsbServiceIdle: |
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94 { |
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95 LOG( "UsbServiceState == EUsbServiceIdle" ); |
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96 |
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97 iPersonalityId = aPersonalityId; // when request completed, this will indicate that we started what we wanted |
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98 if (IsActive()) |
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99 { |
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100 LOG("Request is outstanding, cancelling first" ); |
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101 Cancel(); |
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102 } |
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103 iUsb.TryStart(aPersonalityId, iStatus); |
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104 SetActive(); |
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105 break; |
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106 } |
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107 |
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108 case EUsbServiceStarted: |
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109 { |
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110 LOG("UsbServiceState == EUsbServiceStarted"); |
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111 |
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112 TInt currentPersonality(0); |
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113 err = iUsb.GetCurrentPersonalityId(currentPersonality); |
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114 if (KErrNone != err) |
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115 { |
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116 LOG1( "Error getting current personality err = %d" , err); |
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117 return err; |
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118 } |
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119 |
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120 if (aPersonalityId == currentPersonality) // already started |
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121 { |
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122 LOG("Personality already started" ); |
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123 iObserver.UsbServiceControlReqCompletedL(KErrInUse); |
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124 return KErrNone; |
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125 } |
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126 |
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127 // we need to stop current personality and start service with new personailty id |
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128 iPersonalityId = aPersonalityId; // this will indicate that we want to start this personality after |
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129 |
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130 StopL(); |
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131 |
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132 // start new personality in RunL() when state is Idle |
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133 |
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134 break; |
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135 } |
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136 case EUsbServiceStarting: |
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137 { |
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138 LOG("UsbServiceState == EUsbServiceStarting" ); |
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139 // do exactly the same as in case of EUsbServiceStopping; |
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140 // break statement is not required here |
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141 } |
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142 case EUsbServiceStopping: |
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143 { |
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144 LOG( "UsbServiceState == EUsbServiceStopping" ); |
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145 |
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146 // subscribe for usb service state change, and start new usb service once current one started/stopped |
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147 iPersonalityId = aPersonalityId; // this will indicate that we want to start this personality |
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148 |
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149 // this check is needed due to usb service might be stopping by other client |
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150 if (IsActive()) |
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151 { |
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152 LOG( "Request outstanding. Waiting for completion" ); |
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153 return KErrNone; // when the outstanding request get completed, we start usb services with iPersonalityId |
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154 } |
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155 |
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156 // otherwise, monitor usb service state |
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157 iUsb.ServiceStateNotification(iServiceState, iStatus); |
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158 SetActive(); |
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159 |
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160 break; |
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161 } |
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162 case EUsbServiceFatalError: |
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163 { |
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164 LOG( "UsbServiceState == EUsbServiceFatalError" ); |
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165 return KErrGeneral; |
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166 } |
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167 default: |
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168 { |
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169 PANIC( EUnknownUsbServiceState); |
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170 } |
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171 } |
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172 |
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173 return KErrNone; |
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174 |
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175 } |
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176 |
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177 // --------------------------------------------------------------------------- |
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178 // |
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179 // --------------------------------------------------------------------------- |
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180 // |
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181 TInt CUsbServiceControl::StopL() |
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182 { |
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183 LOG_FUNC |
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184 |
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185 TUsbServiceState serviceState; |
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186 TInt err = iUsb.GetServiceState(serviceState); |
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187 |
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188 LOG2("err = %d; serviceState = %d" , err, serviceState); |
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189 |
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190 if (KErrNone != err) |
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191 { |
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192 return err; |
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193 } |
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194 |
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195 switch (serviceState) |
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196 { |
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197 case EUsbServiceIdle: |
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198 { |
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199 LOG("UsbServiceState == EUsbServiceIdle" ); |
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200 |
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201 return KErrNone; |
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202 } |
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203 |
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204 case EUsbServiceStarted: |
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205 { |
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206 LOG("UsbServiceState == EUsbServiceStarted" ); |
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207 |
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208 if (IsActive()) |
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209 { |
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210 LOG("Request is outstanding, cancelling it" ); |
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211 Cancel(); |
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212 } |
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213 iUsb.TryStop(iStatus); |
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214 SetActive(); |
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215 |
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216 break; |
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217 } |
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218 case EUsbServiceStopping: |
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219 { |
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220 LOG( "UsbServiceState == EUsbServiceStopping" ); |
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221 // do exactly the same as in case of EUsbServiceStarting; |
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222 // break statement is not required here |
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223 } |
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224 case EUsbServiceStarting: |
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225 { |
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226 LOG("UsbServiceState == EUsbServiceStarting" ); |
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227 |
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228 // subscribe for usb service state change, and stop usb service once current one started |
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229 iPersonalityId = 0; // this will indicate that we do not want to start this personality |
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230 |
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231 // this check is needed due to usb service might be starting by other client |
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232 if (IsActive()) |
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233 { |
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234 LOG("Request is outstanding, waiting for completion" ); |
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235 return KErrNone; // when this request get completed, we request to stop usb services |
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236 } |
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237 |
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238 // otherwise, monitor usb service state |
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239 iUsb.ServiceStateNotification(iServiceState, iStatus); |
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240 SetActive(); |
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241 |
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242 break; |
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243 } |
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244 case EUsbServiceFatalError: |
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245 { |
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246 LOG("UsbServiceState == EUsbServiceFatalError" ); |
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247 return KErrGeneral; |
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248 } |
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249 default: |
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250 { |
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251 PANIC( EUnknownUsbServiceState); |
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252 } |
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253 } |
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254 return KErrNone; |
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255 } |
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256 |
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257 // --------------------------------------------------------------------------- |
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258 // |
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259 // --------------------------------------------------------------------------- |
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260 // |
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261 void CUsbServiceControl::RunL() |
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262 { |
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263 LOG_FUNC |
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264 |
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265 LOG1("iStatus = %d" , iStatus.Int()); |
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266 |
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267 if (KErrNone != iStatus.Int()) |
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268 { |
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269 iObserver.UsbServiceControlReqCompletedL(iStatus.Int()); |
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270 return; |
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271 } |
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272 |
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273 TUsbServiceState serviceState; |
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274 TInt err = iUsb.GetServiceState(serviceState); |
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275 |
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276 if (KErrNone != err) |
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277 { |
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278 LOG1("Error while getting service state %d" , err); |
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279 iObserver.UsbServiceControlReqCompletedL(err); |
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280 return; |
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281 } |
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282 |
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283 switch (serviceState) |
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284 { |
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285 case EUsbServiceIdle: // usb service stopped |
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286 { |
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287 LOG("UsbServiceState == EUsbServiceIdle" ); |
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288 |
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289 if (iPersonalityId != 0) // during service stopping, requested to start it |
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290 { |
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291 LOG1("Requested to start personality %d. Starting it." , iPersonalityId); |
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292 TInt personalityId = iPersonalityId; |
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293 iPersonalityId = 0; // reset |
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294 err = StartL(personalityId); |
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295 if (KErrNone != err) |
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296 { |
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297 iObserver.UsbServiceControlReqCompletedL(err); |
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298 } |
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299 return; |
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300 } |
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301 |
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302 // otherwise, we've done, notify |
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303 iObserver.UsbServiceControlReqCompletedL(KErrNone); |
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304 break; |
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305 } |
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306 |
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307 case EUsbServiceStarted: |
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308 { |
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309 LOG("UsbServiceState == EUsbServiceStarted" ); |
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310 |
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311 TInt currentPersonality(0); |
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312 err = iUsb.GetCurrentPersonalityId(currentPersonality); |
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313 if (KErrNone != err) |
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314 { |
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315 LOG1("Error while getting PersonalityId err = %d" , err); |
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316 iObserver.UsbServiceControlReqCompletedL(err); |
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317 return; |
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318 } |
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319 |
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320 if (iPersonalityId == currentPersonality) // already done |
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321 { |
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322 LOG("Personality already started" ); |
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323 iPersonalityId = 0; |
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324 iObserver.UsbServiceControlReqCompletedL(KErrNone); |
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325 return; |
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326 } |
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327 |
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328 if (iPersonalityId == 0) // during service start requested to stop it |
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329 { |
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330 LOG("Requested to stop personality. Stopping." ); |
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331 err = StopL(); |
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332 if (KErrNone != err) |
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333 { |
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334 LOG1("Error while stopping personality err = %d" , err); |
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335 iObserver.UsbServiceControlReqCompletedL(err); |
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336 } |
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337 return; |
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338 } |
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339 |
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340 // otherwise, during service start, requested to start it with another personality |
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341 LOG1( "Requested to start personality %d. Starting it.", iPersonalityId); |
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342 TInt personalityId = iPersonalityId; |
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343 iPersonalityId = 0; // reset |
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344 err = StartL(personalityId); |
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345 if (KErrNone != err) |
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346 { |
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347 LOG1("Error while starting personality err = %d" , err); |
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348 iObserver.UsbServiceControlReqCompletedL(err); |
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349 } |
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350 break; |
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351 } |
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352 |
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353 case EUsbServiceStarting: |
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354 { |
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355 // do exactly same as in EUsbServiceStopping |
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356 // break statement is not required here |
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357 LOG("State == EUsbServiceStarting. Continue." ); |
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358 } |
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359 case EUsbServiceStopping: |
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360 { |
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361 // we are not interested in these states, just continue monitoring |
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362 LOG("State == EUsbServiceStopping. Continue." ); |
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363 iUsb.ServiceStateNotification(iServiceState, iStatus); |
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364 SetActive(); |
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365 break; |
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366 } |
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367 case EUsbServiceFatalError: |
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368 { |
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369 LOG("UsbServiceState == EUsbServiceFatalError" ); |
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370 iObserver.UsbServiceControlReqCompletedL(KErrGeneral); |
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371 break; |
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372 } |
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373 default: |
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374 { |
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375 PANIC( EUnknownUsbServiceState); |
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376 } |
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377 } |
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378 |
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379 } |
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380 |
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381 // --------------------------------------------------------------------------- |
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382 // |
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383 // --------------------------------------------------------------------------- |
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384 // |
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385 TInt CUsbServiceControl::RunError(TInt aError) |
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386 { |
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387 LOG_FUNC |
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388 LOG1("aError = %d", aError ); |
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389 TRAP_IGNORE(iObserver.UsbServiceControlReqCompletedL(aError)); |
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390 |
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391 return KErrNone; |
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392 } |
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393 |
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394 // --------------------------------------------------------------------------- |
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395 // |
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396 // --------------------------------------------------------------------------- |
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397 // |
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398 void CUsbServiceControl::DoCancel() |
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399 { |
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400 LOG( "Cancelling interest to Usb TryStart.") |
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401 iUsb.CancelInterest(RUsb::ETryStart); |
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402 LOG( "Cancelling interest to Usb TrySop.") |
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403 iUsb.CancelInterest(RUsb::ETryStop); |
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404 LOG("Cancelling interest to usb states notifications.") |
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405 iUsb.ServiceStateNotificationCancel(); |
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406 } |
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