1 /* |
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2 * Copyright (c) 2002-2009 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: This implements CUsbActiveState class. |
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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 // INCLUDE FILES |
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20 #include <usbman.h> |
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21 #include "debug.h" |
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22 #include "cusbactivestate.h" |
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23 #include "cusbwatcher.h" |
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24 |
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25 // CONSTANTS |
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26 const TUint KUsbAllStates = 0xFFFFFFFF; |
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27 |
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28 // ============================ MEMBER FUNCTIONS ============================== |
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29 |
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30 // ---------------------------------------------------------------------------- |
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31 // C++ default constructor can NOT contain any code, that might leave. |
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32 // ---------------------------------------------------------------------------- |
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33 // |
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34 CUsbActiveState::CUsbActiveState( RUsb& aUsbMan, CUsbWatcher& aOwner ) |
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35 : CActive( EPriorityStandard ) |
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36 , iUsbMan( aUsbMan ) |
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37 , iOwner( aOwner ) |
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38 , iPreviousState( EUsbDeviceStateUndefined ) |
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39 { |
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40 LOG_FUNC |
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41 |
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42 CActiveScheduler::Add( this ); |
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43 } |
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44 |
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45 // ---------------------------------------------------------------------------- |
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46 // Symbian 2nd phase constructor can leave. |
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47 // ---------------------------------------------------------------------------- |
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48 // |
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49 void CUsbActiveState::ConstructL() |
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50 { |
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51 LOG_FUNC |
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52 |
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53 LEAVEIFERROR( iUsbMan.GetDeviceState( iCurrentState ) ); |
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54 LOG1( "Intial UsbDeviceState = %d" , iCurrentState ); |
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55 |
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56 // start USB if cable is pluged-in at bootup |
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57 if( EUsbDeviceStateUndefined != iCurrentState ) |
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58 { |
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59 iOwner.StateChangeNotify( iPreviousState, iCurrentState ); |
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60 iPreviousState = iCurrentState; |
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61 } |
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62 iUsbMan.DeviceStateNotification( KUsbAllStates, iCurrentState, iStatus ); |
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63 SetActive(); |
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64 } |
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65 |
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66 // ---------------------------------------------------------------------------- |
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67 // Two-phased constructor. |
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68 // ---------------------------------------------------------------------------- |
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69 // |
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70 CUsbActiveState* CUsbActiveState::NewL( RUsb& aUsbMan, CUsbWatcher& aOwner ) |
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71 { |
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72 LOG_FUNC |
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73 |
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74 CUsbActiveState* self = new ( ELeave ) CUsbActiveState( aUsbMan, aOwner ); |
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75 CleanupStack::PushL( self ); |
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76 self->ConstructL(); |
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77 CleanupStack::Pop(); // pop self |
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78 return self; |
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79 } |
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80 |
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81 // Destructor |
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82 CUsbActiveState::~CUsbActiveState() |
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83 { |
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84 LOG_FUNC |
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85 |
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86 Cancel(); |
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87 } |
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88 |
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89 // ---------------------------------------------------------------------------- |
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90 // This function is called when device state is changed. |
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91 // ---------------------------------------------------------------------------- |
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92 // |
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93 void CUsbActiveState::RunL() |
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94 { |
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95 LOG_FUNC |
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96 |
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97 LEAVEIFERROR( iStatus.Int() ); // Close process if error happens here |
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98 |
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99 TUsbDeviceState newState = iCurrentState; |
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100 iUsbMan.DeviceStateNotification( KUsbAllStates, iCurrentState, |
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101 iStatus ); |
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102 SetActive(); |
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103 |
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104 // Notify only if there is a change |
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105 if ( newState != iPreviousState ) |
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106 { |
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107 LOG2( "USB device state changed: %d ==> %d", iPreviousState, |
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108 newState ); |
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109 iOwner.StateChangeNotify( iPreviousState, newState ); |
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110 iPreviousState = newState; |
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111 } |
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112 else |
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113 { |
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114 LOG2("USB device change ignored: %d -> %d", iPreviousState, |
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115 newState ); |
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116 } |
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117 } |
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118 |
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119 // ---------------------------------------------------------------------------- |
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120 // Standard active object cancellation function. |
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121 // ---------------------------------------------------------------------------- |
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122 // |
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123 void CUsbActiveState::DoCancel() |
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124 { |
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125 LOG_FUNC |
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126 |
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127 iUsbMan.DeviceStateNotificationCancel(); |
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128 } |
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129 |
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130 // ---------------------------------------------------------------------------- |
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131 // Get current device state. |
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132 // ---------------------------------------------------------------------------- |
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133 // |
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134 TUsbDeviceState CUsbActiveState::CurrentState() |
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135 { |
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136 LOG_FUNC |
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137 |
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138 return iCurrentState; |
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139 } |
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140 |
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141 // ---------------------------------------------------------------------------- |
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142 // Get previous device state. |
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143 // ---------------------------------------------------------------------------- |
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144 // |
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145 TUsbDeviceState CUsbActiveState::PreviousState() |
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146 { |
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147 LOG_FUNC |
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148 |
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149 return iPreviousState; |
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150 } |
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151 |
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152 // End of file |
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