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1 /* |
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2 * Copyright (c) 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: |
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15 * |
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16 */ |
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17 #include "cxecameradevicecontrolsymbian.h" |
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18 #include "cxesettingsimp.h" |
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19 #include "cxefeaturemanagerimp.h" |
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20 #include "cxesettingsmodel.h" |
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21 #include "cxutils.h" |
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22 #include "cxenamespace.h" |
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23 #include "cxeerrormappingsymbian.h" |
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24 #include "cxestate.h" |
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25 |
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26 #include "OstTraceDefinitions.h" |
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27 #ifdef OST_TRACE_COMPILER_IN_USE |
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28 #include "cxecameradevicecontrolsymbianTraces.h" |
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29 #endif |
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30 |
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31 |
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32 |
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33 CxeCameraDeviceControlSymbian::CxeCameraDeviceControlSymbian() |
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34 : CxeStateMachine("CxeCameraDeviceControlSymbian"), |
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35 mCameraDevice(NULL), |
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36 mCameraIndex(Cxe::PrimaryCameraIndex), |
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37 mCameraMode(Cxe::ImageMode) |
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38 { |
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39 CX_DEBUG_ENTER_FUNCTION(); |
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40 |
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41 #ifdef FORCE_SECONDARY_CAMERA |
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42 mCameraIndex = Cxe::SecondaryCameraIndex; |
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43 #endif |
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44 qRegisterMetaType<CxeCameraDeviceControl::State>(); |
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45 initializeStates(); |
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46 |
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47 mCameraDevice = new CxeCameraDevice(); |
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48 |
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49 CX_DEBUG_EXIT_FUNCTION(); |
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50 } |
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51 |
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52 CxeCameraDeviceControlSymbian::~CxeCameraDeviceControlSymbian() |
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53 { |
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54 CX_DEBUG_ENTER_FUNCTION(); |
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55 |
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56 // release current camera |
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57 releaseCurrentCamera(); |
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58 |
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59 delete mCameraDevice; |
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60 |
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61 CX_DEBUG_EXIT_FUNCTION(); |
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62 } |
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63 |
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64 void CxeCameraDeviceControlSymbian::init() |
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65 { |
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66 CX_DEBUG_ENTER_FUNCTION(); |
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67 |
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68 CxeError::Id err = mCameraDevice->newCamera(mCameraIndex, this); |
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69 |
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70 if (err) { |
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71 emit initModeComplete(err); |
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72 } |
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73 |
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74 CX_DEBUG_EXIT_FUNCTION(); |
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75 } |
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76 |
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77 void CxeCameraDeviceControlSymbian::reserve() |
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78 { |
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79 CX_DEBUG_ENTER_FUNCTION(); |
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80 |
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81 CX_DEBUG_ASSERT(mCameraDevice && mCameraDevice->camera()); |
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82 |
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83 if (state() == Idle) { |
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84 setState(Initializing); |
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85 mCameraDevice->camera()->Reserve(); |
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86 OstTrace0(camerax_performance, CXECAMERADEVICECONTROLSYMBIAN_RESERVE, "msg: e_CX_RESERVE 1"); |
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87 } else if (state() == PendingRelease) { |
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88 // if we get a reserve request and if there is a pending release |
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89 // it is just fine to continue the init operation. |
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90 setState(Initializing); |
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91 } else { |
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92 // nothing to do |
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93 } |
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94 |
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95 CX_DEBUG_EXIT_FUNCTION(); |
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96 } |
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97 |
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98 void CxeCameraDeviceControlSymbian::powerOn() |
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99 { |
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100 CX_DEBUG_ENTER_FUNCTION(); |
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101 |
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102 CX_DEBUG_ASSERT(mCameraDevice && mCameraDevice->camera()); |
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103 if (state() == Initializing) { |
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104 mCameraDevice->camera()->PowerOn(); |
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105 OstTrace0(camerax_performance, CXECAMERADEVICECONTROLSYMBIAN_POWERON, "msg: e_CX_POWER_ON 1"); |
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106 } |
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107 CX_DEBUG_EXIT_FUNCTION(); |
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108 } |
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109 |
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110 void CxeCameraDeviceControlSymbian::HandleEvent(const TECAMEvent &aEvent) |
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111 { |
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112 doHandleEvent( aEvent ); |
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113 emit cameraEvent( aEvent.iEventType.iUid, aEvent.iErrorCode ); |
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114 } |
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115 |
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116 void CxeCameraDeviceControlSymbian::doHandleEvent(const TECAMEvent &aEvent) |
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117 { |
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118 CX_DEBUG_ENTER_FUNCTION(); |
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119 |
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120 CX_DEBUG(("Cxe: event 0x%08x, %d", aEvent.iEventType.iUid, aEvent.iErrorCode)); |
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121 |
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122 if(aEvent.iEventType == KUidECamEventReserveComplete) { |
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123 handleReserveComplete(aEvent.iErrorCode); |
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124 } |
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125 else if(aEvent.iEventType == KUidECamEventPowerOnComplete) { |
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126 handlePowerOnComplete(aEvent.iErrorCode); |
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127 } |
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128 else if(aEvent.iEventType == KUidECamEventCameraNoLongerReserved) |
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129 { |
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130 handleNoLongerReserved(aEvent.iErrorCode); |
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131 } |
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132 else |
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133 { |
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134 // We don't care about this event -- ignore |
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135 } |
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136 |
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137 CX_DEBUG_EXIT_FUNCTION(); |
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138 } |
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139 |
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140 void CxeCameraDeviceControlSymbian::handleReserveComplete(int error) |
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141 { |
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142 CX_DEBUG_ENTER_FUNCTION(); |
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143 OstTrace0( camerax_performance, CXECAMERADEVICECONTROLSYMBIAN_HANDLERESERVECOMPLETE, "msg: e_CX_RESERVE 0" ); |
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144 |
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145 if(state() == PendingRelease) { |
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146 release(); |
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147 } else { |
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148 if (!error) { |
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149 powerOn(); |
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150 } else { |
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151 emit initModeComplete(CxeErrorHandlingSymbian::map(error)); |
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152 setState(Idle); |
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153 } |
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154 } |
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155 |
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156 CX_DEBUG_EXIT_FUNCTION(); |
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157 } |
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158 |
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159 void CxeCameraDeviceControlSymbian::handlePowerOnComplete(int error) |
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160 { |
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161 CX_DEBUG_ENTER_FUNCTION(); |
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162 OstTrace0(camerax_performance, CXECAMERADEVICECONTROLSYMBIAN_HANDLEPOWERONCOMPLETE, "msg: e_CX_POWER_ON 0"); |
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163 |
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164 if(state() == PendingRelease) { |
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165 release(); |
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166 } else { |
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167 if (!error) { |
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168 setState(Ready); |
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169 emit deviceReady(); // this will trigger prepare for either still or video mode |
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170 } else { |
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171 setState(PendingRelease); |
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172 release(); |
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173 emit initModeComplete(CxeErrorHandlingSymbian::map(error)); |
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174 } |
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175 } |
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176 |
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177 CX_DEBUG_EXIT_FUNCTION(); |
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178 } |
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179 |
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180 void CxeCameraDeviceControlSymbian::handleNoLongerReserved(int /* error */) |
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181 { |
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182 setState( Idle ); |
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183 //! @todo: handle cases where camera is lost |
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184 } |
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185 |
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186 |
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187 /* |
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188 * switch between camera <-> primary <-> secondary |
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189 */ |
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190 |
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191 CxeError::Id CxeCameraDeviceControlSymbian::switchCamera(Cxe::CameraIndex cameraIndex) |
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192 { |
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193 CX_DEBUG_ENTER_FUNCTION(); |
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194 |
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195 #ifdef FORCE_SECONDARY_CAMERA |
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196 // 2nd camera forced use, make us believe camera never needs to be swithed. |
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197 CX_DEBUG(("CxeCameraDeviceControlSymbian::switchCamera() second camera forced, skip switch")); |
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198 cameraIndex = mCameraIndex; |
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199 #endif |
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200 |
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201 // during mode change, we have to re-create camera reference and release resources. |
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202 // in all other cases if the camera indexes are same, it means that camera reference |
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203 // is already created and hence we can return immediately. |
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204 if (cameraIndex == mCameraIndex) { |
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205 CX_DEBUG_EXIT_FUNCTION(); |
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206 return CxeError::None; |
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207 } |
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208 |
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209 releaseCurrentCamera(); |
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210 |
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211 CxeError::Id err = mCameraDevice->newCamera(cameraIndex, this); |
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212 |
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213 if (err == CxeError::None){ |
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214 // CCamera object created, so make sure that appropriate index is used |
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215 mCameraIndex = cameraIndex; |
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216 } |
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217 |
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218 if (!err) { // if there is no error creating new camera, then start Reserve |
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219 reserve(); |
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220 } |
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221 |
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222 CX_DEBUG_EXIT_FUNCTION(); |
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223 return err; |
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224 } |
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225 |
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226 void CxeCameraDeviceControlSymbian::release() |
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227 { |
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228 CX_DEBUG_ENTER_FUNCTION(); |
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229 |
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230 if (state() == Idle) { |
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231 // nothing to do |
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232 return; |
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233 } |
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234 |
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235 if (state() == Initializing) { |
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236 setState(PendingRelease); |
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237 } else { |
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238 mCameraDevice->releaseCamera(); |
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239 setState(Idle); |
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240 } |
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241 |
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242 CX_DEBUG_EXIT_FUNCTION(); |
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243 } |
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244 |
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245 /* |
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246 * Release resources w.r.t current camera |
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247 */ |
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248 void CxeCameraDeviceControlSymbian::releaseCurrentCamera() |
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249 { |
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250 CX_DEBUG_ENTER_FUNCTION(); |
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251 |
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252 release(); |
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253 // delete old camera instance, this will inturn generates "prepareForCameraDelete" event |
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254 // across all interested classes which wants to do cleanup for new camera reference change |
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255 mCameraDevice->deleteCamera(); |
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256 |
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257 CX_DEBUG_EXIT_FUNCTION(); |
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258 } |
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259 |
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260 void CxeCameraDeviceControlSymbian::ViewFinderReady(MCameraBuffer &aCameraBuffer, TInt aError) |
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261 { |
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262 CX_DEBUG_ENTER_FUNCTION(); |
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263 emit vfFrameReady(&aCameraBuffer, aError); |
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264 CX_DEBUG_EXIT_FUNCTION(); |
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265 } |
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266 |
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267 void CxeCameraDeviceControlSymbian::ImageBufferReady(MCameraBuffer& aCameraBuffer, TInt aError) |
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268 { |
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269 CX_DEBUG_ENTER_FUNCTION(); |
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270 |
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271 emit imageBufferReady( &aCameraBuffer, aError ); |
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272 |
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273 CX_DEBUG_EXIT_FUNCTION(); |
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274 } |
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275 |
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276 void CxeCameraDeviceControlSymbian::VideoBufferReady(MCameraBuffer &/*aCameraBuffer*/, TInt /*aError*/) |
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277 { |
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278 CX_DEBUG_IN_FUNCTION(); |
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279 } |
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280 |
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281 Cxe::CameraIndex CxeCameraDeviceControlSymbian::cameraIndex() const |
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282 { |
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283 return mCameraIndex; |
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284 } |
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285 |
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286 Cxe::CameraMode CxeCameraDeviceControlSymbian::mode() const |
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287 { |
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288 return mCameraMode; |
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289 } |
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290 |
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291 void CxeCameraDeviceControlSymbian::setMode(Cxe::CameraMode mode) |
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292 { |
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293 mCameraMode = mode; |
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294 } |
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295 |
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296 CxeCameraDeviceControl::State CxeCameraDeviceControlSymbian::state() const |
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297 { |
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298 return static_cast<State>(stateId()); |
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299 } |
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300 |
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301 void CxeCameraDeviceControlSymbian::handleStateChanged(int newStateId, CxeError::Id error) |
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302 { |
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303 emit stateChanged(static_cast<State>(newStateId), error); |
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304 } |
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305 |
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306 void CxeCameraDeviceControlSymbian::initializeStates() |
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307 { |
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308 // addState( id, name, allowed next states ) |
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309 addState(new CxeState( Idle , "Idle", Initializing)); |
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310 addState(new CxeState( Initializing, "Initializing", PendingRelease | Ready | Idle)); |
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311 addState(new CxeState( Ready, "Ready", Idle)); |
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312 addState(new CxeState( PendingRelease, "PendingRelease", Initializing | Idle)); |
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313 |
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314 setInitialState(Idle); |
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315 } |
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316 |
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317 CxeCameraDevice *CxeCameraDeviceControlSymbian::cameraDevice() |
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318 { |
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319 return mCameraDevice; |
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320 } |
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321 |
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322 // end of file |