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1 /* |
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2 * Copyright (c) 2006-2008 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: CSensrvDataHandler implementation |
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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 |
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20 #include "sensrvdatahandler.h" |
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21 #include "sensrvtrace.h" |
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22 #include "sensrvdatahandlerobserver.h" |
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23 #include "sensrvdefines.h" |
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24 |
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25 |
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26 |
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27 // ======== MEMBER FUNCTIONS ======== |
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28 |
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29 // --------------------------------------------------------------------------- |
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30 // C++ constructor |
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31 // --------------------------------------------------------------------------- |
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32 // |
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33 |
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34 CSensrvDataHandler::CSensrvDataHandler( RSensrvClient& aSensrvClient, |
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35 const TSensrvChannelInfo& aChannelInfo ) |
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36 : CActive( EPriorityStandard ), |
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37 iSensrvClient( aSensrvClient ), |
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38 iChannelInfo( aChannelInfo ) |
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39 { |
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40 |
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41 CActiveScheduler::Add( this ); |
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42 |
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43 } |
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44 |
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45 |
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46 // --------------------------------------------------------------------------- |
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47 // 2nd phase of construction |
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48 // --------------------------------------------------------------------------- |
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49 // |
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50 void CSensrvDataHandler::ConstructL() |
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51 { |
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52 |
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53 } |
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54 |
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55 |
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56 // --------------------------------------------------------------------------- |
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57 // 2-phase constructor |
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58 // --------------------------------------------------------------------------- |
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59 // |
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60 CSensrvDataHandler* CSensrvDataHandler::NewL( RSensrvClient& aSensrvClient, |
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61 const TSensrvChannelInfo& aChannelInfo ) |
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62 { |
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63 CSensrvDataHandler* self = CSensrvDataHandler::NewLC( aSensrvClient, aChannelInfo ); |
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64 CleanupStack::Pop( self ); |
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65 return self; |
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66 } |
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67 |
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68 |
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69 // --------------------------------------------------------------------------- |
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70 // 2-phase constructor |
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71 // --------------------------------------------------------------------------- |
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72 // |
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73 CSensrvDataHandler* CSensrvDataHandler::NewLC( RSensrvClient& aSensrvClient, |
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74 const TSensrvChannelInfo& aChannelInfo ) |
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75 { |
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76 CSensrvDataHandler* self = new( ELeave ) CSensrvDataHandler( aSensrvClient, aChannelInfo ); |
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77 CleanupStack::PushL( self ); |
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78 self->ConstructL(); |
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79 return self; |
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80 } |
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81 |
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82 |
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83 // --------------------------------------------------------------------------- |
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84 // Destructor |
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85 // --------------------------------------------------------------------------- |
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86 // |
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87 CSensrvDataHandler::~CSensrvDataHandler() |
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88 { |
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89 Cancel(); |
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90 delete iWriteBuffer; |
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91 delete iWriteBufferPtr; |
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92 delete iReadBuffer; |
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93 } |
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94 |
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95 |
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96 |
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97 |
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98 // --------------------------------------------------------------------------- |
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99 // From class CActive |
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100 // --------------------------------------------------------------------------- |
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101 // |
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102 void CSensrvDataHandler::DoCancel() |
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103 { |
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104 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::DoCancel()" ) ) ); |
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105 |
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106 iSensrvClient.SendReceiveSync( ESensrvSrvReqStopListening, |
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107 TIpcArgs( iChannelInfo.iChannelId ) ); |
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108 |
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109 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::DoCancel - return void" ) ) ); |
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110 } |
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111 |
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112 // --------------------------------------------------------------------------- |
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113 // From class CActive |
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114 // --------------------------------------------------------------------------- |
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115 // |
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116 void CSensrvDataHandler::RunL() |
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117 { |
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118 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::RunL - iStatus %d" ), iStatus.Int() ) ); |
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119 |
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120 Deque(); |
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121 CActiveScheduler::Add(this); |
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122 if( iStatus.Int() == KErrNone ) |
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123 { |
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124 if( iErrorCount > 0 ) |
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125 { |
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126 iErrorCount = 0; |
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127 } |
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128 HBufC8* temp = iReadBuffer; |
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129 iReadBuffer = iWriteBuffer; |
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130 iWriteBuffer = temp; |
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131 |
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132 TSensrvAsyncChannelDataCountsRetval dataCounts = iDataCountsPckgBuf(); |
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133 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::RunL - DataItemCount = %d, DataLostCount = %d "), dataCounts.iDataItemCount, dataCounts.iDataLostCount ) ); |
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134 TInt lostCount( dataCounts.iDataLostCount ); |
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135 lostCount += ( iReadBufferCount - iGetDataCount ); |
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136 |
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137 // Reset buffer counts |
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138 iReadBufferCount = dataCounts.iDataItemCount; |
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139 iGetDataCount = 0; |
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140 |
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141 CreateAndSendRequest(); |
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142 |
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143 // Notify to listener |
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144 iDataObserver->DataReceived( iReadBufferCount, lostCount ); |
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145 |
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146 } |
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147 else |
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148 { |
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149 if( iErrorCount == 0 ) |
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150 { |
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151 iErrorCount++; |
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152 CreateAndSendRequest(); |
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153 |
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154 // Send minor error |
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155 iDataObserver->DataError( ESensrvErrorSeverityMinor ); |
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156 |
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157 } |
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158 else if( iErrorCount == 1 ) |
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159 { |
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160 iErrorCount++; |
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161 // Reopen channel |
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162 |
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163 TInt maxBufferCount(0); |
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164 iDataObserver->ReopenChannelForDataListeningL( maxBufferCount ); |
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165 |
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166 TSensrvStartListeningParametersPckgBuf startListeningPckg( iListeningParameters ); |
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167 |
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168 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::RunL - Restart listening - iDesiredBufferingCount = %d, iMaximumBufferingCount = %d, iBufferingPeriod = %d "), |
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169 iListeningParameters.iDesiredBufferingCount, |
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170 iListeningParameters.iMaximumBufferingCount, |
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171 iListeningParameters.iBufferingPeriod ) ); |
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172 |
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173 |
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174 TInt err = iSensrvClient.SendReceiveSync( ESensrvSrvReqStartListening, |
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175 TIpcArgs( iChannelInfo.iChannelId, &startListeningPckg ) ); |
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176 if( err ) |
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177 { |
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178 // send fatal error |
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179 iDataObserver->DataError( ESensrvErrorSeverityFatal ); |
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180 } |
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181 else |
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182 { |
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183 TInt newMaxSize( maxBufferCount * iChannelInfo.iDataItemSize ); |
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184 if( iWriteBuffer->Length() > newMaxSize ) |
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185 { |
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186 iWriteBuffer->ReAllocL( newMaxSize ); |
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187 iReadBuffer->ReAllocL( newMaxSize ); |
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188 delete iWriteBufferPtr; |
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189 iWriteBufferPtr = NULL; |
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190 iWriteBufferPtr = new (ELeave) TPtr8( const_cast<TUint8*>( iWriteBuffer->Des().Ptr() ), newMaxSize ); |
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191 } |
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192 // Start listening |
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193 CreateAndSendRequest(); |
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194 } |
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195 } |
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196 else |
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197 { |
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198 // send fatal error |
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199 iDataObserver->DataError( ESensrvErrorSeverityFatal ); |
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200 } |
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201 |
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202 } |
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203 |
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204 } |
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205 |
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206 // --------------------------------------------------------------------------- |
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207 // CSensrvDataHandler::RunError |
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208 // --------------------------------------------------------------------------- |
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209 // |
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210 TInt CSensrvDataHandler::RunError( TInt /*aError*/ ) |
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211 { |
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212 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::RunError" ) ) ); |
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213 // send fatal error |
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214 iDataObserver->DataError( ESensrvErrorSeverityFatal ); |
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215 return KErrNone; |
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216 } |
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217 |
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218 |
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219 // --------------------------------------------------------------------------- |
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220 // CSensrvDataHandler::StartListening |
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221 // --------------------------------------------------------------------------- |
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222 // |
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223 void CSensrvDataHandler::StartListeningL( MSensrvDataHandlerObserver* aDataObserver, |
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224 TSensrvStartListeningParameters aListeningParameters, |
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225 TInt aMaxBufferCount ) |
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226 { |
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227 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::StartListening - Start" ) ) ); |
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228 |
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229 if( IsActive() ) |
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230 { |
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231 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::StartListening - Return" ) ) ); |
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232 return; |
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233 } |
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234 |
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235 iDataObserver = aDataObserver; |
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236 iListeningParameters = aListeningParameters; |
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237 |
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238 iErrorCount = 0; |
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239 |
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240 TInt size = iListeningParameters.iMaximumBufferingCount * iChannelInfo.iDataItemSize; |
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241 |
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242 // Check size |
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243 if( size <= 0 || iListeningParameters.iMaximumBufferingCount > ( KMaxTInt / iChannelInfo.iDataItemSize ) |
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244 || iListeningParameters.iMaximumBufferingCount < iListeningParameters.iDesiredBufferingCount |
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245 || iListeningParameters.iMaximumBufferingCount > aMaxBufferCount ) |
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246 { |
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247 size = aMaxBufferCount * iChannelInfo.iDataItemSize; |
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248 } |
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249 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::StartListening - bufferSize: %d" ), size ) ); |
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250 delete iWriteBuffer; |
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251 iWriteBuffer = NULL; |
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252 iWriteBuffer = HBufC8::NewL( size ); |
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253 delete iReadBuffer; |
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254 iReadBuffer = NULL; |
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255 iReadBuffer = HBufC8::NewL( size ); |
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256 |
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257 delete iWriteBufferPtr; |
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258 iWriteBufferPtr = NULL; |
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259 iWriteBufferPtr = new (ELeave) TPtr8( const_cast<TUint8*>( iWriteBuffer->Des().Ptr() ), size ); |
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260 |
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261 |
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262 CreateAndSendRequest(); |
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263 |
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264 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::StartListening - Return" ) ) ); |
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265 } |
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266 |
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267 // --------------------------------------------------------------------------- |
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268 // CSensrvDataHandler::GetData |
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269 // --------------------------------------------------------------------------- |
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270 // |
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271 TInt CSensrvDataHandler::GetData( TDes8& aDataPtr ) |
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272 { |
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273 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::GetData - Start" ) ) ); |
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274 TInt err( KErrNone ); |
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275 |
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276 if( aDataPtr.Length() < iChannelInfo.iDataItemSize ) |
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277 { |
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278 // aDataPtr is too small |
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279 err = KErrOverflow; |
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280 } |
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281 else if( iGetDataCount >= iReadBufferCount || !iReadBuffer ) |
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282 { |
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283 // data not found. |
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284 err = KErrNotFound; |
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285 } |
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286 else |
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287 { |
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288 // set data |
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289 TUint8* ptr = const_cast<TUint8*>( iReadBuffer->Des().Ptr() ); |
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290 ptr += ( iGetDataCount * iChannelInfo.iDataItemSize ); |
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291 |
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292 aDataPtr.Copy( ptr, iChannelInfo.iDataItemSize ); |
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293 ++iGetDataCount; |
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294 } |
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295 |
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296 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::GetData - Return %d" ), err ) ); |
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297 return err; |
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298 } |
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299 |
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300 // --------------------------------------------------------------------------- |
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301 // CSensrvDataHandler::CreateAndSendRequestL |
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302 // --------------------------------------------------------------------------- |
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303 // |
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304 void CSensrvDataHandler::CreateAndSendRequest() |
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305 { |
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306 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::CreateAndSendRequestL - Start" ) ) ); |
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307 |
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308 iWriteBufferPtr->Set( iWriteBuffer->Des() ); |
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309 |
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310 iSensrvClient.SendReceiveAsync( ESensrvSrvReqAsyncChannelData, |
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311 TIpcArgs( iChannelInfo.iChannelId, iWriteBufferPtr, &iDataCountsPckgBuf ), iStatus ); |
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312 |
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313 SetActive(); |
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314 |
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315 COMPONENT_TRACE( ( _L( "Sensrv Client - CSensrvDataHandler::CreateAndSendRequestL - Return" ) ) ); |
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316 } |
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317 |