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1 /* |
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2 * Copyright (c) 2010 Ixonos Plc. |
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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 the "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 * Ixonos Plc |
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14 * |
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15 * Description: |
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16 * Base class for data processor objects. |
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17 * |
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18 */ |
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19 |
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20 |
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21 |
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22 // EXTERNAL RESOURCES |
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23 |
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24 |
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25 // Include Files |
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26 |
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27 #include "dataprocessor.h" |
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28 |
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29 |
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30 |
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31 |
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32 // MEMBER FUNCTIONS |
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33 |
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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 |
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41 CDataProcessor |
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42 |
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43 CDataProcessor() |
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44 |
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45 Standard C++ constructor |
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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 CDataProcessor::CDataProcessor(TInt aPriority) |
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51 : CActive(aPriority) |
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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 /* |
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58 ----------------------------------------------------------------------------- |
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59 |
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60 CDataProcessor |
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61 |
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62 ~CDataProcessor() |
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63 |
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64 Standard C++ destructor |
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65 |
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66 ----------------------------------------------------------------------------- |
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67 */ |
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68 |
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69 CDataProcessor::~CDataProcessor() |
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70 { |
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71 Cancel(); |
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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 ----------------------------------------------------------------------------- |
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78 |
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79 CDataProcessor |
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80 |
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81 ConstructL() |
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82 |
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83 Standard Symbian OS second-phase constructor |
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84 |
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85 ----------------------------------------------------------------------------- |
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86 */ |
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87 |
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88 void CDataProcessor::ConstructL() |
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89 { |
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90 // Add to active scheduler and activate |
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91 CActiveScheduler::Add(this); |
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92 SetActive(); |
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93 iStatus = KRequestPending; |
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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 ----------------------------------------------------------------------------- |
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100 |
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101 CDataProcessor |
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102 |
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103 InputDataAvailable() |
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104 |
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105 Called by CActiveQueue when input data is available, simply signals the |
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106 object |
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107 |
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108 ----------------------------------------------------------------------------- |
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109 */ |
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110 |
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111 void CDataProcessor::InputDataAvailable(TAny* /*aUserPointer*/) |
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112 { |
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113 if ( iStatus == KRequestPending ) |
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114 { |
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115 TRequestStatus *status = &iStatus; |
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116 User::RequestComplete(status, KErrNone); |
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117 } |
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118 } |
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119 |
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120 |
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121 |
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122 /* |
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123 ----------------------------------------------------------------------------- |
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124 |
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125 CDataProcessor |
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126 |
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127 OutputSpaceAvailable() |
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128 |
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129 Called by CActiveQueue when output space is available, simply signals the |
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130 object |
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131 |
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132 ----------------------------------------------------------------------------- |
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133 */ |
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134 |
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135 void CDataProcessor::OutputSpaceAvailable(TAny* /*aUserPointer*/) |
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136 { |
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137 |
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138 if ( iStatus == KRequestPending ) |
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139 { |
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140 TRequestStatus *status = &iStatus; |
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141 User::RequestComplete(status, KErrNone); |
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142 } |
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143 |
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144 |
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145 } |
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146 |
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147 |
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148 |
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149 /* |
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150 ----------------------------------------------------------------------------- |
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151 |
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152 CDataProcessor |
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153 |
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154 StreamEndReached() |
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155 |
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156 Called by CActiveQeueue after all data has been read from a queue where |
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157 stream end has been signaled. Does nothing in this base class. |
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158 |
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159 ----------------------------------------------------------------------------- |
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160 */ |
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161 |
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162 void CDataProcessor::StreamEndReached(TAny* /*aUserPointer*/) |
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163 { |
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164 } |
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165 |
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166 |
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167 |
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168 /* |
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169 ----------------------------------------------------------------------------- |
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170 |
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171 CDataProcessor |
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172 |
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173 DoCancel() |
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174 |
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175 Cancels the internal request. |
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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 void CDataProcessor::DoCancel() |
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181 { |
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182 if ( iStatus == KRequestPending ) |
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183 { |
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184 TRequestStatus *status = &iStatus; |
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185 User::RequestComplete(status, KErrCancel); |
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186 } |
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187 } |
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188 |
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189 |
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190 // End of File |