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1 /* |
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2 * Copyright (c) 2006 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: Active object to extract metadata |
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15 * Version : %version: da1mmcf#16.2.3.1.5 % |
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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 <e32base.h> |
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21 #include <f32file.h> |
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22 #include <badesca.h> |
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23 #include <apgcli.h> |
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24 #include <mpxmedia.h> |
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25 #include <mpxmediaarray.h> |
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26 #include <mpxcollectionpath.h> |
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27 #include <mpxcollectiontype.h> |
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28 #include <mpxdrmmediautility.h> |
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29 #include <mpxlog.h> |
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30 #include <mpxmetadataextractor.h> |
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31 #include "mpxmetadatascanner.h" |
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32 #include "mpxmetadatascanobserver.h" |
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33 #include "mpxfilescanstateobserver.h" |
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34 |
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35 // CONSTANTS |
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36 const TInt KLoopCount = 10; |
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37 |
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38 // ======== MEMBER FUNCTIONS ======== |
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39 |
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40 // --------------------------------------------------------------------------- |
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41 // Private Constructor |
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42 // --------------------------------------------------------------------------- |
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43 // |
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44 CMPXMetadataScanner::CMPXMetadataScanner( MMPXMetadataScanObserver& aObs, |
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45 MMPXFileScanStateObserver& aStateObs ) |
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46 : CActive( EPriorityNull ), |
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47 iObserver( aObs ), |
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48 iStateObserver( aStateObs ) |
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49 { |
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50 CActiveScheduler::Add( this ); |
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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 // 2nd Phase Constructor |
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56 // --------------------------------------------------------------------------- |
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57 // |
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58 void CMPXMetadataScanner::ConstructL( RFs& aFs, |
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59 RApaLsSession& aAppArc, |
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60 RPointerArray<CMPXCollectionType>& aTypesAry ) |
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61 { |
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62 iExtractor = CMPXMetadataExtractor::NewL( aFs, aAppArc, aTypesAry ); |
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63 iNewFileProps = CMPXMediaArray::NewL(); |
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64 iModifiedFileProps = CMPXMediaArray::NewL(); |
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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 // Two-Phased Constructor |
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70 // --------------------------------------------------------------------------- |
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71 // |
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72 CMPXMetadataScanner* CMPXMetadataScanner::NewL( RFs& aFs, |
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73 RApaLsSession& aAppArc, |
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74 RPointerArray<CMPXCollectionType>& aTypesAry, |
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75 MMPXMetadataScanObserver& aObs, |
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76 MMPXFileScanStateObserver& aStateObs ) |
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77 { |
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78 CMPXMetadataScanner* self = CMPXMetadataScanner::NewLC( aFs, |
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79 aAppArc, |
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80 aTypesAry, |
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81 aObs, |
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82 aStateObs ); |
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83 CleanupStack::Pop( self ); |
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84 return self; |
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85 } |
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86 |
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87 |
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88 // --------------------------------------------------------------------------- |
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89 // Two-Phased Constructor |
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90 // --------------------------------------------------------------------------- |
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91 // |
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92 CMPXMetadataScanner* CMPXMetadataScanner::NewLC( RFs& aFs, |
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93 RApaLsSession& aAppArc, |
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94 RPointerArray<CMPXCollectionType>& aTypesAry, |
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95 MMPXMetadataScanObserver& aObs, |
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96 MMPXFileScanStateObserver& aStateObs ) |
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97 { |
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98 CMPXMetadataScanner* self = new( ELeave ) CMPXMetadataScanner( aObs, |
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99 aStateObs ); |
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100 CleanupStack::PushL( self ); |
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101 self->ConstructL( aFs, aAppArc, aTypesAry ); |
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102 return self; |
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103 } |
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104 |
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105 |
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106 // --------------------------------------------------------------------------- |
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107 // Virtual Destructor |
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108 // --------------------------------------------------------------------------- |
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109 // |
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110 CMPXMetadataScanner::~CMPXMetadataScanner() |
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111 { |
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112 Cancel(); |
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113 Reset(); |
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114 iNewFiles.Close(); |
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115 iModifiedFiles.Close(); |
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116 |
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117 delete iNewFileProps; |
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118 delete iModifiedFileProps; |
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119 |
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120 delete iExtractor; |
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121 } |
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122 |
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123 // --------------------------------------------------------------------------- |
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124 // Resets this object |
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125 // --------------------------------------------------------------------------- |
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126 // |
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127 void CMPXMetadataScanner::Reset() |
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128 { |
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129 iNewFiles.ResetAndDestroy(); |
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130 iModifiedFiles.ResetAndDestroy(); |
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131 if(iNewFileProps) |
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132 { |
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133 iNewFileProps->Reset(); |
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134 } |
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135 if(iModifiedFileProps) |
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136 { |
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137 iModifiedFileProps->Reset(); |
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138 } |
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139 } |
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140 |
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141 // --------------------------------------------------------------------------- |
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142 // Starts the metadata extraction process |
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143 // --------------------------------------------------------------------------- |
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144 // |
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145 void CMPXMetadataScanner::Start() |
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146 { |
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147 MPX_DEBUG1("MPXMetadataScanner::StartL <---"); |
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148 if( !IsActive() ) |
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149 { |
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150 // Setup |
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151 iAryPos = 0; |
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152 iExtractType = ENewFiles; |
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153 iExtracting = ETrue; |
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154 |
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155 // Set Active |
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156 iStatus = KRequestPending; |
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157 SetActive(); |
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158 TRequestStatus* status = &iStatus; |
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159 User::RequestComplete( status, KErrNone ); |
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160 MPX_DEBUG1("MPXMetadataScanner::StartL --->"); |
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161 } |
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162 } |
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163 // --------------------------------------------------------------------------- |
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164 // Stops the metadata extraction process |
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165 // --------------------------------------------------------------------------- |
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166 // |
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167 void CMPXMetadataScanner::Stop() |
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168 { |
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169 MPX_DEBUG1("MPXMetadataScanner::Stop <---"); |
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170 DoCancel(); |
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171 MPX_DEBUG1("MPXMetadataScanner::Stop --->"); |
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172 } |
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173 |
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174 // --------------------------------------------------------------------------- |
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175 // Add a file to the scanning list |
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176 // --------------------------------------------------------------------------- |
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177 // |
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178 void CMPXMetadataScanner::AddNewFileToScanL( const TDesC& aFile ) |
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179 { |
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180 HBufC* file = aFile.AllocLC(); |
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181 iNewFiles.AppendL( file ); |
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182 CleanupStack::Pop( file ); |
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183 } |
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184 |
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185 // --------------------------------------------------------------------------- |
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186 // Add a file to the modified list |
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187 // --------------------------------------------------------------------------- |
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188 // |
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189 void CMPXMetadataScanner::AddModifiedFileToScanL( const TDesC& aFile ) |
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190 { |
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191 HBufC* file = aFile.AllocLC(); |
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192 iModifiedFiles.AppendL( file ); |
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193 CleanupStack::Pop( file ); |
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194 } |
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195 |
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196 // --------------------------------------------------------------------------- |
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197 // Extract media properties for a file |
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198 // --------------------------------------------------------------------------- |
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199 // |
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200 CMPXMedia* CMPXMetadataScanner::ExtractFileL( const TDesC& aFile ) |
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201 { |
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202 CMPXMedia* media; |
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203 iExtractor->CreateMediaL( aFile, media ); |
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204 return media; |
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205 } |
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206 |
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207 // --------------------------------------------------------------------------- |
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208 // Cancel the operation |
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209 // --------------------------------------------------------------------------- |
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210 // |
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211 void CMPXMetadataScanner::DoCancel() |
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212 { |
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213 if( iExtracting ) |
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214 { |
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215 // Callback to observer |
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216 Reset(); |
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217 TRAP_IGNORE( iStateObserver.HandleScanStateCompleteL( MMPXFileScanStateObserver::EScanMetadata, |
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218 KErrCancel ) ); |
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219 iExtracting = EFalse; |
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220 } |
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221 } |
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222 |
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223 // --------------------------------------------------------------------------- |
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224 // RunL function |
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225 // --------------------------------------------------------------------------- |
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226 // |
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227 void CMPXMetadataScanner::RunL() |
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228 { |
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229 if ( iExtracting ) |
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230 { |
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231 TBool done(EFalse); |
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232 TRAPD( err, done = DoExtractL() ); |
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233 if ( !iExtracting ) |
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234 { |
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235 // If DoCancel() was called during DoExtractL(), do nothing. |
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236 MPX_DEBUG1("CMPXMetadataScanner::RunL - Cancel during RunL"); |
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237 } |
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238 else if( KErrNone != err || done ) |
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239 { |
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240 // Callback to observer |
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241 TRAP_IGNORE( iStateObserver.HandleScanStateCompleteL( MMPXFileScanStateObserver::EScanMetadata, |
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242 err ) ); |
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243 iExtracting = EFalse; |
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244 } |
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245 else |
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246 { |
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247 MPX_DEBUG1("CMPXMetadataScanner::RunL -- Run again"); |
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248 iStatus = KRequestPending; |
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249 SetActive(); |
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250 TRequestStatus* status = &iStatus; |
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251 User::RequestComplete( status, KErrNone ); |
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252 } |
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253 } |
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254 } |
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255 |
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256 // --------------------------------------------------------------------------- |
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257 // Extract metadata |
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258 // --------------------------------------------------------------------------- |
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259 // |
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260 TBool CMPXMetadataScanner::DoExtractL() |
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261 { |
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262 MPX_DEBUG1("CMPXMetadataScanner::DoExtractL <---"); |
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263 TBool done(EFalse); |
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264 TExtractType curType = (TExtractType) iExtractType; |
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265 |
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266 // Pointer re-direction to generalize extraction |
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267 RPointerArray<HBufC>* source; |
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268 CMPXMediaArray* mptarget; |
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269 if( curType == ENewFiles ) |
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270 { |
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271 source = &iNewFiles; |
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272 mptarget = iNewFileProps; |
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273 } |
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274 else if( curType == EModFiles ) |
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275 { |
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276 source = &iModifiedFiles; |
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277 mptarget = iModifiedFileProps; |
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278 } |
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279 else // All done! |
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280 { |
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281 return ETrue; |
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282 } |
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283 |
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284 // Process at most KLoopCount number of files |
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285 // |
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286 mptarget->Reset(); |
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287 if( source->Count() != 0 ) |
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288 { |
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289 for( TInt i=0; i<KLoopCount; ++i ) |
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290 { |
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291 CMPXMedia* media(NULL); |
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292 |
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293 // TRAP to keep scanning if 1 file fails |
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294 TRAPD( err, iExtractor->CreateMediaL( *(*source)[iAryPos], media ) ); |
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295 if ( !iExtracting ) |
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296 { |
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297 // In case DoCancel() was called while processing iExtractor->CreateMediaL |
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298 MPX_DEBUG1("CMPXMetadataScanner::DoExtractL - Cancel during CreateMediaL"); |
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299 delete media; |
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300 return ETrue; |
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301 } |
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302 |
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303 if( err == KErrNone ) |
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304 { |
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305 CleanupStack::PushL( media ); |
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306 mptarget->AppendL( media ); |
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307 CleanupStack::Pop( media ); |
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308 } |
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309 |
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310 iAryPos++; |
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311 if( iAryPos == source->Count() ) |
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312 { |
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313 iAryPos = 0; |
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314 iExtractType++; |
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315 break; |
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316 } |
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317 } |
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318 } |
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319 else // No item in the array |
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320 { |
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321 iAryPos = 0; |
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322 iExtractType++; |
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323 } |
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324 |
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325 // After extraction, get observer to add files to the collection |
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326 // |
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327 switch( curType ) |
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328 { |
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329 case ENewFiles: |
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330 { |
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331 if( iNewFileProps->Count() ) |
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332 { |
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333 iObserver.AddFilesToCollectionL( *iNewFileProps ); |
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334 } |
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335 break; |
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336 } |
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337 case EModFiles: |
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338 { |
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339 if( iModifiedFileProps->Count() ) |
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340 { |
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341 iObserver.UpdatesFilesInCollectionL( *iModifiedFileProps ); |
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342 } |
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343 break; |
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344 } |
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345 case EMaxFile: // All done. |
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346 done = ETrue; |
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347 break; |
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348 default: |
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349 ASSERT(0); |
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350 } |
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351 |
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352 MPX_DEBUG1("CMPXMetadataScanner::DoExtractL --->"); |
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353 return done; |
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354 } |