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1 /* |
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2 * Copyright (c) 2006-2009 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: Composer image active object |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include <e32msgqueue.h> |
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20 |
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21 #include "mdeobject.h" |
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22 #include "mdeobjectquery.h" |
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23 #include "harvesterexifutil.h" |
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24 #include "mdeharvestersession.h" |
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25 |
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26 #ifndef __CIMAGECOMPOSERAO_H__ |
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27 #define __CIMAGECOMPOSERAO_H__ |
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28 |
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29 _LIT( KImageComposerPanic, "CImageComposerAO" ); |
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30 |
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31 class CMdERelationQuery; |
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32 |
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33 class CImageComposerAO : public CActive, public MMdEQueryObserver |
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34 { |
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35 public: |
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36 |
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37 enum TRequestType |
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38 { |
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39 ERequestReady = 0, |
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40 ERequestGetObject, |
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41 ERequestCompose |
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42 }; |
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43 |
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44 /** |
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45 * Construction |
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46 */ |
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47 static CImageComposerAO* NewL(); |
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48 |
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49 /** |
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50 * Destruction |
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51 */ |
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52 virtual ~CImageComposerAO(); |
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53 |
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54 /** |
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55 * Adds new item to composing queue. |
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56 * @param aItems Items to add to the queue. |
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57 * @param aForce Force composing to items in aItems array |
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58 */ |
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59 void AddToQueue( const RArray<TItemId>& aItems, TBool aForce ); |
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60 |
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61 /** |
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62 * Checks if composing is completed. |
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63 * @return ETrue, if complete. |
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64 */ |
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65 TBool IsComposingComplete(); |
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66 |
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67 /** |
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68 * Sets mde client session to be used by this composer. |
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69 * @param aSession Mde client session. |
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70 */ |
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71 void SetSession( CMdESession* aSession ); |
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72 |
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73 /** |
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74 * Remove MdE client session used by this composer. |
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75 */ |
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76 void RemoveSession(); |
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77 |
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78 /** |
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79 * Writes location data to Exif. |
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80 * @param aMdeObject Mde object of the image. |
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81 * @param aLocationObject Related mde location object. |
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82 */ |
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83 void DoWriteExifL( CMdEObject* aMdEObject, CMdEObject* aLocationObject ); |
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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 |
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89 public: // from MMdEQueryObserver |
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90 |
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91 /** |
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92 * Callback to handle new results received from a query. |
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93 * From MMdEQueryObserver. |
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94 */ |
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95 virtual void HandleQueryNewResults( CMdEQuery& aQuery, TInt aFirstNewItemIndex, |
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96 TInt aNewItemCount ); |
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97 |
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98 /** |
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99 * Callback to handle new results received from a query. |
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100 * From MMdEQueryObserver. |
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101 */ |
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102 virtual void HandleQueryNewResults( CMdEQuery& aQuery, TInt aNewObjectItemCount, |
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103 TInt aNewRelationItemCount, TInt aNewEventItemCount ); |
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104 |
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105 /** |
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106 * Callback to handle all results of a completed query. |
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107 * From MMdEQueryObserver. |
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108 * @param aQuery Completed query |
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109 * @param aError Error code, KErrNone on success. |
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110 */ |
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111 virtual void HandleQueryCompleted( CMdEQuery& aQuery, TInt aError ); |
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112 |
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113 protected: |
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114 |
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115 /** |
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116 * RunL |
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117 * From CActive. |
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118 */ |
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119 virtual void RunL(); |
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120 |
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121 /** |
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122 * DoCancel |
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123 * From CActive. |
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124 */ |
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125 virtual void DoCancel(); |
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126 |
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127 /** |
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128 * RunError. Error handler in case RunL() leaves. |
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129 * From CActive. |
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130 * @param aError Leave code from RunL. |
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131 * @return Error code. KErrNone if error was handled. |
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132 */ |
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133 virtual TInt RunError( TInt aError ); |
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134 |
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135 private: |
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136 |
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137 /** |
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138 * Private constructor |
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139 */ |
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140 CImageComposerAO(); |
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141 |
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142 /** |
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143 * 2nd phase construction |
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144 */ |
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145 void ConstructL(); // second-phase constructor |
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146 |
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147 /** |
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148 * Gets an object from MdE DB. |
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149 * Leave on queue errors. |
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150 * Leaves with KErrNotFound, if object is not found. |
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151 * |
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152 * @param Returned value of current composing request's object ID. |
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153 * Value is changed when item is read from composing queue. |
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154 */ |
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155 void GetObjectFromMdeL(TItemId& aMdEObjectId); |
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156 |
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157 /** |
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158 * Writes (=composes) new metadata to a image file. |
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159 */ |
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160 void ComposeL(); |
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161 |
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162 /** |
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163 * SetNextRequest |
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164 * Sets next state for this active object's RunL. |
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165 * @param aNextRequest State to set. |
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166 */ |
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167 void SetNextRequest( TRequestType aNextRequest ); |
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168 |
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169 /** |
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170 * @brief Starts the write of GPS tags to a image file. |
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171 * |
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172 * Starts a query to search for related location data in mde. |
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173 * If found, HandleQueryCompleted will start adding found info |
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174 * to image file. |
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175 * |
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176 * @param aObjectId Object to whichs add GPS tags. |
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177 * |
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178 * @see HandleQueryCompleted |
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179 * @see StartWritingGPSTagsL |
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180 * @see DoWriteExifL |
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181 */ |
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182 void WriteGPSTagsL( TItemId aObjectId ); |
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183 |
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184 /** |
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185 * Checks if given mime type is JPEG image. |
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186 * @param aMimeType a mime type string. |
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187 * @return ETrue if mime type is image/jpeg. |
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188 */ |
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189 static TBool IsJpeg( const TDesC& aMimeType ); |
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190 |
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191 |
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192 /** |
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193 * Starts writing GPS tags to image file. |
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194 * @param aQuery Mde query which contains results for related |
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195 * location object query. |
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196 */ |
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197 void StartWritingGPSTagsL( CMdEQuery& aQuery ); |
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198 |
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199 /** |
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200 * Converts a TDateTime object's date to a Exif GPS date string. |
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201 * |
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202 * @param aTime TDateTime object to extract the date from. |
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203 * @param aTgtDes Target descriptor for the string. |
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204 */ |
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205 void TimeToGpsDateStringL( TTime aTime, TDes& aTgtDes ); |
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206 |
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207 /** |
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208 * Converts a TTime object's time to a Exif GPS time string. |
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209 * |
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210 * @param aTime TDateTime object to extract the time from. |
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211 * @param aTgtDes Target descriptor for the string. |
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212 */ |
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213 void TimeToGpsTimeStringL( TDateTime aTime, TDes8& aTgtDes ); |
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214 |
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215 |
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216 /** |
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217 * CompareItemIds |
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218 */ |
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219 static TInt CompareTItemIds( const TItemId& aLeft, const TItemId& aRight ) |
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220 { |
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221 return aLeft - aRight; |
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222 } |
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223 |
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224 private: |
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225 |
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226 /** Pointer to a mde object */ |
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227 CMdEObject* iMdeObject; |
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228 |
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229 /** Pointer to mde session to use */ |
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230 CMdESession* iSession; |
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231 |
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232 CMdEHarvesterSession* iMdEHarvesterSession; |
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233 |
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234 /** Next state of this active object's RunL() */ |
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235 TRequestType iNextRequest; |
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236 |
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237 /** Queue of items to compose */ |
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238 RArray<TItemId> iItemQueue; |
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239 |
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240 /** A relation query used to seach for related location objects */ |
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241 CMdERelationQuery* iRelationQuery; |
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242 |
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243 /** Mde default namespace. NOT OWN. */ |
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244 CMdENamespaceDef* iDefaultNamespace; |
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245 |
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246 /** Image Object Def. NOT OWN. */ |
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247 CMdEObjectDef* iImageObjectDef; |
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248 |
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249 /** "Base" Object Def. NOT OWN. */ |
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250 CMdEObjectDef* iObjectDef; |
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251 |
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252 /** Location Object Def. NOT OWN. */ |
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253 CMdEObjectDef* iLocationObjectDef; |
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254 |
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255 /** |
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256 * Array used to skip new coming id after explicit change of |
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257 * MdE object in composer. |
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258 */ |
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259 RArray<TItemId> iNextItemsSkip; |
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260 |
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261 /** |
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262 * Array of item id's which will be forced to be composed |
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263 * No timestamp checking will be done for these objects |
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264 */ |
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265 RArray<TItemId> iForceObjectIds; |
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266 |
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267 CHarvesterExifUtil* iExifUtil; |
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268 |
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269 RFs iFs; |
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270 }; |
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271 |
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272 #endif // __CIMAGECOMPOSERAO_H__ |