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1 /* |
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2 * Copyright (c) 2005-2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * Provides Phonebook2 image reader class methods. |
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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 FILES |
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21 #include "CPbk2ImageReader.h" |
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22 |
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23 // From Phonebook2 |
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24 #include "MPbk2ImageReaderObserver.h" |
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25 #include "TPbk2ImageManagerParams.h" |
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26 #include "Pbk2PresentationUtils.h" |
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27 |
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28 // From Virtual Phonebook |
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29 |
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30 // From System |
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31 #include <imageconversion.h> |
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32 #include <bitmaptransforms.h> |
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33 #include <JP2KUids.hrh> |
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34 #include <aknnotewrappers.h> |
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35 #include <StringLoader.h> |
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36 #include <AknIconUtils.h> |
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37 |
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38 /// Unnamed namespace for local defintions |
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39 namespace { |
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40 |
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41 // ============== LOCAL CONSTANTS AND MACROS =============== |
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42 |
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43 enum TReaderState |
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44 { |
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45 EStateIntialize = 0, |
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46 EStateOpenImage, |
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47 EStateConvertImageToBitmap, |
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48 EStateScaleBitmap, |
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49 EStateComplete, |
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50 EStateCancelled |
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51 }; |
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52 |
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53 // Definition for max mime type length |
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54 const TInt KMaxMimeTypeLength(256); |
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55 |
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56 #ifdef _DEBUG |
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57 enum TPanicCode |
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58 { |
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59 EPanicPreCond_ConvertImageToBitmapL = 1, |
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60 EPanicPreCond_ScaleBitmapL, |
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61 EPanicPreCond_Complete, |
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62 EPanicPostCond_Complete, |
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63 EPanicPostCond_OptimalLoadingSize |
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64 }; |
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65 #endif // _DEBUG |
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66 |
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67 |
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68 // ==================== LOCAL FUNCTIONS ==================== |
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69 |
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70 #ifdef _DEBUG |
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71 void Panic(TPanicCode aPanicCode) |
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72 { |
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73 _LIT(KPanicText, "CPbk2ImageReader"); |
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74 User::Panic(KPanicText, aPanicCode); |
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75 } |
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76 #endif // _DEBUG |
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77 |
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78 // -------------------------------------------------------------------------- |
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79 |
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80 /** |
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81 * Comparison operator for TSize objects. Compares width and height members. |
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82 * |
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83 * @param aLhs Reference to left hand side TSize |
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84 * @param aRhs Reference to right hand side TSize |
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85 * @return ETrue if lhs's width and height are less or equal to rhs's |
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86 * width and height. Otherwise returns EFalse. |
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87 */ |
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88 inline TBool operator<=(const TSize& aLhs, const TSize& aRhs) |
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89 { |
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90 return (aLhs.iWidth<=aRhs.iWidth && aLhs.iHeight<=aRhs.iHeight); |
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91 } |
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92 |
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93 /** |
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94 * Ceils division result based on modulus. |
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95 * |
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96 * @param aVal Divident. |
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97 * @param aDiv Divider. |
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98 * @return If modulus is zero, returns the result of aVal / aDiv. Otherwise |
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99 * returns returns the result of aVal / aDiv increased by one. |
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100 * |
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101 * NOTE: Copied from CPalbBitmap, remove when possible |
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102 */ |
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103 TInt Ceil(const TInt aVal, const TInt aDiv) |
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104 { |
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105 return (((aVal%aDiv)>0) ? (TInt)((aVal/aDiv)+1):(TInt)(aVal/aDiv)); |
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106 } |
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107 |
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108 /** |
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109 * Calculates the the size based on divider. Uses Ceil function for ceiling |
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110 * the calculated size. |
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111 * |
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112 * @param aSize Orginal size. |
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113 * @param aDiv Divider. |
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114 * @return Calculated size. The result's width and height might be adjusted |
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115 * according to the results of calling Ceil function. |
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116 * |
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117 * @see Ceil |
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118 * |
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119 * NOTE: Copied from CPalbBitmap, remove when possible |
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120 */ |
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121 TSize SizeDividedByValueAndCeil(const TSize& aSize, const TInt aDiv) |
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122 { |
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123 return TSize( |
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124 Ceil( aSize.iWidth, aDiv), |
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125 Ceil( aSize.iHeight, aDiv) ); |
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126 } |
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127 |
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128 /** |
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129 * Calculates the optimal loading size. If optimal loading size cannot be |
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130 * calculated, function panics with |
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131 * CPbk2ImageReader:EPanicPostCond_OptimalLoadingSize panic code. |
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132 * |
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133 * @param aOriginalSize Orginal size. |
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134 * @param aNeededSize Needed size. |
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135 * @return Calculated optimal size. |
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136 * |
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137 * @see SizeDividedByValueAndCeil |
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138 * @see Ceil |
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139 * |
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140 * NOTE: Copied from CPalbBitmap, remove when possible |
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141 */ |
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142 TSize OptimalLoadingSize(const TSize& aOriginalSize, const TSize& aNeededSize) |
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143 { |
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144 TSize resSize = SizeDividedByValueAndCeil( aOriginalSize, 8 ); |
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145 if( !(aNeededSize <= resSize) ) |
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146 { |
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147 resSize = SizeDividedByValueAndCeil( aOriginalSize, 4 ); |
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148 if( !(aNeededSize <= resSize) ) |
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149 { |
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150 resSize = SizeDividedByValueAndCeil( aOriginalSize, 2 ); |
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151 if( !(aNeededSize <= resSize) ) |
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152 { |
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153 resSize = aOriginalSize; |
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154 } |
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155 } |
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156 } |
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157 |
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158 // if the resulting size is not the original size, |
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159 // it has to be between needed size and original size |
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160 __ASSERT_DEBUG(resSize == aOriginalSize |
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161 || (aNeededSize <= resSize && resSize <= aOriginalSize), |
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162 Panic(EPanicPostCond_OptimalLoadingSize)); |
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163 |
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164 return resSize; |
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165 } |
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166 } // namespace |
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167 |
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168 |
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169 // ================= MEMBER FUNCTIONS ======================= |
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170 |
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171 // -------------------------------------------------------------------------- |
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172 // CPbk2ImageReader::CPbk2ImageReader |
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173 // -------------------------------------------------------------------------- |
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174 // |
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175 inline CPbk2ImageReader::CPbk2ImageReader |
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176 (MPbk2ImageReaderObserver& aObserver) : |
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177 CActive(CActive::EPriorityStandard), |
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178 iObserver(aObserver) |
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179 { |
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180 CActiveScheduler::Add(this); |
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181 } |
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182 |
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183 // -------------------------------------------------------------------------- |
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184 // CPbk2ImageReader::~CPbk2ImageReader |
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185 // -------------------------------------------------------------------------- |
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186 // |
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187 CPbk2ImageReader::~CPbk2ImageReader() |
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188 { |
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189 Cancel(); |
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190 delete iBitmapScaler; |
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191 delete iImageDecoder; |
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192 delete iMimeString; |
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193 delete iBitmap; |
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194 iFsSession.Close(); |
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195 } |
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196 |
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197 // -------------------------------------------------------------------------- |
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198 // CPbk2ImageReader::NewL |
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199 // -------------------------------------------------------------------------- |
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200 // |
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201 CPbk2ImageReader* CPbk2ImageReader::NewL |
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202 (MPbk2ImageReaderObserver& aObserver) |
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203 { |
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204 CPbk2ImageReader* self = new(ELeave) CPbk2ImageReader(aObserver); |
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205 CleanupStack::PushL(self); |
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206 self->ConstructL(); |
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207 CleanupStack::Pop(self); |
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208 return self; |
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209 } |
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210 |
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211 // -------------------------------------------------------------------------- |
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212 // CPbk2ImageReader::ConstructL |
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213 // -------------------------------------------------------------------------- |
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214 // |
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215 void CPbk2ImageReader::ConstructL() |
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216 { |
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217 User::LeaveIfError(iFsSession.Connect()); |
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218 } |
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219 |
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220 // -------------------------------------------------------------------------- |
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221 // CPbk2ImageReader::ReadFromFileL |
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222 // -------------------------------------------------------------------------- |
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223 // |
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224 void CPbk2ImageReader::ReadFromFileL |
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225 (const TDesC& aFileName, const TPbk2ImageManagerParams* aParams) |
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226 { |
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227 InitReadL(aParams); |
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228 delete iImageDecoder; |
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229 iImageDecoder = NULL; |
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230 |
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231 TRAPD( err, iImageDecoder = CImageDecoder::FileNewL( iFsSession, aFileName ) ); |
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232 |
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233 // Make the open phase asynchronous as well by signaling own iStatus |
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234 iState = EStateOpenImage; |
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235 TRequestStatus* status = &iStatus; |
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236 User::RequestComplete( status, err ); |
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237 SetActive(); |
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238 } |
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239 |
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240 // -------------------------------------------------------------------------- |
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241 // CPbk2ImageReader::ReadFromBufferL |
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242 // -------------------------------------------------------------------------- |
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243 // |
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244 void CPbk2ImageReader::ReadFromBufferL |
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245 (const TDesC8& aBuffer, const TPbk2ImageManagerParams* aParams/*=NULL*/) |
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246 { |
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247 InitReadL(aParams); |
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248 delete iImageDecoder; |
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249 iImageDecoder = NULL; |
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250 TRAPD( err, iImageDecoder = CImageDecoder::DataNewL( iFsSession, aBuffer ) ); |
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251 |
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252 // Make the open phase asynchronous as well by signaling own iStatus |
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253 iState = EStateOpenImage; |
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254 TRequestStatus* status = &iStatus; |
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255 User::RequestComplete( status, err ); |
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256 SetActive(); |
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257 } |
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258 |
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259 // -------------------------------------------------------------------------- |
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260 // CPbk2ImageReader::MimeString |
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261 // -------------------------------------------------------------------------- |
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262 // |
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263 const TDesC8& CPbk2ImageReader::MimeString() const |
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264 { |
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265 if (iMimeString) |
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266 { |
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267 return *iMimeString; |
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268 } |
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269 else |
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270 { |
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271 return KNullDesC8; |
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272 } |
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273 } |
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274 |
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275 // -------------------------------------------------------------------------- |
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276 // CPbk2ImageReader::RecognizeFormatFromFileL |
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277 // -------------------------------------------------------------------------- |
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278 // |
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279 void CPbk2ImageReader::RecognizeFormatFromFileL(const TDesC& aFileName) |
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280 { |
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281 delete iMimeString; |
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282 iMimeString = NULL; |
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283 iMimeString = HBufC8::NewL(KMaxMimeTypeLength); |
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284 TPtr8 mimePtr = iMimeString->Des(); |
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285 |
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286 TRAPD( err, CImageDecoder::GetMimeTypeFileL( iFsSession, aFileName, mimePtr ) ); |
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287 |
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288 if( err != KErrNone ) |
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289 { |
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290 iObserver.ImageReadFailed( *this, err ); |
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291 } |
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292 } |
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293 |
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294 // -------------------------------------------------------------------------- |
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295 // CPbk2ImageReader::RecognizeFormatFromBufferL |
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296 // -------------------------------------------------------------------------- |
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297 // |
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298 void CPbk2ImageReader::RecognizeFormatFromBufferL(const TDesC8& aBuffer) |
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299 { |
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300 delete iMimeString; |
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301 iMimeString = NULL; |
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302 iMimeString = HBufC8::NewL(KMaxMimeTypeLength); |
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303 TPtr8 mimePtr = iMimeString->Des(); |
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304 TRAPD( err, CImageDecoder::GetMimeTypeDataL( aBuffer, mimePtr ) ); |
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305 |
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306 if( err != KErrNone ) |
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307 { |
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308 iObserver.ImageReadFailed( *this, err ); |
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309 } |
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310 } |
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311 |
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312 // -------------------------------------------------------------------------- |
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313 // CPbk2ImageReader::FrameInfo |
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314 // -------------------------------------------------------------------------- |
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315 // |
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316 void CPbk2ImageReader::FrameInfo(TInt aFrame, TFrameInfo& aInfo) const |
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317 { |
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318 aInfo = iImageDecoder->FrameInfo(aFrame); |
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319 } |
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320 |
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321 // -------------------------------------------------------------------------- |
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322 // CPbk2ImageReader::FrameCount |
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323 // -------------------------------------------------------------------------- |
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324 // |
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325 TInt CPbk2ImageReader::FrameCount() const |
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326 { |
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327 return iImageDecoder->FrameCount(); |
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328 } |
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329 |
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330 // -------------------------------------------------------------------------- |
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331 // CPbk2ImageReader::NextStateL |
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332 // -------------------------------------------------------------------------- |
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333 // |
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334 void CPbk2ImageReader::NextStateL() |
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335 { |
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336 ++iState; |
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337 |
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338 switch (iState) |
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339 { |
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340 case EStateConvertImageToBitmap: |
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341 { |
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342 ConvertImageToBitmapL(); |
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343 break; |
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344 } |
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345 case EStateScaleBitmap: |
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346 { |
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347 CropImageToSquareL(); |
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348 ScaleBitmapL(); |
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349 break; |
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350 } |
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351 case EStateComplete: |
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352 { |
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353 Complete(); |
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354 break; |
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355 } |
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356 default: |
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357 { |
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358 // iImageReader might sometimes complete although it has been canceled. |
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359 // Catch those cases here. |
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360 break; |
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361 } |
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362 } |
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363 } |
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364 |
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365 // -------------------------------------------------------------------------- |
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366 // CPbk2ImageReader::ConvertImageToBitmapL |
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367 // -------------------------------------------------------------------------- |
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368 // |
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369 void CPbk2ImageReader::ConvertImageToBitmapL() |
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370 { |
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371 __ASSERT_DEBUG(iImageDecoder && !iBitmap, |
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372 Panic(EPanicPreCond_ConvertImageToBitmapL)); |
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373 |
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374 // Get image size |
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375 const TFrameInfo& frameInfo = |
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376 iImageDecoder->FrameInfo(iParams.iFrameNumber); |
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377 TSize bitmapSize = frameInfo.iOverallSizeInPixels; |
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378 if (iParams.iFlags & TPbk2ImageManagerParams::EScaleImage) |
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379 { |
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380 // Get optimal loading size >= desired size |
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381 bitmapSize = OptimalLoadingSize(bitmapSize,iParams.iSize); |
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382 } |
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383 |
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384 // Create bitmap |
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385 delete iBitmap; |
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386 iBitmap = NULL; |
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387 iBitmap = new(ELeave) CFbsBitmap; |
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388 User::LeaveIfError(iBitmap->Create(bitmapSize, iParams.iDisplayMode)); |
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389 |
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390 // Convert image to bitmap |
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391 iImageDecoder->Convert(&iStatus, *iBitmap, iParams.iFrameNumber); |
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392 SetActive(); |
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393 } |
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394 |
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395 // -------------------------------------------------------------------------- |
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396 // CPbk2ImageReader::CropImageToSquareL |
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397 // -------------------------------------------------------------------------- |
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398 // |
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399 void CPbk2ImageReader::CropImageToSquareL() |
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400 { |
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401 // if cropping is wanted |
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402 if( iParams.iFlags & TPbk2ImageManagerParams::ECropImage ) |
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403 { |
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404 Pbk2PresentationImageUtils::CropImageL( |
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405 *iBitmap, |
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406 Pbk2PresentationImageUtils::EOptimizedCropping, |
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407 iParams.iSize ); |
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408 } |
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409 } |
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410 |
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411 // -------------------------------------------------------------------------- |
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412 // CPbk2ImageReader::ScaleBitmapL |
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413 // -------------------------------------------------------------------------- |
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414 // |
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415 void CPbk2ImageReader::ScaleBitmapL() |
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416 { |
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417 __ASSERT_DEBUG(iBitmap, Panic(EPanicPreCond_ScaleBitmapL)); |
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418 |
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419 const TSize bitmapSize = iBitmap->SizeInPixels(); |
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420 if ((iParams.iFlags & TPbk2ImageManagerParams::EScaleImage) && |
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421 !(iParams.iFlags & TPbk2ImageManagerParams::EUseFastScaling) && |
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422 (iParams.iFlags & TPbk2ImageManagerParams::EUseSpeedOptimizedScaling) && |
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423 ( bitmapSize.iHeight == bitmapSize.iWidth ) ) |
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424 { |
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425 if( bitmapSize.iWidth > iParams.iSize.iWidth || |
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426 bitmapSize.iHeight > iParams.iSize.iHeight ) |
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427 { |
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428 // Use avkon scaler |
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429 TRect targetRect(TPoint(0,0), |
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430 TSize( ( iParams.iSize.iWidth ), |
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431 ( iParams.iSize.iHeight ) ) ); |
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432 |
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433 CFbsBitmap* target = new( ELeave ) CFbsBitmap; |
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434 CleanupStack::PushL( target ); |
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435 User::LeaveIfError( target->Create( |
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436 targetRect.Size(), iBitmap->DisplayMode() ) ); |
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437 |
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438 AknIconUtils::ScaleBitmapL( targetRect, target, iBitmap ); |
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439 |
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440 iBitmap->Reset(); |
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441 User::LeaveIfError( iBitmap->Duplicate( target->Handle() ) ); |
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442 CleanupStack::PopAndDestroy( target ); |
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443 |
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444 NextStateL(); |
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445 return; |
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446 } |
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447 } |
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448 else if ((iParams.iFlags & TPbk2ImageManagerParams::EScaleImage) && |
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449 !(iParams.iFlags & TPbk2ImageManagerParams::EUseFastScaling) ) |
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450 { |
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451 if (bitmapSize.iWidth > iParams.iSize.iWidth || |
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452 bitmapSize.iHeight > iParams.iSize.iHeight) |
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453 { |
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454 if (!iBitmapScaler) |
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455 { |
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456 iBitmapScaler = CBitmapScaler::NewL(); |
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457 } |
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458 iBitmapScaler->Scale(&iStatus, *iBitmap, iParams.iSize); |
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459 SetActive(); |
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460 return; |
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461 } |
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462 } |
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463 |
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464 // No scaling requested or needed, go directly to next state |
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465 NextStateL(); |
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466 } |
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467 |
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468 // -------------------------------------------------------------------------- |
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469 // CPbk2ImageReader::Complete |
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470 // -------------------------------------------------------------------------- |
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471 // |
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472 void CPbk2ImageReader::Complete() |
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473 { |
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474 __ASSERT_DEBUG(iImageDecoder && iBitmap, Panic(EPanicPreCond_Complete)); |
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475 |
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476 // End state machine |
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477 ++iState; |
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478 |
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479 // Close the image source |
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480 CloseImage(); |
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481 |
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482 // Release ownership of iBitmap |
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483 CFbsBitmap* bitmap = iBitmap; |
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484 iBitmap = NULL; |
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485 |
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486 __ASSERT_DEBUG(!iImageDecoder && !iBitmap, |
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487 Panic(EPanicPostCond_Complete)); |
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488 |
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489 // Notify observer about completion |
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490 iObserver.ImageReadComplete(*this,bitmap); |
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491 } |
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492 |
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493 // -------------------------------------------------------------------------- |
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494 // CPbk2ImageReader::InitReadL |
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495 // -------------------------------------------------------------------------- |
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496 // |
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497 void CPbk2ImageReader::InitReadL(const TPbk2ImageManagerParams* aParams) |
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498 { |
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499 Cancel(); |
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500 if (aParams) |
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501 { |
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502 iParams = *aParams; |
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503 } |
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504 iState = EStateOpenImage; |
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505 } |
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506 |
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507 // -------------------------------------------------------------------------- |
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508 // CPbk2ImageReader::CloseImage |
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509 // -------------------------------------------------------------------------- |
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510 // |
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511 void CPbk2ImageReader::CloseImage() |
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512 { |
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513 delete iImageDecoder; |
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514 iImageDecoder = NULL; |
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515 } |
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516 |
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517 // -------------------------------------------------------------------------- |
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518 // CPbk2ImageReader::RunL |
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519 // -------------------------------------------------------------------------- |
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520 // |
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521 void CPbk2ImageReader::RunL() |
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522 { |
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523 TInt status = iStatus.Int(); |
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524 |
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525 switch (status) |
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526 { |
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527 case KErrNone: |
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528 { |
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529 if (iState == EStateOpenImage) |
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530 { |
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531 iObserver.ImageOpenComplete(*this); |
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532 } |
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533 NextStateL(); |
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534 break; |
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535 } |
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536 case KErrCancel: |
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537 { |
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538 // In case of cancel the observer is not signaled |
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539 break; |
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540 } |
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541 default: |
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542 { |
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543 // Jpeg2000 decoder might need more heap than Phonebook can |
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544 // provide, the situation is handled so, that "Feature not |
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545 // supported" -note is shown if memory runs out when decoding |
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546 // Jpeg2000 image instead of "Out of memory" -note. |
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547 // |
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548 // Small jp2 images (e.g. 50*50 pixels) can be decoded, but |
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549 // heap runs out when decoding e.g. 1 mega pixel image. |
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550 // |
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551 // Increasing phonebook heap size doesn't help on this issue, |
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552 // since jp2 decoder heap usage is increased linearly when a bigger |
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553 // image is tried to be decoded. |
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554 if ( status == KErrNoMemory ) |
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555 { |
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556 |
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557 TUid imageType; |
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558 TUid imageSubType; |
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559 iImageDecoder->ImageType(iParams.iFrameNumber, |
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560 imageType, |
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561 imageSubType); |
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562 |
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563 if ( imageType.iUid == KImageTypeJ2KUid ) |
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564 { |
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565 status = KErrNotSupported; |
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566 } |
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567 } |
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568 |
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569 iObserver.ImageReadFailed(*this, status); |
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570 break; |
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571 } |
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572 } |
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573 } |
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574 |
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575 // -------------------------------------------------------------------------- |
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576 // CPbk2ImageReader::Cancel |
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577 // -------------------------------------------------------------------------- |
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578 // |
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579 void CPbk2ImageReader::Cancel() |
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580 { |
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581 if (!IsActive()) |
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582 { |
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583 DoCancel(); |
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584 } |
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585 else |
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586 { |
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587 CActive::Cancel(); |
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588 } |
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589 } |
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590 |
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591 // -------------------------------------------------------------------------- |
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592 // CPbk2ImageReader::RunError |
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593 // -------------------------------------------------------------------------- |
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594 // |
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595 TInt CPbk2ImageReader::RunError(TInt aError) |
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596 { |
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597 iObserver.ImageReadFailed(*this, aError); |
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598 return KErrNone; |
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599 } |
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600 |
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601 // -------------------------------------------------------------------------- |
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602 // CPbk2ImageReader::DoCancel |
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603 // -------------------------------------------------------------------------- |
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604 // |
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605 void CPbk2ImageReader::DoCancel() |
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606 { |
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607 if (iImageDecoder) |
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608 { |
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609 iImageDecoder->Cancel(); |
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610 } |
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611 if (iBitmapScaler) |
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612 { |
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613 iBitmapScaler->Cancel(); |
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614 } |
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615 CloseImage(); |
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616 delete iBitmap; |
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617 iBitmap = NULL; |
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618 iState = EStateCancelled; |
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619 } |
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620 |
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621 // End of File |