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1 /* |
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2 * Copyright (c) 2006-2007 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 * Unified Message Editor - Combined image scaler & compressor |
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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 |
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21 // INCLUDE FILES |
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22 #include "UniImageProcessor.h" |
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23 |
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24 #include <imageconversion.h> |
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25 #include <bitmaptransforms.h> |
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26 |
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27 #include <MsgMimeTypes.h> |
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28 |
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29 #include "UniEditorLogging.h" |
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30 |
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31 |
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32 // ========================================================== |
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33 |
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34 // EXTERNAL DATA STRUCTURES |
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35 |
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36 // EXTERNAL FUNCTION PROTOTYPES |
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37 |
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38 // CONSTANTS |
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39 |
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40 // MACROS |
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41 |
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42 // LOCAL CONSTANTS AND MACROS |
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43 |
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44 // JPEG quality factor related constants: |
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45 const TInt KHighQualityMaxWidth = 640; |
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46 const TInt KHighQualityMaxHeight = 480; |
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47 const TInt KJpegQualityFactorHigh = 80; |
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48 const TInt KJpegQualityFactorNormal = 65; |
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49 |
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50 // MPix factor is relative to this value |
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51 // 3MPix: Initial factor 2/3 * Qfactor calculated above |
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52 // 5MPix: 2/5* |
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53 // 8MPix: 2/8* |
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54 const TReal KQFMPixfactor( 1600*1200 ); |
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55 |
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56 // Count of compressing/scaling efforts |
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57 const TInt KIterationCount( 3 ); |
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58 |
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59 const TInt KMPixfactorMin = 1; |
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60 const TInt KMPixfactorMax = 5; |
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61 const TInt KMPixSizeDivider = 4; |
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62 |
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63 // When compressing next QFactor is QFactor * (value from table) / 100 |
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64 const TInt KPercentCoefficientsCounts[KMPixfactorMax][KIterationCount] = |
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65 { { 60, 30, 10 }, |
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66 { 40, 15, 3 }, |
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67 { 25, 10, 2 }, |
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68 { 12, 4, 0 }, |
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69 { 5, 2, 0 } |
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70 }; |
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71 |
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72 // MODULE DATA STRUCTURES |
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73 |
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74 // LOCAL FUNCTION PROTOTYPES |
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75 |
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76 // ================= MEMBER FUNCTIONS ======================= |
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77 |
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78 // --------------------------------------------------------- |
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79 // CUniImageProcessor::CUniImageProcessor |
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80 // |
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81 // Constructor. |
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82 // --------------------------------------------------------- |
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83 // |
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84 EXPORT_C CUniImageProcessor::CUniImageProcessor( MUniImageProcessorCallback* aCallback ) : |
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85 CActive( EPriorityStandard ), |
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86 iCallback( aCallback ), |
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87 iMPixFactor ( KMPixfactorMin ) |
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88 { |
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89 CActiveScheduler::Add( this ); |
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90 } |
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91 |
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92 // --------------------------------------------------------- |
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93 // CUniImageProcessor::~CUniImageProcessor |
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94 // |
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95 // Destructor |
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96 // --------------------------------------------------------- |
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97 // |
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98 CUniImageProcessor::~CUniImageProcessor() |
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99 { |
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100 Cancel(); |
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101 Reset(); |
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102 } |
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103 |
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104 // --------------------------------------------------------- |
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105 // CUniImageProcessor::ProcessImageL |
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106 // |
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107 // --------------------------------------------------------- |
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108 // |
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109 EXPORT_C void CUniImageProcessor::ProcessImageL( |
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110 RFile& aSourceFile, |
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111 RFile& aDestFile, |
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112 TSize& aTargetSize, |
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113 const TDesC8& aTargetType, |
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114 TBool aAspectRatio, |
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115 TInt aTargetFileSize ) |
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116 { |
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117 UNILOGGER_ENTERFN( "CUniImageProcessor: file-to-file scaling" ); |
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118 |
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119 if ( iDecoder || iScaler || iEncoder ) |
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120 { |
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121 User::Leave( KErrInUse ); |
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122 } |
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123 |
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124 iError = KErrNone; |
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125 iFlags &= ~ECompressOnly; |
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126 if ( aTargetType.CompareF( KMsgMimeImageJpeg ) == 0 ) |
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127 { |
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128 iCompressTriesLeft = KIterationCount; |
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129 User::LeaveIfError( aSourceFile.Size( iOriginalFileSize ) ); |
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130 // Make sure the resulting image won't be larger than the original |
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131 if ( !aTargetFileSize || iOriginalFileSize < aTargetFileSize ) |
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132 { |
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133 aTargetFileSize = iOriginalFileSize; |
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134 iFlags |= EImplicitCompress; |
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135 } |
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136 iTargetFileSize = aTargetFileSize; |
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137 } |
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138 else |
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139 { |
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140 iCompressTriesLeft = 0; |
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141 iTargetFileSize = 0; |
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142 iOriginalFileSize = 0; |
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143 } |
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144 |
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145 iQFactorCalculated = EFalse; |
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146 iMPixFactor = KMPixfactorMin; |
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147 iDestFile = &aDestFile; |
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148 iAspectRatio = aAspectRatio; |
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149 iDecoder = CImageDecoder::FileNewL( aSourceFile, ContentAccess::EPeek ); |
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150 iEncoder = CImageEncoder::FileNewL( aDestFile, aTargetType ); |
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151 |
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152 const TFrameInfo& frameInfo = iDecoder->FrameInfo(); |
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153 |
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154 TSize decodeSize( frameInfo.iOverallSizeInPixels ); |
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155 if ( !CalculateDecodeAndTargetSizes( aTargetSize, decodeSize, aAspectRatio ) ) |
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156 { |
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157 // use bitmap plane scale |
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158 iScaler = CBitmapScaler::NewL(); |
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159 iSourceBitmap = new ( ELeave ) CFbsBitmap; |
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160 iFlags |= ESourceBitmapOwned; |
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161 User::LeaveIfError( iSourceBitmap->Create( |
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162 decodeSize, |
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163 frameInfo.iFrameDisplayMode ) ); |
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164 } |
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165 |
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166 iDestBitmap = new ( ELeave ) CFbsBitmap; |
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167 iFlags |= EDestBitmapOwned; |
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168 User::LeaveIfError( iDestBitmap->Create( |
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169 aTargetSize, |
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170 frameInfo.iFrameDisplayMode ) ); |
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171 |
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172 CreateImageDataL( aTargetType, aTargetSize ); |
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173 |
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174 DecodeImage(); |
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175 } |
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176 |
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177 // --------------------------------------------------------- |
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178 // CUniImageProcessor::ProcessImageL |
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179 // |
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180 // --------------------------------------------------------- |
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181 // |
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182 EXPORT_C void CUniImageProcessor::ScaleImageL( |
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183 CFbsBitmap* aSourceBitmap, |
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184 RFile& aDestFile, |
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185 const TSize& aTargetSize, |
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186 const TDesC8& aTargetType, |
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187 TBool aAspectRatio ) |
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188 { |
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189 UNILOGGER_ENTERFN( "CUniImageProcessor: bmp-to-file scaling" ); |
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190 if ( iDecoder || iScaler || iEncoder ) |
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191 { |
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192 User::Leave( KErrInUse ); |
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193 } |
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194 |
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195 iError = KErrNone; |
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196 iFlags &= ~ECompressOnly; |
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197 iCompressTriesLeft = 0; |
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198 iTargetFileSize = 0; |
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199 iOriginalFileSize = 0; |
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200 |
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201 iQFactorCalculated = EFalse; |
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202 iMPixFactor = KMPixfactorMin; |
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203 iDestFile = &aDestFile; |
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204 iAspectRatio = aAspectRatio; |
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205 iScaler = CBitmapScaler::NewL(); |
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206 iEncoder = CImageEncoder::FileNewL( aDestFile, aTargetType ); |
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207 |
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208 iSourceBitmap = aSourceBitmap; |
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209 |
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210 iDestBitmap = new ( ELeave ) CFbsBitmap; |
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211 iFlags |= EDestBitmapOwned; |
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212 TInt error = iDestBitmap->Create( |
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213 aTargetSize, |
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214 iSourceBitmap->DisplayMode() ); |
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215 User::LeaveIfError( error ); |
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216 |
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217 CreateImageDataL( aTargetType, aTargetSize ); |
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218 |
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219 ScaleImage( EFalse ); |
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220 } |
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221 |
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222 // --------------------------------------------------------- |
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223 // CUniImageProcessor::ScaleImageL |
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224 // |
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225 // --------------------------------------------------------- |
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226 // |
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227 EXPORT_C void CUniImageProcessor::ScaleImageL( |
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228 CFbsBitmap* aSourceBitmap, |
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229 CFbsBitmap* aDestBitmap, |
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230 TBool aAspectRatio ) |
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231 { |
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232 UNILOGGER_ENTERFN( "CUniImageProcessor: bmp-to-bmp scaling" ); |
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233 if ( iDecoder || iScaler || iEncoder ) |
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234 { |
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235 User::Leave( KErrInUse ); |
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236 } |
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237 |
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238 iError = KErrNone; |
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239 iFlags &= ~ECompressOnly; |
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240 iCompressTriesLeft = 0; |
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241 iTargetFileSize = 0; |
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242 iOriginalFileSize = 0; |
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243 |
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244 iAspectRatio = aAspectRatio; |
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245 iScaler = CBitmapScaler::NewL(); |
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246 |
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247 iSourceBitmap = aSourceBitmap; |
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248 iDestBitmap = aDestBitmap; |
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249 |
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250 ScaleImage( EFalse ); |
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251 } |
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252 |
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253 // --------------------------------------------------------- |
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254 // CUniImageProcessor::ScaleImageL |
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255 // |
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256 // --------------------------------------------------------- |
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257 // |
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258 EXPORT_C void CUniImageProcessor::ScaleImageL( |
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259 RFile& aSourceFile, |
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260 CFbsBitmap*& aDestBitmap, |
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261 CFbsBitmap*& aDestMask, |
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262 TSize& aTargetSize, |
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263 TBool aAspectRatio ) |
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264 { |
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265 UNILOGGER_ENTERFN( "CUniImageProcessor: file-to-bmp scaling" ); |
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266 if ( iDecoder || iScaler || iEncoder ) |
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267 { |
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268 User::Leave( KErrInUse ); |
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269 } |
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270 |
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271 iError = KErrNone; |
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272 iFlags &= ~ECompressOnly; |
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273 iCompressTriesLeft = 0; |
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274 iTargetFileSize = 0; |
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275 iOriginalFileSize = 0; |
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276 |
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277 iQFactorCalculated = EFalse; |
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278 iMPixFactor = KMPixfactorMin; |
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279 iAspectRatio = aAspectRatio; |
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280 iDecoder = CImageDecoder::FileNewL( aSourceFile, ContentAccess::EPeek ); |
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281 |
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282 const TFrameInfo& frameInfo = iDecoder->FrameInfo(); |
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283 |
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284 TSize decodeSize( frameInfo.iOverallSizeInPixels ); |
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285 TBool optimum = CalculateDecodeAndTargetSizes( aTargetSize, decodeSize, aAspectRatio ); |
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286 // Make sure "compress only flag is not set". |
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287 iFlags &= ~ECompressOnly; |
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288 |
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289 if ( !optimum ) |
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290 { |
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291 // use bitmap plane scale |
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292 iScaler = CBitmapScaler::NewL(); |
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293 iSourceBitmap = new ( ELeave ) CFbsBitmap; |
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294 iFlags |= ESourceBitmapOwned; |
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295 User::LeaveIfError( iSourceBitmap->Create( |
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296 decodeSize, |
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297 frameInfo.iFrameDisplayMode ) ); |
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298 } |
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299 |
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300 iDestBitmap = new ( ELeave ) CFbsBitmap; |
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301 iFlags |= EDestBitmapOwned; |
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302 User::LeaveIfError( iDestBitmap->Create( |
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303 aTargetSize, |
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304 frameInfo.iFrameDisplayMode ) ); |
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305 |
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306 if ( frameInfo.iFlags & TFrameInfo::ETransparencyPossible ) |
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307 { |
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308 if ( !optimum ) |
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309 { |
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310 iSourceMask = new ( ELeave ) CFbsBitmap; |
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311 iFlags |= ESourceMaskOwned; |
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312 User::LeaveIfError( iSourceMask->Create( |
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313 decodeSize, |
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314 frameInfo.iFlags & TFrameInfo::EAlphaChannel ? EGray256 : EGray2 ) ); |
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315 } |
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316 iDestMask = new ( ELeave ) CFbsBitmap; |
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317 iFlags |= EDestMaskOwned; |
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318 User::LeaveIfError( iDestMask->Create( |
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319 aTargetSize, |
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320 frameInfo.iFlags & TFrameInfo::EAlphaChannel ? EGray256 : EGray2 ) ); |
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321 delete aDestMask; // just in case |
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322 aDestMask = iDestMask; |
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323 } |
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324 else |
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325 { |
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326 delete aDestMask; // just in case |
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327 aDestMask = NULL; |
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328 } |
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329 |
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330 delete aDestBitmap; //just in case |
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331 aDestBitmap = iDestBitmap; |
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332 |
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333 iFlags &= ~EDestBitmapOwned; |
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334 iFlags &= ~EDestMaskOwned; |
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335 |
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336 DecodeImage(); |
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337 } |
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338 |
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339 // --------------------------------------------------------- |
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340 // CUniImageProcessor::CalculateDecodeAndTargetSizes |
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341 // |
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342 // --------------------------------------------------------- |
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343 // |
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344 TBool CUniImageProcessor::CalculateDecodeAndTargetSizes( |
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345 TSize& aTargetSize, |
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346 TSize& aDecodeSize, |
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347 TBool aAspectRatio ) |
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348 { |
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349 UNILOGGER_ENTERFN( "CUniImageProcessor: CalculateDecodeAndTargetSizes()" ); |
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350 |
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351 const TFrameInfo& frameInfo = iDecoder->FrameInfo(); |
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352 aDecodeSize = frameInfo.iOverallSizeInPixels; |
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353 |
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354 if ( aTargetSize.iWidth >= aDecodeSize.iWidth && |
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355 aTargetSize.iHeight >= aDecodeSize.iHeight && |
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356 !( iFlags & EAllowScalingUp ) ) |
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357 { |
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358 // No need to scale at all! |
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359 iFlags |= ECompressOnly; |
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360 aTargetSize = aDecodeSize; |
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361 return ETrue; |
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362 } |
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363 if ( aTargetSize == aDecodeSize ) |
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364 { |
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365 // No need to scale at all! |
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366 iFlags |= ECompressOnly; |
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367 return ETrue; |
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368 } |
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369 |
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370 if ( aAspectRatio ) |
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371 { |
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372 // Adjust target size if aspect ratio needs to be maintained. |
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373 TReal scaleRatio = CalculateScaleRatio( aTargetSize, aDecodeSize ); |
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374 aTargetSize.iHeight = scaleRatio * aDecodeSize.iHeight; |
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375 aTargetSize.iWidth = scaleRatio * aDecodeSize.iWidth; |
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376 } |
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377 |
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378 // Width or height should never be zero. |
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379 aTargetSize.iWidth = Max(aTargetSize.iWidth, 1); |
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380 aTargetSize.iHeight = Max(aTargetSize.iHeight, 1); |
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381 |
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382 TInt wRatio = aDecodeSize.iWidth / aTargetSize.iWidth; |
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383 TInt hRatio = aDecodeSize.iHeight / aTargetSize.iHeight; |
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384 |
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385 TBool decodeOnly( frameInfo.iFlags & TFrameInfo::EFullyScaleable ); |
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386 |
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387 if ( !decodeOnly && |
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388 !( aDecodeSize.iWidth % aTargetSize.iWidth || |
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389 aDecodeSize.iHeight % aTargetSize.iHeight || |
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390 wRatio != hRatio || |
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391 (wRatio != 2 && wRatio != 4 && wRatio != 8) || |
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392 (hRatio != 2 && hRatio != 4 && hRatio != 8) ) ) |
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393 { |
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394 decodeOnly = ETrue; |
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395 } |
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396 |
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397 if ( decodeOnly ) |
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398 { |
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399 // Decoding directly to requested target size. |
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400 aDecodeSize = aTargetSize; |
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401 } |
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402 else |
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403 { |
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404 TInt decodeFactor = 8; |
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405 while ( decodeFactor > 1 ) |
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406 { |
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407 if ( aDecodeSize.iWidth / decodeFactor >= aTargetSize.iWidth && |
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408 aDecodeSize.iHeight / decodeFactor >= aTargetSize.iHeight ) |
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409 { |
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410 // Smallest 1/2^n factor that creates image larger than target size |
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411 break; |
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412 } |
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413 decodeFactor /= 2; |
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414 } |
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415 if ( ( iFlags & EOnlyDecodeTimeScaling ) && decodeFactor < 8 ) |
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416 { |
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417 // Largest 1/2^n factor that creates image smaller than target size |
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418 decodeFactor *= 2; |
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419 decodeOnly = ETrue; |
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420 } |
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421 aDecodeSize.iWidth = ( aDecodeSize.iWidth + decodeFactor - 1 ) / decodeFactor; |
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422 aDecodeSize.iHeight = ( aDecodeSize.iHeight + decodeFactor - 1 ) / decodeFactor; |
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423 if ( decodeOnly ) |
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424 { |
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425 // Decoding to target size. Make sure target & decode sizes match. |
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426 // Target size may need to be changed was iOnlyDecodeTimeScaling is used. |
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427 aTargetSize = aDecodeSize; |
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428 } |
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429 } |
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430 return decodeOnly; |
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431 } |
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432 |
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433 |
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434 // --------------------------------------------------------- |
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435 // CUniImageProcessor::DecodeImage |
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436 // |
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437 // --------------------------------------------------------- |
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438 // |
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439 void CUniImageProcessor::DecodeImage() |
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440 { |
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441 UNILOGGER_ENTERFN( "CUniImageProcessor: DecodeImage()" ); |
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442 |
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443 iStatus = KRequestPending; |
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444 if ( iScaler ) |
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445 { |
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446 if ( iSourceMask ) |
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447 { |
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448 iDecoder->Convert( &iStatus, *iSourceBitmap, *iSourceMask ); |
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449 } |
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450 else |
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451 { |
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452 iDecoder->Convert( &iStatus, *iSourceBitmap ); |
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453 } |
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454 } |
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455 else |
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456 { |
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457 if ( iDestMask ) |
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458 { |
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459 iDecoder->Convert( &iStatus, *iDestBitmap, *iDestMask ); |
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460 } |
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461 else |
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462 { |
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463 iDecoder->Convert( &iStatus, *iDestBitmap ); |
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464 } |
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465 } |
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466 SetActive(); |
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467 } |
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468 |
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469 // --------------------------------------------------------- |
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470 // CUniImageProcessor::ScaleImage |
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471 // |
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472 // --------------------------------------------------------- |
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473 // |
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474 void CUniImageProcessor::ScaleImage( TBool aMask ) |
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475 { |
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476 UNILOGGER_ENTERFN( "CUniImageProcessor: ScaleImage()" ); |
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477 |
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478 iStatus = KRequestPending; |
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479 if ( aMask ) |
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480 { |
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481 iScaler->Scale( &iStatus, *iSourceMask, *iDestMask, iAspectRatio ); |
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482 } |
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483 else |
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484 { |
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485 iScaler->Scale( &iStatus, *iSourceBitmap, *iDestBitmap, iAspectRatio ); |
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486 } |
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487 SetActive(); |
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488 } |
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489 |
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490 // --------------------------------------------------------- |
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491 // CUniImageProcessor::EncodeImageL |
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492 // |
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493 // --------------------------------------------------------- |
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494 // |
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495 void CUniImageProcessor::EncodeImageL( TBool aCompressing ) |
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496 { |
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497 UNILOGGER_ENTERFN( "CUniImageProcessor: EncodeImageL()" ); |
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498 |
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499 if ( aCompressing ) |
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500 { |
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501 delete iEncoder; |
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502 iEncoder = NULL; |
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503 // Make sure that the file is empty. |
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504 User::LeaveIfError( iDestFile->SetSize( 0 ) ); |
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505 iEncoder = CImageEncoder::FileNewL( *iDestFile, KMsgMimeImageJpeg ); |
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506 } |
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507 iCompressTriesLeft--; |
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508 iStatus = KRequestPending; |
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509 iEncoder->Convert( &iStatus, *iDestBitmap, iFrameImageData ); |
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510 SetActive(); |
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511 } |
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512 |
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513 // --------------------------------------------------------- |
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514 // CUniImageProcessor::DoCancel |
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515 // |
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516 // --------------------------------------------------------- |
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517 // |
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518 void CUniImageProcessor::DoCancel() |
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519 { |
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520 UNILOGGER_ENTERFN( "CUniImageProcessor: DoCancel()" ); |
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521 if ( iDecoder ) |
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522 { |
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523 iDecoder->Cancel(); |
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524 } |
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525 if ( iScaler ) |
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526 { |
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527 iScaler->Cancel(); |
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528 } |
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529 if ( iEncoder ) |
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530 { |
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531 iEncoder->Cancel(); |
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532 } |
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533 |
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534 iError = KErrCancel; |
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535 iCallback->ImageProcessingReady( TSize(), 0, EFalse ); |
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536 } |
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537 |
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538 // --------------------------------------------------------- |
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539 // CUniImageProcessor::RunL |
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540 // |
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541 // --------------------------------------------------------- |
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542 // |
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543 void CUniImageProcessor::RunL() |
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544 { |
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545 UNILOGGER_ENTERFN( "CUniImageProcessor: RunL()" ); |
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546 UNILOGGER_WRITEF( _L("iStatus: %d"), iStatus.Int() ); |
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547 TSize size( 0, 0 ); |
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548 if ( iStatus < 0 ) |
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549 { |
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550 iError = iStatus.Int(); |
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551 } |
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552 if ( iError ) |
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553 { |
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554 UNILOGGER_WRITE( "Error occured. Scaling aborted." ); |
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555 TBool compressed( EFalse ); |
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556 if ( iTargetFileSize && |
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557 iCompressTriesLeft != KIterationCount && |
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558 !( iFlags & EImplicitCompress ) ) |
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559 { |
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560 compressed = ETrue; |
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561 } |
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562 Reset(); |
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563 iCallback->ImageProcessingReady( size, 0, compressed ); |
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564 } |
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565 else if ( iDecoder ) |
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566 { |
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567 delete iDecoder; |
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568 iDecoder = NULL; |
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569 if ( iScaler ) |
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570 { |
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571 if ( iSourceMask ) |
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572 { |
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573 //scale mask first |
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574 ScaleImage( ETrue ); |
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575 } |
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576 else |
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577 { |
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578 ScaleImage( EFalse ); |
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579 } |
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580 } |
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581 else if ( iEncoder ) |
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582 { |
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583 if ( iFlags & ECompressOnly ) |
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584 { |
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585 ResolveQFactorL(); |
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586 } |
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587 // In "compress only" case the "aCompressing" flag is |
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588 // EFalse for first time because we do not want |
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589 // to delete & recreate CImageEncoder unnecessarily. |
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590 EncodeImageL( EFalse ); |
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591 } |
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592 else |
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593 { |
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594 UNILOGGER_WRITE( "Scaling ready (no scaling nor endocing)." ); |
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595 size = iDestBitmap->SizeInPixels(); |
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596 Reset(); |
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597 iCallback->ImageProcessingReady( size, iResultFileSize, EFalse ); |
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598 } |
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599 } |
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600 else if ( iScaler ) |
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601 { |
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602 if ( iSourceMask ) |
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603 { |
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604 delete iSourceMask; |
|
605 iSourceMask = NULL; |
|
606 iFlags &= ~ESourceMaskOwned; |
|
607 //mask already scaled, scale bitmap |
|
608 ScaleImage( EFalse ); |
|
609 } |
|
610 else |
|
611 { |
|
612 delete iScaler; |
|
613 iScaler = NULL; |
|
614 if ( iEncoder ) |
|
615 { |
|
616 EncodeImageL( EFalse ); |
|
617 } |
|
618 else |
|
619 { |
|
620 UNILOGGER_WRITE( "Scaling ready (no endocing)." ); |
|
621 size = iDestBitmap->SizeInPixels(); |
|
622 Reset(); |
|
623 iCallback->ImageProcessingReady( size, iResultFileSize, EFalse ); |
|
624 } |
|
625 } |
|
626 } |
|
627 else |
|
628 { |
|
629 UNILOGGER_WRITE( "Scaling ready." ); |
|
630 if ( CheckEncodedFileSize() || |
|
631 ( iCompressTriesLeft <= 0 ) ) |
|
632 { |
|
633 size = iDestBitmap->SizeInPixels(); |
|
634 TBool compressed( EFalse ); |
|
635 if ( iTargetFileSize && |
|
636 iCompressTriesLeft != KIterationCount && |
|
637 !( iFlags & EImplicitCompress ) ) |
|
638 { |
|
639 compressed = ETrue; |
|
640 } |
|
641 Reset(); |
|
642 iCallback->ImageProcessingReady( size, iResultFileSize, compressed ); |
|
643 } |
|
644 else |
|
645 { |
|
646 ResolveQFactorL(); |
|
647 EncodeImageL( ETrue ); |
|
648 } |
|
649 } |
|
650 } |
|
651 |
|
652 // --------------------------------------------------------- |
|
653 // CUniImageProcessor::RunError |
|
654 // |
|
655 // --------------------------------------------------------- |
|
656 // |
|
657 TInt CUniImageProcessor::RunError( TInt aError ) |
|
658 { |
|
659 UNILOGGER_ENTERFN( "CUniImageProcessor: RunError()" ); |
|
660 UNILOGGER_WRITEF( _L("aError: %d"), aError ); |
|
661 iError = aError; |
|
662 Cancel(); |
|
663 //Complete self. |
|
664 iStatus = KRequestPending; |
|
665 TRequestStatus* pStatus = &iStatus; |
|
666 SetActive(); |
|
667 User::RequestComplete( pStatus, KErrNone ); |
|
668 return KErrNone; |
|
669 } |
|
670 |
|
671 // --------------------------------------------------------- |
|
672 // CUniImageProcessor::Reset |
|
673 // |
|
674 // --------------------------------------------------------- |
|
675 // |
|
676 EXPORT_C void CUniImageProcessor::Reset() |
|
677 { |
|
678 UNILOGGER_ENTERFN( "CUniImageProcessor: Reset()" ); |
|
679 iDestFile = NULL; |
|
680 |
|
681 delete iDecoder; |
|
682 iDecoder = NULL; |
|
683 |
|
684 delete iScaler; |
|
685 iScaler = NULL; |
|
686 |
|
687 delete iEncoder; |
|
688 iEncoder = NULL; |
|
689 |
|
690 delete iFrameImageData; |
|
691 iFrameImageData = NULL; |
|
692 |
|
693 if ( iFlags & ESourceBitmapOwned ) |
|
694 { |
|
695 delete iSourceBitmap; |
|
696 } |
|
697 |
|
698 iSourceBitmap = NULL; |
|
699 iFlags &= ~ESourceBitmapOwned; |
|
700 |
|
701 if ( iFlags & EDestBitmapOwned ) |
|
702 { |
|
703 delete iDestBitmap; |
|
704 } |
|
705 |
|
706 iDestBitmap = NULL; |
|
707 iFlags &= ~EDestBitmapOwned; |
|
708 |
|
709 if ( iFlags & ESourceMaskOwned ) |
|
710 { |
|
711 delete iSourceMask; |
|
712 } |
|
713 |
|
714 iSourceMask = NULL; |
|
715 iFlags &= ~ESourceMaskOwned; |
|
716 |
|
717 if ( iFlags & EDestMaskOwned ) |
|
718 { |
|
719 delete iDestMask; |
|
720 } |
|
721 |
|
722 iDestMask = NULL; |
|
723 iFlags &= ~EDestMaskOwned; |
|
724 } |
|
725 |
|
726 |
|
727 // --------------------------------------------------------- |
|
728 // CUniImageProcessor::CreateImageDataL |
|
729 // |
|
730 // --------------------------------------------------------- |
|
731 // |
|
732 void CUniImageProcessor::CreateImageDataL( const TDesC8& aTargetType, const TSize& aTargetSize ) |
|
733 { |
|
734 if ( aTargetType.CompareF( KMsgMimeImageJpeg ) == 0 ) |
|
735 { |
|
736 TInt targetQF( KJpegQualityFactorNormal ); |
|
737 if ( aTargetSize.iWidth <= KHighQualityMaxWidth && |
|
738 aTargetSize.iHeight <= KHighQualityMaxHeight ) |
|
739 { |
|
740 //Use higher quality factor for small images |
|
741 targetQF = KJpegQualityFactorHigh; |
|
742 } |
|
743 |
|
744 // Use original image data if available |
|
745 if ( iDecoder ) |
|
746 { |
|
747 iFrameImageData = iDecoder->FrameData().AllocL(); |
|
748 |
|
749 TInt imageDataCount = iFrameImageData->ImageDataCount(); |
|
750 while ( imageDataCount-- ) |
|
751 { |
|
752 TImageDataBlock* data = iFrameImageData->GetImageData( imageDataCount ); |
|
753 const TUid type = data->DataType(); |
|
754 if ( type == KJPGQTableUid ) |
|
755 { |
|
756 TJpegQTable* qdata = static_cast<TJpegQTable*>( data ); |
|
757 if ( qdata->iTableIndex != TJpegQTable::ELumaTable && |
|
758 qdata->iTableIndex != TJpegQTable::EChromaTable ) |
|
759 { |
|
760 // Jpeg encoder supports only two QTables. Others (probably |
|
761 // another chroma table) must be removed. Otherwise Jpeg |
|
762 // encoder leaves. |
|
763 iFrameImageData->RemoveImageData( imageDataCount ); |
|
764 delete qdata; |
|
765 } |
|
766 } |
|
767 else if ( type == KJPGImageDataUid ) |
|
768 { |
|
769 iJpegImageData = static_cast<TJpegImageData*>( data ); |
|
770 // iSourceBitmap is NULL, if image is in right size |
|
771 iOriginalQualityFactor = iJpegImageData->iQualityFactor; |
|
772 if ( iSourceBitmap ) |
|
773 { |
|
774 CalculateMPixfactorL(); |
|
775 iJpegImageData->iQualityFactor = iOriginalQualityFactor / iMPixFactor ; |
|
776 iQFactorCalculated = ETrue; |
|
777 } |
|
778 } |
|
779 } |
|
780 } |
|
781 if ( !iJpegImageData ) |
|
782 { |
|
783 // Delete possibly existing iFrameImageData. There maybe one at least |
|
784 // when converting PNG images to JPEG. |
|
785 delete iFrameImageData; |
|
786 iFrameImageData = NULL; |
|
787 iFrameImageData = CFrameImageData::NewL(); |
|
788 TJpegImageData* jpegImageData = new ( ELeave ) TJpegImageData; |
|
789 CleanupStack::PushL( jpegImageData ); |
|
790 jpegImageData->iSampleScheme = TJpegImageData::EColor420; |
|
791 |
|
792 iOriginalQualityFactor = targetQF; |
|
793 if ( iSourceBitmap ) |
|
794 { |
|
795 iMPixFactor = Max ( KMPixfactorMin, |
|
796 ( static_cast<TReal>( iSourceBitmap->SizeInPixels().iWidth ) * |
|
797 static_cast<TReal>( iSourceBitmap->SizeInPixels().iHeight ) ) / KQFMPixfactor ); |
|
798 iMPixFactor = Min( iMPixFactor, KMPixfactorMax ); |
|
799 jpegImageData->iQualityFactor = iOriginalQualityFactor / iMPixFactor ; |
|
800 iQFactorCalculated = ETrue; |
|
801 } |
|
802 else |
|
803 { |
|
804 jpegImageData->iQualityFactor = iOriginalQualityFactor ; |
|
805 } |
|
806 User::LeaveIfError( iFrameImageData->AppendImageData( jpegImageData ) ); |
|
807 iJpegImageData = jpegImageData; |
|
808 CleanupStack::Pop(); // jpegFormat, ownership transferred |
|
809 } |
|
810 } |
|
811 } |
|
812 |
|
813 // ---------------------------------------------------------------------------- |
|
814 // CUniImageProcessor::CalculateScaleRatio |
|
815 // |
|
816 // Calculates correct scaling ratio when aspect ratio needs to be preserved. |
|
817 // Correct scaling ratio is the smaller of the width and height original image |
|
818 // size and target image size ratios. |
|
819 // ---------------------------------------------------------------------------- |
|
820 // |
|
821 TReal CUniImageProcessor::CalculateScaleRatio( const TSize& aTargetSize, |
|
822 const TSize& aOriginalSize ) const |
|
823 { |
|
824 TReal widthRatio = static_cast<TReal>( aTargetSize.iWidth ) / |
|
825 static_cast<TReal>( aOriginalSize.iWidth ); |
|
826 TReal heightRatio = static_cast<TReal>( aTargetSize.iHeight ) / |
|
827 static_cast<TReal>( aOriginalSize.iHeight ); |
|
828 return ( widthRatio < heightRatio ) ? widthRatio : heightRatio; |
|
829 } |
|
830 |
|
831 // --------------------------------------------------------- |
|
832 // CUniImageProcessor::ResolveQFactorL |
|
833 // |
|
834 // --------------------------------------------------------- |
|
835 // |
|
836 void CUniImageProcessor::ResolveQFactorL() |
|
837 { |
|
838 UNILOGGER_ENTERFN( "CUniImageProcessor: ResolveQFactorL()" ); |
|
839 |
|
840 // Leave if "JPGImageData" was not found. |
|
841 if ( !iJpegImageData ) |
|
842 { |
|
843 User::Leave( KErrNotSupported ); |
|
844 } |
|
845 |
|
846 if ( !iQFactorCalculated ) // First try |
|
847 { |
|
848 if ( iSourceBitmap ) |
|
849 { |
|
850 CalculateMPixfactorL(); |
|
851 iJpegImageData->iQualityFactor = iOriginalQualityFactor / iMPixFactor ; |
|
852 } |
|
853 else |
|
854 { |
|
855 iJpegImageData->iQualityFactor = iOriginalQualityFactor * |
|
856 KPercentCoefficientsCounts[ iMPixFactor - 1 ][Min( KIterationCount-iCompressTriesLeft, KIterationCount )] / 100; |
|
857 |
|
858 } |
|
859 iQFactorCalculated = ETrue; |
|
860 } |
|
861 else |
|
862 { |
|
863 iJpegImageData->iQualityFactor = iOriginalQualityFactor * |
|
864 KPercentCoefficientsCounts[ iMPixFactor - 1 ][Min( KIterationCount-iCompressTriesLeft, KIterationCount )] / 100; |
|
865 } |
|
866 |
|
867 if ( iJpegImageData->iQualityFactor <= 0 ) |
|
868 { |
|
869 iJpegImageData->iQualityFactor = 0; |
|
870 iCompressTriesLeft = 0; // No use to iterate more than this. |
|
871 } |
|
872 } |
|
873 |
|
874 // --------------------------------------------------------- |
|
875 // CUniImageProcessor::CheckEncodedFileSize |
|
876 // |
|
877 // --------------------------------------------------------- |
|
878 // |
|
879 TBool CUniImageProcessor::CheckEncodedFileSize() |
|
880 { |
|
881 TBool retVal = ETrue; |
|
882 |
|
883 // Get encoded file size. |
|
884 // Store possible error to "iError". |
|
885 iError = iDestFile->Size( iResultFileSize ); |
|
886 |
|
887 if ( iTargetFileSize ) |
|
888 { |
|
889 // Compression requested. Check whether the size is small enough. |
|
890 retVal = ( iResultFileSize <= iTargetFileSize ); |
|
891 } |
|
892 return retVal; |
|
893 } |
|
894 |
|
895 // --------------------------------------------------------- |
|
896 // CUniImageProcessor::CalculateMPixfactorL |
|
897 // |
|
898 // --------------------------------------------------------- |
|
899 // |
|
900 void CUniImageProcessor::CalculateMPixfactorL() |
|
901 { |
|
902 if ( iSourceBitmap ) |
|
903 { |
|
904 iMPixFactor = Max ( KMPixfactorMin, |
|
905 ( static_cast<TReal>( iSourceBitmap->SizeInPixels().iWidth ) * |
|
906 static_cast<TReal>( iSourceBitmap->SizeInPixels().iHeight ) ) / KQFMPixfactor ); |
|
907 } |
|
908 if (iMPixFactor == KMPixfactorMin ) |
|
909 { |
|
910 // Sometimes on the emulator bitmap dimensions show completely wrong values. |
|
911 // Whether this happens also on the device is unknown |
|
912 // Just in case use files size as second option |
|
913 // As image size changes more rapidly as image dimension use extra divider |
|
914 if ( iTargetFileSize >= 0 ) |
|
915 { |
|
916 iMPixFactor = Max( KMPixfactorMin, ( iOriginalFileSize / iTargetFileSize ) / KMPixSizeDivider ); |
|
917 } |
|
918 } |
|
919 iMPixFactor = Min( iMPixFactor, KMPixfactorMax ); |
|
920 } |
|
921 |
|
922 // End of File |