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1 /* |
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2 * Copyright (c) 2008 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: Image processor and scaler |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include "cvimpstimageprocessor.h" |
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20 #include "tvimpstconsts.h" |
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21 #include <imageconversion.h> |
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22 #include <bitmaptransforms.h> |
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23 #include <s32file.h> |
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24 #include <e32cmn.h> |
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25 #include "uiservicetabtracer.h" |
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26 // CONSTANTS |
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27 const TInt KChatCustomBitmapWidth = 65; |
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28 const TInt KChatCustomBitmapHeight = 65; |
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29 const TInt KMaxImageSize = 1800; //2k |
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30 const TInt KMimeLength = 16; |
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31 const TInt KScaleSize = 10; |
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32 |
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33 //----------------------------------------------------------------------------- |
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34 // CCAImageLoader::CCAImageLoader |
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35 // ( Other items commented in header ) |
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36 //----------------------------------------------------------------------------- |
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37 CVimpstImageProcessor::CVimpstImageProcessor( MCAImageProcessObserver* aObserver ) |
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38 : CActive( CActive::EPriorityLow ),iObserver(aObserver),iScaleSize(KScaleSize) |
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39 { |
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40 CActiveScheduler::Add( this ); |
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41 } |
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42 |
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43 //----------------------------------------------------------------------------- |
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44 // CVimpstImageProcessor::CVimpstImageProcessor |
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45 // ( Other items commented in header ) |
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46 //----------------------------------------------------------------------------- |
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47 CVimpstImageProcessor::~CVimpstImageProcessor() |
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48 { |
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49 iFs.Close(); |
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50 |
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51 delete iImageDecoder; |
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52 delete iScaler; |
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53 delete iImageEncoder; |
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54 if(!isBitmapReturned) |
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55 { |
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56 delete iBitmap; |
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57 } |
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58 delete iMimeType; |
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59 } |
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60 |
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61 //----------------------------------------------------------------------------- |
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62 // CVimpstImageProcessor::NewL |
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63 // ( Other items commented in header ) |
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64 //----------------------------------------------------------------------------- |
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65 CVimpstImageProcessor* CVimpstImageProcessor::NewL( MCAImageProcessObserver* aObserver) |
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66 { |
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67 TRACER_AUTO; |
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68 CVimpstImageProcessor* self = |
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69 new ( ELeave ) CVimpstImageProcessor(aObserver); |
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70 CleanupStack::PushL( self ); |
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71 self->ConstructL(); |
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72 CleanupStack::Pop( self ); |
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73 return self; |
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74 } |
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75 |
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76 //----------------------------------------------------------------------------- |
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77 // CVimpstImageProcessor::ConstructL |
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78 // ( Other items commented in header ) |
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79 //----------------------------------------------------------------------------- |
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80 void CVimpstImageProcessor::ConstructL() |
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81 { |
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82 User::LeaveIfError( iFs.Connect() ); |
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83 } |
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84 |
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85 |
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86 //----------------------------------------------------------------------------- |
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87 // CVimpstImageProcessor::RunL |
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88 // ( Other items commented in header ) |
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89 //----------------------------------------------------------------------------- |
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90 void CVimpstImageProcessor::RunL() |
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91 { |
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92 TRACER_AUTO; |
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93 TInt status = iStatus.Int(); |
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94 |
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95 if(!status) |
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96 { |
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97 switch(iProcessingState) |
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98 { |
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99 case EConvertImageDatatoBitmap: |
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100 { |
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101 ConvertImageToBitmapL(); |
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102 break; |
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103 } |
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104 case EScaleBitmap: |
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105 { |
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106 ScaleBitmapL(); |
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107 break; |
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108 } |
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109 case EConentFromScaledBitmap: |
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110 { |
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111 ContentFromScaledBitmapL(); |
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112 break; |
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113 } |
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114 case EProcessingComplete: |
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115 { |
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116 if( iContent->Length() > KMaxImageSize) |
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117 { |
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118 delete iScaler; |
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119 iScaler = NULL; |
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120 delete iImageEncoder; |
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121 iImageEncoder = NULL; |
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122 delete iContent; |
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123 iTargetSize.SetSize( KChatCustomBitmapWidth - iScaleSize, KChatCustomBitmapHeight - iScaleSize ); |
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124 iScaleSize += KScaleSize; |
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125 ScaleBitmapL(); |
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126 } |
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127 else |
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128 { |
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129 TRACE("RunL completed "); |
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130 CompleteRequestL(); |
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131 } |
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132 break; |
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133 } |
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134 default: |
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135 { |
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136 |
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137 } |
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138 } |
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139 |
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140 } |
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141 else |
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142 { |
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143 TRACE("RunL completed "); |
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144 CompleteRequestL(); |
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145 } |
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146 |
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147 } |
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148 //----------------------------------------------------------------------------- |
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149 // CVimpstImageProcessor::ConvertImageToBitmapL() |
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150 // ( Other items commented in header ) |
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151 //----------------------------------------------------------------------------- |
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152 void CVimpstImageProcessor::ConvertImageToBitmapL() |
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153 { |
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154 TRACER_AUTO; |
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155 TSize origSize( iImageDecoder->FrameInfo().iOverallSizeInPixels ); |
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156 ScaleSize( origSize, iTargetSize ); |
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157 TBool fullyScaleable( iImageDecoder->FrameInfo().iFlags & TFrameInfo::EFullyScaleable ); |
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158 TSize decodeSize( DecodeSize( origSize, iTargetSize, fullyScaleable ) ); |
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159 |
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160 iBitmap = new (ELeave) CFbsBitmap(); |
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161 User::LeaveIfError( iBitmap->Create( decodeSize, |
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162 iImageDecoder->FrameInfo().iFrameDisplayMode ) ); |
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163 iImageDecoder->Convert( &iStatus, *iBitmap ); |
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164 iProcessingState = EScaleBitmap; // set state to next step |
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165 if( !IsActive() ) |
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166 { |
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167 SetActive(); |
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168 } |
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169 } |
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170 //----------------------------------------------------------------------------- |
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171 // CVimpstImageProcessor::ScaleBitmapL() |
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172 // ( Other items commented in header ) |
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173 //----------------------------------------------------------------------------- |
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174 void CVimpstImageProcessor::ScaleBitmapL() |
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175 { |
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176 TRACER_AUTO; |
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177 TSize currentSize( iBitmap ? iBitmap->SizeInPixels() : iTargetSize ); |
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178 |
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179 if( currentSize != iTargetSize ) |
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180 { |
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181 // bitmap exists and the size is wrong, |
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182 // we have to scale the bitmap |
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183 iScaler = CBitmapScaler::NewL(); |
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184 iScaler->Scale( &iStatus, *iBitmap, iTargetSize ); |
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185 iProcessingState = EConentFromScaledBitmap; // set state to next step |
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186 if( !IsActive() ) |
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187 { |
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188 SetActive(); |
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189 } |
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190 } |
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191 else |
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192 { // get content from scaled bitmap |
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193 ContentFromScaledBitmapL(); |
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194 } |
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195 |
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196 } |
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197 |
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198 //----------------------------------------------------------------------------- |
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199 // CVimpstImageProcessor::ContentFromScaledBitmapL() |
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200 // ( Other items commented in header ) |
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201 //----------------------------------------------------------------------------- |
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202 void CVimpstImageProcessor::ContentFromScaledBitmapL() |
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203 { |
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204 iContent = NULL; |
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205 iImageEncoder = CImageEncoder::DataNewL( iContent,*iMimeType); |
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206 iImageEncoder->Convert( &iStatus, *iBitmap ); |
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207 iProcessingState = EProcessingComplete ; // set state to next step |
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208 if( !IsActive() ) |
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209 { |
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210 SetActive(); |
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211 } |
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212 } |
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213 |
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214 |
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215 //----------------------------------------------------------------------------- |
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216 // CVimpstImageProcessor::DoCancel |
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217 // ( Other items commented in header ) |
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218 //----------------------------------------------------------------------------- |
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219 void CVimpstImageProcessor::DoCancel() |
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220 { |
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221 ClearState(); |
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222 } |
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223 |
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224 //----------------------------------------------------------------------------- |
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225 // CVimpstImageProcessor::RunError |
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226 // ( Other items commented in header ) |
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227 //----------------------------------------------------------------------------- |
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228 TInt CVimpstImageProcessor::RunError( TInt aError ) |
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229 { |
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230 if( IsActive() ) |
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231 { |
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232 iStatus = aError; |
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233 Cancel(); |
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234 } |
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235 |
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236 if( aError == KErrNoMemory ) |
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237 { |
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238 CActiveScheduler::Current()->Error( KErrNoMemory ); |
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239 } |
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240 |
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241 // Clean up and reset all pending messages |
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242 ClearState(); |
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243 TRAP_IGNORE( ResetProcessingL( aError ) ); |
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244 |
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245 return KErrNone; |
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246 } |
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247 //----------------------------------------------------------------------------- |
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248 // CVimpstImageProcessor::StartProcessingFromDataL |
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249 // ( Other items commented in header ) |
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250 //----------------------------------------------------------------------------- |
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251 TInt CVimpstImageProcessor::ProcessFromDataL( const TDesC8& aImageData , const TDesC8& aMimeType) |
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252 { |
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253 TRACER_AUTO; |
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254 TInt err = KErrNone; |
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255 if ( aMimeType.Length()) |
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256 { |
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257 // if the mimetype is passed then allocate the memory |
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258 iMimeType = aMimeType.AllocL(); |
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259 } |
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260 else |
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261 { |
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262 // if no mimetype find the mimetype |
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263 iMimeType = HBufC8::NewL( KMimeLength); |
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264 TPtr8 mimePtr = iMimeType->Des(); |
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265 TRAP(err,CImageDecoder::GetMimeTypeDataL( aImageData , mimePtr )); |
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266 if(KErrNone != err) |
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267 { |
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268 return err; |
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269 } |
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270 } |
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271 iImageDecoder = NULL; |
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272 // need to check for the mimetype length, as sometimes CImageDecoder::GetMimeTypeDataL |
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273 // is alos not able to give the mimetype |
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274 iImageDecoder = CImageDecoder::DataNewL(iFs, aImageData , *iMimeType); |
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275 iProcessingState = EConvertImageDatatoBitmap; |
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276 RunL(); |
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277 return err; |
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278 } |
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279 |
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280 //----------------------------------------------------------------------------- |
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281 // CVimpstImageProcessor::ProcessFromFileL |
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282 // ( Other items commented in header ) |
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283 //----------------------------------------------------------------------------- |
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284 void CVimpstImageProcessor::ProcessFromFileL( const TDesC& aFileName , const TDesC8& aMimeType) |
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285 { |
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286 TRACER_AUTO; |
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287 iMimeType = aMimeType.AllocL(); |
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288 iImageDecoder = NULL; |
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289 iImageDecoder = CImageDecoder::FileNewL(iFs, aFileName, *iMimeType ); |
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290 iProcessingState = EConvertImageDatatoBitmap; |
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291 RunL(); |
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292 |
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293 } |
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294 |
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295 //----------------------------------------------------------------------------- |
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296 // CVimpstImageProcessor::CancelProcessing |
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297 // ( Other items commented in header ) |
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298 //----------------------------------------------------------------------------- |
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299 void CVimpstImageProcessor::CancelProcessing() |
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300 { |
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301 if( IsActive() ) |
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302 { |
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303 Cancel(); |
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304 } |
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305 } |
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306 //----------------------------------------------------------------------------- |
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307 // CVimpstImageProcessor::RegisterObserver |
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308 // ( Other items commented in header ) |
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309 //----------------------------------------------------------------------------- |
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310 void CVimpstImageProcessor::RegisterObserver( MCAImageProcessObserver* aObserver ) |
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311 { |
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312 iObserver = aObserver; |
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313 } |
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314 //----------------------------------------------------------------------------- |
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315 // CVimpstImageProcessor::GetContentData |
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316 // ( Other items commented in header ) |
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317 //----------------------------------------------------------------------------- |
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318 |
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319 HBufC8* CVimpstImageProcessor::GetContentData() |
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320 { |
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321 return iContent; |
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322 } |
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323 //----------------------------------------------------------------------------- |
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324 // CVimpstImageProcessor::Bitmap |
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325 // ( Other items commented in header ) |
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326 //----------------------------------------------------------------------------- |
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327 |
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328 CFbsBitmap& CVimpstImageProcessor::Bitmap() |
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329 { |
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330 isBitmapReturned = ETrue; |
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331 return *iBitmap; |
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332 } |
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333 //----------------------------------------------------------------------------- |
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334 // CVimpstImageProcessor::DecodeSize |
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335 // Scale to nearest (larger or equal) size with ratio 1:1, 1:2, 1:4 or 1:8 |
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336 //----------------------------------------------------------------------------- |
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337 TSize CVimpstImageProcessor::DecodeSize( const TSize& aSize, const TSize& aTargetSize, |
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338 TBool aAnyRatio ) |
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339 { |
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340 TRACER_AUTO; |
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341 if( aAnyRatio || aSize == aTargetSize ) |
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342 { |
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343 // decoder can scale to any ratio or the size is already correct |
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344 return aTargetSize; |
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345 } |
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346 |
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347 // 1:1 is always valid ratio for decode scaling |
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348 TInt lastValidRatio( 1 ); |
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349 for( TInt ratio( KDecodeScaleRatioMin ); ratio <= KDecodeScaleRatioMax; ratio <<= 1 ) |
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350 { |
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351 if( aSize.iWidth % ratio + aSize.iHeight % ratio == 0 ) |
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352 { |
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353 // this ratio is valid |
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354 if( aSize.iWidth / ratio < aTargetSize.iWidth || |
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355 aSize.iHeight / ratio < aTargetSize.iHeight ) |
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356 { |
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357 // the decoded size was smaller in some dimension, |
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358 // the last valid ratio should be used |
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359 break; |
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360 } |
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361 |
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362 // this scale ratio results to greater or equal size |
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363 lastValidRatio = ratio; |
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364 } |
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365 } |
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366 |
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367 // return the size scaled with correct ratio |
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368 return TSize( aSize.iWidth / lastValidRatio, |
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369 aSize.iHeight / lastValidRatio ); |
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370 } |
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371 |
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372 //----------------------------------------------------------------------------- |
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373 // CVimpstImageProcessor::ScaleSize |
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374 // ( Other items commented in header ) |
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375 //----------------------------------------------------------------------------- |
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376 TBool CVimpstImageProcessor::ScaleSize( const TSize& aSize, TSize& aNewSize ) |
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377 { |
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378 if( Max( aSize.iHeight, aSize.iWidth ) > KChatCustomBitmapWidth ) |
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379 { |
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380 aNewSize.SetSize( KChatCustomBitmapWidth, KChatCustomBitmapHeight ); |
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381 return ETrue; |
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382 } |
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383 |
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384 // old size is correct |
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385 aNewSize = aSize; |
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386 return EFalse; |
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387 } |
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388 |
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389 //----------------------------------------------------------------------------- |
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390 // CVimpstImageProcessor::CompleteRequestL |
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391 // ( Other items commented in header ) |
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392 //----------------------------------------------------------------------------- |
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393 void CVimpstImageProcessor::CompleteRequestL() |
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394 { |
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395 iObserver->HandleProcessingCompleteL( iStatus.Int() ); |
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396 } |
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397 |
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398 |
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399 //----------------------------------------------------------------------------- |
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400 // CVimpstImageProcessor::ResetProcessingL |
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401 // ( Other items commented in header ) |
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402 //----------------------------------------------------------------------------- |
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403 void CVimpstImageProcessor::ResetProcessingL( TInt aReason ) |
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404 { |
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405 // cancel operation |
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406 if( IsActive() ) |
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407 { |
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408 iStatus = aReason; |
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409 Cancel(); |
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410 } |
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411 } |
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412 |
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413 //----------------------------------------------------------------------------- |
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414 // CVimpstImageProcessor::ClearState |
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415 // ( Other items commented in header ) |
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416 //----------------------------------------------------------------------------- |
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417 void CVimpstImageProcessor::ClearState() |
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418 { |
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419 if( iScaler ) |
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420 { |
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421 iScaler->Cancel(); |
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422 delete iScaler; |
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423 iScaler = NULL; |
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424 } |
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425 if( iImageDecoder ) |
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426 { |
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427 iImageDecoder->Cancel(); |
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428 delete iImageDecoder; |
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429 iImageDecoder = NULL; |
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430 } |
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431 if( iImageEncoder ) |
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432 { |
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433 iImageEncoder->Cancel(); |
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434 delete iImageEncoder; |
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435 iImageEncoder = NULL; |
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436 } |
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437 if( iBitmap ) |
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438 { |
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439 delete iBitmap; |
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440 iBitmap = NULL; |
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441 } |
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442 if (iMimeType) |
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443 { |
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444 delete iMimeType; |
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445 iMimeType = NULL; |
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446 } |
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447 |
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448 } |
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449 |
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450 |
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451 // End of file |