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