1 /* |
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2 * Copyright (c) 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: Implementation of Camera image decoder |
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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 |
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20 |
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21 #include <imageconversion.h> |
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22 #include <ExifRead.h> |
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23 #include <ecam.h> // MCameraBuffer |
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24 |
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25 #include <eikenv.h> |
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26 |
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27 #include "camlogging.h" |
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28 #include "camfilesaveutility.h" |
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29 #include "cambuffershare.h" |
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30 |
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31 #include "camimagedecoder.h" |
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32 |
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33 // =========================================================================== |
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34 // Local constants |
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35 |
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36 namespace NCamCameraController |
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37 { |
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38 // Decoding flags |
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39 static const TUint32 KConversionOptions = |
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40 ( CImageDecoder::EOptionNone |
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41 | CImageDecoder::EOptionAlwaysThread |
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42 | CImageDecoder::EPreferFastDecode |
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43 ); |
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44 |
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45 // EXIF reader flags |
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46 // Only need the thumbnail, so no need to parse the |
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47 // main (jpeg) image. |
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48 static const TUint KExifReaderFlags = CExifRead::ENoJpeg; |
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49 |
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50 // Other constants |
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51 static const TInt KMaxRetries = 10; |
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52 static const TInt KPriority = CActive::EPriorityHigh; |
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53 } |
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54 |
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55 using namespace NCamCameraController; |
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56 |
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57 // =========================================================================== |
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58 // public constructor and destructor |
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59 |
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60 CCamImageDecoder* |
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61 CCamImageDecoder::NewL( MCamImageDecoderObserver& aObserver ) |
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62 { |
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63 CCamImageDecoder* self = |
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64 new (ELeave) CCamImageDecoder( aObserver ); |
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65 |
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66 CleanupStack::PushL( self ); |
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67 self->ConstructL(); |
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68 CleanupStack::Pop( self ); |
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69 |
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70 return self; |
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71 } |
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72 |
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73 |
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74 CCamImageDecoder::~CCamImageDecoder() |
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75 { |
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76 PRINT( _L("Camera => ~CCamImageDecoder") ); |
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77 Cancel(); |
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78 |
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79 delete iDecoder; |
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80 |
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81 SetImageData( NULL ); |
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82 if(iDecodedBitmap) |
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83 { |
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84 delete iDecodedBitmap; |
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85 iDecodedBitmap = NULL; |
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86 } |
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87 iFs.Close(); |
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88 PRINT( _L("Camera <= ~CCamImageDecoder") ); |
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89 } |
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90 |
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91 // =========================================================================== |
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92 // public methods |
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93 void |
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94 CCamImageDecoder::StartConversionL( CCamBufferShare* aBuffer ) |
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95 { |
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96 PRINT( _L("Camera => CCamImageDecoder::StartConversionL") ); |
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97 |
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98 // Data for CImageDecoder must be available throughout the conversion. |
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99 // Need to stop any outstanding operation before deleting the descriptor. |
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100 Cancel(); |
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101 |
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102 PRINT( _L("Camera <> CCamImageDecoder: Copying image data..") ); |
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103 |
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104 SetImageData( aBuffer ); |
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105 |
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106 // GetImageDataL leaves if no data available. |
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107 TDesC8* imageData = GetImageDataL(); |
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108 |
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109 PRINT( _L("Camera <> CCamImageDecoder: Creating decoder..") ); |
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110 |
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111 delete iDecoder; |
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112 iDecoder = NULL; |
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113 iDecoder = CImageDecoder::DataNewL( iFs, *imageData, (CImageDecoder::TOptions)KConversionOptions ); |
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114 |
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115 if( iDecoder->FrameCount() > 0 ) |
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116 { |
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117 const TFrameInfo& info( iDecoder->FrameInfo() ); |
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118 |
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119 #ifdef _DEBUG |
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120 TSize size = info.iOverallSizeInPixels; |
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121 PRINT2( _L("Camera <> CCamImageDecoder: Bmp size(%d,%d)"), size.iWidth, size.iHeight ); |
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122 PRINT1( _L("Camera <> CCamImageDecoder: Bmp dispmode(%d)"), info.iFrameDisplayMode ); |
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123 #endif |
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124 |
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125 PRINT( _L("Camera <> CCamImageDecoder: Create bitmap for snapshot..") ); |
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126 if( !iDecodedBitmap ) iDecodedBitmap = new (ELeave) CFbsBitmap; |
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127 else iDecodedBitmap->Reset(); |
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128 |
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129 TInt createError = iDecodedBitmap->Create( info.iOverallSizeInPixels, |
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130 info.iFrameDisplayMode ); |
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131 if( KErrNone != createError ) |
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132 { |
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133 delete iDecodedBitmap; |
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134 iDecodedBitmap = NULL; |
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135 User::Leave( createError ); |
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136 } |
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137 |
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138 PRINT( _L("Camera <> CCamImageDecoder: start conversion..") ); |
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139 iRetryCounter = 0; |
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140 iDecoder->Convert( &iStatus, *iDecodedBitmap, 0 ); |
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141 SetActive(); |
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142 } |
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143 else |
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144 { |
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145 PRINT( _L("Camera <> CCamImageDecoder: No frame provided, leave..") ); |
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146 User::Leave( KErrNotFound ); |
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147 } |
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148 |
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149 PRINT( _L("Camera <= CCamImageDecoder::StartConversionL") ); |
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150 } |
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151 |
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152 |
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153 // --------------------------------------------------------------------------- |
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154 // --------------------------------------------------------------------------- |
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155 // |
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156 TDesC8* |
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157 CCamImageDecoder::GetImageDataL() |
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158 { |
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159 PRINT( _L("Camera => CCamImageDecoder::GetImageDataL") ); |
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160 |
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161 if( !iSharedImageData || |
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162 !iSharedImageData->SharedBuffer() ) |
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163 { |
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164 User::Leave( KErrNotFound ); |
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165 } |
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166 |
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167 TDesC8* data = iSharedImageData->SharedBuffer()->DataL( 0 ); |
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168 |
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169 if( !data ) |
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170 User::Leave( KErrNotFound ); |
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171 |
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172 delete iThumbnailData; |
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173 iThumbnailData = ReadExifThumbNail( *data ); // Returns NULL on errors |
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174 |
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175 #ifdef CAMERAAPP_CREATE_TESTIMAGE |
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176 TRAPD( saveStatus1, SaveImageDataToFileL( *data, _L("testimagefull.jpg") ) ); |
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177 PRINT1( _L("Camera <> CCamImageDecoder: Save full image to file status:%d"), saveStatus1 ); |
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178 if( iThumbnailData ) |
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179 { |
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180 TRAPD( saveStatus2, SaveImageDataToFileL( *iThumbnailData, _L("testimagethumb.jpg") ) ); |
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181 PRINT1( _L("Camera <> CCamImageDecoder: Save thumbnail to file status:%d"), saveStatus2 ); |
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182 } |
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183 #endif |
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184 |
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185 |
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186 if( iThumbnailData ) |
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187 { |
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188 data = iThumbnailData; |
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189 } |
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190 |
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191 PRINT1( _L("Camera <= CCamImageDecoder::GetImageDataL, data size:%d"), data->Size() ); |
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192 return data; |
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193 } |
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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 HBufC8* |
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199 CCamImageDecoder::ReadExifThumbNail( const TDesC8& aExifData ) |
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200 { |
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201 PRINT( _L("Camera => CCamImageDecoder::ReadExifThumbNailL") ); |
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202 HBufC8* thumb = NULL; |
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203 TRAP_IGNORE( |
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204 { |
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205 CExifRead* reader = CExifRead::NewL( aExifData, KExifReaderFlags ); |
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206 CleanupStack::PushL( reader ); |
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207 thumb = reader->GetThumbnailL(); |
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208 CleanupStack::PopAndDestroy( reader ); |
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209 }); |
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210 |
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211 PRINT( _L("Camera <= CCamImageDecoder::ReadExifThumbNailL") ); |
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212 return thumb; |
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213 } |
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214 |
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215 // =========================================================================== |
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216 // from CActive |
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217 |
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218 // --------------------------------------------------------------------------- |
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219 // virtual |
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220 // --------------------------------------------------------------------------- |
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221 // |
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222 void |
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223 CCamImageDecoder::DoCancel() |
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224 { |
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225 PRINT( _L("Camera => CCamImageDecoder::DoCancel") ); |
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226 |
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227 if( iDecoder ) |
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228 { |
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229 iDecoder->Cancel(); |
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230 delete iDecoder; |
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231 iDecoder = NULL; |
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232 } |
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233 |
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234 SetImageData( NULL ); |
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235 |
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236 PRINT( _L("Camera <= CCamImageDecoder::DoCancel") ); |
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237 } |
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238 |
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239 |
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240 // --------------------------------------------------------------------------- |
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241 // virtual |
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242 // --------------------------------------------------------------------------- |
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243 // |
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244 void |
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245 CCamImageDecoder::RunL() |
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246 { |
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247 PRINT1( _L("Camera => CCamImageDecoder::RunL, iStatus:%d"), iStatus.Int() ); |
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248 |
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249 switch( iStatus.Int() ) |
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250 { |
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251 case KErrNone : |
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252 { |
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253 // CImageDecoder has finished using the data, |
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254 // so we are able to free it. |
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255 SetImageData( NULL ); |
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256 iObserver.ImageDecoded( iStatus.Int(), iDecodedBitmap ); |
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257 break; |
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258 } |
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259 case KErrUnderflow : |
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260 { |
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261 // Decoder did not have enough data to convert. |
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262 // CImageDecoder documentation recommends calling |
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263 // repeatedly ContinueConvert. |
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264 if( iRetryCounter++ < KMaxRetries ) |
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265 { |
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266 iStatus = KErrNone; |
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267 iDecoder->ContinueConvert( &iStatus ); |
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268 SetActive(); |
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269 } |
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270 else |
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271 { |
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272 // Handled in RunError |
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273 User::Leave( KErrUnderflow ); |
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274 } |
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275 break; |
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276 } |
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277 case KErrCancel : |
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278 default : |
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279 { |
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280 User::Leave( iStatus.Int() ); |
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281 break; |
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282 } |
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283 } |
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284 |
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285 PRINT( _L("Camera <= CCamImageDecoder::RunL") ); |
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286 } |
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287 |
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288 |
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289 // --------------------------------------------------------------------------- |
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290 // virtual |
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291 // --------------------------------------------------------------------------- |
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292 // |
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293 TInt |
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294 CCamImageDecoder::RunError( TInt aError ) |
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295 { |
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296 PRINT1( _L("Camera => CCamImageDecoder::RunError(%d)"), aError ); |
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297 |
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298 SetImageData( NULL ); |
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299 // Leave has occurred in RunL. |
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300 // Notify observer with error. |
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301 iObserver.ImageDecoded( aError, NULL ); |
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302 |
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303 PRINT( _L("Camera <= CCamImageDecoder::RunError") ); |
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304 return KErrNone; |
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305 } |
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306 |
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307 |
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308 // =========================================================================== |
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309 void |
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310 CCamImageDecoder::SetImageData( CCamBufferShare* aBuffer ) |
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311 { |
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312 if( iSharedImageData ) |
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313 { |
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314 iSharedImageData->Release(); |
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315 iSharedImageData = NULL; |
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316 } |
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317 |
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318 iSharedImageData = aBuffer; |
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319 |
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320 if( iSharedImageData ) |
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321 iSharedImageData->Reserve(); |
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322 } |
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323 |
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324 // =========================================================================== |
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325 // private constructors |
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326 |
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327 |
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328 void |
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329 CCamImageDecoder::ConstructL() |
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330 { |
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331 User::LeaveIfError( iFs.Connect() ); |
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332 |
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333 CActiveScheduler::Add( this ); |
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334 } |
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335 |
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336 |
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337 |
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338 CCamImageDecoder::CCamImageDecoder( MCamImageDecoderObserver& aObserver ) |
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339 : CActive( KPriority ), |
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340 iObserver( aObserver ) |
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341 { |
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342 } |
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343 |
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344 // end of file |
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