1 /* |
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2 * Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Image thumbnail 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 //INCLUDE FILES |
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20 #include <e32base.h> |
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21 #include <imageconversion.h> |
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22 #include <ExifRead.h> |
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23 |
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24 #include <IclExtJpegApi.h> |
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25 #include "thumbnailimagedecoderv3.h" |
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26 #include "thumbnaillog.h" |
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27 #include "thumbnailpanic.h" |
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28 #include "OstTraceDefinitions.h" |
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29 #ifdef OST_TRACE_COMPILER_IN_USE |
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30 #include "thumbnailimagedecoderv3Traces.h" |
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31 #endif |
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32 |
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33 |
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34 |
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35 // CImageDecoder supports up to 1/8 size reduction if EFullyScaleable is |
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36 // not set. |
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37 const TInt KMaximumReductionFactor = 8; |
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38 |
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39 |
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40 // ============================ MEMBER FUNCTIONS =============================== |
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41 |
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42 // --------------------------------------------------------------------------- |
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43 // CThumbnailImageDecoder::CThumbnailImageDecoder() |
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44 // C++ default constructor can NOT contain any code, that might leave. |
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45 // --------------------------------------------------------------------------- |
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46 // |
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47 CThumbnailImageDecoderv3::CThumbnailImageDecoderv3( RFs& aFs ): |
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48 CActive(EPriorityStandard ), iBitmap( NULL ), iFs( aFs ), iBuffer( NULL ) |
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49 { |
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50 CActiveScheduler::Add( this ); |
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51 } |
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52 |
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53 |
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54 // --------------------------------------------------------------------------- |
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55 // CThumbnailImageDecoderv3::~CThumbnailImageDecoderv3() |
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56 // Destructor. |
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57 // --------------------------------------------------------------------------- |
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58 // |
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59 CThumbnailImageDecoderv3::~CThumbnailImageDecoderv3() |
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60 { |
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61 Release(); |
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62 } |
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63 |
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64 |
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65 // ----------------------------------------------------------------------------- |
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66 // CThumbnailImageDecoderv3::CreateL() |
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67 // Creates thumbnail of image |
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68 // ----------------------------------------------------------------------------- |
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69 // |
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70 void CThumbnailImageDecoderv3::CreateL( const TDesC8* aBuffer, MThumbnailProviderObserver& |
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71 aObserver, const CThumbnailManager::TThumbnailFlags /*aFlags*/, const |
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72 TDataType& aMimeType, const TSize& aSize ) |
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73 { |
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74 |
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75 TN_DEBUG1( "CCThumbnailImageDecoderv3::CreateL() called" ); |
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76 OstTrace0( TRACE_NORMAL, CTHUMBNAILIMAGEDECODERV3_CREATEL, "CThumbnailImageDecoderv3::CreateL" ); |
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77 |
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78 iSize = aSize; |
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79 iMimeType = aMimeType; |
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80 iObserver = &aObserver; |
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81 iBuffer = aBuffer; |
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82 |
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83 CreateDecoderL(); |
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84 |
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85 const TFrameInfo info( iDecoder->FrameInfo()); |
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86 if (( info.iOverallSizeInPixels.iWidth < 1 ) || ( |
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87 info.iOverallSizeInPixels.iHeight < 1 )) |
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88 { |
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89 User::Leave( KErrCorrupt ); |
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90 } |
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91 iFrameInfoFlags = info.iFlags; |
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92 iOriginalSize = info.iOverallSizeInPixels; |
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93 } |
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94 |
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95 // ----------------------------------------------------------------------------- |
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96 // CThumbnailImageDecoderv3::DecodeL() |
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97 // Decode the thumbnail image |
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98 // ----------------------------------------------------------------------------- |
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99 // |
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100 void CThumbnailImageDecoderv3::DecodeL( const TDisplayMode aDisplayMode ) |
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101 { |
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102 TN_DEBUG1( "CThumbnailImageDecoderv3::DecodeL() start" ); |
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103 OstTrace0( TRACE_NORMAL, CTHUMBNAILIMAGEDECODERV3_DECODEL, "CThumbnailImageDecoderv3::DecodeL - start" ); |
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104 |
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105 // Create the bitmap |
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106 if ( !iBitmap ) |
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107 { |
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108 iBitmap = new( ELeave )CFbsBitmap(); |
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109 } |
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110 |
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111 //Size in both x and y dimension must be non-zero, positive value |
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112 TSize loadSize( iOriginalSize) ; |
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113 |
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114 // If EFullyScaleable flag is not set, we need to figure out a size |
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115 // reduction factor. 1/1, 1/2, 1/4, and 1/8 are possible values for all |
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116 // plug-ins. SVG graphics can be rendered at any size even though |
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117 // EFullyScaleable is not set. |
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118 if ( !( iFrameInfoFlags& TFrameInfo::EFullyScaleable ) ) |
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119 { |
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120 loadSize = iOriginalSize; |
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121 TInt reductionFactor = 1; |
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122 while ( reductionFactor < KMaximumReductionFactor && ( iSize.iWidth < |
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123 loadSize.iWidth / 2 ) && ( iSize.iHeight < loadSize.iHeight / 2 )) |
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124 { |
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125 // magic: use loadSize that is half of previous size |
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126 loadSize.iWidth /= 2; |
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127 loadSize.iHeight /= 2; |
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128 reductionFactor *= 2; |
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129 } |
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130 // If original size is not an exact multiple of reduction factor, |
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131 // we need to round loadSize up |
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132 if ( reductionFactor && iOriginalSize.iWidth % reductionFactor ) |
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133 { |
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134 loadSize.iWidth++; |
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135 } |
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136 if ( reductionFactor && iOriginalSize.iHeight % reductionFactor ) |
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137 { |
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138 loadSize.iHeight++; |
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139 } |
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140 TN_DEBUG4( |
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141 "EFullyScaleable not set for image - loadSize=(%d,%d) reduction=1/%d ", loadSize.iWidth, loadSize.iHeight, reductionFactor ); |
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142 OstTraceExt3( TRACE_NORMAL, DUP1_CTHUMBNAILIMAGEDECODERV3_DECODEL, "CThumbnailImageDecoderv3::DecodeL;loadSize.iWidth=%d;loadSize.iHeight=%d;reductionFactor=%d", loadSize.iWidth, loadSize.iHeight, reductionFactor ); |
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143 } |
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144 |
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145 TInt err = iBitmap->Create( loadSize, aDisplayMode ); |
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146 if (err != KErrNone) |
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147 { |
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148 Release(); |
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149 User::Leave(err); |
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150 } |
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151 |
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152 iDecoder->Convert( &iStatus, * iBitmap ); |
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153 |
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154 SetActive(); |
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155 |
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156 TN_DEBUG1( "CThumbnailImageDecoderv3::DecodeL() end" ); |
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157 OstTrace0( TRACE_NORMAL, DUP2_CTHUMBNAILIMAGEDECODERV3_DECODEL, "CThumbnailImageDecoderv3::DecodeL - end" ); |
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158 } |
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159 |
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160 |
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161 // ----------------------------------------------------------------------------- |
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162 // CThumbnailImageDecoderv3::Release() |
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163 // Releases resources |
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164 // ----------------------------------------------------------------------------- |
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165 // |
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166 void CThumbnailImageDecoderv3::Release() |
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167 { |
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168 Cancel(); |
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169 |
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170 delete iDecoder; |
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171 iDecoder = NULL; |
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172 |
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173 delete iBitmap; |
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174 iBitmap = NULL; |
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175 delete iBuffer; // we own the buffer |
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176 iBuffer = NULL; |
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177 } |
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178 |
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179 |
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180 // ----------------------------------------------------------------------------- |
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181 // CThumbnailImageDecoderv3::DoCancel() |
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182 // ----------------------------------------------------------------------------- |
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183 // |
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184 void CThumbnailImageDecoderv3::DoCancel() |
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185 { |
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186 if ( iDecoder ) |
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187 { |
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188 iDecoder->Cancel(); |
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189 delete iDecoder; |
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190 iDecoder = NULL; |
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191 } |
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192 |
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193 delete iBitmap; |
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194 iBitmap = NULL; |
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195 delete iBuffer; // we own the buffer |
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196 iBuffer = NULL; |
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197 } |
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198 |
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199 |
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200 // ----------------------------------------------------------------------------- |
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201 // CThumbnailImageDecoderv3::RunL() |
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202 // ----------------------------------------------------------------------------- |
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203 // |
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204 void CThumbnailImageDecoderv3::RunL() |
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205 { |
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206 // This call takes ownership of iBitmap |
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207 iObserver->ThumbnailProviderReady( iStatus.Int(), iBitmap, iOriginalSize, EFalse, EFalse ); |
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208 |
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209 iBitmap = NULL; // owned by server now |
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210 delete iBuffer; // we own the buffer |
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211 iBuffer = NULL; |
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212 |
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213 Release(); |
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214 } |
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215 |
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216 |
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217 // ----------------------------------------------------------------------------- |
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218 // CThumbnailImageDecoderv3::CreateDecoderL |
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219 // Creates image decoder |
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220 // ----------------------------------------------------------------------------- |
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221 // |
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222 void CThumbnailImageDecoderv3::CreateDecoderL() |
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223 { |
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224 delete iDecoder; |
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225 iDecoder = NULL; |
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226 |
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227 CImageDecoder::TOptions options = ( CImageDecoder::TOptions )( |
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228 CImageDecoder::EOptionNoDither ); |
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229 |
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230 TRAPD( decErr, iDecoder = CExtJpegDecoder::DataNewL( |
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231 CExtJpegDecoder::EHwImplementation, iFs, *iBuffer, options )); |
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232 |
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233 if ( decErr != KErrNone ) |
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234 { |
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235 TN_DEBUG2( "CThumbnailImageDecoderv3::CreateDecoderL() - HW CExtJpegDecoder failed %d", decErr); |
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236 OstTrace1( TRACE_NORMAL, CTHUMBNAILIMAGEDECODERV3_CREATEDECODERL, "CThumbnailImageDecoderv3::CreateDecoderL - HW CExtJpegDecoder failed;decErr=%d", decErr ); |
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237 |
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238 LeaveIfCorruptL( decErr ); |
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239 |
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240 TRAP( decErr, iDecoder = CExtJpegDecoder::DataNewL( |
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241 CExtJpegDecoder::ESwImplementation, iFs, *iBuffer, options )); |
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242 |
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243 if ( decErr != KErrNone ) |
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244 { |
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245 TN_DEBUG2( "CThumbnailImageDecoderv3::CreateDecoderL() - SW CExtJpegDecoder failed %d", decErr); |
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246 OstTrace1( TRACE_NORMAL, DUP1_CTHUMBNAILIMAGEDECODERV3_CREATEDECODERL, "CThumbnailImageDecoderv3::CreateDecoderL - SW CExtJpegDecoder failed;decErr=%d", decErr ); |
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247 |
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248 LeaveIfCorruptL( decErr ); |
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249 // don't force any mime type |
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250 TRAPD( decErr, iDecoder = CImageDecoder::DataNewL( iFs, *iBuffer, options ) ); |
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251 if ( decErr != KErrNone ) |
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252 { |
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253 Release(); |
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254 TN_DEBUG2( "CThumbnailImageDecoderv3::CreateDecoderL() - CImageDecoder error %d", decErr ); |
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255 OstTrace1( TRACE_NORMAL, DUP2_CTHUMBNAILIMAGEDECODERV3_CREATEDECODERL, "CThumbnailImageDecoderv3::CreateDecoderL - CImageDecoder error;decErr=%d", decErr ); |
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256 |
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257 User::Leave( decErr ); |
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258 } |
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259 |
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260 TN_DEBUG1( "CThumbnailImageDecoderv3::CreateDecoderL() - CImageDecoder created" ); |
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261 OstTrace0( TRACE_NORMAL, DUP3_CTHUMBNAILIMAGEDECODERV3_CREATEDECODERL, "CThumbnailImageDecoderv3::CreateDecoderL - CImageDecoder created" ); |
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262 } |
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263 else |
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264 { |
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265 TN_DEBUG1( "CThumbnailImageDecoderv3::CreateDecoderL() - SW CExtJpegDecoder created" ); |
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266 OstTrace0( TRACE_NORMAL, DUP4_CTHUMBNAILIMAGEDECODERV3_CREATEDECODERL, "CThumbnailImageDecoderv3::CreateDecoderL - SW CExtJpegDecoder created" ); |
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267 } |
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268 } |
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269 else |
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270 { |
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271 TN_DEBUG1( "CThumbnailImageDecoderv3::CreateDecoderL() - HW CExtJpegDecoder created" ); |
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272 OstTrace0( TRACE_NORMAL, DUP5_CTHUMBNAILIMAGEDECODERV3_CREATEDECODERL, "CThumbnailImageDecoderv3::CreateDecoderL - HW CExtJpegDecoder created" ); |
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273 } |
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274 } |
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275 |
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276 |
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277 // ----------------------------------------------------------------------------- |
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278 // CThumbnailImageDecoderv3::CreateExifDecoderL() |
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279 // Returns size of original image |
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280 // ----------------------------------------------------------------------------- |
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281 // |
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282 const TSize& CThumbnailImageDecoderv3::OriginalSize()const |
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283 { |
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284 return iOriginalSize; |
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285 } |
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286 |
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287 // ----------------------------------------------------------------------------- |
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288 // CThumbnailImageDecoder3::LeaveIfCorruptL() |
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289 // Leave is image is corrupted |
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290 // ----------------------------------------------------------------------------- |
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291 // |
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292 void CThumbnailImageDecoderv3::LeaveIfCorruptL(const TInt aError ) |
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293 { |
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294 //no sense to try other codecs if image is corrupted |
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295 if( aError == KErrCorrupt || aError == KErrUnderflow) |
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296 { |
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297 Release(); |
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298 User::Leave( aError ); |
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299 } |
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300 } |
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301 |
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302 //End of file |
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