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1 // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 /** @file |
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17 @internalComponent */ |
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18 #include <iclexif.h> |
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19 #include <exifutility.h> |
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20 #include <icl/icl_uids.hrh> |
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21 #ifdef SYMBIAN_ENABLE_SPLIT_HEADERS |
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22 #include <icl/icl_uids_const.hrh> |
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23 #include <icl/icl_uids_def.hrh> |
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24 #endif |
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25 #include "ExifImageDisplayPanic.h" |
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26 |
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27 #include "ExifImageDisplay.h" |
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28 |
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29 _LIT(KExifPanicCat, "ExifImageDisplay"); |
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30 |
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31 CExifImageDisplayPlugin* CExifImageDisplayPlugin::NewL() |
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32 { |
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33 CExifImageDisplayPlugin* self = new(ELeave) CExifImageDisplayPlugin(); |
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34 CleanupStack::PushL(self); |
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35 self->ConstructL(); |
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36 CleanupStack::Pop(self); |
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37 return self; |
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38 } |
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39 |
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40 CExifImageDisplayPlugin::~CExifImageDisplayPlugin() |
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41 { |
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42 } |
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43 |
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44 CExifImageDisplayPlugin::CExifImageDisplayPlugin(): |
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45 CGenericImageDisplayPlugin(KExifPanicCat) |
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46 { |
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47 iMaxUnscaledSize.SetSize(160,120); |
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48 iMaxReductionFactor = KMaxReductionFactor; |
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49 } |
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50 |
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51 void CExifImageDisplayPlugin::AfterOpenL() |
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52 { |
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53 GetExifMetadataReader(iExifReader); |
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54 } |
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55 |
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56 TInt CExifImageDisplayPlugin::ExtensionInterface(TUid aIFaceUid, TAny*& aIFacePtr) |
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57 { |
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58 if (KErrNone == CGenericImageDisplayPlugin::ExtensionInterface(aIFaceUid, aIFacePtr)) |
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59 { |
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60 return KErrNone; |
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61 } |
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62 if (aIFaceUid != KExifImageDisplayExtensionUid) |
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63 { |
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64 return KErrNotSupported; |
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65 } |
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66 aIFacePtr = static_cast<MExifImageDisplayExtension*>(this); |
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67 return KErrNone; |
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68 } |
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69 |
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70 TUint CExifImageDisplayPlugin::ImageStatus() const |
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71 { |
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72 return CImageDisplay::EImageSingleFrame | (ThumbnailExists()?CImageDisplay::EImageHasThumbnail:0); |
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73 } |
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74 |
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75 TInt CExifImageDisplayPlugin::GetExifMetadataReader(MExifMetadataReader*& aPtr) |
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76 { |
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77 // it should be safe since we've asked for EXIF decoder during decoder creation |
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78 aPtr=static_cast<CJPEGExifDecoder*>(iDecoder)->ExifMetadata(); |
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79 return (aPtr==NULL)? KErrNotSupported : KErrNone; |
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80 } |
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81 |
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82 const TUid CExifImageDisplayPlugin::Uid() const |
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83 { |
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84 return KExifImageDisplayExtensionUid; |
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85 } |
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86 |
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87 void CExifImageDisplayPlugin::Release() |
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88 { |
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89 } |
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90 |
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91 TInt CExifImageDisplayPlugin::SetScaleQuality(TInt aQualityLevel) |
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92 { |
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93 return DoSetScaleQuality(aQualityLevel); |
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94 } |
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95 |
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96 TInt CExifImageDisplayPlugin::SetMaximumReductionFactor(TInt aMaxReductionFactor) |
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97 { |
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98 return DoSetMaximumReductionFactor(aMaxReductionFactor); |
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99 } |
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100 |
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101 TBool CExifImageDisplayPlugin::ThumbnailExists() const |
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102 { |
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103 if (iExifReader==NULL) |
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104 { |
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105 return EFalse; |
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106 } |
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107 TExifReaderUtility util(iExifReader); |
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108 TUint16 dummy; |
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109 return (KErrNone == util.GetThumbCompression(dummy)); |
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110 } |
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111 |
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112 TUint CExifImageDisplayPlugin::EffectiveRotation() const |
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113 { |
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114 TUint rotation=Options() & ( CImageDisplay::EOptionMirrorVertical | |
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115 (CImageDisplay::EOptionMirrorVertical - CImageDisplay::EOptionRotateCw90) ); |
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116 |
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117 // calculate autorotation option for main image |
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118 if ( (Options() & CImageDisplay::EOptionAutoRotate) && iExifReader) |
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119 { |
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120 TExifReaderUtility utility(iExifReader); |
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121 TUint16 orientation(0); |
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122 TInt err=KErrNotFound; |
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123 if (ThumbnailRequested()) |
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124 { |
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125 err=utility.GetThumbOrientation(orientation); |
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126 } |
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127 if (err!=KErrNone) |
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128 { |
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129 err = utility.GetOrientation(orientation); |
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130 } |
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131 if (KErrNone == err && orientation>0 && orientation<9) |
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132 { |
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133 // auto-rotation table using the EXIF 2.2 page 18 |
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134 static const TUint |
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135 KOrientation2Rotation[8]= { |
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136 0, // 1 |
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137 CImageDisplay::EOptionMirrorVertical, // 2 |
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138 CImageDisplay::EOptionRotateCw180, // 3 |
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139 CImageDisplay::EOptionMirrorHorizontal, // 4 |
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140 CImageDisplay::EOptionRotateCw90|CImageDisplay::EOptionMirrorVertical, // 5 |
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141 CImageDisplay::EOptionRotateCw90, // 6 |
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142 CImageDisplay::EOptionRotateCw270|CImageDisplay::EOptionMirrorVertical, // 7 |
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143 CImageDisplay::EOptionRotateCw270, // 8 |
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144 }; |
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145 rotation = KOrientation2Rotation[orientation-1]; |
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146 } |
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147 } |
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148 return rotation; |
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149 } |
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150 |
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151 TUid CExifImageDisplayPlugin::RequiredImageClass() const |
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152 { |
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153 return TUid::Uid(KUidICLJpegEXIFInterface); |
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154 } |
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155 |