author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 08:45:44 +0200 | |
changeset 0 | 4e91876724a2 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Task to generate a cropped thumbnail for a JPEG image. |
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* |
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*/ |
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/** |
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* @internal reviewed 31/07/2007 by Simon Brooks |
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*/ |
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#include "glxtnzoomedimagetask.h" |
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#include <fbs.h> |
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#include <glxassert.h> |
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#include <glxlog.h> |
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#include <IclExtJpegApi.h> // For CExtJpegDecoder |
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#include <glxtracer.h> |
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#include "glxtnfileinfo.h" |
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#include "glxtnfileutility.h" |
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#include "glxtnthumbnailrequest.h" |
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#include "mglxtnthumbnailcreatorclient.h" |
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// ----------------------------------------------------------------------------- |
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// NewL |
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// ----------------------------------------------------------------------------- |
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// |
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CGlxtnZoomedImageTask* CGlxtnZoomedImageTask::NewL( |
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const TGlxThumbnailRequest& aRequestInfo, |
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CGlxtnFileUtility& aFileUtility, MGlxtnThumbnailCreatorClient& aClient) |
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{ |
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TRACER("CGlxtnZoomedImageTask* CGlxtnZoomedImageTask::NewL( const TGlxThumbnailRequest& aRequestInfo, CGlxtnFileUtility& aFileUtility, MGlxtnThumbnailCreatorClient& aClient)"); |
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CGlxtnZoomedImageTask* task = new (ELeave) CGlxtnZoomedImageTask( |
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aRequestInfo, aFileUtility, aClient); |
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CleanupStack::PushL(task); |
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task->ConstructL(aRequestInfo.iBitmapHandle); |
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CleanupStack::Pop( task ); |
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return task; |
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} |
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// ----------------------------------------------------------------------------- |
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// Destructor |
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// ----------------------------------------------------------------------------- |
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// |
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CGlxtnZoomedImageTask::~CGlxtnZoomedImageTask() |
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{ |
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TRACER("CGlxtnZoomedImageTask::~CGlxtnZoomedImageTask()"); |
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delete iDecoder; |
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delete iInfo; |
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delete iThumbnail; |
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} |
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// ----------------------------------------------------------------------------- |
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// Constructor |
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// ----------------------------------------------------------------------------- |
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// |
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CGlxtnZoomedImageTask::CGlxtnZoomedImageTask( |
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const TGlxThumbnailRequest& aRequestInfo, |
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CGlxtnFileUtility& aFileUtility, |
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MGlxtnThumbnailCreatorClient& aClient) : |
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CGlxtnClientTask(KGlxtnTaskIdZoomedThumbnail, aRequestInfo.iId, aClient), |
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iFileUtility(aFileUtility), iRequestedSize(aRequestInfo.iSizeClass), |
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iCroppingRect(aRequestInfo.iCroppingRect), iFilter(aRequestInfo.iFilter), |
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iDrmAllowed(aRequestInfo.iDrmAllowed) |
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{ |
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TRACER("CGlxtnZoomedImageTask::CGlxtnZoomedImageTask( const TGlxThumbnailRequest& aRequestInfo, CGlxtnFileUtility& aFileUtility, MGlxtnThumbnailCreatorClient& aClient)"); |
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} |
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// ----------------------------------------------------------------------------- |
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// ConstructL |
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// ----------------------------------------------------------------------------- |
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// |
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void CGlxtnZoomedImageTask::ConstructL(TInt aBitmapHandle) |
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{ |
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TRACER("void CGlxtnZoomedImageTask::ConstructL(TInt aBitmapHandle)"); |
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// Duplicate the client's bitmap |
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iThumbnail = new (ELeave) CFbsBitmap(); |
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User::LeaveIfError(iThumbnail->Duplicate(aBitmapHandle)); |
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} |
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// ----------------------------------------------------------------------------- |
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// DoStartL |
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// ----------------------------------------------------------------------------- |
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// |
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TBool CGlxtnZoomedImageTask::DoStartL(TRequestStatus& aStatus) |
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{ |
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TRACER("TBool CGlxtnZoomedImageTask::DoStartL(TRequestStatus& aStatus)"); |
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|
102 |
iInfo = new (ELeave) CGlxtnFileInfo; |
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|
103 |
Client().FetchFileInfoL(iInfo, ItemId(), &aStatus); |
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|
104 |
iState = EStateFetchingUri; |
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|
105 |
|
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|
106 |
return ETrue; |
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107 |
} |
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|
108 |
|
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109 |
// ----------------------------------------------------------------------------- |
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110 |
// DoCancel |
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111 |
// ----------------------------------------------------------------------------- |
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112 |
// |
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113 |
void CGlxtnZoomedImageTask::DoCancel() |
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114 |
{ |
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115 |
TRACER("void CGlxtnZoomedImageTask::DoCancel()"); |
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116 |
if ( EStateFetchingUri == iState ) |
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117 |
{ |
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118 |
Client().CancelFetchUri(ItemId()); |
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119 |
} |
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120 |
if ( iDecoder ) |
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121 |
{ |
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122 |
iDecoder->Cancel(); |
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123 |
} |
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124 |
|
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125 |
iFileUtility.ClearBadFileMarker(); |
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126 |
} |
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127 |
|
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128 |
// ----------------------------------------------------------------------------- |
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129 |
// DoRunL |
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130 |
// ----------------------------------------------------------------------------- |
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131 |
// |
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132 |
TBool CGlxtnZoomedImageTask::DoRunL(TRequestStatus& aStatus) |
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133 |
{ |
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134 |
TRACER("TBool CGlxtnZoomedImageTask::DoRunL(TRequestStatus& aStatus)"); |
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135 |
TInt error = aStatus.Int(); |
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136 |
TBool active = EFalse; |
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137 |
|
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138 |
if ( KErrNone == error ) |
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139 |
{ |
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140 |
switch ( iState ) |
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141 |
{ |
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142 |
case EStateFetchingUri: |
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143 |
{ |
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144 |
User::LeaveIfNull(iInfo); |
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145 |
iFileUtility.CheckBadFileListL( iInfo->FilePath() ); |
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|
146 |
|
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147 |
TBool video; |
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148 |
iInfo->IdentifyFileL(video, iProtected); |
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149 |
if ( iProtected && !iDrmAllowed ) |
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150 |
{ |
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151 |
User::Leave(KErrAccessDenied); |
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152 |
} |
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|
153 |
|
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154 |
DecodePartialImageL(aStatus); |
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155 |
active = ETrue; |
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156 |
iState = EStateDecoding; |
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157 |
} |
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158 |
break; |
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|
159 |
|
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160 |
case EStateDecoding: |
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161 |
// Nothing to do |
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162 |
break; |
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|
163 |
|
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164 |
default: |
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|
165 |
GLX_ASSERT_ALWAYS( EFalse, Panic( EGlxPanicIllegalState ), |
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|
166 |
"CGlxtnZoomedImageTask: Illegal state" ); |
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|
167 |
break; |
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|
168 |
} |
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|
169 |
} |
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|
170 |
|
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|
171 |
if ( !active ) |
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|
172 |
{ |
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|
173 |
iFileUtility.ClearBadFileMarker(); |
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|
174 |
Client().ThumbnailFetchComplete(ItemId(), |
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|
175 |
EGlxThumbnailQualityHigh, error); |
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|
176 |
} |
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|
177 |
|
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|
178 |
return active; |
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|
179 |
} |
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|
180 |
|
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|
181 |
// ----------------------------------------------------------------------------- |
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|
182 |
// DoRunError |
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183 |
// ----------------------------------------------------------------------------- |
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184 |
// |
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|
185 |
TBool CGlxtnZoomedImageTask::DoRunError(TInt aError) |
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|
186 |
{ |
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|
187 |
TRACER("TBool CGlxtnZoomedImageTask::DoRunError(TInt aError)"); |
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|
188 |
iFileUtility.ClearBadFileMarker(); |
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|
189 |
Client().ThumbnailFetchComplete(ItemId(), EGlxThumbnailQualityHigh, aError); |
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|
190 |
|
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|
191 |
return EFalse; |
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192 |
} |
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|
193 |
|
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|
194 |
// ----------------------------------------------------------------------------- |
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|
195 |
// DecodePartialImageL |
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196 |
// ----------------------------------------------------------------------------- |
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197 |
// |
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198 |
void CGlxtnZoomedImageTask::DecodePartialImageL(TRequestStatus& aStatus) |
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|
199 |
{ |
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|
200 |
TRACER("void CGlxtnZoomedImageTask::DecodePartialImageL(TRequestStatus& aStatus)"); |
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|
201 |
TRAPD(err, CreateDecoderL(CExtJpegDecoder::EHwImplementation)); |
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|
202 |
if ( KErrNone != err ) |
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|
203 |
{ |
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204 |
CreateDecoderL(CExtJpegDecoder::ESwImplementation); |
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205 |
} |
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|
206 |
|
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|
207 |
TSize sourceSize(iDecoder->FrameInfo().iOverallSizeInPixels); |
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if ( 0 == sourceSize.iWidth || 0 == sourceSize.iHeight ) |
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{ |
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User::Leave(KErrCorrupt); |
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} |
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|
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iCroppingRect.Intersection(TRect(sourceSize)); |
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if ( iCroppingRect.IsEmpty() ) |
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{ |
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User::Leave(KErrArgument); |
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} |
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|
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// Find max scaling factor which won't make image smaller than target size |
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TInt shift = 3; |
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while ( shift |
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&& (sourceSize.iWidth >> shift) < iRequestedSize.iWidth |
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&& (sourceSize.iHeight >> shift) < iRequestedSize.iHeight ) |
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{ |
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shift--; |
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} |
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TInt fudge = (1 << shift) - 1; // Used to "round up" the scaled values |
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TSize loadSize((iCroppingRect.Width() + fudge) >> shift, |
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(iCroppingRect.Height() + fudge) >> shift); |
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|
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// Resize empty bitmap to required size |
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User::LeaveIfError(iThumbnail->Resize(loadSize)); |
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|
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iDecoder->SetCroppingL(iCroppingRect); |
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iDecoder->Convert(&aStatus, *iThumbnail); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CreateDecoderL |
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// ----------------------------------------------------------------------------- |
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// |
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void CGlxtnZoomedImageTask::CreateDecoderL(TInt aDecoderType) |
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{ |
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TRACER("void CGlxtnZoomedImageTask::CreateDecoderL(TInt aDecoderType)"); |
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delete iDecoder; |
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iDecoder = NULL; |
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iDecoder = CExtJpegDecoder::FileNewL( |
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static_cast<CExtJpegDecoder::TDecoderType>(aDecoderType), |
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iFileUtility.FsSession(), iInfo->FilePath()); |
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|
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if ( !(CExtJpegDecoder::ECapCropping & iDecoder->CapabilitiesL()) ) |
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{ |
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User::Leave(KErrNotSupported); |
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} |
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} |
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|
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// End of File |