--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/engine/collectionframework/thumbnailcreator/src/glxtnzoomedimagetask.cpp Fri Mar 19 09:28:59 2010 +0200
@@ -0,0 +1,256 @@
+/*
+* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: Task to generate a cropped thumbnail for a JPEG image.
+*
+*/
+
+
+
+/**
+ * @internal reviewed 31/07/2007 by Simon Brooks
+ */
+
+#include "glxtnzoomedimagetask.h"
+
+#include <fbs.h>
+#include <glxassert.h>
+#include <glxlog.h>
+#include <IclExtJpegApi.h> // For CExtJpegDecoder
+#include <glxtracer.h>
+
+#include "glxtnfileinfo.h"
+#include "glxtnfileutility.h"
+#include "glxtnthumbnailrequest.h"
+#include "mglxtnthumbnailcreatorclient.h"
+
+// -----------------------------------------------------------------------------
+// NewL
+// -----------------------------------------------------------------------------
+//
+CGlxtnZoomedImageTask* CGlxtnZoomedImageTask::NewL(
+ const TGlxThumbnailRequest& aRequestInfo,
+ CGlxtnFileUtility& aFileUtility, MGlxtnThumbnailCreatorClient& aClient)
+ {
+ TRACER("CGlxtnZoomedImageTask* CGlxtnZoomedImageTask::NewL( const TGlxThumbnailRequest& aRequestInfo, CGlxtnFileUtility& aFileUtility, MGlxtnThumbnailCreatorClient& aClient)");
+ CGlxtnZoomedImageTask* task = new (ELeave) CGlxtnZoomedImageTask(
+ aRequestInfo, aFileUtility, aClient);
+ CleanupStack::PushL(task);
+ task->ConstructL(aRequestInfo.iBitmapHandle);
+ CleanupStack::Pop( task );
+ return task;
+ }
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CGlxtnZoomedImageTask::~CGlxtnZoomedImageTask()
+ {
+ TRACER("CGlxtnZoomedImageTask::~CGlxtnZoomedImageTask()");
+ delete iDecoder;
+ delete iInfo;
+ delete iThumbnail;
+ }
+
+// -----------------------------------------------------------------------------
+// Constructor
+// -----------------------------------------------------------------------------
+//
+CGlxtnZoomedImageTask::CGlxtnZoomedImageTask(
+ const TGlxThumbnailRequest& aRequestInfo,
+ CGlxtnFileUtility& aFileUtility,
+ MGlxtnThumbnailCreatorClient& aClient) :
+ CGlxtnClientTask(KGlxtnTaskIdZoomedThumbnail, aRequestInfo.iId, aClient),
+ iFileUtility(aFileUtility), iRequestedSize(aRequestInfo.iSizeClass),
+ iCroppingRect(aRequestInfo.iCroppingRect), iFilter(aRequestInfo.iFilter),
+ iDrmAllowed(aRequestInfo.iDrmAllowed)
+ {
+ TRACER("CGlxtnZoomedImageTask::CGlxtnZoomedImageTask( const TGlxThumbnailRequest& aRequestInfo, CGlxtnFileUtility& aFileUtility, MGlxtnThumbnailCreatorClient& aClient)");
+ }
+
+// -----------------------------------------------------------------------------
+// ConstructL
+// -----------------------------------------------------------------------------
+//
+void CGlxtnZoomedImageTask::ConstructL(TInt aBitmapHandle)
+ {
+ TRACER("void CGlxtnZoomedImageTask::ConstructL(TInt aBitmapHandle)");
+ // Duplicate the client's bitmap
+ iThumbnail = new (ELeave) CFbsBitmap();
+ User::LeaveIfError(iThumbnail->Duplicate(aBitmapHandle));
+ }
+
+// -----------------------------------------------------------------------------
+// DoStartL
+// -----------------------------------------------------------------------------
+//
+TBool CGlxtnZoomedImageTask::DoStartL(TRequestStatus& aStatus)
+ {
+ TRACER("TBool CGlxtnZoomedImageTask::DoStartL(TRequestStatus& aStatus)");
+ iInfo = new (ELeave) CGlxtnFileInfo;
+ Client().FetchFileInfoL(iInfo, ItemId(), &aStatus);
+ iState = EStateFetchingUri;
+
+ return ETrue;
+ }
+
+// -----------------------------------------------------------------------------
+// DoCancel
+// -----------------------------------------------------------------------------
+//
+void CGlxtnZoomedImageTask::DoCancel()
+ {
+ TRACER("void CGlxtnZoomedImageTask::DoCancel()");
+ if ( EStateFetchingUri == iState )
+ {
+ Client().CancelFetchUri(ItemId());
+ }
+ if ( iDecoder )
+ {
+ iDecoder->Cancel();
+ }
+
+ iFileUtility.ClearBadFileMarker();
+ }
+
+// -----------------------------------------------------------------------------
+// DoRunL
+// -----------------------------------------------------------------------------
+//
+TBool CGlxtnZoomedImageTask::DoRunL(TRequestStatus& aStatus)
+ {
+ TRACER("TBool CGlxtnZoomedImageTask::DoRunL(TRequestStatus& aStatus)");
+ TInt error = aStatus.Int();
+ TBool active = EFalse;
+
+ if ( KErrNone == error )
+ {
+ switch ( iState )
+ {
+ case EStateFetchingUri:
+ {
+ User::LeaveIfNull(iInfo);
+ iFileUtility.CheckBadFileListL( iInfo->FilePath() );
+
+ TBool video;
+ iInfo->IdentifyFileL(video, iProtected);
+ if ( iProtected && !iDrmAllowed )
+ {
+ User::Leave(KErrAccessDenied);
+ }
+
+ DecodePartialImageL(aStatus);
+ active = ETrue;
+ iState = EStateDecoding;
+ }
+ break;
+
+ case EStateDecoding:
+ // Nothing to do
+ break;
+
+ default:
+ GLX_ASSERT_ALWAYS( EFalse, Panic( EGlxPanicIllegalState ),
+ "CGlxtnZoomedImageTask: Illegal state" );
+ break;
+ }
+ }
+
+ if ( !active )
+ {
+ iFileUtility.ClearBadFileMarker();
+ Client().ThumbnailFetchComplete(ItemId(),
+ EGlxThumbnailQualityHigh, error);
+ }
+
+ return active;
+ }
+
+// -----------------------------------------------------------------------------
+// DoRunError
+// -----------------------------------------------------------------------------
+//
+TBool CGlxtnZoomedImageTask::DoRunError(TInt aError)
+ {
+ TRACER("TBool CGlxtnZoomedImageTask::DoRunError(TInt aError)");
+ iFileUtility.ClearBadFileMarker();
+ Client().ThumbnailFetchComplete(ItemId(), EGlxThumbnailQualityHigh, aError);
+
+ return EFalse;
+ }
+
+// -----------------------------------------------------------------------------
+// DecodePartialImageL
+// -----------------------------------------------------------------------------
+//
+void CGlxtnZoomedImageTask::DecodePartialImageL(TRequestStatus& aStatus)
+ {
+ TRACER("void CGlxtnZoomedImageTask::DecodePartialImageL(TRequestStatus& aStatus)");
+ TRAPD(err, CreateDecoderL(CExtJpegDecoder::EHwImplementation));
+ if ( KErrNone != err )
+ {
+ CreateDecoderL(CExtJpegDecoder::ESwImplementation);
+ }
+
+ TSize sourceSize(iDecoder->FrameInfo().iOverallSizeInPixels);
+ if ( 0 == sourceSize.iWidth || 0 == sourceSize.iHeight )
+ {
+ User::Leave(KErrCorrupt);
+ }
+
+ iCroppingRect.Intersection(TRect(sourceSize));
+ if ( iCroppingRect.IsEmpty() )
+ {
+ User::Leave(KErrArgument);
+ }
+
+ // Find max scaling factor which won't make image smaller than target size
+ TInt shift = 3;
+ while ( shift
+ && (sourceSize.iWidth >> shift) < iRequestedSize.iWidth
+ && (sourceSize.iHeight >> shift) < iRequestedSize.iHeight )
+ {
+ shift--;
+ }
+ TInt fudge = (1 << shift) - 1; // Used to "round up" the scaled values
+ TSize loadSize((iCroppingRect.Width() + fudge) >> shift,
+ (iCroppingRect.Height() + fudge) >> shift);
+
+ // Resize empty bitmap to required size
+ User::LeaveIfError(iThumbnail->Resize(loadSize));
+
+ iDecoder->SetCroppingL(iCroppingRect);
+ iDecoder->Convert(&aStatus, *iThumbnail);
+ }
+
+// -----------------------------------------------------------------------------
+// CreateDecoderL
+// -----------------------------------------------------------------------------
+//
+void CGlxtnZoomedImageTask::CreateDecoderL(TInt aDecoderType)
+ {
+ TRACER("void CGlxtnZoomedImageTask::CreateDecoderL(TInt aDecoderType)");
+ delete iDecoder;
+ iDecoder = NULL;
+ iDecoder = CExtJpegDecoder::FileNewL(
+ static_cast<CExtJpegDecoder::TDecoderType>(aDecoderType),
+ iFileUtility.FsSession(), iInfo->FilePath());
+
+ if ( !(CExtJpegDecoder::ECapCropping & iDecoder->CapabilitiesL()) )
+ {
+ User::Leave(KErrNotSupported);
+ }
+ }
+
+// End of File