/*
* 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