/*
* Copyright (c) 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: ?Description
*
*/
#include "glximagedecoder.h"
#include "glximagedecoderwrapper.h"
#include <bitmaptransforms.h>
#include <imageconversion.h>
#include <IclExtJpegApi.h> // For CExtJpegDecoder
#include <e32math.h>
#include <apgcli.h>
_LIT(KMimeJpeg,"image/jpeg");
_LIT(KMimeJpg,"image/jpg");
// ---------------------------------------------------------------------------
// Two-phased constructor.
// ---------------------------------------------------------------------------
//
CGlxImageDecoder* CGlxImageDecoder::NewL(GlxImageDecoderWrapper* decoderWrapper)
{
CGlxImageDecoder* self = new(ELeave)CGlxImageDecoder();
CleanupStack::PushL(self);
self->ConstructL(decoderWrapper);
CleanupStack::Pop(self);
return self;
}
// ---------------------------------------------------------------------------
// Constructor
// ---------------------------------------------------------------------------
//
CGlxImageDecoder::CGlxImageDecoder()
:CActive( EPriorityStandard )
{
}
// ---------------------------------------------------------------------------
// Destructor
// ---------------------------------------------------------------------------
//
CGlxImageDecoder::~CGlxImageDecoder()
{
iFs.Close();
Cancel();
if (iImageDecoder)
{
delete iImageDecoder;
iImageDecoder = NULL;
}
if(iBitmap) {
delete iBitmap;
iBitmap = NULL;
}
}
// ---------------------------------------------------------------------------
// ConstructL
// ---------------------------------------------------------------------------
void CGlxImageDecoder::ConstructL(GlxImageDecoderWrapper* decoderWrapper)
{
iDecoderWrapper = decoderWrapper;
User::LeaveIfError(iFs.Connect());
CActiveScheduler::Add( this );
}
// ---------------------------------------------------------------------------
// DoDecodeImageL
// ---------------------------------------------------------------------------
QSizeF CGlxImageDecoder::DecodeImageL(QString aSourceFileName)
{
//convert the argument to Symbian Format
TPtrC16 sourceFileName(reinterpret_cast<const TUint16*>(aSourceFileName.utf16()));
if (iImageDecoder)
{
iImageDecoder->Cancel();
delete iImageDecoder;
iImageDecoder = NULL;
}
TRAPD( err, iImageDecoder = CExtJpegDecoder::FileNewL(
CExtJpegDecoder::EHwImplementation, iFs, sourceFileName, CImageDecoder::EOptionAlwaysThread ) );
if ( KErrNone != err )
{
TRAP(err,iImageDecoder = CExtJpegDecoder::FileNewL(
CExtJpegDecoder::ESwImplementation, iFs, sourceFileName, CImageDecoder::EOptionAlwaysThread ) );
if ( KErrNone != err )
{
// Not a JPEG - use standard decoder
iImageDecoder = CImageDecoder::FileNewL( iFs, sourceFileName, CImageDecoder::EOptionAlwaysThread );
}
}
TSize imageSize = iImageDecoder->FrameInfo().iOverallSizeInPixels;
//limit size to 1MP
TSize decodeSize = imageSize;
TReal pixelsInImage = imageSize.iWidth*imageSize.iHeight;
if(pixelsInImage > KTargetSize)
{
TReal compressionFactor = 1;
TInt err = Math::Sqrt(compressionFactor, (KTargetSize/pixelsInImage) );
if(err != KErrNone)
{
compressionFactor = .1;
}
decodeSize = TSize(imageSize.iWidth * compressionFactor, imageSize.iHeight * compressionFactor);
}
//if an image is converted to Pixmap with any of its dimension > 2048
//the conversion will fail so limiting dimensions to 2000
//on 2048 there is a buffer corruption so display image is distorted
if(decodeSize.iWidth > KMaxDimensionLimit ||decodeSize.iHeight > KMaxDimensionLimit)
{
QSize finalSize(decodeSize.iWidth, decodeSize.iHeight);
finalSize.scale(KMaxDimensionLimit, KMaxDimensionLimit, Qt::KeepAspectRatio);
decodeSize = TSize(finalSize.width(), finalSize.height());
}
//clear the existing Bitmap
if(iBitmap)
{
delete iBitmap;
iBitmap = NULL;
}
// create the destination bitmap and pass it on to the decoder
if(!iBitmap)
{
iBitmap = new (ELeave) CFbsBitmap();
decodeSize = ReCalculateSizeL(aSourceFileName, decodeSize);
iBitmap->Create( decodeSize,EColor16MU);
iImageDecoder->Convert( &iStatus, *iBitmap );
SetActive();
}
return QSizeF(decodeSize.iWidth,decodeSize.iHeight) ;
}
// -----------------------------------------------------------------------------
// DoesMimeTypeNeedsRecalculateL()
// -----------------------------------------------------------------------------
//
TBool CGlxImageDecoder::DoesMimeTypeNeedsRecalculateL(QString aSourceFileName){
RApaLsSession session;
TDataType mimeType;
TUid uid;
User::LeaveIfError( session.Connect() );
CleanupClosePushL( session );
TPtrC16 sourceFileName(reinterpret_cast<const TUint16*>(aSourceFileName.utf16()));
User::LeaveIfError( session.AppForDocument( sourceFileName, uid, mimeType ) );
CleanupStack::PopAndDestroy(&session);
if (mimeType.Des().Compare(KMimeJpeg)==0 ||
mimeType.Des().Compare(KMimeJpg)==0){
return EFalse;
}
else{
return ETrue;
}
}
// -----------------------------------------------------------------------------
// ReCalculateSize
// -----------------------------------------------------------------------------
TSize CGlxImageDecoder::ReCalculateSizeL(QString aSourceFileName, TSize aDestSize){
if(DoesMimeTypeNeedsRecalculateL(aSourceFileName)){
TSize fullFrameSize = iImageDecoder->FrameInfo().iOverallSizeInPixels;
// calculate the reduction factor on what size we need
TInt reductionFactor = iImageDecoder->ReductionFactor(fullFrameSize, aDestSize);
// get the reduced size onto destination size
TSize destSize;
User::LeaveIfError(iImageDecoder->ReducedSize(fullFrameSize, reductionFactor, destSize));
return destSize;
}
else{
return aDestSize;
}
}
// ---------------------------------------------------------------------------
// RunL
// ---------------------------------------------------------------------------
//
void CGlxImageDecoder::RunL()
{
if( iStatus == KErrNone )
{
iDecoderWrapper->decodedImageAvailable();
}
delete iImageDecoder;
iImageDecoder = NULL;
iFs.Close();
}
// ---------------------------------------------------------------------------
// DoCancel
// ---------------------------------------------------------------------------
//
void CGlxImageDecoder::DoCancel()
{
if(iImageDecoder)
{
iImageDecoder->Cancel();
delete iImageDecoder;
iImageDecoder = NULL;
}
iFs.Close();
if(iBitmap)
{
delete iBitmap;
iBitmap = NULL;
}
//todo add cleanup logic for pixmap
}
// ---------------------------------------------------------------------------
// GetPixmap
// ---------------------------------------------------------------------------
//
QPixmap CGlxImageDecoder::GetPixmap()
{
if(iBitmap)
{
iDecodedPixmap = QPixmap::fromSymbianCFbsBitmap(iBitmap);
delete iBitmap;
iBitmap = NULL;
}
return iDecodedPixmap;
}
// ---------------------------------------------------------------------------
// ResetDecoder
// ---------------------------------------------------------------------------
//
void CGlxImageDecoder::ResetDecoder()
{
Cancel();
if(iBitmap) {
delete iBitmap;
iBitmap = NULL;
}
iDecodedPixmap = QPixmap();
}