/*
* 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>
// ---------------------------------------------------------------------------
// 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::EOptionAutoRotate ) );
if ( KErrNone != err )
{
TRAP(err,iImageDecoder = CExtJpegDecoder::FileNewL(
CExtJpegDecoder::ESwImplementation, iFs, sourceFileName, CImageDecoder::EOptionAutoRotate ) );
if ( KErrNone != err )
{
// Not a JPEG - use standard decoder
iImageDecoder = CImageDecoder::FileNewL( iFs, sourceFileName, CImageDecoder::EOptionAutoRotate );
}
}
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);
}
//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();
iBitmap->Create( decodeSize,EColor64K);
iImageDecoder->Convert( &iStatus, *iBitmap );
SetActive();
}
return QSizeF(decodeSize.iWidth,decodeSize.iHeight) ;
}
// ---------------------------------------------------------------------------
// 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)
{
//convert the bitmap to pixmap
iBitmap->LockHeap();
TUint32 *tempData = iBitmap->DataAddress();
uchar *data = (uchar *)(tempData);
int bytesPerLine = iBitmap->ScanLineLength(iBitmap->SizeInPixels().iWidth , iBitmap->DisplayMode());
QImage::Format format;
switch(iBitmap->DisplayMode()) {
case EGray2:
format = QImage::Format_MonoLSB;
break;
case EColor256:
case EGray256:
format = QImage::Format_Indexed8;
break;
case EColor4K:
format = QImage::Format_RGB444;
break;
case EColor64K:
format = QImage::Format_RGB16;
break;
case EColor16M:
format = QImage::Format_RGB666;
break;
case EColor16MU:
format = QImage::Format_RGB32;
break;
case EColor16MA:
format = QImage::Format_ARGB32;
break;
#if !defined(__SERIES60_31__) && !defined(__S60_32__)
case EColor16MAP:
format = QImage::Format_ARGB32_Premultiplied;
break;
#endif
default:
format = QImage::Format_Invalid;
break;
}
//QImage share the memory occupied by data
QImage image(data, iBitmap->SizeInPixels().iWidth, iBitmap->SizeInPixels().iHeight, bytesPerLine, format);
iDecodedPixmap = QPixmap::fromImage(image);
iBitmap->UnlockHeap();
//clean the bitmap as it is not required anymore
delete iBitmap;
iBitmap = NULL;
}
return iDecodedPixmap;
}
// ---------------------------------------------------------------------------
// ResetDecoder
// ---------------------------------------------------------------------------
//
void CGlxImageDecoder::ResetDecoder()
{
Cancel();
if(iBitmap) {
delete iBitmap;
iBitmap = NULL;
}
iDecodedPixmap = QPixmap();
}