smsprotocols/smsstack/ems/src/EMSPictureIE.cpp
changeset 0 3553901f7fa8
child 24 6638e7f4bd8f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/smsprotocols/smsstack/ems/src/EMSPictureIE.cpp	Tue Feb 02 01:41:59 2010 +0200
@@ -0,0 +1,262 @@
+/*
+* Copyright (c) 2009 Sony Ericsson Mobile Communications AB
+* 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:
+* Sony Ericsson Mobile Communications AB - initial contribution.
+* Nokia Corporation - additional changes.
+* 
+* Contributors:
+* 
+* Description:
+* Implements the Enhanced SMS Picture (Small/Large/Variable) Information Element.
+*
+*/
+
+
+/**
+ *  @file
+ *  
+ *  Implements  CEMSPictureIE class
+ */
+
+
+#include <emspictureie.h>
+
+#include <fbs.h>
+
+CEmsPictureIE* CEmsPictureIE::NewL()
+	{
+	CEmsPictureIE* self = new (ELeave) CEmsPictureIE();
+	return self;
+	}
+
+EXPORT_C CEmsPictureIE* CEmsPictureIE::NewL(const CFbsBitmap& aBitmap)
+/**
+ *  @capability None
+ */
+	{
+	CEmsPictureIE* self = new (ELeave) CEmsPictureIE();
+	CleanupStack::PushL(self);
+	self->ConstructL(aBitmap);
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+EXPORT_C CEmsInformationElement* CEmsPictureIE::DuplicateL() const
+/**
+ *  @capability None
+ */
+	{
+	CEmsPictureIE* copy = new (ELeave) CEmsPictureIE();
+	CleanupStack::PushL(copy);
+	copy->CopyL(*this);
+	CleanupStack::Pop(copy);
+	return copy;
+	}
+
+EXPORT_C TSize CEmsPictureIE::SizeInPixels() const
+/**
+ *  @capability None
+ */
+	{
+	return iSize;
+	}
+
+void CEmsPictureIE::ConstructL(const CFbsBitmap& aBitmap)
+	{
+	__ASSERT_ALWAYS(!iPictureBuf, User::Leave(KErrCorrupt));
+
+	iSize = aBitmap.SizeInPixels();
+	if ((iSize == KSmallPicSize) || (iSize == KLargePicSize))
+		{
+		iIdentifier  = (iSize == KSmallPicSize) ? CSmsInformationElement::ESmsEnhancedSmallPicture : CSmsInformationElement::ESmsEnhancedLargePicture;
+		iPictureBuf = CreatePictureBufferL(aBitmap);
+		iEncodedBodyLength=iSize.iHeight*iSize.iWidth/8;
+		}
+	else
+		{
+		// Make sure bitmap is a x of 8 bits wide
+		iIdentifier  = CSmsInformationElement::ESmsEnhancedVariablePicture;
+
+		TSize size = aBitmap.SizeInPixels();
+		iSize.iHeight = size.iHeight;
+		if (size.iWidth%8 != 0)
+			User::Leave(KErrCorrupt);
+		iPictureBuf = CreatePictureBufferL(aBitmap);
+
+		// The length is the picture size plus two bytes to specify
+		// the width and height
+		iEncodedBodyLength=iSize.iHeight*iSize.iWidth/8+2;
+		}
+	__ASSERT_ALWAYS(iPictureBuf->Length() <= EEnhancedMaxSize, User::Leave(KErrTooBig));
+	}
+
+HBufC8* CEmsPictureIE::CreatePictureBufferL(const CFbsBitmap& aBitmap)
+	{
+	__ASSERT_ALWAYS(aBitmap.SizeInPixels().iWidth%8==0, User::Leave(KErrCorrupt));
+
+	const TSize size = aBitmap.SizeInPixels();
+	const TInt numLineBytes = size.iWidth/8;
+	HBufC8* pictureBuf = HBufC8::NewLC(numLineBytes * size.iHeight);
+
+	HBufC8* scanLine = HBufC8::NewLC(numLineBytes);
+	TPtr8 line(scanLine->Des());
+
+	HBufC8* working = HBufC8::NewLC(numLineBytes);
+	TPtr8 convertedScanLine(working->Des());
+	convertedScanLine.SetLength(numLineBytes);
+
+	TUint8 byte;
+
+	for (TInt a=0; a<size.iHeight; a++)
+		{
+		aBitmap.GetScanLine(line, TPoint(0,a), size.iWidth, EGray2);
+
+		for (TInt word=0; word<numLineBytes; word++)
+			{
+			// Convert EMS Black=1 to Epoc Black=0
+			// and Convert little endean to big.
+			byte = 0;
+			for (TInt bit=0; bit<8; bit++)
+				byte |= (line[word] & (1<<bit)) ? 0 : (1<<(7-bit));
+
+			convertedScanLine[word] = byte;
+			}
+
+		pictureBuf->Des().Append(convertedScanLine);
+		}
+
+	CleanupStack::PopAndDestroy(2, scanLine);
+	CleanupStack::Pop(pictureBuf);
+	return pictureBuf;
+	}
+
+EXPORT_C void CEmsPictureIE::CopyL(const CEmsPictureIE& aSrc)
+/**
+ *  @capability None
+ */
+	{
+	__ASSERT_ALWAYS(aSrc.iPictureBuf, User::Leave(KErrCorrupt));
+	CEmsInformationElement::CopyL(aSrc);
+	iSize = aSrc.iSize;
+	delete iPictureBuf;
+	iPictureBuf=NULL;
+	iPictureBuf = aSrc.iPictureBuf->AllocL();
+	}
+
+/**
+ *  Encodes the information element into its raw format. (no IE id)
+ *  
+ *  @param aPtr the buffer to be used which is to contain the data
+ *  @param TBool boolean to indicate if it is for serialisation or encoding
+ */
+void CEmsPictureIE::EncodeBodyL(TPtr8 aPtr, TBool) const
+	{
+	__ASSERT_ALWAYS(iPictureBuf, User::Leave(KErrCorrupt));
+	__ASSERT_ALWAYS(iSize.iWidth<255 && iSize.iHeight<255, User::Leave(KErrCorrupt));
+	TBool variablePicture = ((iSize != KSmallPicSize) && (iSize != KLargePicSize));
+	__ASSERT_ALWAYS((variablePicture && iIdentifier == CSmsInformationElement::ESmsEnhancedVariablePicture) ||
+		(!variablePicture && iIdentifier != CSmsInformationElement::ESmsEnhancedVariablePicture), User::Leave(KErrCorrupt));
+
+	if (variablePicture)
+		{
+		aPtr.Append(static_cast<TUint8>(iSize.iWidth/8));
+		aPtr.Append(static_cast<TUint8>(iSize.iHeight));
+		}
+
+	aPtr.Append(*iPictureBuf);
+	}
+
+
+/**
+ *  Decodes the raw data out of an information element into this class.
+ *  
+ *  @param aPtr The raw predefined animation data
+ *  @param TBool boolean to indicate if it is from serialisation
+ *  @leave KErrGeneral If the size of the data does not match what is expected.
+ */
+void CEmsPictureIE::DecodeBodyL(const TPtrC8 aPtr, TBool)
+	{
+	switch (iIdentifier)
+		{
+		case CSmsInformationElement::ESmsEnhancedSmallPicture:
+			__ASSERT_ALWAYS(aPtr.Length()==ESmallBufSize, User::Leave(KErrGeneral));
+			iSize = KSmallPicSize;
+			break;
+		case CSmsInformationElement::ESmsEnhancedLargePicture:
+			__ASSERT_ALWAYS(aPtr.Length()==ELargeBufSize, User::Leave(KErrGeneral));
+			iSize = KLargePicSize;
+			break;
+		case CSmsInformationElement::ESmsEnhancedVariablePicture:
+			iSize.iWidth = static_cast<TUint8>(aPtr[0]) * 8;
+			iSize.iHeight = static_cast<TUint8>(aPtr[1]);
+			__ASSERT_ALWAYS(aPtr.Length()==(iSize.iWidth/8*iSize.iHeight)+2, User::Leave(KErrGeneral));
+			break;
+		default:
+			User::Leave(KErrArgument);
+		}
+
+	delete iPictureBuf;
+	iPictureBuf = NULL;
+	if (iIdentifier == CSmsInformationElement::ESmsEnhancedVariablePicture)
+		iPictureBuf = aPtr.Mid(2).AllocL();
+	else
+		iPictureBuf = aPtr.AllocL();
+	}
+
+CEmsPictureIE::CEmsPictureIE() : CEmsInformationElement(CSmsInformationElement::ESmsEnhancedSmallPicture){};
+
+EXPORT_C CEmsPictureIE::~CEmsPictureIE()
+/**
+ *  @capability None
+ */
+	{
+	delete iPictureBuf;
+	}
+
+
+
+EXPORT_C CFbsBitmap* CEmsPictureIE::GetBitmapL() const
+/**
+ *  @capability None
+ */
+	{
+
+	CFbsBitmap* bitmap = new (ELeave) CFbsBitmap();
+	CleanupStack::PushL(bitmap);
+
+	TInt numLineBytes = iSize.iWidth/8;
+	User::LeaveIfError(bitmap->Create(iSize,EGray2));
+	HBufC8* working = HBufC8::NewLC(numLineBytes);
+	TPtr8 convertedScanLine(working->Des());
+	convertedScanLine.SetLength(numLineBytes);
+
+	TUint8 byte = 0;
+	TUint8* adr=NULL;
+
+	for (TInt line =0; line < iSize.iHeight; line++)
+		{
+		adr = &((iPictureBuf->Des())[(numLineBytes) * line]);
+		TPtr8  scanLine(adr, numLineBytes, numLineBytes);
+
+		for (TInt word=0; word<numLineBytes; word++)
+			{
+			// Convert EMS Black=1 to Epoc Black=0
+			// and Convert little endean to big.
+			byte=0;
+			for (TUint bit=0; bit<8; bit++)
+				byte |= (scanLine[word] & (1<<bit)) ? 0 : (1<<(7-bit));
+			convertedScanLine[word] = byte;
+			}
+
+		bitmap->SetScanLine(convertedScanLine, line);
+		}
+	CleanupStack::PopAndDestroy(working);
+	CleanupStack::Pop(bitmap);
+	return bitmap;
+	}