--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmplugins/imagingplugins/codecs/MBMCodec/MBMCodec.cpp	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,1016 @@
+// Copyright (c) 1999-2009 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:
+//
+
+#include <fbs.h>
+#include <s32mem.h>
+#include "ImageClientMain.h"
+#include "MBMCodec.h"
+
+_LIT(KMBMPanicCategory, "MBMConvertPlugin");
+
+// Global panic function
+GLDEF_C void Panic(TIclPanic aError)
+	{
+	User::Panic(KMBMPanicCategory, aError);
+	}
+
+
+// CMbmReadCodec
+CMbmReadCodec::CMbmReadCodec(TUint32 aMbmRootStreamOffset)
+:iMbmRootStreamOffset(aMbmRootStreamOffset)
+	{
+	}
+
+CMbmReadCodec::~CMbmReadCodec()
+	{
+	delete iCodecProc;
+	}
+
+
+CMbmReadCodec* CMbmReadCodec::NewL(TUint32 aMbmRootStreamOffset)
+{
+	CMbmReadCodec* self = new(ELeave) CMbmReadCodec(aMbmRootStreamOffset);
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(self); 
+	return self;
+}
+
+TDisplayMode CMbmReadCodec::DisplayModeL(TInt aBitsPerPixel, TUint32 aFlags)
+	{	
+	if (aFlags & TFrameInfo::EColor)
+		{
+		switch (aBitsPerPixel)
+			{
+			case 4:
+				return EColor16;
+			case 8:
+				return EColor256;
+			case 12:
+				return EColor4K;
+			case 16:
+				return EColor64K;
+			case 24:
+				return EColor16M;
+			case 32:	
+				if(aFlags & TFrameInfo::EAlphaChannel)
+					{
+					return EColor16MA;	
+					}
+				else
+					{
+					return EColor16MU;
+					}
+			default:
+				User::Leave(KErrNotSupported);
+			}
+		}
+	else
+		{
+		switch (aBitsPerPixel)
+			{
+			case 1:
+				return EGray2;
+			case 2:
+				return EGray4;
+			case 4:
+				return EGray16;
+			case 8:
+				return EGray256;
+			default:
+				User::Leave(KErrNotSupported);
+			}
+		}
+
+	return ENone;
+	}
+
+void CMbmReadCodec::InitFrameL(TFrameInfo& aFrameInfo, CFrameImageData& aFrameImageData, TBool aDisableErrorDiffusion, CFbsBitmap& aFrame, CFbsBitmap* /*aFrameMask*/)
+	{
+	iFrameInfo = &aFrameInfo;
+	iFrameData = STATIC_CAST(TMbmDecodeData*, aFrameImageData.GetFrameData(0));
+ 	iCompressed = iFrameData->iCompressed;
+
+	iByteLength = iFrameData->iImageDataSizeInBytes;
+
+	TPoint& pos = Pos();
+	pos.SetXY(0,0);
+
+	TSize originalSize(iFrameInfo->iFrameCoordsInPixels.Size());
+
+	TDisplayMode displayMode = DisplayModeL(iFrameInfo->iBitsPerPixel,iFrameInfo->iFlags);
+	const TSize destinationSize(aFrame.SizeInPixels());
+	TInt reductionFactor = ReductionFactor(originalSize, destinationSize);
+	
+	CImageProcessor* imageProc = ImageProcessorUtility::NewImageProcessorL(aFrame, reductionFactor, displayMode, aDisableErrorDiffusion);
+	SetImageProcessor(imageProc);
+
+	imageProc->PrepareL(aFrame,originalSize);
+	TInt scanLinePixels = ScanLinePixels(originalSize.iWidth);
+	imageProc->SetPixelPadding(scanLinePixels - originalSize.iWidth);
+	SetCodecProcessorL();
+
+	ClearBitmapL(aFrame, KRgbWhite);
+		// clear in case of streamed partial decodes
+	}
+
+void CMbmReadCodec::InitFrameHeader(TFrameInfo& aFrameSettings, CFrameImageData& aFrameImageData)
+	{
+	ASSERT(aFrameSettings.CurrentFrameState() == TFrameInfo::EFrameInfoUninitialised);
+	iFrameInfo = &aFrameSettings;
+	iImageData = &aFrameImageData;
+	iFrameInfo->SetCurrentFrameState(TFrameInfo::EFrameInfoProcessingFrameHeader);
+	}
+
+TFrameState CMbmReadCodec::ProcessFrameHeaderL(TBufPtr8& aData)
+	{
+	iStartDataPtr = CONST_CAST(TUint8*,aData.Ptr());
+	iDataPtr = iStartDataPtr;
+	iDataPtrLimit = iStartDataPtr + aData.Length();
+
+	if (iFrameInfo->CurrentFrameState() == TFrameInfo::EFrameInfoProcessingFrame)
+		{
+		if(iFrameDataRemaining <= aData.Length())
+			iNumberOfFrames++;
+		else
+			{
+			iMbmRootStreamOffset -= aData.Length();
+			iFrameDataRemaining -= aData.Length();
+			aData.Shift(aData.Length());
+			return EFrameIncomplete;
+			}
+	
+		if ((iMbmRootStreamOffset-iFrameDataRemaining) == 0)
+			{
+			iFrameInfo->SetCurrentFrameState(TFrameInfo::EFrameInfoProcessingComplete);
+			return EFrameComplete;
+			}
+		else if ((iMbmRootStreamOffset - iFrameDataRemaining) < KMbmInfoHeaderSize)
+			{
+			//Bitmap StreamLength is too short to continue processing. 
+			User::Leave(KErrCorrupt);
+			}
+		else
+			{
+			aData.Shift(iFrameDataRemaining);
+			iMbmRootStreamOffset -= iFrameDataRemaining;
+
+			iFrameInfo->SetCurrentFrameState(TFrameInfo::EFrameInfoProcessingComplete);
+			return EFrameIncomplete;
+			}
+		}
+
+	if (iFrameInfo->CurrentFrameState() == TFrameInfo::EFrameInfoProcessingFrameHeader)
+		{
+		if (aData.Length()<KMbmInfoHeaderSize)
+			User::Leave(KErrUnderflow);
+		
+		TMbmDecodeData* mbmDecodeData = new(ELeave)TMbmDecodeData;
+		CleanupStack::PushL(mbmDecodeData);
+
+		User::LeaveIfError(iImageData->AppendFrameData(mbmDecodeData));
+		CleanupStack::Pop(); // mbmImageData
+
+		SEpocBitmapHeader header;
+		RDesReadStream stream;
+		stream.Open(aData);
+		CleanupClosePushL(stream);
+		header.iBitmapSize=stream.ReadInt32L();
+		header.iStructSize=stream.ReadInt32L();
+		if (header.iStructSize!=sizeof(SEpocBitmapHeader)) User::Leave(KErrCorrupt);
+		header.iSizeInPixels.iWidth=stream.ReadInt32L();
+		header.iSizeInPixels.iHeight=stream.ReadInt32L();
+		header.iSizeInTwips.iWidth=stream.ReadInt32L();
+		header.iSizeInTwips.iHeight=stream.ReadInt32L();
+		header.iBitsPerPixel=stream.ReadInt32L();
+		header.iColor=stream.ReadUint32L();
+		header.iPaletteEntries=stream.ReadInt32L();
+		header.iCompression=(TBitmapfileCompression)stream.ReadUint32L();
+		CleanupStack::PopAndDestroy(); //stream
+
+		if (header.iBitmapSize<KMbmInfoHeaderSize)
+			User::Leave(KErrCorrupt);
+
+		iFrameDataRemaining = header.iBitmapSize - KMbmInfoHeaderSize;
+		if (iMbmRootStreamOffset<KMbmInfoHeaderSize)
+			User::Leave(KErrCorrupt);
+
+		iMbmRootStreamOffset -= KMbmInfoHeaderSize;
+		TInt frameDataOffset = iFrameInfo->FrameDataOffset();
+		iFrameInfo->SetFrameDataOffset(frameDataOffset + KMbmInfoHeaderSize);
+		iFrameInfo->iFrameCoordsInPixels.SetRect(TPoint(0,0),header.iSizeInPixels);
+		iFrameInfo->iOverallSizeInPixels = header.iSizeInPixels;
+		iFrameInfo->iFrameSizeInTwips = header.iSizeInTwips;
+		iFrameInfo->iBitsPerPixel = header.iBitsPerPixel;
+		iFrameInfo->iDelay = 0;
+		iFrameInfo->iFlags = TFrameInfo::ECanDither;
+
+		switch(header.iColor)
+			{
+			case SEpocBitmapHeader::ENoColor:
+				break;
+			case SEpocBitmapHeader::EColor:
+				iFrameInfo->iFlags |= TFrameInfo::EColor;
+				break;
+			case SEpocBitmapHeader::EColorAlpha:
+				iFrameInfo->iFlags |= TFrameInfo::EColor;
+				iFrameInfo->iFlags |= TFrameInfo::ETransparencyPossible;
+				iFrameInfo->iFlags |= TFrameInfo::EAlphaChannel;
+				break;
+			default:
+				User::Leave(KErrNotSupported);
+			}
+
+		mbmDecodeData->iCompressed = header.iCompression;
+		mbmDecodeData->iImageDataSizeInBytes = header.iBitmapSize - header.iStructSize;
+
+		if (iFrameInfo->iFrameCoordsInPixels.iBr.iX < 0 || iFrameInfo->iFrameCoordsInPixels.iBr.iY < 0 ||
+			iFrameInfo->iFrameSizeInTwips.iWidth < 0 || iFrameInfo->iFrameSizeInTwips.iHeight < 0 ||
+			!(iFrameInfo->iBitsPerPixel == 1 || iFrameInfo->iBitsPerPixel == 2 || 
+			iFrameInfo->iBitsPerPixel == 4 || iFrameInfo->iBitsPerPixel == 8 || 
+			iFrameInfo->iBitsPerPixel == 12 || iFrameInfo->iBitsPerPixel == 16 || 
+			iFrameInfo->iBitsPerPixel == 24 || iFrameInfo->iBitsPerPixel == 32))
+			User::Leave(KErrCorrupt);
+
+		switch (iFrameInfo->iBitsPerPixel)
+			{
+		case 1:
+			iFrameInfo->iFrameDisplayMode = EGray2;
+			break;
+
+		case 2:
+			iFrameInfo->iFrameDisplayMode = EGray4;
+			break;
+
+		case 4:
+			iFrameInfo->iFrameDisplayMode = (iFrameInfo->iFlags & TFrameInfo::EColor) ? EColor16 : EGray16;
+			break;
+
+		case 8:
+			iFrameInfo->iFrameDisplayMode = (iFrameInfo->iFlags & TFrameInfo::EColor) ? EColor256 : EGray256;
+			break;
+
+		case 12:
+			iFrameInfo->iFrameDisplayMode = EColor4K;
+			break;
+
+		case 16:
+			iFrameInfo->iFrameDisplayMode = EColor64K;
+			break;
+
+		case 24:
+			iFrameInfo->iFrameDisplayMode = EColor16M;
+			break;
+
+		case 32:
+			if(iFrameInfo->iFlags & TFrameInfo::ETransparencyPossible && iFrameInfo->iFlags & TFrameInfo::EAlphaChannel)
+				{
+				iFrameInfo->iFrameDisplayMode = EColor16MA;
+				}
+			else
+				{
+				iFrameInfo->iFrameDisplayMode = EColor16MU;
+				}
+			break;
+			}
+
+		aData.Shift(KMbmInfoHeaderSize);
+		iFrameInfo->SetCurrentFrameState(TFrameInfo::EFrameInfoProcessingFrame);
+		}
+
+	return EFrameIncomplete;
+	}
+
+TFrameState CMbmReadCodec::ProcessFrameL(TBufPtr8& aSrc)
+	{
+	TUint8* srcPtr = CONST_CAST(TUint8*,aSrc.Ptr());
+	iDataPtr = srcPtr;
+	iDataPtrLimit = iDataPtr + Min(aSrc.Length(),iByteLength);
+
+	iCodecProc->DoProcessL(iDataPtr,iDataPtrLimit);
+	TInt bytesUsed = iDataPtr - srcPtr;
+	aSrc.Shift(bytesUsed);
+	iByteLength -= bytesUsed;
+
+	if (iByteLength == 0)
+		{
+		ImageProcessor()->FlushPixels();
+		delete iCodecProc;
+		iCodecProc = NULL;
+		return EFrameComplete;
+		}
+	return EFrameIncomplete;
+	}
+
+TInt CMbmReadCodec::ScanLinePixels(TInt aWidth)
+	{
+	switch (iFrameInfo->iBitsPerPixel)
+		{
+	case 1:
+		return CFbsBitmap::ScanLineLength(aWidth,EGray2) << 3;
+	case 2:
+		return CFbsBitmap::ScanLineLength(aWidth,EGray4) << 2;
+	case 4:
+		return CFbsBitmap::ScanLineLength(aWidth,EGray16) << 1;
+	case 8:
+		return CFbsBitmap::ScanLineLength(aWidth,EGray256);
+	case 12:
+	case 16:
+		return CFbsBitmap::ScanLineLength(aWidth,EColor64K) >> 1;
+	case 24:
+		return CFbsBitmap::ScanLineLength(aWidth,EColor16M) / 3;
+	case 32:
+		return CFbsBitmap::ScanLineLength(aWidth,EColor16MU) / 4; // for all 32bit modes
+	default:
+		return 0;
+		}
+	}
+
+void CMbmReadCodec::SetCodecProcessorL()
+	{
+	delete iCodecProc;
+	iCodecProc = NULL;
+	const TBool color = (iFrameInfo->iFlags & TFrameInfo::EColor);
+
+	switch (iFrameInfo->iBitsPerPixel)
+		{
+	case 1:
+		if (iCompressed)
+			iCodecProc = new(ELeave) T1BppCompressedMbmReadCodec;
+		else
+			iCodecProc = new(ELeave) T1BppMbmReadCodec;
+		break;
+	case 2:
+		if (iCompressed)
+			iCodecProc = new(ELeave) T2BppCompressedMbmReadCodec;
+		else
+			iCodecProc = new(ELeave) T2BppMbmReadCodec;
+		break;
+	case 4:
+		if (color)
+			{
+			if (iCompressed)
+				iCodecProc = new(ELeave) T4BppColorCompressedMbmReadCodec;
+			else
+				iCodecProc = new(ELeave) T4BppColorMbmReadCodec;
+			}
+		else
+			{
+			if (iCompressed)
+				iCodecProc = new(ELeave) T4BppMonoCompressedMbmReadCodec;
+			else
+				iCodecProc = new(ELeave) T4BppMonoMbmReadCodec;
+			}
+		break;
+	case 8:
+		if (color)
+			{
+			if (iCompressed)
+				iCodecProc = new(ELeave) T8BppColorCompressedMbmReadCodec;
+			else
+				iCodecProc = new(ELeave) T8BppColorMbmReadCodec;
+			}
+		else
+			{
+			if (iCompressed)
+				iCodecProc = new(ELeave) T8BppMonoCompressedMbmReadCodec;
+			else
+				iCodecProc = new(ELeave) T8BppMonoMbmReadCodec;
+			}
+		break;
+	case 12:
+		if (iCompressed)
+			iCodecProc = new(ELeave) T12BppCompressedMbmReadCodec;
+		else
+			iCodecProc = new(ELeave) T12BppMbmReadCodec;
+		break;
+	case 16:
+		if (iCompressed)
+			iCodecProc = new(ELeave) T16BppCompressedMbmReadCodec;
+		else
+			iCodecProc = new(ELeave) T16BppMbmReadCodec;
+		break;
+	case 24:
+		if (iCompressed)
+			iCodecProc = new(ELeave) T24BppCompressedMbmReadCodec;
+		else
+			iCodecProc = new(ELeave) T24BppMbmReadCodec;
+		break;
+	case 32:
+		if (iCompressed)
+			User::Leave(KErrNotSupported);
+		else
+			iCodecProc = new(ELeave) T32BppMbmReadCodec;
+		break;
+	default:
+		User::Leave(KErrCorrupt);
+		}
+
+	iCodecProc->iImageProc = ImageProcessor();
+	}
+
+
+// TMbmReadCodec
+void TMbmReadCodec::AddPixelRun(TRgb aColor,TInt aNumberOfPixels)
+	{
+	iImageProc->SetPixelRun(aColor,aNumberOfPixels);
+	}
+
+
+// T1BppMbmReadCodec
+void T1BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	while (aDataPtr < aDataPtrLimit)
+		AddPixelValue(*aDataPtr++);
+	}
+
+void T1BppMbmReadCodec::AddPixelValue(TUint8 aValue)
+	{
+	iImageProc->SetPixel((aValue & 0x01) ? KRgbWhite : KRgbBlack);
+	iImageProc->SetPixel((aValue & 0x02) ? KRgbWhite : KRgbBlack);
+	iImageProc->SetPixel((aValue & 0x04) ? KRgbWhite : KRgbBlack);
+	iImageProc->SetPixel((aValue & 0x08) ? KRgbWhite : KRgbBlack);
+	iImageProc->SetPixel((aValue & 0x10) ? KRgbWhite : KRgbBlack);
+	iImageProc->SetPixel((aValue & 0x20) ? KRgbWhite : KRgbBlack);
+	iImageProc->SetPixel((aValue & 0x40) ? KRgbWhite : KRgbBlack);
+	iImageProc->SetPixel((aValue & 0x80) ? KRgbWhite : KRgbBlack);
+	}
+
+
+// T1BppCompressedMbmReadCodec
+void T1BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	while (aDataPtr < aDataPtrLimit)
+		{
+		TInt8 count = *aDataPtr++;
+
+		if (count >= 0)
+			{
+			if (aDataPtr >= aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			AddPixelRun(*aDataPtr++,count + 1);
+			}
+		else
+			{
+			TUint8* tempDataPtrLimit = aDataPtr - count;
+			if (tempDataPtrLimit > aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			while (aDataPtr < tempDataPtrLimit)
+				AddPixelValue(*aDataPtr++);
+			}
+		}
+	}
+
+void T1BppCompressedMbmReadCodec::AddPixelRun(TUint8 aValue,TInt aNumberOfValues)
+	{
+	TRgb color0 = (aValue & 0x01) ? KRgbWhite : KRgbBlack;
+	TRgb color1 = (aValue & 0x02) ? KRgbWhite : KRgbBlack;
+	TRgb color2 = (aValue & 0x04) ? KRgbWhite : KRgbBlack;
+	TRgb color3 = (aValue & 0x08) ? KRgbWhite : KRgbBlack;
+	TRgb color4 = (aValue & 0x10) ? KRgbWhite : KRgbBlack;
+	TRgb color5 = (aValue & 0x20) ? KRgbWhite : KRgbBlack;
+	TRgb color6 = (aValue & 0x40) ? KRgbWhite : KRgbBlack;
+	TRgb color7 = (aValue & 0x80) ? KRgbWhite : KRgbBlack;
+
+	for (; aNumberOfValues > 0; aNumberOfValues--)
+		{
+		iImageProc->SetPixel(color0);
+		iImageProc->SetPixel(color1);
+		iImageProc->SetPixel(color2);
+		iImageProc->SetPixel(color3);
+		iImageProc->SetPixel(color4);
+		iImageProc->SetPixel(color5);
+		iImageProc->SetPixel(color6);
+		iImageProc->SetPixel(color7);
+		}
+	}
+
+
+// T2BppMbmReadCodec
+void T2BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	while (aDataPtr < aDataPtrLimit)
+		AddPixelValue(*aDataPtr++);
+	}
+
+void T2BppMbmReadCodec::AddPixelValue(TUint8 aValue)
+	{
+	iImageProc->SetPixel(TRgb::Gray4(aValue & 0x3));
+	iImageProc->SetPixel(TRgb::Gray4((aValue >> 2) & 0x3));
+	iImageProc->SetPixel(TRgb::Gray4((aValue >> 4) & 0x3));
+	iImageProc->SetPixel(TRgb::Gray4((aValue >> 6) & 0x3));
+	}
+
+
+// T2BppCompressedMbmReadCodec
+void T2BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	while (aDataPtr < aDataPtrLimit)
+		{
+		TInt8 count = *aDataPtr++;
+
+		if (count >= 0)
+			{
+			if (aDataPtr >= aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			AddPixelRun(*aDataPtr++,count + 1);
+			}
+		else
+			{
+			TUint8* tempDataPtrLimit = aDataPtr - count;
+			if (tempDataPtrLimit > aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			while (aDataPtr < tempDataPtrLimit)
+				AddPixelValue(*aDataPtr++);
+			}
+		}
+	}
+
+void T2BppCompressedMbmReadCodec::AddPixelRun(TUint8 aValue,TInt aNumberOfQuads)
+	{
+	TRgb color0 = TRgb::Gray4(aValue & 0x3);
+	TRgb color1 = TRgb::Gray4((aValue >> 2) & 0x3);
+	TRgb color2 = TRgb::Gray4((aValue >> 4) & 0x3);
+	TRgb color3 = TRgb::Gray4((aValue >> 6) & 0x3);
+
+	for (; aNumberOfQuads > 0; aNumberOfQuads--)
+		{
+		iImageProc->SetPixel(color0);
+		iImageProc->SetPixel(color1);
+		iImageProc->SetPixel(color2);
+		iImageProc->SetPixel(color3);
+		}
+	}
+
+
+// T4BppMbmReadCodec
+void T4BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	while (aDataPtr < aDataPtrLimit)
+		{
+		TInt value = *aDataPtr++;
+		iImageProc->SetPixel(ColorFromIndex(value & 0xf));
+		iImageProc->SetPixel(ColorFromIndex(value >> 4));
+		}
+	}
+
+
+// T4BppCompressedMbmReadCodec
+void T4BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	while (aDataPtr < aDataPtrLimit)
+		{
+		TInt8 count = *aDataPtr++;
+
+		if (count >= 0)
+			{
+			if (aDataPtr >= aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			TInt value = *aDataPtr++;
+			AddPixelRun(ColorFromIndex(value & 0xf),ColorFromIndex(value >> 4),count + 1);
+			}
+		else
+			{
+			TUint8* tempDataPtrLimit = aDataPtr - count;
+			if (tempDataPtrLimit > aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			while (aDataPtr < tempDataPtrLimit)
+				{
+				TInt value = *aDataPtr++;
+				iImageProc->SetPixel(ColorFromIndex(value & 0xf));
+				iImageProc->SetPixel(ColorFromIndex(value >> 4));
+				}
+			}
+		}
+	}
+
+void T4BppCompressedMbmReadCodec::AddPixelRun(TRgb aColor1,TRgb aColor2,TInt aNumberOfPairs)
+	{
+	for (; aNumberOfPairs > 0; aNumberOfPairs--)
+		{
+		iImageProc->SetPixel(aColor1);
+		iImageProc->SetPixel(aColor2);
+		}
+	}
+
+
+// T8BppMbmReadCodec
+void T8BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	while (aDataPtr < aDataPtrLimit)
+		iImageProc->SetPixel(ColorFromIndex(*aDataPtr++));
+	}
+
+
+// T8BppCompressedMbmReadCodec
+void T8BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	while (aDataPtr < aDataPtrLimit)
+		{
+		TInt8 count = *aDataPtr++;
+
+		if (count >= 0)
+			{
+			if (aDataPtr >= aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			AddPixelRun(ColorFromIndex(*aDataPtr++),count + 1);
+			}
+		else
+			{
+			TUint8* tempDataPtrLimit = aDataPtr - count;
+			if (tempDataPtrLimit > aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			while (aDataPtr < tempDataPtrLimit)
+				iImageProc->SetPixel(ColorFromIndex(*aDataPtr++));
+			}
+		}
+	}
+
+
+// T12BppMbmReadCodec
+void T12BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	ASSERT(!(TInt(aDataPtr) & 1));
+
+	TUint16* tempDataPtr = (TUint16*)aDataPtr;
+	TUint16* tempDataPtrLimit = tempDataPtr + ((aDataPtrLimit - aDataPtr) >> 1);
+
+	while (tempDataPtr < tempDataPtrLimit)
+		iImageProc->SetPixel(TRgb::Color4K((*tempDataPtr++) & 0x0fff));
+
+	aDataPtr = (TUint8*)tempDataPtr;
+	}
+
+
+// T12BppCompressedMbmReadCodec
+void T12BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	if((TInt(aDataPtr) & 1))
+		{
+		// Not word aligned
+		while (aDataPtr < aDataPtrLimit)
+			{
+			TInt value = (aDataPtr[0] | aDataPtr[1] << 8);
+			AddPixelRun(TRgb::Color4K(value & 0x0fff),(value >> 12) + 1);
+			aDataPtr += 2;
+			}
+		}	
+	else
+		{
+		//Word Aligned
+		TUint16* tempDataPtr = (TUint16*)aDataPtr;
+		TUint16* tempDataPtrLimit = tempDataPtr + ((aDataPtrLimit - aDataPtr) >> 1);
+
+		while (tempDataPtr < tempDataPtrLimit)
+			{
+			TInt value = *tempDataPtr++;
+			AddPixelRun(TRgb::Color4K(value & 0x0fff),(value >> 12) + 1);
+			}
+
+		aDataPtr = (TUint8*)tempDataPtr;
+		}
+	}
+
+
+// T16BppMbmReadCodec
+void T16BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	ASSERT(!(TInt(aDataPtr) & 1));
+
+	TUint16* tempDataPtr = (TUint16*)aDataPtr;
+	TUint16* tempDataPtrLimit = tempDataPtr + ((aDataPtrLimit - aDataPtr) >> 1);
+
+	while (tempDataPtr < tempDataPtrLimit)
+		iImageProc->SetPixel(TRgb::Color64K(*tempDataPtr++));
+
+	aDataPtr = (TUint8*)tempDataPtr;
+	}
+
+
+// T16BppCompressedMbmReadCodec
+void T16BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	while (aDataPtr < aDataPtrLimit)
+		{
+		TInt8 count = *aDataPtr++;
+
+		if (count >= 0)
+			{
+			if (aDataPtr + 2 > aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			AddPixelRun(TRgb::Color64K(aDataPtr[0] | (aDataPtr[1] << 8)),count + 1);
+			aDataPtr += 2;
+			}
+		else
+			{
+			TUint8* tempDataPtrLimit = aDataPtr + (count * -2);
+			if (tempDataPtrLimit > aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			while (aDataPtr < tempDataPtrLimit)
+				{
+				iImageProc->SetPixel(TRgb::Color64K(aDataPtr[0] | (aDataPtr[1] << 8)));
+				aDataPtr += 2;
+				}
+			}
+		}
+	}
+
+
+// T24BppMbmReadCodec
+void T24BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	TUint8* tempDataPtrLimit = aDataPtrLimit - 2; // Safe limit for jumps of three bytes
+	while (aDataPtr < tempDataPtrLimit)
+		{
+		iImageProc->SetPixel(TRgb(aDataPtr[2],aDataPtr[1],aDataPtr[0]));
+		aDataPtr += 3;
+		}
+	}
+
+
+// T24BppCompressedMbmReadCodec
+void T24BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	while (aDataPtr < aDataPtrLimit)
+		{
+		TInt8 count = *aDataPtr++;
+
+		if (count >= 0)
+			{
+			if (aDataPtr + 3 > aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			AddPixelRun(TRgb(aDataPtr[2],aDataPtr[1],aDataPtr[0]),count + 1);
+			aDataPtr += 3;
+			}
+		else
+			{
+			TUint8* tempDataPtrLimit = aDataPtr + (count * -3);
+			if (tempDataPtrLimit > aDataPtrLimit)
+				{
+				aDataPtr--;
+				break;
+				}
+			while (aDataPtr < tempDataPtrLimit)
+				{
+				iImageProc->SetPixel(TRgb(aDataPtr[2],aDataPtr[1],aDataPtr[0]));
+				aDataPtr += 3;
+				}
+			}
+		}
+	}
+
+// T32BppMbmReadCodec
+void T32BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit)
+	{
+	TUint8* tempDataPtrLimit = aDataPtrLimit - 3; // Safe limit for jumps of four bytes
+	while (aDataPtr < tempDataPtrLimit)
+		{
+		TRgb rgb(aDataPtr[2],aDataPtr[1],aDataPtr[0],aDataPtr[3]);
+		iImageProc->SetPixel(rgb);
+		aDataPtr += 4;
+		}
+	}
+
+// CMbmWriteCodec
+CMbmWriteCodec::CMbmWriteCodec(TDisplayMode aDisplayMode):
+	iDisplayMode(aDisplayMode)
+	{}
+
+CMbmWriteCodec::~CMbmWriteCodec()
+	{
+	delete iCodecProc;
+	}
+
+CMbmWriteCodec* CMbmWriteCodec::NewL(TDisplayMode aDisplayMode)
+{
+	CMbmWriteCodec* self = new(ELeave) CMbmWriteCodec(aDisplayMode);
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(self); 
+	return self;
+}
+
+TFrameState CMbmWriteCodec::ProcessFrameL(TBufPtr8& aDst)
+	{
+	TUint8* destStartPtr = CONST_CAST(TUint8*,aDst.Ptr());
+	iDataPtr = destStartPtr;
+	iDataPtrLimit = iDataPtr + aDst.MaxLength();
+
+	if (iStreamTablePending)
+		{
+		TUint32 data = 1;
+		Mem::Copy(iDataPtr,&data,sizeof(TUint32));
+		data = KMbmFirstBitmapOffset;
+		iDataPtr += sizeof(TUint32);
+		Mem::Copy(iDataPtr,&data,sizeof(TUint32));
+		iDataPtr += sizeof(TUint32);
+		aDst.SetLength(iDataPtr - destStartPtr);
+
+		return EFrameComplete;
+		}
+
+	DoProcessL(*Source());
+
+	aDst.SetLength(iDataPtr - destStartPtr);
+
+	if (iPos.iY >= iSourceRect.iBr.iY)
+		{
+		if (iDataPtrLimit - iDataPtr >= 8)
+			{
+			TUint32 data = 1;
+			Mem::Copy(iDataPtr,&data,sizeof(TUint32));
+			iDataPtr += sizeof(TUint32);
+			data = KMbmFirstBitmapOffset;
+			Mem::Copy(iDataPtr,&data,sizeof(TUint32));
+			iDataPtr += sizeof(TUint32);
+			aDst.SetLength(iDataPtr - destStartPtr);
+			return EFrameComplete;
+			}
+		else
+			iStreamTablePending = ETrue;
+		}
+
+	return EFrameIncomplete;
+	}
+
+void CMbmWriteCodec::InitFrameL(TBufPtr8& aDst, const CFbsBitmap& aFrame)
+	{
+	SetSource(&aFrame);
+
+	TUint8* destStartPtr = CONST_CAST(TUint8*,aDst.Ptr());
+	iDataPtr = destStartPtr;
+	iDataPtrLimit = iDataPtr + aDst.MaxLength();
+
+	iStreamTablePending = EFalse;
+
+	iSourceRect = TRect(aFrame.SizeInPixels());
+	iPos.SetXY(0,0);
+
+	TInt byteWidth = CFbsBitmap::ScanLineLength(iSourceRect.Size().iWidth,iDisplayMode);
+	SEpocBitmapHeader bmpHeader;
+
+	bmpHeader.iStructSize = sizeof(SEpocBitmapHeader);
+	bmpHeader.iSizeInPixels = iSourceRect.Size();
+	bmpHeader.iSizeInTwips = aFrame.SizeInTwips();
+
+	delete iCodecProc;
+	iCodecProc = NULL;
+
+	switch (iDisplayMode)
+		{
+	case EGray2:
+		bmpHeader.iBitsPerPixel = 1;
+		iCodecProc = new(ELeave) T1BppWriteCodecProcessor;
+		break;
+	case EGray4:
+		bmpHeader.iBitsPerPixel = 2;
+		iCodecProc = new(ELeave) T2BppWriteCodecProcessor;
+		break;
+	case EGray16:
+	case EColor16:
+		bmpHeader.iBitsPerPixel = 4;
+		iCodecProc = new(ELeave) T4BppWriteCodecProcessor;
+		break;
+	case EGray256:
+	case EColor256:
+		bmpHeader.iBitsPerPixel = 8;
+		iCodecProc = new(ELeave) T8BppWriteCodecProcessor;
+		break;
+	case EColor4K:
+		bmpHeader.iBitsPerPixel = 12;
+		iCodecProc = new(ELeave) T16BppWriteCodecProcessor;
+		break;
+	case EColor64K:
+		bmpHeader.iBitsPerPixel = 16;
+		iCodecProc = new(ELeave) T16BppWriteCodecProcessor;
+		break;
+	case EColor16M:
+		bmpHeader.iBitsPerPixel = 24;
+		iCodecProc = new(ELeave) T24BppWriteCodecProcessor;
+		break;
+	case EColor16MU:
+	case EColor16MA:
+		bmpHeader.iBitsPerPixel = 32;
+		iCodecProc = new(ELeave) T32BppWriteCodecProcessor;
+		break;
+	default:
+		Panic(EBadDisplayMode);
+		break;
+		}
+
+	switch (iDisplayMode)
+		{
+	case EGray2:
+	case EGray4:
+	case EGray16:
+	case EGray256:
+		bmpHeader.iColor = 0;
+		break;
+	case EColor16:
+	case EColor256:
+	case EColor4K:
+	case EColor64K:
+	case EColor16M:
+	case EColor16MU:
+		bmpHeader.iColor = 1;
+		break;
+	case EColor16MA:
+		bmpHeader.iColor = 2;
+		break;
+	default:
+		Panic(EBadDisplayMode);
+		break;
+		}
+	
+	bmpHeader.iPaletteEntries = 0;
+	bmpHeader.iCompression = ENoBitmapCompression;
+	bmpHeader.iBitmapSize = bmpHeader.iStructSize + (byteWidth * iSourceRect.Size().iHeight);
+
+	Mem::Copy(iDataPtr,&bmpHeader,sizeof(SEpocBitmapHeader));
+	iDataPtr += sizeof(SEpocBitmapHeader);
+	ASSERT(iDataPtr < iDataPtrLimit);
+
+	iPaddingBytes = byteWidth - iCodecProc->PixelsToBytes(iSourceRect.Size().iWidth);
+
+	aDst.SetLength(iDataPtr - destStartPtr);
+	}
+
+void CMbmWriteCodec::DoProcessL(const CFbsBitmap& aFrame)
+	{
+	TUint8* safeDataPtrLimit = iDataPtrLimit - 2;
+	while (iDataPtr < safeDataPtrLimit)
+		{
+		while (iBytesToWrite > 0)
+			{
+			*iDataPtr++ = 0;
+			iBytesToWrite--;
+			if (iDataPtr == iDataPtrLimit)
+				break;
+			}
+
+		if (iPos.iY >= iSourceRect.iBr.iY)
+			break;
+
+		TInt scanLength = Min(iSourceRect.iBr.iX - iPos.iX,iCodecProc->BytesToPixels(iDataPtrLimit - iDataPtr));
+		TInt dstLength = iCodecProc->PixelsToBytes(scanLength);
+		TPtr8 dstBuf(iDataPtr,dstLength,dstLength);
+
+		aFrame.GetScanLine(dstBuf,iPos,scanLength,iDisplayMode);
+
+		iPos.iX += scanLength;
+		iDataPtr += dstLength;
+
+		if (iPos.iX == iSourceRect.iBr.iX)
+			{
+			iPos.iX = iSourceRect.iTl.iX;
+			iPos.iY++;
+			iBytesToWrite = iPaddingBytes;
+			}
+		}
+	}
+