sl@0: // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // Graphics Resource - driver implementation
sl@0: //
sl@0: 
sl@0: #include "sgdriver.h"
sl@0: 
sl@0: const TInt KSgMaxLocalChunkSize = 0x100000;
sl@0: const TInt KSgLocalChunkAlignment = 0x40;
sl@0: 
sl@0: EXPORT_C TInt RSgDriver::Open()
sl@0: 	{
sl@0: 	if (iImpl)
sl@0: 		{
sl@0: 		return KErrInUse;
sl@0: 		}
sl@0: 	if (gPls.iError != KErrNone)
sl@0: 		{
sl@0: 		return gPls.iError;
sl@0: 		}
sl@0: 	gPls.iMutex.Wait();
sl@0: 	if (gPls.iDriver)
sl@0: 		{
sl@0: 		++gPls.iOpenCount;
sl@0: 		iImpl = gPls.iDriver;
sl@0: 		gPls.iMutex.Signal();
sl@0: 		return KErrNone;
sl@0: 		}
sl@0: 	RChunk chunk;
sl@0: 	TInt err = chunk.CreateLocal(KMinHeapGrowBy, KSgMaxLocalChunkSize, EOwnerProcess);
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		gPls.iMutex.Signal();
sl@0: 		return err;
sl@0: 		}
sl@0: 	RHeap* heap = UserHeap::ChunkHeap(chunk, 0, KMinHeapGrowBy, KSgMaxLocalChunkSize, KSgLocalChunkAlignment, ETrue);
sl@0: 	__ASSERT_DEBUG(heap, Panic(ESgPanicResourceImplGeneral));
sl@0: 	XSgDriver* driver = static_cast<XSgDriver*>(heap->Alloc(sizeof(XSgDriver)));
sl@0: 	__ASSERT_DEBUG(driver, Panic(ESgPanicResourceImplGeneral));
sl@0: 	new(driver) XSgDriver(heap);
sl@0: 	err = driver->Construct();
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		driver->Delete();
sl@0: 		gPls.iMutex.Signal();
sl@0: 		return err;
sl@0: 		}
sl@0: 	gPls.iOpenCount = 1;
sl@0: 	iImpl = gPls.iDriver = driver;
sl@0: 	gPls.iMutex.Signal();
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void RSgDriver::Close()
sl@0: 	{
sl@0: 	if (iImpl)
sl@0: 		{
sl@0: 		__ASSERT_DEBUG(gPls.iError == KErrNone, Panic(ESgPanicResourceImplGeneral));
sl@0: 		gPls.iMutex.Wait();
sl@0: 		__ASSERT_DEBUG(gPls.iOpenCount > 0, Panic(ESgPanicResourceImplGeneral));
sl@0: 		if (--gPls.iOpenCount == 0)
sl@0: 			{
sl@0: 			gPls.iDriver->Delete();
sl@0: 			gPls.iDriver = NULL;
sl@0: 			}
sl@0: 		iImpl = NULL;
sl@0: 		gPls.iMutex.Signal();
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt RSgDriver::GetInterface(TUid aInterfaceUid, TAny*& aInterfacePtr) const
sl@0: 	{
sl@0: 	aInterfacePtr = NULL;
sl@0: 	if (!iImpl)
sl@0: 		{
sl@0: 		return KErrBadHandle;
sl@0: 		}
sl@0: 	return static_cast<XSgDriver*>(iImpl)->GetInterface(aInterfaceUid, aInterfacePtr);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TVersion RSgDriver::Version()
sl@0: 	{
sl@0: 	return TVersion(1, 1, 1);
sl@0: 	}
sl@0: 
sl@0: _LIT(KSgResourceImplPanicCategory, "SGRES-IMPL");
sl@0: 
sl@0: void Panic(TSgResourceImplPanicReason aReason)
sl@0: 	{
sl@0: 	User::Panic(KSgResourceImplPanicCategory, aReason);
sl@0: 	}
sl@0: 
sl@0: #ifdef SYMBIAN_GRAPHICS_USE_GPU
sl@0: const TUint32 KSgResourceAttributes = 0;
sl@0: #else
sl@0: const TUint32 KSgResourceAttributes = ESgResourceAttrCpuCached;
sl@0: #endif
sl@0: 
sl@0: LOCAL_C TInt SgMinDataStride(TInt aWidthInPixels, TInt aPixelFormat)
sl@0: 	{
sl@0: 	switch (aPixelFormat)
sl@0: 		{
sl@0: 	case ESgPixelFormatA_8:
sl@0: 		return aWidthInPixels;
sl@0: 	case ESgPixelFormatRGB_565:
sl@0: 		return aWidthInPixels << 1;
sl@0: 	case ESgPixelFormatXRGB_8888:
sl@0: 	case ESgPixelFormatARGB_8888:
sl@0: 	case ESgPixelFormatARGB_8888_PRE:
sl@0: 		return aWidthInPixels << 2;
sl@0: 	default:
sl@0: #ifdef _DEBUG
sl@0: 		Panic(ESgPanicResourceImplGeneral);
sl@0: #endif
sl@0: 		return 0;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: LOCAL_C TInt SgAlignedDataStride(TInt aWidthInPixels, TInt aPixelFormat)
sl@0: 	{
sl@0: #if defined(SYMBIAN_GRAPHICS_USE_MBX)
sl@0: 	// MBX requires 2^n stride
sl@0: 	for (TInt width = 8; width & KMaxTInt; width <<= 1)
sl@0: 		{
sl@0: 		if (width >= aWidthInPixels)
sl@0: 			{
sl@0: 			aWidthInPixels = width;
sl@0: 			break;
sl@0: 			}
sl@0: 		}
sl@0: #elif defined(SYMBIAN_GRAPHICS_USE_SGX)
sl@0: 	// SGX requires 32-pixel alignment
sl@0: 	aWidthInPixels = (aWidthInPixels + 31) & ~31;
sl@0: #endif
sl@0: 	return Align4(SgMinDataStride(aWidthInPixels, aPixelFormat));
sl@0: 	}
sl@0: 
sl@0: XSgDriverPls::XSgDriverPls()
sl@0: 	{
sl@0: 	iError = iMutex.CreateLocal();
sl@0: 	iOpenCount = 0;
sl@0: 	iDriver = NULL;
sl@0: 	}
sl@0: 
sl@0: XSgDriver::XSgDriver(RHeap* aHeap)
sl@0: 	: iHeap(aHeap), iHasOpenVg(EFalse), iHasOpenGles(EFalse), iHasOpenGles2(EFalse)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: XSgDriver::~XSgDriver()
sl@0: 	{
sl@0: 	iMutex.Close();
sl@0: 	iDevice.Close();
sl@0: 	__ASSERT_DEBUG(iImagesByAddress.Count() == 0, Panic(ESgPanicUnclosedResources));
sl@0: 	__ASSERT_DEBUG(iImagesById.Count() == 0, Panic(ESgPanicUnclosedResources));
sl@0: 	}
sl@0: 
sl@0: TInt XSgDriver::Construct()
sl@0: 	{
sl@0: 	TInt err = iMutex.CreateLocal();
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		return err;
sl@0: 		}
sl@0: 	err = User::LoadLogicalDevice(KSgDeviceName);
sl@0: 	if (err != KErrNone && err != KErrAlreadyExists)
sl@0: 		{
sl@0: 		return err;
sl@0: 		}
sl@0: 	err = iDevice.Connect();
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		return err;
sl@0: 		}
sl@0: 	_LIT(KLibOpenVg, "libOpenVG.dll");
sl@0: 	_LIT(KLibOpenGles, "libGLESv1_CM.dll");
sl@0: 	_LIT(KLibOpenGles2, "libGLESv2.dll");
sl@0: 	RLibrary lib;
sl@0: 	if (lib.Load(KLibOpenVg) == KErrNone)
sl@0: 		{
sl@0: 		lib.Close();
sl@0: 		iHasOpenVg = ETrue;
sl@0: 		}
sl@0: 	if (lib.Load(KLibOpenGles) == KErrNone)
sl@0: 		{
sl@0: 		lib.Close();
sl@0: 		iHasOpenGles = ETrue;
sl@0: 		}
sl@0: 	if (lib.Load(KLibOpenGles2) == KErrNone)
sl@0: 		{
sl@0: 		lib.Close();
sl@0: 		iHasOpenGles2 = ETrue;
sl@0: 		}
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: void XSgDriver::Delete()
sl@0: 	{
sl@0: 	RHeap* heap = iHeap;
sl@0: 	this->~XSgDriver();
sl@0: 	heap->Free(this);
sl@0: 	__ASSERT_DEBUG(heap->Count() == 0, Panic(ESgPanicUnclosedResources));
sl@0: 	heap->Close();
sl@0: 	}
sl@0: 
sl@0: TInt XSgDriver::CreateImage(const TSgImageInfo& aInfo, const TAny* aDataAddress, TInt aDataStride, const TSgAttributeArrayBase* aAttributes, TAny*& aResult)
sl@0: 	{
sl@0: 	TInt err = CheckImageInfo(aInfo);
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		return err;
sl@0: 		}
sl@0: 	TInt minDataStride = SgMinDataStride(aInfo.iSizeInPixels.iWidth, aInfo.iPixelFormat);
sl@0: 	if (aDataAddress && Abs(aDataStride) < minDataStride)
sl@0: 		{
sl@0: 		return KErrArgument;
sl@0: 		}
sl@0: 	if (aAttributes)
sl@0: 		{
sl@0: 		return KErrNotSupported;
sl@0: 		}
sl@0: 	TUint32 attribs = KSgResourceAttributes | MatchingEglConfigUsage(aInfo.iUsage);
sl@0: 	TPckgBuf<TSgImageMetaData> metaDataPckg;
sl@0: 	metaDataPckg().iSizeInPixels = aInfo.iSizeInPixels;
sl@0: 	metaDataPckg().iPixelFormat = aInfo.iPixelFormat;
sl@0: 	TInt dataStride = SgAlignedDataStride(aInfo.iSizeInPixels.iWidth, aInfo.iPixelFormat);
sl@0: 	TInt dataSize = dataStride * aInfo.iSizeInPixels.iHeight;
sl@0: 	TSgDrawableId id;
sl@0: 	err = iDevice.CreateResource(attribs, metaDataPckg, dataSize, id.iId);
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		return err;
sl@0: 		}
sl@0: 	iMutex.Wait();
sl@0: 	XSgImage* imageImpl = static_cast<XSgImage*>(iHeap->Alloc(sizeof(XSgImage)));
sl@0: 	if (!imageImpl)
sl@0: 		{
sl@0: 		(void)iDevice.CloseResource(id.iId);
sl@0: 		iMutex.Signal();
sl@0: 		return KErrNoMemory;
sl@0: 		}
sl@0: 	new(imageImpl) XSgImage(id, attribs, metaDataPckg(), iDevice.ResourceDataAddress(id.iId), dataStride);
sl@0: 	RHeap* prevHeap = User::SwitchHeap(iHeap);
sl@0: 	err = iImagesByAddress.InsertInAddressOrder(imageImpl);
sl@0: 	if (err == KErrNone)
sl@0: 		{
sl@0: 		err = iImagesById.InsertInOrder(imageImpl, XSgImage::Compare);
sl@0: 		if (err != KErrNone)
sl@0: 			{
sl@0: 			iImagesByAddress.Remove(iImagesByAddress.FindInAddressOrder(imageImpl));
sl@0: 			iImagesByAddress.GranularCompress();
sl@0: 			}
sl@0: 		}
sl@0: 	User::SwitchHeap(prevHeap);
sl@0: 	if (err == KErrNone)
sl@0: 		{
sl@0: 		if (aDataAddress)
sl@0: 			{
sl@0: 			const TAny* src = aDataStride > 0 ? aDataAddress : PtrAdd(aDataAddress, -aDataStride * (aInfo.iSizeInPixels.iHeight - 1));
sl@0: 			TAny* trg = imageImpl->DataAddress();
sl@0: 			for (TInt y = 0; y < aInfo.iSizeInPixels.iHeight; ++y)
sl@0: 				{
sl@0: 				Mem::Copy(trg, src, minDataStride);
sl@0: 				src = PtrAdd(src, aDataStride);
sl@0: 				trg = PtrAdd(trg, dataStride);
sl@0: 				}
sl@0: 			}
sl@0: 		aResult = imageImpl;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		(void)iDevice.CloseResource(id.iId);
sl@0: 		iHeap->Free(imageImpl);
sl@0: 		}
sl@0: 	iMutex.Signal();
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: TInt XSgDriver::CreateImage(const TSgImageInfo& aInfo, const XSgImage* aImageImpl, const TSgAttributeArrayBase* aAttributes, TAny*& aResult)
sl@0: 	{
sl@0: 	if (!aImageImpl)
sl@0: 		{
sl@0: 		return KErrArgument;
sl@0: 		}
sl@0: 	__ASSERT_ALWAYS(CheckImage(aImageImpl), Panic(ESgPanicBadDrawableHandle));
sl@0: 	TSgImageInfo info;
sl@0: 	aImageImpl->GetInfo(info);
sl@0: 	if (aInfo.iSizeInPixels != info.iSizeInPixels || aInfo.iPixelFormat != info.iPixelFormat)
sl@0: 		{
sl@0: 		return KErrNotSupported;
sl@0: 		}
sl@0: 	return CreateImage(aInfo, aImageImpl->DataAddress(), aImageImpl->DataStride(), aAttributes, aResult);
sl@0: 	}
sl@0: 
sl@0: TInt XSgDriver::FindAndOpenImage(TSgDrawableId aId, const TSgAttributeArrayBase* aAttributes, TAny*& aResult)
sl@0: 	{
sl@0: 	if (aId == KSgNullDrawableId)
sl@0: 		{
sl@0: 		return KErrArgument;
sl@0: 		}
sl@0: 	if (aAttributes)
sl@0: 		{
sl@0: 		return KErrNotSupported;
sl@0: 		}
sl@0: 	TInt err;
sl@0: 	iMutex.Wait();
sl@0: 	TInt indexById = iImagesById.FindInOrder(aId, XSgImage::Compare);
sl@0: 	if (indexById >= 0)
sl@0: 		{
sl@0: 		XSgImage* imageImpl = iImagesById[indexById];
sl@0: 		err = imageImpl->Open();
sl@0: 		if (err == KErrNone)
sl@0: 			{
sl@0: 			aResult = imageImpl;
sl@0: 			}
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		err = iDevice.OpenResource(aId.iId);
sl@0: 		if (err != KErrNone)
sl@0: 			{
sl@0: 			iMutex.Signal();
sl@0: 			return err;
sl@0: 			}
sl@0: 		TPckgBuf<TSgImageMetaData> metaDataPckg;
sl@0: 		err = iDevice.GetResourceMetaData(aId.iId, metaDataPckg);
sl@0: 		if (metaDataPckg.Size() != sizeof(TSgImageMetaData))
sl@0: 			{
sl@0: 			err = KErrGeneral;
sl@0: 			}
sl@0: 		TUint32 attribs;
sl@0: 		if (err == KErrNone)
sl@0: 			{
sl@0: 			attribs = iDevice.ResourceAttributes(aId.iId);
sl@0: 			TSgImageInfo info(metaDataPckg().iSizeInPixels, metaDataPckg().iPixelFormat, attribs & KSgUsageBitMask);
sl@0: 			if (CheckImageInfo(info) != KErrNone)
sl@0: 				{
sl@0: 				err = KErrGeneral;
sl@0: 				}
sl@0: 			}
sl@0: 		TInt dataStride;
sl@0: 		if (err == KErrNone)
sl@0: 			{
sl@0: 			dataStride = SgAlignedDataStride(metaDataPckg().iSizeInPixels.iWidth, metaDataPckg().iPixelFormat);
sl@0: 			if (iDevice.ResourceDataSize(aId.iId) != dataStride * metaDataPckg().iSizeInPixels.iHeight)
sl@0: 				{
sl@0: 				err = KErrGeneral;
sl@0: 				}
sl@0: 			}
sl@0: 		if (err != KErrNone)
sl@0: 			{
sl@0: 			(void)iDevice.CloseResource(aId.iId);
sl@0: 			iMutex.Signal();
sl@0: 			return err;
sl@0: 			}
sl@0: 		XSgImage* imageImpl = static_cast<XSgImage*>(iHeap->Alloc(sizeof(XSgImage)));
sl@0: 		if (!imageImpl)
sl@0: 			{
sl@0: 			(void)iDevice.CloseResource(aId.iId);
sl@0: 			iMutex.Signal();
sl@0: 			return KErrNoMemory;
sl@0: 			}
sl@0: 		new(imageImpl) XSgImage(aId, attribs, metaDataPckg(), iDevice.ResourceDataAddress(aId.iId), dataStride);
sl@0: 		RHeap* prevHeap = User::SwitchHeap(iHeap);
sl@0: 		err = iImagesByAddress.InsertInAddressOrder(imageImpl);
sl@0: 		if (err == KErrNone)
sl@0: 			{
sl@0: 			err = iImagesById.InsertInOrder(imageImpl, XSgImage::Compare);
sl@0: 			if (err != KErrNone)
sl@0: 				{
sl@0: 				iImagesByAddress.Remove(iImagesByAddress.FindInAddressOrder(imageImpl));
sl@0: 				iImagesByAddress.GranularCompress();
sl@0: 				}
sl@0: 			}
sl@0: 		User::SwitchHeap(prevHeap);
sl@0: 		if (err == KErrNone)
sl@0: 			{
sl@0: 			aResult = imageImpl;
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			(void)iDevice.CloseResource(aId.iId);
sl@0: 			iHeap->Free(imageImpl);
sl@0: 			}
sl@0: 		}
sl@0: 	iMutex.Signal();
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: void XSgDriver::DeleteImage(XSgImage* aImageImpl)
sl@0: 	{
sl@0: 	iMutex.Wait();
sl@0: 	TInt indexByAddress = iImagesByAddress.FindInAddressOrder(aImageImpl);
sl@0: 	TInt indexById = iImagesById.FindInOrder(aImageImpl, XSgImage::Compare);
sl@0: 	__ASSERT_DEBUG(indexByAddress >= 0 && indexById >= 0, Panic(ESgPanicBadImagePointer));
sl@0: 	RHeap* prevHeap = User::SwitchHeap(iHeap);
sl@0: 	iImagesByAddress.Remove(indexByAddress);
sl@0: 	iImagesById.Remove(indexById);
sl@0: 	iImagesByAddress.GranularCompress();
sl@0: 	iImagesById.GranularCompress();
sl@0: 	User::SwitchHeap(prevHeap);
sl@0: 	(void)iDevice.CloseResource(aImageImpl->Id().iId);
sl@0: 	aImageImpl->~XSgImage();
sl@0: 	iHeap->Free(aImageImpl);
sl@0: 	iMutex.Signal();
sl@0: 	}
sl@0: 
sl@0: TUint32 XSgDriver::MatchingEglConfigUsage(TUint32 aUsage) const
sl@0: 	{
sl@0: 	if (aUsage & KSgUsageAllSurfaceTypes)
sl@0: 		{
sl@0: 		if (iHasOpenVg)
sl@0: 			{
sl@0: 			aUsage |= ESgUsageBitOpenVgSurface;
sl@0: 			}
sl@0: 		if (iHasOpenGles)
sl@0: 			{
sl@0: 			aUsage |= ESgUsageBitOpenGlesSurface;
sl@0: 			}
sl@0: 		if (iHasOpenGles2)
sl@0: 			{
sl@0: 			aUsage |= ESgUsageBitOpenGles2Surface;
sl@0: 			}
sl@0: 		}
sl@0: 	return aUsage;
sl@0: 	}
sl@0: 
sl@0: TInt XSgDriver::CheckImageInfo(const TSgImageInfo& aInfo) const
sl@0: 	{
sl@0: 	if (aInfo.iSizeInPixels.iWidth <= 0 || aInfo.iSizeInPixels.iHeight <= 0
sl@0: 		|| aInfo.iPixelFormat == EUidPixelFormatUnknown || aInfo.iUsage == 0)
sl@0: 		{
sl@0: 		return KErrArgument;
sl@0: 		}
sl@0: 	if (aInfo.iSizeInPixels.iWidth > KMaxTInt16 / 2 || aInfo.iSizeInPixels.iHeight > KMaxTInt16 / 2)
sl@0: 		{
sl@0: 		return KErrTooBig;
sl@0: 		}
sl@0: 	if (aInfo.iUsage & ~KSgUsageAll)
sl@0: 		{
sl@0: 		return KErrNotSupported;
sl@0: 		}
sl@0: 	if ((aInfo.iUsage & (ESgUsageBitOpenVgImage | ESgUsageBitOpenVgSurface)) && !iHasOpenVg
sl@0: 		|| (aInfo.iUsage & (ESgUsageBitOpenGlesTexture2D | ESgUsageBitOpenGlesSurface)) && !iHasOpenGles
sl@0: 		|| (aInfo.iUsage & (ESgUsageBitOpenGles2Texture2D | ESgUsageBitOpenGles2Surface)) && !iHasOpenGles2)
sl@0: 		{
sl@0: 		return KErrNotSupported;
sl@0: 		}
sl@0: 	switch (aInfo.iPixelFormat)
sl@0: 		{
sl@0: 	case ESgPixelFormatA_8:
sl@0: 		if (aInfo.iUsage & KSgUsageAllSurfaceTypes)
sl@0: 			{
sl@0: 			return KErrNotSupported;
sl@0: 			}
sl@0: 		// coverity[fallthrough]
sl@0: 	case ESgPixelFormatRGB_565:
sl@0: 	case ESgPixelFormatXRGB_8888:
sl@0: 	case ESgPixelFormatARGB_8888:
sl@0: 	case ESgPixelFormatARGB_8888_PRE:
sl@0: 		return KErrNone;
sl@0: 	default:
sl@0: 		return KErrNotSupported;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: TBool XSgDriver::CheckImage(const TAny* aImageImpl) const
sl@0: 	{
sl@0: 	iMutex.Wait();
sl@0: 	TInt indexByAddress = iImagesByAddress.FindInAddressOrder(static_cast<const XSgImage*>(aImageImpl));
sl@0: 	iMutex.Signal();
sl@0: 	return indexByAddress >= 0;
sl@0: 	}
sl@0: 
sl@0: TInt XSgDriver::GetInterface(TUid aInterfaceUid, TAny*& aInterfacePtr)
sl@0: 	{
sl@0: 	if (aInterfaceUid == KNullUid)
sl@0: 		{
sl@0: 		return KErrArgument;
sl@0: 		}
sl@0: 	if (aInterfaceUid.iUid == MSgDriver_Profiling::EInterfaceUid)
sl@0: 		{
sl@0: 		aInterfacePtr = static_cast<MSgDriver_Profiling*>(this);
sl@0: 		return KErrNone;
sl@0: 		}
sl@0: #ifdef _DEBUG
sl@0: 	if (aInterfaceUid.iUid == MSgDriver_Test::EInterfaceUid)
sl@0: 		{
sl@0: 		aInterfacePtr = static_cast<MSgDriver_Test*>(this);
sl@0: 		return KErrNone;
sl@0: 		}
sl@0: #endif
sl@0: 	return KErrExtensionNotSupported;
sl@0: 	}
sl@0: 
sl@0: TInt XSgDriver::LocalResourceCount() const
sl@0: 	{
sl@0: 	TInt count = 0;
sl@0: 	iMutex.Wait();
sl@0: 	TInt n = iImagesByAddress.Count();
sl@0: 	for (TInt i = 0; i < n; ++i)
sl@0: 		{
sl@0: 		count += iImagesByAddress[i]->RefCount();
sl@0: 		}
sl@0: 	iMutex.Signal();
sl@0: 	return count;
sl@0: 	}
sl@0: 
sl@0: TInt XSgDriver::GlobalResourceCount() const
sl@0: 	{
sl@0: 	return iDevice.GlobalResourceCount();
sl@0: 	}
sl@0: 
sl@0: TInt XSgDriver::LocalGraphicsMemoryUsed() const
sl@0: 	{
sl@0: 	return iDevice.LocalGraphicsMemoryUsed();
sl@0: 	}
sl@0: 
sl@0: TInt XSgDriver::GlobalGraphicsMemoryUsed() const
sl@0: 	{
sl@0: 	return iDevice.GlobalGraphicsMemoryUsed();
sl@0: 	}
sl@0: 
sl@0: #ifdef _DEBUG
sl@0: 
sl@0: void XSgDriver::AllocMarkStart()
sl@0: 	{
sl@0: 	iMutex.Wait();
sl@0: 	iHeap->__DbgMarkStart();
sl@0: 	iMutex.Signal();
sl@0: 	}
sl@0: 
sl@0: void XSgDriver::AllocMarkEnd(TInt aCount)
sl@0: 	{
sl@0: 	iMutex.Wait();
sl@0: 	TUint32 badCell = iHeap->__DbgMarkEnd(aCount);
sl@0: 	iMutex.Signal();
sl@0: 	if (badCell != 0)
sl@0: 		{
sl@0: 		_LIT(KPanicCategoryFormat, "SGALLOC:%08x");
sl@0: 		TBuf<0x10> category;
sl@0: 		category.Format(KPanicCategoryFormat, badCell);
sl@0: 		User::Panic(category, 0);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void XSgDriver::SetAllocFail(RAllocator::TAllocFail aType, TInt aRate)
sl@0: 	{
sl@0: 	iMutex.Wait();
sl@0: 	iHeap->__DbgSetAllocFail(aType, aRate);
sl@0: 	iMutex.Signal();
sl@0: 	}
sl@0: 
sl@0: #endif // _DEBUG
sl@0: 
sl@0: #ifndef __WINS__
sl@0: XSgDriverPls gPls;
sl@0: #endif