--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicsresourceservices/graphicsresourceimplementation/src/sgdriver.cpp	Tue Aug 31 16:31:06 2010 +0300
@@ -0,0 +1,569 @@
+// Copyright (c) 2007-2009 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:
+// Graphics Resource - driver implementation
+//
+
+#include "sgdriver.h"
+
+const TInt KSgMaxLocalChunkSize = 0x100000;
+const TInt KSgLocalChunkAlignment = 0x40;
+
+EXPORT_C TInt RSgDriver::Open()
+	{
+	if (iImpl)
+		{
+		return KErrInUse;
+		}
+	if (gPls.iError != KErrNone)
+		{
+		return gPls.iError;
+		}
+	gPls.iMutex.Wait();
+	if (gPls.iDriver)
+		{
+		++gPls.iOpenCount;
+		iImpl = gPls.iDriver;
+		gPls.iMutex.Signal();
+		return KErrNone;
+		}
+	RChunk chunk;
+	TInt err = chunk.CreateLocal(KMinHeapGrowBy, KSgMaxLocalChunkSize, EOwnerProcess);
+	if (err != KErrNone)
+		{
+		gPls.iMutex.Signal();
+		return err;
+		}
+	RHeap* heap = UserHeap::ChunkHeap(chunk, 0, KMinHeapGrowBy, KSgMaxLocalChunkSize, KSgLocalChunkAlignment, ETrue);
+	__ASSERT_DEBUG(heap, Panic(ESgPanicResourceImplGeneral));
+	XSgDriver* driver = static_cast<XSgDriver*>(heap->Alloc(sizeof(XSgDriver)));
+	__ASSERT_DEBUG(driver, Panic(ESgPanicResourceImplGeneral));
+	new(driver) XSgDriver(heap);
+	err = driver->Construct();
+	if (err != KErrNone)
+		{
+		driver->Delete();
+		gPls.iMutex.Signal();
+		return err;
+		}
+	gPls.iOpenCount = 1;
+	iImpl = gPls.iDriver = driver;
+	gPls.iMutex.Signal();
+	return KErrNone;
+	}
+
+EXPORT_C void RSgDriver::Close()
+	{
+	if (iImpl)
+		{
+		__ASSERT_DEBUG(gPls.iError == KErrNone, Panic(ESgPanicResourceImplGeneral));
+		gPls.iMutex.Wait();
+		__ASSERT_DEBUG(gPls.iOpenCount > 0, Panic(ESgPanicResourceImplGeneral));
+		if (--gPls.iOpenCount == 0)
+			{
+			gPls.iDriver->Delete();
+			gPls.iDriver = NULL;
+			}
+		iImpl = NULL;
+		gPls.iMutex.Signal();
+		}
+	}
+
+EXPORT_C TInt RSgDriver::GetInterface(TUid aInterfaceUid, TAny*& aInterfacePtr) const
+	{
+	aInterfacePtr = NULL;
+	if (!iImpl)
+		{
+		return KErrBadHandle;
+		}
+	return static_cast<XSgDriver*>(iImpl)->GetInterface(aInterfaceUid, aInterfacePtr);
+	}
+
+EXPORT_C TVersion RSgDriver::Version()
+	{
+	return TVersion(1, 1, 1);
+	}
+
+_LIT(KSgResourceImplPanicCategory, "SGRES-IMPL");
+
+void Panic(TSgResourceImplPanicReason aReason)
+	{
+	User::Panic(KSgResourceImplPanicCategory, aReason);
+	}
+
+#ifdef SYMBIAN_GRAPHICS_USE_GPU
+const TUint32 KSgResourceAttributes = 0;
+#else
+const TUint32 KSgResourceAttributes = ESgResourceAttrCpuCached;
+#endif
+
+LOCAL_C TInt SgMinDataStride(TInt aWidthInPixels, TInt aPixelFormat)
+	{
+	switch (aPixelFormat)
+		{
+	case ESgPixelFormatA_8:
+		return aWidthInPixels;
+	case ESgPixelFormatRGB_565:
+		return aWidthInPixels << 1;
+	case ESgPixelFormatXRGB_8888:
+	case ESgPixelFormatARGB_8888:
+	case ESgPixelFormatARGB_8888_PRE:
+		return aWidthInPixels << 2;
+	default:
+#ifdef _DEBUG
+		Panic(ESgPanicResourceImplGeneral);
+#endif
+		return 0;
+		}
+	}
+
+LOCAL_C TInt SgAlignedDataStride(TInt aWidthInPixels, TInt aPixelFormat)
+	{
+#if defined(SYMBIAN_GRAPHICS_USE_MBX)
+	// MBX requires 2^n stride
+	for (TInt width = 8; width & KMaxTInt; width <<= 1)
+		{
+		if (width >= aWidthInPixels)
+			{
+			aWidthInPixels = width;
+			break;
+			}
+		}
+#elif defined(SYMBIAN_GRAPHICS_USE_SGX)
+	// SGX requires 32-pixel alignment
+	aWidthInPixels = (aWidthInPixels + 31) & ~31;
+#endif
+	return Align4(SgMinDataStride(aWidthInPixels, aPixelFormat));
+	}
+
+XSgDriverPls::XSgDriverPls()
+	{
+	iError = iMutex.CreateLocal();
+	iOpenCount = 0;
+	iDriver = NULL;
+	}
+
+XSgDriver::XSgDriver(RHeap* aHeap)
+	: iHeap(aHeap), iHasOpenVg(EFalse), iHasOpenGles(EFalse), iHasOpenGles2(EFalse)
+	{
+	}
+
+XSgDriver::~XSgDriver()
+	{
+	iMutex.Close();
+	iDevice.Close();
+	__ASSERT_DEBUG(iImagesByAddress.Count() == 0, Panic(ESgPanicUnclosedResources));
+	__ASSERT_DEBUG(iImagesById.Count() == 0, Panic(ESgPanicUnclosedResources));
+	}
+
+TInt XSgDriver::Construct()
+	{
+	TInt err = iMutex.CreateLocal();
+	if (err != KErrNone)
+		{
+		return err;
+		}
+	err = User::LoadLogicalDevice(KSgDeviceName);
+	if (err != KErrNone && err != KErrAlreadyExists)
+		{
+		return err;
+		}
+	err = iDevice.Connect();
+	if (err != KErrNone)
+		{
+		return err;
+		}
+	_LIT(KLibOpenVg, "libOpenVG.dll");
+	_LIT(KLibOpenGles, "libGLESv1_CM.dll");
+	_LIT(KLibOpenGles2, "libGLESv2.dll");
+	RLibrary lib;
+	if (lib.Load(KLibOpenVg) == KErrNone)
+		{
+		lib.Close();
+		iHasOpenVg = ETrue;
+		}
+	if (lib.Load(KLibOpenGles) == KErrNone)
+		{
+		lib.Close();
+		iHasOpenGles = ETrue;
+		}
+	if (lib.Load(KLibOpenGles2) == KErrNone)
+		{
+		lib.Close();
+		iHasOpenGles2 = ETrue;
+		}
+	return KErrNone;
+	}
+
+void XSgDriver::Delete()
+	{
+	RHeap* heap = iHeap;
+	this->~XSgDriver();
+	heap->Free(this);
+	__ASSERT_DEBUG(heap->Count() == 0, Panic(ESgPanicUnclosedResources));
+	heap->Close();
+	}
+
+TInt XSgDriver::CreateImage(const TSgImageInfo& aInfo, const TAny* aDataAddress, TInt aDataStride, const TSgAttributeArrayBase* aAttributes, TAny*& aResult)
+	{
+	TInt err = CheckImageInfo(aInfo);
+	if (err != KErrNone)
+		{
+		return err;
+		}
+	TInt minDataStride = SgMinDataStride(aInfo.iSizeInPixels.iWidth, aInfo.iPixelFormat);
+	if (aDataAddress && Abs(aDataStride) < minDataStride)
+		{
+		return KErrArgument;
+		}
+	if (aAttributes)
+		{
+		return KErrNotSupported;
+		}
+	TUint32 attribs = KSgResourceAttributes | MatchingEglConfigUsage(aInfo.iUsage);
+	TPckgBuf<TSgImageMetaData> metaDataPckg;
+	metaDataPckg().iSizeInPixels = aInfo.iSizeInPixels;
+	metaDataPckg().iPixelFormat = aInfo.iPixelFormat;
+	TInt dataStride = SgAlignedDataStride(aInfo.iSizeInPixels.iWidth, aInfo.iPixelFormat);
+	TInt dataSize = dataStride * aInfo.iSizeInPixels.iHeight;
+	TSgDrawableId id;
+	err = iDevice.CreateResource(attribs, metaDataPckg, dataSize, id.iId);
+	if (err != KErrNone)
+		{
+		return err;
+		}
+	iMutex.Wait();
+	XSgImage* imageImpl = static_cast<XSgImage*>(iHeap->Alloc(sizeof(XSgImage)));
+	if (!imageImpl)
+		{
+		(void)iDevice.CloseResource(id.iId);
+		iMutex.Signal();
+		return KErrNoMemory;
+		}
+	new(imageImpl) XSgImage(id, attribs, metaDataPckg(), iDevice.ResourceDataAddress(id.iId), dataStride);
+	RHeap* prevHeap = User::SwitchHeap(iHeap);
+	err = iImagesByAddress.InsertInAddressOrder(imageImpl);
+	if (err == KErrNone)
+		{
+		err = iImagesById.InsertInOrder(imageImpl, XSgImage::Compare);
+		if (err != KErrNone)
+			{
+			iImagesByAddress.Remove(iImagesByAddress.FindInAddressOrder(imageImpl));
+			iImagesByAddress.GranularCompress();
+			}
+		}
+	User::SwitchHeap(prevHeap);
+	if (err == KErrNone)
+		{
+		if (aDataAddress)
+			{
+			const TAny* src = aDataStride > 0 ? aDataAddress : PtrAdd(aDataAddress, -aDataStride * (aInfo.iSizeInPixels.iHeight - 1));
+			TAny* trg = imageImpl->DataAddress();
+			for (TInt y = 0; y < aInfo.iSizeInPixels.iHeight; ++y)
+				{
+				Mem::Copy(trg, src, minDataStride);
+				src = PtrAdd(src, aDataStride);
+				trg = PtrAdd(trg, dataStride);
+				}
+			}
+		aResult = imageImpl;
+		}
+	else
+		{
+		(void)iDevice.CloseResource(id.iId);
+		iHeap->Free(imageImpl);
+		}
+	iMutex.Signal();
+	return err;
+	}
+
+TInt XSgDriver::CreateImage(const TSgImageInfo& aInfo, const XSgImage* aImageImpl, const TSgAttributeArrayBase* aAttributes, TAny*& aResult)
+	{
+	if (!aImageImpl)
+		{
+		return KErrArgument;
+		}
+	__ASSERT_ALWAYS(CheckImage(aImageImpl), Panic(ESgPanicBadDrawableHandle));
+	TSgImageInfo info;
+	aImageImpl->GetInfo(info);
+	if (aInfo.iSizeInPixels != info.iSizeInPixels || aInfo.iPixelFormat != info.iPixelFormat)
+		{
+		return KErrNotSupported;
+		}
+	return CreateImage(aInfo, aImageImpl->DataAddress(), aImageImpl->DataStride(), aAttributes, aResult);
+	}
+
+TInt XSgDriver::FindAndOpenImage(TSgDrawableId aId, const TSgAttributeArrayBase* aAttributes, TAny*& aResult)
+	{
+	if (aId == KSgNullDrawableId)
+		{
+		return KErrArgument;
+		}
+	if (aAttributes)
+		{
+		return KErrNotSupported;
+		}
+	TInt err;
+	iMutex.Wait();
+	TInt indexById = iImagesById.FindInOrder(aId, XSgImage::Compare);
+	if (indexById >= 0)
+		{
+		XSgImage* imageImpl = iImagesById[indexById];
+		err = imageImpl->Open();
+		if (err == KErrNone)
+			{
+			aResult = imageImpl;
+			}
+		}
+	else
+		{
+		err = iDevice.OpenResource(aId.iId);
+		if (err != KErrNone)
+			{
+			iMutex.Signal();
+			return err;
+			}
+		TPckgBuf<TSgImageMetaData> metaDataPckg;
+		err = iDevice.GetResourceMetaData(aId.iId, metaDataPckg);
+		if (metaDataPckg.Size() != sizeof(TSgImageMetaData))
+			{
+			err = KErrGeneral;
+			}
+		TUint32 attribs;
+		if (err == KErrNone)
+			{
+			attribs = iDevice.ResourceAttributes(aId.iId);
+			TSgImageInfo info(metaDataPckg().iSizeInPixels, metaDataPckg().iPixelFormat, attribs & KSgUsageBitMask);
+			if (CheckImageInfo(info) != KErrNone)
+				{
+				err = KErrGeneral;
+				}
+			}
+		TInt dataStride;
+		if (err == KErrNone)
+			{
+			dataStride = SgAlignedDataStride(metaDataPckg().iSizeInPixels.iWidth, metaDataPckg().iPixelFormat);
+			if (iDevice.ResourceDataSize(aId.iId) != dataStride * metaDataPckg().iSizeInPixels.iHeight)
+				{
+				err = KErrGeneral;
+				}
+			}
+		if (err != KErrNone)
+			{
+			(void)iDevice.CloseResource(aId.iId);
+			iMutex.Signal();
+			return err;
+			}
+		XSgImage* imageImpl = static_cast<XSgImage*>(iHeap->Alloc(sizeof(XSgImage)));
+		if (!imageImpl)
+			{
+			(void)iDevice.CloseResource(aId.iId);
+			iMutex.Signal();
+			return KErrNoMemory;
+			}
+		new(imageImpl) XSgImage(aId, attribs, metaDataPckg(), iDevice.ResourceDataAddress(aId.iId), dataStride);
+		RHeap* prevHeap = User::SwitchHeap(iHeap);
+		err = iImagesByAddress.InsertInAddressOrder(imageImpl);
+		if (err == KErrNone)
+			{
+			err = iImagesById.InsertInOrder(imageImpl, XSgImage::Compare);
+			if (err != KErrNone)
+				{
+				iImagesByAddress.Remove(iImagesByAddress.FindInAddressOrder(imageImpl));
+				iImagesByAddress.GranularCompress();
+				}
+			}
+		User::SwitchHeap(prevHeap);
+		if (err == KErrNone)
+			{
+			aResult = imageImpl;
+			}
+		else
+			{
+			(void)iDevice.CloseResource(aId.iId);
+			iHeap->Free(imageImpl);
+			}
+		}
+	iMutex.Signal();
+	return err;
+	}
+
+void XSgDriver::DeleteImage(XSgImage* aImageImpl)
+	{
+	iMutex.Wait();
+	TInt indexByAddress = iImagesByAddress.FindInAddressOrder(aImageImpl);
+	TInt indexById = iImagesById.FindInOrder(aImageImpl, XSgImage::Compare);
+	__ASSERT_DEBUG(indexByAddress >= 0 && indexById >= 0, Panic(ESgPanicBadImagePointer));
+	RHeap* prevHeap = User::SwitchHeap(iHeap);
+	iImagesByAddress.Remove(indexByAddress);
+	iImagesById.Remove(indexById);
+	iImagesByAddress.GranularCompress();
+	iImagesById.GranularCompress();
+	User::SwitchHeap(prevHeap);
+	(void)iDevice.CloseResource(aImageImpl->Id().iId);
+	aImageImpl->~XSgImage();
+	iHeap->Free(aImageImpl);
+	iMutex.Signal();
+	}
+
+TUint32 XSgDriver::MatchingEglConfigUsage(TUint32 aUsage) const
+	{
+	if (aUsage & KSgUsageAllSurfaceTypes)
+		{
+		if (iHasOpenVg)
+			{
+			aUsage |= ESgUsageBitOpenVgSurface;
+			}
+		if (iHasOpenGles)
+			{
+			aUsage |= ESgUsageBitOpenGlesSurface;
+			}
+		if (iHasOpenGles2)
+			{
+			aUsage |= ESgUsageBitOpenGles2Surface;
+			}
+		}
+	return aUsage;
+	}
+
+TInt XSgDriver::CheckImageInfo(const TSgImageInfo& aInfo) const
+	{
+	if (aInfo.iSizeInPixels.iWidth <= 0 || aInfo.iSizeInPixels.iHeight <= 0
+		|| aInfo.iPixelFormat == EUidPixelFormatUnknown || aInfo.iUsage == 0)
+		{
+		return KErrArgument;
+		}
+	if (aInfo.iSizeInPixels.iWidth > KMaxTInt16 / 2 || aInfo.iSizeInPixels.iHeight > KMaxTInt16 / 2)
+		{
+		return KErrTooBig;
+		}
+	if (aInfo.iUsage & ~KSgUsageAll)
+		{
+		return KErrNotSupported;
+		}
+	if ((aInfo.iUsage & (ESgUsageBitOpenVgImage | ESgUsageBitOpenVgSurface)) && !iHasOpenVg
+		|| (aInfo.iUsage & (ESgUsageBitOpenGlesTexture2D | ESgUsageBitOpenGlesSurface)) && !iHasOpenGles
+		|| (aInfo.iUsage & (ESgUsageBitOpenGles2Texture2D | ESgUsageBitOpenGles2Surface)) && !iHasOpenGles2)
+		{
+		return KErrNotSupported;
+		}
+	switch (aInfo.iPixelFormat)
+		{
+	case ESgPixelFormatA_8:
+		if (aInfo.iUsage & KSgUsageAllSurfaceTypes)
+			{
+			return KErrNotSupported;
+			}
+		// coverity[fallthrough]
+	case ESgPixelFormatRGB_565:
+	case ESgPixelFormatXRGB_8888:
+	case ESgPixelFormatARGB_8888:
+	case ESgPixelFormatARGB_8888_PRE:
+		return KErrNone;
+	default:
+		return KErrNotSupported;
+		}
+	}
+
+TBool XSgDriver::CheckImage(const TAny* aImageImpl) const
+	{
+	iMutex.Wait();
+	TInt indexByAddress = iImagesByAddress.FindInAddressOrder(static_cast<const XSgImage*>(aImageImpl));
+	iMutex.Signal();
+	return indexByAddress >= 0;
+	}
+
+TInt XSgDriver::GetInterface(TUid aInterfaceUid, TAny*& aInterfacePtr)
+	{
+	if (aInterfaceUid == KNullUid)
+		{
+		return KErrArgument;
+		}
+	if (aInterfaceUid.iUid == MSgDriver_Profiling::EInterfaceUid)
+		{
+		aInterfacePtr = static_cast<MSgDriver_Profiling*>(this);
+		return KErrNone;
+		}
+#ifdef _DEBUG
+	if (aInterfaceUid.iUid == MSgDriver_Test::EInterfaceUid)
+		{
+		aInterfacePtr = static_cast<MSgDriver_Test*>(this);
+		return KErrNone;
+		}
+#endif
+	return KErrExtensionNotSupported;
+	}
+
+TInt XSgDriver::LocalResourceCount() const
+	{
+	TInt count = 0;
+	iMutex.Wait();
+	TInt n = iImagesByAddress.Count();
+	for (TInt i = 0; i < n; ++i)
+		{
+		count += iImagesByAddress[i]->RefCount();
+		}
+	iMutex.Signal();
+	return count;
+	}
+
+TInt XSgDriver::GlobalResourceCount() const
+	{
+	return iDevice.GlobalResourceCount();
+	}
+
+TInt XSgDriver::LocalGraphicsMemoryUsed() const
+	{
+	return iDevice.LocalGraphicsMemoryUsed();
+	}
+
+TInt XSgDriver::GlobalGraphicsMemoryUsed() const
+	{
+	return iDevice.GlobalGraphicsMemoryUsed();
+	}
+
+#ifdef _DEBUG
+
+void XSgDriver::AllocMarkStart()
+	{
+	iMutex.Wait();
+	iHeap->__DbgMarkStart();
+	iMutex.Signal();
+	}
+
+void XSgDriver::AllocMarkEnd(TInt aCount)
+	{
+	iMutex.Wait();
+	TUint32 badCell = iHeap->__DbgMarkEnd(aCount);
+	iMutex.Signal();
+	if (badCell != 0)
+		{
+		_LIT(KPanicCategoryFormat, "SGALLOC:%08x");
+		TBuf<0x10> category;
+		category.Format(KPanicCategoryFormat, badCell);
+		User::Panic(category, 0);
+		}
+	}
+
+void XSgDriver::SetAllocFail(RAllocator::TAllocFail aType, TInt aRate)
+	{
+	iMutex.Wait();
+	iHeap->__DbgSetAllocFail(aType, aRate);
+	iMutex.Signal();
+	}
+
+#endif // _DEBUG
+
+#ifndef __WINS__
+XSgDriverPls gPls;
+#endif