diff -r 000000000000 -r 5d03bc08d59c graphicsdeviceinterface/screendriver/sgeneric/scnew.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graphicsdeviceinterface/screendriver/sgeneric/scnew.cpp Tue Feb 02 01:47:50 2010 +0200 @@ -0,0 +1,650 @@ +// Copyright (c) 2006-2009 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: +// This module implements the functions that create the screen class depending +// on the screen type. +// Include files +// +// + +/** + @file +*/ +/********************************************************************/ +#include "BITDRAW.H" +#include +#include "ScreenInfo.h" +#include "scdraw.h" +#include "scdraw.inl" +#include + + +/** +Creates an instance of CFbsDrawDevice class. +@param aScreenNo Screen number +@param aDispMode Display mode +@param aScreenInfo Screen parameters: video memory address and screen size +@return A pointer to the created CFbsDrawDevice object +@leave System-wide error code including KErrNoMemory +@internalComponent +*/ +static CFbsDrawDevice* CreateInstanceL(TInt aScreenNo, + TDisplayMode aDispMode, + const TScreenInfo& aScreenInfo) + { + CFbsDrawDevice* drawDevice = NULL; + + TInt modeCount; + TInt matchedMode=-1; + //there is some "ambiguity" about 24 and 32 bit modes... + //They are both byte per color component, and both actually have 32 bits per pixel memory use. + //This ambiguity does not exist between 12 and 16 bit modes, + //because they are distinct color component patterns (x444, 565) + //but for now 24 and 32 bit modes are considered equivalent here. + + if (HAL::Get(aScreenNo, HALData::EDisplayNumModes,modeCount)== KErrNone && modeCount>=1) + { //If multiple modes are supported then the highest bpp must be found + + TInt reqBpp= TDisplayModeUtils::NumDisplayModeBitsPerPixel(aDispMode); + TInt reqBpp2=reqBpp; + if ( reqBpp==24 || reqBpp==32 ) //Best to be specific here. Who knows how likely is 30 or 64 bpp support? + { + reqBpp2=32+24 - reqBpp; //reflect 24<==>32 + //Important compile-time decision embedded here: Only one 32-bit mode is supported + if(CFbsDrawDevice::DisplayMode16M() != aDispMode) + { + User::Leave(KErrNotSupported); + } + } + for (TInt mode=0; modeConstructScreen( + aScreenNo, + aScreenInfo.iAddress, + aScreenInfo.iSize,matchedMode)); + } + break; + /** Four grayscales display mode (2 bpp) */ + case EGray4: + { + CDrawTwoBppScreenBitmap* drawDeviceX = new (ELeave) CDrawTwoBppScreenBitmap; + drawDevice=drawDeviceX; + CleanupStack::PushL(drawDevice) ; + User::LeaveIfError(drawDeviceX->ConstructScreen( + aScreenNo, + aScreenInfo.iAddress, + aScreenInfo.iSize,matchedMode)); + } + break; + /** 16 grayscales display mode (4 bpp) */ + case EGray16: + { + CDrawFourBppScreenBitmapGray* drawDeviceX = new (ELeave) CDrawFourBppScreenBitmapGray; + drawDevice=drawDeviceX; + CleanupStack::PushL(drawDevice) ; + User::LeaveIfError(drawDeviceX->ConstructScreen( + aScreenNo, + aScreenInfo.iAddress, + aScreenInfo.iSize,matchedMode)); + } + break; + /** 256 grayscales display mode (8 bpp) */ + case EGray256: + { + CDrawEightBppScreenBitmapGray* drawDeviceX = new (ELeave) CDrawEightBppScreenBitmapGray; + drawDevice=drawDeviceX; + CleanupStack::PushL(drawDevice) ; + User::LeaveIfError(drawDeviceX->ConstructScreen( + aScreenNo, + aScreenInfo.iAddress, + aScreenInfo.iSize,matchedMode)); + } + break; + /** Low colour EGA 16 colour display mode (4 bpp) */ + case EColor16: + { + CDrawFourBppScreenBitmapColor* drawDeviceX = new (ELeave) CDrawFourBppScreenBitmapColor; + drawDevice=drawDeviceX; + CleanupStack::PushL(drawDevice) ; + User::LeaveIfError(drawDeviceX->ConstructScreen( + aScreenNo, + aScreenInfo.iAddress, + aScreenInfo.iSize,matchedMode)); + } + break; + /** 256 colour display mode (8 bpp) */ + case EColor256: + { + CDrawEightBppScreenBitmapColor* drawDeviceX = new (ELeave) CDrawEightBppScreenBitmapColor; + drawDevice=drawDeviceX; + CleanupStack::PushL(drawDevice) ; + User::LeaveIfError(drawDeviceX->ConstructScreen( + aScreenNo, + aScreenInfo.iAddress, + aScreenInfo.iSize,matchedMode)); + } + break; + /** 4,000 colour display mode (16 bpp) */ + case EColor4K: // 12 Bpp color mode + { + CDrawTwelveBppScreenBitmapColor* drawDeviceX = new (ELeave) CDrawTwelveBppScreenBitmapColor; + drawDevice=drawDeviceX; + CleanupStack::PushL(drawDevice) ; + User::LeaveIfError(drawDeviceX->ConstructScreen( + aScreenNo, + aScreenInfo.iAddress, + aScreenInfo.iSize,matchedMode)); + } + break; + + case EColor64K: // 16 Bpp color mode + { + CDrawSixteenBppScreenBitmap* drawDeviceX = new (ELeave) CDrawSixteenBppScreenBitmap; + drawDevice=drawDeviceX; + CleanupStack::PushL(drawDevice) ; + User::LeaveIfError(drawDeviceX->ConstructScreen( + aScreenNo, + aScreenInfo.iAddress, + aScreenInfo.iSize,matchedMode)); + } + break; + case EColor16MU: + { + CDrawUTwentyFourBppScreenBitmap* drawDeviceX = new (ELeave) CDrawUTwentyFourBppScreenBitmap; + drawDevice=drawDeviceX; + CleanupStack::PushL(drawDevice) ; + User::LeaveIfError(drawDeviceX->ConstructScreen( + aScreenNo, + aScreenInfo.iAddress, + aScreenInfo.iSize,matchedMode)); + } + break; + case EColor16MA: + { + CDrawThirtyTwoBppScreenBitmapAlpha* drawDeviceX = new (ELeave) CDrawThirtyTwoBppScreenBitmapAlpha; + drawDevice=drawDeviceX; + CleanupStack::PushL(drawDevice) ; + User::LeaveIfError(drawDeviceX->ConstructScreen( + aScreenNo, + aScreenInfo.iAddress, + aScreenInfo.iSize,matchedMode)); + } + break; + case EColor16MAP: + { + CDrawThirtyTwoBppScreenBitmapAlphaPM* drawDeviceX = new (ELeave) CDrawThirtyTwoBppScreenBitmapAlphaPM; + drawDevice=drawDeviceX; + CleanupStack::PushL(drawDevice) ; + User::LeaveIfError(drawDeviceX->ConstructScreen( + aScreenNo, + aScreenInfo.iAddress, + aScreenInfo.iSize,matchedMode)); + } + break; + default: + User::Leave(KErrNotSupported); + } + + CleanupStack::Pop(drawDevice); + return drawDevice; + } + + +/********************************************************************/ +/* Implementation of CFbsDrawDevice class */ +/********************************************************************/ + +/** +This function calls the correct constructor in function of the display mode. +@param aInfo, Structure of the LCD info +@param aDispMode, display mode +@return A pointer to just created screen device, which implements CFbsDrawDevice interface +@deprecated Use CFbsDrawDevice::NewScreenDeviceL(TInt aScreenNo, TDisplayMode aDispMode) +*/ +EXPORT_C CFbsDrawDevice* CFbsDrawDevice::NewScreenDeviceL(TScreenInfoV01 aInfo, TDisplayMode aDispMode) + { + __ASSERT_ALWAYS(aInfo.iScreenAddressValid, Panic(EScreenDriverPanicInvalidWindowHandle)); + TScreenInfo screenInfo(aInfo.iScreenAddress, aInfo.iScreenSize); + return ::CreateInstanceL(KDefaultScreenNo, aDispMode, screenInfo); + } + + + +/** +Creates a new screen device instance, which implements CFbsDrawDevice interface. +The method has to be implemented for each type of supported video hardware. +@param aScreenNo Screen number +@param aDispMode Requested display mode +@return A pointer to just created screen device, which implements CFbsDrawDevice interface +@leave KErrNoMemory Not enough memory + KErrNotSupported The requested screen device type is not supported +*/ +EXPORT_C CFbsDrawDevice* CFbsDrawDevice::NewScreenDeviceL(TInt aScreenNo, + TDisplayMode aDispMode) + { + TInt width = 0, height = 0; + User::LeaveIfError(HAL::Get(aScreenNo, HALData::EDisplayXPixels, width)); + User::LeaveIfError(HAL::Get(aScreenNo, HALData::EDisplayYPixels, height)); + __ASSERT_ALWAYS(width > 0 && height > 0, Panic(EScreenDriverPanicInvalidHalValue)); + + TUint8* address = 0; + + TScreenInfo screenInfo(address, TSize(width, height)); + return ::CreateInstanceL(aScreenNo, aDispMode, screenInfo); + } + +/** + Depending on the current graphics hardware this + will return one of the 16M video modes defined in + TDisplayMode, or ENone if a 16M video mode is not supported. + The method has to be implemented on all hardware platforms. + @return a 16M display mode or ENone. + ENone - it means that current hardware doesn't have 16M color mode. +*/ +EXPORT_C TDisplayMode CFbsDrawDevice::DisplayMode16M() + { + return EColor16MAP; + } + + +/** +Complete construction of the helper object. +@param aScreenNo The screen number, starting from 0. +@param aPixelFormat Pixel format UID or 0 for default based on bpp +@return KErrNone or a system wide error value. +*/ +TInt CScreenDeviceHelper::Construct(TInt aScreenNo, TUidPixelFormat aPixelFormat, TUint aHalMode) + { + iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::EScreenField] = aScreenNo; // Screen number + iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::EHalField] = aHalMode; // Rotation and hal mode index + iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::ETypeGuidField] = aPixelFormat; //May be zero for non-GCE modes + iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::ETypeClassField] + = ((TUint32)(TSurfaceId::EScreenSurface) << TSurfaceId::TScreenSurfaceUsage::ETypeClassShift); // Type + iAssignedOrientation = EDeviceOrientationNormal; // Actual rotation is held seperately from surface ID + + TInt val = 0; + iHasChunk = EFalse; + TInt ret = HAL::Get(aScreenNo,HALData::EDisplayMemoryHandle,val); + if (ret == KErrNone) + { + __ASSERT_DEBUG(val != 0, Panic(EScreenDriverPanicInvalidHalValue)); + RChunk chunk; + ret = chunk.SetReturnedHandle(val); + if (ret != KErrNone) + { + return ret; + } + iChunk = chunk; + ret = iChunk.Duplicate(RThread(), EOwnerProcess); + // Close before checking for errors, as we don't want to leave the + // temporary chunk handle floating about. + chunk.Close(); + if (ret != KErrNone) + { + return ret; + } + iHasChunk = ETrue; + } + // KErrNotSupported is returned if we can't get the Handle because it's not a driver + // that supports the concept. We don't return that error, since it's perfectly valid + // to not support this. + else if (ret != KErrNotSupported) + { + return ret; + } + return iSurfaceUpdateSession.Connect(); + } + +CScreenDeviceHelper::~CScreenDeviceHelper() + { + + iSurfaceUpdateSession.Close(); + iChunk.Close(); + } + +void CScreenDeviceHelper::NotifyWhenAvailable(TRequestStatus& aStatus) + { + iSurfaceUpdateSession.NotifyWhenAvailable(aStatus); + } + +/** +Implementation of corresponding function in CDrawDevice, utilizing a tracked +update region. Updates the screen from the surface, if the update region is +not empty. +*/ +void CScreenDeviceHelper::Update() + { + if (iUpdateRegion.IsEmpty()) + return; + + iSurfaceUpdateSession.SubmitUpdate(ScreenNumber(), iSurface, 0, &iUpdateRegion); + iUpdateRegion.Clear(); + } + +/** +Implementation of corresponding function in CDrawDevice, utilizing a tracked +update region. Adds the given region to the update region and updates the +screen. +@param aRegion Additional region to be updated. +*/ +void CScreenDeviceHelper::Update(const TRegion& aRegion) + { + if(!aRegion.IsEmpty() && !aRegion.CheckError()) + { + TInt rcCnt = aRegion.Count(); + for (TInt ii=0; ii < rcCnt; ++ii) + { + UpdateRegion(aRegion[ii]); + } + } + Update(); + } + +/** +Implementation of corresponding function in CDrawDevice, utilizing a tracked +update region. Adds the given rectangle to the update region. +@param aRect Rectangle to be added to the update region. +*/ +void CScreenDeviceHelper::UpdateRegion(const TRect& aRect) + { + if (aRect.IsEmpty()) + { + // Adding an empty rectangle should have no effect. + return; + } + + if (iUpdateRegion.CheckError()) + { + // Try to ensure the region doesn't keep an error forever. + iUpdateRegion.Clear(); + } + + TRect bounds(iUpdateRegion.BoundingRect()); + iUpdateRegion.AddRect(aRect); + + // If the region fills up, start again with the old bounding box plus this + // rectangle. + if (iUpdateRegion.CheckError()) + { + iUpdateRegion.Clear(); + iUpdateRegion.AddRect(bounds); + iUpdateRegion.AddRect(aRect); + } + } + +/** +Reset the update region to be empty without submitting any outstanding updates. +*/ +void CScreenDeviceHelper::ResetUpdateRegion() + { + iUpdateRegion.Clear(); + } + +/** +This function returns the current surface in use for this screen. +@param aSurface The identifier to be updated with the current screen surface. +*/ +void CScreenDeviceHelper::GetSurface(TSurfaceId& aSid) const + { + aSid = iSurface; + } + +/** +This function is used to request the device orientations supported by the +screen device. +@return A bitwise combination of one or more TDeviceOrientation enumerated +values indicating the device orientations that are supported by this device. +*/ +TUint CScreenDeviceHelper::DeviceOrientationsAvailable(const TSize& aScreenSize) const + { + //All that can be reported here is what the CScreenDevice can support via HAL + //With generic driver, the runtime can be further restricted by the GCE + if ( aScreenSize.iWidth && aScreenSize.iWidth==aScreenSize.iHeight ) + { + return EDeviceOrientationNormal | EDeviceOrientation90CW | + EDeviceOrientation180 | EDeviceOrientation270CW; + } + //Query base HAL for rotated view support + TInt offset1=iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::EHalField]|TSurfaceId::TScreenSurfaceUsage::EHalFlippedFlag; + if ( HAL::Get(ScreenNumber(), HALData::EDisplayOffsetBetweenLines, offset1)==KErrNone + && offset1!=0) + { + return EDeviceOrientationNormal | EDeviceOrientation90CW | + EDeviceOrientation180 | EDeviceOrientation270CW; + } + else + return EDeviceOrientationNormal | EDeviceOrientation180; + } + +/** +This function selects the surface and device buffer to use in the screen +driver for this screen. Normal and 180° rotations will generally use the same +surface, while 90° and 270° will use another. The surfaces may have different +width, height, stride and surface ID, so functions that make use of any of +these may be affected after a change in surface orientation, and the return +value should be checked for this reason. + +This call does not change the way rendering is performed, but may operate on +the underlying memory using a new shape. The call does not change the display +controller's settings, as this is handled via the GCE. All this changes are the +internal attributes of the screen device and driver objects. A CFbsBitGc object +activated on the device should be reactivated, to update its own attributes, or +drawing may be corrupted. + +Note: while TDeviceOrientation values do not directly correspond to +CFbsBitGc::TGraphicsOrientation values, and cannot be used interchangeably, it +is simple to generate the former from the latter using the left-shift operator +(i.e. device == (1 << graphics)). In particular a device orientation of +90 degrees clockwise is equivalent to a content orientation of 90 degrees anti- +clockwise, which is what TGraphicsOrientation refers to for the equivalent +setting. The letters "CW" in the TDeviceOrientation enumeration refer +to a clockwise device rotation, so EDeviceOrientation90CW is a 90 degree +clockwise rotation of the device. + +@param aOrientation The new device orientation, relative to the normal physical +screen orientation. +@param aNewSize The new pixel dimensions of the surface to be used. +@return ETrue is returned if any of the surface, width, height or stride +attributes of the screen device have changed as a result of the call or EFalse +if none of the attributes have changed. +*/ +TBool CScreenDeviceHelper::SetDeviceOrientation(TDeviceOrientation aOrientation, TSize& aNewSize) + { + // Check only one orientation bit is set + if (((TInt)aOrientation - 1) & aOrientation) + { + Panic(EScreenDriverPanicInvalidParameter); + } + + // Check the orientation is supported + if ((DeviceOrientationsAvailable(aNewSize) & aOrientation) == 0) + { + Panic(EScreenDriverPanicInvalidParameter); + } + + iAssignedOrientation=aOrientation; + + return SetDeviceFlipMode(ConvertFlip(aOrientation),aNewSize); + } +/** Sets or clears the flipped flag indicating that the width and height have been swapped for a +/-90 deg rotation + * Rotation is not required for square displays unless the Hal wants one. + **/ +TBool CScreenDeviceHelper::SetDeviceFlipMode(TBool aFlip, TSize& aNewSize) + { + //This is now a private method that doesn't validate aFlip + TInt newFlipMode= iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::EHalField]; + if (aFlip) + { + newFlipMode|=TSurfaceId::TScreenSurfaceUsage::EHalFlippedFlag; + } + else + { + newFlipMode&=~TSurfaceId::TScreenSurfaceUsage::EHalFlippedFlag; + } + if (newFlipMode == iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::EHalField]) + { + // No change to mode requested. + return EFalse; + } + TInt err=0; + err|=HAL::Get(ScreenNumber(), HALData::EDisplayXPixels, aNewSize.iWidth); + err|=HAL::Get(ScreenNumber(), HALData::EDisplayYPixels, aNewSize.iHeight); + __ASSERT_ALWAYS(err==KErrNone,Panic(EScreenDriverPanicInvalidHalValue)); + if (aNewSize.iWidth==aNewSize.iHeight) + { //Attempt optimisation to not flip if the screen is square, so avoid recomposition. + TInt stride1=iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::EHalField]; + TInt stride2=stride1^TSurfaceId::TScreenSurfaceUsage::EHalFlippedFlag; + TInt offset1=stride1; + TInt offset2=stride2; + //Does the rotated mode have any other attributes that differ? + //It is just about possible to imagine that the rotated display + //wants to use a different setting for the flipped legacy buffer for optimisation purposes. + err|=HAL::Get(ScreenNumber(), HALData::EDisplayOffsetToFirstPixel, offset1); + err|=HAL::Get(ScreenNumber(), HALData::EDisplayOffsetBetweenLines, stride1); + //The existing mode settings should not fail... we are already in this mode! + __ASSERT_ALWAYS(err==KErrNone,Panic(EScreenDriverPanicInvalidHalValue)); + + TInt rotatedErr = HAL::Get(ScreenNumber(), HALData::EDisplayOffsetToFirstPixel, offset2); + rotatedErr |= HAL::Get(ScreenNumber(), HALData::EDisplayOffsetBetweenLines, stride2); + //The HAL may indicate rotation is not required by failing to return data or returning the same data + if ( rotatedErr!=KErrNone || stride2==0 ) //Offset can legitimately be zero. + { + // No change to mode supported. + return EFalse; + } + if ( stride1==stride2 && offset1==offset2 ) + { + // No change to mode needed. + return EFalse; + } + } + + iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::EHalField] = newFlipMode; + if (aFlip) + { + // Swap width and height in the alternate orientation. + aNewSize.SetSize(aNewSize.iHeight, aNewSize.iWidth); + } + return ETrue; + } +/** Returns the stride for the given mode. + * This method must not panic if it should fail! + **/ +TUint CScreenDeviceHelper::BytesPerScanline() const + { + TInt linepitchInBytes = iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::EHalField]; + TInt ret = HAL::Get(ScreenNumber(),HALData::EDisplayOffsetBetweenLines,linepitchInBytes); + if (ret!=KErrNone) + { + return 0; + } + return linepitchInBytes ; + } +/** Returns the address for the image data + * This method must not panic if it should fail! + **/ +void* CScreenDeviceHelper::AddressFirstPixel() const + { + TInt bufferStartAddress = iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::EHalField]; + TInt ret = KErrNone; + if (iHasChunk) + { + // The "chunk" way to do this is to get the handle of the chunk, and then the base address of the + // chunk itself. + bufferStartAddress = (TInt)iChunk.Base(); + } + else + { + // Chunk not supported, use older HAL call to get the buffer address. + ret = HAL::Get(ScreenNumber(),HALData::EDisplayMemoryAddress,bufferStartAddress); + if (ret!=KErrNone) + { + return 0; + } + } + TInt bufferOffsetFirstPixel = iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::EHalField]; + ret = HAL::Get(ScreenNumber(),HALData::EDisplayOffsetToFirstPixel,bufferOffsetFirstPixel); + if (ret!=KErrNone) + { + return 0; + } + return (void*)(bufferStartAddress+bufferOffsetFirstPixel); + } + +/** +Returns the current device width/height flip state of this surface, representing a +/-90 deg rotation. +**/ +TBool CScreenDeviceHelper::DeviceFlipped() const + { + return (iSurface.iInternal[TSurfaceId::TScreenSurfaceUsage::EHalField] & TSurfaceId::TScreenSurfaceUsage::EHalFlippedFlag) != 0; //!=0 forces true --> 1 + } + + +/** +Returns the current device orientation. +*/ +TDeviceOrientation CScreenDeviceHelper::DeviceOrientation() const + { + return iAssignedOrientation; + } +/** Returns an accurate scaling factor between twips and pixels in width. + + **/ +TInt CScreenDeviceHelper::HorzTwipsPerThousandPixels(const TSize& aPixels)const + { + __ASSERT_DEBUG(aPixels.iWidth, Panic(EScreenDriverPanicInvalidSize)); + + TInt width = 0; + TInt r = HAL::Get(ScreenNumber(), SecondIfFlipped(HAL::EDisplayXTwips,HAL::EDisplayYTwips), width); + __ASSERT_DEBUG(r==KErrNone && width!=0, Panic(EScreenDriverPanicInvalidHalValue)); + + return (width * 1000) / aPixels.iWidth; + } +/** Returns an accurate scaling factor between twips and pixels in height. + **/ +TInt CScreenDeviceHelper::VertTwipsPerThousandPixels(const TSize& aPixels)const + { + __ASSERT_DEBUG(aPixels.iHeight, Panic(EScreenDriverPanicInvalidSize)); + + TInt height = 0; + TInt r = HAL::Get(ScreenNumber(), SecondIfFlipped(HAL::EDisplayYTwips,HAL::EDisplayXTwips), height); + __ASSERT_DEBUG(r==KErrNone && height!=0, Panic(EScreenDriverPanicInvalidHalValue)); + + return (height * 1000) / aPixels.iHeight; + } + +