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os/graphics/windowing/windowserverplugins/openwfc/src/rendertarget.cpp
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution. 
     1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include "rendertarget.h"

    17 #include <graphics/directgdidriver.h>

    18 #include <graphics/sgutils.h>

    19 #include "panic.h"

    20 #include <bitdraworigin.h>

    21 #include <bitdrawinterfaceid.h>

    22 #include "utils.h"

    23 #if defined(__WINS__) && defined(_DEBUG)

    24 #include "osbwin.h"

    25 #endif

    26 

    27 RWsOffScreenImageTarget::RWsOffScreenImageTarget()

    28 	{

    29 	}

    30 

    31 void RWsOffScreenImageTarget::OpenL(TUint32 aUsage, TSgCpuAccess aCpuAccess, TUidPixelFormat aPixelFormat, const TSize& aSize, TInt aScreenNumber)

    32 	{

    33 	CDirectGdiDriver* theDGdiDriver = CDirectGdiDriver::Static();

    34 	if(!theDGdiDriver)

    35 		{

    36 		User::Leave(KErrNotReady);

    37 		}

    38 	iImageInfos[CRenderTarget::ENormalAspectRatio].iUsage = aUsage;

    39 	iImageInfos[CRenderTarget::ENormalAspectRatio].iPixelFormat = aPixelFormat;

    40 	iImageInfos[CRenderTarget::ENormalAspectRatio].iSizeInPixels = aSize;

    41 	iImageInfos[CRenderTarget::ENormalAspectRatio].iCpuAccess = aCpuAccess;

    42 	iImageInfos[CRenderTarget::ENormalAspectRatio].iScreenId = aScreenNumber;

    43 	

    44 	iImageInfos[CRenderTarget::EInvertedAspectRatio] = iImageInfos[CRenderTarget::ENormalAspectRatio];

    45 	iImageInfos[CRenderTarget::EInvertedAspectRatio].iSizeInPixels.SetSize(aSize.iHeight, aSize.iWidth);

    46 

    47 	const TInt KImageCount = 1;

    48 	User::LeaveIfError(RSgImageCollection::Create(iImageInfos, KImageCount, iImageCollections, CRenderTarget::EAspectRatioCount));

    49 	

    50 	for(TInt ii = 0; ii < CRenderTarget::EAspectRatioCount; ii++)

    51 		{

    52 		User::LeaveIfError(iImageCollections[ii].GetInfo(iImageInfos[ii])); //should be the same as requested, this is just belt and braces

    53 		User::LeaveIfError(iImageCollections[ii].OpenImage(0, iImages[ii]));

    54 		iImageTargets[ii] = RDirectGdiImageTarget(*theDGdiDriver);

    55 		User::LeaveIfError(iImageTargets[ii].Create(iImages[ii]));

    56 		}

    57 	}

    58 

    59 void RWsOffScreenImageTarget::Close()

    60 	{

    61 	for(TInt ii = 0; ii < CRenderTarget::EAspectRatioCount; ii++)

    62 		{

    63 		iImageTargets[ii].Close();

    64 		iImages[ii].Close();

    65 		iImageCollections[ii].Close();

    66 		}

    67 	}

    68 

    69 /**

    70  Create and construct render target. The function creates RSgImage and target associated with it.

    71  DirectGc wrapper will also be created at this stage. 

    72  */ 

    73 CRenderTarget* CRenderTarget::NewL(MWsIniFile* aIniFile, TUint32 aUsage, TSgCpuAccess aCpuAccess, TDisplayMode aDisplayMode, const TSize& aSize, TInt aScreenNumber)

    74 	{

    75 	CRenderTarget* self=new(ELeave) CRenderTarget();

    76 	CleanupStack::PushL(self);

    77 	self->ConstructL(aIniFile, aUsage, aCpuAccess, aDisplayMode, aSize, aScreenNumber);

    78 	CleanupStack::Pop(self);

    79 	return self;

    80 	}

    81 

    82 inline CRenderTarget::CRenderTarget()

    83 	: iCurrentAspectRatio(ENormalAspectRatio)

    84 	{}

    85 

    86 CRenderTarget::~CRenderTarget()

    87 	{

    88 	delete iDirectGdiGcWrapper;

    89 	iTarget.Close();

    90 #if defined(__WINS__) && defined(_DEBUG)

    91 	delete iOsbWin;

    92 #endif	

    93 	}

    94 

    95 /**

    96  Construct render target. The function creates RSgImage and target associated with it.

    97  DirectGc wrapper will also be created at this stage. 

    98  */ 

    99 #if defined(__WINS__) && defined(_DEBUG)

   100 void CRenderTarget::ConstructL(MWsIniFile* aIniFile, TUint32 aUsage, TSgCpuAccess aCpuAccess, TDisplayMode aDisplayMode, const TSize& aSize, TInt aScreenNumber)

   101 #else

   102 void CRenderTarget::ConstructL(MWsIniFile* /*aIniFile*/, TUint32 aUsage, TSgCpuAccess aCpuAccess, TDisplayMode aDisplayMode, const TSize& aSize, TInt aScreenNumber)

   103 #endif

   104 	{

   105 	CDirectGdiDriver* theDGdiDriver = CDirectGdiDriver::Static();

   106 	if(!theDGdiDriver)

   107 		{

   108 		User::Leave(KErrNotReady);

   109 		}

   110 	iTarget.OpenL(aUsage, aCpuAccess, SgUtils::DisplayModeToPixelFormat(aDisplayMode), aSize, aScreenNumber);

   111 	iDirectGdiGcWrapper = CDirectGdiGcWrapper::NewL();

   112 	User::LeaveIfError(iDirectGdiGcWrapper->DirectGdiGc().Activate(iTarget.iImageTargets[iCurrentAspectRatio]));

   113 

   114 #if defined(__WINS__) && defined(_DEBUG)

   115 	_LIT(KDebugOsb, "DEBUGOSB");

   116 	if(aIniFile->FindVar(aScreenNumber, KDebugOsb))

   117 		{

   118 		_LIT(KDebugOsbTitleFormatBackBuffer, "Screen %d, back buffer   ");

   119 		_LIT(KDebugOsbTitleFormatScreen,     "Screen %d, display buffer");

   120 		TBuf<32> title;

   121 		title.Format(((aUsage & ESgUsageScreenSource) ? KDebugOsbTitleFormatScreen : KDebugOsbTitleFormatBackBuffer), aScreenNumber);

   122 		iOsbWin = CDebugOsbWin::NewL(title, aSize);

   123 		}

   124 #endif

   125 	}

   126 

   127 TAny* CRenderTarget::ResolveObjectInterface(TUint aTypeId)

   128 	{

   129 	switch(aTypeId)

   130 		{

   131 	case MWsUiBuffer::EWsObjectInterfaceId:

   132 		return static_cast<MWsUiBuffer*>(this);

   133 		}

   134 	return DirectGdiGc()->ResolveObjectInterface(aTypeId);

   135 	}

   136 

   137 TInt CRenderTarget::MapReadWrite(TAny*& aDataAddress, TInt& aDataStride)

   138 	{

   139 	CDirectGdiDriver* driver = CDirectGdiDriver::Static();

   140 	if(driver)

   141 		driver->Finish();

   142 	return Image().MapReadWrite(aDataAddress, aDataStride);

   143 	}

   144 

   145 TInt CRenderTarget::MapWriteOnly(TAny*& aDataAddress, TInt& aDataStride)

   146 	{

   147 	CDirectGdiDriver* driver = CDirectGdiDriver::Static();

   148 	if(driver)

   149 		driver->Finish();

   150 	return Image().MapWriteOnly(aDataAddress, aDataStride);

   151 	}

   152 

   153 TInt CRenderTarget::MapReadOnly(const TAny*& aDataAddress, TInt& aDataStride) const

   154 	{

   155 	CDirectGdiDriver* driver = CDirectGdiDriver::Static();

   156 	if(driver)

   157 		driver->Finish();

   158 	return Image().MapReadOnly(aDataAddress, aDataStride);

   159 	}

   160 

   161 TInt CRenderTarget::Unmap()

   162 	{

   163 	return Image().Unmap();

   164 	}

   165 

   166 TInt CRenderTarget::Unmap() const

   167 	{

   168 	return Image().Unmap();

   169 	}

   170 

   171 TUidPixelFormat CRenderTarget::PixelFormat() const

   172 	{

   173 	return ImageInfo().iPixelFormat;

   174 	}

   175 

   176 TSize CRenderTarget::SizeInPixels() const

   177 	{

   178 	return ImageInfo().iSizeInPixels;

   179 	}

   180 

   181 TDisplayMode CRenderTarget::DisplayMode() const

   182 	{

   183 	return SgUtils::PixelFormatToDisplayMode(PixelFormat());

   184 	}

   185 

   186 const TSurfaceId& CRenderTarget::SurfaceId() const

   187 	{

   188 	return ImageCollection().SurfaceId();

   189 	}

   190 

   191 const TSgDrawableId& CRenderTarget::ImageId(TAspectRatio aAspectRatio) const

   192 	{

   193 	return iTarget.iImages[aAspectRatio].Id();

   194 	}

   195 

   196 void CRenderTarget::SetAspectRatio(TAspectRatio aAspectRatio)

   197 	{

   198 	STD_ASSERT_DEBUG(aAspectRatio == ENormalAspectRatio || aAspectRatio == EInvertedAspectRatio, EPluginPanicTemp);

   199 	if(aAspectRatio != iCurrentAspectRatio)

   200 		{

   201 		iCurrentAspectRatio = aAspectRatio;

   202 		iDirectGdiGcWrapper->Reset();

   203 		}

   204 	iDirectGdiGcWrapper->DirectGdiGc().Activate(iTarget.iImageTargets[iCurrentAspectRatio]);

   205 	}

   206 

   207 TInt CRenderTarget::SetDrawDeviceOffset(TPoint& aOrigin)

   208 	{

   209 	//set the offset on both wrappers

   210 	MDrawDeviceOrigin* originInterface=NULL;

   211 	TInt result=	 iDirectGdiGcWrapper->DirectGdiGc().GetInterface(TUid::Uid(KDrawDeviceOriginInterfaceID),reinterpret_cast<TAny*&>(originInterface));

   212 	if (result>=KErrNone && originInterface!=NULL)

   213 		{

   214 		result=originInterface->Set(aOrigin);

   215 		}

   216 

   217 	if (result>=KErrNone)

   218 		{

   219 		iOffset=aOrigin;

   220 		iDirectGdiGcWrapper->DirectGdiGc().Activate(iTarget.iImageTargets[iCurrentAspectRatio]);

   221 		}

   222 	return result;

   223 	}

   224 

   225 TInt CRenderTarget::AllocNewTarget(RWsOffScreenImageTarget& aNewTarget, const TSize& aNewSize)

   226 	{

   227 	TRAPD(err,

   228 		aNewTarget.OpenL(

   229 				iTarget.iImageInfos[CRenderTarget::ENormalAspectRatio].iUsage,

   230 				iTarget.iImageInfos[CRenderTarget::ENormalAspectRatio].iCpuAccess,

   231 				iTarget.iImageInfos[CRenderTarget::ENormalAspectRatio].iPixelFormat,

   232 				aNewSize,

   233 				iTarget.iImageInfos[CRenderTarget::ENormalAspectRatio].iScreenId))

   234 	return err;

   235 	}

   236 

   237 void CRenderTarget::SwitchTarget(RWsOffScreenImageTarget& aNewTarget)

   238 	{

   239 	iTarget.Close();

   240 	iTarget = aNewTarget;

   241 	iDirectGdiGcWrapper->DirectGdiGc().Activate(iTarget.iImageTargets[iCurrentAspectRatio]);

   242 	}

   243 

   244 void CRenderTarget::GetPixel(TRgb& aColor, const TPoint& aPixel) const

   245 	{

   246 	const TAny* dataAddress = NULL; 

   247 	TInt dataStride;

   248 	const TInt err = MapReadOnly(dataAddress, dataStride);

   249 	if(!err)

   250 		{

   251 		const TUidPixelFormat pixelFormat = PixelFormat();

   252 		const TInt bpp = SgUtils::MinDataStride(1, pixelFormat);

   253 		const TUint32 offset = aPixel.iY * dataStride / bpp + aPixel.iX; 

   254 		switch(pixelFormat)

   255 			{

   256 		case EUidPixelFormatARGB_8888_PRE:

   257 		case EUidPixelFormatARGB_8888:

   258 			{

   259 			const TInt32* dataAddress1 = static_cast<const TInt32*>(dataAddress) + offset; 

   260 			const TInt32 colValue = *dataAddress1;

   261 			aColor.SetInternal(colValue);

   262 			}

   263 			break;

   264 		case EUidPixelFormatRGB_565:

   265 			{

   266 			const TInt16* dataAddress1 = static_cast<const TInt16*>(dataAddress) + offset;

   267 			const TInt16 colValue = *dataAddress1;

   268 			aColor = TRgb::Color64K((TInt)colValue);

   269 			}

   270 			break;

   271 			}

   272 		Unmap();

   273 		}

   274 	}

   275 

   276 void CRenderTarget::GetScanLine(TDes8& aScanLine, const TPoint& aStartPixel, TInt aPixelLength, TDisplayMode aDispMode) const

   277 	{

   278 	TRect rectSrc(aStartPixel, TSize(aPixelLength, 1)); 

   279 	const TRect  rectClientArea(SizeInPixels()); 

   280 	rectSrc.Intersection(rectClientArea);

   281 	if(rectSrc.IsEmpty())

   282 		return;

   283 	const TUidPixelFormat pixelFormatSource = PixelFormat();

   284 	const TUidPixelFormat pixelFormatDest = SgUtils::DisplayModeToPixelFormat(aDispMode);

   285 	if((pixelFormatSource == EUidPixelFormatUnknown) || (pixelFormatDest == EUidPixelFormatUnknown))

   286 		return;

   287 	

   288 	aPixelLength = rectSrc.Width();

   289 	const TInt dataStrideDest = SgUtils::MinDataStride(aPixelLength, pixelFormatDest);

   290 	if(dataStrideDest <= 0)

   291 		return;

   292 	const TAny* dataAddressSource = NULL; 

   293 	TInt dataStrideSource;

   294 	const TInt err = MapReadOnly(dataAddressSource, dataStrideSource);

   295 	if(!err)

   296 		{

   297 		aScanLine.SetLength(dataStrideDest);

   298 		SgUtils::TransferPixels(const_cast<TUint8*>(aScanLine.Ptr()), dataStrideDest, pixelFormatDest, 

   299 				dataAddressSource, dataStrideSource, pixelFormatSource, rectSrc);

   300 		Unmap();

   301 		}

   302 	}

   303 

   304 TBool CRenderTarget::RectCompare(const TRect& aRect1, const TRect& aRect2) const

   305 	{

   306 	const TAny* startDataAddress = NULL; 

   307 	TInt dataStride;

   308 	

   309 	const TRect clientRect(SizeInPixels());

   310 	TRect rect1 = aRect1;

   311 	TRect rect2 = aRect2;

   312 	

   313 	rect1.Intersection(clientRect);

   314 	rect2.Intersection(clientRect);

   315 	if(rect1.IsEmpty() || rect2.IsEmpty() || (rect1 != aRect1) || (rect2 != aRect2) ||

   316 			(rect1.Width() != rect2.Width()) ||	(rect1.Height() != rect2.Height()))

   317 		return EFalse;

   318 

   319 	TUidPixelFormat pixelFormat = PixelFormat();

   320 	if(pixelFormat == EUidPixelFormatUnknown)

   321 		return EFalse;

   322 		

   323 	TInt bpp = SgUtils::MinDataStride(1, pixelFormat);

   324 	if(bpp == 0)

   325 		return EFalse;

   326 	

   327 	TInt err = MapReadOnly(startDataAddress, dataStride);

   328 	if(err != KErrNone)

   329 		return EFalse;

   330 	TBool res = ETrue;

   331 	TPoint startPoint1 = rect1.iTl;

   332 	TPoint startPoint2 = rect2.iTl;

   333 	const TInt length1 = SgUtils::MinDataStride(rect1.Width(), pixelFormat);

   334 	const TInt length2 = SgUtils::MinDataStride(rect2.Width(), pixelFormat);

   335 		

   336 	for(; (startPoint1.iY < rect1.iBr.iY) && (startPoint2.iY < rect2.iBr.iY); startPoint1.iY++, startPoint2.iY++)

   337 		{

   338 		const TUint8* dataAddress1 = DataAddress(startDataAddress, startPoint1, dataStride, bpp); 

   339 		const TUint8* dataAddress2 = DataAddress(startDataAddress, startPoint2, dataStride, bpp); 

   340 		

   341 		if(Mem::Compare(dataAddress1, length1, dataAddress2, length2) != 0)

   342 			{

   343 			res = EFalse; 

   344 			break;

   345 			}

   346 		}

   347 	Unmap();

   348 	

   349 	return res;

   350 	}

   351 

   352 void CRenderTarget::CopyToBitmapL(CFbsBitmap* aBitmap, const TRect& aRect) const

   353 	{

   354 	const TUidPixelFormat pixelFormatDest = SgUtils::DisplayModeToPixelFormat(aBitmap->DisplayMode());

   355 	const TUidPixelFormat pixelFormatSrc = PixelFormat();

   356 	if((pixelFormatSrc == EUidPixelFormatUnknown) || (pixelFormatDest == EUidPixelFormatUnknown))

   357 		User::LeaveIfError(KErrNotSupported);

   358 	

   359 	aBitmap->BeginDataAccess();

   360 	const TSize sizeDest = aBitmap->SizeInPixels();

   361 	TRect rectSrc = aRect;

   362 	rectSrc.Intersection(TRect(SizeInPixels()));

   363 	if(rectSrc.IsEmpty())

   364 		return;

   365 	if(rectSrc.Height() > sizeDest.iHeight)

   366 		{

   367 		rectSrc.SetHeight(sizeDest.iHeight);

   368 		}

   369 	if(rectSrc.Width() > sizeDest.iWidth)

   370 		{

   371 		rectSrc.SetWidth(sizeDest.iWidth);

   372 		}

   373 

   374 	const TAny* dataAddressSrc = NULL; 

   375 	TInt dataStrideSrc;

   376 	User::LeaveIfError(MapReadOnly(dataAddressSrc, dataStrideSrc));

   377 

   378 	SgUtils::TransferPixels(aBitmap->DataAddress(), aBitmap->DataStride(), pixelFormatDest,  

   379 			dataAddressSrc, dataStrideSrc, pixelFormatSrc, rectSrc);

   380 

   381 	aBitmap->EndDataAccess();

   382 	Unmap();

   383 	}

   384 

   385 /*

   386  Helper function to obtain the address of the buffer   

   387  */

   388 const TUint8* CRenderTarget::DataAddress(const TAny* aStartDataAddress, const TPoint& aStartPoint, TInt aDataStride, TInt aBpp) const

   389 	{

   390 	const TInt offset = aStartPoint.iX * aBpp + aStartPoint.iY * aDataStride;  

   391 	const TUint8* dataAddress = static_cast<TUint8*>(const_cast<TAny*> (aStartDataAddress)); 

   392 

   393 	return(dataAddress + offset);

   394 	}

   395 

   396 #if defined(__WINS__) && defined(_DEBUG)

   397 void CRenderTarget::UpdateDebugWin()

   398 	{

   399 	if (iOsbWin)

   400 		{

   401 		const TAny* dataAddress = NULL; 

   402 		TInt dataStride;

   403 		const TInt err = MapReadOnly(dataAddress, dataStride);

   404 		if(!err)

   405 			{

   406 			const TUint32* dataAddress1 = static_cast<const TUint32*>(dataAddress); 

   407 			iOsbWin->Refresh(SizeInPixels(), DisplayMode(), dataAddress1);

   408 			Unmap();

   409 			}

   410 		}

   411 	}

   412 #endif
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