Symaptic: os/graphics/graphicsdeviceinterface/screendriver/swins/AccelBitmap.cpp@bde4ae8d615e

     1 // Copyright (c) 2001-2009 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 //

    16 #include "GraphicsAccelerator.h"

    18 // Windows headers...

    19 #define UNICODE

    20 #pragma warning( disable : 4201 )

    21 #define WIN32_LEAN_AND_MEAN

    22 #define NOSERVICE

    23 #include <windows.h>

    24 #include <windowsx.h>

    25 #pragma warning( default : 4201 )

    27 #include <bitdraw.h>

    28 #include "_WININC.H"

    30 /** Fills a structure with data which describes the basic details of this bitmap.

    32 @param aInfo Bitmap information structure to fill with the details of this bitmap.

    33 @return KErrNone if successful, KErrBadHandle if a value has not been assigned to iHandle. */

    34 EXPORT_C TInt RHardwareBitmap::GetInfo(TAcceleratedBitmapInfo& aInfo) const

    35 	{

    36 	if(!iHandle)

    37 		return(KErrBadHandle);

    39 	// -1 or less refers to the screen. It is the (screen number + 1) actually with "-" sign.

    40 	if(iHandle <= -1)

    41 		{

    42         RWindows* window = ::WindowHandler(-iHandle - 1);

    43 		aInfo.iDisplayMode = window->iDisplayMode;

    44 		aInfo.iAddress = (TUint8*)(window->EpocBitmapBits());

    45 		aInfo.iSize = window->iEpocBitmapSize;

    46 		aInfo.iLinePitch = window->iEpocBitmapLinePitch;

    47 		aInfo.iPhysicalAddress = 0;

    48 		switch(aInfo.iDisplayMode)

    49 			{

    50 			case ENone:

    51 				aInfo.iPixelShift = -1;

    52 				break;

    53 			case EGray2:

    54 				aInfo.iPixelShift = 0;

    55 				break;

    56 			case EGray4:

    57 				aInfo.iPixelShift = 1;

    58 				break;

    59 			case EGray16:

    60 			case EColor16:

    61 				aInfo.iPixelShift = 2;

    62 				break;

    63 			case EGray256:

    64 			case EColor256:

    65 				aInfo.iPixelShift = 3;

    66 				break;

    67 			case EColor4K:

    68 			case EColor64K:

    69 				aInfo.iPixelShift = 4;

    70 				break;

    71 			case EColor16M:

    72 			case ERgb:

    73 			case EColor16MU:

    74 				aInfo.iPixelShift = 5;

    75 				break;

    76 			}

    77 		}

    78 	else

    79 		aInfo = *(TAcceleratedBitmapInfo*)iHandle;	// iHandle is really a pointer to a TAcceleratedBitmapInfo

    81 	return(KErrNone);

    82 	}

    84 /**

    85 This method sets the value of iHandle data member.

    86 When the iHandle's value is positive - the it is the bitmap address in the memory.

    87 When the iHandle's value is negative - it is a screen number reference:

    88  "-1" - screen 0, "-2" - screen 1, "-3" - screen 2, ...

    89 All that means: negative iHandle values describe the RHardwareBitmap object as a screen

    90 bitmap, the screen number can be calculated from iHandle's value.

    91 Positive iHandle values describe RHardwareBitmap object as an in-memory bitmap.

    92 By default iHandle is initialized with 0, which means - invalid handle and uninitialized

    93 RHardwareBitmap object.

    94 @param aScreenNo Screen number.

    95 @return KErrNone

    96 */

    97 EXPORT_C TInt RHardwareBitmap::SetAsScreenReference(TInt aScreenNo)

    98 	{

    99 	iHandle = aScreenNo;

   100 	return KErrNone;

   101 	}

   103 EXPORT_C TInt RHardwareBitmap::Create(TDisplayMode aDisplayMode, TSize aSize, TUid /*aCreatorUid*/)

   104 	{

   105 	// Make line pitch different from normal bitmaps, useful for testing purposes.

   106 	TInt hwWidth = ((aSize.iWidth + 15) / 16) * 16;

   108 	TInt linePitch;

   110 	switch(aDisplayMode)

   111 		{

   112 		case EColor256:

   113 		case EGray256:

   114 			linePitch = hwWidth;

   115 			break;

   116 		case EColor64K:

   117 		case EColor4K:

   118 			linePitch = hwWidth * 2;

   119 			break;

   120 		case EColor16M:

   121 			linePitch = (((hwWidth * 3) + 11) / 12) * 12; // Multiples of 12 bytes!

   122 			break;

   123 		case ERgb:

   124 		case EColor16MU:

   125 			linePitch = hwWidth * 4;

   126 			break;

   127 		default:

   128 			return(KErrNotSupported);

   129 		}

   131 	TInt memSize = sizeof(TAcceleratedBitmapInfo)+linePitch*aSize.iHeight;

   133 	TAcceleratedBitmapInfo* bitmap = (TAcceleratedBitmapInfo*)GlobalAllocPtr(GMEM_FIXED,memSize);

   135 	if(!bitmap)

   136 		return(KErrNoMemory);

   138 	bitmap->iDisplayMode = aDisplayMode;

   139 	bitmap->iAddress = (TUint8*)(bitmap+1);

   140 	bitmap->iSize = aSize;

   141 	bitmap->iLinePitch = linePitch;

   142 	switch(aDisplayMode)

   143 		{

   144 		case ENone:

   145 			bitmap->iPixelShift = -1;

   146 			break;

   147 		case EGray2:

   148 			bitmap->iPixelShift = 0;

   149 			break;

   150 		case EGray4:

   151 			bitmap->iPixelShift = 1;

   152 			break;

   153 		case EGray16:

   154 		case EColor16:

   155 			bitmap->iPixelShift = 2;

   156 			break;

   157 		case EGray256:

   158 		case EColor256:

   159 			bitmap->iPixelShift = 3;

   160 			break;

   161 		case EColor4K:

   162 		case EColor64K:

   163 			bitmap->iPixelShift = 4;

   164 			break;

   165 		case EColor16M:

   166 		case ERgb:

   167 		case EColor16MU:

   168 			bitmap->iPixelShift = 5;

   169 			break;

   170 		}

   171 	bitmap->iPhysicalAddress = 0;

   173 	iHandle = (TInt)bitmap;

   175 	return(KErrNone);

   176 	}

   178 EXPORT_C void RHardwareBitmap::Destroy()

   179 	{

   180 	GlobalFreePtr((void*)iHandle);

   181 	}

author	sl@SLION-WIN7.fritz.box
	Fri, 15 Jun 2012 03:10:57 +0200
changeset 0	bde4ae8d615e
permissions	-rw-r--r--