os/graphics/fbs/fontandbitmapserver/sfbs/patchableconstants.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.
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// Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// Defines all the patchable constants in fbserv.exe.
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// The definition of the constants must not be in the same file as the usage,
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// or the compiler will optimise them out, so put them all in here.
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// Note that existing patchable constants are declared as global,
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// i.e. not in a namespace, so I have continued the trend.
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// 
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//
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#include <e32def.h>
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/**
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@SYMPatchable
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@publishedPartner
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@released
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This constant determines the maximum size of the shared heap in the font and bitmap server.
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Up to the value of the constant, the size of the virtual address range reserved for this heap
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equals the amount of physical RAM memory. As available hardware RAM sizes increase in the future,
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it may become impossible to reserve a virtual address range that big, hence the need for an upper limit.
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@note	Default value: 64MB (0x04000000)
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@note   Emulator value 2MB (0x0200000)
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*/
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#ifdef __WINS__
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EXPORT_C extern const TInt KFbServSharedHeapMaxSize = 0x00200000;
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#else
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EXPORT_C extern const TInt KFbServSharedHeapMaxSize = 0x04000000;
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#endif
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/**
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@SYMPatchable
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@internalTechnology
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This constant modifies the writable data paging mode used by the font and bitmap server.
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It is configured at rom build time via the following definitions in fbserv.iby:
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	SYMBIAN_GRAPHICS_FBSERV_PAGEDATA
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	SYMBIAN_GRAPHICS_FBSERV_UNPAGEDDATA
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	SYMBIAN_GRAPHICS_FBSERV_PAGE_BITMAP_DATA_ONLY
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	SYMBIAN_GRAPHICS_FBSERV_PAGE_BITMAP_DATA_AND_SHARED_HEAP_ONLY
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@note	Default value: (0x00) This does not modify the writable data paging mode.
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*/
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EXPORT_C extern const TInt KFbServWritableDataPagingMode = 0x00;
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/**
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@SYMPatchable
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@publishedPartner
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@prototype
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This constant determines the maximum size of the GPU memory that the font and 
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bitmap server's glyph atlas can use.
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The glyph atlas will store glyphs in this memory.  When the glyph atlas reaches 
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this limit, old glyphs will be evicted from the cache to make space for new glyphs.
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@note	Default value: 0.5 MB (0x00080000).
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*/
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EXPORT_C extern const TInt KFbServGlyphAtlasCacheLimit = 0x00080000;
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// Header files declaring these constants are included to confirm that the definition matches.
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// They are included at the end because otherwise the ARM compiler refuses to initialise the values.
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#if (__ARMCC_VERSION >= 310000)
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//#	include "SERVER.H"	// Commented out to prevent warning dllexport/dllimport conflict
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#else
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#	include "SERVER.H"
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#endif