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// Copyright (c) 2007-2009 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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//
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/**
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@file
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@internalTechnology
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@prototype
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*/
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#ifndef SGIMAGE_CHUNK_H
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#define SGIMAGE_CHUNK_H
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#include <e32std.h>
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/**
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@internalTechnology
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@prototype
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This interface allows access to the data chunk where an image is stored. The chunk
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handle obtained through this interface can be passed to device drivers that need
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access to the pixel data of the image.
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This interface is only supported if the image is stored in a shared chunk.
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*/
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class MSgImage_Chunk
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{
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public:
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enum { EInterfaceUid = 0x102858F1 };
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/**
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@internalTechnology
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@prototype
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Retrieves a handle to the chunk where the pixel data is stored. The returned
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chunk handle is valid until the RSgImage handle is closed.
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@return A handle to the chunk where the pixel data is stored.
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*/
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virtual const RChunk& DataChunk() const = 0;
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/**
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@internalTechnology
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@prototype
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Retrieves the base offset of the pixel data from the base of the chunk.
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@return The base offset of the pixel data from the base of the chunk.
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*/
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virtual TInt DataOffset() const = 0;
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/**
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@internalTechnology
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@prototype
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Retrieves the number of bytes between rows of the pixel data in the chunk.
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@return The number of bytes between rows of the pixel data in the chunk.
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*/
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virtual TInt DataStride() const = 0;
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};
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#endif // SGIMAGE_CHUNK_H
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