//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to use
// this source code. For a copy of the EULA, please see the LICENSE.RTF on your
// install media.
//
#ifndef _SURFACEHEAPV
#define _SURFACEHEAPV

// Surface Heap (use instead of Node2D if you're dealing with multiple surface types
class SurfaceHeapV
{
	SurfaceHeapV		*m_pNext;
	SurfaceHeapV		*m_pPrev;
	ADDRESS			m_pStart;
	DWORD			m_nSize;
	DWORD			m_fUsed;
public:
					SurfaceHeapV
					(
						DWORD size,
						ADDRESS base,
						SurfaceHeapV *pNext = (SurfaceHeapV *)NULL,
						SurfaceHeapV *pPrev = (SurfaceHeapV *)NULL
					);
					~SurfaceHeapV();
	SurfaceHeapV *	Alloc( DWORD size );
	ADDRESS			Address() { return m_pStart; } // offset
	void			Free();
	DWORD			Available();
	DWORD			Size();	// returns size of this & subsequent nodes
	DWORD			NodeSize(){ return m_nSize; }
};

#endif