#ifndef OVERLAY_SURFACE_H
#define OVERLAY_SURFACE_H

#include <tchar.h>
#include <ddraw.h>

//-----------------------------------------------------------------------------
// Miscellaneous helper functions
//-----------------------------------------------------------------------------
#define SAFE_DELETE(p)       { if(p) { delete (p);     (p)=NULL; } }
#define SAFE_DELETE_ARRAY(p) { if(p) { delete[] (p);   (p)=NULL; } }
#define SAFE_RELEASE(p)      { if(p) { (p)->Release(); (p)=NULL; } }

class COverlaySurface;
//extern COverlaySurface g_overlaySurface;
extern COverlaySurface* g_poverlaySurface;

class COverlaySurface {
public:
	HRESULT InitDirectDraw(HWND hWnd);
	BOOL    HasOverlaySupport();
	HRESULT CreateDirectDrawSurfaces(HWND hWnd, DWORD width, DWORD heght);
	VOID    FreeDirectDraw();
	HRESULT RestoreSurfaces();
	void	UpdateOverlay();
	LPDIRECTDRAW7 GetDirectDraw()					{return m_pDD;}
	LPDIRECTDRAWSURFACE7 GetOverlayObject()			{return m_pDDSOverlay;}
	LPDIRECTDRAWSURFACE7 GetBackOverlayObject()		{return m_pDDSOverlayBack;}
	void	SetSrcRect(RECT rect) {m_rcSrc = rect;}
	void	SetDstRect(RECT rect) {m_rcDst = rect;}

	COverlaySurface();
	virtual ~COverlaySurface();
private:
	LPDIRECTDRAW7			m_pDD;
	LPDIRECTDRAWSURFACE7	m_pDDSPrimary;
	LPDIRECTDRAWSURFACE7	m_pDDSOverlay;
	LPDIRECTDRAWSURFACE7	m_pDDSOverlayBack;
	DDOVERLAYFX				m_OverlayFX;         
	DWORD					m_dwOverlayFlags;
	DDCAPS					m_ddcaps;
	RECT					m_rcSrc;
	RECT					m_rcDst;

	// This will be used as the color key, so try to make it something
	// that doesn't appear in the source image.
	COLORREF				m_dwBackgroundColor;
};


//BOOL	SurfaceLock(LPDIRECTDRAWSURFACE7 pDDSOverlay, OVERLAY_SURFACE_INFO* pInfo);
//void	SurfaceUnlock(LPDIRECTDRAWSURFACE7 pDDSOverlay);

#endif // OVERLAY_SURFACE_H