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//  Copyright (C) 2005-2006 Lev Kazarkin. All Rights Reserved.
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//
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//  TightVNC is free software; you can redistribute it and/or modify
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//  it under the terms of the GNU General Public License as published by
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//  the Free Software Foundation; either version 2 of the License, or
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//  (at your option) any later version.
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//
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//  This program is distributed in the hope that it will be useful,
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//  but WITHOUT ANY WARRANTY; without even the implied warranty of
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//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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//  GNU General Public License for more details.
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//
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//  You should have received a copy of the GNU General Public License
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//  along with this program; if not, write to the Free Software
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//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
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//  USA.
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//
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// TightVNC distribution homepage on the Web: http://www.tightvnc.com/
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#ifndef _WINVNC_VIDEODRIVER
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#define _WINVNC_VIDEODRIVER
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#include "stdhdrs.h"
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#include "vncRegion.h"
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#define ESC_QVI		1026
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#define MAP1		1030
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#define UNMAP1		1031
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#define TESTMAPPED	1051
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#define MAXCHANGES_BUF 20000
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typedef enum
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{
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	dmf_dfo_IGNORE		= 0,
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	dmf_dfo_FROM_SCREEN = 1,
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	dmf_dfo_FROM_DIB	= 2,
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	dmf_dfo_TO_SCREEN	= 3,
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	dmf_dfo_SCREEN_SCREEN	= 11,
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	dmf_dfo_BLIT		= 12,
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	dmf_dfo_SOLIDFILL	= 13,
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	dmf_dfo_BLEND		= 14,
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	dmf_dfo_TRANS		= 15,
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	dmf_dfo_PLG			= 17,
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	dmf_dfo_TEXTOUT		= 18,
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	dmf_dfo_Ptr_Engage	= 48,	// point is used with this record
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	dmf_dfo_Ptr_Avert	= 49,
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	// 1.0.9.0
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	// mode-assert notifications to manifest PDEV limbo status
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	dmf_dfn_assert_on	= 64,	// DrvAssert(TRUE): PDEV reenabled
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	dmf_dfn_assert_off	= 65,	// DrvAssert(FALSE): PDEV disabled
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} dmf_UpdEvent;
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#define CDS_UPDATEREGISTRY  0x00000001
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#define CDS_TEST            0x00000002
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#define CDS_FULLSCREEN      0x00000004
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#define CDS_GLOBAL          0x00000008
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#define CDS_SET_PRIMARY     0x00000010
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#define CDS_RESET           0x40000000
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#define CDS_SETRECT         0x20000000
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#define CDS_NORESET         0x10000000
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typedef BOOL (WINAPI* pEnumDisplayDevices)(PVOID,DWORD,PVOID,DWORD);
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typedef LONG (WINAPI* pChangeDisplaySettingsEx)(LPCTSTR, LPDEVMODE, HWND, DWORD, LPVOID);
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//*********************************************************************
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typedef struct _CHANGES_RECORD
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{
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	ULONG type;  //screen_to_screen, blit, newcache,oldcache
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	RECT rect;
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	RECT origrect;
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	POINT point;
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	ULONG color; //number used in cache array
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	ULONG refcolor; //slot used to pase btimap data
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}CHANGES_RECORD;
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typedef CHANGES_RECORD *PCHANGES_RECORD;
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typedef struct _CHANGES_BUF
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	{
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	 ULONG counter;
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	 CHANGES_RECORD pointrect[MAXCHANGES_BUF];
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	}CHANGES_BUF;
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typedef CHANGES_BUF *PCHANGES_BUF;
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typedef struct _GETCHANGESBUF
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	{
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	 PCHANGES_BUF buffer;
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	 PVOID Userbuffer;
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	}GETCHANGESBUF;
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typedef GETCHANGESBUF *PGETCHANGESBUF;
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#define	DMF_VERSION_DEFINE(_ver_0,_ver_1,_ver_2,_ver_3)	((_ver_0<<24) | (_ver_1<<16) | (_ver_2<<8) | _ver_3)
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#define	DMF_PROTO_VER_CURRENT	DMF_VERSION_DEFINE(1,2,0,0)
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#define	DMF_PROTO_VER_MINCOMPAT	DMF_VERSION_DEFINE(0,9,0,1)
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struct	Esc_dmf_Qvi_IN
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{
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	ULONG	cbSize;
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	ULONG	app_actual_version;
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	ULONG	display_minreq_version;
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	ULONG	connect_options;		// reserved. must be 0.
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};
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enum
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{
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	esc_qvi_prod_name_max	= 16,
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};
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#define	ESC_QVI_PROD_MIRAGE	"MIRAGE"
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struct	Esc_dmf_Qvi_OUT
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{
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	ULONG	cbSize;
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	ULONG	display_actual_version;
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	ULONG	miniport_actual_version;
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	ULONG	app_minreq_version;
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	ULONG	display_buildno;
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	ULONG	miniport_buildno;
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	char	prod_name[esc_qvi_prod_name_max];
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};
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class vncDesktop;
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class vncVideoDriver
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{
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// Fields
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public:
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// Methods
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public:
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	// Make the desktop thread & window proc friends
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	vncVideoDriver();
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	~vncVideoDriver();
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	BOOL Activate(BOOL fForDirectAccess, const RECT *prcltarget);
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	void Deactivate();
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	BOOL Activate_NT50(BOOL fForDirectAccess, const RECT *prcltarget);
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	void Deactivate_NT50();
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	BOOL Activate_NT46(BOOL fForDirectAccess);
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	void Deactivate_NT46();
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	BOOL CheckVersion();
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	BOOL MapSharedbuffers(BOOL fForDirectScreenAccess);
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	void UnMapSharedbuffers();
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	BOOL TestMapped();
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	void HandleDriverChanges(
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		vncDesktop *pDesk,
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		vncRegion &rgn,
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		int xoffset,
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		int yoffset,
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		BOOL &bPointerShapeChange);
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	void HandleDriverChangesSeries(
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		vncDesktop *pDesk,
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		vncRegion &rgn,
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		int xoffset,
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		int yoffset,
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		const CHANGES_RECORD *first,
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		const CHANGES_RECORD *last,
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		BOOL &bPointerShapeChange);
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	void ResetCounter() { oldCounter = bufdata.buffer->counter; }
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	BYTE *GetScreenView(void) {	return (BYTE*)bufdata.Userbuffer; }
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	BOOL IsActive(void) {	return m_fIsActive; }
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	BOOL IsDirectAccessInEffect(void) {	return m_fDirectAccessInEffect; }
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	BOOL IsHandlingScreen2ScreenBlt(void) { return m_fHandleScreen2ScreenBlt; }
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protected:
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	static BOOL	LookupVideoDeviceAlt(
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		LPCTSTR szDevStr,
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		LPCTSTR szDevStrAlt,
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		INT &devNum,
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		DISPLAY_DEVICE *pDd);
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	static HKEY	CreateDeviceKey(LPCTSTR szMpName);
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	char	m_devname[32];
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	ULONG	m_drv_ver_mj;
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	ULONG	m_drv_ver_mn;
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	GETCHANGESBUF bufdata;
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	ULONG oldCounter;
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	HDC m_gdc;
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	bool	m_fIsActive;
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	bool	m_fDirectAccessInEffect;
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	bool	m_fHandleScreen2ScreenBlt;
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	static char	vncVideoDriver::szDriverString[];
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	static char	vncVideoDriver::szDriverStringAlt[];
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	static char	vncVideoDriver::szMiniportName[];
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};
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VOID	DebugPrint(PCHAR DebugMessage, ...);
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#ifdef _DEBUG
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#define	DPF(x) DebugPrint x
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#else
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#define	DPF(x)
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#endif
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#endif
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