VBoxDispIf.cpp@ 44824

Last change on this file since 44824 was 44763, checked in by vboxsync, 12 years ago
WINNT/VBoxTray/VBoxDispIf: No need to be extra cautious while checking for null pointer. One check is sufficient.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 55.9 KB

Line
1	/** @file
2	* VBoxTray - Display Settings Interface abstraction for XPDM & WDDM
3	*/
4
5	/*
6	* Copyright (C) 2006-2012 Oracle Corporation
7	*
8	* This file is part of VirtualBox Open Source Edition (OSE), as
9	* available from http://www.virtualbox.org. This file is free software;
10	* you can redistribute it and/or modify it under the terms of the GNU
11	* General Public License (GPL) as published by the Free Software
12	* Foundation, in version 2 as it comes in the "COPYING" file of the
13	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15	*/
16
17	#include "VBoxTray.h"
18	#define _WIN32_WINNT 0x0601
19	#include <iprt/log.h>
20	#include <iprt/err.h>
21	#include <iprt/assert.h>
22
23	#include <malloc.h>
24
25	#ifdef VBOX_WITH_WDDM
26	#include <iprt/asm.h>
27	#endif
28
29	/* APIs specific to win7 and above WDDM architecture. Not available for Vista WDDM.
30	* This is the reason they have not been put in the VBOXDISPIF struct in VBoxDispIf.h
31	*/
32	typedef struct _VBOXDISPLAYWDDMAPICONTEXT
33	{
34	LONG (WINAPI * pfnSetDisplayConfig)(UINT numPathArrayElements,DISPLAYCONFIG_PATH_INFO *pathArray,UINT numModeInfoArrayElements,
35	DISPLAYCONFIG_MODE_INFO *modeInfoArray, UINT Flags);
36	LONG (WINAPI * pfnQueryDisplayConfig)(UINT Flags,UINT pNumPathArrayElements, DISPLAYCONFIG_PATH_INFO pPathInfoArray,
37	UINT pNumModeInfoArrayElements, DISPLAYCONFIG_MODE_INFO pModeInfoArray,
38	DISPLAYCONFIG_TOPOLOGY_ID *pCurrentTopologyId);
39	LONG (WINAPI * pfnGetDisplayConfigBufferSizes)(UINT Flags, UINT pNumPathArrayElements, UINT pNumModeInfoArrayElements);
40	} _VBOXDISPLAYWDDMAPICONTEXT;
41
42	static _VBOXDISPLAYWDDMAPICONTEXT gCtx = {0};
43
44	/* display driver interface abstraction for XPDM & WDDM
45	* with WDDM we can not use ExtEscape to communicate with our driver
46	* because we do not have XPDM display driver any more, i.e. escape requests are handled by cdd
47	* that knows nothing about us */
48	DWORD VBoxDispIfInit(PVBOXDISPIF pIf)
49	{
50	pIf->enmMode = VBOXDISPIF_MODE_XPDM;
51	return NO_ERROR;
52	}
53
54	#ifdef VBOX_WITH_WDDM
55	static void vboxDispIfWddmTerm(PCVBOXDISPIF pIf);
56	static DWORD vboxDispIfWddmInit(PCVBOXDISPIF pIf);
57	#endif
58
59	DWORD VBoxDispIfTerm(PVBOXDISPIF pIf)
60	{
61	#ifdef VBOX_WITH_WDDM
62	if (pIf->enmMode == VBOXDISPIF_MODE_WDDM)
63	{
64	vboxDispIfWddmTerm(pIf);
65	}
66	#endif
67
68	pIf->enmMode = VBOXDISPIF_MODE_UNKNOWN;
69	return NO_ERROR;
70	}
71
72	static DWORD vboxDispIfEscapeXPDM(PCVBOXDISPIF pIf, PVBOXDISPIFESCAPE pEscape, int cbData, int iDirection)
73	{
74	HDC hdc = GetDC(HWND_DESKTOP);
75	VOID *pvData = cbData ? VBOXDISPIFESCAPE_DATA(pEscape, VOID) : NULL;
76	int iRet = ExtEscape(hdc, pEscape->escapeCode,
77	iDirection >= 0 ? cbData : 0,
78	iDirection >= 0 ? (LPSTR)pvData : NULL,
79	iDirection <= 0 ? cbData : 0,
80	iDirection <= 0 ? (LPSTR)pvData : NULL);
81	ReleaseDC(HWND_DESKTOP, hdc);
82	if (iRet > 0)
83	return VINF_SUCCESS;
84	else if (iRet == 0)
85	return ERROR_NOT_SUPPORTED;
86	/* else */
87	return ERROR_GEN_FAILURE;
88	}
89
90	#ifdef VBOX_WITH_WDDM
91	static DWORD vboxDispIfSwitchToWDDM(PVBOXDISPIF pIf)
92	{
93	DWORD err = NO_ERROR;
94	OSVERSIONINFO OSinfo;
95	OSinfo.dwOSVersionInfoSize = sizeof (OSinfo);
96	GetVersionEx (&OSinfo);
97	bool bSupported = true;
98
99	if (OSinfo.dwMajorVersion >= 6)
100	{
101	Log((__FUNCTION__": this is vista and up\n"));
102	HMODULE hUser = GetModuleHandle("USER32");
103	if (hUser)
104	{
105	(uintptr_t )&pIf->modeData.wddm.pfnChangeDisplaySettingsEx = (uintptr_t)GetProcAddress(hUser, "ChangeDisplaySettingsExA");
106	Log((__FUNCTION__": VBoxDisplayInit: pfnChangeDisplaySettingsEx = %p\n", pIf->modeData.wddm.pfnChangeDisplaySettingsEx));
107	bSupported &= !!(pIf->modeData.wddm.pfnChangeDisplaySettingsEx);
108
109	(uintptr_t )&pIf->modeData.wddm.pfnEnumDisplayDevices = (uintptr_t)GetProcAddress(hUser, "EnumDisplayDevicesA");
110	Log((__FUNCTION__": VBoxDisplayInit: pfnEnumDisplayDevices = %p\n", pIf->modeData.wddm.pfnEnumDisplayDevices));
111	bSupported &= !!(pIf->modeData.wddm.pfnEnumDisplayDevices);
112	/* for win 7 and above */
113	if (OSinfo.dwMinorVersion >= 1)
114	{
115	(uintptr_t )&gCtx.pfnSetDisplayConfig = (uintptr_t)GetProcAddress(hUser, "SetDisplayConfig");
116	Log((__FUNCTION__": VBoxDisplayInit: pfnSetDisplayConfig = %p\n", gCtx.pfnSetDisplayConfig));
117	bSupported &= !!(gCtx.pfnSetDisplayConfig);
118
119	(uintptr_t )&gCtx.pfnQueryDisplayConfig = (uintptr_t)GetProcAddress(hUser, "QueryDisplayConfig");
120	Log((__FUNCTION__": VBoxDisplayInit: pfnQueryDisplayConfig = %p\n", gCtx.pfnQueryDisplayConfig));
121	bSupported &= !!(gCtx.pfnQueryDisplayConfig);
122
123	(uintptr_t )&gCtx.pfnGetDisplayConfigBufferSizes = (uintptr_t)GetProcAddress(hUser, "GetDisplayConfigBufferSizes");
124	Log((__FUNCTION__": VBoxDisplayInit: pfnGetDisplayConfigBufferSizes = %p\n", gCtx.pfnGetDisplayConfigBufferSizes));
125	bSupported &= !!(gCtx.pfnGetDisplayConfigBufferSizes);
126	}
127
128	/* this is vista and up */
129	HMODULE hGdi32 = GetModuleHandle("gdi32");
130	if (hGdi32 != NULL)
131	{
132	pIf->modeData.wddm.pfnD3DKMTOpenAdapterFromHdc = (PFND3DKMT_OPENADAPTERFROMHDC)GetProcAddress(hGdi32, "D3DKMTOpenAdapterFromHdc");
133	Log((__FUNCTION__"pfnD3DKMTOpenAdapterFromHdc = %p\n", pIf->modeData.wddm.pfnD3DKMTOpenAdapterFromHdc));
134	bSupported &= !!(pIf->modeData.wddm.pfnD3DKMTOpenAdapterFromHdc);
135
136	pIf->modeData.wddm.pfnD3DKMTOpenAdapterFromGdiDisplayName = (PFND3DKMT_OPENADAPTERFROMGDIDISPLAYNAME)GetProcAddress(hGdi32, "D3DKMTOpenAdapterFromGdiDisplayName");
137	Log((__FUNCTION__": pfnD3DKMTOpenAdapterFromGdiDisplayName = %p\n", pIf->modeData.wddm.pfnD3DKMTOpenAdapterFromGdiDisplayName));
138	bSupported &= !!(pIf->modeData.wddm.pfnD3DKMTOpenAdapterFromGdiDisplayName);
139
140	pIf->modeData.wddm.pfnD3DKMTCloseAdapter = (PFND3DKMT_CLOSEADAPTER)GetProcAddress(hGdi32, "D3DKMTCloseAdapter");
141	Log((__FUNCTION__": pfnD3DKMTCloseAdapter = %p\n", pIf->modeData.wddm.pfnD3DKMTCloseAdapter));
142	bSupported &= !!(pIf->modeData.wddm.pfnD3DKMTCloseAdapter);
143
144	pIf->modeData.wddm.pfnD3DKMTEscape = (PFND3DKMT_ESCAPE)GetProcAddress(hGdi32, "D3DKMTEscape");
145	Log((__FUNCTION__": pfnD3DKMTEscape = %p\n", pIf->modeData.wddm.pfnD3DKMTEscape));
146	bSupported &= !!(pIf->modeData.wddm.pfnD3DKMTCloseAdapter);
147
148	pIf->modeData.wddm.pfnD3DKMTInvalidateActiveVidPn = (PFND3DKMT_INVALIDATEACTIVEVIDPN)GetProcAddress(hGdi32, "D3DKMTInvalidateActiveVidPn");
149	Log((__FUNCTION__": pfnD3DKMTInvalidateActiveVidPn = %p\n", pIf->modeData.wddm.pfnD3DKMTInvalidateActiveVidPn));
150	bSupported &= !!(pIf->modeData.wddm.pfnD3DKMTInvalidateActiveVidPn);
151
152	pIf->modeData.wddm.pfnD3DKMTPollDisplayChildren = (PFND3DKMT_POLLDISPLAYCHILDREN)GetProcAddress(hGdi32, "D3DKMTPollDisplayChildren");
153	Log((__FUNCTION__": pfnD3DKMTPollDisplayChildren = %p\n", pIf->modeData.wddm.pfnD3DKMTPollDisplayChildren));
154	bSupported &= !!(pIf->modeData.wddm.pfnD3DKMTPollDisplayChildren);
155
156	if (!bSupported)
157	{
158	Log((__FUNCTION__": one of pfnD3DKMT function pointers failed to initialize\n"));
159	err = ERROR_NOT_SUPPORTED;
160	}
161	}
162	else
163	{
164	Log((__FUNCTION__": GetModuleHandle(gdi32) failed, err(%d)\n", GetLastError()));
165	err = ERROR_NOT_SUPPORTED;
166	}
167
168	}
169	else
170	{
171	Log((__FUNCTION__": GetModuleHandle(USER32) failed, err(%d)\n", GetLastError()));
172	err = ERROR_NOT_SUPPORTED;
173	}
174	}
175	else
176	{
177	Log((__FUNCTION__": can not switch to VBOXDISPIF_MODE_WDDM, because os is not Vista or upper\n"));
178	err = ERROR_NOT_SUPPORTED;
179	}
180
181	if (err == ERROR_SUCCESS)
182	{
183	err = vboxDispIfWddmInit(pIf);
184	}
185
186	return err;
187	}
188
189	static DWORD vboxDispIfWDDMAdpHdcCreate(int iDisplay, HDC phDc, DISPLAY_DEVICE pDev)
190	{
191	DWORD winEr = ERROR_INVALID_STATE;
192	memset(pDev, 0, sizeof (*pDev));
193	pDev->cb = sizeof (*pDev);
194
195	for (int i = 0; ; ++i)
196	{
197	if (EnumDisplayDevices(NULL, /* LPCTSTR lpDevice / i, / DWORD iDevNum */
198	pDev, 0 /* DWORD dwFlags*/))
199	{
200	if (i == iDisplay \|\| (iDisplay < 0 && pDev->StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE))
201	{
202	HDC hDc = CreateDC(NULL, pDev->DeviceName, NULL, NULL);
203	if (hDc)
204	{
205	*phDc = hDc;
206	return NO_ERROR;
207	}
208	else
209	{
210	winEr = GetLastError();
211	Log(("CreateDC failed %d", winEr));
212	break;
213	}
214	}
215	Log(("display data no match display(%d): i(%d), flags(%d)", iDisplay, i, pDev->StateFlags));
216	}
217	else
218	{
219	winEr = GetLastError();
220	Log(("EnumDisplayDevices failed %d", winEr));
221	break;
222	}
223	}
224
225	Log(("vboxDispIfWDDMAdpHdcCreate failure branch %d", winEr));
226	return winEr;
227	}
228
229
230	typedef DECLCALLBACK(BOOLEAN) FNVBOXDISPIFWDDM_ADAPTEROP(PCVBOXDISPIF pIf, D3DKMT_HANDLE hAdapter, DISPLAY_DEVICE *pDev, PVOID pContext);
231	typedef FNVBOXDISPIFWDDM_ADAPTEROP *PFNVBOXDISPIFWDDM_ADAPTEROP;
232	static DWORD vboxDispIfWDDMAdapterOp(PCVBOXDISPIF pIf, int iDisplay, PFNVBOXDISPIFWDDM_ADAPTEROP pfnOp, PVOID pContext)
233	{
234	D3DKMT_OPENADAPTERFROMHDC OpenAdapterData = {0};
235	DISPLAY_DEVICE DDev;
236	DWORD err = vboxDispIfWDDMAdpHdcCreate(iDisplay, &OpenAdapterData.hDc, &DDev);
237	Assert(err == NO_ERROR);
238	if (err == NO_ERROR)
239	{
240	NTSTATUS Status = pIf->modeData.wddm.pfnD3DKMTOpenAdapterFromHdc(&OpenAdapterData);
241	Assert(!Status);
242	if (!Status)
243	{
244	BOOLEAN bCloseAdapter = pfnOp(pIf, OpenAdapterData.hAdapter, &DDev, pContext);
245
246	if (bCloseAdapter)
247	{
248	D3DKMT_CLOSEADAPTER ClosaAdapterData = {0};
249	ClosaAdapterData.hAdapter = OpenAdapterData.hAdapter;
250	Status = pIf->modeData.wddm.pfnD3DKMTCloseAdapter(&ClosaAdapterData);
251	if (Status)
252	{
253	Log((__FUNCTION__": pfnD3DKMTCloseAdapter failed, Status (0x%x)\n", Status));
254	}
255	}
256	}
257	else
258	{
259	Log((__FUNCTION__": pfnD3DKMTOpenAdapterFromGdiDisplayName failed, Status (0x%x)\n", Status));
260	err = ERROR_GEN_FAILURE;
261	}
262
263	DeleteDC(OpenAdapterData.hDc);
264	}
265	else
266	Log((__FUNCTION__": vboxDispIfWDDMAdpHdcCreate failed, winEr (%d)\n", err));
267
268	return err;
269	}
270
271	typedef struct
272	{
273	NTSTATUS Status;
274	PVBOXDISPIFESCAPE pEscape;
275	int cbData;
276	D3DDDI_ESCAPEFLAGS EscapeFlags;
277	} VBOXDISPIFWDDM_ESCAPEOP_CONTEXT, *PVBOXDISPIFWDDM_ESCAPEOP_CONTEXT;
278
279	DECLCALLBACK(BOOLEAN) vboxDispIfEscapeWDDMOp(PCVBOXDISPIF pIf, D3DKMT_HANDLE hAdapter, DISPLAY_DEVICE *pDev, PVOID pContext)
280	{
281	PVBOXDISPIFWDDM_ESCAPEOP_CONTEXT pCtx = (PVBOXDISPIFWDDM_ESCAPEOP_CONTEXT)pContext;
282
283	D3DKMT_ESCAPE EscapeData = {0};
284	EscapeData.hAdapter = hAdapter;
285	//EscapeData.hDevice = NULL;
286	EscapeData.Type = D3DKMT_ESCAPE_DRIVERPRIVATE;
287	EscapeData.Flags = pCtx->EscapeFlags;
288	EscapeData.pPrivateDriverData = pCtx->pEscape;
289	EscapeData.PrivateDriverDataSize = VBOXDISPIFESCAPE_SIZE(pCtx->cbData);
290	//EscapeData.hContext = NULL;
291
292	pCtx->Status = pIf->modeData.wddm.pfnD3DKMTEscape(&EscapeData);
293
294	return TRUE;
295	}
296
297	static DWORD vboxDispIfEscapeWDDM(PCVBOXDISPIF pIf, PVBOXDISPIFESCAPE pEscape, int cbData, BOOL fHwAccess)
298	{
299	VBOXDISPIFWDDM_ESCAPEOP_CONTEXT Ctx = {0};
300	Ctx.pEscape = pEscape;
301	Ctx.cbData = cbData;
302	if (fHwAccess)
303	Ctx.EscapeFlags.HardwareAccess = 1;
304	DWORD err = vboxDispIfWDDMAdapterOp(pIf, -1 /* iDisplay, -1 means primary */, vboxDispIfEscapeWDDMOp, &Ctx);
305	if (err == NO_ERROR)
306	{
307	if (!Ctx.Status)
308	err = NO_ERROR;
309	else
310	{
311	if (Ctx.Status == 0xC00000BBL) /* not supported */
312	err = ERROR_NOT_SUPPORTED;
313	else
314	err = ERROR_GEN_FAILURE;
315	Log((__FUNCTION__": pfnD3DKMTEscape failed, Status (0x%x)\n", Ctx.Status));
316	}
317	}
318	else
319	Log((__FUNCTION__": vboxDispIfWDDMAdapterOp failed, err (%d)\n", err));
320
321	return err;
322	}
323
324	typedef struct
325	{
326	NTSTATUS Status;
327	VBOXWDDM_RECOMMENDVIDPN_SCREEN_INFO Info;
328	} VBOXDISPIFWDDM_RESIZEOP_CONTEXT, *PVBOXDISPIFWDDM_RESIZEOP_CONTEXT;
329
330	DECLCALLBACK(BOOLEAN) vboxDispIfResizeWDDMOp(PCVBOXDISPIF pIf, D3DKMT_HANDLE hAdapter, DISPLAY_DEVICE *pDev, PVOID pContext)
331	{
332	PVBOXDISPIFWDDM_RESIZEOP_CONTEXT pCtx = (PVBOXDISPIFWDDM_RESIZEOP_CONTEXT)pContext;
333	D3DKMT_INVALIDATEACTIVEVIDPN IAVidPnData = {0};
334	uint32_t cbData = VBOXWDDM_RECOMMENDVIDPN_SIZE(1);
335	PVBOXWDDM_RECOMMENDVIDPN pData = (PVBOXWDDM_RECOMMENDVIDPN)malloc(cbData);
336	if (pData)
337	{
338	memset(pData, 0, cbData);
339	pData->cScreenInfos = 1;
340	memcpy(&pData->aScreenInfos[0], &pCtx->Info, sizeof (VBOXWDDM_RECOMMENDVIDPN_SCREEN_INFO));
341
342	IAVidPnData.hAdapter = hAdapter;
343	IAVidPnData.pPrivateDriverData = pData;
344	IAVidPnData.PrivateDriverDataSize = cbData;
345
346	pCtx->Status = pIf->modeData.wddm.pfnD3DKMTInvalidateActiveVidPn(&IAVidPnData);
347	Assert(!pCtx->Status);
348	if (pCtx->Status)
349	Log((__FUNCTION__": pfnD3DKMTInvalidateActiveVidPn failed, Status (0x%x)\n", pCtx->Status));
350
351	free(pData);
352	}
353	else
354	{
355	Log((__FUNCTION__": malloc failed\n"));
356	pCtx->Status = -1;
357	}
358
359	return TRUE;
360	}
361
362	static DWORD vboxDispIfResizeWDDM(PCVBOXDISPIF const pIf, ULONG Id, DWORD Width, DWORD Height, DWORD BitsPerPixel)
363	{
364	VBOXDISPIFWDDM_RESIZEOP_CONTEXT Ctx = {0};
365	Ctx.Info.Id = Id;
366	Ctx.Info.Width = Width;
367	Ctx.Info.Height = Height;
368	Ctx.Info.BitsPerPixel = BitsPerPixel;
369	DWORD err = vboxDispIfWDDMAdapterOp(pIf, -1, /* (int)Id - always say -1 to use primary display since the display does not really matter here */
370	vboxDispIfResizeWDDMOp, &Ctx);
371	if (err == NO_ERROR)
372	{
373	if (!Ctx.Status)
374	err = NO_ERROR;
375	else
376	{
377	if (Ctx.Status == 0xC00000BBL) /* not supported */
378	err = ERROR_NOT_SUPPORTED;
379	else
380	err = ERROR_GEN_FAILURE;
381	Log((__FUNCTION__": vboxDispIfResizeWDDMOp failed, Status (0x%x)\n", Ctx.Status));
382	}
383	}
384	else
385	Log((__FUNCTION__": vboxDispIfWDDMAdapterOp failed, err (%d)\n", err));
386
387	return err;
388	}
389	#endif
390
391	DWORD VBoxDispIfEscape(PCVBOXDISPIF pIf, PVBOXDISPIFESCAPE pEscape, int cbData)
392	{
393	switch (pIf->enmMode)
394	{
395	case VBOXDISPIF_MODE_XPDM_NT4:
396	case VBOXDISPIF_MODE_XPDM:
397	return vboxDispIfEscapeXPDM(pIf, pEscape, cbData, 1);
398	#ifdef VBOX_WITH_WDDM
399	case VBOXDISPIF_MODE_WDDM:
400	return vboxDispIfEscapeWDDM(pIf, pEscape, cbData, TRUE /* BOOL fHwAccess */);
401	#endif
402	default:
403	Log((__FUNCTION__": unknown mode (%d)\n", pIf->enmMode));
404	return ERROR_INVALID_PARAMETER;
405	}
406	}
407
408	DWORD VBoxDispIfEscapeInOut(PCVBOXDISPIF const pIf, PVBOXDISPIFESCAPE pEscape, int cbData)
409	{
410	switch (pIf->enmMode)
411	{
412	case VBOXDISPIF_MODE_XPDM_NT4:
413	case VBOXDISPIF_MODE_XPDM:
414	return vboxDispIfEscapeXPDM(pIf, pEscape, cbData, 0);
415	#ifdef VBOX_WITH_WDDM
416	case VBOXDISPIF_MODE_WDDM:
417	return vboxDispIfEscapeWDDM(pIf, pEscape, cbData, TRUE /* BOOL fHwAccess */);
418	#endif
419	default:
420	Log((__FUNCTION__": unknown mode (%d)\n", pIf->enmMode));
421	return ERROR_INVALID_PARAMETER;
422	}
423	}
424
425	static DWORD vboxDispIfResizeXPDM(PCVBOXDISPIF const pIf, ULONG Id, DWORD Width, DWORD Height, DWORD BitsPerPixel)
426	{
427	return ERROR_NOT_SUPPORTED;
428	}
429
430	DWORD VBoxDispIfResize(PCVBOXDISPIF const pIf, ULONG Id, DWORD Width, DWORD Height, DWORD BitsPerPixel)
431	{
432	switch (pIf->enmMode)
433	{
434	case VBOXDISPIF_MODE_XPDM_NT4:
435	return ERROR_NOT_SUPPORTED;
436	case VBOXDISPIF_MODE_XPDM:
437	return vboxDispIfResizeXPDM(pIf, Id, Width, Height, BitsPerPixel);
438	#ifdef VBOX_WITH_WDDM
439	case VBOXDISPIF_MODE_WDDM:
440	return vboxDispIfResizeWDDM(pIf, Id, Width, Height, BitsPerPixel);
441	#endif
442	default:
443	Log((__FUNCTION__": unknown mode (%d)\n", pIf->enmMode));
444	return ERROR_INVALID_PARAMETER;
445	}
446	}
447
448
449	#ifdef VBOX_WITH_WDDM
450	/**/
451	#define VBOXRR_TIMER_ID 1234
452
453	typedef struct VBOXRR
454	{
455	HANDLE hThread;
456	DWORD idThread;
457	HANDLE hEvent;
458	HWND hWnd;
459	CRITICAL_SECTION CritSect;
460	UINT_PTR idTimer;
461	PCVBOXDISPIF pIf;
462	DISPLAY_DEVICE *paDisplayDevices;
463	DEVMODE *paDeviceModes;
464	UINT cDevModes;
465	} VBOXRR, *PVBOXRR;
466
467	static VBOXRR g_VBoxRr = {0};
468
469	#define VBOX_E_INSUFFICIENT_BUFFER HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER)
470	#define VBOX_E_NOT_SUPPORTED HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED)
471
472	static void vboxRrRetryStopLocked()
473	{
474	PVBOXRR pMon = &g_VBoxRr;
475	if (pMon->pIf)
476	{
477	if (pMon->paDisplayDevices)
478	{
479	free(pMon->paDisplayDevices);
480	pMon->paDisplayDevices = NULL;
481	}
482
483	if (pMon->paDeviceModes)
484	{
485	free(pMon->paDeviceModes);
486	pMon->paDeviceModes = NULL;
487	}
488
489	if (pMon->idTimer)
490	{
491	KillTimer(pMon->hWnd, pMon->idTimer);
492	pMon->idTimer = 0;
493	}
494
495	pMon->cDevModes = 0;
496	pMon->pIf = NULL;
497	}
498	}
499
500	static void VBoxRrRetryStop()
501	{
502	PVBOXRR pMon = &g_VBoxRr;
503	EnterCriticalSection(&pMon->CritSect);
504	vboxRrRetryStopLocked();
505	LeaveCriticalSection(&pMon->CritSect);
506	}
507
508	static DWORD vboxDispIfWddmValidateFixResize(PCVBOXDISPIF const pIf, DISPLAY_DEVICE paDisplayDevices, DEVMODE paDeviceModes, UINT cDevModes);
509
510	static void vboxRrRetryReschedule()
511	{
512	}
513
514	static void VBoxRrRetrySchedule(PCVBOXDISPIF const pIf, DISPLAY_DEVICE paDisplayDevices, DEVMODE paDeviceModes, UINT cDevModes)
515	{
516	PVBOXRR pMon = &g_VBoxRr;
517	EnterCriticalSection(&pMon->CritSect);
518	vboxRrRetryStopLocked();
519
520	pMon->pIf = pIf;
521	if (cDevModes)
522	{
523	pMon->paDisplayDevices = (DISPLAY_DEVICE)malloc(sizeof (paDisplayDevices) * cDevModes);
524	Assert(pMon->paDisplayDevices);
525	if (!pMon->paDisplayDevices)
526	{
527	Log(("malloc failed!"));
528	vboxRrRetryStopLocked();
529	LeaveCriticalSection(&pMon->CritSect);
530	return;
531	}
532	memcpy(pMon->paDisplayDevices, paDisplayDevices, sizeof (paDisplayDevices) cDevModes);
533
534	pMon->paDeviceModes = (DEVMODE)malloc(sizeof (paDeviceModes) * cDevModes);
535	Assert(pMon->paDeviceModes);
536	if (!pMon->paDeviceModes)
537	{
538	Log(("malloc failed!"));
539	vboxRrRetryStopLocked();
540	LeaveCriticalSection(&pMon->CritSect);
541	return;
542	}
543	memcpy(pMon->paDeviceModes, paDeviceModes, sizeof (paDeviceModes) cDevModes);
544	}
545	pMon->cDevModes = cDevModes;
546
547	pMon->idTimer = SetTimer(pMon->hWnd, VBOXRR_TIMER_ID, 1000, (TIMERPROC)NULL);
548	Assert(pMon->idTimer);
549	if (!pMon->idTimer)
550	{
551	Log(("VBoxTray: SetTimer failed!, err %d\n", GetLastError()));
552	vboxRrRetryStopLocked();
553	}
554
555	LeaveCriticalSection(&pMon->CritSect);
556	}
557
558	static void vboxRrRetryPerform()
559	{
560	PVBOXRR pMon = &g_VBoxRr;
561	EnterCriticalSection(&pMon->CritSect);
562	if (pMon->pIf)
563	{
564	DWORD dwErr = vboxDispIfWddmValidateFixResize(pMon->pIf, pMon->paDisplayDevices, pMon->paDeviceModes, pMon->cDevModes);
565	if (ERROR_RETRY != dwErr)
566	VBoxRrRetryStop();
567	else
568	vboxRrRetryReschedule();
569	}
570	LeaveCriticalSection(&pMon->CritSect);
571	}
572
573	static LRESULT CALLBACK vboxRrWndProc(HWND hwnd,
574	UINT uMsg,
575	WPARAM wParam,
576	LPARAM lParam
577	)
578	{
579	switch(uMsg)
580	{
581	case WM_DISPLAYCHANGE:
582	{
583	Log(("VBoxTray: WM_DISPLAYCHANGE\n"));
584	VBoxRrRetryStop();
585	return 0;
586	}
587	case WM_TIMER:
588	{
589	if (wParam == VBOXRR_TIMER_ID)
590	{
591	Log(("VBoxTray: VBOXRR_TIMER_ID\n"));
592	vboxRrRetryPerform();
593	return 0;
594	}
595	break;
596	}
597	case WM_CLOSE:
598	Log((__FUNCTION__": got WM_CLOSE for hwnd(0x%x)", hwnd));
599	return 0;
600	case WM_DESTROY:
601	Log((__FUNCTION__": got WM_DESTROY for hwnd(0x%x)", hwnd));
602	return 0;
603	case WM_NCHITTEST:
604	Log((__FUNCTION__": got WM_NCHITTEST for hwnd(0x%x)\n", hwnd));
605	return HTNOWHERE;
606	default:
607	break;
608	}
609
610	return DefWindowProc(hwnd, uMsg, wParam, lParam);
611	}
612
613	#define VBOXRRWND_NAME "VBoxRrWnd"
614
615	static HRESULT vboxRrWndCreate(HWND *phWnd)
616	{
617	HRESULT hr = S_OK;
618	HINSTANCE hInstance = (HINSTANCE)GetModuleHandle(NULL);
619	/* Register the Window Class. */
620	WNDCLASS wc;
621	if (!GetClassInfo(hInstance, VBOXRRWND_NAME, &wc))
622	{
623	wc.style = 0;//CS_OWNDC;
624	wc.lpfnWndProc = vboxRrWndProc;
625	wc.cbClsExtra = 0;
626	wc.cbWndExtra = 0;
627	wc.hInstance = hInstance;
628	wc.hIcon = NULL;
629	wc.hCursor = NULL;
630	wc.hbrBackground = NULL;
631	wc.lpszMenuName = NULL;
632	wc.lpszClassName = VBOXRRWND_NAME;
633	if (!RegisterClass(&wc))
634	{
635	DWORD winErr = GetLastError();
636	Log((__FUNCTION__": RegisterClass failed, winErr(%d)\n", winErr));
637	hr = E_FAIL;
638	}
639	}
640
641	if (hr == S_OK)
642	{
643	HWND hWnd = CreateWindowEx (WS_EX_TOOLWINDOW,
644	VBOXRRWND_NAME, VBOXRRWND_NAME,
645	WS_POPUP \| WS_CLIPSIBLINGS \| WS_CLIPCHILDREN \| WS_DISABLED,
646	-100, -100,
647	10, 10,
648	NULL, //GetDesktopWindow() /* hWndParent */,
649	NULL /* hMenu */,
650	hInstance,
651	NULL /* lpParam */);
652	Assert(hWnd);
653	if (hWnd)
654	{
655	*phWnd = hWnd;
656	}
657	else
658	{
659	DWORD winErr = GetLastError();
660	Log((__FUNCTION__": CreateWindowEx failed, winErr(%d)\n", winErr));
661	hr = E_FAIL;
662	}
663	}
664
665	return hr;
666	}
667
668	static HRESULT vboxRrWndDestroy(HWND hWnd)
669	{
670	BOOL bResult = DestroyWindow(hWnd);
671	if (bResult)
672	return S_OK;
673
674	DWORD winErr = GetLastError();
675	Log((__FUNCTION__": DestroyWindow failed, winErr(%d) for hWnd(0x%x)\n", winErr, hWnd));
676
677	return HRESULT_FROM_WIN32(winErr);
678	}
679
680	static HRESULT vboxRrWndInit()
681	{
682	PVBOXRR pMon = &g_VBoxRr;
683	return vboxRrWndCreate(&pMon->hWnd);
684	}
685
686	HRESULT vboxRrWndTerm()
687	{
688	PVBOXRR pMon = &g_VBoxRr;
689	HRESULT tmpHr = vboxRrWndDestroy(pMon->hWnd);
690	Assert(tmpHr == S_OK);
691
692	HINSTANCE hInstance = (HINSTANCE)GetModuleHandle(NULL);
693	UnregisterClass(VBOXRRWND_NAME, hInstance);
694
695	return S_OK;
696	}
697
698	#define WM_VBOXRR_INIT_QUIT (WM_APP+2)
699
700	HRESULT vboxRrRun()
701	{
702	PVBOXRR pMon = &g_VBoxRr;
703	MSG Msg;
704
705	HRESULT hr = S_FALSE;
706
707	PeekMessage(&Msg,
708	NULL /* HWND hWnd */,
709	WM_USER /* UINT wMsgFilterMin */,
710	WM_USER /* UINT wMsgFilterMax */,
711	PM_NOREMOVE);
712
713	do
714	{
715	BOOL bResult = GetMessage(&Msg,
716	0 /HWND hWnd/,
717	0 /UINT wMsgFilterMin/,
718	0 /UINT wMsgFilterMax/
719	);
720
721	if(!bResult) /* WM_QUIT was posted */
722	{
723	hr = S_FALSE;
724	Log(("VBoxTray: GetMessage returned FALSE\n"));
725	VBoxRrRetryStop();
726	break;
727	}
728
729	if(bResult == -1) /* error occurred */
730	{
731	DWORD winEr = GetLastError();
732	hr = HRESULT_FROM_WIN32(winEr);
733	Assert(0);
734	/* just ensure we never return success in this case */
735	Assert(hr != S_OK);
736	Assert(hr != S_FALSE);
737	if (hr == S_OK \|\| hr == S_FALSE)
738	hr = E_FAIL;
739	Log(("VBoxTray: GetMessage returned -1, err %d\n", winEr));
740	VBoxRrRetryStop();
741	break;
742	}
743
744	switch (Msg.message)
745	{
746	case WM_VBOXRR_INIT_QUIT:
747	case WM_CLOSE:
748	{
749	Log(("VBoxTray: closing Rr %d\n", Msg.message));
750	VBoxRrRetryStop();
751	PostQuitMessage(0);
752	break;
753	}
754	default:
755	TranslateMessage(&Msg);
756	DispatchMessage(&Msg);
757	break;
758	}
759	} while (1);
760	return 0;
761	}
762
763	static DWORD WINAPI vboxRrRunnerThread(void *pvUser)
764	{
765	PVBOXRR pMon = &g_VBoxRr;
766
767	BOOL bRc = SetEvent(pMon->hEvent);
768	if (!bRc)
769	{
770	DWORD winErr = GetLastError();
771	Log((__FUNCTION__": SetEvent failed, winErr = (%d)", winErr));
772	HRESULT tmpHr = HRESULT_FROM_WIN32(winErr);
773	Assert(tmpHr != S_OK);
774	}
775
776	HRESULT hr = vboxRrWndInit();
777	Assert(hr == S_OK);
778	if (hr == S_OK)
779	{
780	hr = vboxRrRun();
781	Assert(hr == S_OK);
782
783	vboxRrWndTerm();
784	}
785
786	return 0;
787	}
788
789	HRESULT VBoxRrInit()
790	{
791	HRESULT hr = E_FAIL;
792	PVBOXRR pMon = &g_VBoxRr;
793	memset(pMon, 0, sizeof (*pMon));
794
795	InitializeCriticalSection(&pMon->CritSect);
796
797	pMon->hEvent = CreateEvent(NULL, /* LPSECURITY_ATTRIBUTES lpEventAttributes*/
798	TRUE, /* BOOL bManualReset*/
799	FALSE, /* BOOL bInitialState */
800	NULL /* LPCTSTR lpName */
801	);
802	if (pMon->hEvent)
803	{
804	pMon->hThread = CreateThread(NULL /* LPSECURITY_ATTRIBUTES lpThreadAttributes */,
805	0 /* SIZE_T dwStackSize */,
806	vboxRrRunnerThread,
807	pMon,
808	0 /* DWORD dwCreationFlags */,
809	&pMon->idThread);
810	if (pMon->hThread)
811	{
812	DWORD dwResult = WaitForSingleObject(pMon->hEvent, INFINITE);
813	if (dwResult == WAIT_OBJECT_0)
814	return S_OK;
815	else
816	{
817	Log(("WaitForSingleObject failed!"));
818	hr = E_FAIL;
819	}
820	}
821	else
822	{
823	DWORD winErr = GetLastError();
824	Log((__FUNCTION__": CreateThread failed, winErr = (%d)", winErr));
825	hr = HRESULT_FROM_WIN32(winErr);
826	Assert(hr != S_OK);
827	}
828	CloseHandle(pMon->hEvent);
829	}
830	else
831	{
832	DWORD winErr = GetLastError();
833	Log((__FUNCTION__": CreateEvent failed, winErr = (%d)", winErr));
834	hr = HRESULT_FROM_WIN32(winErr);
835	Assert(hr != S_OK);
836	}
837
838	DeleteCriticalSection(&pMon->CritSect);
839
840	return hr;
841	}
842
843	VOID VBoxRrTerm()
844	{
845	HRESULT hr;
846	PVBOXRR pMon = &g_VBoxRr;
847	if (!pMon->hThread)
848	return;
849
850	BOOL bResult = PostThreadMessage(pMon->idThread, WM_VBOXRR_INIT_QUIT, 0, 0);
851	DWORD winErr;
852	if (bResult
853	\|\| (winErr = GetLastError()) == ERROR_INVALID_THREAD_ID) /* <- could be that the thread is terminated */
854	{
855	DWORD dwErr = WaitForSingleObject(pMon->hThread, INFINITE);
856	if (dwErr == WAIT_OBJECT_0)
857	{
858	hr = S_OK;
859	}
860	else
861	{
862	winErr = GetLastError();
863	hr = HRESULT_FROM_WIN32(winErr);
864	}
865	}
866	else
867	{
868	hr = HRESULT_FROM_WIN32(winErr);
869	}
870
871	DeleteCriticalSection(&pMon->CritSect);
872
873	CloseHandle(pMon->hThread);
874	pMon->hThread = 0;
875	CloseHandle(pMon->hEvent);
876	pMon->hThread = 0;
877	}
878	/**/
879
880	typedef struct VBOXDISPIF_WDDM_INTERNAL
881	{
882	PCVBOXDISPIF pIf;
883	} VBOXDISPIF_WDDM_INTERNAL, *PVBOXDISPIF_WDDM_INTERNAL;
884
885	static VBOXDISPIF_WDDM_INTERNAL g_VBoxDispIfWddm;
886
887	static BOOL vboxDispIfWddmValidateResize(DISPLAY_DEVICE paDisplayDevices, DEVMODE paDeviceModes, UINT cDevModes)
888	{
889	DISPLAY_DEVICE DisplayDevice;
890	int i = 0;
891	UINT cMatched = 0;
892	DEVMODE CurDevMode, RegDevMode;
893	for (int i = 0; ; ++i)
894	{
895	ZeroMemory(&DisplayDevice, sizeof(DISPLAY_DEVICE));
896	DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
897
898	if (!EnumDisplayDevices (NULL, i, &DisplayDevice, 0))
899	break;
900
901	Log(("VBoxTray: vboxDispIfValidateResize: [%d(%d)] %s\n", i, cMatched, DisplayDevice.DeviceName));
902
903	BOOL bFetchDevice = FALSE;
904
905	if (DisplayDevice.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
906	{
907	Log(("VBoxTray: vboxDispIfValidateResize: Found primary device. err %d\n", GetLastError ()));
908	bFetchDevice = TRUE;
909	}
910	else if (!(DisplayDevice.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER))
911	{
912
913	Log(("VBoxTray: vboxDispIfValidateResize: Found secondary device. err %d\n", GetLastError ()));
914	bFetchDevice = TRUE;
915	}
916
917	if (bFetchDevice)
918	{
919	if (cMatched >= cDevModes)
920	{
921	Log(("VBoxTray: vboxDispIfValidateResize: %d >= %d\n", cDevModes, cMatched));
922	return FALSE;
923	}
924
925	/* First try to get the video mode stored in registry (ENUM_REGISTRY_SETTINGS).
926	* A secondary display could be not active at the moment and would not have
927	* a current video mode (ENUM_CURRENT_SETTINGS).
928	*/
929	ZeroMemory(&RegDevMode, sizeof(RegDevMode));
930	RegDevMode.dmSize = sizeof(DEVMODE);
931	if (!EnumDisplaySettings((LPSTR)DisplayDevice.DeviceName,
932	ENUM_REGISTRY_SETTINGS, &RegDevMode))
933	{
934	Log(("VBoxTray: vboxDispIfValidateResize: EnumDisplaySettings error %d\n", GetLastError ()));
935	return FALSE;
936	}
937
938	/* with Win8 WDDM Display-only driver, it seems like sometimes we get an auto-resize setting being stored in registry, although current settings do not match */
939	ZeroMemory(&CurDevMode, sizeof(CurDevMode));
940	CurDevMode.dmSize = sizeof(CurDevMode);
941	if (!EnumDisplaySettings((LPSTR)DisplayDevice.DeviceName,
942	ENUM_CURRENT_SETTINGS, &CurDevMode))
943	{
944	/* ENUM_CURRENT_SETTINGS returns FALSE when the display is not active:
945	* for example a disabled secondary display */
946	Log(("VBoxTray: vboxDispIfValidateResize: EnumDisplaySettings(ENUM_CURRENT_SETTINGS) error %d\n", GetLastError ()));
947	return FALSE;
948	}
949
950	/* No ENUM_REGISTRY_SETTINGS yet. Seen on Vista after installation.
951	* Get the current video mode then.
952	*/
953	if ( RegDevMode.dmPelsWidth != 0
954	&& RegDevMode.dmPelsHeight == 0)
955	{
956	if (CurDevMode.dmBitsPerPel != RegDevMode.dmBitsPerPel
957	\|\| CurDevMode.dmPelsWidth != RegDevMode.dmPelsWidth
958	\|\| CurDevMode.dmPelsHeight != RegDevMode.dmPelsHeight
959	\|\| CurDevMode.dmPosition.x != RegDevMode.dmPosition.x
960	\|\| CurDevMode.dmPosition.y != RegDevMode.dmPosition.y)
961	{
962	Log(("VBoxTray: vboxDispIfValidateResize: current settings do not match registry settings, trating as no-match"));
963	return FALSE;
964	}
965	}
966
967	UINT j = 0;
968	for (; j < cDevModes; ++j)
969	{
970	if (!strncmp(DisplayDevice.DeviceName, paDisplayDevices[j].DeviceName, RT_ELEMENTS(CurDevMode.dmDeviceName)))
971	{
972	if (paDeviceModes[j].dmBitsPerPel != CurDevMode.dmBitsPerPel
973	\|\| (paDeviceModes[j].dmPelsWidth & 0xfff8) != (CurDevMode.dmPelsWidth & 0xfff8)
974	\|\| (paDeviceModes[j].dmPelsHeight & 0xfff8) != (CurDevMode.dmPelsHeight & 0xfff8)
975	\|\| (paDeviceModes[j].dmPosition.x & 0xfff8) != (CurDevMode.dmPosition.x & 0xfff8)
976	\|\| (paDeviceModes[j].dmPosition.y & 0xfff8) != (CurDevMode.dmPosition.y & 0xfff8)
977	\|\| (paDisplayDevices[j].StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP) != (DisplayDevice.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP))
978	{
979	return FALSE;
980	}
981	break;
982	}
983	}
984
985	if (j == cDevModes)
986	return FALSE;
987
988	++cMatched;
989	}
990	}
991
992	return cMatched == cDevModes;
993	}
994
995	static DWORD vboxDispIfWddmValidateFixResize(PCVBOXDISPIF const pIf, DISPLAY_DEVICE paDisplayDevices, DEVMODE paDeviceModes, UINT cDevModes)
996	{
997	if (vboxDispIfWddmValidateResize(paDisplayDevices, paDeviceModes, cDevModes))
998	return NO_ERROR;
999
1000	LONG status = DISP_CHANGE_SUCCESSFUL;
1001
1002	/* now try to resize in a "regular" way */
1003	/* Assign the new rectangles to displays. */
1004	for (UINT i = 0; i < cDevModes; i++)
1005	{
1006	/* On Vista one must specify DM_BITSPERPEL.
1007	* Note that the current mode dmBitsPerPel is already in the DEVMODE structure.
1008	*/
1009	paDeviceModes[i].dmFields = DM_POSITION \| DM_PELSHEIGHT \| DM_PELSWIDTH \| DM_BITSPERPEL;
1010
1011	Log(("VBoxTray: ResizeDisplayDevice: pfnChangeDisplaySettingsEx %x: %dx%dx%d at %d,%d\n",
1012	pIf->modeData.wddm.pfnChangeDisplaySettingsEx,
1013	paDeviceModes[i].dmPelsWidth,
1014	paDeviceModes[i].dmPelsHeight,
1015	paDeviceModes[i].dmBitsPerPel,
1016	paDeviceModes[i].dmPosition.x,
1017	paDeviceModes[i].dmPosition.y));
1018
1019	/* the miniport might have been adjusted the display mode stuff,
1020	* adjust the paDeviceModes[i] by picking the closest available one */
1021	// DEVMODE AdjustedMode = paDeviceModes[i];
1022	// vboxDispIfAdjustMode(&paDisplayDevices[i], &AdjustedMode);
1023
1024	LONG tmpStatus = pIf->modeData.wddm.pfnChangeDisplaySettingsEx((LPSTR)paDisplayDevices[i].DeviceName,
1025	&paDeviceModes[i], NULL, CDS_NORESET \| CDS_UPDATEREGISTRY, NULL);
1026	Log(("VBoxTray: ResizeDisplayDevice: ChangeDisplaySettingsEx position status %d, err %d\n", tmpStatus, GetLastError ()));
1027	if (tmpStatus != DISP_CHANGE_SUCCESSFUL)
1028	{
1029	status = tmpStatus;
1030	}
1031	}
1032
1033	/* A second call to ChangeDisplaySettings updates the monitor. */
1034	LONG tmpStatus = pIf->modeData.wddm.pfnChangeDisplaySettingsEx(NULL, NULL, NULL, 0, NULL);
1035	Log(("VBoxTray: ResizeDisplayDevice: ChangeDisplaySettings update status %d\n", status));
1036	if (tmpStatus == DISP_CHANGE_SUCCESSFUL)
1037	{
1038	if (status == DISP_CHANGE_SUCCESSFUL)
1039	{
1040	Log(("VBoxTray: resize succeeded\n"));
1041	return NO_ERROR;
1042	}
1043	}
1044	else
1045	{
1046	if (status == DISP_CHANGE_SUCCESSFUL)
1047	status = tmpStatus;
1048	}
1049
1050	if (status == DISP_CHANGE_FAILED)
1051	{
1052	Log(("VBoxTray: DISP_CHANGE_FAILED, retrying..\n"));
1053	return ERROR_RETRY;
1054	}
1055
1056	Log(("VBoxTray: resize failed with status %d\n", status));
1057
1058	return ERROR_GEN_FAILURE;
1059	}
1060
1061	static DWORD vboxDispIfWddmInit(PCVBOXDISPIF pIf)
1062	{
1063	memset(&g_VBoxDispIfWddm, 0, sizeof (g_VBoxDispIfWddm));
1064	g_VBoxDispIfWddm.pIf = pIf;
1065	HRESULT hr = VBoxRrInit();
1066	if (SUCCEEDED(hr))
1067	{
1068	return ERROR_SUCCESS;
1069	}
1070	return ERROR_GEN_FAILURE;
1071	}
1072
1073	static void vboxDispIfWddmTerm(PCVBOXDISPIF pIf)
1074	{
1075	VBoxRrTerm();
1076	memset(&g_VBoxDispIfWddm, 0, sizeof (g_VBoxDispIfWddm));
1077	}
1078
1079	typedef struct VBOXDISPIF_REINITMODES_OP
1080	{
1081	VBOXDISPIFESCAPE_REINITVIDEOMODESBYMASK EscData;
1082	} VBOXDISPIF_REINITMODES_OP, *PVBOXDISPIF_REINITMODES_OP;
1083
1084	static DECLCALLBACK(BOOLEAN) vboxDispIfReninitModesWDDMOp(PCVBOXDISPIF pIf, D3DKMT_HANDLE hAdapter, DISPLAY_DEVICE *pDev, PVOID pContext)
1085	{
1086	PVBOXDISPIF_REINITMODES_OP pData = (PVBOXDISPIF_REINITMODES_OP)pContext;
1087	VBOXDISPIFWDDM_ESCAPEOP_CONTEXT Ctx = {0};
1088	Ctx.pEscape = &pData->EscData.EscapeHdr;
1089	Ctx.cbData = sizeof (pData->EscData) - sizeof (pData->EscData.EscapeHdr);
1090	// Ctx.EscapeFlags.HardwareAccess = 0;
1091	DWORD err = vboxDispIfWDDMAdapterOp(pIf, -1 /* iDisplay, -1 means primary */, vboxDispIfEscapeWDDMOp, &Ctx);
1092	if (err == NO_ERROR)
1093	{
1094	if (!Ctx.Status)
1095	err = NO_ERROR;
1096	else
1097	{
1098	if (Ctx.Status == 0xC00000BBL) /* not supported */
1099	err = ERROR_NOT_SUPPORTED;
1100	else
1101	err = ERROR_GEN_FAILURE;
1102	Log((__FUNCTION__": pfnD3DKMTEscape failed, Status (0x%x)\n", Ctx.Status));
1103	}
1104	}
1105	else
1106	Log((__FUNCTION__": vboxDispIfWDDMAdapterOp failed, err (%d)\n", err));
1107
1108	D3DKMT_POLLDISPLAYCHILDREN PollData = {0};
1109	PollData.hAdapter = hAdapter;
1110	PollData.NonDestructiveOnly = 1;
1111	NTSTATUS Status = pIf->modeData.wddm.pfnD3DKMTPollDisplayChildren(&PollData);
1112	if (Status != 0)
1113	{
1114	Log((__FUNCTION__": pfnD3DKMTPollDisplayChildren failed, Status (0x%x)\n", Status));
1115	}
1116	return TRUE;
1117	}
1118
1119	static DWORD vboxDispIfReninitModesWDDM(PCVBOXDISPIF const pIf, uint8_t *pScreenIdMask, BOOL fReconnectDisplaysOnChange)
1120	{
1121	VBOXDISPIF_REINITMODES_OP OpData = {0};
1122	OpData.EscData.EscapeHdr.escapeCode = VBOXESC_REINITVIDEOMODESBYMASK;
1123	if (fReconnectDisplaysOnChange)
1124	OpData.EscData.EscapeHdr.u32CmdSpecific = VBOXWDDM_REINITVIDEOMODESBYMASK_F_RECONNECT_DISPLAYS_ON_CHANGE;
1125
1126	memcpy(OpData.EscData.ScreenMask, pScreenIdMask, sizeof (OpData.EscData.ScreenMask));
1127
1128	DWORD err = vboxDispIfWDDMAdapterOp(pIf, -1 /* iDisplay, -1 means primary */, vboxDispIfReninitModesWDDMOp, &OpData);
1129	return err;
1130	}
1131
1132	DWORD vboxDispIfCancelPendingResizeWDDM(PCVBOXDISPIF const pIf)
1133	{
1134	Log(("VBoxTray: cancelling pending resize\n"));
1135	VBoxRrRetryStop();
1136	return NO_ERROR;
1137	}
1138
1139	static DWORD vboxDispIfAdjustMode(DISPLAY_DEVICE pDisplayDevice, DEVMODE pDeviceMode)
1140	{
1141	DEVMODE CurMode;
1142	DEVMODE BestMatchMode;
1143	DWORD i = 0;
1144	int64_t diffWH = INT64_MAX;
1145	int diffBpp = INT32_MAX;
1146	for (; ; ++i)
1147	{
1148	CurMode.dmSize = sizeof (CurMode);
1149	CurMode.dmDriverExtra = 0;
1150
1151	if (!EnumDisplaySettings(pDisplayDevice->DeviceName, i, &CurMode))
1152	break;
1153
1154	if (CurMode.dmPelsWidth == pDeviceMode->dmPelsWidth
1155	&& CurMode.dmPelsHeight == pDeviceMode->dmPelsHeight
1156	&& CurMode.dmBitsPerPel == pDeviceMode->dmBitsPerPel)
1157	{
1158	Log(("Exact match found"));
1159	*pDeviceMode = CurMode;
1160	return NO_ERROR;
1161	}
1162
1163	int diffCurrW = RT_ABS((int)(CurMode.dmPelsWidth - pDeviceMode->dmPelsWidth));
1164	int diffCurrH = RT_ABS((int)(CurMode.dmPelsHeight - pDeviceMode->dmPelsHeight));
1165	int diffCurrBpp = RT_ABS((int)(CurMode.dmBitsPerPel - pDeviceMode->dmBitsPerPel)
1166	- 1 /* <- to make higher bpp take precedence over lower ones */
1167	);
1168
1169	int64_t diffCurrHW = (int64_t)diffCurrWdiffCurrW + (int64_t)diffCurrHdiffCurrH;
1170
1171	if (i == 0
1172	\|\| diffCurrHW < diffWH
1173	\|\| (diffCurrHW == diffWH && diffCurrBpp < diffBpp))
1174	{
1175	/* first run */
1176	BestMatchMode = CurMode;
1177	diffWH = diffCurrHW;
1178	diffBpp = diffCurrBpp;
1179	continue;
1180	}
1181	}
1182
1183	if (i == 0)
1184	{
1185	Log(("No modes found!"));
1186	return NO_ERROR;
1187	}
1188
1189	*pDeviceMode = BestMatchMode;
1190	return NO_ERROR;
1191	}
1192
1193	static DWORD vboxDispIfAdjustModeValues(PCVBOXDISPIF const pIf, DISPLAY_DEVICE pDisplayDevice, DEVMODE pDeviceMode)
1194	{
1195	VBOXDISPIFESCAPE_ADJUSTVIDEOMODES Data = {0};
1196	Data.EscapeHdr.escapeCode = VBOXESC_REINITVIDEOMODESBYMASK;
1197	Data.EscapeHdr.u32CmdSpecific = 1;
1198	Data.aScreenInfos[0].Mode.Id =
1199	Data.aScreenInfos[0].Mode.Width = pDeviceMode->dmPelsWidth;
1200	Data.aScreenInfos[0].Mode.Height = pDeviceMode->dmPelsHeight;
1201	Data.aScreenInfos[0].Mode.BitsPerPixel = pDeviceMode->dmBitsPerPel;
1202	if (pDeviceMode->dmPosition.x != 0 \|\| pDeviceMode->dmPosition.y != 0) {
1203	Data.aScreenInfos[0].Mode.PosX = pDeviceMode->dmPosition.x;
1204	Data.aScreenInfos[0].Mode.PosY = pDeviceMode->dmPosition.y;
1205	}
1206	DWORD err = vboxDispIfEscapeWDDM(pIf, &Data.EscapeHdr, sizeof (Data) - sizeof (Data.EscapeHdr), TRUE);
1207	if (err != NO_ERROR)
1208	{
1209	Log((__FUNCTION__": VBoxDispIfEscape failed with err (%d)\n", err));
1210	}
1211	return err;
1212	}
1213
1214	DWORD vboxDispIfResizeModesWDDM(PCVBOXDISPIF const pIf, UINT iChangedMode, DISPLAY_DEVICE paDisplayDevices, DEVMODE paDeviceModes, UINT cDevModes)
1215	{
1216	UINT cbVidPnInfo = VBOXWDDM_RECOMMENDVIDPN_SIZE(cDevModes);
1217	PVBOXWDDM_RECOMMENDVIDPN pVidPnInfo = (PVBOXWDDM_RECOMMENDVIDPN)alloca(cbVidPnInfo);
1218	pVidPnInfo->cScreenInfos = cDevModes;
1219	D3DKMT_HANDLE hAdapter = NULL;
1220	NTSTATUS Status;
1221	DWORD winEr = NO_ERROR;
1222	UINT i = 0;
1223
1224	Log(("VBoxTray: vboxDispIfResizeModesWDDM\n"));
1225	VBoxRrRetryStop();
1226
1227	for (; i < cDevModes; i++)
1228	{
1229	PVBOXWDDM_RECOMMENDVIDPN_SCREEN_INFO pInfo = &pVidPnInfo->aScreenInfos[i];
1230	D3DKMT_OPENADAPTERFROMHDC OpenAdapterData = {0};
1231	OpenAdapterData.hDc = CreateDC(NULL, paDisplayDevices[i].DeviceName, NULL, NULL);
1232	if (!OpenAdapterData.hDc)
1233	{
1234	winEr = GetLastError();
1235	Log(("VBoxTray: WARNING: Failed to get dc for display device %s, winEr %d\n", paDisplayDevices[i].DeviceName, winEr));
1236	break;
1237	}
1238
1239	Status = pIf->modeData.wddm.pfnD3DKMTOpenAdapterFromHdc(&OpenAdapterData);
1240	Assert(!Status);
1241	if (Status)
1242	{
1243	winEr = ERROR_GEN_FAILURE;
1244	Log(("VBoxTray: WARNING: Failed to open adapter from dc, Status 0x%x\n", Status));
1245	break;
1246	}
1247
1248	pInfo->Id = OpenAdapterData.VidPnSourceId;
1249	pInfo->Width = paDeviceModes[i].dmPelsWidth;
1250	pInfo->Height = paDeviceModes[i].dmPelsHeight;
1251	pInfo->BitsPerPixel = paDeviceModes[i].dmBitsPerPel;
1252
1253	if (i == iChangedMode && (paDeviceModes[i].dmPosition.x != 0 \|\| paDeviceModes[i].dmPosition.y != 0) )
1254	{
1255	/* change position values only if not equal to 0*/
1256	LogRel(("VBoxTray: (WDDM) Change Position x=%d*y=%d Display Device ID=%d\n", paDeviceModes[i].dmPosition.x, paDeviceModes[i].dmPosition.y, i));
1257	pInfo->PosX = paDeviceModes[i].dmPosition.x;
1258	pInfo->PosY = paDeviceModes[i].dmPosition.y;
1259	}
1260
1261	if (!hAdapter)
1262	{
1263	hAdapter = OpenAdapterData.hAdapter;
1264	}
1265	else
1266	{
1267	D3DKMT_CLOSEADAPTER ClosaAdapterData = {0};
1268	ClosaAdapterData.hAdapter = OpenAdapterData.hAdapter;
1269	Status = pIf->modeData.wddm.pfnD3DKMTCloseAdapter(&ClosaAdapterData);
1270	if (Status)
1271	Log(("VBoxTray: WARNING: Failed to close adapter, Status 0x%x\n", Status));
1272	}
1273	}
1274
1275	BOOL fAbleToInvalidateVidPn = FALSE;
1276
1277	if (winEr == NO_ERROR)
1278	{
1279	Assert(hAdapter);
1280
1281	D3DKMT_INVALIDATEACTIVEVIDPN IAVidPnData = {0};
1282	IAVidPnData.hAdapter = hAdapter;
1283	IAVidPnData.pPrivateDriverData = pVidPnInfo;
1284	IAVidPnData.PrivateDriverDataSize = cbVidPnInfo;
1285
1286	DWORD winEr = NO_ERROR;
1287	Status = pIf->modeData.wddm.pfnD3DKMTInvalidateActiveVidPn(&IAVidPnData);
1288	Assert(!Status);
1289	if (Status)
1290	{
1291	Log((__FUNCTION__": pfnD3DKMTInvalidateActiveVidPn failed, Status (0x%x)\n", Status));
1292	winEr = ERROR_GEN_FAILURE;
1293	}
1294	else
1295	{
1296	fAbleToInvalidateVidPn = TRUE;
1297	}
1298	}
1299
1300	if (hAdapter)
1301	{
1302	D3DKMT_CLOSEADAPTER ClosaAdapterData = {0};
1303	ClosaAdapterData.hAdapter = hAdapter;
1304	Status = pIf->modeData.wddm.pfnD3DKMTCloseAdapter(&ClosaAdapterData);
1305	if (Status)
1306	Log(("VBoxTray: WARNING: Failed to close adapter[2], Status 0x%x\n", Status));
1307	}
1308
1309	// for (i = 0; i < cDevModes; i++)
1310	// {
1311	// vboxDispIfAdjustMode(&paDisplayDevices[i], &paDeviceModes[i]);
1312	// }
1313
1314	if (fAbleToInvalidateVidPn)
1315	{
1316	Log(("VBoxTray: Invalidating VidPn Worked!\n"));
1317	OSVERSIONINFO OSinfo;
1318	OSinfo.dwOSVersionInfoSize = sizeof (OSinfo);
1319	GetVersionEx (&OSinfo);
1320	/* for win 7 and above calling ChangeDisplaySettingsEx to resize a specific display, is having
1321	* a side affect for enabling all the monitors including the disabled ones. So using
1322	* WDDM win 7 APIs to resize the display for OSes Win7 and above.
1323	*/
1324	if (OSinfo.dwMajorVersion >= 6 && OSinfo.dwMinorVersion >= 1)
1325	winEr = vboxDispIfWddmResizeDisplay(pIf, iChangedMode, paDisplayDevices, paDeviceModes, cDevModes);
1326	else
1327	winEr = vboxDispIfWddmValidateFixResize(pIf, paDisplayDevices, paDeviceModes, cDevModes);
1328
1329	}
1330	else
1331	{
1332	Log(("VBoxTray: Falling back to monitor mode reinit\n"));
1333	/* fallback impl needed for display-only driver
1334	* since D3DKMTInvalidateActiveVidPn is not available for WDDM > 1.0:
1335	* make the driver invalidate VidPn,
1336	* which is done by emulating a monitor re-plug currently */
1337	uint8_t ScreenMask[VBOXWDDM_SCREENMASK_SIZE] = {0};
1338	ASMBitSet(ScreenMask, iChangedMode);
1339	vboxDispIfReninitModesWDDM(pIf, ScreenMask, TRUE);
1340
1341	winEr = vboxDispIfWddmValidateFixResize(pIf, paDisplayDevices, paDeviceModes, cDevModes);
1342
1343	Assert(winEr == NO_ERROR);
1344	}
1345
1346	if (winEr == ERROR_RETRY)
1347	{
1348	VBoxRrRetrySchedule(pIf, paDisplayDevices, paDeviceModes, cDevModes);
1349	/* just pretend everything is fine so far */
1350	winEr = NO_ERROR;
1351	}
1352
1353	return winEr;
1354	}
1355
1356	DWORD vboxDispIfWddmEnableDisplay(PCVBOXDISPIF const pIf, UINT Id, bool fEnabled)
1357	{
1358	DISPLAYCONFIG_PATH_INFO *pPathInfoArray;
1359	DISPLAYCONFIG_MODE_INFO *pModeInfoArray;
1360	UINT numPathArrayElements = 0;
1361	UINT numModeInfoArrayElements = 0;
1362	ULONG dwStatus;
1363
1364	dwStatus = gCtx.pfnGetDisplayConfigBufferSizes(fEnabled ? QDC_ALL_PATHS : QDC_ONLY_ACTIVE_PATHS, &numPathArrayElements, &numModeInfoArrayElements);
1365	if (dwStatus != ERROR_SUCCESS)
1366	{
1367	LogFlow(("VBoxTray: (WDDM) Failed GetDisplayConfigBufferSizes \n"));
1368	return dwStatus;
1369	}
1370	pPathInfoArray = (DISPLAYCONFIG_PATH_INFO )malloc(numPathArrayElements sizeof(DISPLAYCONFIG_PATH_INFO));
1371	if (!pPathInfoArray)
1372	return ERROR_OUTOFMEMORY;
1373	pModeInfoArray = (DISPLAYCONFIG_MODE_INFO )malloc(numModeInfoArrayElements sizeof(DISPLAYCONFIG_MODE_INFO));
1374	if (!pModeInfoArray )
1375	{
1376	if (pPathInfoArray)
1377	{
1378	free(pPathInfoArray);
1379	}
1380	return ERROR_OUTOFMEMORY;
1381	}
1382	dwStatus = gCtx.pfnQueryDisplayConfig(fEnabled ? QDC_ALL_PATHS : QDC_ONLY_ACTIVE_PATHS, &numPathArrayElements, pPathInfoArray,&numModeInfoArrayElements, pModeInfoArray, NULL);
1383	if (dwStatus != ERROR_SUCCESS)
1384	{
1385	LogFlow(("VBoxTray: (WDDM) Failed QueryDisplayConfig \n"));
1386	free(pPathInfoArray);
1387	free(pModeInfoArray);
1388	return dwStatus;
1389	}
1390	for (unsigned int i=0; i < numPathArrayElements; ++i)
1391	{
1392	LogRel(("Sourceid= %d and targetid = %d\n", pPathInfoArray[i].sourceInfo.id, pPathInfoArray[i].targetInfo.id));
1393	if (pPathInfoArray[i].sourceInfo.id == Id)
1394	{
1395	if (fEnabled)
1396	{
1397	LogRel(("VBoxTray: (WDDM) Enable the Display Device i =%d \n", i));
1398	pPathInfoArray[i].flags=DISPLAYCONFIG_PATH_ACTIVE;
1399	break;
1400	}
1401	else
1402	{
1403	LogRel(("VBoxTray: (WDDM) Disable the Display Device Path ID=%d and Sourceid=%d\n", i, pPathInfoArray[i].sourceInfo.id));
1404	pPathInfoArray[i].flags=0;
1405	break;
1406	}
1407	}
1408	}
1409	dwStatus = gCtx.pfnSetDisplayConfig(numPathArrayElements, pPathInfoArray, numModeInfoArrayElements, pModeInfoArray, (SDC_APPLY \| SDC_SAVE_TO_DATABASE\| SDC_ALLOW_CHANGES \| SDC_USE_SUPPLIED_DISPLAY_CONFIG));
1410	if (dwStatus != ERROR_SUCCESS)
1411	{
1412	free(pPathInfoArray);
1413	free(pModeInfoArray);
1414	LogRel(("VBoxTray:(WDDM) Failed to Enable/ disable the monitor."));
1415	return dwStatus;
1416	}
1417	free(pPathInfoArray);
1418	free(pModeInfoArray);
1419	return ERROR_SUCCESS;
1420	}
1421
1422	DWORD vboxDispIfWddmResizeDisplay(PCVBOXDISPIF const pIf, UINT Id, DISPLAY_DEVICE * paDisplayDevices, DEVMODE *paDeviceMode, UINT devModes)
1423	{
1424	DISPLAYCONFIG_PATH_INFO *pPathInfoArray;
1425	DISPLAYCONFIG_MODE_INFO *pModeInfoArray;
1426	UINT numPathArrayElements = 0;
1427	UINT numModeInfoArrayElements = 0;
1428	ULONG dwStatus;
1429
1430	dwStatus = gCtx.pfnGetDisplayConfigBufferSizes(QDC_ONLY_ACTIVE_PATHS, &numPathArrayElements, &numModeInfoArrayElements);
1431	if (dwStatus != ERROR_SUCCESS)
1432	{
1433	LogFlow(("VBoxTray: (WDDM) Failed GetDisplayConfigBufferSizes \n"));
1434	return dwStatus;
1435	}
1436	pPathInfoArray = (DISPLAYCONFIG_PATH_INFO )malloc(numPathArrayElements sizeof(DISPLAYCONFIG_PATH_INFO));
1437	if (!pPathInfoArray)
1438	return ERROR_OUTOFMEMORY;
1439	pModeInfoArray = (DISPLAYCONFIG_MODE_INFO )malloc(numModeInfoArrayElements sizeof(DISPLAYCONFIG_MODE_INFO));
1440	if (!pModeInfoArray )
1441	{
1442	if (pPathInfoArray)
1443	{
1444	free(pPathInfoArray);
1445	}
1446	return ERROR_OUTOFMEMORY;
1447	}
1448	dwStatus = gCtx.pfnQueryDisplayConfig( QDC_ONLY_ACTIVE_PATHS, &numPathArrayElements, pPathInfoArray,&numModeInfoArrayElements, pModeInfoArray, NULL);
1449	if (dwStatus != ERROR_SUCCESS)
1450	{
1451	LogFlow(("VBoxTray: (WDDM) Failed QueryDisplayConfig \n"));
1452	free(pPathInfoArray);
1453	free(pModeInfoArray);
1454	return dwStatus;
1455	}
1456	for (unsigned int i=0; i < numPathArrayElements; ++i)
1457	{
1458	LogRel(("Sourceid= %d and targetid = %d\n", pPathInfoArray[i].sourceInfo.id, pPathInfoArray[i].targetInfo.id));
1459	if (pPathInfoArray[i].sourceInfo.id == Id)
1460	{
1461	LogRel(("VBoxTray: (Resize) Enable the Display Device i =%d \n", i));
1462	int test = pPathInfoArray[i].sourceInfo.modeInfoIdx;
1463	pModeInfoArray[test].sourceMode.width = paDeviceMode[Id].dmPelsWidth;
1464	pModeInfoArray[test].sourceMode.height = paDeviceMode[Id].dmPelsHeight;
1465	pModeInfoArray[test].sourceMode.position.x = paDeviceMode[Id].dmPosition.x;
1466	pModeInfoArray[test].sourceMode.position.y = paDeviceMode[Id].dmPosition.y;
1467	break;
1468	}
1469	}
1470	dwStatus = gCtx.pfnSetDisplayConfig(numPathArrayElements, pPathInfoArray, numModeInfoArrayElements, pModeInfoArray,(SDC_APPLY \| SDC_SAVE_TO_DATABASE\| SDC_ALLOW_CHANGES \| SDC_USE_SUPPLIED_DISPLAY_CONFIG));
1471	if (dwStatus != ERROR_SUCCESS)
1472	{
1473	free(pPathInfoArray);
1474	free(pModeInfoArray);
1475	LogRel(("VBoxTray:(WDDM) Failed to Enable/ disable the monitor."));
1476	return dwStatus;
1477	}
1478	free(pPathInfoArray);
1479	free(pModeInfoArray);
1480	return ERROR_SUCCESS;
1481	}
1482
1483	#endif /* VBOX_WITH_WDDM */
1484
1485	DWORD VBoxDispIfResizeModes(PCVBOXDISPIF const pIf, UINT iChangedMode, DISPLAY_DEVICE paDisplayDevices, DEVMODE paDeviceModes, UINT cDevModes)
1486	{
1487	switch (pIf->enmMode)
1488	{
1489	case VBOXDISPIF_MODE_XPDM_NT4:
1490	return ERROR_NOT_SUPPORTED;
1491	case VBOXDISPIF_MODE_XPDM:
1492	return ERROR_NOT_SUPPORTED;
1493	#ifdef VBOX_WITH_WDDM
1494	case VBOXDISPIF_MODE_WDDM:
1495	return vboxDispIfResizeModesWDDM(pIf, iChangedMode, paDisplayDevices, paDeviceModes, cDevModes);
1496	#endif
1497	default:
1498	Log((__FUNCTION__": unknown mode (%d)\n", pIf->enmMode));
1499	return ERROR_INVALID_PARAMETER;
1500	}
1501	}
1502
1503	DWORD VBoxDispIfCancelPendingResize(PCVBOXDISPIF const pIf)
1504	{
1505	switch (pIf->enmMode)
1506	{
1507	case VBOXDISPIF_MODE_XPDM_NT4:
1508	return NO_ERROR;
1509	case VBOXDISPIF_MODE_XPDM:
1510	return NO_ERROR;
1511	#ifdef VBOX_WITH_WDDM
1512	case VBOXDISPIF_MODE_WDDM:
1513	return vboxDispIfCancelPendingResizeWDDM(pIf);
1514	#endif
1515	default:
1516	Log((__FUNCTION__": unknown mode (%d)\n", pIf->enmMode));
1517	return ERROR_INVALID_PARAMETER;
1518	}
1519	}
1520
1521	DWORD VBoxDispIfReninitModes(PCVBOXDISPIF const pIf, uint8_t *pScreenIdMask, BOOL fReconnectDisplaysOnChange)
1522	{
1523	switch (pIf->enmMode)
1524	{
1525	case VBOXDISPIF_MODE_XPDM_NT4:
1526	return ERROR_NOT_SUPPORTED;
1527	case VBOXDISPIF_MODE_XPDM:
1528	return ERROR_NOT_SUPPORTED;
1529	#ifdef VBOX_WITH_WDDM
1530	case VBOXDISPIF_MODE_WDDM:
1531	return vboxDispIfReninitModesWDDM(pIf, pScreenIdMask, fReconnectDisplaysOnChange);
1532	#endif
1533	default:
1534	Log((__FUNCTION__": unknown mode (%d)\n", pIf->enmMode));
1535	return ERROR_INVALID_PARAMETER;
1536	}
1537	}
1538
1539	static DWORD vboxDispIfSwitchToXPDM_NT4(PVBOXDISPIF pIf)
1540	{
1541	return NO_ERROR;
1542	}
1543
1544	static DWORD vboxDispIfSwitchToXPDM(PVBOXDISPIF pIf)
1545	{
1546	DWORD err = NO_ERROR;
1547	AssertBreakpoint();
1548	OSVERSIONINFO OSinfo;
1549	OSinfo.dwOSVersionInfoSize = sizeof (OSinfo);
1550	GetVersionEx (&OSinfo);
1551	if (OSinfo.dwMajorVersion >= 5)
1552	{
1553	HMODULE hUser = GetModuleHandle("USER32");
1554	if (NULL != hUser)
1555	{
1556	bool bSupported = true;
1557	(uintptr_t )&pIf->modeData.xpdm.pfnChangeDisplaySettingsEx = (uintptr_t)GetProcAddress(hUser, "ChangeDisplaySettingsExA");
1558	Log((__FUNCTION__": pfnChangeDisplaySettingsEx = %p\n", pIf->modeData.xpdm.pfnChangeDisplaySettingsEx));
1559	bSupported &= !!(pIf->modeData.xpdm.pfnChangeDisplaySettingsEx);
1560
1561	if (!bSupported)
1562	{
1563	Log((__FUNCTION__": pfnChangeDisplaySettingsEx function pointer failed to initialize\n"));
1564	err = ERROR_NOT_SUPPORTED;
1565	}
1566	}
1567	else
1568	{
1569	Log((__FUNCTION__": failed to get USER32 handle, err (%d)\n", GetLastError()));
1570	err = ERROR_NOT_SUPPORTED;
1571	}
1572	}
1573	else
1574	{
1575	Log((__FUNCTION__": can not switch to VBOXDISPIF_MODE_XPDM, because os is not >= w2k\n"));
1576	err = ERROR_NOT_SUPPORTED;
1577	}
1578
1579	return err;
1580	}
1581
1582	DWORD VBoxDispIfSwitchMode(PVBOXDISPIF pIf, VBOXDISPIF_MODE enmMode, VBOXDISPIF_MODE *penmOldMode)
1583	{
1584	/* @todo: may need to addd synchronization in case we want to change modes dynamically
1585	* i.e. currently the mode is supposed to be initialized once on service initialization */
1586	if (penmOldMode)
1587	*penmOldMode = pIf->enmMode;
1588
1589	if (enmMode == pIf->enmMode)
1590	return NO_ERROR;
1591
1592	#ifdef VBOX_WITH_WDDM
1593	if (pIf->enmMode == VBOXDISPIF_MODE_WDDM)
1594	{
1595	vboxDispIfWddmTerm(pIf);
1596	}
1597	#endif
1598
1599	DWORD err = NO_ERROR;
1600	switch (enmMode)
1601	{
1602	case VBOXDISPIF_MODE_XPDM_NT4:
1603	Log((__FUNCTION__": request to switch to VBOXDISPIF_MODE_XPDM_NT4\n"));
1604	err = vboxDispIfSwitchToXPDM_NT4(pIf);
1605	if (err == NO_ERROR)
1606	{
1607	Log((__FUNCTION__": successfully switched to XPDM_NT4 mode\n"));
1608	pIf->enmMode = VBOXDISPIF_MODE_XPDM_NT4;
1609	}
1610	else
1611	Log((__FUNCTION__": failed to switch to XPDM_NT4 mode, err (%d)\n", err));
1612	break;
1613	case VBOXDISPIF_MODE_XPDM:
1614	Log((__FUNCTION__": request to switch to VBOXDISPIF_MODE_XPDM\n"));
1615	err = vboxDispIfSwitchToXPDM(pIf);
1616	if (err == NO_ERROR)
1617	{
1618	Log((__FUNCTION__": successfully switched to XPDM mode\n"));
1619	pIf->enmMode = VBOXDISPIF_MODE_XPDM;
1620	}
1621	else
1622	Log((__FUNCTION__": failed to switch to XPDM mode, err (%d)\n", err));
1623	break;
1624	#ifdef VBOX_WITH_WDDM
1625	case VBOXDISPIF_MODE_WDDM:
1626	{
1627	Log((__FUNCTION__": request to switch to VBOXDISPIF_MODE_WDDM\n"));
1628	err = vboxDispIfSwitchToWDDM(pIf);
1629	if (err == NO_ERROR)
1630	{
1631	Log((__FUNCTION__": successfully switched to WDDM mode\n"));
1632	pIf->enmMode = VBOXDISPIF_MODE_WDDM;
1633	}
1634	else
1635	Log((__FUNCTION__": failed to switch to WDDM mode, err (%d)\n", err));
1636	break;
1637	}
1638	#endif
1639	default:
1640	err = ERROR_INVALID_PARAMETER;
1641	break;
1642	}
1643	return err;
1644	}

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source: vbox/trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxDispIf.cpp@ 44824

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