VBoxDisplay.cpp@ 68437

Last change on this file since 68437 was 68437, checked in by vboxsync, 7 years ago
VBoxTray: Use VbglR3 APIs for everything. Untested.
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File size: 37.3 KB

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1	/* $Id: VBoxDisplay.cpp 68437 2017-08-17 10:18:32Z vboxsync $ */
2	/** @file
3	* VBoxSeamless - Display notifications.
4	*/
5
6	/*
7	* Copyright (C) 2006-2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17	#include "VBoxTray.h"
18	#include "VBoxHelpers.h"
19	#include "VBoxSeamless.h"
20
21	#include <malloc.h>
22
23	#include <iprt/assert.h>
24	#ifdef VBOX_WITH_WDDM
25	# include <iprt/asm.h>
26	#endif
27
28	#ifdef DEBUG
29	# define LOG_ENABLED
30	# define LOG_GROUP LOG_GROUP_DEFAULT
31	#endif
32	#include <VBox/log.h>
33	#include <VBox/VMMDev.h>
34
35	#include <VBoxDisplay.h>
36	#include <VBoxHook.h>
37
38
39
40	typedef struct _VBOXDISPLAYCONTEXT
41	{
42	const VBOXSERVICEENV *pEnv;
43	BOOL fAnyX;
44	/** ChangeDisplaySettingsEx does not exist in NT. ResizeDisplayDevice uses the function. */
45	LONG (WINAPI * pfnChangeDisplaySettingsEx)(LPCTSTR lpszDeviceName, LPDEVMODE lpDevMode, HWND hwnd, DWORD dwflags, LPVOID lParam);
46	/** EnumDisplayDevices does not exist in NT. isVBoxDisplayDriverActive et al. are using these functions. */
47	BOOL (WINAPI * pfnEnumDisplayDevices)(IN LPCSTR lpDevice, IN DWORD iDevNum, OUT PDISPLAY_DEVICEA lpDisplayDevice, IN DWORD dwFlags);
48	/ Display driver interface, XPDM - WDDM abstraction see VBOXDISPIF definitions above */
49	VBOXDISPIF dispIf;
50	} VBOXDISPLAYCONTEXT, *PVBOXDISPLAYCONTEXT;
51
52	static VBOXDISPLAYCONTEXT g_Ctx = { 0 };
53
54	typedef enum
55	{
56	VBOXDISPLAY_DRIVER_TYPE_UNKNOWN = 0,
57	VBOXDISPLAY_DRIVER_TYPE_XPDM = 1,
58	VBOXDISPLAY_DRIVER_TYPE_WDDM = 2
59	} VBOXDISPLAY_DRIVER_TYPE;
60
61	static VBOXDISPLAY_DRIVER_TYPE getVBoxDisplayDriverType (VBOXDISPLAYCONTEXT *pCtx);
62
63	static DECLCALLBACK(int) VBoxDisplayInit(const PVBOXSERVICEENV pEnv, void **ppInstance)
64	{
65	LogFlowFuncEnter();
66
67	PVBOXDISPLAYCONTEXT pCtx = &g_Ctx; /** @todo r=andy Use instance data via service lookup (add void pInstance). /
68	AssertPtr(pCtx);
69
70	OSVERSIONINFO OSinfo; /** @todo r=andy Use VBoxTray's g_dwMajorVersion? */
71	OSinfo.dwOSVersionInfoSize = sizeof(OSinfo);
72	GetVersionEx (&OSinfo);
73
74	int rc;
75	HMODULE hUser = GetModuleHandle("user32.dll"); /** @todo r=andy Use RTLdrXXX and friends. */
76
77	pCtx->pEnv = pEnv;
78
79	if (NULL == hUser)
80	{
81	LogFlowFunc(("Could not get module handle of USER32.DLL!\n"));
82	rc = VERR_NOT_IMPLEMENTED;
83	}
84	else if (OSinfo.dwMajorVersion >= 5) /* APIs available only on W2K and up. */
85	{
86	/** @todo r=andy Use RTLdrXXX and friends. */
87	/** @todo r=andy No unicode version available? */
88	(uintptr_t )&pCtx->pfnChangeDisplaySettingsEx = (uintptr_t)GetProcAddress(hUser, "ChangeDisplaySettingsExA");
89	LogFlowFunc(("pfnChangeDisplaySettingsEx = %p\n", pCtx->pfnChangeDisplaySettingsEx));
90
91	(uintptr_t )&pCtx->pfnEnumDisplayDevices = (uintptr_t)GetProcAddress(hUser, "EnumDisplayDevicesA");
92	LogFlowFunc(("pfnEnumDisplayDevices = %p\n", pCtx->pfnEnumDisplayDevices));
93
94	#ifdef VBOX_WITH_WDDM
95	if (OSinfo.dwMajorVersion >= 6)
96	{
97	/* This is Vista and up, check if we need to switch the display driver if to WDDM mode. */
98	LogFlowFunc(("this is Windows Vista and up\n"));
99	VBOXDISPLAY_DRIVER_TYPE enmType = getVBoxDisplayDriverType(pCtx);
100	if (enmType == VBOXDISPLAY_DRIVER_TYPE_WDDM)
101	{
102	LogFlowFunc(("WDDM driver is installed, switching display driver if to WDDM mode\n"));
103	/* This is hacky, but the most easiest way. */
104	VBOXDISPIF_MODE enmMode = (OSinfo.dwMajorVersion == 6 && OSinfo.dwMinorVersion == 0) ? VBOXDISPIF_MODE_WDDM : VBOXDISPIF_MODE_WDDM_W7;
105	DWORD dwErr = VBoxDispIfSwitchMode(const_cast<PVBOXDISPIF>(&pEnv->dispIf), enmMode, NULL /* old mode, we don't care about it */);
106	if (dwErr == NO_ERROR)
107	{
108	LogFlowFunc(("DispIf successfully switched to WDDM mode\n"));
109	rc = VINF_SUCCESS;
110	}
111	else
112	{
113	LogFlowFunc(("Failed to switch DispIf to WDDM mode, error (%d)\n", dwErr));
114	rc = RTErrConvertFromWin32(dwErr);
115	}
116	}
117	else
118	rc = VINF_SUCCESS;
119	}
120	else
121	rc = VINF_SUCCESS;
122	#endif
123	}
124	else if (OSinfo.dwMajorVersion <= 4) /* Windows NT 4.0. */
125	{
126	/* Nothing to do here yet. */
127	/** @todo r=andy Has this been tested? */
128	rc = VINF_SUCCESS;
129	}
130	else /* Unsupported platform. */
131	{
132	LogFlowFunc(("Warning: Display for platform not handled yet!\n"));
133	rc = VERR_NOT_IMPLEMENTED;
134	}
135
136	if (RT_SUCCESS(rc))
137	{
138	VBOXDISPIFESCAPE_ISANYX IsAnyX = { 0 };
139	IsAnyX.EscapeHdr.escapeCode = VBOXESC_ISANYX;
140	DWORD err = VBoxDispIfEscapeInOut(&pEnv->dispIf, &IsAnyX.EscapeHdr, sizeof(uint32_t));
141	if (err == NO_ERROR)
142	pCtx->fAnyX = !!IsAnyX.u32IsAnyX;
143	else
144	pCtx->fAnyX = TRUE;
145
146	*ppInstance = pCtx;
147	}
148
149	LogFlowFuncLeaveRC(rc);
150	return rc;
151	}
152
153	static DECLCALLBACK(void) VBoxDisplayDestroy(void *pInstance)
154	{
155	RT_NOREF(pInstance);
156	return;
157	}
158
159	static VBOXDISPLAY_DRIVER_TYPE getVBoxDisplayDriverType(PVBOXDISPLAYCONTEXT pCtx)
160	{
161	VBOXDISPLAY_DRIVER_TYPE enmType = VBOXDISPLAY_DRIVER_TYPE_UNKNOWN;
162
163	if (pCtx->pfnEnumDisplayDevices)
164	{
165	INT devNum = 0;
166	DISPLAY_DEVICE dispDevice;
167	FillMemory(&dispDevice, sizeof(DISPLAY_DEVICE), 0);
168	dispDevice.cb = sizeof(DISPLAY_DEVICE);
169
170	LogFlowFunc(("getVBoxDisplayDriverType: Checking for active VBox display driver (W2K+) ...\n"));
171
172	while (EnumDisplayDevices(NULL,
173	devNum,
174	&dispDevice,
175	0))
176	{
177	LogFlowFunc(("getVBoxDisplayDriverType: DevNum:%d\nName:%s\nString:%s\nID:%s\nKey:%s\nFlags=%08X\n\n",
178	devNum,
179	&dispDevice.DeviceName[0],
180	&dispDevice.DeviceString[0],
181	&dispDevice.DeviceID[0],
182	&dispDevice.DeviceKey[0],
183	dispDevice.StateFlags));
184
185	if (dispDevice.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
186	{
187	LogFlowFunc(("getVBoxDisplayDriverType: Primary device\n"));
188
189	/* WDDM driver can now have multiple incarnations,
190	* if the driver name contains VirtualBox, and does NOT match the XPDM name,
191	* assume it to be WDDM */
192	if (strcmp(&dispDevice.DeviceString[0], "VirtualBox Graphics Adapter") == 0)
193	enmType = VBOXDISPLAY_DRIVER_TYPE_XPDM;
194	else if (strstr(&dispDevice.DeviceString[0], "VirtualBox"))
195	enmType = VBOXDISPLAY_DRIVER_TYPE_WDDM;
196
197	break;
198	}
199
200	FillMemory(&dispDevice, sizeof(DISPLAY_DEVICE), 0);
201
202	dispDevice.cb = sizeof(DISPLAY_DEVICE);
203
204	devNum++;
205	}
206	}
207	else /* This must be NT 4 or something really old, so don't use EnumDisplayDevices() here ... */
208	{
209	LogFlowFunc(("getVBoxDisplayDriverType: Checking for active VBox display driver (NT or older) ...\n"));
210
211	DEVMODE tempDevMode;
212	ZeroMemory (&tempDevMode, sizeof (tempDevMode));
213	tempDevMode.dmSize = sizeof(DEVMODE);
214	EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &tempDevMode); /* Get current display device settings */
215
216	/* Check for the short name, because all long stuff would be truncated */
217	if (strcmp((char*)&tempDevMode.dmDeviceName[0], "VBoxDisp") == 0)
218	enmType = VBOXDISPLAY_DRIVER_TYPE_XPDM;
219	}
220
221	return enmType;
222	}
223
224	/** @todo r=andy The "display", "seamless" (and VBoxCaps facility in VBoxTray.cpp indirectly) is using this.
225	* Add a PVBOXDISPLAYCONTEXT here for properly getting the display (XPDM/WDDM) abstraction interfaces. */
226	DWORD EnableAndResizeDispDev(DEVMODE paDeviceModes, DISPLAY_DEVICE paDisplayDevices,
227	DWORD totalDispNum, UINT Id, DWORD aWidth, DWORD aHeight,
228	DWORD aBitsPerPixel, LONG aPosX, LONG aPosY, BOOL fEnabled, BOOL fExtDispSup)
229	{
230	DISPLAY_DEVICE displayDeviceTmp;
231	DISPLAY_DEVICE displayDevice;
232	DEVMODE deviceMode;
233	DWORD dwStatus = DISP_CHANGE_SUCCESSFUL;
234	DWORD iter ;
235
236	PVBOXDISPLAYCONTEXT pCtx = &g_Ctx; /* See todo above. */
237
238	deviceMode = paDeviceModes[Id];
239	displayDevice = paDisplayDevices[Id];
240
241	for (iter = 0; iter < totalDispNum; iter++)
242	{
243	if (iter != 0 && iter != Id && !(paDisplayDevices[iter].StateFlags & DISPLAY_DEVICE_ACTIVE))
244	{
245	LogRel(("Display: Initially disabling monitor with ID=%ld; total monitor count is %ld\n", iter, totalDispNum));
246	DEVMODE deviceModeTmp;
247	ZeroMemory(&deviceModeTmp, sizeof(DEVMODE));
248	deviceModeTmp.dmSize = sizeof(DEVMODE);
249	deviceModeTmp.dmFields = DM_PELSWIDTH \| DM_PELSHEIGHT \| DM_BITSPERPEL \| DM_POSITION
250	\| DM_DISPLAYFREQUENCY \| DM_DISPLAYFLAGS ;
251	displayDeviceTmp = paDisplayDevices[iter];
252	pCtx->pfnChangeDisplaySettingsEx(displayDeviceTmp.DeviceName, &deviceModeTmp, NULL,
253	(CDS_UPDATEREGISTRY \| CDS_NORESET), NULL);
254	}
255	}
256
257	if (fExtDispSup) /* Extended Display Support possible*/
258	{
259	if (fEnabled)
260	{
261	/* Special case for enabling the secondary monitor. */
262	if(!(displayDevice.StateFlags & DISPLAY_DEVICE_ACTIVE))
263	{
264	LogRel(("Display [ID=%ld, name='%s']: Is a secondary monitor and disabled -- enabling it\n", Id, displayDevice.DeviceName));
265	deviceMode.dmPosition.x = paDeviceModes[0].dmPelsWidth;
266	deviceMode.dmPosition.y = 0;
267	deviceMode.dmBitsPerPel = 32;
268	OSVERSIONINFO OSinfo;
269	OSinfo.dwOSVersionInfoSize = sizeof (OSinfo);
270	GetVersionEx (&OSinfo);
271
272	if (OSinfo.dwMajorVersion < 6)
273	/* dont any more flags here as, only DM_POISITON is used to enable the secondary display */
274	deviceMode.dmFields = DM_POSITION;
275	else /* for win 7 and above */
276	/* for vista and above DM_BITSPERPEL is necessary */
277	deviceMode.dmFields = DM_BITSPERPEL \| DM_DISPLAYFLAGS \| DM_DISPLAYFREQUENCY \| DM_POSITION;
278
279	dwStatus = pCtx->pfnChangeDisplaySettingsEx((LPSTR)displayDevice.DeviceName,&deviceMode, NULL, (CDS_UPDATEREGISTRY \| CDS_NORESET), NULL);
280	/* A second call to ChangeDisplaySettings updates the monitor.*/
281	pCtx->pfnChangeDisplaySettingsEx(NULL, NULL, NULL,0, NULL);
282	}
283	else /* secondary monitor already enabled. Request to change the resolution or position. */
284	{
285	if (aWidth !=0 && aHeight != 0)
286	{
287	LogRel(("Display [ID=%ld, name='%s']: Changing resolution to %ldx%ld\n", Id, displayDevice.DeviceName, aWidth, aHeight));
288	deviceMode.dmFields = DM_PELSWIDTH \| DM_PELSHEIGHT \| DM_BITSPERPEL
289	\| DM_DISPLAYFREQUENCY \| DM_DISPLAYFLAGS;
290	deviceMode.dmPelsWidth = aWidth;
291	deviceMode.dmPelsHeight = aHeight;
292	deviceMode.dmBitsPerPel = aBitsPerPixel;
293	}
294	if (aPosX != 0 \|\| aPosY != 0)
295	{
296	LogRel(("Display [ID=%ld, name='%s']: Changing position to %ld,%ld\n", Id, displayDevice.DeviceName, aPosX, aPosY));
297	deviceMode.dmFields \|= DM_POSITION;
298	deviceMode.dmPosition.x = aPosX;
299	deviceMode.dmPosition.y = aPosY;
300	}
301	dwStatus = pCtx->pfnChangeDisplaySettingsEx((LPSTR)displayDevice.DeviceName,
302	&deviceMode, NULL, CDS_NORESET\|CDS_UPDATEREGISTRY, NULL);
303	/* A second call to ChangeDisplaySettings updates the monitor. */
304	pCtx->pfnChangeDisplaySettingsEx(NULL, NULL, NULL,0, NULL);
305	}
306	}
307	else /* Request is there to disable the monitor with ID = Id*/
308	{
309	LogRel(("Display [ID=%ld, name='%s']: Disalbing\n", Id, displayDevice.DeviceName));
310
311	DEVMODE deviceModeTmp;
312	ZeroMemory(&deviceModeTmp, sizeof(DEVMODE));
313	deviceModeTmp.dmSize = sizeof(DEVMODE);
314	deviceModeTmp.dmFields = DM_PELSWIDTH \| DM_PELSHEIGHT \| DM_BITSPERPEL \| DM_POSITION
315	\| DM_DISPLAYFREQUENCY \| DM_DISPLAYFLAGS ;
316	displayDeviceTmp = paDisplayDevices[Id];
317	dwStatus = pCtx->pfnChangeDisplaySettingsEx(displayDeviceTmp.DeviceName, &deviceModeTmp, NULL,
318	(CDS_UPDATEREGISTRY \| CDS_NORESET), NULL);
319	pCtx->pfnChangeDisplaySettingsEx(NULL, NULL, NULL,0, NULL);
320	}
321	}
322	return dwStatus;
323	}
324
325	DWORD VBoxDisplayGetCount(void)
326	{
327	DISPLAY_DEVICE DisplayDevice;
328
329	ZeroMemory(&DisplayDevice, sizeof(DISPLAY_DEVICE));
330	DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
331
332	/* Find out how many display devices the system has */
333	DWORD NumDevices = 0;
334	DWORD i = 0;
335	while (EnumDisplayDevices (NULL, i, &DisplayDevice, 0))
336	{
337	LogFlowFunc(("ResizeDisplayDevice: [%d] %s\n", i, DisplayDevice.DeviceName));
338
339	if (DisplayDevice.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
340	{
341	LogFlowFunc(("ResizeDisplayDevice: Found primary device. err %d\n", GetLastError ()));
342	NumDevices++;
343	}
344	else if (!(DisplayDevice.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER))
345	{
346
347	LogFlowFunc(("ResizeDisplayDevice: Found secondary device. err %d\n", GetLastError ()));
348	NumDevices++;
349	}
350
351	ZeroMemory(&DisplayDevice, sizeof(DisplayDevice));
352	DisplayDevice.cb = sizeof(DisplayDevice);
353	i++;
354	}
355
356	return NumDevices;
357	}
358
359	DWORD VBoxDisplayGetConfig(const DWORD NumDevices, DWORD pDevPrimaryNum, DWORD pNumDevices,
360	DISPLAY_DEVICE paDisplayDevices, DEVMODE paDeviceModes)
361	{
362	/* Fetch information about current devices and modes. */
363	DWORD DevNum = 0;
364	DWORD DevPrimaryNum = 0;
365
366	DISPLAY_DEVICE DisplayDevice;
367
368	ZeroMemory(&DisplayDevice, sizeof(DISPLAY_DEVICE));
369	DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
370
371	DWORD i = 0;
372	while (EnumDisplayDevices (NULL, i, &DisplayDevice, 0))
373	{
374	LogFlowFunc(("ResizeDisplayDevice: [%d(%d)] %s\n", i, DevNum, DisplayDevice.DeviceName));
375
376	BOOL bFetchDevice = FALSE;
377
378	if (DisplayDevice.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
379	{
380	LogFlowFunc(("ResizeDisplayDevice: Found primary device. err %d\n", GetLastError ()));
381	DevPrimaryNum = DevNum;
382	bFetchDevice = TRUE;
383	}
384	else if (!(DisplayDevice.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER))
385	{
386
387	LogFlowFunc(("ResizeDisplayDevice: Found secondary device. err %d\n", GetLastError ()));
388	bFetchDevice = TRUE;
389	}
390
391	if (bFetchDevice)
392	{
393	if (DevNum >= NumDevices)
394	{
395	LogFlowFunc(("ResizeDisplayDevice: %d >= %d\n", NumDevices, DevNum));
396	return ERROR_BUFFER_OVERFLOW;
397	}
398
399	paDisplayDevices[DevNum] = DisplayDevice;
400
401	/* First try to get the video mode stored in registry (ENUM_REGISTRY_SETTINGS).
402	* A secondary display could be not active at the moment and would not have
403	* a current video mode (ENUM_CURRENT_SETTINGS).
404	*/
405	ZeroMemory(&paDeviceModes[DevNum], sizeof(DEVMODE));
406	paDeviceModes[DevNum].dmSize = sizeof(DEVMODE);
407	if (!EnumDisplaySettings((LPSTR)DisplayDevice.DeviceName,
408	ENUM_REGISTRY_SETTINGS, &paDeviceModes[DevNum]))
409	{
410	LogFlowFunc(("ResizeDisplayDevice: EnumDisplaySettings error %d\n", GetLastError ()));
411	}
412
413	if ( paDeviceModes[DevNum].dmPelsWidth == 0
414	\|\| paDeviceModes[DevNum].dmPelsHeight == 0)
415	{
416	/* No ENUM_REGISTRY_SETTINGS yet. Seen on Vista after installation.
417	* Get the current video mode then.
418	*/
419	ZeroMemory(&paDeviceModes[DevNum], sizeof(DEVMODE));
420	paDeviceModes[DevNum].dmSize = sizeof(DEVMODE);
421	if (!EnumDisplaySettings((LPSTR)DisplayDevice.DeviceName,
422	ENUM_CURRENT_SETTINGS, &paDeviceModes[DevNum]))
423	{
424	/* ENUM_CURRENT_SETTINGS returns FALSE when the display is not active:
425	* for example a disabled secondary display.
426	* Do not return here, ignore the error and set the display info to 0x0x0.
427	*/
428	LogFlowFunc(("ResizeDisplayDevice: EnumDisplaySettings(ENUM_CURRENT_SETTINGS) error %d\n", GetLastError ()));
429	}
430	}
431
432
433	DevNum++;
434	}
435
436	ZeroMemory(&DisplayDevice, sizeof(DISPLAY_DEVICE));
437	DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
438	i++;
439	}
440
441	*pNumDevices = DevNum;
442	*pDevPrimaryNum = DevPrimaryNum;
443
444	return NO_ERROR;
445	}
446
447	static void ResizeDisplayDeviceNT4(DWORD dwNewXRes, DWORD dwNewYRes, DWORD dwNewBpp)
448	{
449	DEVMODE devMode;
450
451	RT_ZERO(devMode);
452	devMode.dmSize = sizeof(DEVMODE);
453
454	/* get the current screen setup */
455	if (!EnumDisplaySettings(NULL, ENUM_REGISTRY_SETTINGS, &devMode))
456	{
457	LogFlowFunc(("error from EnumDisplaySettings: %d\n", GetLastError()));
458	return;
459	}
460
461	LogFlowFunc(("Current mode: %d x %d x %d at %d,%d\n",
462	devMode.dmPelsWidth, devMode.dmPelsHeight, devMode.dmBitsPerPel, devMode.dmPosition.x, devMode.dmPosition.y));
463
464	/* Check whether a mode reset or a change is requested. */
465	if (dwNewXRes \|\| dwNewYRes \|\| dwNewBpp)
466	{
467	/* A change is requested.
468	* Set values which are not to be changed to the current values.
469	*/
470	if (!dwNewXRes)
471	dwNewXRes = devMode.dmPelsWidth;
472	if (!dwNewYRes)
473	dwNewYRes = devMode.dmPelsHeight;
474	if (!dwNewBpp)
475	dwNewBpp = devMode.dmBitsPerPel;
476	}
477	else
478	{
479	/* All zero values means a forced mode reset. Do nothing. */
480	LogFlowFunc(("Forced mode reset\n"));
481	}
482
483	/* Verify that the mode is indeed changed. */
484	if (devMode.dmPelsWidth == dwNewXRes
485	&& devMode.dmPelsHeight == dwNewYRes
486	&& devMode.dmBitsPerPel == dwNewBpp)
487	{
488	LogFlowFunc(("already at desired resolution\n"));
489	return;
490	}
491
492	// without this, Windows will not ask the miniport for its
493	// mode table but uses an internal cache instead
494	DEVMODE tempDevMode = { 0 };
495	tempDevMode.dmSize = sizeof(DEVMODE);
496	EnumDisplaySettings(NULL, 0xffffff, &tempDevMode);
497
498	/* adjust the values that are supposed to change */
499	if (dwNewXRes)
500	devMode.dmPelsWidth = dwNewXRes;
501	if (dwNewYRes)
502	devMode.dmPelsHeight = dwNewYRes;
503	if (dwNewBpp)
504	devMode.dmBitsPerPel = dwNewBpp;
505
506	LogFlowFunc(("setting new mode %d x %d, %d BPP\n",
507	devMode.dmPelsWidth, devMode.dmPelsHeight, devMode.dmBitsPerPel));
508
509	/* set the new mode */
510	LONG status = ChangeDisplaySettings(&devMode, CDS_UPDATEREGISTRY);
511	if (status != DISP_CHANGE_SUCCESSFUL)
512	{
513	LogFlowFunc(("error from ChangeDisplaySettings: %d\n", status));
514
515	if (status == DISP_CHANGE_BADMODE)
516	{
517	/* Our driver can not set the requested mode. Stop trying. */
518	return;
519	}
520	}
521	}
522
523	/* Returns TRUE to try again. */
524	/** @todo r=andy Why not using the VMMDevDisplayChangeRequestEx structure for all those parameters here? */
525	static BOOL ResizeDisplayDevice(PVBOXDISPLAYCONTEXT pCtx,
526	UINT Id, DWORD Width, DWORD Height, DWORD BitsPerPixel,
527	BOOL fEnabled, LONG dwNewPosX, LONG dwNewPosY, bool fChangeOrigin,
528	BOOL fExtDispSup)
529	{
530	BOOL fDispAlreadyEnabled = false; /* check whether the monitor with ID is already enabled. */
531	BOOL fModeReset = ( Width == 0 && Height == 0 && BitsPerPixel == 0
532	&& dwNewPosX == 0 && dwNewPosY == 0 && !fChangeOrigin);
533	DWORD dmFields = 0;
534
535	LogFlowFunc(("[%d] %dx%d at %d,%d fChangeOrigin %d fEnabled %d fExtDisSup %d\n",
536	Id, Width, Height, dwNewPosX, dwNewPosY, fChangeOrigin, fEnabled, fExtDispSup));
537
538	if (!pCtx->fAnyX)
539	Width &= 0xFFF8;
540
541	VBoxDispIfCancelPendingResize(&pCtx->pEnv->dispIf);
542
543	DWORD NumDevices = VBoxDisplayGetCount();
544
545	if (NumDevices == 0 \|\| Id >= NumDevices)
546	{
547	LogFlowFunc(("ResizeDisplayDevice: Requested identifier %d is invalid. err %d\n", Id, GetLastError ()));
548	return FALSE;
549	}
550
551	LogFlowFunc(("ResizeDisplayDevice: Found total %d devices. err %d\n", NumDevices, GetLastError ()));
552
553	DISPLAY_DEVICE paDisplayDevices = (DISPLAY_DEVICE )alloca (sizeof (DISPLAY_DEVICE) * NumDevices);
554	DEVMODE paDeviceModes = (DEVMODE )alloca (sizeof (DEVMODE) * NumDevices);
555	RECTL paRects = (RECTL )alloca (sizeof (RECTL) * NumDevices);
556	DWORD DevNum = 0;
557	DWORD DevPrimaryNum = 0;
558	DWORD dwStatus = VBoxDisplayGetConfig(NumDevices, &DevPrimaryNum, &DevNum, paDisplayDevices, paDeviceModes);
559	if (dwStatus != NO_ERROR)
560	{
561	LogFlowFunc(("ResizeDisplayDevice: VBoxGetDisplayConfig failed, %d\n", dwStatus));
562	return dwStatus;
563	}
564
565	if (NumDevices != DevNum)
566	LogFlowFunc(("ResizeDisplayDevice: NumDevices(%d) != DevNum(%d)\n", NumDevices, DevNum));
567
568	DWORD i;
569	for (i = 0; i < DevNum; ++i)
570	{
571	if (fExtDispSup)
572	{
573	LogRel(("Extended Display Support.\n"));
574	LogFlowFunc(("[%d] %dx%dx%d at %d,%d, dmFields 0x%x\n",
575	i,
576	paDeviceModes[i].dmPelsWidth,
577	paDeviceModes[i].dmPelsHeight,
578	paDeviceModes[i].dmBitsPerPel,
579	paDeviceModes[i].dmPosition.x,
580	paDeviceModes[i].dmPosition.y,
581	paDeviceModes[i].dmFields));
582	}
583	else
584	{
585	LogRel(("NO Ext Display Support \n"));
586	}
587
588	paRects[i].left = paDeviceModes[i].dmPosition.x;
589	paRects[i].top = paDeviceModes[i].dmPosition.y;
590	paRects[i].right = paDeviceModes[i].dmPosition.x + paDeviceModes[i].dmPelsWidth;
591	paRects[i].bottom = paDeviceModes[i].dmPosition.y + paDeviceModes[i].dmPelsHeight;
592	}
593
594	/* Keep a record if the display with ID is already active or not. */
595	if (paDisplayDevices[Id].StateFlags & DISPLAY_DEVICE_ACTIVE)
596	{
597	LogRel(("Display with ID=%d already enabled\n", Id));
598	fDispAlreadyEnabled = TRUE;
599	}
600
601	/* Width, height equal to 0 means that this value must be not changed.
602	* Update input parameters if necessary.
603	* Note: BitsPerPixel is taken into account later, when new rectangles
604	* are assigned to displays.
605	*/
606	if (Width == 0)
607	Width = paRects[Id].right - paRects[Id].left;
608	else
609	dmFields \|= DM_PELSWIDTH;
610
611	if (Height == 0)
612	Height = paRects[Id].bottom - paRects[Id].top;
613	else
614	dmFields \|= DM_PELSHEIGHT;
615
616	if (BitsPerPixel == 0)
617	BitsPerPixel = paDeviceModes[Id].dmBitsPerPel;
618	else
619	dmFields \|= DM_BITSPERPEL;
620
621	if (!fChangeOrigin)
622	{
623	/* Use existing position. */
624	dwNewPosX = paRects[Id].left;
625	dwNewPosY = paRects[Id].top;
626	LogFlowFunc(("existing dwNewPosX %d, dwNewPosY %d\n", dwNewPosX, dwNewPosY));
627	}
628
629	/* Always update the position.
630	* It is either explicitly requested or must be set to the existing position.
631	*/
632	dmFields \|= DM_POSITION;
633
634	/* Check whether a mode reset or a change is requested.
635	* Rectangle position is recalculated only if fEnabled is 1.
636	* For non extended supported modes (old Host VMs), fEnabled
637	* is always 1.
638	*/
639	/* Handled the case where previouseresolution of secondary monitor
640	* was for eg. 102476832 and monitor was in disabled state.
641	* User gives the command
642	* setvideomode 1024 768 32 1 yes.
643	* Now in this case the resolution request is same as previous one but
644	* monitor is going from disabled to enabled state so the below condition
645	* shour return false
646	* The below condition will only return true , if no mode reset has
647	* been requested AND fEnabled is 1 and fDispAlreadyEnabled is also 1 AND
648	* all rect conditions are true. Thus in this case nothing has to be done.
649	*/
650	if ( !fModeReset
651	&& (!fEnabled == !fDispAlreadyEnabled)
652	&& paRects[Id].left == dwNewPosX
653	&& paRects[Id].top == dwNewPosY
654	&& paRects[Id].right - paRects[Id].left == (LONG)Width
655	&& paRects[Id].bottom - paRects[Id].top == (LONG)Height
656	&& paDeviceModes[Id].dmBitsPerPel == BitsPerPixel)
657	{
658	LogRel(("Already at desired resolution. No Change.\n"));
659	return FALSE;
660	}
661
662	hlpResizeRect(paRects, NumDevices, DevPrimaryNum, Id,
663	fEnabled ? Width : 0, fEnabled ? Height : 0, dwNewPosX, dwNewPosY);
664	#ifdef Log
665	for (i = 0; i < NumDevices; i++)
666	{
667	LogFlowFunc(("ResizeDisplayDevice: [%d]: %d,%d %dx%d\n",
668	i, paRects[i].left, paRects[i].top,
669	paRects[i].right - paRects[i].left,
670	paRects[i].bottom - paRects[i].top));
671	}
672	#endif /* Log */
673
674	#ifdef VBOX_WITH_WDDM
675	VBOXDISPLAY_DRIVER_TYPE enmDriverType = getVBoxDisplayDriverType (pCtx);
676	if (enmDriverType == VBOXDISPLAY_DRIVER_TYPE_WDDM)
677	{
678	/* Assign the new rectangles to displays. */
679	for (i = 0; i < NumDevices; i++)
680	{
681	paDeviceModes[i].dmPosition.x = paRects[i].left;
682	paDeviceModes[i].dmPosition.y = paRects[i].top;
683	paDeviceModes[i].dmPelsWidth = paRects[i].right - paRects[i].left;
684	paDeviceModes[i].dmPelsHeight = paRects[i].bottom - paRects[i].top;
685
686	if (i == Id)
687	paDeviceModes[i].dmBitsPerPel = BitsPerPixel;
688
689	paDeviceModes[i].dmFields \|= dmFields;
690
691	/* On Vista one must specify DM_BITSPERPEL.
692	* Note that the current mode dmBitsPerPel is already in the DEVMODE structure.
693	*/
694	if (!(paDeviceModes[i].dmFields & DM_BITSPERPEL))
695	{
696	LogFlowFunc(("no DM_BITSPERPEL\n"));
697	paDeviceModes[i].dmFields \|= DM_BITSPERPEL;
698	paDeviceModes[i].dmBitsPerPel = 32;
699	}
700
701	LogFlowFunc(("ResizeDisplayDevice: pfnChangeDisplaySettingsEx %x: %dx%dx%d at %d,%d fields 0x%X\n",
702	pCtx->pfnChangeDisplaySettingsEx,
703	paDeviceModes[i].dmPelsWidth,
704	paDeviceModes[i].dmPelsHeight,
705	paDeviceModes[i].dmBitsPerPel,
706	paDeviceModes[i].dmPosition.x,
707	paDeviceModes[i].dmPosition.y,
708	paDeviceModes[i].dmFields));
709	}
710
711	LogFlowFunc(("Request to resize the displa\n"));
712	DWORD err = VBoxDispIfResizeModes(&pCtx->pEnv->dispIf, Id, fEnabled, fExtDispSup, paDisplayDevices, paDeviceModes, DevNum);
713	if (err != ERROR_RETRY)
714	{
715	if (err == NO_ERROR)
716	LogFlowFunc(("VBoxDispIfResizeModes succeeded\n"));
717	else
718	LogFlowFunc(("Failure VBoxDispIfResizeModes (%d)\n", err));
719	return FALSE;
720	}
721
722	LogFlowFunc(("ResizeDisplayDevice: RETRY requested\n"));
723	return TRUE;
724	}
725	#endif
726	/* Without this, Windows will not ask the miniport for its
727	* mode table but uses an internal cache instead.
728	*/
729	for (i = 0; i < NumDevices; i++)
730	{
731	DEVMODE tempDevMode;
732	ZeroMemory (&tempDevMode, sizeof (tempDevMode));
733	tempDevMode.dmSize = sizeof(DEVMODE);
734	EnumDisplaySettings((LPSTR)paDisplayDevices[i].DeviceName, 0xffffff, &tempDevMode);
735	LogFlowFunc(("ResizeDisplayDevice: EnumDisplaySettings last error %d\n", GetLastError ()));
736	}
737
738	/* Assign the new rectangles to displays. */
739	for (i = 0; i < NumDevices; i++)
740	{
741	paDeviceModes[i].dmPosition.x = paRects[i].left;
742	paDeviceModes[i].dmPosition.y = paRects[i].top;
743	paDeviceModes[i].dmPelsWidth = paRects[i].right - paRects[i].left;
744	paDeviceModes[i].dmPelsHeight = paRects[i].bottom - paRects[i].top;
745
746	/* On Vista one must specify DM_BITSPERPEL.
747	* Note that the current mode dmBitsPerPel is already in the DEVMODE structure.
748	*/
749	paDeviceModes[i].dmFields = DM_POSITION \| DM_PELSHEIGHT \| DM_PELSWIDTH \| DM_BITSPERPEL;
750
751	if ( i == Id
752	&& BitsPerPixel != 0)
753	{
754	/* Change dmBitsPerPel if requested. */
755	paDeviceModes[i].dmBitsPerPel = BitsPerPixel;
756	}
757
758	LogFlowFunc(("ResizeDisplayDevice: pfnChangeDisplaySettingsEx Current MonitorId=%d: %dx%dx%d at %d,%d\n",
759	i,
760	paDeviceModes[i].dmPelsWidth,
761	paDeviceModes[i].dmPelsHeight,
762	paDeviceModes[i].dmBitsPerPel,
763	paDeviceModes[i].dmPosition.x,
764	paDeviceModes[i].dmPosition.y));
765
766	LONG status = pCtx->pfnChangeDisplaySettingsEx((LPSTR)paDisplayDevices[i].DeviceName,
767	&paDeviceModes[i], NULL, CDS_NORESET \| CDS_UPDATEREGISTRY, NULL);
768	LogFlowFunc(("ResizeDisplayDevice: ChangeDisplaySettingsEx position status %d, err %d\n", status, GetLastError()));
769	NOREF(status);
770	}
771
772	LogFlowFunc(("Enable And Resize Device. Id = %d, Width=%d Height=%d, dwNewPosX = %d, dwNewPosY = %d fEnabled=%d & fExtDispSupport = %d \n",
773	Id, Width, Height, dwNewPosX, dwNewPosY, fEnabled, fExtDispSup));
774	dwStatus = EnableAndResizeDispDev(paDeviceModes, paDisplayDevices, DevNum, Id, Width, Height, BitsPerPixel,
775	dwNewPosX, dwNewPosY, fEnabled, fExtDispSup);
776	if (dwStatus == DISP_CHANGE_SUCCESSFUL \|\| dwStatus == DISP_CHANGE_BADMODE)
777	{
778	/* Successfully set new video mode or our driver can not set
779	* the requested mode. Stop trying.
780	*/
781	return FALSE;
782	}
783	/* Retry the request. */
784	return TRUE;
785	}
786
787	/**
788	* Thread function to wait for and process display change requests.
789	*/
790	static DECLCALLBACK(int) VBoxDisplayWorker(void pvInstance, bool volatile pfShutdown)
791	{
792	AssertPtr(pvInstance);
793	PVBOXDISPLAYCONTEXT pCtx = (PVBOXDISPLAYCONTEXT)pvInstance;
794	AssertPtr(pCtx->pEnv);
795	LogFlowFunc(("pvInstance=%p\n", pvInstance));
796
797	/*
798	* Tell the control thread that it can continue
799	* spawning services.
800	*/
801	RTThreadUserSignal(RTThreadSelf());
802
803	int rc = VbglR3CtlFilterMask(VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST \| VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED, 0 /fNot/);
804	if (RT_FAILURE(rc))
805	{
806	LogFlowFunc(("VbglR3CtlFilterMask(mask,0): %Rrc\n", rc));
807	return rc;
808	}
809
810	PostMessage(g_hwndToolWindow, WM_VBOX_GRAPHICS_SUPPORTED, 0, 0);
811
812	VBoxDispIfResizeStarted(&pCtx->pEnv->dispIf);
813
814	for (;;)
815	{
816	/*
817	* Wait for a display change event, checking for shutdown both before and after.
818	*/
819	if (*pfShutdown)
820	{
821	rc = VINF_SUCCESS;
822	break;
823	}
824
825	uint32_t fEvents = 0;
826	rc = VbglR3WaitEvent(VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST \| VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED, 1000 /ms/, &fEvents);
827
828	if (*pfShutdown)
829	{
830	rc = VINF_SUCCESS;
831	break;
832	}
833
834	if (RT_SUCCESS(rc))
835	{
836	if (fEvents & VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST)
837	{
838	LogFlowFunc(("going to get display change information\n"));
839
840	/*
841	* We got at least one event. (bird: What does that mean actually? The driver wakes us up immediately upon
842	* receiving the event. Or are we refering to mouse & display? In the latter case it's misleading.)
843	*
844	* Read the requested resolution and try to set it until success.
845	* New events will not be seen but a new resolution will be read in
846	* this poll loop.
847	*
848	* Note! The interface we're using here was added in VBox 4.2.4. As of 2017-08-16, this
849	* version has been unsupported for a long time and we therefore don't bother
850	* implementing fallbacks using VMMDevDisplayChangeRequest2 and VMMDevDisplayChangeRequest.
851	*/
852	uint32_t cx = 0;
853	uint32_t cy = 0;
854	uint32_t cBits = 0;
855	uint32_t iDisplay = 0;
856	uint32_t cxOrigin = 0;
857	uint32_t cyOrigin = 0;
858	bool fChangeOrigin = false;
859	bool fEnabled = false;
860	rc = VbglR3GetDisplayChangeRequest(&cx, &cy, &cBits, &iDisplay, &cxOrigin, &cyOrigin, &fEnabled, &fChangeOrigin,
861	true /fAck/);
862	if (RT_SUCCESS(rc))
863	{
864	/* Try to set the requested video mode. Repeat until it is successful or is rejected by the driver. */
865	LogFlowFunc(("DisplayChangeReqEx parameters iDisplay=%d x cx=%d x cy=%d x cBits=%d x SecondayMonEnb=%d x NewOriginX=%d x NewOriginY=%d x ChangeOrigin=%d\n",
866	iDisplay, cx, cy, cBits, fEnabled, cxOrigin, cyOrigin, fChangeOrigin));
867
868	for (;;)
869	{
870	VBOXDISPLAY_DRIVER_TYPE enmDriverType = getVBoxDisplayDriverType(pCtx);
871	if (enmDriverType == VBOXDISPLAY_DRIVER_TYPE_UNKNOWN)
872	{
873	LogFlowFunc(("vboxDisplayDriver is not active\n"));
874	break;
875	}
876
877	if (pCtx->pfnChangeDisplaySettingsEx != 0)
878	{
879	LogFlowFunc(("Detected W2K or later\n"));
880	if (!ResizeDisplayDevice(pCtx,
881	iDisplay,
882	cx,
883	cy,
884	cBits,
885	fEnabled,
886	cxOrigin,
887	cyOrigin,
888	fChangeOrigin,
889	true /fExtDispSup/ ))
890	{
891	LogFlowFunc(("ResizeDipspalyDevice return 0\n"));
892	break;
893	}
894
895	}
896	else
897	{
898	LogFlowFunc(("Detected NT\n"));
899	ResizeDisplayDeviceNT4(cx, cy, cBits);
900	break;
901	}
902
903	/* Retry the change a bit later. */
904	RTThreadSleep(1000);
905	}
906	}
907	} // if (fDisplayChangeQueried)
908
909	if (fEvents & VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED)
910	hlpReloadCursor();
911	}
912	else
913	{
914	// Checking once a second whether or not WM_DISPLAYCHANGED happened.
915	if (ASMAtomicXchgU32(&g_fGuestDisplaysChanged, 0))
916	{
917	// XPDM driver has VBoxDispDrvNotify to receive such a notifications
918	if (pCtx->pEnv->dispIf.enmMode >= VBOXDISPIF_MODE_WDDM)
919	{
920	VBOXDISPIFESCAPE EscapeHdr = { 0 };
921	EscapeHdr.escapeCode = VBOXESC_GUEST_DISPLAYCHANGED;
922
923	DWORD err = VBoxDispIfEscapeInOut(&pCtx->pEnv->dispIf, &EscapeHdr, 0);
924	LogFlowFunc(("VBoxDispIfEscapeInOut returned %d\n", err)); NOREF(err);
925	}
926	}
927
928	/* sleep a bit to not eat too much CPU in case the above call always fails */
929	if (rc != VERR_TIMEOUT)
930	RTThreadSleep(10);
931	}
932	}
933
934	/*
935	* Remove event filter and graphics capability report.
936	*/
937	int rc2 = VbglR3CtlFilterMask(0 /fOr/, VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST \| VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED /fNot/);
938	if (RT_FAILURE(rc2))
939	LogFlowFunc(("VbglR3CtlFilterMask failed: %Rrc\n", rc2));
940	PostMessage(g_hwndToolWindow, WM_VBOX_GRAPHICS_UNSUPPORTED, 0, 0);
941
942	LogFlowFuncLeaveRC(rc);
943	return rc;
944	}
945
946	/**
947	* The service description.
948	*/
949	VBOXSERVICEDESC g_SvcDescDisplay =
950	{
951	/* pszName. */
952	"display",
953	/* pszDescription. */
954	"Display Notifications",
955	/* methods */
956	VBoxDisplayInit,
957	VBoxDisplayWorker,
958	NULL /* pfnStop */,
959	VBoxDisplayDestroy
960	};
961

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source: vbox/trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxDisplay.cpp@ 68437

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