VirtualBox

source: vbox/trunk/src/VBox/Additions/x11/vboxvideo/getmode.c@ 55723

Last change on this file since 55723 was 55393, checked in by vboxsync, 10 years ago

Additions/x11/vboxvideo: update testing documentation.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id Revision
File size: 14.1 KB
Line 
1/* $Id: getmode.c 55393 2015-04-22 20:01:10Z vboxsync $ */
2/** @file
3 * VirtualBox X11 Additions graphics driver dynamic video mode functions.
4 */
5
6/*
7 * Copyright (C) 2006-2014 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
18#include "vboxvideo.h"
19#include <VBox/VMMDev.h>
20
21#define NEED_XF86_TYPES
22#include <iprt/string.h>
23
24#include "xf86.h"
25
26#ifdef XORG_7X
27# include <stdio.h>
28# include <stdlib.h>
29#endif
30
31#ifdef VBOXVIDEO_13
32# ifdef RT_OS_LINUX
33# include <linux/input.h>
34# ifndef EVIOCGRAB
35# define EVIOCGRAB _IOW('E', 0x90, int)
36# endif
37# ifndef KEY_SWITCHVIDEOMODE
38# define KEY_SWITCHVIDEOMODE 227
39# endif
40# include <dirent.h>
41# include <errno.h>
42# include <fcntl.h>
43# include <unistd.h>
44# endif /* RT_OS_LINUX */
45#endif /* VBOXVIDEO_13 */
46
47/**************************************************************************
48* Main functions *
49**************************************************************************/
50
51/**
52 * Fills a display mode M with a built-in mode of name pszName and dimensions
53 * cx and cy.
54 */
55static void vboxFillDisplayMode(ScrnInfoPtr pScrn, DisplayModePtr m,
56 const char *pszName, unsigned cx, unsigned cy)
57{
58 VBOXPtr pVBox = pScrn->driverPrivate;
59 char szName[256];
60 DisplayModePtr pPrev = m->prev;
61 DisplayModePtr pNext = m->next;
62
63 if (!pszName)
64 {
65 sprintf(szName, "%ux%u", cx, cy);
66 pszName = szName;
67 }
68 TRACE_LOG("pszName=%s, cx=%u, cy=%u\n", pszName, cx, cy);
69 if (m->name)
70 free((void*)m->name);
71 memset(m, '\0', sizeof(*m));
72 m->prev = pPrev;
73 m->next = pNext;
74 m->status = MODE_OK;
75 m->type = M_T_BUILTIN;
76 /* Older versions of VBox only support screen widths which are a multiple
77 * of 8 */
78 if (pVBox->fAnyX)
79 m->HDisplay = cx;
80 else
81 m->HDisplay = cx & ~7;
82 m->HSyncStart = m->HDisplay + 2;
83 m->HSyncEnd = m->HDisplay + 4;
84 m->HTotal = m->HDisplay + 6;
85 m->VDisplay = cy;
86 m->VSyncStart = m->VDisplay + 2;
87 m->VSyncEnd = m->VDisplay + 4;
88 m->VTotal = m->VDisplay + 6;
89 m->Clock = m->HTotal * m->VTotal * 60 / 1000; /* kHz */
90 m->name = xnfstrdup(pszName);
91}
92
93/**
94 * Allocates an empty display mode and links it into the doubly linked list of
95 * modes pointed to by pScrn->modes. Returns a pointer to the newly allocated
96 * memory.
97 */
98static DisplayModePtr vboxAddEmptyScreenMode(ScrnInfoPtr pScrn)
99{
100 DisplayModePtr pMode = xnfcalloc(sizeof(DisplayModeRec), 1);
101
102 TRACE_ENTRY();
103 if (!pScrn->modes)
104 {
105 pScrn->modes = pMode;
106 pMode->next = pMode;
107 pMode->prev = pMode;
108 }
109 else
110 {
111 pMode->next = pScrn->modes;
112 pMode->prev = pScrn->modes->prev;
113 pMode->next->prev = pMode;
114 pMode->prev->next = pMode;
115 }
116 return pMode;
117}
118
119/**
120 * Create display mode entries in the screen information structure for each
121 * of the graphics modes that we wish to support, that is:
122 * - A dynamic mode in first place which will be updated by the RandR code.
123 * - Any modes that the user requested in xorg.conf/XFree86Config.
124 */
125void vboxAddModes(ScrnInfoPtr pScrn)
126{
127 unsigned cx = 0, cy = 0, cIndex = 0;
128 unsigned i;
129 DisplayModePtr pMode;
130
131 /* Add two dynamic mode entries. When we receive a new size hint we will
132 * update whichever of these is not current. */
133 pMode = vboxAddEmptyScreenMode(pScrn);
134 vboxFillDisplayMode(pScrn, pMode, NULL, 1024, 768);
135 pMode = vboxAddEmptyScreenMode(pScrn);
136 vboxFillDisplayMode(pScrn, pMode, NULL, 1024, 768);
137 /* Add any modes specified by the user. We assume here that the mode names
138 * reflect the mode sizes. */
139 for (i = 0; pScrn->display->modes && pScrn->display->modes[i]; i++)
140 {
141 if (sscanf(pScrn->display->modes[i], "%ux%u", &cx, &cy) == 2)
142 {
143 pMode = vboxAddEmptyScreenMode(pScrn);
144 vboxFillDisplayMode(pScrn, pMode, pScrn->display->modes[i], cx, cy);
145 }
146 }
147}
148
149/** Set the initial values for the guest screen size hints to standard values
150 * in case nothing else is available. */
151void VBoxInitialiseSizeHints(ScrnInfoPtr pScrn)
152{
153 VBOXPtr pVBox = VBOXGetRec(pScrn);
154 DisplayModePtr pMode;
155 unsigned i;
156
157 for (i = 0; i < pVBox->cScreens; ++i)
158 {
159 pVBox->pScreens[i].aPreferredSize.cx = 1024;
160 pVBox->pScreens[i].aPreferredSize.cy = 768;
161 pVBox->pScreens[i].afConnected = true;
162 }
163 /* Set up the first mode correctly to match the requested initial mode. */
164 pScrn->modes->HDisplay = pVBox->pScreens[0].aPreferredSize.cx;
165 pScrn->modes->VDisplay = pVBox->pScreens[0].aPreferredSize.cy;
166}
167
168static bool useHardwareCursor(uint32_t fCursorCapabilities)
169{
170 if ( !(fCursorCapabilities & VMMDEV_MOUSE_HOST_CANNOT_HWPOINTER)
171 && (fCursorCapabilities & VMMDEV_MOUSE_HOST_WANTS_ABSOLUTE))
172 return true;
173 return false;
174}
175
176static void compareAndMaybeSetUseHardwareCursor(VBOXPtr pVBox, uint32_t fCursorCapabilities, bool *pfChanged, bool fSet)
177{
178 if (pVBox->fUseHardwareCursor != useHardwareCursor(fCursorCapabilities))
179 *pfChanged = true;
180 if (fSet)
181 pVBox->fUseHardwareCursor = useHardwareCursor(fCursorCapabilities);
182}
183
184#define SIZE_HINTS_PROPERTY "VBOX_SIZE_HINTS"
185#define SIZE_HINTS_MISMATCH_PROPERTY "VBOX_SIZE_HINTS_MISMATCH"
186#define MOUSE_CAPABILITIES_PROPERTY "VBOX_MOUSE_CAPABILITIES"
187
188#define COMPARE_AND_MAYBE_SET(pDest, src, pfChanged, fSet) \
189do { \
190 if (*(pDest) != (src)) \
191 { \
192 if (fSet) \
193 *(pDest) = (src); \
194 *(pfChanged) = true; \
195 } \
196} while(0)
197
198/** Read in information about the most recent size hints and cursor
199 * capabilities requested for the guest screens from a root window property set
200 * by an X11 client. Information obtained via HGSMI takes priority. */
201void vbvxReadSizesAndCursorIntegrationFromProperties(ScrnInfoPtr pScrn, bool *pfNeedUpdate)
202{
203 VBOXPtr pVBox = VBOXGetRec(pScrn);
204 size_t cPropertyElements, cDummy;
205 int32_t *paModeHints, *pfCursorCapabilities;
206 int rc;
207 unsigned i;
208 bool fChanged;
209 bool fNeedUpdate = false;
210 int32_t fSizeMismatch = false;
211
212 if (vbvxGetIntegerPropery(pScrn, SIZE_HINTS_PROPERTY, &cPropertyElements, &paModeHints) != VINF_SUCCESS)
213 paModeHints = NULL;
214 if (paModeHints != NULL)
215 for (i = 0; i < cPropertyElements / 2 && i < pVBox->cScreens; ++i)
216 {
217 VBVAMODEHINT *pVBVAModeHint = &pVBox->paVBVAModeHints[i];
218 int32_t iSizeHint = paModeHints[i * 2];
219 int32_t iLocation = paModeHints[i * 2 + 1];
220 bool fNoHGSMI = !pVBox->fHaveHGSMIModeHints || pVBVAModeHint->magic != VBVAMODEHINT_MAGIC;
221
222 fChanged = false;
223 if (iSizeHint != 0)
224 {
225 if (iSizeHint == -1)
226 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].afConnected, false, &fChanged, fNoHGSMI);
227 else
228 {
229 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredSize.cx, (iSizeHint >> 16) & 0x8fff, &fChanged, fNoHGSMI);
230 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredSize.cy, iSizeHint & 0x8fff, &fChanged, fNoHGSMI);
231 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].afConnected, true, &fChanged, fNoHGSMI);
232 }
233 if (iLocation == -1)
234 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].afHaveLocation, false, &fChanged, fNoHGSMI);
235 else
236 {
237 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredLocation.x, (iLocation >> 16) & 0x8fff, &fChanged,
238 fNoHGSMI);
239 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredLocation.y, iLocation & 0x8fff, &fChanged, fNoHGSMI);
240 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].afHaveLocation, true, &fChanged, fNoHGSMI);
241 }
242 if (fChanged && fNoHGSMI)
243 fNeedUpdate = true;
244 if (fChanged && !fNoHGSMI)
245 fSizeMismatch = true;
246 }
247 }
248 fChanged = false;
249 if ( vbvxGetIntegerPropery(pScrn, MOUSE_CAPABILITIES_PROPERTY, &cDummy, &pfCursorCapabilities) == VINF_SUCCESS
250 && cDummy == 1)
251 compareAndMaybeSetUseHardwareCursor(pVBox, *pfCursorCapabilities, &fChanged, !pVBox->fHaveHGSMIModeHints);
252 if (fChanged && !pVBox->fHaveHGSMIModeHints)
253 fNeedUpdate = true;
254 if (fChanged && pVBox->fHaveHGSMIModeHints)
255 fSizeMismatch = true;
256 vbvxSetIntegerPropery(pScrn, SIZE_HINTS_MISMATCH_PROPERTY, 1, &fSizeMismatch, false);
257 if (pfNeedUpdate != NULL && fNeedUpdate)
258 *pfNeedUpdate = true;
259}
260
261/** Read in information about the most recent size hints and cursor
262 * capabilities requested for the guest screens from HGSMI. */
263void vbvxReadSizesAndCursorIntegrationFromHGSMI(ScrnInfoPtr pScrn, bool *pfNeedUpdate)
264{
265 VBOXPtr pVBox = VBOXGetRec(pScrn);
266 int rc;
267 unsigned i;
268 bool fChanged = false;
269 uint32_t fCursorCapabilities;
270
271 if (!pVBox->fHaveHGSMIModeHints)
272 return;
273 rc = VBoxHGSMIGetModeHints(&pVBox->guestCtx, pVBox->cScreens, pVBox->paVBVAModeHints);
274 VBVXASSERT(rc == VINF_SUCCESS, ("VBoxHGSMIGetModeHints failed, rc=%d.\n", rc));
275 for (i = 0; i < pVBox->cScreens; ++i)
276 if (pVBox->paVBVAModeHints[i].magic == VBVAMODEHINT_MAGIC)
277 {
278 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredSize.cx, pVBox->paVBVAModeHints[i].cx & 0x8fff, &fChanged, true);
279 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredSize.cy, pVBox->paVBVAModeHints[i].cy & 0x8fff, &fChanged, true);
280 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].afConnected, RT_BOOL(pVBox->paVBVAModeHints[i].fEnabled), &fChanged, true);
281 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredLocation.x, (int32_t)pVBox->paVBVAModeHints[i].dx & 0x8fff, &fChanged,
282 true);
283 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredLocation.y, (int32_t)pVBox->paVBVAModeHints[i].dy & 0x8fff, &fChanged,
284 true);
285 if (pVBox->paVBVAModeHints[i].dx != ~(uint32_t)0 && pVBox->paVBVAModeHints[i].dy != ~(uint32_t)0)
286 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].afHaveLocation, true, &fChanged, true);
287 else
288 COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].afHaveLocation, false, &fChanged, true);
289 }
290 rc = VBoxQueryConfHGSMI(&pVBox->guestCtx, VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &fCursorCapabilities);
291 VBVXASSERT(rc == VINF_SUCCESS, ("Getting VBOX_VBVA_CONF32_CURSOR_CAPABILITIES failed, rc=%d.\n", rc));
292 compareAndMaybeSetUseHardwareCursor(pVBox, fCursorCapabilities, &fChanged, true);
293 if (pfNeedUpdate != NULL && fChanged)
294 *pfNeedUpdate = true;
295}
296
297#undef COMPARE_AND_MAYBE_SET
298
299#ifdef VBOXVIDEO_13
300# ifdef RT_OS_LINUX
301/** We have this for two purposes: one is to ensure that the X server is woken
302 * up when we get a video ACPI event. Two is to grab ACPI video events to
303 * prevent gnome-settings-daemon from seeing them, as older versions ignored
304 * the time stamp and handled them at the wrong time. */
305static void acpiEventHandler(int fd, void *pvData)
306{
307 ScreenPtr pScreen = (ScreenPtr)pvData;
308 VBOXPtr pVBox = VBOXGetRec(xf86Screens[pScreen->myNum]);
309 struct input_event event;
310 ssize_t rc;
311
312 do
313 rc = read(fd, &event, sizeof(event));
314 while (rc > 0 || (rc == -1 && errno == EINTR));
315 /* Why do they return EAGAIN instead of zero bytes read like everyone else does? */
316 VBVXASSERT(rc != -1 || errno == EAGAIN, ("Reading ACPI input event failed.\n"));
317}
318
319void vbvxSetUpLinuxACPI(ScreenPtr pScreen)
320{
321 VBOXPtr pVBox = VBOXGetRec(xf86Screens[pScreen->myNum]);
322 struct dirent *pDirent;
323 DIR *pDir;
324 int fd = -1;
325
326 if (pVBox->fdACPIDevices != -1 || pVBox->hACPIEventHandler != NULL)
327 FatalError("ACPI input file descriptor not initialised correctly.\n");
328 pDir = opendir("/dev/input");
329 if (pDir == NULL)
330 return;
331 for (pDirent = readdir(pDir); pDirent != NULL; pDirent = readdir(pDir))
332 {
333 if (strncmp(pDirent->d_name, "event", sizeof("event") - 1) == 0)
334 {
335#define BITS_PER_BLOCK (sizeof(unsigned long) * 8)
336 char szFile[64] = "/dev/input/";
337 char szDevice[64] = "";
338 unsigned long afKeys[KEY_MAX / BITS_PER_BLOCK];
339
340 strncat(szFile, pDirent->d_name, sizeof(szFile) - sizeof("/dev/input/"));
341 if (fd != -1)
342 close(fd);
343 fd = open(szFile, O_RDONLY | O_NONBLOCK);
344 if ( fd == -1
345 || ioctl(fd, EVIOCGNAME(sizeof(szDevice)), szDevice) == -1
346 || strcmp(szDevice, "Video Bus") != 0)
347 continue;
348 if ( ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(afKeys)), afKeys) == -1
349 || (( afKeys[KEY_SWITCHVIDEOMODE / BITS_PER_BLOCK]
350 >> KEY_SWITCHVIDEOMODE % BITS_PER_BLOCK) & 1) == 0)
351 break;
352 if (ioctl(fd, EVIOCGRAB, (void *)1) != 0)
353 break;
354 pVBox->hACPIEventHandler
355 = xf86AddGeneralHandler(fd, acpiEventHandler, pScreen);
356 if (pVBox->hACPIEventHandler == NULL)
357 break;
358 pVBox->fdACPIDevices = fd;
359 fd = -1;
360 break;
361#undef BITS_PER_BLOCK
362 }
363 }
364 if (fd != -1)
365 close(fd);
366 closedir(pDir);
367}
368
369void vbvxCleanUpLinuxACPI(ScreenPtr pScreen)
370{
371 VBOXPtr pVBox = VBOXGetRec(xf86Screens[pScreen->myNum]);
372 if (pVBox->fdACPIDevices != -1)
373 close(pVBox->fdACPIDevices);
374 pVBox->fdACPIDevices = -1;
375 xf86RemoveGeneralHandler(pVBox->hACPIEventHandler);
376 pVBox->hACPIEventHandler = NULL;
377}
378# endif /* RT_OS_LINUX */
379#endif /* VBOXVIDEO_13 */
Note: See TracBrowser for help on using the repository browser.

© 2024 Oracle Support Privacy / Do Not Sell My Info Terms of Use Trademark Policy Automated Access Etiquette