status_t VBoxDisplayService::_ServiceThread()
{
LogFlow(("VBoxDisplayService::_ServiceThread"));
VbglR3CtlFilterMask(VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST, 0);
VbglR3SetGuestCaps(VMMDEV_GUEST_SUPPORTS_GRAPHICS, 0);
for (;;)
{
uint32_t events;
int rc = VbglR3WaitEvent(VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST, 5000, &events);
if (rc == -6) // timed out?
continue;
if (RT_SUCCESS(rc))
{
uint32_t cx, cy, cBits, iDisplay;
int rc2 = VbglR3GetDisplayChangeRequest(&cx, &cy, &cBits, &iDisplay, true);
LogFlow(("rc2=%d screen %d size changed (%d, %d, %d)\n", rc2, iDisplay, cx, cy, cBits));
if (RT_SUCCESS(rc2))
{
display_mode mode;
fScreen.GetMode(&mode);
if (cBits == 0)
cBits = get_depth_for_color_space(mode.space);
mode.timing.h_display = cx;
mode.timing.v_display = cy;
mode.space = get_color_space_for_depth(cBits);
mode.virtual_width = cx;
mode.virtual_height = cy;
/*= {
{0, cx, 0, 0, cBits * cx / 8, cy, 0, 0, cBits * cy / 8, 0},
get_color_space_for_depth(cBits),
cx, cy, 0, 0, 0
};*/
fScreen.SetMode(&mode, false);
}
}
else
fExiting = true;
LogFlow(("processed host event rc = %d\n", rc));
if (fExiting)
break;
}
return 0;
}
/**
* Query the last display change request.
*
* @returns boolean success indicator.
* @param pScrn Pointer to the X screen info structure.
* @param pcx Where to store the horizontal pixel resolution (0 = do not change).
* @param pcy Where to store the vertical pixel resolution (0 = do not change).
* @param pcBits Where to store the bits per pixel (0 = do not change).
* @param iDisplay Where to store the display number the request was for - 0 for the
* primary display, 1 for the first secondary, etc.
*/
Bool
vboxGetDisplayChangeRequest(ScrnInfoPtr pScrn, uint32_t *pcx, uint32_t *pcy,
uint32_t *pcBits, uint32_t *piDisplay)
{
VBOXPtr pVBox = pScrn->driverPrivate;
TRACE_ENTRY();
if (!pVBox->useDevice)
return FALSE;
int rc = VbglR3GetDisplayChangeRequest(pcx, pcy, pcBits, piDisplay, false);
if (RT_SUCCESS(rc))
return TRUE;
xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Failed to obtain the last resolution requested by the guest, rc=%d.\n", rc);
return FALSE;
}
/**
* Display change request monitor thread function.
* Before entering the loop, we re-read the last request
* received, and if the first one received inside the
* loop is identical we ignore it, because it is probably
* stale.
*/
static int runDisplay(Display *pDisplay)
{
LogRelFlowFunc(("\n"));
Cursor hClockCursor = XCreateFontCursor(pDisplay, XC_watch);
Cursor hArrowCursor = XCreateFontCursor(pDisplay, XC_left_ptr);
int RRMaj, RRMin;
if (!XRRQueryVersion(pDisplay, &RRMaj, &RRMin))
RRMin = 0;
const char *pcszXrandr = "xrandr";
if (RTFileExists("/usr/X11/bin/xrandr"))
pcszXrandr = "/usr/X11/bin/xrandr";
int rc = RTThreadCreate(NULL, x11ConnectionMonitor, NULL, 0,
RTTHREADTYPE_INFREQUENT_POLLER, 0, "X11 monitor");
if (RT_FAILURE(rc))
return rc;
while (true)
{
uint32_t fEvents = 0, cx = 0, cy = 0, cBits = 0, iDisplay = 0;
rc = VbglR3WaitEvent( VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST
| VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED,
RT_INDEFINITE_WAIT, &fEvents);
if (RT_FAILURE(rc) && rc != VERR_INTERRUPTED) /* VERR_NO_MEMORY? */
return rc;
/* Jiggle the mouse pointer to wake up the driver. */
XGrabPointer(pDisplay,
DefaultRootWindow(pDisplay), true, 0, GrabModeAsync,
GrabModeAsync, None, hClockCursor, CurrentTime);
XFlush(pDisplay);
XGrabPointer(pDisplay,
DefaultRootWindow(pDisplay), true, 0, GrabModeAsync,
GrabModeAsync, None, hArrowCursor, CurrentTime);
XFlush(pDisplay);
XUngrabPointer(pDisplay, CurrentTime);
XFlush(pDisplay);
/* And if it is a size hint, set the new size now that the video
* driver has had a chance to update its list. */
if (RT_SUCCESS(rc) && (fEvents & VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST))
{
int rc2 = VbglR3GetDisplayChangeRequest(&cx, &cy, &cBits,
&iDisplay, true);
/* If we are not stopping, sleep for a bit to avoid using up
too much CPU while retrying. */
if (RT_FAILURE(rc2))
RTThreadYield();
else
if (RRMin < 2)
setSize(pDisplay, cx, cy);
else
{
char szCommand[256];
RTStrPrintf(szCommand, sizeof(szCommand),
"%s --output VBOX%u --set VBOX_MODE %dx%d",
pcszXrandr, iDisplay, cx, cy);
system(szCommand);
RTStrPrintf(szCommand, sizeof(szCommand),
"%s --output VBOX%u --preferred",
pcszXrandr, iDisplay);
system(szCommand);
}
}
}
LogRelFlowFunc(("returning VINF_SUCCESS\n"));
return VINF_SUCCESS;
}