diff options
Diffstat (limited to 'src/VBox/Additions/x11/vboxvideo/getmode.c')
| -rw-r--r-- | src/VBox/Additions/x11/vboxvideo/getmode.c | 325 |
1 files changed, 325 insertions, 0 deletions
diff --git a/src/VBox/Additions/x11/vboxvideo/getmode.c b/src/VBox/Additions/x11/vboxvideo/getmode.c new file mode 100644 index 00000000..30383541 --- /dev/null +++ b/src/VBox/Additions/x11/vboxvideo/getmode.c @@ -0,0 +1,325 @@ +/* $Id: getmode.c $ */ +/** @file + * VirtualBox X11 Additions graphics driver dynamic video mode functions. + */ + +/* + * Copyright (C) 2006-2022 Oracle and/or its affiliates. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#include "vboxvideo.h" + +#define NEED_XF86_TYPES +#include "xf86.h" + +#ifdef XORG_7X +# include <stdio.h> +# include <stdlib.h> +# include <string.h> +#endif + +#ifdef VBOXVIDEO_13 +# ifdef RT_OS_LINUX +# include <linux/input.h> +# ifndef EVIOCGRAB +# define EVIOCGRAB _IOW('E', 0x90, int) +# endif +# ifndef KEY_SWITCHVIDEOMODE +# define KEY_SWITCHVIDEOMODE 227 +# endif +# include <dirent.h> +# include <errno.h> +# include <fcntl.h> +# include <unistd.h> +# endif /* RT_OS_LINUX */ +#endif /* VBOXVIDEO_13 */ + +/************************************************************************** +* Main functions * +**************************************************************************/ + +/** + * Fills a display mode M with a built-in mode of name pszName and dimensions + * cx and cy. + */ +static void vboxFillDisplayMode(ScrnInfoPtr pScrn, DisplayModePtr m, + const char *pszName, unsigned cx, unsigned cy) +{ + VBOXPtr pVBox = pScrn->driverPrivate; + char szName[256]; + DisplayModePtr pPrev = m->prev; + DisplayModePtr pNext = m->next; + + if (!pszName) + { + sprintf(szName, "%ux%u", cx, cy); + pszName = szName; + } + TRACE_LOG("pszName=%s, cx=%u, cy=%u\n", pszName, cx, cy); + if (m->name) + free((void*)m->name); + memset(m, '\0', sizeof(*m)); + m->prev = pPrev; + m->next = pNext; + m->status = MODE_OK; + m->type = M_T_BUILTIN; + /* Older versions of VBox only support screen widths which are a multiple + * of 8 */ + if (pVBox->fAnyX) + m->HDisplay = cx; + else + m->HDisplay = cx & ~7; + m->HSyncStart = m->HDisplay + 2; + m->HSyncEnd = m->HDisplay + 4; + m->HTotal = m->HDisplay + 6; + m->VDisplay = cy; + m->VSyncStart = m->VDisplay + 2; + m->VSyncEnd = m->VDisplay + 4; + m->VTotal = m->VDisplay + 6; + m->Clock = m->HTotal * m->VTotal * 60 / 1000; /* kHz */ + m->name = xnfstrdup(pszName); +} + +/** + * Allocates an empty display mode and links it into the doubly linked list of + * modes pointed to by pScrn->modes. Returns a pointer to the newly allocated + * memory. + */ +static DisplayModePtr vboxAddEmptyScreenMode(ScrnInfoPtr pScrn) +{ + DisplayModePtr pMode = xnfcalloc(sizeof(DisplayModeRec), 1); + + TRACE_ENTRY(); + if (!pScrn->modes) + { + pScrn->modes = pMode; + pMode->next = pMode; + pMode->prev = pMode; + } + else + { + pMode->next = pScrn->modes; + pMode->prev = pScrn->modes->prev; + pMode->next->prev = pMode; + pMode->prev->next = pMode; + } + return pMode; +} + +/** + * Create display mode entries in the screen information structure for each + * of the graphics modes that we wish to support, that is: + * - A dynamic mode in first place which will be updated by the RandR code. + * - Any modes that the user requested in xorg.conf/XFree86Config. + */ +void vboxAddModes(ScrnInfoPtr pScrn) +{ + unsigned cx = 0; + unsigned cy = 0; + unsigned i; + DisplayModePtr pMode; + + /* Add two dynamic mode entries. When we receive a new size hint we will + * update whichever of these is not current. */ + pMode = vboxAddEmptyScreenMode(pScrn); + vboxFillDisplayMode(pScrn, pMode, NULL, 800, 600); + pMode = vboxAddEmptyScreenMode(pScrn); + vboxFillDisplayMode(pScrn, pMode, NULL, 800, 600); + /* Add any modes specified by the user. We assume here that the mode names + * reflect the mode sizes. */ + for (i = 0; pScrn->display->modes && pScrn->display->modes[i]; i++) + { + if (sscanf(pScrn->display->modes[i], "%ux%u", &cx, &cy) == 2) + { + pMode = vboxAddEmptyScreenMode(pScrn); + vboxFillDisplayMode(pScrn, pMode, pScrn->display->modes[i], cx, cy); + } + } +} + +/** Set the initial values for the guest screen size hints to standard values + * in case nothing else is available. */ +void VBoxInitialiseSizeHints(ScrnInfoPtr pScrn) +{ + VBOXPtr pVBox = VBOXGetRec(pScrn); + unsigned i; + + for (i = 0; i < pVBox->cScreens; ++i) + { + pVBox->pScreens[i].aPreferredSize.cx = 800; + pVBox->pScreens[i].aPreferredSize.cy = 600; + pVBox->pScreens[i].afConnected = true; + } + /* Set up the first mode correctly to match the requested initial mode. */ + pScrn->modes->HDisplay = pVBox->pScreens[0].aPreferredSize.cx; + pScrn->modes->VDisplay = pVBox->pScreens[0].aPreferredSize.cy; +} + +static Bool useHardwareCursor(uint32_t fCursorCapabilities) +{ + if (fCursorCapabilities & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE) + return true; + return false; +} + +static void compareAndMaybeSetUseHardwareCursor(VBOXPtr pVBox, uint32_t fCursorCapabilities, Bool *pfChanged, Bool fSet) +{ + if (pVBox->fUseHardwareCursor != useHardwareCursor(fCursorCapabilities)) + *pfChanged = true; + if (fSet) + pVBox->fUseHardwareCursor = useHardwareCursor(fCursorCapabilities); +} + +#define COMPARE_AND_MAYBE_SET(pDest, src, pfChanged, fSet) \ +do { \ + if (*(pDest) != (src)) \ + { \ + if (fSet) \ + *(pDest) = (src); \ + *(pfChanged) = true; \ + } \ +} while(0) + +/** Read in information about the most recent size hints and cursor + * capabilities requested for the guest screens from HGSMI. */ +void vbvxReadSizesAndCursorIntegrationFromHGSMI(ScrnInfoPtr pScrn, Bool *pfNeedUpdate) +{ + VBOXPtr pVBox = VBOXGetRec(pScrn); + int rc; + unsigned i; + Bool fChanged = false; + uint32_t fCursorCapabilities; + + if (!pVBox->fHaveHGSMIModeHints) + return; + rc = VBoxHGSMIGetModeHints(&pVBox->guestCtx, pVBox->cScreens, pVBox->paVBVAModeHints); + AssertMsg(rc == VINF_SUCCESS, ("VBoxHGSMIGetModeHints failed, rc=%d.\n", rc)); + for (i = 0; i < pVBox->cScreens; ++i) + if (pVBox->paVBVAModeHints[i].magic == VBVAMODEHINT_MAGIC) + { + COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredSize.cx, pVBox->paVBVAModeHints[i].cx & 0x8fff, &fChanged, true); + COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredSize.cy, pVBox->paVBVAModeHints[i].cy & 0x8fff, &fChanged, true); + COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].afConnected, RT_BOOL(pVBox->paVBVAModeHints[i].fEnabled), &fChanged, true); + COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredLocation.x, (int32_t)pVBox->paVBVAModeHints[i].dx & 0x8fff, &fChanged, + true); + COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].aPreferredLocation.y, (int32_t)pVBox->paVBVAModeHints[i].dy & 0x8fff, &fChanged, + true); + if (pVBox->paVBVAModeHints[i].dx != ~(uint32_t)0 && pVBox->paVBVAModeHints[i].dy != ~(uint32_t)0) + COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].afHaveLocation, true, &fChanged, true); + else + COMPARE_AND_MAYBE_SET(&pVBox->pScreens[i].afHaveLocation, false, &fChanged, true); + } + rc = VBoxQueryConfHGSMI(&pVBox->guestCtx, VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &fCursorCapabilities); + AssertMsg(rc == VINF_SUCCESS, ("Getting VBOX_VBVA_CONF32_CURSOR_CAPABILITIES failed, rc=%d.\n", rc)); + compareAndMaybeSetUseHardwareCursor(pVBox, fCursorCapabilities, &fChanged, true); + if (pfNeedUpdate != NULL && fChanged) + *pfNeedUpdate = true; +} + +#undef COMPARE_AND_MAYBE_SET + +#ifdef VBOXVIDEO_13 +# ifdef RT_OS_LINUX +/** We have this for two purposes: one is to ensure that the X server is woken + * up when we get a video ACPI event. Two is to grab ACPI video events to + * prevent gnome-settings-daemon from seeing them, as older versions ignored + * the time stamp and handled them at the wrong time. */ +static void acpiEventHandler(int fd, void *pvData) +{ + struct input_event event; + ssize_t rc; + RT_NOREF(pvData); + + do + rc = read(fd, &event, sizeof(event)); + while (rc > 0 || (rc == -1 && errno == EINTR)); + /* Why do they return EAGAIN instead of zero bytes read like everyone else does? */ + AssertMsg(rc != -1 || errno == EAGAIN, ("Reading ACPI input event failed.\n")); +} + +void vbvxSetUpLinuxACPI(ScreenPtr pScreen) +{ + static const char s_szDevInput[] = "/dev/input/"; + struct dirent *pDirent; + char szFile[sizeof(s_szDevInput) + sizeof(pDirent->d_name) + 16]; + VBOXPtr pVBox = VBOXGetRec(xf86Screens[pScreen->myNum]); + DIR *pDir; + int fd = -1; + + if (pVBox->fdACPIDevices != -1 || pVBox->hACPIEventHandler != NULL) + FatalError("ACPI input file descriptor not initialised correctly.\n"); + pDir = opendir("/dev/input"); + if (pDir == NULL) + return; + memcpy(szFile, s_szDevInput, sizeof(s_szDevInput)); + for (pDirent = readdir(pDir); pDirent != NULL; pDirent = readdir(pDir)) + { + if (strncmp(pDirent->d_name, "event", sizeof("event") - 1) == 0) + { +#define BITS_PER_BLOCK (sizeof(unsigned long) * 8) + char szDevice[64] = ""; + unsigned long afKeys[KEY_MAX / BITS_PER_BLOCK]; + size_t const cchName = strlen(pDirent->d_name); + if (cchName + sizeof(s_szDevInput) > sizeof(szFile)) + continue; + memcpy(&szFile[sizeof(s_szDevInput) - 1], pDirent->d_name, cchName + 1); + if (fd != -1) + close(fd); + fd = open(szFile, O_RDONLY | O_NONBLOCK); + if ( fd == -1 + || ioctl(fd, EVIOCGNAME(sizeof(szDevice)), szDevice) == -1 + || strcmp(szDevice, "Video Bus") != 0) + continue; + if ( ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(afKeys)), afKeys) == -1 + || (( afKeys[KEY_SWITCHVIDEOMODE / BITS_PER_BLOCK] + >> KEY_SWITCHVIDEOMODE % BITS_PER_BLOCK) & 1) == 0) + break; + if (ioctl(fd, EVIOCGRAB, (void *)1) != 0) + break; + pVBox->hACPIEventHandler + = xf86AddGeneralHandler(fd, acpiEventHandler, pScreen); + if (pVBox->hACPIEventHandler == NULL) + break; + pVBox->fdACPIDevices = fd; + fd = -1; + break; +#undef BITS_PER_BLOCK + } + } + if (fd != -1) + close(fd); + closedir(pDir); +} + +void vbvxCleanUpLinuxACPI(ScreenPtr pScreen) +{ + VBOXPtr pVBox = VBOXGetRec(xf86Screens[pScreen->myNum]); + if (pVBox->fdACPIDevices != -1) + close(pVBox->fdACPIDevices); + pVBox->fdACPIDevices = -1; + xf86RemoveGeneralHandler(pVBox->hACPIEventHandler); + pVBox->hACPIEventHandler = NULL; +} +# endif /* RT_OS_LINUX */ +#endif /* VBOXVIDEO_13 */ |