| 1 | /** @file
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| 2 | * VBoxService - Guest displays handling.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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| 7 | *
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| 8 | * This file is part of VirtualBox base platform packages, as
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| 9 | * available from https://www.alldomusa.eu.org.
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| 10 | *
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| 11 | * This program is free software; you can redistribute it and/or
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| 12 | * modify it under the terms of the GNU General Public License
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| 13 | * as published by the Free Software Foundation, in version 3 of the
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| 14 | * License.
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| 15 | *
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| 16 | * This program is distributed in the hope that it will be useful, but
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| 17 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 19 | * General Public License for more details.
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| 20 | *
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| 21 | * You should have received a copy of the GNU General Public License
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| 22 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 23 | *
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| 24 | * SPDX-License-Identifier: GPL-3.0-only
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| 25 | */
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| 26 |
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| 27 | #include <iprt/errcore.h>
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| 28 |
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| 29 | #include <VBox/VBoxGuestLib.h>
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| 30 | #include "VBoxServiceInternal.h"
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| 31 | #include "VBoxServiceUtils.h"
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| 32 |
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| 33 |
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| 34 | /*********************************************************************************************************************************
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| 35 | * Global Variables *
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| 36 | *********************************************************************************************************************************/
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| 37 |
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| 38 | /**
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| 39 | * @interface_method_impl{VBOXSERVICE,pfnInit}
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| 40 | */
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| 41 | static DECLCALLBACK(int) vgsvcDisplayConfigInit(void)
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| 42 | {
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| 43 | return VINF_SUCCESS;
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| 44 | }
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| 45 |
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| 46 | /**
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| 47 | * @interface_method_impl{VBOXSERVICE,pfnWorker}
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| 48 | */
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| 49 | DECLCALLBACK(int) vgsvcDisplayConfigWorker(bool volatile *pfShutdown)
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| 50 | {
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| 51 | int rc = VINF_SUCCESS;
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| 52 |
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| 53 | /*
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| 54 | * Tell the control thread that it can continue spawning services.
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| 55 | */
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| 56 | RTThreadUserSignal(RTThreadSelf());
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| 57 | /*
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| 58 | * The Work Loop.
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| 59 | */
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| 60 |
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| 61 | rc = VbglR3CtlFilterMask(VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST, 0);
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| 62 | VGSvcVerbose(2, "VbglR3CtlFilterMask set rc=%Rrc\n", rc);
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| 63 |
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| 64 | for (;;)
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| 65 | {
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| 66 | uint32_t fEvents = 0;
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| 67 |
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| 68 | rc = VbglR3AcquireGuestCaps(VMMDEV_GUEST_SUPPORTS_GRAPHICS, 0, false);
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| 69 | VGSvcVerbose(2, "VbglR3AcquireGuestCaps acquire VMMDEV_GUEST_SUPPORTS_GRAPHICS rc=%Rrc\n", rc);
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| 70 |
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| 71 | rc = VbglR3WaitEvent(VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST, 1000 /*ms*/, &fEvents);
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| 72 | VGSvcVerbose(2, "VbglR3WaitEvent rc=%Rrc\n", rc);
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| 73 |
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| 74 | if (RT_SUCCESS(rc))
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| 75 | {
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| 76 | VMMDevDisplayDef aDisplays[64];
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| 77 | uint32_t cDisplays = RT_ELEMENTS(aDisplays);
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| 78 |
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| 79 | rc = VbglR3GetDisplayChangeRequestMulti(cDisplays, &cDisplays, &aDisplays[0], true);
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| 80 | VGSvcVerbose(2, "VbglR3GetDisplayChangeRequestMulti rc=%Rrc cDisplays=%d\n", rc, cDisplays);
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| 81 | if (cDisplays > 0)
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| 82 | {
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| 83 | VGSvcVerbose(2, "Display[0] (%dx%d)\n", aDisplays[0].cx, aDisplays[0].cy);
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| 84 | }
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| 85 | }
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| 86 |
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| 87 | rc = VbglR3AcquireGuestCaps(0, VMMDEV_GUEST_SUPPORTS_GRAPHICS, false);
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| 88 | VGSvcVerbose(2, "VbglR3AcquireGuestCaps release VMMDEV_GUEST_SUPPORTS_GRAPHICS rc=%Rrc\n", rc);
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| 89 |
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| 90 | RTThreadSleep(1000);
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| 91 |
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| 92 | if (*pfShutdown)
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| 93 | break;
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| 94 | }
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| 95 |
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| 96 | rc = VbglR3CtlFilterMask(0, VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST);
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| 97 | VGSvcVerbose(2, "VbglR3CtlFilterMask cleared rc=%Rrc\n", rc);
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| 98 |
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| 99 | return rc;
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| 100 | }
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| 101 |
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| 102 | /**
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| 103 | * @interface_method_impl{VBOXSERVICE,pfnStop}
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| 104 | */
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| 105 | static DECLCALLBACK(void) vgsvcDisplayConfigStop(void)
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| 106 | {
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| 107 | }
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| 108 |
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| 109 | /**
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| 110 | * @interface_method_impl{VBOXSERVICE,pfnTerm}
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| 111 | */
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| 112 | static DECLCALLBACK(void) vgsvcDisplayConfigTerm(void)
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| 113 | {
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| 114 | }
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| 115 |
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| 116 | /**
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| 117 | * The 'displayconfig' service description.
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| 118 | */
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| 119 | VBOXSERVICE g_DisplayConfig =
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| 120 | {
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| 121 | /* pszName. */
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| 122 | "displayconfig",
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| 123 | /* pszDescription. */
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| 124 | "Display configuration",
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| 125 | /* pszUsage. */
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| 126 | NULL,
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| 127 | /* pszOptions. */
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| 128 | NULL,
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| 129 | /* methods */
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| 130 | VGSvcDefaultPreInit,
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| 131 | VGSvcDefaultOption,
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| 132 | vgsvcDisplayConfigInit,
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| 133 | vgsvcDisplayConfigWorker,
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| 134 | vgsvcDisplayConfigStop,
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| 135 | vgsvcDisplayConfigTerm
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| 136 | };
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