| 1 | /** $Id: VBoxGuestR3LibSeamless.cpp 6780 2008-02-04 10:51:02Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, Seamless mode.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2007 innotek GmbH
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 |
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| 19 | /*******************************************************************************
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| 20 | * Header Files *
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| 21 | *******************************************************************************/
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| 22 | #include <iprt/assert.h>
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| 23 | #include <iprt/string.h>
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| 24 |
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| 25 | #include <VBox/VBoxGuest.h>
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| 26 | #include <VBox/VBoxDev.h>
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| 27 | #include <VBox/log.h>
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| 28 |
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| 29 | #include "VBGLR3Internal.h"
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| 30 |
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| 31 | /**
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| 32 | * Tell the host that we support (or no longer support) seamless mode.
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| 33 | *
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| 34 | * @returns IPRT status value
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| 35 | * @param fState whether or not we support seamless mode
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| 36 | *
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| 37 | * @todo Currently this will trample over any other capabilities the guest may have.
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| 38 | * This will have to be fixed when more capabilities are added at the latest.
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| 39 | */
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| 40 | VBGLR3DECL(int) VbglR3SeamlessSetCap(bool fState)
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| 41 | {
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| 42 | VMMDevReqGuestCapabilities vmmreqGuestCaps;
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| 43 | int rc = VINF_SUCCESS;
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| 44 |
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| 45 | memset(&vmmreqGuestCaps, 0, sizeof(vmmreqGuestCaps));
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| 46 | vmmdevInitRequest(&vmmreqGuestCaps.header, VMMDevReq_ReportGuestCapabilities);
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| 47 | vmmreqGuestCaps.caps = fState ? VMMDEV_GUEST_SUPPORTS_SEAMLESS : 0;
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| 48 | rc = vbglR3GRPerform(&vmmreqGuestCaps.header);
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| 49 | #ifdef DEBUG
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| 50 | if (RT_SUCCESS(rc))
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| 51 | LogRel(("Successfully set the seamless capability on the host.\n"));
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| 52 | else
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| 53 | LogRel(("Failed to set the seamless capability on the host, rc = %Rrc.\n", rc));
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| 54 | #endif
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| 55 | return rc;
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| 56 | }
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| 57 |
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| 58 | /**
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| 59 | * Wait for a seamless mode change event.
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| 60 | *
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| 61 | * @returns IPRT status value
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| 62 | * @retval pMode on success, the seamless mode to switch into (i.e. disabled, visible region
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| 63 | * or host window)
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| 64 | */
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| 65 | VBGLR3DECL(int) VbglR3SeamlessWaitEvent(VMMDevSeamlessMode *pMode)
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| 66 | {
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| 67 | VBoxGuestWaitEventInfo waitEvent;
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| 68 | int rc;
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| 69 |
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| 70 | AssertPtrReturn(pMode, VERR_INVALID_PARAMETER);
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| 71 | waitEvent.u32TimeoutIn = RT_INDEFINITE_WAIT;
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| 72 | waitEvent.u32EventMaskIn = VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST;
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| 73 | rc = vbglR3DoIOCtl(VBOXGUEST_IOCTL_WAITEVENT, &waitEvent, sizeof(waitEvent));
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| 74 | if (RT_SUCCESS(rc))
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| 75 | {
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| 76 | /* did we get the right event? */
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| 77 | if (waitEvent.u32EventFlagsOut & VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST)
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| 78 | {
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| 79 | VMMDevSeamlessChangeRequest seamlessChangeRequest;
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| 80 |
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| 81 | /* get the seamless change request */
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| 82 | vmmdevInitRequest(&seamlessChangeRequest.header, VMMDevReq_GetSeamlessChangeRequest);
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| 83 | seamlessChangeRequest.eventAck = VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST;
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| 84 | rc = vbglR3GRPerform(&seamlessChangeRequest.header);
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| 85 | if (RT_SUCCESS(rc))
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| 86 | {
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| 87 | *pMode = seamlessChangeRequest.mode;
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| 88 | return VINF_SUCCESS;
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| 89 | }
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| 90 | }
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| 91 | else
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| 92 | rc = VERR_TRY_AGAIN;
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| 93 | }
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| 94 | return rc;
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| 95 | }
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| 96 |
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| 97 | /**
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| 98 | * Inform the host about the visible region
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| 99 | *
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| 100 | * @returns IPRT status code
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| 101 | * @param cRects number of rectangles in the list of visible rectangles
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| 102 | * @param pRects list of visible rectangles on the guest display
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| 103 | *
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| 104 | * @todo A scatter-gather version of vbglR3GRPerform would be nice, so that we don't have
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| 105 | * to copy our rectangle and header data into a single structure and perform an
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| 106 | * additional allocation.
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| 107 | */
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| 108 | VBGLR3DECL(int) VbglR3SeamlessSendRects(uint32_t cRects, PRTRECT pRects)
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| 109 | {
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| 110 | VMMDevVideoSetVisibleRegion *pReq;
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| 111 | int rc;
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| 112 |
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| 113 | if (0 == cRects)
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| 114 | return VINF_SUCCESS;
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| 115 | rc = vbglR3GRAlloc((VMMDevRequestHeader **)&pReq,
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| 116 | sizeof(VMMDevVideoSetVisibleRegion) + (cRects - 1) * sizeof(RTRECT),
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| 117 | VMMDevReq_VideoSetVisibleRegion);
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| 118 | if (RT_SUCCESS(rc))
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| 119 | {
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| 120 | pReq->cRect = cRects;
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| 121 | memcpy(&pReq->Rect, pRects, cRects * sizeof(RTRECT));
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| 122 | rc = vbglR3GRPerform(&pReq->header);
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| 123 | vbglR3GRFree(&pReq->header);
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| 124 | if (RT_SUCCESS(rc))
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| 125 | {
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| 126 | if (RT_SUCCESS(pReq->header.rc))
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| 127 | return VINF_SUCCESS;
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| 128 | rc = pReq->header.rc;
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| 129 | }
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| 130 | }
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| 131 | return rc;
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| 132 | }
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| 133 |
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