| 1 | /** $Id: VBoxGuestR3LibSeamless.cpp 5872 2007-11-28 18:46:35Z 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 | * innotek GmbH confidential
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| 10 | * All rights reserved
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| 11 | */
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| 12 |
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| 13 |
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| 14 | /*******************************************************************************
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| 15 | * Header Files *
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| 16 | *******************************************************************************/
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| 17 | #include <iprt/assert.h>
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| 18 |
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| 19 | #include <VBox/VBoxGuest.h>
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| 20 | #include <VBox/VBoxDev.h>
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| 21 | #include <VBox/log.h>
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| 22 |
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| 23 | #include <string.h>
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| 24 |
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| 25 | /* Move this to a header { */
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| 26 |
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| 27 | extern int vbglR3DoIOCtl(unsigned iFunction, void *pvData, size_t cbData);
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| 28 |
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| 29 | /* } */
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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 bState 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 bState)
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| 41 | {
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| 42 | VMMDevReqGuestCapabilities vmmreqGuestCaps = { {0} };
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| 43 | int rc = VINF_SUCCESS;
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| 44 |
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| 45 | vmmdevInitRequest(&vmmreqGuestCaps.header, VMMDevReq_ReportGuestCapabilities);
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| 46 | vmmreqGuestCaps.caps = bState ? VMMDEV_GUEST_SUPPORTS_SEAMLESS : 0;
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| 47 | rc = VbglR3GRPerform(&vmmreqGuestCaps.header);
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| 48 | #ifdef DEBUG
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| 49 | if (RT_SUCCESS(rc))
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| 50 | {
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| 51 | LogRel(("Successfully enabled seamless mode on the host.\n"));
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| 52 | }
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| 53 | else
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| 54 | {
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| 55 | LogRel(("Failed to enabled seamless mode on the host, rc = %Vrc.\n", rc));
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| 56 | }
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| 57 | #endif
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| 58 | return rc;
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| 59 | }
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| 60 |
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| 61 | /**
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| 62 | * Wait for a seamless mode change event.
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| 63 | *
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| 64 | * @returns IPRT status value
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| 65 | * @retval pMode on success, the seamless mode to switch into (i.e. disabled, visible region
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| 66 | * or host window)
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| 67 | */
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| 68 | VBGLR3DECL(int) VbglR3SeamlessWaitEvent(VMMDevSeamlessMode *pMode)
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| 69 | {
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| 70 | VBoxGuestWaitEventInfo waitEvent;
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| 71 | int rc;
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| 72 |
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| 73 | AssertReturn(pMode != 0, VERR_INVALID_PARAMETER);
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| 74 | waitEvent.u32TimeoutIn = 0;
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| 75 | waitEvent.u32EventMaskIn = VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST;
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| 76 | rc = vbglR3DoIOCtl(VBOXGUEST_IOCTL_WAITEVENT, &waitEvent, sizeof(waitEvent));
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| 77 | if (RT_SUCCESS(rc))
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| 78 | {
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| 79 | /* did we get the right event? */
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| 80 | if (waitEvent.u32EventFlagsOut & VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST)
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| 81 | {
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| 82 | VMMDevSeamlessChangeRequest seamlessChangeRequest;
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| 83 |
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| 84 | /* get the seamless change request */
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| 85 | vmmdevInitRequest(&seamlessChangeRequest.header, VMMDevReq_GetSeamlessChangeRequest);
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| 86 | seamlessChangeRequest.eventAck = VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST;
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| 87 | rc = VbglR3GRPerform(&seamlessChangeRequest.header);
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| 88 | if (RT_SUCCESS(rc))
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| 89 | {
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| 90 | *pMode = seamlessChangeRequest.mode;
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| 91 | return VINF_SUCCESS;
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| 92 | }
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| 93 | }
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| 94 | else
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| 95 | rc = VERR_TRY_AGAIN;
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| 96 | }
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| 97 | return rc;
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| 98 | }
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| 99 |
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| 100 | /**
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| 101 | * Inform the host about the visible region
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| 102 | *
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| 103 | * @returns IPRT status code
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| 104 | * @param cRects number of rectangles in the list of visible rectangles
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| 105 | * @param pRects list of visible rectangles on the guest display
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| 106 | *
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| 107 | * @todo A scatter-gather version of VbglR3GRPerform would be nice, so that we don't have
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| 108 | * to copy our rectangle and header data into a single structure and perform an
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| 109 | * additional allocation.
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| 110 | */
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| 111 | VBGLR3DECL(int) VbglR3SeamlessSendRects(uint32_t cRects, PRTRECT pRects)
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| 112 | {
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| 113 | VMMDevVideoSetVisibleRegion *req;
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| 114 | int rc;
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| 115 |
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| 116 | rc = VbglR3GRAlloc ((VMMDevRequestHeader **)&req,
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| 117 | sizeof (VMMDevVideoSetVisibleRegion) + (cRects-1)*sizeof(RTRECT),
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| 118 | VMMDevReq_VideoSetVisibleRegion);
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| 119 | if (RT_SUCCESS(rc))
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| 120 | {
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| 121 | req->cRect = cRects;
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| 122 | memcpy(&req->Rect, pRects, cRects*sizeof(RTRECT));
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| 123 | rc = VbglR3GRPerform (&req->header);
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| 124 | VbglR3GRFree(&req->header);
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| 125 | if (RT_SUCCESS(rc))
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| 126 | {
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| 127 | if (RT_SUCCESS(req->header.rc))
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| 128 | {
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| 129 | return VINF_SUCCESS;
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| 130 | }
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| 131 | else
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| 132 | rc = req->header.rc;
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| 133 | }
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| 134 | }
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| 135 | return rc;
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| 136 | }
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