| 1 | /* $Id: VBoxGuestR3LibSeamless.cpp 26425 2010-02-11 11:37:08Z 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 Sun Microsystems, Inc.
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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 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | *
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| 26 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 28 | * additional information or have any questions.
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| 29 | */
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| 30 |
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| 31 |
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| 32 | /*******************************************************************************
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| 33 | * Header Files *
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| 34 | *******************************************************************************/
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| 35 | #include <iprt/assert.h>
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| 36 | #include <iprt/string.h>
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| 37 |
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| 38 | #include <VBox/VMMDev.h>
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| 39 | #include <VBox/log.h>
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| 40 |
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| 41 | #include "VBGLR3Internal.h"
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| 42 |
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| 43 |
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| 44 | /**
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| 45 | * Tell the host that we support (or no longer support) seamless mode.
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| 46 | *
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| 47 | * @returns IPRT status value
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| 48 | * @param fState whether or not we support seamless mode
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| 49 | */
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| 50 | VBGLR3DECL(int) VbglR3SeamlessSetCap(bool fState)
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| 51 | {
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| 52 | if (fState)
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| 53 | return VbglR3SetGuestCaps(VMMDEV_GUEST_SUPPORTS_SEAMLESS, 0);
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| 54 | return VbglR3SetGuestCaps(0, VMMDEV_GUEST_SUPPORTS_SEAMLESS);
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| 55 | }
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| 56 |
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| 57 | /**
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| 58 | * Wait for a seamless mode change event.
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| 59 | *
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| 60 | * @returns IPRT status value
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| 61 | * @retval pMode on success, the seamless mode to switch into (i.e. disabled, visible region
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| 62 | * or host window)
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| 63 | */
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| 64 | VBGLR3DECL(int) VbglR3SeamlessWaitEvent(VMMDevSeamlessMode *pMode)
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| 65 | {
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| 66 | VBoxGuestWaitEventInfo waitEvent;
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| 67 | int rc;
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| 68 |
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| 69 | AssertPtrReturn(pMode, VERR_INVALID_PARAMETER);
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| 70 | waitEvent.u32TimeoutIn = RT_INDEFINITE_WAIT;
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| 71 | waitEvent.u32EventMaskIn = VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST;
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| 72 | waitEvent.u32Result = VBOXGUEST_WAITEVENT_ERROR;
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| 73 | waitEvent.u32EventFlagsOut = 0;
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| 74 | rc = vbglR3DoIOCtl(VBOXGUEST_IOCTL_WAITEVENT, &waitEvent, sizeof(waitEvent));
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| 75 | if (RT_SUCCESS(rc))
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| 76 | {
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| 77 | /* did we get the right event? */
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| 78 | if (waitEvent.u32EventFlagsOut & VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST)
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| 79 | {
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| 80 | VMMDevSeamlessChangeRequest seamlessChangeRequest;
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| 81 |
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| 82 | /* get the seamless change request */
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| 83 | vmmdevInitRequest(&seamlessChangeRequest.header, VMMDevReq_GetSeamlessChangeRequest);
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| 84 | seamlessChangeRequest.eventAck = VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST;
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| 85 | rc = vbglR3GRPerform(&seamlessChangeRequest.header);
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| 86 | if (RT_SUCCESS(rc))
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| 87 | {
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| 88 | *pMode = seamlessChangeRequest.mode;
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| 89 | return VINF_SUCCESS;
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| 90 | }
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| 91 | }
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| 92 | else
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| 93 | rc = VERR_TRY_AGAIN;
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| 94 | }
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| 95 | return rc;
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| 96 | }
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| 97 |
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| 98 | /**
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| 99 | * Inform the host about the visible region
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| 100 | *
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| 101 | * @returns IPRT status code
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| 102 | * @param cRects number of rectangles in the list of visible rectangles
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| 103 | * @param pRects list of visible rectangles on the guest display
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| 104 | *
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| 105 | * @todo A scatter-gather version of vbglR3GRPerform would be nice, so that we don't have
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| 106 | * to copy our rectangle and header data into a single structure and perform an
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| 107 | * additional allocation.
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| 108 | */
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| 109 | VBGLR3DECL(int) VbglR3SeamlessSendRects(uint32_t cRects, PRTRECT pRects)
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| 110 | {
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| 111 | VMMDevVideoSetVisibleRegion *pReq;
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| 112 | int rc;
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| 113 |
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| 114 | if (!cRects || !pRects)
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| 115 | return VINF_SUCCESS;
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| 116 | rc = vbglR3GRAlloc((VMMDevRequestHeader **)&pReq,
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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 | pReq->cRect = cRects;
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| 122 | memcpy(&pReq->Rect, pRects, cRects * sizeof(RTRECT));
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| 123 | rc = vbglR3GRPerform(&pReq->header);
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| 124 | if (RT_SUCCESS(rc))
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| 125 | rc = pReq->header.rc;
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| 126 | vbglR3GRFree(&pReq->header);
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| 127 | }
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| 128 | return rc;
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| 129 | }
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| 130 |
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