diff options
Diffstat (limited to 'src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibSeamless.cpp')
| -rw-r--r-- | src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibSeamless.cpp | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibSeamless.cpp b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibSeamless.cpp new file mode 100644 index 00000000..78c19eb7 --- /dev/null +++ b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibSeamless.cpp @@ -0,0 +1,172 @@ +/* $Id: VBoxGuestR3LibSeamless.cpp $ */ +/** @file + * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, Seamless mode. + */ + +/* + * Copyright (C) 2007-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <iprt/assert.h> +#include <iprt/errcore.h> +#include <iprt/string.h> + +#include <VBox/log.h> + +#include "VBoxGuestR3LibInternal.h" + +#ifdef VBOX_VBGLR3_XFREE86 +/* Rather than try to resolve all the header file conflicts, I will just + prototype what we need here. */ +extern "C" void* xf86memcpy(void*,const void*,xf86size_t); +# undef memcpy +# define memcpy xf86memcpy +#endif /* VBOX_VBGLR3_XFREE86 */ + +/** + * Tell the host that we support (or no longer support) seamless mode. + * + * @returns IPRT status value + * @param fState whether or not we support seamless mode + */ +VBGLR3DECL(int) VbglR3SeamlessSetCap(bool fState) +{ + if (fState) + return VbglR3SetGuestCaps(VMMDEV_GUEST_SUPPORTS_SEAMLESS, 0); + return VbglR3SetGuestCaps(0, VMMDEV_GUEST_SUPPORTS_SEAMLESS); +} + +/** + * Wait for a seamless mode change event. + * + * @returns IPRT status value. + * @param[out] pMode On success, the seamless mode to switch into (i.e. + * disabled, visible region or host window). + */ +VBGLR3DECL(int) VbglR3SeamlessWaitEvent(VMMDevSeamlessMode *pMode) +{ + uint32_t fEvent = 0; + int rc; + + AssertPtrReturn(pMode, VERR_INVALID_PARAMETER); + rc = VbglR3WaitEvent(VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST, RT_INDEFINITE_WAIT, &fEvent); + if (RT_SUCCESS(rc)) + { + /* did we get the right event? */ + if (fEvent & VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST) + { + VMMDevSeamlessChangeRequest seamlessChangeRequest; + + /* get the seamless change request */ + vmmdevInitRequest(&seamlessChangeRequest.header, VMMDevReq_GetSeamlessChangeRequest); + seamlessChangeRequest.mode = (VMMDevSeamlessMode)-1; + seamlessChangeRequest.eventAck = VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST; + rc = vbglR3GRPerform(&seamlessChangeRequest.header); + if (RT_SUCCESS(rc)) + { + *pMode = seamlessChangeRequest.mode; + return VINF_SUCCESS; + } + } + else + rc = VERR_TRY_AGAIN; + } + else if ( rc == VERR_INTERRUPTED + || rc == VERR_TIMEOUT /* just in case */) + rc = VERR_TRY_AGAIN; + return rc; +} + +/** + * Request the last seamless mode switch from the host again. + * + * @returns IPRT status value. + * @param[out] pMode On success, the seamless mode that was switched + * into (i.e. disabled, visible region or host window). + */ +VBGLR3DECL(int) VbglR3SeamlessGetLastEvent(VMMDevSeamlessMode *pMode) +{ + VMMDevSeamlessChangeRequest seamlessChangeRequest; + int rc; + + AssertPtrReturn(pMode, VERR_INVALID_PARAMETER); + + /* get the seamless change request */ + vmmdevInitRequest(&seamlessChangeRequest.header, VMMDevReq_GetSeamlessChangeRequest); + seamlessChangeRequest.mode = (VMMDevSeamlessMode)-1; + seamlessChangeRequest.eventAck = VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST; + rc = vbglR3GRPerform(&seamlessChangeRequest.header); + if (RT_SUCCESS(rc)) + { + *pMode = seamlessChangeRequest.mode; + return VINF_SUCCESS; + } + return rc; +} + +/** + * Inform the host about the visible region + * + * @returns IPRT status code + * @param cRects number of rectangles in the list of visible rectangles + * @param pRects list of visible rectangles on the guest display + * + * @todo A scatter-gather version of vbglR3GRPerform would be nice, so that we don't have + * to copy our rectangle and header data into a single structure and perform an + * additional allocation. + * @todo Would that really gain us much, given that the rectangles may not + * be grouped at all, or in the format we need? Keeping the memory + * for our "single structure" around (re-alloc-ing it if necessary) + * sounds like a simpler optimisation if we need it. + */ +VBGLR3DECL(int) VbglR3SeamlessSendRects(uint32_t cRects, PRTRECT pRects) +{ + VMMDevVideoSetVisibleRegion *pReq; + int rc; + + AssertReturn(pRects || cRects == 0, VERR_INVALID_PARAMETER); + AssertMsgReturn(cRects <= _1M, ("%u\n", cRects), VERR_OUT_OF_RANGE); + + rc = vbglR3GRAlloc((VMMDevRequestHeader **)&pReq, + sizeof(VMMDevVideoSetVisibleRegion) + + cRects * sizeof(RTRECT) + - sizeof(RTRECT), + VMMDevReq_VideoSetVisibleRegion); + if (RT_SUCCESS(rc)) + { + pReq->cRect = cRects; + if (cRects) + memcpy(&pReq->Rect, pRects, cRects * sizeof(RTRECT)); + /* This will fail harmlessly for cRect == 0 and older host code */ + rc = vbglR3GRPerform(&pReq->header); + LogFunc(("Visible region request returned %Rrc, internal %Rrc.\n", + rc, pReq->header.rc)); + if (RT_SUCCESS(rc)) + rc = pReq->header.rc; + vbglR3GRFree(&pReq->header); + } + LogFunc(("Sending %u rectangles to the host: %Rrc\n", cRects, rc)); + return rc; +} + |