1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
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;
}
|
