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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/* $Id: DisplayUtils.cpp $ */
/** @file
* Implementation of IDisplay helpers, currently only used in VBoxSVC.
*/
/*
* Copyright (C) 2010-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#include <DisplayUtils.h>
#include <iprt/log.h>
#include <VBox/err.h>
#include <VBox/vmm/ssm.h>
#include <VBoxVideo.h>
int readSavedDisplayScreenshot(SsmStream &ssmStream, const Utf8Str &strStateFilePath,
uint32_t u32Type, uint8_t **ppu8Data, uint32_t *pcbData,
uint32_t *pu32Width, uint32_t *pu32Height)
{
LogFlowFunc(("u32Type = %d [%s]\n", u32Type, strStateFilePath.c_str()));
/** @todo cache read data */
if (strStateFilePath.isEmpty())
{
/* No saved state data. */
return VERR_NOT_SUPPORTED;
}
uint8_t *pu8Data = NULL;
uint32_t cbData = 0;
uint32_t u32Width = 0;
uint32_t u32Height = 0;
PSSMHANDLE pSSM;
int vrc = ssmStream.open(strStateFilePath.c_str(), false /*fWrite*/, &pSSM);
if (RT_SUCCESS(vrc))
{
uint32_t uVersion;
vrc = SSMR3Seek(pSSM, "DisplayScreenshot", 1100 /*iInstance*/, &uVersion);
if (RT_SUCCESS(vrc))
{
if (uVersion == sSSMDisplayScreenshotVer)
{
uint32_t cBlocks;
vrc = SSMR3GetU32(pSSM, &cBlocks);
AssertRCReturn(vrc, vrc);
for (uint32_t i = 0; i < cBlocks; i++)
{
uint32_t cbBlock;
vrc = SSMR3GetU32(pSSM, &cbBlock);
AssertRCBreak(vrc);
uint32_t typeOfBlock;
vrc = SSMR3GetU32(pSSM, &typeOfBlock);
AssertRCBreak(vrc);
LogFlowFunc(("[%d] type %d, size %d bytes\n", i, typeOfBlock, cbBlock));
if (typeOfBlock == u32Type)
{
if (cbBlock > 2 * sizeof(uint32_t))
{
cbData = (uint32_t)(cbBlock - 2 * sizeof(uint32_t));
pu8Data = (uint8_t *)RTMemAlloc(cbData);
if (pu8Data == NULL)
{
vrc = VERR_NO_MEMORY;
break;
}
vrc = SSMR3GetU32(pSSM, &u32Width);
AssertRCBreak(vrc);
vrc = SSMR3GetU32(pSSM, &u32Height);
AssertRCBreak(vrc);
vrc = SSMR3GetMem(pSSM, pu8Data, cbData);
AssertRCBreak(vrc);
}
else
{
/* No saved state data. */
vrc = VERR_NOT_SUPPORTED;
}
break;
}
else
{
/* displaySSMSaveScreenshot did not write any data, if
* cbBlock was == 2 * sizeof (uint32_t).
*/
if (cbBlock > 2 * sizeof (uint32_t))
{
vrc = SSMR3Skip(pSSM, cbBlock);
AssertRCBreak(vrc);
}
}
}
}
else
{
vrc = VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
}
}
ssmStream.close();
}
if (RT_SUCCESS(vrc))
{
if (u32Type == 0 && cbData % 4 != 0)
{
/* Bitmap is 32bpp, so data is invalid. */
vrc = VERR_SSM_UNEXPECTED_DATA;
}
}
if (RT_SUCCESS(vrc))
{
*ppu8Data = pu8Data;
*pcbData = cbData;
*pu32Width = u32Width;
*pu32Height = u32Height;
LogFlowFunc(("cbData %d, u32Width %d, u32Height %d\n", cbData, u32Width, u32Height));
}
LogFlowFunc(("vrc %Rrc\n", vrc));
return vrc;
}
void freeSavedDisplayScreenshot(uint8_t *pu8Data)
{
/** @todo not necessary when caching is implemented. */
RTMemFree(pu8Data);
}
int readSavedGuestScreenInfo(SsmStream &ssmStream, const Utf8Str &strStateFilePath,
uint32_t u32ScreenId, uint32_t *pu32OriginX, uint32_t *pu32OriginY,
uint32_t *pu32Width, uint32_t *pu32Height, uint16_t *pu16Flags)
{
LogFlowFunc(("u32ScreenId = %d [%s]\n", u32ScreenId, strStateFilePath.c_str()));
/** @todo cache read data */
if (strStateFilePath.isEmpty())
{
/* No saved state data. */
return VERR_NOT_SUPPORTED;
}
PSSMHANDLE pSSM;
int vrc = ssmStream.open(strStateFilePath.c_str(), false /*fWrite*/, &pSSM);
if (RT_SUCCESS(vrc))
{
uint32_t uVersion;
vrc = SSMR3Seek(pSSM, "DisplayData", 0 /*iInstance*/, &uVersion);
if (RT_SUCCESS(vrc))
{
/* Starting from sSSMDisplayVer2 we have pu32Width and pu32Height.
* Starting from sSSMDisplayVer3 we have all the rest of parameters we need. */
if (uVersion >= sSSMDisplayVer2)
{
uint32_t cMonitors;
SSMR3GetU32(pSSM, &cMonitors);
if (u32ScreenId > cMonitors)
{
vrc = VERR_INVALID_PARAMETER;
}
else
{
if (uVersion == sSSMDisplayVer2)
{
/* Skip all previous monitors, each 5 uint32_t, and the first 3 uint32_t entries. */
SSMR3Skip(pSSM, u32ScreenId * 5 * sizeof(uint32_t) + 3 * sizeof(uint32_t));
SSMR3GetU32(pSSM, pu32Width);
SSMR3GetU32(pSSM, pu32Height);
*pu32OriginX = 0;
*pu32OriginY = 0;
*pu16Flags = VBVA_SCREEN_F_ACTIVE;
}
else
{
/* Skip all previous monitors, each 8 uint32_t, and the first 3 uint32_t entries. */
SSMR3Skip(pSSM, u32ScreenId * 8 * sizeof(uint32_t) + 3 * sizeof(uint32_t));
SSMR3GetU32(pSSM, pu32Width);
SSMR3GetU32(pSSM, pu32Height);
SSMR3GetU32(pSSM, pu32OriginX);
SSMR3GetU32(pSSM, pu32OriginY);
uint32_t u32Flags = 0;
SSMR3GetU32(pSSM, &u32Flags);
*pu16Flags = (uint16_t)u32Flags;
}
}
}
else
{
vrc = VERR_NOT_SUPPORTED;
}
}
ssmStream.close();
}
LogFlowFunc(("vrc %Rrc\n", vrc));
return vrc;
}
|
