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
226
227
228
229
230
231
232
233
|
/*
* Copyright (C) 2010-2012 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.
*/
#ifndef __NULL_FRAMEBUFFER_H
#define __NULL_FRAMEBUFFER_H
#include <VBox/com/VirtualBox.h>
#include <iprt/alloc.h>
class NullFB : VBOX_SCRIPTABLE_IMPL(IFramebuffer)
{
public:
NullFB()
:
mScreen(NULL), mBuffer(NULL),
mUsesGuestVRAM(false),
mWidth(0), mHeight(0)
#ifndef VBOX_WITH_XPCOM
, refcnt(0)
#endif
{}
virtual ~NullFB()
{
if (mBuffer)
RTMemFree(mBuffer);
}
#ifndef VBOX_WITH_XPCOM
STDMETHOD_(ULONG, AddRef)() {
return ::InterlockedIncrement (&refcnt);
}
STDMETHOD_(ULONG, Release)() {
long cnt = ::InterlockedDecrement (&refcnt);
if (cnt == 0)
delete this;
return cnt;
}
#endif
VBOX_SCRIPTABLE_DISPATCH_IMPL(IFramebuffer)
NS_DECL_ISUPPORTS
// public methods only for internal purposes
HRESULT init ()
{
RequestResize(0, FramebufferPixelFormat_Opaque, 0, 0, 0, 640, 480, 0);
return S_OK;
}
STDMETHOD(COMGETTER(Width))(ULONG *width)
{
if (!width)
return E_POINTER;
*width = mWidth;
return S_OK;
}
STDMETHOD(COMGETTER(Height))(ULONG *height)
{
if (!height)
return E_POINTER;
*height = mHeight;
return S_OK;
}
STDMETHOD(Lock)()
{
return S_OK;
}
STDMETHOD(Unlock)()
{
return S_OK;
}
STDMETHOD(COMGETTER(Address))(BYTE **address)
{
if (!address)
return E_POINTER;
*address = mScreen;
return S_OK;
}
STDMETHOD(COMGETTER(BitsPerPixel))(ULONG *bitsPerPixel)
{
if (!bitsPerPixel)
return E_POINTER;
*bitsPerPixel = mBitsPerPixel;
return S_OK;
}
STDMETHOD(COMGETTER(BytesPerLine))(ULONG *bytesPerLine)
{
if (!bytesPerLine)
return E_POINTER;
*bytesPerLine = mBytesPerLine;
return S_OK;
}
STDMETHOD(COMGETTER(PixelFormat)) (ULONG *pixelFormat)
{
if (!pixelFormat)
return E_POINTER;
*pixelFormat = mPixelFormat;
return S_OK;
}
STDMETHOD(COMGETTER(UsesGuestVRAM)) (BOOL *usesGuestVRAM)
{
if (!usesGuestVRAM)
return E_POINTER;
*usesGuestVRAM = mUsesGuestVRAM;
return S_OK;
}
STDMETHOD(COMGETTER(HeightReduction)) (ULONG *heightReduction)
{
if (!heightReduction)
return E_POINTER;
/* no reduction */
*heightReduction = 0;
return S_OK;
}
STDMETHOD(COMGETTER(Overlay)) (IFramebufferOverlay **aOverlay)
{
if (!aOverlay)
return E_POINTER;
*aOverlay = 0;
return S_OK;
}
STDMETHOD(COMGETTER(WinId)) (LONG64 *winId)
{
if (!winId)
return E_POINTER;
*winId = 0;
return S_OK;
}
STDMETHOD(NotifyUpdate)(ULONG x, ULONG y, ULONG w, ULONG h)
{
return S_OK;
}
STDMETHOD(RequestResize)(ULONG aScreenId,
ULONG pixelFormat,
BYTE *vram,
ULONG bitsPerPixel,
ULONG bytesPerLine,
ULONG w,
ULONG h,
BOOL *finished)
{
if (mBuffer)
{
RTMemFree(mBuffer);
mBuffer = NULL;
}
mWidth = w;
mHeight = h;
mPixelFormat = pixelFormat;
if (mPixelFormat == FramebufferPixelFormat_Opaque)
{
mBitsPerPixel = 32;
mBytesPerLine = w * 4;
mBuffer = (uint8_t*)RTMemAllocZ(mBytesPerLine * h);
mScreen = mBuffer;
mUsesGuestVRAM = false;
}
else
{
mBytesPerLine = bytesPerLine;
mBitsPerPixel = bitsPerPixel;
mScreen = (uint8_t*)vram;
mUsesGuestVRAM = true;
}
if (finished)
*finished = true;
return S_OK;
}
STDMETHOD(VideoModeSupported)(ULONG width, ULONG height, ULONG bpp, BOOL *supported)
{
if (!supported)
return E_POINTER;
*supported = true;
return S_OK;
}
STDMETHOD(GetVisibleRegion)(BYTE *rectangles, ULONG count, ULONG *countCopied)
{
if (!rectangles)
return E_POINTER;
*rectangles = 0;
return S_OK;
}
STDMETHOD(SetVisibleRegion)(BYTE *rectangles, ULONG count)
{
if (!rectangles)
return E_POINTER;
return S_OK;
}
STDMETHOD(ProcessVHWACommand)(BYTE *pCommand)
{
return E_NOTIMPL;
}
STDMETHOD(Notify3DEvent)(ULONG uType, BYTE *pReserved)
{
return E_NOTIMPL;
}
private:
/** Guest framebuffer pixel format */
ULONG mPixelFormat;
/** Guest framebuffer color depth */
ULONG mBitsPerPixel;
/** Guest framebuffer line length */
ULONG mBytesPerLine;
/* VRAM pointer */
uint8_t *mScreen;
/* VRAM buffer */
uint8_t *mBuffer;
bool mUsesGuestVRAM;
ULONG mWidth, mHeight;
#ifndef VBOX_WITH_XPCOM
long refcnt;
#endif
};
#endif // __NULL_FRAMEBUFFER_H
|
