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
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
/*
* Copyright (c) 2010 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Ali Saidi
* William Wang
*/
/** @file
* Declaration of a VNC input
*/
#ifndef __BASE_VNC_VNC_INPUT_HH__
#define __BASE_VNC_VNC_INPUT_HH__
#include <iostream>
#include "base/vnc/convert.hh"
#include "base/bitmap.hh"
#include "params/VncInput.hh"
#include "sim/sim_object.hh"
/**
* A device that expects to receive input from the vnc server should derrive
* (through mulitple inheritence if necessary from VncKeyboard or VncMouse
* and call setKeyboard() or setMouse() respectively on the vnc server.
*/
class VncKeyboard
{
public:
/**
* Called when the vnc server receives a key press event from the
* client.
* @param key the key passed is an x11 keysym
* @param down is the key now down or up?
*/
virtual void keyPress(uint32_t key, bool down) = 0;
};
class VncMouse
{
public:
/**
* called whenever the mouse moves or it's button state changes
* buttons is a simple mask with each button (0-8) corresponding to
* a bit position in the byte with 1 being down and 0 being up
* @param x the x position of the mouse
* @param y the y position of the mouse
* @param buttos the button state as described above
*/
virtual void mouseAt(uint16_t x, uint16_t y, uint8_t buttons) = 0;
};
class VncInput : public SimObject
{
public:
/** Client -> Server message IDs */
enum ClientMessages {
ClientSetPixelFormat = 0,
ClientSetEncodings = 2,
ClientFrameBufferUpdate = 3,
ClientKeyEvent = 4,
ClientPointerEvent = 5,
ClientCutText = 6
};
struct PixelFormat {
uint8_t bpp;
uint8_t depth;
uint8_t bigendian;
uint8_t truecolor;
uint16_t redmax;
uint16_t greenmax;
uint16_t bluemax;
uint8_t redshift;
uint8_t greenshift;
uint8_t blueshift;
uint8_t padding[3];
} M5_ATTR_PACKED;
struct PixelFormatMessage {
uint8_t type;
uint8_t padding[3];
PixelFormat px;
} M5_ATTR_PACKED;
struct PixelEncodingsMessage {
uint8_t type;
uint8_t padding;
uint16_t num_encodings;
} M5_ATTR_PACKED;
struct FrameBufferUpdateReq {
uint8_t type;
uint8_t incremental;
uint16_t x;
uint16_t y;
uint16_t width;
uint16_t height;
} M5_ATTR_PACKED;
struct KeyEventMessage {
uint8_t type;
uint8_t down_flag;
uint8_t padding[2];
uint32_t key;
} M5_ATTR_PACKED;
struct PointerEventMessage {
uint8_t type;
uint8_t button_mask;
uint16_t x;
uint16_t y;
} M5_ATTR_PACKED;
struct ClientCutTextMessage {
uint8_t type;
uint8_t padding[3];
uint32_t length;
} M5_ATTR_PACKED;
typedef VncInputParams Params;
VncInput(const Params *p);
/** Set the address of the frame buffer we are going to show.
* To avoid copying, just have the display controller
* tell us where the data is instead of constanly copying it around
* @param rfb frame buffer that we're going to use
*/
void
setFramebufferAddr(uint8_t* rfb)
{
fbPtr = rfb;
}
/** Set up the device that would like to receive notifications when keys are
* pressed in the vnc client keyboard
* @param _keyboard an object that derrives from VncKeyboard
*/
void setKeyboard(VncKeyboard *_keyboard) { keyboard = _keyboard; }
/** Setup the device that would like to receive notifications when mouse
* movements or button presses are received from the vnc client.
* @param _mouse an object that derrives from VncMouse
*/
void setMouse(VncMouse *_mouse) { mouse = _mouse; }
/** What is the width of the screen we're displaying.
* This is used for pointer/tablet devices that need to know to calculate
* the correct value to send to the device driver.
* @return the width of the simulated screen
*/
uint16_t videoWidth() const { return _videoWidth; }
/** What is the height of the screen we're displaying.
* This is used for pointer/tablet devices that need to know to calculate
* the correct value to send to the device driver.
* @return the height of the simulated screen
*/
uint16_t videoHeight() const { return _videoHeight; }
/** The frame buffer uses this call to notify the vnc server that
* the frame buffer has been updated and a new image needs to be sent to the
* client
*/
virtual void setDirty()
{
if (captureEnabled)
captureFrameBuffer();
}
/** Set the mode of the data the frame buffer will be sending us
* @param mode the mode
*/
virtual void setFrameBufferParams(VideoConvert::Mode mode, uint16_t width, uint16_t height);
protected:
/** The device to notify when we get key events */
VncKeyboard *keyboard;
/** The device to notify when we get mouse events */
VncMouse *mouse;
/** The video converter that transforms data for us */
VideoConvert *vc;
/** pointer to the actual data that is stored in the frame buffer device */
uint8_t* fbPtr;
/** The mode of data we're getting frame buffer in */
VideoConvert::Mode videoMode;
/** the width of the frame buffer we are sending to the client */
uint16_t _videoWidth;
/** the height of the frame buffer we are sending to the client */
uint16_t _videoHeight;
/** Flag indicating whether to capture snapshots of frame buffer or not */
bool captureEnabled;
/** Current frame number being captured to a file */
int captureCurrentFrame;
/** Directory to store captured frames to */
std::string captureOutputDirectory;
/** Computed hash of the last captured frame */
uint64_t captureLastHash;
/** Cached bitmap object for writing out frame buffers to file */
Bitmap *captureBitmap;
/** Captures the current frame buffer to a file */
void captureFrameBuffer();
};
#endif
|
