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
|
//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "LibMTDevInputDevice.h"
#include "TouchEvent.h"
#include "Player.h"
#include "AVGNode.h"
#include "TouchStatus.h"
#include "../base/Logger.h"
#include "../base/ObjectCounter.h"
#include "../base/Exception.h"
#include "../base/OSHelper.h"
#include <linux/input.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
extern "C" {
#include <mtdev.h>
#include <mtdev-mapping.h>
}
using namespace std;
namespace avg {
LibMTDevInputDevice::LibMTDevInputDevice()
: m_LastID(0),
m_pMTDevice(0)
{
}
LibMTDevInputDevice::~LibMTDevInputDevice()
{
if (m_pMTDevice) {
mtdev_close(m_pMTDevice);
delete m_pMTDevice;
}
}
void LibMTDevInputDevice::start()
{
string sDevice("/dev/input/event3");
getEnv("AVG_LINUX_MULTITOUCH_DEVICE", sDevice);
m_DeviceFD = ::open(sDevice.c_str(), O_RDONLY | O_NONBLOCK);
if (m_DeviceFD == -1) {
throw Exception(AVG_ERR_MT_INIT,
string("Linux multitouch event source: Could not open device file '")+
sDevice+"'. "+strerror(errno)+".");
}
m_pMTDevice = new mtdev;
int err = mtdev_open(m_pMTDevice, m_DeviceFD);
if (err == -1) {
throw Exception(AVG_ERR_MT_INIT,
string("Linux multitouch event source: Could not open mtdev '")+
sDevice+"'. "+strerror(errno)+".");
}
input_absinfo* pAbsInfo;
pAbsInfo = &(m_pMTDevice->caps.abs[MTDEV_POSITION_X]);
m_Dimensions.tl.x = pAbsInfo->minimum;
m_Dimensions.br.x = pAbsInfo->maximum;
pAbsInfo = &(m_pMTDevice->caps.abs[MTDEV_POSITION_Y]);
m_Dimensions.tl.y = pAbsInfo->minimum;
m_Dimensions.br.y = pAbsInfo->maximum;
MultitouchInputDevice::start();
AVG_TRACE(Logger::category::CONFIG, Logger::severity::INFO,
"Linux MTDev Multitouch event source created.");
}
std::vector<EventPtr> LibMTDevInputDevice::pollEvents()
{
struct input_event event;
static int curSlot = 0;
set<int> changedIDs;
while (mtdev_get(m_pMTDevice, m_DeviceFD, &event, 1) > 0) {
if (event.type == EV_SYN && event.code == SYN_REPORT) {
// cerr << ">> SYN_REPORT" << endl;
processEvents(changedIDs);
changedIDs.clear();
} else if (event.type == EV_ABS && event.code == ABS_MT_SLOT) {
// cerr << ">> slot " << event.value << endl;
curSlot = event.value;
} else {
TouchData* pTouch;
switch (event.code) {
case ABS_MT_TRACKING_ID:
// cerr << ">> ABS_MT_TRACKING_ID: " << event.value << endl;
pTouch = &(m_Slots[curSlot]);
if (event.value == -1) {
TouchStatusPtr pTouchStatus = getTouchStatus(pTouch->id);
// cerr << "up " << pTouch->id << endl;
if (pTouchStatus) {
// cerr << " --> remove" << endl;
TouchEventPtr pOldEvent = pTouchStatus->getLastEvent();
TouchEventPtr pUpEvent =
boost::dynamic_pointer_cast<TouchEvent>(
pOldEvent->cloneAs(Event::CURSOR_UP));
pTouchStatus->pushEvent(pUpEvent);
removeTouchStatus(pTouch->id);
}
pTouch->id = -1;
} else {
pTouch->id = event.value;
changedIDs.insert(curSlot);
}
break;
case ABS_MT_POSITION_X:
// cerr << ">> ABS_MT_POSITION_X: " << event.value << endl;
pTouch = &(m_Slots[curSlot]);
pTouch->pos.x = event.value;
changedIDs.insert(curSlot);
break;
case ABS_MT_POSITION_Y:
// cerr << ">> ABS_MT_POSITION_Y: " << event.value << endl;
pTouch = &(m_Slots[curSlot]);
pTouch->pos.y = event.value;
changedIDs.insert(curSlot);
break;
default:
break;
}
}
}
return MultitouchInputDevice::pollEvents();
}
void LibMTDevInputDevice::processEvents(const set<int>& changedIDs)
{
for (set<int>::iterator it = changedIDs.begin(); it != changedIDs.end(); ++it) {
map<int, TouchData>::iterator it2 = m_Slots.find(*it);
if (it2 != m_Slots.end()) {
const TouchData& touch = it2->second;
// cerr << "slot: " << *it << ", id: " << touch.id << ", pos: " << touch.pos
// << endl;
// AVG_ASSERT(touch.pos.x != 0);
if (touch.id != -1) {
TouchStatusPtr pTouchStatus = getTouchStatus(touch.id);
if (!pTouchStatus) {
// Down
m_LastID++;
TouchEventPtr pEvent = createEvent(m_LastID, Event::CURSOR_DOWN,
touch.pos);
// cerr << "down <" << touch.id << "> --> [" << m_LastID << "]" << endl;
addTouchStatus((long)touch.id, pEvent);
} else {
// cerr << "move <" << touch.id << "> --> " << touch.pos << endl;
// Move
TouchEventPtr pEvent = createEvent(0, Event::CURSOR_MOTION,
touch.pos);
pTouchStatus->pushEvent(pEvent);
}
}
}
}
}
TouchEventPtr LibMTDevInputDevice::createEvent(int id, Event::Type type, IntPoint pos)
{
glm::vec2 size(Player::get()->getScreenResolution());
glm::vec2 normPos(float(pos.x-m_Dimensions.tl.x)/m_Dimensions.width(),
float(pos.y-m_Dimensions.tl.y)/m_Dimensions.height());
IntPoint screenPos(int(normPos.x*size.x+0.5), int(normPos.y*size.y+0.5));
return TouchEventPtr(new TouchEvent(id, type, screenPos, Event::TOUCH));
}
}
|
