-
Notifications
You must be signed in to change notification settings - Fork 16
/
XnEvent.h
305 lines (253 loc) · 13.7 KB
/
XnEvent.h
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
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
/****************************************************************************
* *
* OpenNI 1.1 Alpha *
* Copyright (C) 2011 PrimeSense Ltd. *
* *
* This file is part of OpenNI. *
* *
* OpenNI 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 3 of the License, or *
* (at your option) any later version. *
* *
* OpenNI 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 OpenNI. If not, see <http://www.gnu.org/licenses/>. *
* *
****************************************************************************/
#ifndef __XN_EVENT_H__
#define __XN_EVENT_H__
//---------------------------------------------------------------------------
// Includes
//---------------------------------------------------------------------------
#include "XnCallback.h"
#include "XnList.h"
#include "XnTypes.h"
#include "XnOSCpp.h"
//---------------------------------------------------------------------------
// Types
//---------------------------------------------------------------------------
class XnEventInterface
{
public:
XnEventInterface() {}
virtual ~XnEventInterface() {}
typedef XnStatus (XN_CALLBACK_TYPE* HandlerPtr)(void* pCookie);
virtual XnStatus Register(HandlerPtr pFunc, void* pCookie, XnCallbackHandle* pHandle = NULL) = 0;
virtual XnStatus Unregister(XnCallbackHandle handle) = 0;
};
class XnEvent : public XnEventInterface
{
public:
XnEvent() : m_hLock(0)
{
xnOSCreateCriticalSection(&m_hLock);
}
virtual ~XnEvent()
{
Clear();
xnOSCloseCriticalSection(&m_hLock);
}
XnStatus Register(HandlerPtr pFunc, void* pCookie, XnCallbackHandle* pHandle)
{
XnStatus nRetVal = XN_STATUS_OK;
XN_VALIDATE_INPUT_PTR(pFunc);
XnCallback* pCallback = NULL;
XN_VALIDATE_NEW(pCallback, XnCallback, (XnFuncPtr)pFunc, pCookie);
// always add to list of added (actual list will be updated in Raise method, to allow registering
// from a callback).
{
XnAutoCSLocker lock(m_hLock);
nRetVal = m_ToBeAdded.AddLast(pCallback);
}
if (nRetVal != XN_STATUS_OK)
{
XN_DELETE(pCallback);
return (nRetVal);
}
// return handle
if (pHandle != NULL)
{
*pHandle = pCallback;
}
return XN_STATUS_OK;
}
XnStatus Unregister(XnCallbackHandle handle)
{
XnStatus nRetVal = XN_STATUS_OK;
XnCallback* pObject = (XnCallback*)handle;
// add it to a temp list, to allow unregistering from a callback (actual list will be updated in raise
// function).
{
XnAutoCSLocker lock(m_hLock);
// try to remove it from the ToBeAdded list.
if (!RemoveCallback(m_ToBeAdded, pObject))
{
// it's not in this list, so it's probably in the main list
nRetVal = m_ToBeRemoved.AddLast(pObject);
}
}
XN_IS_STATUS_OK(nRetVal);
return XN_STATUS_OK;
}
XnStatus Clear()
{
ApplyListChanges();
for (XnCallbackPtrList::ConstIterator it = m_Handlers.begin(); it != m_Handlers.end(); ++it)
{
XnCallback* pCallback = *it;
XN_DELETE(pCallback);
}
m_Handlers.Clear();
m_ToBeRemoved.Clear();
m_ToBeAdded.Clear();
return (XN_STATUS_OK);
}
protected:
XnStatus ApplyListChanges()
{
// first add all
for (XnCallbackPtrList::ConstIterator it = m_ToBeAdded.begin(); it != m_ToBeAdded.end(); ++it)
{
m_Handlers.AddLast(*it);
}
m_ToBeAdded.Clear();
// and now remove
for (XnCallbackPtrList::ConstIterator it = m_ToBeRemoved.begin(); it != m_ToBeRemoved.end(); ++it)
{
XnCallback* pCallback = *it;
RemoveCallback(m_Handlers, pCallback);
}
m_ToBeRemoved.Clear();
return (XN_STATUS_OK);
}
#if (XN_PLATFORM == XN_PLATFORM_WIN32)
#pragma warning (push)
#pragma warning (disable: 4127)
#endif
XN_DECLARE_LIST(XnCallback*, XnCallbackPtrList)
#if (XN_PLATFORM == XN_PLATFORM_WIN32)
#pragma warning (pop)
#endif
XN_CRITICAL_SECTION_HANDLE m_hLock;
XnCallbackPtrList m_Handlers;
XnCallbackPtrList m_ToBeAdded;
XnCallbackPtrList m_ToBeRemoved;
private:
XnBool RemoveCallback(XnCallbackPtrList& list, XnCallback* pCallback)
{
XnCallbackPtrList::Iterator handlerIt = list.Find(pCallback);
if (handlerIt != list.end())
{
list.Remove(handlerIt);
XN_DELETE(pCallback);
return TRUE;
}
return FALSE;
}
};
#define _XN_RAISE_WITH_RET_CODE(args) \
nRetVal = pFunc(args pCallback->pCookie); \
if (nRetVal != XN_STATUS_OK) \
{ \
XnEvent::ApplyListChanges(); \
return (nRetVal); \
}
#define _XN_RAISE_NO_RET_CODE(args) \
pFunc(args pCallback->pCookie);
/**
* Declares a class inheriting from XnEvent, that can be used as an event with specific signature.
* It is highly recommended not to use this macro directly.
*/
#define _XN_DECLARE_EVENT_CLASS(_class, _interface, _retVal, _raise, _signature, _raise_sign) \
class _interface : protected XnEvent \
{ \
public: \
typedef _retVal (XN_CALLBACK_TYPE* HandlerPtr)(_signature); \
virtual XnStatus Register(HandlerPtr pFunc, void* pCookie, XnCallbackHandle* pHandle = NULL) = 0; \
virtual XnStatus Unregister(XnCallbackHandle handle) = 0; \
}; \
class _class : public _interface \
{ \
public: \
XnStatus Register(HandlerPtr pFunc, void* pCookie, XnCallbackHandle* pHandle = NULL) \
{ \
return XnEvent::Register((XnEvent::HandlerPtr)pFunc, pCookie, pHandle); \
} \
XnStatus Unregister(XnCallbackHandle handle) \
{ \
return XnEvent::Unregister(handle); \
} \
XnStatus Raise(_raise_sign) \
{ \
XnStatus nRetVal = XN_STATUS_OK; \
XnAutoCSLocker lock(m_hLock); \
XnEvent::ApplyListChanges(); \
XnEvent::XnCallbackPtrList::Iterator it = XnEvent::m_Handlers.begin(); \
for (; it != XnEvent::m_Handlers.end(); ++it) \
{ \
XnCallback* pCallback = *it; \
HandlerPtr pFunc = (HandlerPtr)pCallback->pFuncPtr; \
_raise \
} \
XnEvent::ApplyListChanges(); \
return (XN_STATUS_OK); \
} \
XnStatus Clear() { return XnEvent::Clear(); } \
};
#define _XN_SIGNATURE_0ARG()
#define _XN_FULL_SIGNATURE_0ARG() void* pCookie
#define _XN_ARGS_0ARG()
#define _XN_SIGNATURE_1ARG(_type1, _name1) _type1 _name1
#define _XN_FULL_SIGNATURE_1ARG(_type1, _name1) _type1 _name1, void* pCookie
#define _XN_ARGS_1ARG(_name1) _name1,
#define _XN_SIGNATURE_2ARG(_type1, _name1, _type2, _name2) _type1 _name1, _type2 _name2
#define _XN_FULL_SIGNATURE_2ARG(_type1, _name1, _type2, _name2) _type1 _name1, _type2 _name2, void* pCookie
#define _XN_ARGS_2ARG(_name1, _name2) _name1, _name2,
#define _XN_SIGNATURE_3ARG(_type1, _name1, _type2, _name2, _type3, _name3) _type1 _name1, _type2 _name2, _type3 _name3
#define _XN_FULL_SIGNATURE_3ARG(_type1, _name1, _type2, _name2, _type3, _name3) _type1 _name1, _type2 _name2, _type3 _name3, void* pCookie
#define _XN_ARGS_3ARG(_name1, _name2, _name3) _name1, _name2, _name3,
#define _XN_SIGNATURE_4ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4) _type1 _name1, _type2 _name2, _type3 _name3, _type4 _name4
#define _XN_FULL_SIGNATURE_4ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4) _type1 _name1, _type2 _name2, _type3 _name3, _type4 _name4, void* pCookie
#define _XN_ARGS_4ARG(_name1, _name2, _name3, _name4) _name1, _name2, _name3, _name4,
#define _XN_SIGNATURE_5ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4, _type5, _name5) _type1 _name1, _type2 _name2, _type3 _name3, _type4 _name4, _type5 _name5
#define _XN_FULL_SIGNATURE_5ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4, _type5, _name5) _type1 _name1, _type2 _name2, _type3 _name3, _type4 _name4, _type5 _name5, void* pCookie
#define _XN_ARGS_5ARG(_name1, _name2, _name3, _name4, _name5) _name1, _name2, _name3, _name4, _name5,
/** Declares an event class */
#if XN_PLATFORM == XN_PLATFORM_WIN32
#define XN_DECLARE_EVENT_0ARG(_class, _interface) \
__pragma(warning(push))\
__pragma(warning(disable:4189))\
_XN_DECLARE_EVENT_CLASS(_class, _interface, void, _XN_RAISE_NO_RET_CODE(_XN_ARGS_0ARG()), _XN_FULL_SIGNATURE_0ARG(), _XN_SIGNATURE_0ARG())\
__pragma(warning(pop))
#else
#define XN_DECLARE_EVENT_0ARG(_class, _interface) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, void, _XN_RAISE_NO_RET_CODE(_XN_ARGS_0ARG()), _XN_FULL_SIGNATURE_0ARG(), _XN_SIGNATURE_0ARG())
#endif
#define XN_DECLARE_EVENT_0ARG_RETVAL(_class, _interface) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, XnStatus, _XN_RAISE_WITH_RET_CODE(_XN_ARGS_0ARG()), _XN_FULL_SIGNATURE_0ARG(), _XN_SIGNATURE_0ARG())
#define XN_DECLARE_EVENT_1ARG(_class, _interface, _type1, _name1) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, void, _XN_RAISE_NO_RET_CODE(_XN_ARGS_1ARG(_name1)), _XN_FULL_SIGNATURE_1ARG(_type1, _name1), _XN_SIGNATURE_1ARG(_type1, _name1))
#define XN_DECLARE_EVENT_1ARG_RETVAL(_class, _interface, _type1, _name1) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, XnStatus, _XN_RAISE_WITH_RET_CODE(_XN_ARGS_1ARG(_name1)), _XN_FULL_SIGNATURE_1ARG(_type1, _name1), _XN_SIGNATURE_1ARG(_type1, _name1))
#define XN_DECLARE_EVENT_2ARG(_class, _interface, _type1, _name1, _type2, _name2) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, void, _XN_RAISE_NO_RET_CODE(_XN_ARGS_2ARG(_name1, _name2)), _XN_FULL_SIGNATURE_2ARG(_type1, _name1, _type2, _name2), _XN_SIGNATURE_2ARG(_type1, _name1, _type2, _name2))
#define XN_DECLARE_EVENT_2ARG_RETVAL(_class, _interface, _type1, _name1, _type2, _name2) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, XnStatus, _XN_RAISE_WITH_RET_CODE(_XN_ARGS_2ARG(_name1, _name2)), _XN_FULL_SIGNATURE_2ARG(_type1, _name1, _type2, _name2), _XN_SIGNATURE_2ARG(_type1, _name1, _type2, _name2))
#define XN_DECLARE_EVENT_3ARG(_class, _interface, _type1, _name1, _type2, _name2, _type3, _name3) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, void, _XN_RAISE_NO_RET_CODE(_XN_ARGS_3ARG(_name1, _name2, _name3)), _XN_FULL_SIGNATURE_3ARG(_type1, _name1, _type2, _name2, _type3, _name3), _XN_SIGNATURE_3ARG(_type1, _name1, _type2, _name2, _type3, _name3))
#define XN_DECLARE_EVENT_3ARG_RETVAL(_class, _interface, _type1, _name1, _type2, _name2, _type3, _name3) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, XnStatus, _XN_RAISE_WITH_RET_CODE(_XN_ARGS_3ARG(_name1, _name2, _name3)), _XN_FULL_SIGNATURE_3ARG(_type1, _name1, _type2, _name2, _type3, _name3), _XN_SIGNATURE_3ARG(_type1, _name1, _type2, _name2, _type3, _name3))
#define XN_DECLARE_EVENT_4ARG(_class, _interface, _type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, void, _XN_RAISE_NO_RET_CODE(_XN_ARGS_4ARG(_name1, _name2, _name3, _name4)), _XN_FULL_SIGNATURE_4ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4), _XN_SIGNATURE_4ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4))
#define XN_DECLARE_EVENT_4ARG_RETVAL(_class, _interface, _type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, XnStatus, _XN_RAISE_WITH_RET_CODE(_XN_ARGS_4ARG(_name1, _name2, _name3, _name4)), _XN_FULL_SIGNATURE_4ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4), _XN_SIGNATURE_4ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4))
#define XN_DECLARE_EVENT_5ARG(_class, _interface, _type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4, _type5, _name5) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, void, _XN_RAISE_NO_RET_CODE(_XN_ARGS_5ARG(_name1, _name2, _name3, _name4, _name5)), _XN_FULL_SIGNATURE_5ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4, _type5, _name5), _XN_SIGNATURE_5ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4, _type5, _name5))
#define XN_DECLARE_EVENT_5ARG_RETVAL(_class, _interface, _type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4, _type5, _name5) \
_XN_DECLARE_EVENT_CLASS(_class, _interface, XnStatus, _XN_RAISE_WITH_RET_CODE(_XN_ARGS_5ARG(_name1, _name2, _name3, _name4, _name5)), _XN_FULL_SIGNATURE_5ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4, _type5, _name5), _XN_SIGNATURE_5ARG(_type1, _name1, _type2, _name2, _type3, _name3, _type4, _name4, _type5, _name5))
#endif //__XN_EVENT_H__