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source: code/trunk/src/external/ois/linux/EventHelpers.cpp @ 9755

Last change on this file since 9755 was 5781, checked in by rgrieder, 16 years ago
Reverted trunk again. We might want to find a way to delete these revisions again (x3n's changes are still available as diff in the commit mails).
Property svn:eol-style set to `native`
File size: 11.6 KB

Line
1	/*
2	The zlib/libpng License
3
4	Copyright (c) 2005-2007 Phillip Castaneda (pjcast -- www.wreckedgames.com)
5
6	This software is provided 'as-is', without any express or implied warranty. In no event will
7	the authors be held liable for any damages arising from the use of this software.
8
9	Permission is granted to anyone to use this software for any purpose, including commercial
10	applications, and to alter it and redistribute it freely, subject to the following
11	restrictions:
12
13	1. The origin of this software must not be misrepresented; you must not claim that
14	you wrote the original software. If you use this software in a product,
15	an acknowledgment in the product documentation would be appreciated but is
16	not required.
17
18	2. Altered source versions must be plainly marked as such, and must not be
19	misrepresented as being the original software.
20
21	3. This notice may not be removed or altered from any source distribution.
22	*/
23	#include "linux/EventHelpers.h"
24	#include "linux/LinuxPrereqs.h"
25	#include "linux/LinuxForceFeedback.h"
26	#include "OISException.h"
27	#include "OISJoyStick.h"
28
29	#include <linux/input.h>
30	#include <cstring>
31
32	//#define OIS_LINUX_JOY_DEBUG
33
34	#ifdef OIS_LINUX_JOY_DEBUG
35	# include <iostream>
36	#endif
37
38	// Fixes for missing macros in input.h
39	#ifndef FF_EFFECT_MIN
40	#define FF_EFFECT_MIN FF_RUMBLE
41	#endif
42	#ifndef FF_EFFECT_MAX
43	#define FF_EFFECT_MAX FF_RAMP
44	#endif
45	#ifndef FF_WAVEFORM_MIN
46	#define FF_WAVEFORM_MIN FF_SQUARE
47	#endif
48	#ifndef FF_WAVEFORM_MAX
49	#define FF_WAVEFORM_MAX FF_CUSTOM
50	#endif
51
52	using namespace std;
53	using namespace OIS;
54
55	class DeviceComponentInfo
56	{
57	public:
58	vector<int> buttons, relAxes, absAxes, hats;
59	};
60
61	bool inline isBitSet(unsigned char bits[], unsigned int bit)
62	{
63	return (bits[(bit)/(sizeof(unsigned char)8)] >> ((bit)%(sizeof(unsigned char)8))) & 1;
64	}
65
66	//-----------------------------------------------------------------------------//
67	DeviceComponentInfo getComponentInfo( int deviceID )
68	{
69	unsigned char ev_bits[1 + EV_MAX/8/sizeof(unsigned char)];
70	memset( ev_bits, 0, sizeof(ev_bits) );
71
72	//Read "all" (hence 0) components of the device
73	#ifdef OIS_LINUX_JOY_DEBUG
74	cout << "EventUtils::getComponentInfo(" << deviceID
75	<< ") : Reading device events features" << endl;
76	#endif
77	if (ioctl(deviceID, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits) == -1)
78	OIS_EXCEPT( E_General, "Could not read device events features");
79
80	DeviceComponentInfo components;
81
82	for (int i = 0; i < EV_MAX; i++)
83	{
84	if( isBitSet(ev_bits, i) )
85	{
86	// Absolute axis.
87	if(i == EV_ABS)
88	{
89	unsigned char abs_bits[1 + ABS_MAX/8/sizeof(unsigned char)];
90	memset( abs_bits, 0, sizeof(abs_bits) );
91
92	#ifdef OIS_LINUX_JOY_DEBUG
93	cout << "EventUtils::getComponentInfo(" << deviceID
94	<< ") : Reading device absolute axis features" << endl;
95	#endif
96
97	if (ioctl(deviceID, EVIOCGBIT(i, sizeof(abs_bits)), abs_bits) == -1)
98	OIS_EXCEPT( E_General, "Could not read device absolute axis features");
99
100	for (int j = 0; j < ABS_MAX; j++)
101	{
102	if( isBitSet(abs_bits, j) )
103	{
104	//input_absinfo abInfo;
105	//ioctl( fd, EVIOCGABS(j), abInfo );
106	if( j >= ABS_HAT0X && j <= ABS_HAT3Y )
107	{
108	components.hats.push_back(j);
109	}
110	else
111	{
112	components.absAxes.push_back(j);
113	//input_absinfo absinfo;
114	//ioctl(deviceID, EVIOCGABS(j), &absinfo);
115	//We cannot actually change these values :\|
116	//absinfo.minimum = JoyStick::MIN_AXIS;
117	//absinfo.maximum = JoyStick::MAX_AXIS;
118	//ioctl(deviceID, EVIOCSABS(j), &absinfo);
119	}
120	}
121	}
122	}
123	else if(i == EV_REL)
124	{
125	unsigned char rel_bits[1 + REL_MAX/8/sizeof(unsigned char)];
126	memset( rel_bits, 0, sizeof(rel_bits) );
127
128	#ifdef OIS_LINUX_JOY_DEBUG
129	cout << "EventUtils::getComponentInfo(" << deviceID
130	<< ") : Reading device relative axis features" << endl;
131	#endif
132
133	if (ioctl(deviceID, EVIOCGBIT(i, sizeof(rel_bits)), rel_bits) == -1)
134	OIS_EXCEPT( E_General, "Could not read device relative axis features");
135
136	for (int j = 0; j < REL_MAX; j++)
137	{
138	if( isBitSet(rel_bits, j) )
139	{
140	components.relAxes.push_back(j);
141	}
142	}
143	}
144	else if(i == EV_KEY)
145	{
146	unsigned char key_bits[1 + KEY_MAX/8/sizeof(unsigned char)];
147	memset( key_bits, 0, sizeof(key_bits) );
148
149	#ifdef OIS_LINUX_JOY_DEBUG
150	cout << "EventUtils::getComponentInfo(" << deviceID
151	<< ") : Reading device buttons features" << endl;
152	#endif
153
154	if (ioctl(deviceID, EVIOCGBIT(i, sizeof(key_bits)), key_bits) == -1)
155	OIS_EXCEPT( E_General, "Could not read device buttons features");
156
157	for (int j = 0; j < KEY_MAX; j++)
158	{
159	if( isBitSet(key_bits, j) )
160	{
161	components.buttons.push_back(j);
162	}
163	}
164	}
165	}
166	}
167
168	return components;
169	}
170
171	//-----------------------------------------------------------------------------//
172	bool EventUtils::isJoyStick( int deviceID, JoyStickInfo &js )
173	{
174	if( deviceID == -1 )
175	OIS_EXCEPT( E_General, "Error with File Descriptor" );
176
177	DeviceComponentInfo info = getComponentInfo( deviceID );
178
179	int buttons = 0;
180	bool joyButtonFound = false;
181	js.button_map.clear();
182
183	#ifdef OIS_LINUX_JOY_DEBUG
184	cout << endl << "Displaying ButtonMapping Status:" << endl;
185	#endif
186	for(vector<int>::iterator i = info.buttons.begin(), e = info.buttons.end(); i != e; ++i )
187	{
188	//Check to ensure we find at least one joy only button
189	if( (i >= BTN_JOYSTICK && i < BTN_GAMEPAD)
190	\|\| (i >= BTN_GAMEPAD && i < BTN_DIGI)
191	\|\| (i >= BTN_WHEEL && i < KEY_OK) )
192	joyButtonFound = true;
193
194	js.button_map[*i] = buttons++;
195
196	#ifdef OIS_LINUX_JOY_DEBUG
197	cout << "Button Mapping ID (hex): " << hex << *i
198	<< " OIS Button Num: " << dec << buttons-1 << endl;
199	#endif
200	}
201	#ifdef OIS_LINUX_JOY_DEBUG
202	cout << endl;
203	#endif
204
205	//Joy Buttons found, so it must be a joystick or pad
206	if( joyButtonFound )
207	{
208	js.joyFileD = deviceID;
209	js.vendor = getName(deviceID);
210	js.buttons = buttons;
211	js.axes = info.relAxes.size() + info.absAxes.size();
212	js.hats = info.hats.size();
213	#ifdef OIS_LINUX_JOY_DEBUG
214	cout << endl << "Device name:" << js.vendor << endl;
215	cout << "Device unique Id:" << getUniqueId(deviceID) << endl;
216	cout << "Device physical location:" << getPhysicalLocation(deviceID) << endl;
217	#endif
218
219	//Map the Axes
220	#ifdef OIS_LINUX_JOY_DEBUG
221	cout << endl << "Displaying AxisMapping Status:" << endl;
222	#endif
223	int axes = 0;
224	for(vector<int>::iterator i = info.absAxes.begin(), e = info.absAxes.end(); i != e; ++i )
225	{
226	js.axis_map[*i] = axes;
227
228	#ifdef OIS_LINUX_JOY_DEBUG
229	cout << "EventUtils::isJoyStick(" << deviceID
230	<< ") : Reading device absolute axis #" << *i << " features" << endl;
231	#endif
232
233	input_absinfo absinfo;
234	if (ioctl(deviceID, EVIOCGABS(*i), &absinfo) == -1)
235	OIS_EXCEPT( E_General, "Could not read device absolute axis features");
236	js.axis_range[axes] = Range(absinfo.minimum, absinfo.maximum);
237
238	#ifdef OIS_LINUX_JOY_DEBUG
239	cout << "Axis Mapping ID (hex): " << hex << *i
240	<< " OIS Axis Num: " << dec << axes << endl;
241	#endif
242
243	++axes;
244	}
245	}
246
247	return joyButtonFound;
248	}
249
250	//-----------------------------------------------------------------------------//
251	string EventUtils::getName( int deviceID )
252	{
253	#ifdef OIS_LINUX_JOY_DEBUG
254	cout << "EventUtils::getName(" << deviceID
255	<< ") : Reading device name" << endl;
256	#endif
257
258	char name[OIS_DEVICE_NAME];
259	if (ioctl(deviceID, EVIOCGNAME(OIS_DEVICE_NAME), name) == -1)
260	OIS_EXCEPT( E_General, "Could not read device name");
261	return string(name);
262	}
263
264	//-----------------------------------------------------------------------------//
265	string EventUtils::getUniqueId( int deviceID )
266	{
267	#ifdef OIS_LINUX_JOY_DEBUG
268	cout << "EventUtils::getUniqueId(" << deviceID
269	<< ") : Reading device unique Id" << endl;
270	#endif
271
272	#define OIS_DEVICE_UNIQUE_ID 128
273	char uId[OIS_DEVICE_UNIQUE_ID];
274	if (ioctl(deviceID, EVIOCGUNIQ(OIS_DEVICE_UNIQUE_ID), uId) == -1)
275	OIS_EXCEPT( E_General, "Could not read device unique Id");
276	return string(uId);
277	}
278
279	//-----------------------------------------------------------------------------//
280	string EventUtils::getPhysicalLocation( int deviceID )
281	{
282	#ifdef OIS_LINUX_JOY_DEBUG
283	cout << "EventUtils::getPhysicalLocation(" << deviceID
284	<< ") : Reading device physical location" << endl;
285	#endif
286
287	#define OIS_DEVICE_PHYSICAL_LOCATION 128
288	char physLoc[OIS_DEVICE_PHYSICAL_LOCATION];
289	if (ioctl(deviceID, EVIOCGPHYS(OIS_DEVICE_PHYSICAL_LOCATION), physLoc) == -1)
290	OIS_EXCEPT( E_General, "Could not read device physical location");
291	return string(physLoc);
292	}
293
294	//-----------------------------------------------------------------------------//
295	void EventUtils::enumerateForceFeedback( int deviceID, LinuxForceFeedback** ff )
296	{
297	//Linux Event to OIS Event Mappings
298	map<int, Effect::EType> typeMap;
299	typeMap[FF_CONSTANT] = Effect::Constant;
300	typeMap[FF_RAMP] = Effect::Ramp;
301	typeMap[FF_SPRING] = Effect::Spring;
302	typeMap[FF_FRICTION] = Effect::Friction;
303	typeMap[FF_SQUARE] = Effect::Square;
304	typeMap[FF_TRIANGLE] = Effect::Triangle;
305	typeMap[FF_SINE] = Effect::Sine;
306	typeMap[FF_SAW_UP] = Effect::SawToothUp;
307	typeMap[FF_SAW_DOWN] = Effect::SawToothDown;
308	typeMap[FF_DAMPER] = Effect::Damper;
309	typeMap[FF_INERTIA] = Effect::Inertia;
310	typeMap[FF_CUSTOM] = Effect::Custom;
311
312	map<int, Effect::EForce> forceMap;
313	forceMap[FF_CONSTANT] = Effect::ConstantForce;
314	forceMap[FF_RAMP] = Effect::RampForce;
315	forceMap[FF_SPRING] = Effect::ConditionalForce;
316	forceMap[FF_FRICTION] = Effect::ConditionalForce;
317	forceMap[FF_SQUARE] = Effect::PeriodicForce;
318	forceMap[FF_TRIANGLE] = Effect::PeriodicForce;
319	forceMap[FF_SINE] = Effect::PeriodicForce;
320	forceMap[FF_SAW_UP] = Effect::PeriodicForce;
321	forceMap[FF_SAW_DOWN] = Effect::PeriodicForce;
322	forceMap[FF_DAMPER] = Effect::ConditionalForce;
323	forceMap[FF_INERTIA] = Effect::ConditionalForce;
324	forceMap[FF_CUSTOM] = Effect::CustomForce;
325
326	//Remove any previously existing memory and create fresh
327	removeForceFeedback( ff );
328	*ff = new LinuxForceFeedback(deviceID);
329
330	//Read overall force feedback features
331	unsigned char ff_bits[1 + FF_MAX/8/sizeof(unsigned char)];
332	memset(ff_bits, 0, sizeof(ff_bits));
333
334	#ifdef OIS_LINUX_JOY_DEBUG
335	cout << "EventUtils::enumerateForceFeedback(" << deviceID
336	<< ") : Reading device force feedback features" << endl;
337	#endif
338
339	if (ioctl(deviceID, EVIOCGBIT(EV_FF, sizeof(ff_bits)), ff_bits) == -1)
340	OIS_EXCEPT( E_General, "Could not read device force feedback features");
341
342
343	#ifdef OIS_LINUX_JOY_DEBUG
344	cout << "FF bits: " << hex;
345	for (int i = 0; i < sizeof(ff_bits); i++)
346	cout << (int)ff_bits[i];
347	cout << endl << dec;
348	#endif
349
350	//FF Axes
351	//if( isBitSet(ff_bits, ABS_X) ) //X Axis
352	//if( isBitSet(ff_bits, ABS_Y) ) //Y Axis
353	//if( isBitSet(ff_bits, ABS_WHEEL) ) //Wheel
354
355	//FF Effects
356	for( int effect = FF_EFFECT_MIN; effect <= FF_WAVEFORM_MAX; effect++ )
357	{
358	// The RUMBLE force type is ignored, as periodic force one is more powerfull.
359	// The PERIODIC force type is processed later, for each associated periodic effect type.
360	if (effect == FF_RUMBLE \|\| effect == FF_PERIODIC)
361	continue;
362
363	if(isBitSet(ff_bits, effect))
364	{
365	#ifdef OIS_LINUX_JOY_DEBUG
366	cout << " Effect Type: " << Effect::getEffectTypeName(typeMap[effect]) << endl;
367	#endif
368
369	(*ff)->_addEffectTypes( forceMap[effect], typeMap[effect] );
370	}
371	}
372
373	//FF device properties
374	if (isBitSet(ff_bits, FF_GAIN))
375	(*ff)->_setGainSupport(true);
376
377	if (isBitSet(ff_bits, FF_AUTOCENTER))
378	(*ff)->_setAutoCenterSupport(true);
379
380	//Check to see if any effects were added, else destroy the pointer
381	const ForceFeedback::SupportedEffectList &list = (*ff)->getSupportedEffects();
382	if( list.size() == 0 )
383	removeForceFeedback( ff );
384	}
385
386	//-----------------------------------------------------------------------------//
387	void EventUtils::removeForceFeedback( LinuxForceFeedback** ff )
388	{
389	delete *ff;
390	*ff = 0;
391	}

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