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source: code/trunk/src/external/ois/linux/EventHelpers.cpp @ 6883

Last change on this file since 6883 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

Rev	Line
[1505]	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
[5695]	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;
[1505]	53	using namespace OIS;
	54
	55	class DeviceComponentInfo
	56	{
	57	public:
[5695]	58	vector<int> buttons, relAxes, absAxes, hats;
[1505]	59	};
	60
[5695]	61	bool inline isBitSet(unsigned char bits[], unsigned int bit)
[1505]	62	{
[5695]	63	return (bits[(bit)/(sizeof(unsigned char)8)] >> ((bit)%(sizeof(unsigned char)8))) & 1;
[1505]	64	}
[5695]	65
[1505]	66	//-----------------------------------------------------------------------------//
	67	DeviceComponentInfo getComponentInfo( int deviceID )
	68	{
[5695]	69	unsigned char ev_bits[1 + EV_MAX/8/sizeof(unsigned char)];
	70	memset( ev_bits, 0, sizeof(ev_bits) );
[1505]	71
[5695]	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
[1505]	80	DeviceComponentInfo components;
	81
	82	for (int i = 0; i < EV_MAX; i++)
	83	{
[5695]	84	if( isBitSet(ev_bits, i) )
[1505]	85	{
[5695]	86	// Absolute axis.
	87	if(i == EV_ABS)
[1505]	88	{
[5695]	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++)
[1505]	101	{
[5695]	102	if( isBitSet(abs_bits, j) )
[1505]	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	}
[5695]	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) )
[1505]	139	{
[5695]	140	components.relAxes.push_back(j);
[1505]	141	}
[5695]	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) )
[1505]	160	{
[5695]	161	components.buttons.push_back(j);
[1505]	162	}
	163	}
	164	}
	165	}
	166	}
	167
	168	return components;
	169	}
	170
	171	//-----------------------------------------------------------------------------//
	172	bool EventUtils::isJoyStick( int deviceID, JoyStickInfo &js )
	173	{
[5695]	174	if( deviceID == -1 )
	175	OIS_EXCEPT( E_General, "Error with File Descriptor" );
[1505]	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
[5695]	184	cout << endl << "Displaying ButtonMapping Status:" << endl;
[1505]	185	#endif
[5695]	186	for(vector<int>::iterator i = info.buttons.begin(), e = info.buttons.end(); i != e; ++i )
[1505]	187	{
	188	//Check to ensure we find at least one joy only button
[5695]	189	if( (i >= BTN_JOYSTICK && i < BTN_GAMEPAD)
	190	\|\| (i >= BTN_GAMEPAD && i < BTN_DIGI)
	191	\|\| (i >= BTN_WHEEL && i < KEY_OK) )
[1505]	192	joyButtonFound = true;
	193
	194	js.button_map[*i] = buttons++;
	195
	196	#ifdef OIS_LINUX_JOY_DEBUG
[5695]	197	cout << "Button Mapping ID (hex): " << hex << *i
	198	<< " OIS Button Num: " << dec << buttons-1 << endl;
[1505]	199	#endif
	200	}
[5695]	201	#ifdef OIS_LINUX_JOY_DEBUG
	202	cout << endl;
	203	#endif
[1505]	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();
[5695]	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
[1505]	218
	219	//Map the Axes
	220	#ifdef OIS_LINUX_JOY_DEBUG
[5695]	221	cout << endl << "Displaying AxisMapping Status:" << endl;
[1505]	222	#endif
	223	int axes = 0;
[5695]	224	for(vector<int>::iterator i = info.absAxes.begin(), e = info.absAxes.end(); i != e; ++i )
[1505]	225	{
	226	js.axis_map[*i] = axes;
	227
[5695]	228	#ifdef OIS_LINUX_JOY_DEBUG
	229	cout << "EventUtils::isJoyStick(" << deviceID
	230	<< ") : Reading device absolute axis #" << *i << " features" << endl;
	231	#endif
	232
[1505]	233	input_absinfo absinfo;
[5695]	234	if (ioctl(deviceID, EVIOCGABS(*i), &absinfo) == -1)
	235	OIS_EXCEPT( E_General, "Could not read device absolute axis features");
[1505]	236	js.axis_range[axes] = Range(absinfo.minimum, absinfo.maximum);
	237
	238	#ifdef OIS_LINUX_JOY_DEBUG
[5695]	239	cout << "Axis Mapping ID (hex): " << hex << *i
	240	<< " OIS Axis Num: " << dec << axes << endl;
[1505]	241	#endif
	242
	243	++axes;
	244	}
	245	}
	246
	247	return joyButtonFound;
	248	}
	249
	250	//-----------------------------------------------------------------------------//
[5695]	251	string EventUtils::getName( int deviceID )
[1505]	252	{
[5695]	253	#ifdef OIS_LINUX_JOY_DEBUG
	254	cout << "EventUtils::getName(" << deviceID
	255	<< ") : Reading device name" << endl;
	256	#endif
	257
[1505]	258	char name[OIS_DEVICE_NAME];
[5695]	259	if (ioctl(deviceID, EVIOCGNAME(OIS_DEVICE_NAME), name) == -1)
	260	OIS_EXCEPT( E_General, "Could not read device name");
	261	return string(name);
[1505]	262	}
	263
	264	//-----------------------------------------------------------------------------//
[5695]	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	//-----------------------------------------------------------------------------//
[1505]	295	void EventUtils::enumerateForceFeedback( int deviceID, LinuxForceFeedback** ff )
	296	{
	297	//Linux Event to OIS Event Mappings
[5695]	298	map<int, Effect::EType> typeMap;
[1505]	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
[5695]	312	map<int, Effect::EForce> forceMap;
[1505]	313	forceMap[FF_CONSTANT] = Effect::ConstantForce;
[5695]	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;
[1505]	325
	326	//Remove any previously existing memory and create fresh
	327	removeForceFeedback( ff );
[5695]	328	*ff = new LinuxForceFeedback(deviceID);
[1505]	329
[5695]	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));
[1505]	333
[5695]	334	#ifdef OIS_LINUX_JOY_DEBUG
	335	cout << "EventUtils::enumerateForceFeedback(" << deviceID
	336	<< ") : Reading device force feedback features" << endl;
	337	#endif
[1505]	338
[5695]	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
[1505]	350	//FF Axes
[5695]	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
[1505]	354
	355	//FF Effects
[5695]	356	for( int effect = FF_EFFECT_MIN; effect <= FF_WAVEFORM_MAX; effect++ )
[1505]	357	{
[5695]	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))
[1505]	364	{
[5695]	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] );
[1505]	370	}
	371	}
	372
[5695]	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
[1505]	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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