| 1 | /* | 
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| 2 | The zlib/libpng License | 
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| 3 |  | 
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| 4 | Copyright (c) 2005-2007 Phillip Castaneda (pjcast -- www.wreckedgames.com) | 
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| 5 |  | 
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| 6 | This software is provided 'as-is', without any express or implied warranty. In no event will | 
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| 7 | the authors be held liable for any damages arising from the use of this software. | 
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| 8 |  | 
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| 9 | Permission is granted to anyone to use this software for any purpose, including commercial | 
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| 10 | applications, and to alter it and redistribute it freely, subject to the following | 
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| 11 | restrictions: | 
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| 12 |  | 
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| 13 | 1. The origin of this software must not be misrepresented; you must not claim that | 
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| 14 | you wrote the original software. If you use this software in a product, | 
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| 15 | an acknowledgment in the product documentation would be appreciated but is | 
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| 16 | not required. | 
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| 17 |  | 
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| 18 | 2. Altered source versions must be plainly marked as such, and must not be | 
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| 19 | misrepresented as being the original software. | 
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| 20 |  | 
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| 21 | 3. This notice may not be removed or altered from any source distribution. | 
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| 22 | */ | 
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| 23 | #include "linux/LinuxForceFeedback.h" | 
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| 24 | #include "OISException.h" | 
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| 25 |  | 
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| 26 | #include <cstdlib> | 
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| 27 | #include <errno.h> | 
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| 28 | #include <memory.h> | 
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| 29 | #include <unistd.h> | 
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| 30 |  | 
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| 31 | using namespace OIS; | 
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| 32 |  | 
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| 33 | // 0 = No trace; 1 = Important traces; 2 = Debug traces | 
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| 34 | #define OIS_LINUX_JOYFF_DEBUG 1 | 
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| 35 |  | 
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| 36 | #ifdef OIS_LINUX_JOYFF_DEBUG | 
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| 37 | # include <iostream> | 
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| 38 | using namespace std; | 
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| 39 | #endif | 
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| 40 |  | 
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| 41 | //--------------------------------------------------------------// | 
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| 42 | LinuxForceFeedback::LinuxForceFeedback(int deviceID) : | 
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| 43 | ForceFeedback(), mJoyStick(deviceID) | 
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| 44 | { | 
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| 45 | } | 
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| 46 |  | 
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| 47 | //--------------------------------------------------------------// | 
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| 48 | LinuxForceFeedback::~LinuxForceFeedback() | 
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| 49 | { | 
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| 50 | // Unload all effects. | 
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| 51 | for(EffectList::iterator i = mEffectList.begin(); i != mEffectList.end(); ++i ) | 
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| 52 | { | 
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| 53 | struct ff_effect *linEffect = i->second; | 
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| 54 | if( linEffect ) | 
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| 55 | _unload(linEffect->id); | 
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| 56 | } | 
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| 57 |  | 
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| 58 | mEffectList.clear(); | 
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| 59 | } | 
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| 60 |  | 
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| 61 | //--------------------------------------------------------------// | 
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| 62 | unsigned short LinuxForceFeedback::getFFMemoryLoad() | 
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| 63 | { | 
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| 64 | int nEffects = -1; | 
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| 65 | if (ioctl(mJoyStick, EVIOCGEFFECTS, &nEffects) == -1) | 
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| 66 | OIS_EXCEPT(E_General, "Unknown error reading max number of uploaded effects."); | 
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| 67 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 68 | cout << "LinuxForceFeedback("<< mJoyStick | 
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| 69 | << ") : Read device max number of uploaded effects : " << nEffects << endl; | 
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| 70 | #endif | 
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| 71 |  | 
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| 72 | return (unsigned short int)(nEffects > 0 ? 100.0*mEffectList.size()/nEffects : 100); | 
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| 73 | } | 
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| 74 |  | 
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| 75 | //--------------------------------------------------------------// | 
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| 76 | void LinuxForceFeedback::setMasterGain(float value) | 
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| 77 | { | 
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| 78 | if (!mSetGainSupport) | 
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| 79 | { | 
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| 80 | #if (OIS_LINUX_JOYFF_DEBUG > 0) | 
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| 81 | cout << "LinuxForceFeedback("<< mJoyStick << ") : Setting master gain " | 
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| 82 | << "is not supported by the device" << endl; | 
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| 83 | #endif | 
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| 84 | return; | 
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| 85 | } | 
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| 86 |  | 
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| 87 | struct input_event event; | 
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| 88 |  | 
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| 89 | memset(&event, 0, sizeof(event)); | 
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| 90 | event.type = EV_FF; | 
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| 91 | event.code = FF_GAIN; | 
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| 92 | if (value < 0.0) | 
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| 93 | value = 0.0; | 
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| 94 | else if (value > 1.0) | 
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| 95 | value = 1.0; | 
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| 96 | event.value = (__s32)(value * 0xFFFFUL); | 
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| 97 |  | 
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| 98 | #if (OIS_LINUX_JOYFF_DEBUG > 0) | 
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| 99 | cout << "LinuxForceFeedback("<< mJoyStick << ") : Setting master gain to " | 
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| 100 | << value << " => " << event.value << endl; | 
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| 101 | #endif | 
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| 102 |  | 
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| 103 | if (write(mJoyStick, &event, sizeof(event)) != sizeof(event)) { | 
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| 104 | OIS_EXCEPT(E_General, "Unknown error changing master gain."); | 
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| 105 | } | 
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| 106 | } | 
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| 107 |  | 
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| 108 | //--------------------------------------------------------------// | 
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| 109 | void LinuxForceFeedback::setAutoCenterMode(bool enabled) | 
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| 110 | { | 
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| 111 | if (!mSetAutoCenterSupport) | 
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| 112 | { | 
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| 113 | #if (OIS_LINUX_JOYFF_DEBUG > 0) | 
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| 114 | cout << "LinuxForceFeedback("<< mJoyStick << ") : Setting auto-center mode " | 
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| 115 | << "is not supported by the device" << endl; | 
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| 116 | #endif | 
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| 117 | return; | 
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| 118 | } | 
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| 119 |  | 
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| 120 | struct input_event event; | 
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| 121 |  | 
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| 122 | memset(&event, 0, sizeof(event)); | 
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| 123 | event.type = EV_FF; | 
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| 124 | event.code = FF_AUTOCENTER; | 
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| 125 | event.value = (__s32)(enabled*0xFFFFFFFFUL); | 
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| 126 |  | 
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| 127 | #if (OIS_LINUX_JOYFF_DEBUG > 0) | 
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| 128 | cout << "LinuxForceFeedback("<< mJoyStick << ") : Toggling auto-center to " | 
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| 129 | << enabled << " => 0x" << hex << event.value << dec << endl; | 
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| 130 | #endif | 
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| 131 |  | 
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| 132 | if (write(mJoyStick, &event, sizeof(event)) != sizeof(event)) { | 
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| 133 | OIS_EXCEPT(E_General, "Unknown error toggling auto-center."); | 
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| 134 | } | 
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| 135 | } | 
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| 136 |  | 
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| 137 | //--------------------------------------------------------------// | 
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| 138 | void LinuxForceFeedback::upload( const Effect* effect ) | 
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| 139 | { | 
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| 140 | switch( effect->force ) | 
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| 141 | { | 
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| 142 | case OIS::Effect::ConstantForce: | 
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| 143 | _updateConstantEffect(effect); | 
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| 144 | break; | 
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| 145 | case OIS::Effect::ConditionalForce: | 
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| 146 | _updateConditionalEffect(effect); | 
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| 147 | break; | 
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| 148 | case OIS::Effect::PeriodicForce: | 
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| 149 | _updatePeriodicEffect(effect); | 
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| 150 | break; | 
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| 151 | case OIS::Effect::RampForce: | 
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| 152 | _updateRampEffect(effect); | 
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| 153 | break; | 
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| 154 | case OIS::Effect::CustomForce: | 
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| 155 | //_updateCustomEffect(effect); | 
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| 156 | //break; | 
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| 157 | default: | 
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| 158 | OIS_EXCEPT(E_NotImplemented, "Requested force not implemented yet, sorry!"); | 
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| 159 | break; | 
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| 160 | } | 
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| 161 | } | 
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| 162 |  | 
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| 163 | //--------------------------------------------------------------// | 
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| 164 | void LinuxForceFeedback::modify( const Effect* effect ) | 
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| 165 | { | 
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| 166 | upload(effect); | 
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| 167 | } | 
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| 168 |  | 
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| 169 | //--------------------------------------------------------------// | 
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| 170 | void LinuxForceFeedback::remove( const Effect* effect ) | 
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| 171 | { | 
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| 172 | //Get the effect - if it exists | 
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| 173 | EffectList::iterator i = mEffectList.find(effect->_handle); | 
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| 174 | if( i != mEffectList.end() ) | 
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| 175 | { | 
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| 176 | struct ff_effect *linEffect = i->second; | 
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| 177 | if( linEffect ) | 
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| 178 | { | 
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| 179 | _stop(effect->_handle); | 
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| 180 |  | 
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| 181 | _unload(effect->_handle); | 
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| 182 |  | 
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| 183 | free(linEffect); | 
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| 184 |  | 
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| 185 | mEffectList.erase(i); | 
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| 186 | } | 
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| 187 | else | 
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| 188 | mEffectList.erase(i); | 
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| 189 | } | 
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| 190 | } | 
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| 191 |  | 
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| 192 | //--------------------------------------------------------------// | 
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| 193 | // To Signed16/Unsigned15 safe conversions | 
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| 194 | #define MaxUnsigned15Value 0x7FFF | 
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| 195 | #define toUnsigned15(value) \ | 
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| 196 | (__u16)((value) < 0 ? 0 : ((value) > MaxUnsigned15Value ? MaxUnsigned15Value : (value))) | 
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| 197 |  | 
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| 198 | #define MaxSigned16Value  0x7FFF | 
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| 199 | #define MinSigned16Value -0x7FFF | 
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| 200 | #define toSigned16(value) \ | 
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| 201 | (__s16)((value) < MinSigned16Value ? MinSigned16Value : ((value) > MaxSigned16Value ? MaxSigned16Value : (value))) | 
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| 202 |  | 
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| 203 | // OIS to Linux duration | 
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| 204 | #define LinuxInfiniteDuration 0xFFFF | 
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| 205 | #define OISDurationUnitMS 1000 // OIS duration unit (microseconds), expressed in milliseconds (theLinux duration unit) | 
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| 206 |  | 
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| 207 | // linux/input.h : All duration values are expressed in ms. Values above 32767 ms (0x7fff) | 
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| 208 | //                 should not be used and have unspecified results. | 
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| 209 | #define LinuxDuration(oisDuration) ((oisDuration) == Effect::OIS_INFINITE ? LinuxInfiniteDuration \ | 
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| 210 | : toUnsigned15((oisDuration)/OISDurationUnitMS)) | 
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| 211 |  | 
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| 212 |  | 
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| 213 | // OIS to Linux levels | 
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| 214 | #define OISMaxLevel 10000 | 
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| 215 | #define LinuxMaxLevel 0x7FFF | 
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| 216 |  | 
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| 217 | // linux/input.h : Valid range for the attack and fade levels is 0x0000 - 0x7fff | 
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| 218 | #define LinuxPositiveLevel(oisLevel) toUnsigned15(LinuxMaxLevel*(long)(oisLevel)/OISMaxLevel) | 
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| 219 |  | 
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| 220 | #define LinuxSignedLevel(oisLevel) toSigned16(LinuxMaxLevel*(long)(oisLevel)/OISMaxLevel) | 
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| 221 |  | 
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| 222 |  | 
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| 223 | //--------------------------------------------------------------// | 
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| 224 | void LinuxForceFeedback::_setCommonProperties(struct ff_effect *event, | 
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| 225 | struct ff_envelope *ffenvelope, | 
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| 226 | const Effect* effect, const Envelope *envelope ) | 
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| 227 | { | 
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| 228 | memset(event, 0, sizeof(struct ff_effect)); | 
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| 229 |  | 
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| 230 | if (envelope && ffenvelope && envelope->isUsed()) { | 
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| 231 | ffenvelope->attack_length = LinuxDuration(envelope->attackLength); | 
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| 232 | ffenvelope->attack_level = LinuxPositiveLevel(envelope->attackLevel); | 
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| 233 | ffenvelope->fade_length = LinuxDuration(envelope->fadeLength); | 
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| 234 | ffenvelope->fade_level = LinuxPositiveLevel(envelope->fadeLevel); | 
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| 235 | } | 
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| 236 |  | 
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| 237 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 238 | cout << endl; | 
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| 239 | if (envelope && ffenvelope) | 
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| 240 | { | 
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| 241 | cout << "  Enveloppe :" << endl | 
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| 242 | << "    AttackLen : " << envelope->attackLength | 
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| 243 | << " => " << ffenvelope->attack_length << endl | 
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| 244 | << "    AttackLvl : " << envelope->attackLevel | 
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| 245 | << " => " << ffenvelope->attack_level << endl | 
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| 246 | << "    FadeLen   : " << envelope->fadeLength | 
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| 247 | << " => " << ffenvelope->fade_length << endl | 
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| 248 | << "    FadeLvl   : " << envelope->fadeLevel | 
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| 249 | << " => " << ffenvelope->fade_level << endl; | 
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| 250 | } | 
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| 251 | #endif | 
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| 252 |  | 
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| 253 | event->direction = (__u16)(1 + (effect->direction*45.0+135.0)*0xFFFFUL/360.0); | 
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| 254 |  | 
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| 255 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 256 | cout << "  Direction : " << Effect::getDirectionName(effect->direction) | 
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| 257 | << " => 0x" << hex << event->direction << dec << endl; | 
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| 258 | #endif | 
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| 259 |  | 
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| 260 | // TODO trigger_button 0 vs. -1 | 
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| 261 | event->trigger.button = effect->trigger_button; // < 0 ? 0 : effect->trigger_button; | 
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| 262 | event->trigger.interval = LinuxDuration(effect->trigger_interval); | 
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| 263 |  | 
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| 264 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 265 | cout << "  Trigger :" << endl | 
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| 266 | << "    Button   : " << effect->trigger_button | 
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| 267 | << " => " << event->trigger.button << endl | 
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| 268 | << "    Interval : " << effect->trigger_interval | 
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| 269 | << " => " << event->trigger.interval << endl; | 
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| 270 | #endif | 
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| 271 |  | 
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| 272 | event->replay.length = LinuxDuration(effect->replay_length); | 
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| 273 | event->replay.delay = LinuxDuration(effect->replay_delay); | 
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| 274 |  | 
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| 275 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 276 | cout << "  Replay :" << endl | 
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| 277 | << "    Length : " << effect->replay_length | 
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| 278 | << " => " << event->replay.length << endl | 
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| 279 | << "    Delay  : " << effect->replay_delay | 
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| 280 | << " => " << event->replay.delay << endl; | 
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| 281 | #endif | 
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| 282 | } | 
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| 283 |  | 
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| 284 | //--------------------------------------------------------------// | 
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| 285 | void LinuxForceFeedback::_updateConstantEffect( const Effect* eff ) | 
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| 286 | { | 
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| 287 | struct ff_effect event; | 
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| 288 |  | 
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| 289 | ConstantEffect *effect = static_cast<ConstantEffect*>(eff->getForceEffect()); | 
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| 290 |  | 
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| 291 | _setCommonProperties(&event, &event.u.constant.envelope, eff, &effect->envelope); | 
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| 292 |  | 
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| 293 | event.type = FF_CONSTANT; | 
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| 294 | event.id = -1; | 
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| 295 |  | 
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| 296 | event.u.constant.level = LinuxSignedLevel(effect->level); | 
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| 297 |  | 
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| 298 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 299 | cout << "  Level : " << effect->level | 
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| 300 | << " => " << event.u.constant.level << endl; | 
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| 301 | #endif | 
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| 302 |  | 
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| 303 | _upload(&event, eff); | 
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| 304 | } | 
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| 305 |  | 
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| 306 | //--------------------------------------------------------------// | 
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| 307 | void LinuxForceFeedback::_updateRampEffect( const Effect* eff ) | 
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| 308 | { | 
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| 309 | struct ff_effect event; | 
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| 310 |  | 
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| 311 | RampEffect *effect = static_cast<RampEffect*>(eff->getForceEffect()); | 
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| 312 |  | 
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| 313 | _setCommonProperties(&event, &event.u.constant.envelope, eff, &effect->envelope); | 
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| 314 |  | 
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| 315 | event.type = FF_RAMP; | 
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| 316 | event.id = -1; | 
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| 317 |  | 
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| 318 | event.u.ramp.start_level = LinuxSignedLevel(effect->startLevel); | 
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| 319 | event.u.ramp.end_level = LinuxSignedLevel(effect->endLevel); | 
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| 320 |  | 
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| 321 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 322 | cout << "  StartLevel : " << effect->startLevel | 
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| 323 | << " => " << event.u.ramp.start_level << endl | 
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| 324 | << "  EndLevel   : " << effect->endLevel | 
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| 325 | << " => " << event.u.ramp.end_level << endl; | 
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| 326 | #endif | 
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| 327 |  | 
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| 328 | _upload(&event, eff); | 
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| 329 | } | 
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| 330 |  | 
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| 331 | //--------------------------------------------------------------// | 
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| 332 | void LinuxForceFeedback::_updatePeriodicEffect( const Effect* eff ) | 
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| 333 | { | 
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| 334 | struct ff_effect event; | 
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| 335 |  | 
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| 336 | PeriodicEffect *effect = static_cast<PeriodicEffect*>(eff->getForceEffect()); | 
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| 337 |  | 
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| 338 | _setCommonProperties(&event, &event.u.periodic.envelope, eff, &effect->envelope); | 
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| 339 |  | 
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| 340 | event.type = FF_PERIODIC; | 
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| 341 | event.id = -1; | 
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| 342 |  | 
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| 343 | switch( eff->type ) | 
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| 344 | { | 
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| 345 | case OIS::Effect::Square: | 
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| 346 | event.u.periodic.waveform = FF_SQUARE; | 
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| 347 | break; | 
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| 348 | case OIS::Effect::Triangle: | 
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| 349 | event.u.periodic.waveform = FF_TRIANGLE; | 
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| 350 | break; | 
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| 351 | case OIS::Effect::Sine: | 
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| 352 | event.u.periodic.waveform = FF_SINE; | 
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| 353 | break; | 
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| 354 | case OIS::Effect::SawToothUp: | 
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| 355 | event.u.periodic.waveform = FF_SAW_UP; | 
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| 356 | break; | 
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| 357 | case OIS::Effect::SawToothDown: | 
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| 358 | event.u.periodic.waveform = FF_SAW_DOWN; | 
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| 359 | break; | 
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| 360 | // Note: No support for Custom periodic force effect for the moment | 
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| 361 | //case OIS::Effect::Custom: | 
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| 362 | //event.u.periodic.waveform = FF_CUSTOM; | 
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| 363 | //break; | 
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| 364 | default: | 
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| 365 | OIS_EXCEPT(E_General, "No such available effect for Periodic force!"); | 
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| 366 | break; | 
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| 367 | } | 
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| 368 |  | 
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| 369 | event.u.periodic.period    = LinuxDuration(effect->period); | 
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| 370 | event.u.periodic.magnitude = LinuxPositiveLevel(effect->magnitude); | 
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| 371 | event.u.periodic.offset    = LinuxPositiveLevel(effect->offset); | 
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| 372 | event.u.periodic.phase     = (__u16)(effect->phase*event.u.periodic.period/36000.0); // ????? | 
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| 373 |  | 
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| 374 | // Note: No support for Custom periodic force effect for the moment | 
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| 375 | event.u.periodic.custom_len = 0; | 
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| 376 | event.u.periodic.custom_data = 0; | 
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| 377 |  | 
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| 378 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 379 | cout << "  Magnitude : " << effect->magnitude | 
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| 380 | << " => " << event.u.periodic.magnitude << endl | 
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| 381 | << "  Period    : " << effect->period | 
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| 382 | << " => " << event.u.periodic.period  << endl | 
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| 383 | << "  Offset    : " << effect->offset | 
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| 384 | << " => " << event.u.periodic.offset << endl | 
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| 385 | << "  Phase     : " << effect->phase | 
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| 386 | << " => " << event.u.periodic.phase << endl; | 
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| 387 | #endif | 
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| 388 |  | 
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| 389 | _upload(&event, eff); | 
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| 390 | } | 
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| 391 |  | 
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| 392 | //--------------------------------------------------------------// | 
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| 393 | void LinuxForceFeedback::_updateConditionalEffect( const Effect* eff ) | 
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| 394 | { | 
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| 395 | struct ff_effect event; | 
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| 396 |  | 
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| 397 | ConditionalEffect *effect = static_cast<ConditionalEffect*>(eff->getForceEffect()); | 
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| 398 |  | 
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| 399 | _setCommonProperties(&event, NULL, eff, NULL); | 
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| 400 |  | 
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| 401 | switch( eff->type ) | 
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| 402 | { | 
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| 403 | case OIS::Effect::Friction: | 
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| 404 | event.type = FF_FRICTION; | 
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| 405 | break; | 
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| 406 | case OIS::Effect::Damper: | 
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| 407 | event.type = FF_DAMPER; | 
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| 408 | break; | 
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| 409 | case OIS::Effect::Inertia: | 
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| 410 | event.type = FF_INERTIA; | 
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| 411 | break; | 
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| 412 | case OIS::Effect::Spring: | 
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| 413 | event.type = FF_SPRING; | 
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| 414 | break; | 
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| 415 | default: | 
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| 416 | OIS_EXCEPT(E_General, "No such available effect for Conditional force!"); | 
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| 417 | break; | 
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| 418 | } | 
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| 419 |  | 
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| 420 | event.id = -1; | 
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| 421 |  | 
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| 422 | event.u.condition[0].right_saturation = LinuxSignedLevel(effect->rightSaturation); | 
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| 423 | event.u.condition[0].left_saturation  = LinuxSignedLevel(effect->leftSaturation); | 
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| 424 | event.u.condition[0].right_coeff      = LinuxSignedLevel(effect->rightCoeff); | 
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| 425 | event.u.condition[0].left_coeff       = LinuxSignedLevel(effect->leftCoeff); | 
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| 426 | event.u.condition[0].deadband         = LinuxPositiveLevel(effect->deadband);// Unit ?? | 
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| 427 | event.u.condition[0].center           = LinuxSignedLevel(effect->center); // Unit ?? TODO ? | 
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| 428 |  | 
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| 429 | // TODO support for second condition | 
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| 430 | event.u.condition[1] = event.u.condition[0]; | 
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| 431 |  | 
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| 432 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 433 | cout << "  Condition[0] : " << endl | 
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| 434 | << "    RightSaturation  : " << effect->rightSaturation | 
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| 435 | << " => " << event.u.condition[0].right_saturation << endl | 
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| 436 | << "    LeftSaturation   : " << effect->leftSaturation | 
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| 437 | << " => " << event.u.condition[0]. left_saturation << endl | 
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| 438 | << "    RightCoefficient : " << effect->rightCoeff | 
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| 439 | << " => " << event.u.condition[0].right_coeff << endl | 
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| 440 | << "    LeftCoefficient : " << effect->leftCoeff | 
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| 441 | << " => " << event.u.condition[0].left_coeff << endl | 
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| 442 | << "    DeadBand        : " << effect->deadband | 
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| 443 | << " => " << event.u.condition[0].deadband  << endl | 
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| 444 | << "    Center          : " << effect->center | 
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| 445 | << " => " << event.u.condition[0].center << endl; | 
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| 446 | cout << "  Condition[1] : Not implemented" << endl; | 
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| 447 | #endif | 
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| 448 | _upload(&event, eff); | 
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| 449 | } | 
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| 450 |  | 
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| 451 | //--------------------------------------------------------------// | 
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| 452 | void LinuxForceFeedback::_upload( struct ff_effect* ffeffect, const Effect* effect) | 
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| 453 | { | 
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| 454 | struct ff_effect *linEffect = 0; | 
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| 455 |  | 
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| 456 | //Get the effect - if it exists | 
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| 457 | EffectList::iterator i = mEffectList.find(effect->_handle); | 
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| 458 | //It has been created already | 
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| 459 | if( i != mEffectList.end() ) | 
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| 460 | linEffect = i->second; | 
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| 461 |  | 
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| 462 | if( linEffect == 0 ) | 
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| 463 | { | 
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| 464 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 465 | cout << endl << "LinuxForceFeedback("<< mJoyStick << ") : Adding new effect : " | 
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| 466 | << Effect::getEffectTypeName(effect->type) << endl; | 
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| 467 | #endif | 
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| 468 |  | 
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| 469 | //This effect has not yet been created, so create it in the device | 
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| 470 | if (ioctl(mJoyStick, EVIOCSFF, ffeffect) == -1) { | 
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| 471 | // TODO device full check | 
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| 472 | // OIS_EXCEPT(E_DeviceFull, "Remove an effect before adding more!"); | 
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| 473 | OIS_EXCEPT(E_General, "Unknown error creating effect (may be the device is full)->.."); | 
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| 474 | } | 
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| 475 |  | 
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| 476 | // Save returned effect handle | 
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| 477 | effect->_handle = ffeffect->id; | 
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| 478 |  | 
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| 479 | // Save a copy of the uploaded effect for later simple modifications | 
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| 480 | linEffect = (struct ff_effect *)calloc(1, sizeof(struct ff_effect)); | 
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| 481 | memcpy(linEffect, ffeffect, sizeof(struct ff_effect)); | 
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| 482 |  | 
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| 483 | mEffectList[effect->_handle] = linEffect; | 
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| 484 |  | 
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| 485 | // Start playing the effect. | 
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| 486 | _start(effect->_handle); | 
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| 487 | } | 
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| 488 | else | 
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| 489 | { | 
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| 490 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 491 | cout << endl << "LinuxForceFeedback("<< mJoyStick << ") : Replacing effect : " | 
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| 492 | << Effect::getEffectTypeName(effect->type) << endl; | 
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| 493 | #endif | 
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| 494 |  | 
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| 495 | // Keep same id/handle, as this is just an update in the device. | 
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| 496 | ffeffect->id = effect->_handle; | 
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| 497 |  | 
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| 498 | // Update effect in the device. | 
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| 499 | if (ioctl(mJoyStick, EVIOCSFF, ffeffect) == -1) { | 
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| 500 | OIS_EXCEPT(E_General, "Unknown error updating an effect->.."); | 
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| 501 | } | 
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| 502 |  | 
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| 503 | // Update local linEffect for next time. | 
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| 504 | memcpy(linEffect, ffeffect, sizeof(struct ff_effect)); | 
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| 505 | } | 
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| 506 |  | 
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| 507 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 508 | cout << "LinuxForceFeedback("<< mJoyStick | 
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| 509 | << ") : Effect handle : " << effect->_handle << endl; | 
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| 510 | #endif | 
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| 511 | } | 
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| 512 |  | 
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| 513 | //--------------------------------------------------------------// | 
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| 514 | void LinuxForceFeedback::_stop( int handle) { | 
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| 515 | struct input_event stop; | 
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| 516 |  | 
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| 517 | stop.type = EV_FF; | 
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| 518 | stop.code = handle; | 
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| 519 | stop.value = 0; | 
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| 520 |  | 
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| 521 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 522 | cout << endl << "LinuxForceFeedback("<< mJoyStick | 
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| 523 | << ") : Stopping effect with handle " << handle << endl; | 
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| 524 | #endif | 
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| 525 |  | 
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| 526 | if (write(mJoyStick, &stop, sizeof(stop)) != sizeof(stop)) { | 
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| 527 | OIS_EXCEPT(E_General, "Unknown error stopping effect->.."); | 
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| 528 | } | 
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| 529 | } | 
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| 530 |  | 
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| 531 | //--------------------------------------------------------------// | 
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| 532 | void LinuxForceFeedback::_start( int handle) { | 
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| 533 | struct input_event play; | 
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| 534 |  | 
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| 535 | play.type = EV_FF; | 
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| 536 | play.code = handle; | 
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| 537 | play.value = 1; // Play once. | 
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| 538 |  | 
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| 539 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 540 | cout << endl << "LinuxForceFeedback("<< mJoyStick | 
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| 541 | << ") : Starting effect with handle " << handle << endl; | 
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| 542 | #endif | 
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| 543 |  | 
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| 544 | if (write(mJoyStick, &play, sizeof(play)) != sizeof(play)) { | 
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| 545 | OIS_EXCEPT(E_General, "Unknown error playing effect->.."); | 
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| 546 | } | 
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| 547 | } | 
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| 548 |  | 
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| 549 | //--------------------------------------------------------------// | 
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| 550 | void LinuxForceFeedback::_unload( int handle) | 
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| 551 | { | 
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| 552 | #if (OIS_LINUX_JOYFF_DEBUG > 1) | 
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| 553 | cout << endl << "LinuxForceFeedback("<< mJoyStick | 
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| 554 | << ") : Removing effect with handle " << handle << endl; | 
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| 555 | #endif | 
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| 556 |  | 
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| 557 | if (ioctl(mJoyStick, EVIOCRMFF, handle) == -1) { | 
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| 558 | OIS_EXCEPT(E_General, "Unknown error removing effect->.."); | 
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| 559 | } | 
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| 560 | } | 
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