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