src/Input/FGMacOSXEventInput.cxx

   1 // FGMacOSXEventInput.cxx -- handle event driven input devices for Mac OS X
   2 //
   3 // Written by Tatsuhiro Nishioka, started Aug. 2009.
   4 //
   5 // Copyright (C) 2009 Tasuhiro Nishioka, tat <dot> fgmacosx <at> gmail <dot> com
   6 //
   7 // This program is free software; you can redistribute it and/or
   8 // modify it under the terms of the GNU General Public License as
   9 // published by the Free Software Foundation; either version 2 of the
  10 // License, or (at your option) any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful, but
  13 // WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 // General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License
  18 // along with this program; if not, write to the Free Software
  19 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  20 //
  21 // $Id$
  22
  23 #include "FGMacOSXEventInput.hxx"
  24
  25 using std::stringstream;
  26 using std::map;
  27 using std::string;
  28
  29 #define GetHIDElementLongValue(element, key) ({ \
  30       long value = 0; \
  31       CFNumberRef refType = (CFNumberRef)CFDictionaryGetValue(element, CFSTR(key)); \
  32       if (refType) { CFNumberGetValue(refType, kCFNumberLongType, &value); } \
  33       value; })
  34
  35 #define GetHIDElementBooleanValue(element, key) ({ \
  36       bool value = 0; \
  37       CFBooleanRef refType = (CFBooleanRef)CFDictionaryGetValue(element, CFSTR(key)); \
  38       if (refType) { value = CFBooleanGetValue(refType); } \
  39       value; })
  40
  41 #define GetHIDElementStringValue(element, key) ({ \
  42       const char *buf = ""; \
  43       CFStringRef refType = (CFStringRef)CFDictionaryGetValue(element, CFSTR(key)); \
  44       if (refType) { \
  45         buf = CFStringGetCStringPtr(refType, CFStringGetSystemEncoding());  \
  46        } \
  47       buf; })
  48
  49 // HID Element Types (log / debug use)
  50 struct HIDTypes HID_TYPE_TABLE[] = {
  51   {kIOHIDElementTypeInput_Misc, kHIDElementType, "Input Misc"},
  52   {kIOHIDElementTypeInput_Button, kHIDElementType, "Input Button"},
  53   {kIOHIDElementTypeInput_Axis, kHIDElementType, "Input Axis"},
  54   {kIOHIDElementTypeInput_ScanCodes, kHIDElementType, "Input ScanCodes"},
  55   {kIOHIDElementTypeOutput, kHIDElementType, "Output"},
  56   {kIOHIDElementTypeFeature, kHIDElementType, "Feature"},
  57   {kIOHIDElementTypeCollection, kHIDElementType, "Collection"},
  58   {-1, kHIDElementType, ""}
  59 };
  60
  61 // HID Element Pages (log / debug use)
  62 struct HIDTypes HID_PAGE_TABLE[] = {
  63   // Page
  64   {kHIDPage_GenericDesktop, kHIDElementPage, "GenericDesktop"},
  65   {kHIDPage_Simulation, kHIDElementPage, "Simulation Controls"},
  66   {kHIDPage_VR, kHIDElementPage, "VR Controls"},
  67   {kHIDPage_Sport, kHIDElementPage, "Sport Controls"},
  68   {kHIDPage_Game, kHIDElementPage, "Game Controls"},
  69   {0x06, kHIDElementPage, "Generic Device Controls"},
  70   {kHIDPage_KeyboardOrKeypad, kHIDElementPage, "KeyboardOrKeypad"},
  71   {kHIDPage_LEDs, kHIDElementPage, "LEDs"},
  72   {kHIDPage_Button, kHIDElementPage, "Button"},
  73   {kHIDPage_Ordinal, kHIDElementPage, "Ordinal"},
  74   {kHIDPage_Telephony, kHIDElementPage, "Telephony"},
  75   {kHIDPage_Consumer, kHIDElementPage, "Consumer"},
  76   {kHIDPage_Digitizer, kHIDElementPage, "Digitizer"},
  77   {kHIDPage_PID, kHIDElementPage, "PID"},
  78   {kHIDPage_VendorDefinedStart, kHIDElementPage, "VendorDefinedStart"},
  79   {-1, kHIDElementPage, ""}
  80 };
  81
  82 #define USAGE_KEY(PAGE,USAGE) (PAGE << 16 | USAGE)
  83 #define GET_PAGE(KEY)  (KEY >> 16)
  84 #define GET_USAGE(KEY) (KEY & 0xFFFF)
  85
  86 #define GD_USAGE(USAGE) USAGE_KEY(kHIDPage_GenericDesktop, USAGE)
  87 #define SIM_USAGE(USAGE) USAGE_KEY(kHIDPage_GenericDesktop, USAGE)
  88 #define VR_USAGE(USAGE) USAGE_KEY(kHIDPage_VR, USAGE)
  89 #define SP_USAGE(USAGE) USAGE_KEY(kHIDPage_Sport, USAGE)
  90 #define GAME_USAGE(USAGE) USAGE_KEY(kHIDPage_Game, USAGE)
  91 #define GDC_USAGE(USAGE) USAGE_KEY(0x06, USAGE) // Generic Device Control is "Reserved" in Apple's definition
  92 #define KEY_USAGE(USAGE) USAGE_KEY(kHIDPage_KeyboardOrKeypad, USAGE)
  93 #define LED_USAGE(USAGE) USAGE_KEY(kHIDPage_LEDs, USAGE)
  94 #define BUTTON_USAGE(USAGE) USAGE_KEY(kHIDPage_Button, USAGE)
  95 #define DIG_USAGE(USAGE) USAGE_KEY(kHIDPage_Digitizer, USAGE)
  96 #define CON_USAGE(USAGE) USAGE_KEY(kHIDPage_Consumer, USAGE)
  97
  98 // HID Element Usage <-> FGEventData convertion data
  99 // See http://www.usb.org/developers/devclass_docs/Hut1_12.pdf for detail on HID pages and usages
 100 // Note
 101 // kHIDUsageAxis is FG specific type of DV since it is needed to be normalized into -1.0 to 1.0
 102 // kHIDUsageHat also is FG specific type of DV. it's value is converted into two axis events
 103 struct HIDTypes HID_USAGE_TABLE[] = {
 104   // Generic Desktop Page
 105   {GD_USAGE(kHIDUsage_GD_X), kHIDUsageAxis, "x-translate"},
 106   {GD_USAGE(kHIDUsage_GD_Y), kHIDUsageAxis, "y-translate"},
 107   {GD_USAGE(kHIDUsage_GD_Z), kHIDUsageAxis, "z-translate"},
 108   {GD_USAGE(kHIDUsage_GD_Rx), kHIDUsageAxis, "x-rotate"},
 109   {GD_USAGE(kHIDUsage_GD_Ry), kHIDUsageAxis, "y-rotate"},
 110   {GD_USAGE(kHIDUsage_GD_Rz), kHIDUsageAxis, "z-rotate"},
 111   {GD_USAGE(kHIDUsage_GD_Slider), kHIDUsageAxis, "slider"},
 112   {GD_USAGE(kHIDUsage_GD_Dial), kHIDUsageAxis, "dial"},
 113   {GD_USAGE(kHIDUsage_GD_Wheel), kHIDUsageAxis, "wheel"},
 114   {GD_USAGE(kHIDUsage_GD_Hatswitch), kHIDUsageHat, "hat"},
 115
 116   {GD_USAGE(kHIDUsage_GD_CountedBuffer), kHIDUsageNotSupported, "counted-buffer"},
 117   {GD_USAGE(kHIDUsage_GD_ByteCount), kHIDUsageNotSupported, "byte-count"},
 118   {GD_USAGE(kHIDUsage_GD_MotionWakeup), kHIDUsageDF, "motion-wakeup"},
 119   {GD_USAGE(kHIDUsage_GD_Start), kHIDUsageOOC, "button-start"},
 120   {GD_USAGE(kHIDUsage_GD_Select), kHIDUsageOOC, "button-select"},
 121   {GD_USAGE(kHIDUsage_GD_Vx), kHIDUsageAxis, "x-vector"},
 122   {GD_USAGE(kHIDUsage_GD_Vy), kHIDUsageAxis, "y-vector"},
 123   {GD_USAGE(kHIDUsage_GD_Vz), kHIDUsageAxis, "z-vector"},
 124   {GD_USAGE(kHIDUsage_GD_Vbrx), kHIDUsageAxis, "x-rel-vector"},
 125   {GD_USAGE(kHIDUsage_GD_Vbry), kHIDUsageAxis, "y-rel-vector"},
 126   {GD_USAGE(kHIDUsage_GD_Vbrz), kHIDUsageAxis, "z-rel-vector"},
 127   {GD_USAGE(kHIDUsage_GD_Vno),  kHIDUsageAxis, "no-vector"},
 128
 129   {GD_USAGE(kHIDUsage_GD_SystemPowerDown), kHIDUsageOSC, "button-system-power-down"},
 130   {GD_USAGE(kHIDUsage_GD_SystemSleep), kHIDUsageOSC, "button-system-sleep"},
 131   {GD_USAGE(kHIDUsage_GD_SystemWakeUp), kHIDUsageOSC, "button-system-wake-up"},
 132   {GD_USAGE(kHIDUsage_GD_SystemContextMenu), kHIDUsageOSC, "button-system-context-menu"},
 133   {GD_USAGE(kHIDUsage_GD_SystemMainMenu), kHIDUsageOSC, "button-system-main-menu"},
 134   {GD_USAGE(kHIDUsage_GD_SystemAppMenu), kHIDUsageOSC, "button-system-app-menu"},
 135   {GD_USAGE(kHIDUsage_GD_SystemMenuHelp), kHIDUsageOSC, "button-system-menu-help"},
 136   {GD_USAGE(kHIDUsage_GD_SystemMenuExit), kHIDUsageOSC, "button-system-menu-exit"},
 137   {GD_USAGE(kHIDUsage_GD_SystemMenu), kHIDUsageOSC, "button-system-menu"},
 138   {GD_USAGE(kHIDUsage_GD_SystemMenuRight), kHIDUsageRTC, "button-system-menu-right"},
 139   {GD_USAGE(kHIDUsage_GD_SystemMenuLeft), kHIDUsageRTC, "button-system-menu-left"},
 140   {GD_USAGE(kHIDUsage_GD_SystemMenuUp), kHIDUsageRTC, "button-system-menu-up"},
 141   {GD_USAGE(kHIDUsage_GD_SystemMenuDown), kHIDUsageRTC, "button-system-menu-down"},
 142   {GD_USAGE(kHIDUsage_GD_DPadUp), kHIDUsageOOC, "dpad-up"},
 143   {GD_USAGE(kHIDUsage_GD_DPadDown), kHIDUsageOOC, "dpad-down"},
 144   {GD_USAGE(kHIDUsage_GD_DPadRight), kHIDUsageOOC, "dpad-right"},
 145   {GD_USAGE(kHIDUsage_GD_DPadLeft), kHIDUsageOOC, "dpad-left"},
 146
 147   // Game Controls Page
 148   {GAME_USAGE(kHIDUsage_Game_TurnRightOrLeft), kHIDUsageAxis, "turn"},
 149   {GAME_USAGE(kHIDUsage_Game_PitchUpOrDown), kHIDUsageAxis, "pitch"},
 150   {GAME_USAGE(kHIDUsage_Game_MoveRightOrLeft), kHIDUsageAxis, "x-move"},
 151   {GAME_USAGE(kHIDUsage_Game_MoveForwardOrBackward), kHIDUsageAxis, "y-move"},
 152   {GAME_USAGE(kHIDUsage_Game_MoveUpOrDown), kHIDUsageAxis, "z-move"},
 153   {GAME_USAGE(kHIDUsage_Game_LeanRightOrLeft), kHIDUsageAxis, "x-lean"},
 154   {GAME_USAGE(kHIDUsage_Game_LeanForwardOrBackward), kHIDUsageAxis, "z-lean"},
 155
 156   // General Control Devices Page
 157   {GDC_USAGE(0x20), kHIDUsageDV, "battery-strength"},
 158   {GDC_USAGE(0x21), kHIDUsageDV, "wireless-channel"},
 159   {GDC_USAGE(0x22), kHIDUsageDV, "wireless-id"},
 160   {GDC_USAGE(0x23), kHIDUsageDV, "discover-wireless-control"},
 161   {GDC_USAGE(0x24), kHIDUsageOSC, "security-code-character-entered"},
 162   {GDC_USAGE(0x25), kHIDUsageOSC, "security-code-character-erased"},
 163   {GDC_USAGE(0x26), kHIDUsageOSC, "security-code-cleared"},
 164
 165   // Simulation Controls Page
 166   {SIM_USAGE(kHIDUsage_Sim_Aileron), kHIDUsageAxis, "aileron"},
 167   {SIM_USAGE(kHIDUsage_Sim_AileronTrim), kHIDUsageAxis, "aileron-trim"},
 168   {SIM_USAGE(kHIDUsage_Sim_AntiTorqueControl), kHIDUsageAxis, "anti-torque-control"},
 169   {SIM_USAGE(kHIDUsage_Sim_AutopilotEnable), kHIDUsageOOC, "button-autopilot-enable"},
 170   {SIM_USAGE(kHIDUsage_Sim_ChaffRelease), kHIDUsageOSC, "button-chaff-release"},
 171   {SIM_USAGE(kHIDUsage_Sim_CollectiveControl), kHIDUsageAxis, "collective-control"},
 172   {SIM_USAGE(kHIDUsage_Sim_DiveBrake), kHIDUsageAxis, "dive-brake"},
 173   {SIM_USAGE(kHIDUsage_Sim_ElectronicCountermeasures), kHIDUsageOOC, "electronic-countermeasures"}, // OOC
 174   {SIM_USAGE(kHIDUsage_Sim_Elevator), kHIDUsageAxis, "elevator"},
 175   {SIM_USAGE(kHIDUsage_Sim_ElevatorTrim), kHIDUsageAxis, "elevator-trim"},
 176   {SIM_USAGE(kHIDUsage_Sim_Rudder), kHIDUsageAxis, "rudder"},
 177   {SIM_USAGE(kHIDUsage_Sim_Throttle), kHIDUsageAxis, "throttle"},
 178   {SIM_USAGE(kHIDUsage_Sim_FlightCommunications), kHIDUsageOOC, "button-flight-communications"}, // OOC
 179   {SIM_USAGE(kHIDUsage_Sim_FlareRelease), kHIDUsageOSC, "button-flare-release"},
 180   {SIM_USAGE(kHIDUsage_Sim_LandingGear), kHIDUsageOOC, "button-landing-gear"}, // OOC
 181   {SIM_USAGE(kHIDUsage_Sim_ToeBrake), kHIDUsageAxis, "toe-brake"},
 182   {SIM_USAGE(kHIDUsage_Sim_Trigger), kHIDUsageMC, "button-trigger"},
 183   {SIM_USAGE(kHIDUsage_Sim_WeaponsArm), kHIDUsageOOC, "button-weapons-arm"}, // OOC
 184   {SIM_USAGE(kHIDUsage_Sim_Weapons), kHIDUsageOSC, "button-weapons"},
 185   {SIM_USAGE(kHIDUsage_Sim_WingFlaps), kHIDUsageAxis, "wing-flaps"},  // DV
 186   {SIM_USAGE(kHIDUsage_Sim_Accelerator), kHIDUsageAxis, "accelerator"}, // DV
 187   {SIM_USAGE(kHIDUsage_Sim_Brake), kHIDUsageAxis, "brake"}, // DV
 188   {SIM_USAGE(kHIDUsage_Sim_Clutch), kHIDUsageAxis, "clutch"}, // DV
 189   {SIM_USAGE(kHIDUsage_Sim_Shifter), kHIDUsageAxis, "shifter"}, // DV
 190   {SIM_USAGE(kHIDUsage_Sim_Steering), kHIDUsageAxis, "steering"}, // DV
 191   {SIM_USAGE(kHIDUsage_Sim_TurretDirection), kHIDUsageAxis, "turret-direction"}, // DV
 192   {SIM_USAGE(kHIDUsage_Sim_BarrelElevation), kHIDUsageAxis, "barrel-elevation"}, // DV
 193   {SIM_USAGE(kHIDUsage_Sim_DivePlane), kHIDUsageAxis, "dive-plane"}, // DV
 194   {SIM_USAGE(kHIDUsage_Sim_Ballast), kHIDUsageAxis, "ballast"}, // DV
 195   {SIM_USAGE(kHIDUsage_Sim_BicycleCrank), kHIDUsageAxis, "bicycle-crank"}, // DV
 196   {SIM_USAGE(kHIDUsage_Sim_HandleBars), kHIDUsageAxis, "handle-bars"}, // DV
 197   {SIM_USAGE(kHIDUsage_Sim_FrontBrake), kHIDUsageAxis, "front-brake"}, // DV
 198   {SIM_USAGE(kHIDUsage_Sim_RearBrake), kHIDUsageAxis, "rear-brake"}, // DV
 199
 200   // Digitizer Controls Page
 201   {DIG_USAGE(kHIDUsage_Dig_TipPressure), kHIDUsageAxis, "tip-pressure"}, // DV
 202   {DIG_USAGE(kHIDUsage_Dig_BarrelPressure), kHIDUsageAxis, "barrel-pressure"}, // DV
 203   {DIG_USAGE(kHIDUsage_Dig_InRange), kHIDUsageMC, "in-range"}, // MC
 204   {DIG_USAGE(kHIDUsage_Dig_Touch), kHIDUsageMC, "touch"}, // MC
 205   {DIG_USAGE(kHIDUsage_Dig_Untouch), kHIDUsageOSC, "button-untouch"}, // OSC
 206   {DIG_USAGE(kHIDUsage_Dig_Tap), kHIDUsageOSC, "button-tap"}, // OSC
 207   {DIG_USAGE(kHIDUsage_Dig_Quality), kHIDUsageDV, "quality"}, // DV
 208   {DIG_USAGE(kHIDUsage_Dig_DataValid), kHIDUsageDV, "button-data-valid"}, // MC
 209   {DIG_USAGE(kHIDUsage_Dig_TransducerIndex), kHIDUsageDV, "transducer-index"}, // DV
 210   {DIG_USAGE(kHIDUsage_Dig_BatteryStrength), kHIDUsageDV, "battery-strength"}, // DV
 211   {DIG_USAGE(kHIDUsage_Dig_Invert), kHIDUsageMC, "invert"}, // MC
 212   {DIG_USAGE(kHIDUsage_Dig_XTilt), kHIDUsageAxis, "x-tilt"}, // DV
 213   {DIG_USAGE(kHIDUsage_Dig_YTilt), kHIDUsageAxis, "y-tilt"}, // DV
 214   {DIG_USAGE(kHIDUsage_Dig_Azimuth), kHIDUsageAxis, "azimuth"}, // DV
 215   {DIG_USAGE(kHIDUsage_Dig_Altitude), kHIDUsageAxis, "altitude"}, // DV
 216   {DIG_USAGE(kHIDUsage_Dig_Twist), kHIDUsageAxis, "twist"}, // DV
 217   {DIG_USAGE(kHIDUsage_Dig_TipSwitch), kHIDUsageMC, "button-tipswitch"}, // MC
 218   {DIG_USAGE(kHIDUsage_Dig_SecondaryTipSwitch), kHIDUsageMC, "button-secondary-tipswitch"}, // MC
 219   {DIG_USAGE(kHIDUsage_Dig_BarrelSwitch), kHIDUsageMC, "button-barrelswitch"}, // MC
 220   {DIG_USAGE(kHIDUsage_Dig_Eraser), kHIDUsageMC, "eraser"}, // MC
 221   {DIG_USAGE(kHIDUsage_Dig_TabletPick), kHIDUsageMC, "table-pick"}, // MC
 222
 223  // Consumer Page
 224   {CON_USAGE(kHIDUsage_Csmr_Plus10), kHIDUsageOSC, "plus10"},
 225   {CON_USAGE(kHIDUsage_Csmr_Plus100), kHIDUsageOSC, "plus100"},
 226   {CON_USAGE(kHIDUsage_Csmr_AMOrPM), kHIDUsageOSC, "am-pm"},
 227   {CON_USAGE(kHIDUsage_Csmr_Power), kHIDUsageOOC, "power"},
 228   {CON_USAGE(kHIDUsage_Csmr_Reset), kHIDUsageOSC, "reset"},
 229   {CON_USAGE(kHIDUsage_Csmr_Sleep), kHIDUsageOSC, "sleep"},
 230   {CON_USAGE(kHIDUsage_Csmr_SleepAfter), kHIDUsageOSC, "sleep-after"},
 231   {CON_USAGE(kHIDUsage_Csmr_SleepMode), kHIDUsageRTC, "sleep-mode"},
 232   {CON_USAGE(kHIDUsage_Csmr_Illumination), kHIDUsageOOC, "illumination"},
 233   {CON_USAGE(kHIDUsage_Csmr_Menu), kHIDUsageOOC, "menu"},
 234   {CON_USAGE(kHIDUsage_Csmr_MenuPick), kHIDUsageOSC, "menu-pick"},
 235   {CON_USAGE(kHIDUsage_Csmr_MenuUp), kHIDUsageOSC, "menu-up"},
 236   {CON_USAGE(kHIDUsage_Csmr_MenuDown), kHIDUsageOSC, "menu-down"},
 237   {CON_USAGE(kHIDUsage_Csmr_MenuLeft), kHIDUsageOSC, "menu-left"},
 238   {CON_USAGE(kHIDUsage_Csmr_MenuRight), kHIDUsageOSC, "menu-right"},
 239   {CON_USAGE(kHIDUsage_Csmr_MenuEscape), kHIDUsageOSC, "menu-escape"},
 240   {CON_USAGE(kHIDUsage_Csmr_MenuValueIncrease), kHIDUsageOSC, "menu-value-increase"},
 241   {CON_USAGE(kHIDUsage_Csmr_MenuValueDecrease), kHIDUsageOSC, "menu-value-decrease"},
 242   {CON_USAGE(kHIDUsage_Csmr_DataOnScreen), kHIDUsageOOC, "data-on-screen"},
 243   {CON_USAGE(kHIDUsage_Csmr_ClosedCaption), kHIDUsageOOC, "closed-caption"},
 244   {CON_USAGE(kHIDUsage_Csmr_ClosedCaptionSelect), kHIDUsageSel, "closed-caption-select"},
 245   {CON_USAGE(kHIDUsage_Csmr_VCROrTV), kHIDUsageOOC, "vcr-tv"},
 246   {CON_USAGE(kHIDUsage_Csmr_BroadcastMode), kHIDUsageOSC, "broadcast-mode"},
 247   {CON_USAGE(kHIDUsage_Csmr_Snapshot), kHIDUsageOSC, "snapshot"},
 248   {CON_USAGE(kHIDUsage_Csmr_Still), kHIDUsageOSC, "still"},
 249   {CON_USAGE(kHIDUsage_Csmr_Assign), kHIDUsageOSC, "assign"},
 250   {CON_USAGE(kHIDUsage_Csmr_ModeStep), kHIDUsageOSC, "mode-step"},
 251   {CON_USAGE(kHIDUsage_Csmr_RecallLast), kHIDUsageOSC, "recall-last"},
 252   {CON_USAGE(kHIDUsage_Csmr_EnterChannel), kHIDUsageOSC, "enter-channel"},
 253   {CON_USAGE(kHIDUsage_Csmr_OrderMovie), kHIDUsageOSC, "order-movie"},
 254   {CON_USAGE(kHIDUsage_Csmr_Channel), kHIDUsageDV, "channel"}, // LC
 255   {CON_USAGE(kHIDUsage_Csmr_MediaSelection), kHIDUsageSel, "media-selection"},
 256   {CON_USAGE(kHIDUsage_Csmr_MediaSelectComputer), kHIDUsageSel, "media-select-computer"},
 257   {CON_USAGE(kHIDUsage_Csmr_MediaSelectTV), kHIDUsageSel, "media-select-tv"},
 258   {CON_USAGE(kHIDUsage_Csmr_MediaSelectWWW), kHIDUsageSel, "media-seleci-www"},
 259   {CON_USAGE(kHIDUsage_Csmr_MediaSelectDVD), kHIDUsageSel, "media-select-dvd"},
 260   {CON_USAGE(kHIDUsage_Csmr_MediaSelectTelephone), kHIDUsageSel, "media-select-telephone"},
 261   {CON_USAGE(kHIDUsage_Csmr_MediaSelectProgramGuide), kHIDUsageSel, "media-select-programguide"},
 262   {CON_USAGE(kHIDUsage_Csmr_MediaSelectVideoPhone), kHIDUsageSel, "media-select-videophone"},
 263   {CON_USAGE(kHIDUsage_Csmr_MediaSelectGames), kHIDUsageSel, "media-select-games"},
 264   {CON_USAGE(kHIDUsage_Csmr_MediaSelectMessages), kHIDUsageSel, "media-select-messages"},
 265   {CON_USAGE(kHIDUsage_Csmr_MediaSelectCD), kHIDUsageSel, "media-select-cd"},
 266   {CON_USAGE(kHIDUsage_Csmr_MediaSelectVCR), kHIDUsageSel, "media-select-vcr"},
 267   {CON_USAGE(kHIDUsage_Csmr_MediaSelectTuner), kHIDUsageOSC, "media-select-tuner"},
 268   {CON_USAGE(kHIDUsage_Csmr_Quit), kHIDUsageOSC, "quit"},
 269   {CON_USAGE(kHIDUsage_Csmr_Help), kHIDUsageOOC, "help"},
 270   {CON_USAGE(kHIDUsage_Csmr_MediaSelectTape), kHIDUsageSel, "media-select-tape"},
 271   {CON_USAGE(kHIDUsage_Csmr_MediaSelectCable), kHIDUsageSel, "media-select-cable"},
 272   {CON_USAGE(kHIDUsage_Csmr_MediaSelectSatellite), kHIDUsageSel, "media-select-satellite"},
 273   {CON_USAGE(kHIDUsage_Csmr_MediaSelectSecurity), kHIDUsageSel, "media-select-security"},
 274   {CON_USAGE(kHIDUsage_Csmr_MediaSelectHome), kHIDUsageSel, "media-select-home"},
 275   {CON_USAGE(kHIDUsage_Csmr_MediaSelectCall), kHIDUsageSel, "media-select-call"},
 276   {CON_USAGE(kHIDUsage_Csmr_ChannelIncrement), kHIDUsageOSC, "channel-increment"},
 277   {CON_USAGE(kHIDUsage_Csmr_ChannelDecrement), kHIDUsageOSC, "channel-decrement"},
 278   {CON_USAGE(kHIDUsage_Csmr_Media), kHIDUsageSel, "media"},
 279   {CON_USAGE(kHIDUsage_Csmr_VCRPlus), kHIDUsageOSC, "vcr-plus"},
 280   {CON_USAGE(kHIDUsage_Csmr_Once), kHIDUsageOSC, "once"},
 281   {CON_USAGE(kHIDUsage_Csmr_Daily), kHIDUsageOSC, "daily"},
 282   {CON_USAGE(kHIDUsage_Csmr_Weekly), kHIDUsageOSC, "weekly"},
 283   {CON_USAGE(kHIDUsage_Csmr_Monthly), kHIDUsageOSC, "monthly"},
 284   {CON_USAGE(kHIDUsage_Csmr_Play), kHIDUsageOOC, "play"},
 285   {CON_USAGE(kHIDUsage_Csmr_Pause), kHIDUsageOOC, "pause"},
 286   {CON_USAGE(kHIDUsage_Csmr_Record), kHIDUsageOOC, "record"},
 287   {CON_USAGE(kHIDUsage_Csmr_FastForward), kHIDUsageOOC,"fastforward"},
 288   {CON_USAGE(kHIDUsage_Csmr_Rewind), kHIDUsageOOC, "rewind"},
 289   {CON_USAGE(kHIDUsage_Csmr_ScanNextTrack), kHIDUsageOSC, "scan-next-track"},
 290   {CON_USAGE(kHIDUsage_Csmr_ScanPreviousTrack), kHIDUsageOSC, "scan-previous-track"},
 291   {CON_USAGE(kHIDUsage_Csmr_Stop), kHIDUsageOSC, "stop"},
 292   {CON_USAGE(kHIDUsage_Csmr_Eject), kHIDUsageOSC, "eject"},
 293   {CON_USAGE(kHIDUsage_Csmr_RandomPlay), kHIDUsageOOC, "random-play"},
 294   {CON_USAGE(kHIDUsage_Csmr_SelectDisc), kHIDUsageNotSupported, "select-disc"}, //NamedArray
 295
 296   {CON_USAGE(kHIDUsage_Csmr_VolumeIncrement), kHIDUsageRTC, "volume-increment"},
 297   {CON_USAGE(kHIDUsage_Csmr_VolumeDecrement), kHIDUsageRTC, "volume-decrement"},
 298   {CON_USAGE(kHIDUsage_Csmr_PlayOrPause), kHIDUsageOSC, "play-pause"},
 299   {CON_USAGE(kHIDUsage_Csmr_Mute), kHIDUsageOOC, "mute"},
 300   // Too many... and the rest are T.B.D. ;-)
 301   {-1, kHIDElementPage, ""},
 302 };
 303
 304 static HIDTypeByID hidTypeByID(HID_TYPE_TABLE);
 305 static HIDTypeByID hidPageByID(HID_PAGE_TABLE);
 306 static HIDTypeByID hidUsageByID(HID_USAGE_TABLE);
 307
 308
 309 HIDElement::HIDElement(CFDictionaryRef element, long page, long usage) :
 310   page(page), usage(usage), value(0.0), lastValue(0.0) {
 311
 312   cookie = (IOHIDElementCookie)GetHIDElementLongValue(element, kIOHIDElementCookieKey);
 313   name = hidUsageByID.getName(USAGE_KEY(page, usage));
 314 }
 315
 316 long HIDElement::read(IOHIDDeviceInterface **interface)
 317 {
 318   IOHIDEventStruct event;
 319   lastValue = value;
 320   IOReturn ret = (*interface)->getElementValue(interface, cookie, &event);
 321   if (ret == kIOReturnSuccess) {
 322     value = event.value;
 323 //    SG_LOG(SG_INPUT, SG_BULK, "Element: " << name << "; value = " << value);
 324     return event.value;
 325   } else {
 326     SG_LOG(SG_INPUT, SG_WARN, "Failed reading value for HID Element: " << name);
 327     return 0;
 328   }
 329 }
 330
 331 bool HIDElement::isUpdated()
 332 {
 333   return (value != lastValue);
 334 }
 335
 336 void HIDElement::generateEvent(FGMacOSXInputDevice *device, double dt, int modifiers)
 337 {
 338   SG_LOG(SG_INPUT, SG_DEBUG, "Generating Input Event: " << name << "=" << value);
 339   FGMacOSXEventData eventData(name, (float)value, dt, modifiers);
 340   device->HandleEvent(eventData);
 341 }
 342
 343 AxisElement::AxisElement(CFDictionaryRef element, long page, long usage) :
 344   HIDElement(element, page, usage), dead_band(0.00), saturate(1.0)
 345 {
 346   min = GetHIDElementLongValue(element, kIOHIDElementMinKey);
 347   max = GetHIDElementLongValue(element, kIOHIDElementMaxKey);
 348   isRelative = GetHIDElementBooleanValue(element, kIOHIDElementIsRelativeKey);
 349   isWrapping = GetHIDElementBooleanValue(element, kIOHIDElementIsWrappingKey);
 350   isNonLinear = GetHIDElementBooleanValue(element, kIOHIDElementIsNonLinearKey);
 351
 352   name = ((isRelative == true) ? "rel-" : "abs-") + name;
 353
 354   center = min + (max - abs(min)) * 0.5;
 355   SG_LOG(SG_INPUT, SG_DEBUG, "HID Axis Element; " << name << " min: " << min << " max:" << max << " center: " << center);
 356   SG_LOG(SG_INPUT, SG_DEBUG, "isRelative=" << isRelative << ", isWrapping=" << isWrapping << ", isNonLinear=" << isNonLinear);
 357 }
 358
 359 long AxisElement::read(IOHIDDeviceInterface **interface)
 360 {
 361   lastValue = value;
 362   return HIDElement::read(interface);
 363 }
 364
 365 // FIXME: This can be removed when AxisInputEvent can normalize its value
 366 void AxisElement::generateEvent(FGMacOSXInputDevice *device, double dt, int modifiers)
 367 {
 368   float normalizedValue = (float)value;
 369   if (!isRelative) {
 370     normalizedValue = (value - (float)center) / (float)(max - center);
 371     if (fabs(normalizedValue) < dead_band)
 372       normalizedValue = 0.0;
 373   }
 374
 375   SG_LOG(SG_INPUT, SG_DEBUG, "Generating Input Event: " << name << "=" << normalizedValue);
 376   FGMacOSXEventData eventData(name, normalizedValue, dt, modifiers);
 377   device->HandleEvent(eventData);
 378 }
 379
 380 ButtonElement::ButtonElement(CFDictionaryRef element, long page, long usage) :
 381   HIDElement(element, page, usage)
 382 {
 383   if (name == "") {
 384     stringstream ss;
 385     ss << (page == kHIDPage_KeyboardOrKeypad ? "keyboard-" : "button-") << usage;
 386     ss >> name;
 387   }
 388 }
 389
 390 HatElement::HatElement(CFDictionaryRef element, long page, long usage, int id) :
 391   HIDElement(element, page, usage), id(id)
 392 {
 393   min = GetHIDElementLongValue(element, kIOHIDElementMinKey);
 394   max = GetHIDElementLongValue(element, kIOHIDElementMaxKey);
 395   lastValue = 8;
 396 }
 397
 398 void HatElement::generateEvent(FGMacOSXInputDevice *device, double dt, int modifiers)
 399 {
 400   // Hat value is from 0 to 8, representing:
 401   // 0:N, 1:NE, 2:E, 3:SE, 4:S, 5:SW, 6:W, 7:NW, 8:Neutral
 402   // FG can't bind hat directly, so need to convert its value to two axis events
 403   static float xvalues[] = {0, 1, 1,  1,  0, -1, -1, -1, 0};
 404   static float yvalues[] = {1, 1, 0, -1, -1, -1,  0,  1, 0};
 405   stringstream ss1, ss2;
 406   ss1 << "abs-hat" << id << "-x";
 407   SG_LOG(SG_INPUT, SG_BULK, "Generating Input Event: " << ss1.str() << "=" << xvalues[(int)value]);
 408   FGMacOSXEventData eventDataX(ss1.str(), xvalues[(int)value], dt, modifiers);
 409   ss2 << "abs-hat" << id << "-y";
 410   SG_LOG(SG_INPUT, SG_BULK, "Generating Input Event: " << ss2.str() << "=" << yvalues[(int)value]);
 411   FGMacOSXEventData eventDataY(ss2.str(), yvalues[(int)value], dt, modifiers);
 412   device->HandleEvent((FGEventData &)eventDataX);
 413   device->HandleEvent((FGEventData &)eventDataY);
 414 }
 415
 416
 417 LEDElement::LEDElement(CFDictionaryRef element, long page, long usage) :
 418   HIDElement(element, page, usage)
 419 {
 420   stringstream ss;
 421   if (name == "") {
 422     ss << "led-" << usage;
 423     ss >> name;
 424   }
 425 }
 426
 427 void LEDElement::write(IOHIDDeviceInterface **interface, double value) {
 428   IOHIDEventStruct event = (IOHIDEventStruct){kIOHIDElementTypeOutput, cookie, 0, {0}, 0, 0};
 429   event.value = value;
 430   (*interface)->setElementValue(interface, cookie, &event, 0, NULL, NULL, NULL);
 431 }
 432
 433 //
 434 // This is just for testing....
 435 //
 436 FeatureElement::FeatureElement(CFDictionaryRef element, long page, long usage, int count=1) :
 437   HIDElement(element, page, usage)
 438 {
 439   stringstream ss;
 440   if (name == "") {
 441     ss << "feature-" << usage;
 442     if (count > 1)
 443       ss << "-" << count;
 444     ss >> name;
 445   }
 446 }
 447
 448 long FeatureElement::read(IOHIDDeviceInterface **interface) {
 449   IOHIDEventStruct event;
 450   IOReturn ret = (*interface)->queryElementValue(interface, cookie, &event, 0, NULL, NULL, NULL);
 451   if (ret != kIOReturnSuccess) {
 452     ret = (*interface)->getElementValue(interface, cookie, &event);
 453     if (ret != kIOReturnSuccess) {
 454       SG_LOG(SG_INPUT, SG_WARN, "Can't get element value for feature element: " << getName());
 455       return 0;
 456     }
 457   }
 458   return event.value;
 459 }
 460
 461 //
 462 // HIDElementFactory
 463 //
 464 void HIDElementFactory::create(CFTypeRef element, FGMacOSXInputDevice *inputDevice)
 465 {
 466   assert(CFGetTypeID(element) == CFArrayGetTypeID());
 467   CFRange range = {0, CFArrayGetCount((CFArrayRef)element)};
 468   CFArrayApplyFunction((CFArrayRef) element, range,
 469                        HIDElementFactory::elementEnumerator, (void *)inputDevice);
 470 };
 471
 472
 473 void HIDElementFactory::elementEnumerator( const void *element, void *inputDevice) {
 474   if (CFGetTypeID((CFTypeRef) element) != CFDictionaryGetTypeID()) {
 475     SG_LOG(SG_INPUT, SG_WARN, "Element Enumerator passed non-dictionary value.");
 476   }
 477   HIDElementFactory::parseElement((CFDictionaryRef)element, (FGMacOSXInputDevice *)inputDevice);
 478 };
 479
 480
 481 void HIDElementFactory::parseElement(CFDictionaryRef element, FGMacOSXInputDevice *inputDevice) {
 482   long page = GetHIDElementLongValue(element, kIOHIDElementUsagePageKey);
 483   long usage = GetHIDElementLongValue(element, kIOHIDElementUsageKey);
 484
 485   static int id=0;
 486   static map<FGMacOSXInputDevice *, map<long, unsigned> > elementCount;
 487
 488   long type = GetHIDElementLongValue(element, kIOHIDElementTypeKey);
 489
 490   if (type == kIOHIDElementTypeCollection) {
 491     id = 0;
 492     SG_LOG(SG_INPUT, SG_DEBUG, "Collection: " << hidTypeByID.getName(type) << "(" << type << ")"
 493                                               << ":" << hidPageByID.getName(page) << "(" << page << ")"
 494                                               << ":" << hidUsageByID.getName(USAGE_KEY(page, usage)) << "(" << usage << ")");
 495     HIDElementFactory::create(CFDictionaryGetValue(element, CFSTR(kIOHIDElementKey)), inputDevice);
 496   } else {
 497     HIDUsageType usageType = hidUsageByID.getType(USAGE_KEY(page, usage));
 498     // FIXME: Any other elegant way for counting the same usage on a device?
 499     // This is mainly needed for feature / hat elements to avoid assigning the sane event name.
 500     elementCount[inputDevice][USAGE_KEY(page, usage)] += 1;
 501
 502     switch (usageType) {
 503       case kHIDUsageAxis:
 504           inputDevice->addElement(new AxisElement(element, page, usage));
 505           break;
 506       case kHIDUsageDV:
 507       case kHIDUsageDF:
 508           inputDevice->addElement(new HIDElement(element, page, usage));
 509           break;
 510       case kHIDUsageHat:
 511           inputDevice->addElement(new HatElement(element, page, usage, elementCount[inputDevice][USAGE_KEY(page, usage)]));
 512           break;
 513       case kHIDUsageOOC:
 514       case kHIDUsageOSC:
 515       case kHIDUsageMC:
 516       case kHIDUsageRTC:
 517           if (usage > 0)
 518             inputDevice->addElement(new ButtonElement(element, page, usage));
 519           break;
 520
 521       default:
 522         if (page == kHIDPage_Button || type == kIOHIDElementTypeInput_Button && usage > 0) {
 523         // FIXME: most of KeyboardOrKeypad elements should be treated as Selector type, not as Button...
 524           inputDevice->addElement(new ButtonElement(element, page, usage));
 525         } else if (page == kHIDPage_LEDs && usage > 0) {
 526           inputDevice->addElement(new LEDElement(element, page, usage));
 527 /* Feature elements are not fully tested yet
 528         } else if (type == kIOHIDElementTypeFeature) {
 529           // just for testing feature elements
 530           inputDevice->addElement(new FeatureElement(element, page, usage, elementCount[inputDevice][USAGE_KEY(page, usage)]));
 531 */
 532         } else {
 533           SG_LOG(SG_INPUT, SG_INFO, "HID Element Page/Usage is not supported: type=" << hidTypeByID.getName(type)
 534                     << "(" << type << ")" << ", page=" << hidPageByID.getName(page) << "(" << page << ")"
 535                     << ", usage=" << usage);
 536         }
 537     }
 538   }
 539 }
 540
 541 //
 542 // FGMacOSXInputDevice implementation
 543 //
 544
 545 FGMacOSXInputDevice::FGMacOSXInputDevice(io_object_t device) : device(device), devInterface(NULL)
 546 {
 547   CFDictionaryRef properties = getProperties();
 548   string deviceName = GetHIDElementStringValue(properties, kIOHIDProductKey);
 549   if (deviceName == "") {
 550     deviceName = GetHIDElementStringValue(properties, "USB Product Name");
 551   }
 552
 553   SetName(deviceName);
 554   CFRelease(properties);
 555 }
 556
 557 const char *FGMacOSXInputDevice::TranslateEventName(FGEventData &eventData)
 558 {
 559   FGMacOSXEventData &macEvent = (FGMacOSXEventData &)eventData;
 560   return macEvent.name.c_str();
 561 }
 562
 563
 564 //
 565 // Outputs value to an writable element (like LEDElement)
 566 //
 567 void FGMacOSXInputDevice::Send(const char *eventName, double value)
 568 {
 569   HIDElement *element = elements[eventName];
 570   if (element) {
 571     element->write(devInterface, value);
 572   } else {
 573     SG_LOG(SG_INPUT, SG_WARN, "No element to handle event: " << eventName);
 574   }
 575 }
 576
 577
 578 CFDictionaryRef FGMacOSXInputDevice::getProperties(io_object_t device)
 579 {
 580   IOReturn ret;
 581   CFMutableDictionaryRef properties;
 582
 583   ret = IORegistryEntryCreateCFProperties( device, &properties, kCFAllocatorDefault, kNilOptions);
 584   if (ret != kIOReturnSuccess || !properties) {
 585     SG_LOG(SG_INPUT, SG_WARN, "Error getting device properties.");
 586     return NULL;
 587   }
 588
 589   return properties;
 590 }
 591
 592 //
 593 // Adds HID element to FGMacOSXInputDevice.
 594 // On Mac OS X, update() will read value of each HID element.
 595 // Thus, FGMacOSXInputDevice needs all supported elements when a device is opened
 596 //
 597 void FGMacOSXInputDevice::addElement(HIDElement *element)
 598 {
 599   elements[element->getName()] = element;
 600   int count = elements.size();
 601   SG_LOG(SG_INPUT, SG_DEBUG, "adding element " << count << ":" << element->getName());
 602 }
 603
 604 void FGMacOSXInputDevice::Open() {
 605   // create device interface
 606   IOReturn ret;
 607   SInt32 score;
 608   IOCFPlugInInterface **plugin;
 609   SG_LOG(SG_INPUT, SG_INFO, "Opening HID : " << GetName());
 610
 611   ret = IOCreatePlugInInterfaceForService(device,
 612                                           kIOHIDDeviceUserClientTypeID,
 613                                           kIOCFPlugInInterfaceID,
 614                                           &plugin, &score);
 615
 616   if (ret != kIOReturnSuccess) {
 617     SG_LOG(SG_INPUT, SG_ALERT, "Error creating a plugin for HID : " << GetName());
 618     throw std::exception();
 619     return;
 620   }
 621
 622   HRESULT result = (*plugin)->QueryInterface(plugin,
 623                                              CFUUIDGetUUIDBytes(kIOHIDDeviceInterfaceID),
 624                                              (LPVOID*)&devInterface );
 625
 626   if (result != S_OK)
 627     SG_LOG(SG_INPUT, SG_WARN, "Failed Querying HID plugin interface: " << GetName());
 628
 629   (*plugin)->Release(plugin); // don't leak a ref
 630   if (devInterface == NULL) {
 631     return;
 632     throw std::exception();
 633   }
 634
 635   // store the interface in this instance
 636   ret = (*devInterface)->open(devInterface, 0);
 637   if (ret != kIOReturnSuccess) {
 638     SG_LOG(SG_INPUT, SG_ALERT, "Error opening device interface: " << GetName());
 639     throw std::exception();
 640     return;
 641   }
 642   CFDictionaryRef props = getProperties();
 643
 644   // recursively adds all supported HID elements to FGMacOSXInputDevice
 645   CFTypeRef topLevelElement = CFDictionaryGetValue (props, CFSTR(kIOHIDElementKey));
 646   HIDElementFactory::create(topLevelElement, this);
 647   CFRelease(props);
 648 }
 649
 650 void FGMacOSXInputDevice::Close() {
 651   SG_LOG(SG_INPUT, SG_INFO, "Closing HID: " << GetName());
 652   if (devInterface) {
 653     (*devInterface)->close(devInterface);
 654   }
 655
 656   map<string, HIDElement *>::iterator it;
 657   for (it = elements.begin(); it != elements.end(); it++) {
 658     if ((*it).second)
 659       delete (*it).second;
 660   }
 661   elements.clear();
 662 }
 663
 664 //
 665 // Reads values of assigned HIDElement and generates events
 666 //
 667 void FGMacOSXInputDevice::update(double dt)
 668 {
 669   map<string, HIDElement *>::iterator it;
 670   for (it = elements.begin(); it != elements.end(); it++) {
 671     (*it).second->read(devInterface);
 672     if ((*it).second->isUpdated()) { // Is this needed?
 673       int modifiers = fgGetKeyModifiers();
 674       (*it).second->generateEvent(this, dt, modifiers);
 675     }
 676   }
 677 }
 678
 679 //
 680 // FGMacOSXEventInput implementation
 681 //
 682 FGMacOSXEventInput::~FGMacOSXEventInput() {
 683   deviceIndices.clear();
 684 }
 685
 686 void FGMacOSXEventInput::init()
 687 {
 688   IOReturn ret;
 689   SG_LOG(SG_INPUT, SG_INFO, "initializing FGMacOSXEventInput");
 690
 691   // We want all HID devices for matching
 692   CFMutableDictionaryRef matchingDictionary = IOServiceMatching(kIOHIDDeviceKey);
 693
 694   // Needs to retain machingDict since IOServiceAddMatchingNotification consumes one reference.
 695   matchingDictionary = (CFMutableDictionaryRef) CFRetain(matchingDictionary);
 696   matchingDictionary = (CFMutableDictionaryRef) CFRetain(matchingDictionary);
 697
 698   // Registers Hotplug notification for plug and play.
 699   notifyPort = IONotificationPortCreate(kIOMasterPortDefault);
 700   runLoopSource = IONotificationPortGetRunLoopSource(notifyPort);
 701   CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopSource, kCFRunLoopDefaultMode);
 702   ret = IOServiceAddMatchingNotification(notifyPort, kIOFirstMatchNotification,
 703                                          matchingDictionary, FGMacOSXEventInput::deviceAttached, (void *)this, &addedIterator);
 704   ret = IOServiceAddMatchingNotification(notifyPort, kIOTerminatedNotification,
 705                                          matchingDictionary, FGMacOSXEventInput::deviceDetached, (void *)this, &removedIterator);
 706
 707   // prepare for notification by calling these callback funcs to remove existing HID device iterators
 708   FGMacOSXEventInput::deviceAttached((void *)this, addedIterator);
 709   FGMacOSXEventInput::deviceDetached((void *)this, removedIterator);
 710 }
 711
 712
 713 void FGMacOSXEventInput::attachDevice(io_iterator_t iterator)
 714 {
 715   io_object_t device;
 716
 717   while ((device = IOIteratorNext(iterator))) {
 718     FGMacOSXInputDevice *inputDevice = new FGMacOSXInputDevice(device);
 719     if (inputDevice) {
 720       SG_LOG(SG_INPUT, SG_INFO, "HID Device Atached: " << inputDevice->GetName());
 721       unsigned index = AddDevice(inputDevice);
 722       // Needs to check if AddDevice closed the device due to lack of config file
 723       if (index != FGEventInput::INVALID_DEVICE_INDEX) {
 724         // maps device with FG device index.
 725         // This map is needed in detachDevice to tell FGEventInput which deivce ID is to be removed
 726         deviceIndices[device] = index;
 727       }
 728     }
 729     IOObjectRelease(device);
 730   }
 731 }
 732
 733
 734 void FGMacOSXEventInput::detachDevice(io_iterator_t iterator)
 735 {
 736   io_object_t device;
 737
 738   while ((device = IOIteratorNext(iterator))) {
 739     unsigned index = deviceIndices[device];
 740     if (index != FGEventInput::INVALID_DEVICE_INDEX) {
 741       FGMacOSXInputDevice *inputDevice = dynamic_cast<FGMacOSXInputDevice *>(input_devices[index]);
 742       if (inputDevice) {
 743         SG_LOG(SG_INPUT, SG_INFO, "HID Device Detached: " << inputDevice->GetName());
 744         RemoveDevice(index);
 745         deviceIndices.erase(device);
 746       } else {
 747         SG_LOG(SG_INPUT, SG_WARN, "Invalid device index:" << index << ". Detach failed.");
 748       }
 749     } else {
 750       SG_LOG(SG_INPUT, SG_INFO, "Device ID unmatched: " << (int)device << " No HID deivce is detached since it is not supported by FG.");
 751     }
 752     IOObjectRelease(device);
 753   }
 754 }
 755
 756 //
 757 // read all elements in each input device
 758 //
 759 void FGMacOSXEventInput::update(double dt)
 760 {
 761   FGEventInput::update(dt);
 762
 763   map<int, FGInputDevice*>::const_iterator it;
 764   for (it = input_devices.begin(); it != input_devices.end(); it++) {
 765     if ((*it).second) {
 766       FGMacOSXInputDevice *inputDevice = dynamic_cast<FGMacOSXInputDevice *>((*it).second);
 767       if (inputDevice) {
 768         inputDevice->update(dt);
 769       } else {
 770         SG_LOG(SG_INPUT, SG_WARN, "Invalid device. Update failed.");
 771       }
 772     }
 773   }
 774 }