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Diffstat (limited to 'Samples/CommonSrc/Platform/Linux_Gamepad.cpp')
| -rw-r--r-- | Samples/CommonSrc/Platform/Linux_Gamepad.cpp | 453 |
1 files changed, 0 insertions, 453 deletions
diff --git a/Samples/CommonSrc/Platform/Linux_Gamepad.cpp b/Samples/CommonSrc/Platform/Linux_Gamepad.cpp deleted file mode 100644 index 1546768..0000000 --- a/Samples/CommonSrc/Platform/Linux_Gamepad.cpp +++ /dev/null @@ -1,453 +0,0 @@ -/************************************************************************************ - -Filename : Linux_Gamepad.cpp -Content : Linux implementation of Platform app infrastructure -Created : May 6, 2013 -Authors : Lee Cooper, Simon Hallam - -Copyright : Copyright 2012 Oculus VR, Inc. All Rights reserved. - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - -http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. - -************************************************************************************/ - -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <unistd.h> -#include <glob.h> -#include <linux/joystick.h> -#include "Linux_Gamepad.h" - - -namespace OVR { namespace Platform { namespace Linux { - -const char* pNameXbox360Wireless = "Xbox 360"; -const char* pNameXbox360Wired = "Microsoft X-Box 360"; - - -GamepadManager::GamepadManager() : - pDevice(NULL) -{ -} - -GamepadManager::~GamepadManager() -{ - // if we have an open device, close it - if (pDevice) - { - pDevice->Close(); - pDevice = NULL; - } -} - -UInt32 GamepadManager::GetGamepadCount() -{ - return 1; -} - -bool GamepadManager::GetGamepadState(UInt32 index, GamepadState *pState) -{ - if (!pDevice) - { - // get a list of paths to all the connected joystick devices - glob_t joystickGlobBuffer; - glob("/dev/input/js*", 0, NULL, &joystickGlobBuffer); - - // open each joystick device, until we find one that will work for our needs - for (UInt32 i = 0; i < joystickGlobBuffer.gl_pathc; i++) - { - pDevice = new Gamepad(); - if (pDevice->Open(joystickGlobBuffer.gl_pathv[i])) - { - - if (pDevice->IsSupportedType()) - { - break; - } - } - - // we don't know why the device was not useable, make sure it gets closed cleanly - pDevice->Close(); - pDevice = NULL; - } - - } - - if (pDevice) - { - // we have a device, so update it - pDevice->UpdateState(); - - // copy the device state into the struct param - memcpy(pState, pDevice->GetState(), sizeof(GamepadState)); - - // TODO: is the device still active/connected? if not, we should close it - // and clear pDevice, so that another device can take over - - return true; - } - else - { - return false; - } -} - -Gamepad::Gamepad() : - IsInitialized(false), - Name(String("Undefined")), - Type(UNDEFINED) -{ -} - -Gamepad::~Gamepad() -{ - this->Close(); -} - -bool Gamepad::Open(const String& devicePathName) -{ - Name = "Undefined"; - Type = UNDEFINED; - - FileDescriptor = ::open(devicePathName.ToCStr(), O_RDONLY | O_NONBLOCK); - if (FileDescriptor == -1) - { - return false; - } - - // get the device name - char name[128]; - if (ioctl(FileDescriptor, JSIOCGNAME(sizeof(name)), name) < 0) - { - return false; - } - - Name = name; - - // see if device name matches one of our supported devices - static const UInt32 Wireless360Len = String(pNameXbox360Wireless).GetLength(); - static const UInt32 Wired360Len = String(pNameXbox360Wired).GetLength(); - if (Name.Substring(0, Wireless360Len) == pNameXbox360Wireless) - { - Type = XBOX360GAMEPADWIRELESS; - return true; - } - else if(Name.Substring(0, Wired360Len) == pNameXbox360Wired) - { - Type = XBOX360GAMEPADWIRED; - return true; - } - - return false; -} - -bool Gamepad::Close() -{ - IsInitialized = false; - Name = "Undefined"; - Type = UNDEFINED; - return !::close(FileDescriptor); -} - -void Gamepad::UpdateState() -{ - GamepadState *pState = &State; - js_event gamepadEvent; - - // read the latest batch of events - while (read(FileDescriptor, &gamepadEvent, sizeof(struct js_event)) != -1) - { - switch (gamepadEvent.type) - { - case JS_EVENT_BUTTON: - IsInitialized = true; - SetStateButton(pState, gamepadEvent.number, gamepadEvent.value); - break; - - case JS_EVENT_AXIS: - IsInitialized = true; - SetStateAxis(pState, gamepadEvent.number, gamepadEvent.value); - break; - - case JS_EVENT_BUTTON | JS_EVENT_INIT: - if (IsInitialized) // skip the fake values during device event initialization - { - SetStateButton(pState, gamepadEvent.number, gamepadEvent.value); - } - break; - - case JS_EVENT_AXIS | JS_EVENT_INIT: - if (IsInitialized) // skip the fake values during device event initialization - { - SetStateAxis(pState, gamepadEvent.number, gamepadEvent.value); - } - break; - - default: - LogText("OVR::Linux::UpdateState unknown event type\n"); - } - } -} - -const GamepadState* Gamepad::GetState() -{ - return &State; -} - - -bool Gamepad::IsSupportedType() -{ - return Type != UNDEFINED; -} - -const String& Gamepad::GetIdentifier() -{ - return Name; -} - -static inline float NormalizeGamepadStickXbox360(SInt32 in) -{ - float v; - if (abs(in) < 9000) return 0; - else if (in > 9000) v = (float)in - 9000; - else v = (float)in + 9000; - return v / (32767 - 9000); -} - -static inline float NormalizeGamepadTriggerXbox360(SInt32 in, - SInt32 offset, - SInt32 deadBand, - float divisor) -{ - in += offset; - - if (in < deadBand) - { - return 0; - } - else - { - return float(in - deadBand) / divisor; - } -} - -static inline void UpdateButtonMaskAndBitfield(GamepadState *pState, - SInt32 value, - UInt32 buttonBitfield) -{ - if (value) - { - pState->Buttons |= buttonBitfield; - } - else - { - pState->Buttons = pState->Buttons & (0xFFFFFFFF ^ buttonBitfield); - } -} - -void Gamepad::SetStateAxis(GamepadState *pState, UInt32 axis, SInt32 value) -{ - // some pads/sticks have lots in common with one another, - // handle those shared cases first - switch (Type) - { - case XBOX360GAMEPADWIRELESS: - case XBOX360GAMEPADWIRED: - switch (axis) - { - case 0: - pState->LX = NormalizeGamepadStickXbox360(value); - break; - - case 1: - pState->LY = -NormalizeGamepadStickXbox360(value); - break; - - case 3: - pState->RX = NormalizeGamepadStickXbox360(value); - break; - - case 4: - pState->RY = -NormalizeGamepadStickXbox360(value); - break; - } - break; - - case UNDEFINED: - default: - break; - } - - // handle the special cases, or pads/sticks which are unique - switch (Type) - { - case XBOX360GAMEPADWIRELESS: - switch (axis) - { - case 2: - pState->LT = NormalizeGamepadTriggerXbox360(value, 0, 500, 32267); - break; - - case 5: - pState->RT = NormalizeGamepadTriggerXbox360(value, 0, 500, 32267); - break; - } - break; - - case XBOX360GAMEPADWIRED: - switch (axis) - { - case 2: - pState->LT = NormalizeGamepadTriggerXbox360(value, 32767, 1000, 64535); - break; - - case 5: - pState->RT = NormalizeGamepadTriggerXbox360(value, 32767, 1000, 64535); - break; - - case 6: - if (value == 0) - { - UpdateButtonMaskAndBitfield(pState, 0, Gamepad_Left); - UpdateButtonMaskAndBitfield(pState, 0, Gamepad_Right); - } - else if (value < 0) - { - UpdateButtonMaskAndBitfield(pState, 1, Gamepad_Left); - } - else if (value > 0) - { - UpdateButtonMaskAndBitfield(pState, 1, Gamepad_Right); - } - break; - - case 7: - if (value == 0) - { - UpdateButtonMaskAndBitfield(pState, 0, Gamepad_Up); - UpdateButtonMaskAndBitfield(pState, 0, Gamepad_Down); - } - else if (value < 0) - { - UpdateButtonMaskAndBitfield(pState, 1, Gamepad_Up); - } - else if (value > 0) - { - UpdateButtonMaskAndBitfield(pState, 1, Gamepad_Down); - } - break; - } - break; - - case UNDEFINED: - default: - break; - } -} - -void Gamepad::SetStateButton(GamepadState *pState, UInt32 button, SInt32 value) -{ - // some pads/sticks have lots in common with one another, - // handle those shared cases first - switch (Type) - { - case XBOX360GAMEPADWIRELESS: - case XBOX360GAMEPADWIRED: - switch (button) - { - case 0: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_A); - break; - - case 1: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_B); - break; - - case 2: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_X); - break; - - case 3: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_Y); - break; - - case 4: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_L1); - break; - - case 5: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_R1); - break; - - case 6: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_Back); - break; - - case 7: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_Start); - break; - - case 8: - // we have no value defined for the Xbox/power button - break; - - case 9: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_LStick); - break; - - case 10: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_RStick); - break; - } - break; - - case UNDEFINED: - default: - break; - } - - // handle the special cases, or pads/sticks which are unique - switch (Type) - { - case XBOX360GAMEPADWIRELESS: - switch (button) - { - case 11: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_Left); - break; - - case 12: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_Right); - break; - - case 13: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_Up); - break; - - case 14: - UpdateButtonMaskAndBitfield(pState, value, Gamepad_Down); - break; - } - - case XBOX360GAMEPADWIRED: - break; - - case UNDEFINED: - default: - break; - } -} - -}}} // OVR::Platform::Linux - |