692 lines
21 KiB
Python
692 lines
21 KiB
Python
# ----------------------------------------------------------------------------
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# pyglet
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# Copyright (c) 2006-2008 Alex Holkner
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# Copyright (c) 2008-2022 pyglet contributors
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of pyglet nor the names of its
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# contributors may be used to endorse or promote products
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# derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# ----------------------------------------------------------------------------
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import os
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import time
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import fcntl
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import ctypes
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from ctypes import c_uint16 as _u16
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from ctypes import c_int16 as _s16
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from ctypes import c_uint32 as _u32
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from ctypes import c_int32 as _s32
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from ctypes import c_int64 as _s64
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from concurrent.futures import ThreadPoolExecutor
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import pyglet
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from pyglet.app.xlib import XlibSelectDevice
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from .base import Device, RelativeAxis, AbsoluteAxis, Button, Joystick, Controller
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from .base import DeviceOpenException, ControllerManager
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from .evdev_constants import *
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from .controller import get_mapping, Relation
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_IOC_NRBITS = 8
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_IOC_TYPEBITS = 8
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_IOC_SIZEBITS = 14
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_IOC_DIRBITS = 2
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_IOC_NRSHIFT = 0
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_IOC_TYPESHIFT = (_IOC_NRSHIFT + _IOC_NRBITS)
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_IOC_SIZESHIFT = (_IOC_TYPESHIFT + _IOC_TYPEBITS)
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_IOC_DIRSHIFT = (_IOC_SIZESHIFT + _IOC_SIZEBITS)
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_IOC_NONE = 0
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_IOC_WRITE = 1
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_IOC_READ = 2
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def _IOC(dir, type, nr, size):
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return ((dir << _IOC_DIRSHIFT) |
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(type << _IOC_TYPESHIFT) |
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(nr << _IOC_NRSHIFT) |
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(size << _IOC_SIZESHIFT))
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def _IOR(type, nr, struct):
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request = _IOC(_IOC_READ, ord(type), nr, ctypes.sizeof(struct))
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def f(fileno):
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buffer = struct()
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fcntl.ioctl(fileno, request, buffer)
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return buffer
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return f
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def _IOR_len(type, nr):
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def f(fileno, buffer):
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request = _IOC(_IOC_READ, ord(type), nr, ctypes.sizeof(buffer))
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fcntl.ioctl(fileno, request, buffer)
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return buffer
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return f
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def _IOR_str(type, nr):
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g = _IOR_len(type, nr)
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def f(fileno, length=256):
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return g(fileno, ctypes.create_string_buffer(length)).value
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return f
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def _IOW(type, nr):
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def f(fileno, buffer):
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request = _IOC(_IOC_WRITE, ord(type), nr, ctypes.sizeof(buffer))
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fcntl.ioctl(fileno, request, buffer)
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return f
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# Structures from /linux/blob/master/include/uapi/linux/input.h
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class Timeval(ctypes.Structure):
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_fields_ = (
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('tv_sec', _s64),
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('tv_usec', _s64)
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)
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class InputEvent(ctypes.Structure):
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_fields_ = (
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('time', Timeval),
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('type', _u16),
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('code', _u16),
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('value', _s32)
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)
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class InputID(ctypes.Structure):
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_fields_ = (
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('bustype', _u16),
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('vendor', _u16),
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('product', _u16),
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('version', _u16),
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)
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class InputABSInfo(ctypes.Structure):
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_fields_ = (
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('value', _s32),
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('minimum', _s32),
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('maximum', _s32),
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('fuzz', _s32),
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('flat', _s32),
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)
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class FFReplay(ctypes.Structure):
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_fields_ = (
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('length', _u16),
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('delay', _u16)
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)
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class FFTrigger(ctypes.Structure):
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_fields_ = (
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('button', _u16),
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('interval', _u16)
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)
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class FFEnvelope(ctypes.Structure):
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_fields_ = [
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('attack_length', _u16),
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('attack_level', _u16),
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('fade_length', _u16),
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('fade_level', _u16),
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]
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class FFConstantEffect(ctypes.Structure):
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_fields_ = [
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('level', _s16),
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('ff_envelope', FFEnvelope),
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]
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class FFRampEffect(ctypes.Structure):
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_fields_ = [
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('start_level', _s16),
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('end_level', _s16),
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('ff_envelope', FFEnvelope),
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]
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class FFConditionEffect(ctypes.Structure):
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_fields_ = [
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('right_saturation', _u16),
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('left_saturation', _u16),
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('right_coeff', _s16),
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('left_coeff', _s16),
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('deadband', _u16),
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('center', _s16),
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]
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class FFPeriodicEffect(ctypes.Structure):
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_fields_ = [
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('waveform', _u16),
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('period', _u16),
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('magnitude', _s16),
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('offset', _s16),
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('phase', _u16),
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('envelope', FFEnvelope),
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('custom_len', _u32),
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('custom_data', ctypes.POINTER(_s16)),
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]
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class FFRumbleEffect(ctypes.Structure):
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_fields_ = (
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('strong_magnitude', _u16),
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('weak_magnitude', _u16)
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)
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class FFEffectType(ctypes.Union):
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_fields_ = (
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('ff_constant_effect', FFConstantEffect),
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('ff_ramp_effect', FFRampEffect),
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('ff_periodic_effect', FFPeriodicEffect),
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('ff_condition_effect', FFConditionEffect * 2),
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('ff_rumble_effect', FFRumbleEffect),
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)
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class FFEvent(ctypes.Structure):
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_fields_ = (
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('type', _u16),
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('id', _s16),
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('direction', _u16),
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('ff_trigger', FFTrigger),
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('ff_replay', FFReplay),
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('u', FFEffectType)
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)
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EVIOCGVERSION = _IOR('E', 0x01, ctypes.c_int)
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EVIOCGID = _IOR('E', 0x02, InputID)
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EVIOCGNAME = _IOR_str('E', 0x06)
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EVIOCGPHYS = _IOR_str('E', 0x07)
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EVIOCGUNIQ = _IOR_str('E', 0x08)
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EVIOCSFF = _IOW('E', 0x80)
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def EVIOCGBIT(fileno, ev, buffer):
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return _IOR_len('E', 0x20 + ev)(fileno, buffer)
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def EVIOCGABS(fileno, abs):
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buffer = InputABSInfo()
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return _IOR_len('E', 0x40 + abs)(fileno, buffer)
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def get_set_bits(bytestring):
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bits = set()
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j = 0
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for byte in bytestring:
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for i in range(8):
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if byte & 1:
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bits.add(j + i)
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byte >>= 1
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j += 8
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return bits
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_abs_names = {
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ABS_X: AbsoluteAxis.X,
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ABS_Y: AbsoluteAxis.Y,
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ABS_Z: AbsoluteAxis.Z,
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ABS_RX: AbsoluteAxis.RX,
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ABS_RY: AbsoluteAxis.RY,
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ABS_RZ: AbsoluteAxis.RZ,
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ABS_HAT0X: AbsoluteAxis.HAT_X,
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ABS_HAT0Y: AbsoluteAxis.HAT_Y,
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}
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_rel_names = {
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REL_X: RelativeAxis.X,
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REL_Y: RelativeAxis.Y,
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REL_Z: RelativeAxis.Z,
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REL_RX: RelativeAxis.RX,
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REL_RY: RelativeAxis.RY,
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REL_RZ: RelativeAxis.RZ,
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REL_WHEEL: RelativeAxis.WHEEL,
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}
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def _create_control(fileno, event_type, event_code):
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if event_type == EV_ABS:
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raw_name = abs_raw_names.get(event_code, 'EV_ABS(%x)' % event_code)
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name = _abs_names.get(event_code)
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absinfo = EVIOCGABS(fileno, event_code)
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value = absinfo.value
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minimum = absinfo.minimum
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maximum = absinfo.maximum
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control = AbsoluteAxis(name, minimum, maximum, raw_name)
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control.value = value
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if name == 'hat_y':
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control.inverted = True
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elif event_type == EV_REL:
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raw_name = rel_raw_names.get(event_code, 'EV_REL(%x)' % event_code)
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name = _rel_names.get(event_code)
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# TODO min/max?
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control = RelativeAxis(name, raw_name)
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elif event_type == EV_KEY:
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raw_name = key_raw_names.get(event_code, 'EV_KEY(%x)' % event_code)
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name = None
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control = Button(name, raw_name)
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else:
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value = minimum = maximum = 0 # TODO
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return None
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control._event_type = event_type
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control._event_code = event_code
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return control
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event_types = {
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EV_KEY: KEY_MAX,
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EV_REL: REL_MAX,
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EV_ABS: ABS_MAX,
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EV_MSC: MSC_MAX,
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EV_LED: LED_MAX,
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EV_SND: SND_MAX,
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EV_FF: FF_MAX,
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}
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class EvdevDevice(XlibSelectDevice, Device):
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_fileno = None
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def __init__(self, display, filename):
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self._filename = filename
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fileno = os.open(filename, os.O_RDONLY)
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# event_version = EVIOCGVERSION(fileno).value
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self._id = EVIOCGID(fileno)
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self.id_bustype = self._id.bustype
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self.id_vendor = hex(self._id.vendor)
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self.id_product = hex(self._id.product)
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self.id_version = self._id.version
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name = EVIOCGNAME(fileno)
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try:
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name = name.decode('utf-8')
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except UnicodeDecodeError:
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try:
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name = name.decode('latin-1')
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except UnicodeDecodeError:
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pass
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try:
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self.phys = EVIOCGPHYS(fileno)
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except OSError:
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self.phys = ''
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try:
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self.uniq = EVIOCGUNIQ(fileno)
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except OSError:
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self.uniq = ''
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self.controls = []
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self.control_map = {}
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self.ff_types = []
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event_types_bits = (ctypes.c_byte * 4)()
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EVIOCGBIT(fileno, 0, event_types_bits)
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for event_type in get_set_bits(event_types_bits):
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if event_type not in event_types:
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continue
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max_code = event_types[event_type]
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nbytes = max_code // 8 + 1
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event_codes_bits = (ctypes.c_byte * nbytes)()
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EVIOCGBIT(fileno, event_type, event_codes_bits)
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if event_type == EV_FF:
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self.ff_types.extend(get_set_bits(event_codes_bits))
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else:
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for event_code in get_set_bits(event_codes_bits):
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control = _create_control(fileno, event_type, event_code)
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if control:
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self.control_map[(event_type, event_code)] = control
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self.controls.append(control)
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os.close(fileno)
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super().__init__(display, name)
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def get_guid(self):
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"""Generate an SDL2 style GUID from the device ID"""
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hex_bustype = format(self._id.bustype & 0xFF, '02x')
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hex_vendor = format(self._id.vendor & 0xFF, '02x')
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hex_product = format(self._id.product & 0xFF, '02x')
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hex_version = format(self._id.version & 0xFF, '02x')
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shifted_bustype = format(self._id.bustype >> 8, '02x')
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shifted_vendor = format(self._id.vendor >> 8, '02x')
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shifted_product = format(self._id.product >> 8, '02x')
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shifted_version = format(self._id.version >> 8, '02x')
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slug = "{:0>2}{:0>2}0000{:0>2}{:0>2}0000{:0>2}{:0>2}0000{:0>2}{:0>2}0000"
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return slug.format(hex_bustype, shifted_bustype, hex_vendor, shifted_vendor,
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hex_product, shifted_product, hex_version, shifted_version)
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def open(self, window=None, exclusive=False):
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super().open(window, exclusive)
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try:
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self._fileno = os.open(self._filename, os.O_RDWR | os.O_NONBLOCK)
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except OSError as e:
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raise DeviceOpenException(e)
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pyglet.app.platform_event_loop.select_devices.add(self)
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def close(self):
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super().close()
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if not self._fileno:
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return
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pyglet.app.platform_event_loop.select_devices.remove(self)
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os.close(self._fileno)
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self._fileno = None
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def get_controls(self):
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return self.controls
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# Force Feedback methods
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def ff_upload_effect(self, structure):
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os.write(self._fileno, structure)
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# XlibSelectDevice interface
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def fileno(self):
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return self._fileno
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def poll(self):
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return False
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def select(self):
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if not self._fileno:
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return
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try:
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events = (InputEvent * 64)()
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bytes_read = os.readv(self._fileno, events)
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except OSError:
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self.close()
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return
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n_events = bytes_read // ctypes.sizeof(InputEvent)
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for event in events[:n_events]:
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try:
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control = self.control_map[(event.type, event.code)]
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control.value = event.value
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except KeyError:
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pass
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class FFController(Controller):
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"""Controller that supports force-feedback"""
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_fileno = None
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_weak_effect = None
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_play_weak_event = None
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_stop_weak_event = None
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_strong_effect = None
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_play_strong_event = None
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_stop_strong_event = None
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def open(self, window=None, exclusive=False):
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super().open(window, exclusive)
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self._fileno = self.device.fileno()
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# Create Force Feedback effects & events when opened:
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# https://www.kernel.org/doc/html/latest/input/ff.html
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self._weak_effect = FFEvent(FF_RUMBLE, -1)
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EVIOCSFF(self._fileno, self._weak_effect)
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self._play_weak_event = InputEvent(Timeval(), EV_FF, self._weak_effect.id, 1)
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self._stop_weak_event = InputEvent(Timeval(), EV_FF, self._weak_effect.id, 0)
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self._strong_effect = FFEvent(FF_RUMBLE, -1)
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EVIOCSFF(self._fileno, self._strong_effect)
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self._play_strong_event = InputEvent(Timeval(), EV_FF, self._strong_effect.id, 1)
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self._stop_strong_event = InputEvent(Timeval(), EV_FF, self._strong_effect.id, 0)
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def rumble_play_weak(self, strength=1.0, duration=0.5):
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effect = self._weak_effect
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effect.u.ff_rumble_effect.weak_magnitude = int(max(min(1.0, strength), 0) * 0xFFFF)
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effect.ff_replay.length = int(duration * 1000)
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EVIOCSFF(self._fileno, effect)
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self.device.ff_upload_effect(self._play_weak_event)
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def rumble_play_strong(self, strength=1.0, duration=0.5):
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effect = self._strong_effect
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effect.u.ff_rumble_effect.strong_magnitude = int(max(min(1.0, strength), 0) * 0xFFFF)
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effect.ff_replay.length = int(duration * 1000)
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EVIOCSFF(self._fileno, effect)
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self.device.ff_upload_effect(self._play_strong_event)
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def rumble_stop_weak(self):
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self.device.ff_upload_effect(self._stop_weak_event)
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def rumble_stop_strong(self):
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self.device.ff_upload_effect(self._stop_strong_event)
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class EvdevControllerManager(ControllerManager, XlibSelectDevice):
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def __init__(self, display=None):
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super().__init__()
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self._display = display
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self._devices_file = open('/proc/bus/input/devices')
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self._device_names = self._get_device_names()
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self._controllers = {}
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self._thread_pool = ThreadPoolExecutor(max_workers=1)
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for name in self._device_names:
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path = os.path.join('/dev/input', name)
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try:
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device = EvdevDevice(self._display, path)
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except OSError:
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continue
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controller = _create_controller(device)
|
|
if controller:
|
|
self._controllers[name] = controller
|
|
|
|
pyglet.app.platform_event_loop.select_devices.add(self)
|
|
|
|
def __del__(self):
|
|
self._devices_file.close()
|
|
|
|
def fileno(self):
|
|
"""Allow this class to be Selectable"""
|
|
return self._devices_file.fileno()
|
|
|
|
@staticmethod
|
|
def _get_device_names():
|
|
return {name for name in os.listdir('/dev/input') if name.startswith('event')}
|
|
|
|
def _make_device_callback(self, future):
|
|
name, device = future.result()
|
|
if not device:
|
|
return
|
|
|
|
if name in self._controllers:
|
|
controller = self._controllers.get(name)
|
|
else:
|
|
controller = _create_controller(device)
|
|
self._controllers[name] = controller
|
|
|
|
if controller:
|
|
self.dispatch_event('on_connect', controller)
|
|
|
|
def _make_device(self, name, count=1):
|
|
path = os.path.join('/dev/input', name)
|
|
while count > 0:
|
|
try:
|
|
return name, EvdevDevice(self._display, path)
|
|
except OSError:
|
|
if count > 0:
|
|
time.sleep(0.1)
|
|
count -= 1
|
|
return None, None
|
|
|
|
def select(self):
|
|
"""Triggered whenever the devices_file changes."""
|
|
new_device_files = self._get_device_names()
|
|
appeared = new_device_files - self._device_names
|
|
disappeared = self._device_names - new_device_files
|
|
self._device_names = new_device_files
|
|
|
|
for name in appeared:
|
|
future = self._thread_pool.submit(self._make_device, name, count=10)
|
|
future.add_done_callback(self._make_device_callback)
|
|
|
|
for name in disappeared:
|
|
controller = self._controllers.get(name)
|
|
if controller:
|
|
self.dispatch_event('on_disconnect', controller)
|
|
|
|
def get_controllers(self) -> list[Controller]:
|
|
return list(self._controllers.values())
|
|
|
|
|
|
def get_devices(display=None):
|
|
_devices = {}
|
|
base = '/dev/input'
|
|
for filename in os.listdir(base):
|
|
if filename.startswith('event'):
|
|
path = os.path.join(base, filename)
|
|
if path in _devices:
|
|
continue
|
|
|
|
try:
|
|
_devices[path] = EvdevDevice(display, path)
|
|
except OSError:
|
|
pass
|
|
|
|
return list(_devices.values())
|
|
|
|
|
|
def _create_joystick(device):
|
|
# Look for something with an ABS X and ABS Y axis, and a joystick 0 button
|
|
have_x = False
|
|
have_y = False
|
|
have_button = False
|
|
for control in device.controls:
|
|
if control._event_type == EV_ABS and control._event_code == ABS_X:
|
|
have_x = True
|
|
elif control._event_type == EV_ABS and control._event_code == ABS_Y:
|
|
have_y = True
|
|
elif control._event_type == EV_KEY and control._event_code in (BTN_JOYSTICK, BTN_GAMEPAD):
|
|
have_button = True
|
|
if not (have_x and have_y and have_button):
|
|
return
|
|
|
|
return Joystick(device)
|
|
|
|
|
|
def get_joysticks(display=None):
|
|
return [joystick for joystick in
|
|
[_create_joystick(device) for device in get_devices(display)]
|
|
if joystick is not None]
|
|
|
|
|
|
def _detect_controller_mapping(device):
|
|
# If no explicit mapping is available, we can
|
|
# detect it from the Linux gamepad specification:
|
|
# https://www.kernel.org/doc/html/v4.13/input/gamepad.html
|
|
# Note: legacy device drivers don't always adhere to this.
|
|
mapping = dict(guid=device.get_guid(), name=device.name)
|
|
|
|
_aliases = {BTN_MODE: 'guide', BTN_SELECT: 'back', BTN_START: 'start',
|
|
BTN_SOUTH: 'a', BTN_EAST: 'b', BTN_WEST: 'x', BTN_NORTH: 'y',
|
|
BTN_TL: 'leftshoulder', BTN_TR: 'rightshoulder',
|
|
BTN_TL2: 'lefttrigger', BTN_TR2: 'righttrigger',
|
|
BTN_THUMBL: 'leftstick', BTN_THUMBR: 'rightstick',
|
|
BTN_DPAD_UP: 'dpup', BTN_DPAD_DOWN: 'dpdown',
|
|
BTN_DPAD_LEFT: 'dpleft', BTN_DPAD_RIGHT: 'dpright',
|
|
|
|
ABS_HAT0X: 'dpleft', # 'dpright',
|
|
ABS_HAT0Y: 'dpup', # 'dpdown',
|
|
ABS_Z: 'lefttrigger', ABS_RZ: 'righttrigger',
|
|
ABS_X: 'leftx', ABS_Y: 'lefty', ABS_RX: 'rightx', ABS_RY: 'righty'}
|
|
|
|
button_controls = [control for control in device.controls if isinstance(control, Button)]
|
|
axis_controls = [control for control in device.controls if isinstance(control, AbsoluteAxis)]
|
|
hat_controls = [control for control in device.controls if control.name in ('hat_x', 'hat_y')]
|
|
|
|
for i, control in enumerate(button_controls):
|
|
name = _aliases.get(control._event_code)
|
|
if name:
|
|
mapping[name] = Relation('button', i)
|
|
|
|
for i, control in enumerate(axis_controls):
|
|
name = _aliases.get(control._event_code)
|
|
if name:
|
|
mapping[name] = Relation('axis', i)
|
|
|
|
for i, control in enumerate(hat_controls):
|
|
name = _aliases.get(control._event_code)
|
|
if name:
|
|
index = 1 + i << 1
|
|
mapping[name] = Relation('hat0', index)
|
|
|
|
return mapping
|
|
|
|
|
|
def _create_controller(device):
|
|
for control in device.controls:
|
|
if control._event_type == EV_KEY and control._event_code == BTN_GAMEPAD:
|
|
break
|
|
else:
|
|
return None # Game Controllers must have a BTN_GAMEPAD
|
|
|
|
mapping = get_mapping(device.get_guid())
|
|
if not mapping:
|
|
mapping = _detect_controller_mapping(device)
|
|
|
|
if FF_RUMBLE in device.ff_types:
|
|
return FFController(device, mapping)
|
|
else:
|
|
return Controller(device, mapping)
|
|
|
|
|
|
def get_controllers(display=None):
|
|
return [controller for controller in
|
|
[_create_controller(device) for device in get_devices(display)]
|
|
if controller is not None]
|