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06c141475c
Implements native standard layout for Linux gamepads by using the kernel-provided button IDs, thereby expanding support to gamepads not listed in gamecontrollerdb.txt. Linux's docs: https://www.kernel.org/doc/Documentation/input/gamepad.txt SDL2's source: https://fossies.org/linux/SDL2/src/joystick/linux/SDL_sysjoystick.c#l_1740 Note that I am NOT 100% convinced about the X/Y swap between Xbox and PlayStation controllers - the Xbox compatible pad I have however does have BTN_NORTH and BTN_WEST swapped (and thus BTN_X and BTN_Y assigned right), which confirms SDL's logic and opposes the kernel docs. Tested with this gamepad: "20d6:2802 BDA Xbox ONE Core controller", label says "PowerA Model 1508491-02" - even after clearing out gamecontrollerdb.txt, examples/gamepad shows a 100% correct mapping. Closes #2052
139 lines
2.9 KiB
Go
139 lines
2.9 KiB
Go
// Copyright 2022 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build !android && !nintendosdk
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package gamepad
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import (
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"unsafe"
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"golang.org/x/sys/unix"
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)
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const (
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_ABS_X = 0x00
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_ABS_Y = 0x01
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_ABS_Z = 0x02
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_ABS_RX = 0x03
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_ABS_RY = 0x04
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_ABS_RZ = 0x05
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_ABS_HAT0X = 0x10
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_ABS_HAT0Y = 0x11
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_ABS_HAT1X = 0x12
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_ABS_HAT1Y = 0x13
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_ABS_HAT2X = 0x14
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_ABS_HAT2Y = 0x15
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_ABS_HAT3Y = 0x17
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_ABS_MAX = 0x3f
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_ABS_CNT = _ABS_MAX + 1
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_BTN_MISC = 0x100
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_BTN_GAMEPAD = 0x130
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_BTN_A = 0x130
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_BTN_B = 0x131
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_BTN_NORTH = 0x133
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_BTN_X = 0x133
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_BTN_WEST = 0x134
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_BTN_Y = 0x134
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_BTN_TL = 0x136
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_BTN_TR = 0x137
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_BTN_TL2 = 0x138
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_BTN_TR2 = 0x139
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_BTN_SELECT = 0x13a
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_BTN_START = 0x13b
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_BTN_MODE = 0x13c
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_BTN_THUMBL = 0x13d
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_BTN_THUMBR = 0x13e
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_BTN_DPAD_UP = 0x220
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_BTN_DPAD_DOWN = 0x221
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_BTN_DPAD_LEFT = 0x222
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_BTN_DPAD_RIGHT = 0x223
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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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_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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_KEY_MAX = 0x2ff
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_KEY_CNT = _KEY_MAX + 1
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_SYN_REPORT = 0
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_SYN_DROPPED = 3
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)
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func _IOC(dir, typ, nr, size uint) uint {
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return dir<<_IOC_DIRSHIFT | typ<<_IOC_TYPESHIFT | nr<<_IOC_NRSHIFT | size<<_IOC_SIZESHIFT
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}
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func _IOR(typ, nr, size uint) uint {
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return _IOC(_IOC_READ, typ, nr, size)
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}
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func _EVIOCGABS(abs uint) uint {
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return _IOR('E', 0x40+abs, uint(unsafe.Sizeof(input_absinfo{})))
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}
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func _EVIOCGBIT(ev, len uint) uint {
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return _IOC(_IOC_READ, 'E', 0x20+ev, len)
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}
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func _EVIOCGID() uint {
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return _IOR('E', 0x02, uint(unsafe.Sizeof(input_id{})))
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}
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func _EVIOCGNAME(len uint) uint {
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return _IOC(_IOC_READ, 'E', 0x06, len)
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}
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type input_absinfo struct {
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value int32
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minimum int32
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maximum int32
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fuzz int32
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flat int32
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resolution int32
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}
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type input_event struct {
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time unix.Timeval
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typ uint16
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code uint16
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value int32
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}
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type input_id struct {
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bustype uint16
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vendor uint16
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product uint16
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version uint16
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}
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func ioctl(fd int, request uint, ptr unsafe.Pointer) error {
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r, _, e := unix.Syscall(unix.SYS_IOCTL, uintptr(fd), uintptr(request), uintptr(ptr))
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if r < 0 {
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return unix.Errno(e)
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}
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return nil
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}
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