This adds hotplugging support to the evdev input backend. We use
libudev to monitor changes to input devices in a separate thread.
Removed devices are removed from the devices list, and new devices
are added to the list.
The effect is that controllers are usable immediately after plugging
them without having to manually refresh devices (if they were
configured to be used, of course).
Changes UpdateInput() to skip if we can't lock the mutex, instead of
potentially blocking the CPU thread and causing a short but noticeable
frame drop.
This adds RemoveDevice() to ControllerInterface, fixes ExpressionParser
and some other code to support device removals without crashing,
and adds an IsValid() method to Device, to prepare for hotplugging.
This adds RegisterHotplugCallback() to register a callback which will
be invoked by the input backends' hotplug threads when there is a new
device, so that Core (GCKeyboard, GCPad, Wiimote, Hotkey) can reload
the configuration without adding a dependency to Core from InputCommon.
This makes the device ID assigning code common to all backends, by
moving it to AddDevice() instead of copy-pasting or replicating
the logic in the backends.
Also, to prepare for hotplugging, instead of relying on a name usage
count, the new ID assigning system always starts from ID 0 and tries
to assign the first ID that is not used.
The values are expected to be in the 0.0-1.0 range (as indicated by the
comment), and other parts of Dolphin also expect it to be in that range
since the "full" axis has a -1.0 to 1.0 range. However, this is not
always the case and fvalue can end up being outside of the range. This
clamps fvalue to always be in the 0.0 and 1.0 range.
Small cleanup by using std::shared_ptr and getting rid of
ciface.Devices() which just returned the m_devices (which defeats the
point of making m_devices protected).
Incidentally, this should make the code safer when we have
different threads accessing devices in the future (for hotplug?).
A lot of code use Device references directly so there is
no easy way to remove FindDevice() and make those unique_ptrs.
Previously, the devices vector would be passed to all backends. They
would then manually push_back to it to add new devices. This was fine
but caused issues when trying to add synchronisation.
Instead, backends now call AddDevice() to fill m_devices so that it is
not accessible from the outside.
Disclaimer: I can't test if this works on xbox one controllers, i don't have one. But i have conformed that this UpdateMotors() is related to rumble for emulated wiimotes.
This partially reverts commit "XInput: Apply immediately as well" (1958a10b6f) from pr # https://github.com/dolphin-emu/dolphin/pull/1560
Hopefully this fixes the xbox one controller rumble issue:
https://bugs.dolphin-emu.org/issues/9071
And in theory it might reduce the used usb bandwidth, as it was originally intended before pr 1560.
@JMC47: Please do a good amount of testing, to see if this breaks rumble for wiimotes or gamecube controllers emulated with xinput devices.
Lets the user set the following in intervals of 10 between 10 and 100;
- Stick/Radius (default 100,000000)
- Triggers/Threshold (default 90,000000)
- Tilt/Modifier/Range (default 50,000000) + mapped Tilt/Modifier button
to the configurations for wiimotes & nunchuks
If there were two commands in the buffer at once, it would only run the
first because of an error in UpdateInput.
If you sent the command "SET C" it would segfault because of a logic
issue in ParseCommand.
Currently only works on unix, but can be extended to other systems. Can
also be extended to do wiimotes.
Searches the Pipes folder for readable named pipes and creates a dolphin
input device out of them. Send controller inputs to the game by writing
to the file. Commands are described in Pipes.h.
Previously, MacOpenFile only overrode anything on OS X; otherwise it was
just a useless method, which is presumably why it wasn't marked override
in the first place. Address this more sanely by wrapping it in #ifdef
__APPLE__.
Léo Lam