For AOA keyboard and mouse, only input events were asynchronous.
Register/unregister were called from the main thread.
This had the benefit to fail immediately if the AOA registration failed,
but to support gamepads we want to open/close AOA devices dynamically.
Also, it is better to avoid USB I/O from the main thread.
The HID ids (accessory ids or UHID ids) were defined by the keyboard and
mouse implementations.
Instead, define them in the common HID part, and make that id part of
the sc_hid_event.
This prepares the introduction of gamepad support, which will handle
several gamepads (and ids) in the common HID gamepad code.
An event contained several fields:
- the accessory id
- the HID event data
- a field ack_to_wait specific to the AOA implementation.
Extract the HID event part to prepare the factorization of HID event
creation.
PR #4473 <https://github.com/Genymobile/scrcpy/pull/4473>
USB device disconnection is detected via a hotplug callback when it is
supported.
In addition, report disconnection on libusb calls returning
LIBUSB_ERROR_NO_DEVICE or LIBUSB_ERROR_NOT_FOUND. This allows to detect
disconnection after a libusb call when hotplug is not available.
PR #3011 <https://github.com/Genymobile/scrcpy/pull/3011>
Acksync is used to delay HID events until some request (in practice,
device clipboard synchronization) is acknowledged by the device.
This mechanism will not be necessary for OTG mode.
PR #2974 <https://github.com/Genymobile/scrcpy/pull/2974>
