mirror of https://github.com/Genymobile/scrcpy
113 lines
3.6 KiB
Markdown
113 lines
3.6 KiB
Markdown
# HID/OTG
|
|
|
|
By default, _scrcpy_ injects input events at the Android API level. As an
|
|
alternative, when connected over USB, it is possible to send HID events, so that
|
|
scrcpy behaves as if it was a physical keyboard and/or mouse connected to the
|
|
Android device.
|
|
|
|
A special [OTG](#otg) mode allows to control the device without mirroring (and
|
|
without USB debugging).
|
|
|
|
|
|
## Physical keyboard simulation
|
|
|
|
By default, _scrcpy_ uses Android key or text injection. It works everywhere,
|
|
but is limited to ASCII.
|
|
|
|
Instead, it can simulate a physical USB keyboard on Android to provide a better
|
|
input experience (using [USB HID over AOAv2][hid-aoav2]): the virtual keyboard
|
|
is disabled and it works for all characters and IME.
|
|
|
|
[hid-aoav2]: https://source.android.com/devices/accessories/aoa2#hid-support
|
|
|
|
However, it only works if the device is connected via USB.
|
|
|
|
Note: On Windows, it may only work in [OTG mode](#otg), not while mirroring (it
|
|
is not possible to open a USB device if it is already open by another process
|
|
like the _adb daemon_).
|
|
|
|
To enable this mode:
|
|
|
|
```bash
|
|
scrcpy --hid-keyboard
|
|
scrcpy -K # short version
|
|
```
|
|
|
|
If it fails for some reason (for example because the device is not connected via
|
|
USB), it automatically fallbacks to the default mode (with a log in the
|
|
console). This allows using the same command line options when connected over
|
|
USB and TCP/IP.
|
|
|
|
In this mode, raw key events (scancodes) are sent to the device, independently
|
|
of the host key mapping. Therefore, if your keyboard layout does not match, it
|
|
must be configured on the Android device, in Settings → System → Languages and
|
|
input → [Physical keyboard].
|
|
|
|
This settings page can be started directly:
|
|
|
|
```bash
|
|
adb shell am start -a android.settings.HARD_KEYBOARD_SETTINGS
|
|
```
|
|
|
|
However, the option is only available when the HID keyboard is enabled (or when
|
|
a physical keyboard is connected).
|
|
|
|
[Physical keyboard]: https://github.com/Genymobile/scrcpy/pull/2632#issuecomment-923756915
|
|
|
|
|
|
## Physical mouse simulation
|
|
|
|
By default, _scrcpy_ uses Android mouse events injection with absolute
|
|
coordinates. By simulating a physical mouse, a mouse pointer appears on the
|
|
Android device, and relative mouse motion, clicks and scrolls are injected.
|
|
|
|
To enable this mode:
|
|
|
|
```bash
|
|
scrcpy --hid-mouse
|
|
scrcpy -M # short version
|
|
```
|
|
|
|
When this mode is enabled, the computer mouse is "captured" (the mouse pointer
|
|
disappears from the computer and appears on the Android device instead).
|
|
|
|
Special capture keys, either <kbd>Alt</kbd> or <kbd>Super</kbd>, toggle
|
|
(disable or enable) the mouse capture. Use one of them to give the control of
|
|
the mouse back to the computer.
|
|
|
|
|
|
## OTG
|
|
|
|
It is possible to run _scrcpy_ with only physical keyboard and mouse simulation
|
|
(HID), as if the computer keyboard and mouse were plugged directly to the device
|
|
via an OTG cable.
|
|
|
|
In this mode, `adb` (USB debugging) is not necessary, and mirroring is disabled.
|
|
|
|
This is similar to `--hid-keyboard --hid-mouse`, but without mirroring.
|
|
|
|
To enable OTG mode:
|
|
|
|
```bash
|
|
scrcpy --otg
|
|
# Pass the serial if several USB devices are available
|
|
scrcpy --otg -s 0123456789abcdef
|
|
```
|
|
|
|
It is possible to enable only HID keyboard or HID mouse:
|
|
|
|
```bash
|
|
scrcpy --otg --hid-keyboard # keyboard only
|
|
scrcpy --otg --hid-mouse # mouse only
|
|
scrcpy --otg --hid-keyboard --hid-mouse # keyboard and mouse
|
|
# for convenience, enable both by default
|
|
scrcpy --otg # keyboard and mouse
|
|
```
|
|
|
|
Like `--hid-keyboard` and `--hid-mouse`, it only works if the device is
|
|
connected over USB.
|
|
|
|
## HID/OTG issues on Windows
|
|
|
|
See [FAQ](/FAQ.md#hidotg-issues-on-windows).
|