UHID does not work the same as OTG #4727

shiumano · 2024-03-05T07:19:29Z

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Environment

OS: Windows, Android (Termux)
scrcpy version: 2.4
installation method: Windows Release, Termux pkg
device model: XQ-DQ44
Android version: 14

Describe the bug

If you try to enter in UHID, you will not be able to use it as a replacement for OTG.

In UHID mode, all mouse buttons except left mouse click are treated as special keys (right click is BACK, middle click is HOME).

Also, if there is no video/audio playback, the program will be forced to exit.

~ $ scrcpy --mouse=uhid --keyboard=uhid --no-video --no-audio
scrcpy 2.4 <https://github.com/Genymobile/scrcpy>
ERROR: No video, no audio, no OTG: nothing to do

The text was updated successfully, but these errors were encountered:

rom1v · 2024-03-05T07:26:54Z

In UHID mode, all mouse buttons except left mouse click are treated as special keys (right click is BACK, middle click is HOME).

Add --forward-all-clicks.

Also, if there is no video/audio playback, the program will be forced to exit.

Yes, the reason why OTG exists is to control the device without using USB debugging (adb) and a server on the device. UHID mode requires all that, so in a sense it behaves like the "normal mode".

But it is true that a mode without mirroring could be added, since in UHID mode the mouse is relative (this is not possible with the default mouse mode, because the mouse is absolute, this would be unusable).

It would require quite a lot of changes to support a control-only mode with UHID though.

EDIT: maybe not so much, I will think about it.

Add the possibility to only control the device with any keyboard and mouse mode without screen mirroring. This is different from OTG mode, which does not require USB debugging at all. It is just the standard mode but with the possibility to disable video playback. By default, always open a window (even without video playback), and add an option --no-window. Fixes #4727 <#4727> Fixes #4793 <#4793>

Add the possibility to only control the device with any keyboard and mouse mode without screen mirroring. This is different from OTG mode, which does not require USB debugging at all. Here, the standard mode is used but with the possibility to disable video playback. By default, always open a window (even without video playback), and add an option --no-window. Fixes #4727 <#4727> Fixes #4793 <#4793>

rom1v · 2024-04-20T16:39:51Z

Please test #4868.

shiumano · 2024-04-22T15:22:37Z

Excellent performance!
Tried it with Termux, very low CPU usage, practical enough.

However, the other issue, the mouse click specification, I still think that all clicks should be forwarded automatically in UHID mode.

rom1v · 2024-04-22T15:48:05Z

Thank you for your test 👍 🎉

However, the other issue, the mouse click specification, I still think that all clicks should be forwarded automatically in UHID mode.

In many cases, it turns out that pressing BACK with the mouse is more useful than a real right click on an Android device.

In the very first public version of scrcpy (2018), all clicks were forwarded. A few days later, in v1.1, I added this commit: 675704c (suggested by a user and independently by a colleague). In practice, I always use BACK with the mouse. So in my opinion, this is a good default.

I understand that there are cases where it is better not to capture right-click for a shortcut, but at least there is an option to disable it (--forward-all-clicks).

EDIT: maybe I missed the most important part: in UHID mode (and AOA)

I agree it makes sense, but then we would need a new option to disable it (it's still useful to press BACK or HOME with the mouse).

Add the possibility to only control the device with any keyboard and mouse mode without screen mirroring. This is different from OTG mode, which does not require USB debugging at all. Here, the standard mode is used but with the possibility to disable video playback. By default, always open a window (even without video playback), and add an option --no-window. Fixes #4727 <#4727> Fixes #4793 <#4793> PR #4868 <#4868>

In relative mouse modes (when the cursor appears on the device), it makes more sense to forward all clicks (disable HOME/BACK shortcuts on secondary clicks). Transform the boolean option --forward-all-clicks into a 3-state option: - --forward-all-clicks=true or --forward-all-clicks: enable - --forward-all-clicks=false: disable - --forward-all-clicks=auto (default): enable only for AOA and UHID That way, by default, all clicks are forwarded with `scrcpy -M`. Refs <#4727 (comment)>

In relative mouse modes (when the cursor appears on the device), it makes more sense to forward all clicks (disable HOME/BACK shortcuts on secondary clicks). Transform the boolean option --forward-all-clicks into a 3-state option: - --forward-all-clicks=true or --forward-all-clicks: enable - --forward-all-clicks=false: disable - --forward-all-clicks=auto (default): enable only for UHID and AOA That way, by default, all clicks are forwarded with `scrcpy -M`. Refs <#4727 (comment)>

rom1v · 2024-04-23T07:59:19Z

@shiumano

I agree it makes sense, but then we would need a new option to disable it

Or we can adapt the --forward-all-clicks option: see PR #4877

Add the possibility to only control the device with any keyboard and mouse mode without screen mirroring: scrcpy -KM --no-video --no-audio This is different from OTG mode, which does not require USB debugging at all. Here, the standard mode is used but with the possibility to disable video playback. By default, always open a window (even without video playback), and add an option --no-window. Fixes #4727 <#4727> Fixes #4793 <#4793> PR #4868 <#4868>

Add the possibility to solely control the device with any keyboard and mouse mode without screen mirroring: scrcpy -KM --no-video --no-audio This is different from OTG mode, which does not require USB debugging at all. Here, the standard mode is used but with the possibility to disable video playback. By default, always open a window (even without video playback), and add an option --no-window. Fixes #4727 <#4727> Fixes #4793 <#4793> PR #4868 <#4868>

In relative mouse modes (when the cursor appears on the device), it makes more sense to forward all clicks (disable HOME/BACK shortcuts on secondary clicks). Transform the boolean option --forward-all-clicks into a 3-state option: - --forward-all-clicks=true or --forward-all-clicks: enable - --forward-all-clicks=false: disable - --forward-all-clicks=auto (default): enable only for UHID and AOA That way, by default, all clicks are forwarded with `scrcpy -M`. Refs <#4727 (comment)> PR #4877 <#4877>

By default, only the left click is forwarded to the device, and secondary clicks trigger shortcuts (the behavior can be configured by --mouse-bind=xxxx). But when the mouse mode is relative (AOA and UHID modes), forward all clicks by default. This makes more sense since the cursor is handled on the device side, the user expects all mouse buttons to be forwarded. Refs #4727 <#4727 (comment)>

By default, only the left click is forwarded to the device, and secondary clicks trigger shortcuts (the behavior can be configured by --mouse-bind=xxxx). But when the mouse mode is relative (AOA and UHID modes), forward all clicks by default. This makes more sense since the cursor is handled on the device side, the user expects all mouse buttons to be forwarded. Refs <#4727 (comment)> PR #5022 <#5022>

Add the possibility to only control the device with any keyboard and mouse mode without screen mirroring: scrcpy -KM --no-video --no-audio This is different from OTG mode, which does not require USB debugging at all. Here, the standard mode is used but with the possibility to disable video playback. By default, always open a window (even without video playback), and add an option --no-window. Fixes #4727 <Genymobile/scrcpy#4727> Fixes #4793 <Genymobile/scrcpy#4793> PR #4868 <Genymobile/scrcpy#4868>

Add the possibility to solely control the device without screen mirroring: scrcpy --no-video --no-audio This is different from OTG mode, which does not require USB debugging at all. Here, the standard mode is used but with the possibility to disable video playback. By default, always open a window (even without video playback), and add an option --no-window. Fixes Genymobile#4727 <Genymobile#4727> Fixes Genymobile#4793 <Genymobile#4793> PR Genymobile#4868 <Genymobile#4868>

By default, only the left click is forwarded to the device, and secondary clicks trigger shortcuts (the behavior can be configured by --mouse-bind=xxxx). But when the mouse mode is relative (AOA and UHID modes), forward all clicks by default. This makes more sense since the cursor is handled on the device side, the user expects all mouse buttons to be forwarded. Refs <Genymobile#4727 (comment)> PR Genymobile#5022 <Genymobile#5022>

Add the possibility to solely control the device without screen mirroring: scrcpy --no-video --no-audio This is different from OTG mode, which does not require USB debugging at all. Here, the standard mode is used but with the possibility to disable video playback. By default, always open a window (even without video playback), and add an option --no-window. Fixes Genymobile#4727 <Genymobile#4727> Fixes Genymobile#4793 <Genymobile#4793> PR Genymobile#4868 <Genymobile#4868>

By default, only the left click is forwarded to the device, and secondary clicks trigger shortcuts (the behavior can be configured by --mouse-bind=xxxx). But when the mouse mode is relative (AOA and UHID modes), forward all clicks by default. This makes more sense since the cursor is handled on the device side, the user expects all mouse buttons to be forwarded. Refs <Genymobile#4727 (comment)> PR Genymobile#5022 <Genymobile#5022>

rom1v mentioned this issue Mar 28, 2024

Wireless OTG mode #4793

Closed

1 task

rom1v mentioned this issue Apr 20, 2024

Add scrcpy window without video playback #4868

Merged

rom1v mentioned this issue Apr 23, 2024

Forward all clicks by default for UHID and AOA #4877

Closed

rom1v mentioned this issue Apr 28, 2024

Input only via tcpip #4891

Closed

rom1v mentioned this issue Jun 24, 2024

Add option to configure mouse bindings #5022

Merged

rom1v closed this as completed in 45fe6b6 Jun 29, 2024

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UHID does not work the same as OTG #4727

UHID does not work the same as OTG #4727

shiumano commented Mar 5, 2024

rom1v commented Mar 5, 2024 •

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rom1v commented Apr 23, 2024

UHID does not work the same as OTG #4727

UHID does not work the same as OTG #4727

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