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Add OTG support for Windows #3011

Merged
merged 10 commits into from
Feb 20, 2022
Merged

Add OTG support for Windows #3011

merged 10 commits into from
Feb 20, 2022

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rom1v
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@rom1v rom1v commented Feb 10, 2022 •
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scrcpy v1.22 introduced a new OTG mode. It was based on HID keyboard introduced in v1.20 and HID mouse also introduced in v1.22. It was only supported on Linux.

On Windows, it is not possible to open a USB device if it is already open by another process (like the adb daemon). As a consequence, we can't send HID events if adb is running. Therefore, on Windows, --hid-keyboard and --hid-mouse while mirroring are not possible. These features are still limited to Linux.

However, in OTG mode (--otg), no adb is necessary, so it is possible to open the USB device to send HID events. This PR adds support for --otg on Windows.

Concretely:

  • download the unofficial release below
  • extract it
  • double-click on open_a_terminal_here.bat (extracted from the release)
  • plug an Android device over USB
  • execute scrcpy --otg

Fixes #2773

Here is an unofficial release with this branch, so that you can test and report issues:

Note that on my test computer with Windows 10 64bit, the win32 version does not work due to missing libgcc_s_sjlj-1.dll.
According to stackoverflow, a linker flag -static-libgcc must be added somewhere, but I think it is related to prebuilt libusb dll for win32 (since it works for win64).

EDIT: yes, it's a problem on the libusb prebuilt dll for win32: libusb/libusb#1049

@rom1v rom1v changed the base branch from master to dev February 10, 2022 08:55
This was referenced Feb 10, 2022
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@rom1v rom1v mentioned this pull request Feb 17, 2022
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rom1v added a commit that referenced this pull request Feb 20, 2022
@rom1v
Disable USB features for win32
5169863 
Currently, there is an issue with the libusb prebuilt dll.

Refs #3011 <#3011>
Refs libusb/#1049 <libusb/libusb#1049>
rom1v added 10 commits February 20, 2022 17:38
@rom1v
Report USB device disconnection when detected
be1936b 
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 <#3011>
@rom1v
Remove USB hotplug callback error log
b9b2879 
If it fails, the error is already logged by sc_usb_register_callback().

PR #3011 <#3011>
@rom1v
Avoid PRIx16 printf format on Windows
06243e7 
Convert uint16_t to unsigned to avoid using PRIx16, which may not exist
on Windows.

PR #3011 <#3011>
@rom1v
Fix libusb callback for Windows
ff3cb31 
Add LIBUSB_CALL so that the callback has the correct signature on
Windows (including __attribute__((stdcall))).

PR #3011 <#3011>
@rom1v
Build for Windows with libusb support
6b65cd4 
Fixes #2773 <#2773>
PR #3011 <#3011>
@rom1v
Remove obsolete text in error message
6ee75c0 
The HID/OTG features are now available on all platforms.

PR #3011 <#3011>
@rom1v
Make intr optional for adb commands
3bb24b3 
All adb commands are executed with an "interruptor", so that they can be
interrupted on Ctrl+C.

Make this interruptor optional, so that we could call "adb kill-server"
in OTG mode. This command always returns almost immediately anyway.

Ideally, we should make all blocking calls interruptible (including
libusb calls, by using the asynchronous API), but it's a lot of work,
and in practice it works well enough.

PR #3011 <#3011>
@rom1v
Kill adb daemon in OTG mode on Windows
25296ae 
On Windows, it is not possible to open a USB device from several
process, so HID events may only work if no adb daemon is running.

PR #3011 <#3011>
@rom1v
Forbid HID input without OTG on Windows
73a5311 
On Windows, if the adb daemon is running, opening the USB device will
necessarily fail, so HID input is not possible.

Refs #2773 <#2773>
PR #3011 <#3011>
@rom1v
Disable USB features for win32
d9bc508 
Currently, there is an issue with the libusb prebuilt dll.

Refs libusb/#1049 <libusb/libusb#1049>
PR #3011 <#3011>
@rom1v
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rom1v commented Feb 20, 2022

I disabled the feature for win32 due to this prebuilt dll issue. On Win64, it works as expected. I merge. 🚀

@rom1v rom1v merged commit d9bc508 into dev Feb 20, 2022
@quyleanh
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quyleanh commented Feb 22, 2022 •
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Thank you for your hard work.

Just a minor suggest so I don't want to throw new issue.

Do you have any plan to make a Github Action to build automatically for all platforms? For example when each PR is merged to dev branch, the test build will be built and others can test.

@rom1v
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rom1v commented Feb 22, 2022

There is a PR for GitHub Actions: #1709
But for some reason, gradle check didn't work and had to be removed for the CI.

I spend some time to figure out why, but didn't manage to make it work, then I worked on something else… I should retry (any help is welcome).

@sameerasw
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sameerasw commented Feb 23, 2022 •
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DEBUG: Open USB device 04e8:6860: libusb error: Operation not supported or unimplemented on this platform

any workarounds? Running Android 11 on the device and also compatible with both OTG mouse and kb too. but not in scrcpy?
image

@rom1v
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rom1v commented Feb 23, 2022 •
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Operation not supported or unimplemented on this platform

That might be an error on another USB device (that's why it's logged at debug level).

Is the device detected by adb (when USB debugging is enabled)?

PS: please post console output as text instead of screenshot.

@sameerasw
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Operation not supported or unimplemented on this platform

That might be an error on another USB device (that's why it's logged at debug level).

Is the device detected by adb (when USB debugging is enabled)?

PS: please post console output as text instead of screenshot.

Yes ,everything else works perfectly except just the OTG function and it says no USB devices. even if I connected multiple devices, the new error screen shows this as a USB device... could windows 11 be a problem?

@rom1v rom1v mentioned this pull request Feb 23, 2022
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rom1v commented Feb 23, 2022

@54m33r4 #3050

rom1v added a commit that referenced this pull request Apr 22, 2022
@rom1v
Upgrade libusb (1.0.26) for Windows
d51004e 
Upgrade and enable libusb support for Windows 32-bit builds.

Refs #3011 <#3011>
PR #3206 <#3206>
rom1v added a commit that referenced this pull request Apr 22, 2022
@rom1v
Upgrade libusb (1.0.26) for Windows
4db9753 
Upgrade and enable libusb support for Windows 32-bit builds.

Refs #3011 <#3011>
Fixes #3204 <#3204>
PR #3206 <#3206>
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HID support on Windows
3 participants
@rom1v @quyleanh @sameerasw