Logitech C922 not working properly on WSL2

[ginobroccoli]

Hi,

I'm encountering issues while using the SarXos webcam-capture library on Linux (WSL2) with a Logitech C922 camera. The setup works fine on macOS, but I'm facing errors on Linux. Here are the details of my environment and the problems I've encountered:

Starting capture on device 0 (C922 Pro Stream Webcam) with format YUYV
thread '<unnamed>' panicked at /home/eduardo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/nokhwa-bindings-linux-0.1.1/src/lib.rs:193:13:
assertion `left == right` failed: Device list should not contain duplicate indexes
  left: 0
 right: 2
stack backtrace:
   0:     0x7f35853556bc - <unknown>
   1:     0x7f35852798eb - <unknown>
   2:     0x7f358532e4a2 - <unknown>
   3:     0x7f358535a298 - <unknown>
   4:     0x7f358535b14d - <unknown>
   5:     0x7f358535ac35 - <unknown>
   6:     0x7f358535ab99 - <unknown>
   7:     0x7f358535ab84 - <unknown>
   8:     0x7f3585267432 - <unknown>
   9:     0x7f358526768d - <unknown>
  10:     0x7f3585268061 - <unknown>
  11:     0x7f358530e42d - <unknown>
  12:     0x7f3585308e22 - <unknown>
  13:     0x7f3585270d9d - <unknown>
  14:     0x7f3585616052 - <unknown>
  15:     0x7f35856151cc - <unknown>
  16:     0x7f3585615508 - <unknown>
  17:     0x7f358560aa5a - <unknown>
  18:     0x7f358560af81 - <unknown>
  19:     0x7f35e879c21c - <unknown>
thread '<unnamed>' panicked at core/src/panicking.rs:221:5:
panic in a function that cannot unwind
stack backtrace:
   0:     0x7f35853556bc - <unknown>
   1:     0x7f35852798eb - <unknown>
   2:     0x7f358532e4a2 - <unknown>
   3:     0x7f358535a298 - <unknown>
   4:     0x7f358535b14d - <unknown>
   5:     0x7f358535ac02 - <unknown>
   6:     0x7f358535ab99 - <unknown>
   7:     0x7f358535ab84 - <unknown>
   8:     0x7f35852678d4 - <unknown>
   9:     0x7f358526793c - <unknown>
  10:     0x7f35852678e9 - <unknown>
  11:     0x7f3585272546 - <unknown>
  12:     0x7f3585616052 - <unknown>
  13:     0x7f35856151cc - <unknown>
  14:     0x7f3585615508 - <unknown>
  15:     0x7f358560aa5a - <unknown>
  16:     0x7f358560af81 - <unknown>
  17:     0x7f35e879c21c - <unknown>
thread caused non-unwinding panic. aborting.

When I try to remove /dev/video1 to avoid duplicate indexes, I get a different error:

java.lang.IllegalArgumentException: capacity < 0: (-1080 < 0)
      at java.base/java.nio.Buffer.createCapacityException(Buffer.java:290)
      at java.base/java.nio.Buffer.<init>(Buffer.java:253)
      at java.base/java.nio.ByteBuffer.<init>(ByteBuffer.java:316)
      at java.base/java.nio.ByteBuffer.<init>(ByteBuffer.java:324)
      at java.base/java.nio.MappedByteBuffer.<init>(MappedByteBuffer.java:113)
      at java.base/java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:107)
      at java.base/java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:360)
      at com.github.eduramiba.webcamcapture.drivers.nokhwa.NokhwaVideoDevice.updateBuffer(NokhwaVideoDevice.java:260)
      at com.github.eduramiba.webcamcapture.drivers.nokhwa.NokhwaVideoDevice.getImage(NokhwaVideoDevice.java:211)
      at com.github.eduramiba.webcamcapture.drivers.nokhwa.NokhwaVideoDevice.getImage(NokhwaVideoDevice.java:102)
      at com.github.sarxos.webcam.ds.cgt.WebcamGetImageTask.handle(WebcamGetImageTask.java:43)
      at com.github.sarxos.webcam.WebcamTask.process(WebcamTask.java:48)
      at com.github.sarxos.webcam.ds.cgt.WebcamGetImageTask.getImage(WebcamGetImageTask.java:26)
      at com.github.sarxos.webcam.Webcam.getImage(Webcam.java:661)

I've tried looking up existing issues both here and in the original nokhwa repo, but found only this somewhat related issue

Please let me know if you need any additional information to help resolve this issue. Thank you for your time and assistance!

[ginobroccoli]

Update: WSL is not related - same issue happens on alpine as well. The single image capture works, but the motion detection throws the error. Seems to be related to lib-cnokhwa

[eduramiba]

Thanks for the report. I am waiting on 0.11 release to probably have this fixed: l1npengtul/nokhwa#86 (comment)