Mar 24, 2023 6:51:40 PM edu.wpi.first.shuffleboard.plugin.cameraserver.source.CameraServerSource lambda$new$5
WARNING: Could not get bandwidth
VideoException [edu.wpi.first.cscore.VideoException: empty value]
at edu.wpi.first.cscore.CameraServerJNI.getTelemetryAverageValue(Native Method)
at edu.wpi.first.cscore.CameraServerJNI.getTelemetryAverageValue(CameraServerJNI.java:364)
at edu.wpi.first.cscore.VideoSource.getActualDataRate(VideoSource.java:334)
at edu.wpi.first.shuffleboard.plugin.cameraserver.source.CameraServerSource.lambda$new$5(CameraServerSource.java:139)
Mar 24, 2023 6:51:40 PM edu.wpi.first.shuffleboard.plugin.cameraserver.source.CameraServerSource lambda$new$5
WARNING: Could not get framerate
VideoException [edu.wpi.first.cscore.VideoException: empty value]
at edu.wpi.first.cscore.CameraServerJNI.getTelemetryAverageValue(Native Method)
at edu.wpi.first.cscore.CameraServerJNI.getTelemetryAverageValue(CameraServerJNI.java:364)
at edu.wpi.first.cscore.VideoSource.getActualFPS(VideoSource.java:321)
at edu.wpi.first.shuffleboard.plugin.cameraserver.source.CameraServerSource.lambda$new$5(CameraServerSource.java:145)
@PeterJohnson Now that I look at the API docs of those cscore methods, I see this warning:
* <p>CameraServerJNI#setTelemetryPeriod() must be called for this to be valid (throws
* VisionException if telemetry is not enabled).
The log here has the following exceptions:
@PeterJohnson Now that I look at the API docs of those cscore methods, I see this warning:
It appears that this might be what's happening here, despite that method being called here, after loading the native libs, when the plugin is loaded: https://github.com/wpilibsuite/shuffleboard/blob/69b2dc2e98c3aa34d5ac3aec6a692467d36db6e2/plugins/cameraserver/src/main/java/edu/wpi/first/shuffleboard/plugin/cameraserver/CameraServerPlugin.java#L57 Is it possible that one second isn't fast enough? What can cause this?
Originally posted by @Starlight220 in https://github.com/wpilibsuite/shuffleboard/issues/773#issuecomment-1486507619