Null error with generic usb webcam

[smartynenko]

Op mode crashes on attempt to open generic usb camera

2021-03-05 11:14:48.720 9200-9334/com.qualcomm.ftcrobotcontroller I/RobotCore: ******************** START - OPMODE Concept: Webcam ********************
2021-03-05 11:14:48.724 9200-9341/com.qualcomm.ftcrobotcontroller I/RobotCore: Attempting to switch to op mode Concept: Webcam
2021-03-05 11:14:48.727 9200-9341/com.qualcomm.ftcrobotcontroller V/ThreadPool: container(0x04a4c337: LinearOpMode) added id=692 TID=0 count=1
2021-03-05 11:14:48.728 9200-9372/com.qualcomm.ftcrobotcontroller V/RobotCore: thread: 'LinearOpMode main' starting...
2021-03-05 11:14:48.729 9200-9372/com.qualcomm.ftcrobotcontroller D/CameraManager: doOpenCamera()...
2021-03-05 11:14:48.730 9200-9372/com.qualcomm.ftcrobotcontroller D/CameraManager: requesting permission for camera: Webcam(3141:25442)
2021-03-05 11:14:48.731 9200-9200/com.qualcomm.ftcrobotcontroller W/com.qualcomm.ftcrobotcontroller: type=1400 audit(0.0:184): avc: denied { search } for uid=10158 comm=4C696E6561724F704D6F6465206D61 name="usb" dev="tmpfs" ino=12498 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:usb_device:s0 tclass=dir permissive=0
2021-03-05 11:14:48.737 9200-9372/com.qualcomm.ftcrobotcontroller D/libusb: [41.418505] [0000249c] libusb: debug [op_create] op_create: szUsbPath=/dev/bus/usb/001/004 szSysfsDir=(null)
2021-03-05 11:14:48.737 9200-9372/com.qualcomm.ftcrobotcontroller D/libusb: [41.418638] [0000249c] libusb: debug [initialize_device] initialize_device(szUsbPath=/dev/bus/usb/001/004 szSysfsDir=(null))
2021-03-05 11:14:48.738 9200-9372/com.qualcomm.ftcrobotcontroller E/libusb: [41.418830] [0000249c] libusb: error [initialize_device] initialize_device(): fdDescriptors unavailable
2021-03-05 11:14:48.738 9200-9372/com.qualcomm.ftcrobotcontroller D/libusb: [41.418869] [0000249c] libusb: debug [_originate_err] [linux_usbfs.c:796] originating err: -12(LIBUSB_ERROR_NOT_SUPPORTED)
2021-03-05 11:14:48.738 9200-9372/com.qualcomm.ftcrobotcontroller V/UvcLibUsbDevice: [jni_libusb_device.cpp:169] libusb_get_serial_number: 
2021-03-05 11:14:48.739 9200-9372/com.qualcomm.ftcrobotcontroller D/libusb: [41.420709] [0000249c] libusb: debug [op_create] op_create: szUsbPath=/dev/bus/usb/001/003 szSysfsDir=(null)
2021-03-05 11:14:48.740 9200-9372/com.qualcomm.ftcrobotcontroller D/libusb: [41.420829] [0000249c] libusb: debug [initialize_device] initialize_device(szUsbPath=/dev/bus/usb/001/003 szSysfsDir=(null))
2021-03-05 11:14:48.740 9200-9372/com.qualcomm.ftcrobotcontroller E/libusb: [41.420975] [0000249c] libusb: error [initialize_device] initialize_device(): fdDescriptors unavailable
2021-03-05 11:14:48.740 9200-9372/com.qualcomm.ftcrobotcontroller D/libusb: [41.421015] [0000249c] libusb: debug [_originate_err] [linux_usbfs.c:796] originating err: -12(LIBUSB_ERROR_NOT_SUPPORTED)
2021-03-05 11:14:48.740 9200-9372/com.qualcomm.ftcrobotcontroller V/UvcLibUsbDevice: [jni_libusb_device.cpp:169] libusb_get_serial_number: 
2021-03-05 11:14:48.742 9200-9372/com.qualcomm.ftcrobotcontroller D/WebcamNameImpl: requesting permission for /dev/bus/usb/001/003
2021-03-05 11:14:48.742 9200-9372/com.qualcomm.ftcrobotcontroller V/WebcamNameImpl: asyncRequestUsbPermission()...
2021-03-05 11:14:48.745 9200-9372/com.qualcomm.ftcrobotcontroller D/WebcamNameImpl: permission already available for /dev/bus/usb/001/003
2021-03-05 11:14:48.745 9200-9355/com.qualcomm.ftcrobotcontroller V/Robocol: sending CMD_NOTIFY_INIT_OP_MODE(466), attempt: 0
2021-03-05 11:14:48.746 9200-9372/com.qualcomm.ftcrobotcontroller V/ThreadPool: container(0x0d80be1b: default threadpool) added id=693 TID=0 count=1
2021-03-05 11:14:48.747 9200-9372/com.qualcomm.ftcrobotcontroller V/WebcamNameImpl: ...asyncRequestUsbPermission()
2021-03-05 11:14:48.748 9200-9373/com.qualcomm.ftcrobotcontroller D/WebcamNameImpl: permission for /dev/bus/usb/001/003=true
2021-03-05 11:14:48.748 9200-9372/com.qualcomm.ftcrobotcontroller D/ContinuationSynchronizer: awaiting(camera open)...
2021-03-05 11:14:48.749 9200-9373/com.qualcomm.ftcrobotcontroller D/CameraManager: permission granted for camera: Webcam(3141:25442)
2021-03-05 11:14:48.750 9200-9373/com.qualcomm.ftcrobotcontroller D/CameraManager: asyncOpenCamera(Webcam(3141:25442))...
2021-03-05 11:14:48.752 9200-9373/com.qualcomm.ftcrobotcontroller D/CameraManager: asyncOpenWebcam(Webcam(3141:25442))...
2021-03-05 11:14:48.752 9200-9373/com.qualcomm.ftcrobotcontroller V/UsbResiliantWebcam: construct(0x00b991c2)
2021-03-05 11:14:48.754 9200-9373/com.qualcomm.ftcrobotcontroller D/UsbResiliantWebcam: openAssumingPermission()...
2021-03-05 11:14:48.758 9200-9373/com.qualcomm.ftcrobotcontroller D/UvcContext: usb device is *not* UVC compatible, /dev/bus/usb/001/004
2021-03-05 11:14:48.759 9200-9373/com.qualcomm.ftcrobotcontroller D/UvcContext: found webcam: usbPath=/dev/bus/usb/001/003 vid=3141 pid=25442 serial=null product=USB 2.0 Camera
2021-03-05 11:14:48.759 9200-9373/com.qualcomm.ftcrobotcontroller D/Uvc: [jni_context.cpp:120] Java_org_firstinspires_ftc_robotcore_internal_camera_libuvc_nativeobject_UvcContext_nativeCreateUvcDevice()...
2021-03-05 11:14:48.759 9200-9373/com.qualcomm.ftcrobotcontroller V/Uvc: API: Java_org_firstinspires_ftc_robotcore_internal_camera_libuvc_nativeobject_UvcContext_nativeCreateUvcDevice: enter...
2021-03-05 11:14:48.760 9200-9373/com.qualcomm.ftcrobotcontroller D/libusb: [41.440757] [0000249d] libusb: debug [op_create] op_create: szUsbPath=/dev/bus/usb/001/003 szSysfsDir=(null)
2021-03-05 11:14:48.760 9200-9373/com.qualcomm.ftcrobotcontroller D/libusb: [41.440823] [0000249d] libusb: debug [initialize_device] initialize_device(szUsbPath=/dev/bus/usb/001/003 szSysfsDir=(null))
2021-03-05 11:14:48.760 9200-9373/com.qualcomm.ftcrobotcontroller E/libusb: [41.441260] [0000249d] libusb: error [initialize_device] initialize_device(): fdDescriptors unavailable
2021-03-05 11:14:48.760 9200-9373/com.qualcomm.ftcrobotcontroller D/libusb: [41.441318] [0000249d] libusb: debug [_originate_err] [linux_usbfs.c:796] originating err: -12(LIBUSB_ERROR_NOT_SUPPORTED)
2021-03-05 11:14:48.760 9200-9373/com.qualcomm.ftcrobotcontroller D/Uvc: [device.cpp:613] uvc_create_uvc_device()...