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saki4510t / UVCCamera

library and sample to access to UVC web camera on non-rooted Android device
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Can not open camera #427

Open ivan-ushakov opened 5 years ago

ivan-ushakov commented 5 years ago

I'm trying to use library on TV with Android 4.4 and with master branch I have this error

D/UsbDeviceConnectionJNI( 1227): close
I/USBMonitor( 1227): name=/dev/bus/usb/003/003,desc=58,busnum=3,devnum=3,rawDesc=[B@41f7bff0
V/CameraThread( 1227): handleOpen:
V/CameraThread( 1227): handleClose:
V/UVCCameraTextureView( 1227): setVideoEncoder:
V/UVCCameraTextureView( 1227): RenderThread#setEncoder:encoder=null
D/UVCCamera( 1227): [1241*UVCCamera.cpp:69:UVCCamera]:begin
D/UVCCamera( 1227): [1241*UVCCamera.cpp:71:UVCCamera]:end
D/UsbDeviceConnectionJNI( 1227): close
D/UVCCamera( 1227): [1241*UVCCamera.cpp:138:connect]:begin
D/libusb/core( 1227): [1241*core.c:2040:libusb_init2]:begin
I/libusb/core( 1227): [1241*core.c:2085:libusb_init2]:libusb v1.0.19.10903
D/libusb/core( 1227): [1241*core.c:2108:libusb_init2]:call usbi_backend->init2
I/libusb/usbfs( 1227): [1241*android_usbfs.c:504:op_init2]:start up hotplug event handler
I/libusb/usbfs( 1227): [1241*android_usbfs.c:512:op_init2]:call android_scan_devices
D/libusb/core( 1227): [1241*core.c:2138:libusb_init2]:end (0)
D/libusb/core( 1227): [1241*core.c:1252:libusb_get_device_with_fd]:begin
D/libusb/core( 1227): [1241*core.c:1262:libusb_get_device_with_fd]:end
D/libusb  ( 1227): [libusb_open] open (bus/addr)=(3.3)
D/libusb  ( 1227): [op_open] getcap not available
D/libusb  ( 1227): [usbi_add_pollfd] add fd 66 events 4
D/libusb  ( 1227): [libusb_get_config_descriptor] index 0
E/libusb  ( 1227): [parse_interface] invalid extra intf desc len (0)
E/libusb  ( 1227): [raw_desc_to_config] parse_configuration failed with error -1
D/libusb/core( 1227): [1241*core.c:1995:libusb_set_auto_detach_kernel_driver]:begin
D/libusb/core( 1227): [1241*core.c:1997:libusb_set_auto_detach_kernel_driver]:enable=0
D/libusb/core( 1227): [1241*core.c:2004:libusb_set_auto_detach_kernel_driver]:end (0)
D/libusb  ( 1227): [libusb_close]
D/libusb  ( 1227): [usbi_remove_pollfd] remove fd 66
E/UVCCamera( 1227): [1241*UVCCamera.cpp:172:connect]:could not open camera:err=-1
D/UVCCamera( 1227): [1241*UVCCamera.cpp:187:connect]:end (-1)

I see that problem happens while parsing interface but I don't know how to debug this.

Windwoes commented 5 years ago

I'm having the same error with a Logitech C920 and Android 7.1.2

Windwoes commented 5 years ago

Update: I was able to fix it by uncommenting a line in Android.mk as described here: https://github.com/saki4510t/UVCCamera/issues/181

ghost commented 5 years ago

try to enable OTG connection and then try

savet-save commented 1 year ago

that solved my problem https://github.com/saki4510t/UVCCamera/issues/181#issuecomment-316976281