[darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access

來自github上的討論，But is not my problem.

 

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MacOS Monterey 12.0, libuvc, libusb: info [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access #972

 

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hl0521 opened this issue on Aug 4 · 23 comments

 

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MacOS Monterey 12.0, libuvc, libusb: info [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access #972

hl0521 opened this issue on Aug 4 · 23 comments

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hl0521 commented on Aug 4 •

 

When using the function "uvc_open" in libuvc on MacOS Monterey 12.0, the following exception will be thrown:

libusb: info [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access.

Does anyone know how to solve this problem？

The complete log is as follows：

[device.c:322] begin uvc_open
[ 0.706899] [00018c33] libusb: debug [libusb_open] open 20.6
[ 0.707071] [00018c33] libusb: debug [darwin_open] device open for access
[device.c:325/uvc_open] libusb_open() = 0
[device.c:345] begin uvc_open_internal
[device.c:892] begin uvc_ref_device
[device.c:897] end uvc_ref_device
[device.c:430] begin uvc_get_device_info
[ 0.707100] [00018c33] libusb: debug [libusb_get_config_descriptor] index 0
[ 0.707105] [00018c33] libusb: debug [parse_configuration] skipping descriptor 0xb
[ 0.707109] [00018c33] libusb: debug [parse_endpoint] skipping descriptor 0x25
[ 0.707112] [00018c33] libusb: debug [parse_endpoint] skipping descriptor 0xb
[ 0.707115] [00018c33] libusb: debug [parse_endpoint] skipping descriptor 0x25
[device.c:1009] begin uvc_scan_control
[device.c:552] begin uvc_get_device_descriptor
[ 0.707124] [00018c33] libusb: debug [libusb_get_device_descriptor]  
[ 0.707126] [00018c33] libusb: debug [libusb_open] open 20.6
[ 0.707160] [00018c33] libusb: debug [darwin_open] device open for access
[ 0.707165] [00018c33] libusb: debug [libusb_submit_transfer] transfer 0x7fb688c3dbf8
[ 0.707361] [00018c33] libusb: debug [libusb_get_next_timeout] no URB with timeout or all handled by OS; no timeout!
[ 0.707368] [00018c33] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 0.707371] [00018c33] libusb: debug [handle_events] event sources modified, reallocating event data
[ 0.707376] [00018c33] libusb: debug [usbi_wait_for_events] poll() 1 fds with timeout in 60000ms
[ 0.707522] [00018c32] libusb: debug [darwin_async_io_callback] an async io operation has completed
[ 0.707546] [00018c33] libusb: debug [usbi_wait_for_events] poll() returned 1
[ 0.707549] [00018c33] libusb: debug [handle_event_trigger] event triggered
[ 0.707551] [00018c33] libusb: debug [darwin_handle_transfer_completion] handling transfer completion type control with kernel status 0
[ 0.707554] [00018c33] libusb: debug [usbi_handle_transfer_completion] transfer 0x7fb688c3dbf8 has callback 0x100dfafb0
[ 0.707556] [00018c33] libusb: debug [sync_transfer_cb] actual_length=4
[ 0.707559] [00018c33] libusb: debug [libusb_free_transfer] transfer 0x7fb688c3dbf8
[ 0.707564] [00018c33] libusb: debug [libusb_submit_transfer] transfer 0x7fb688e42a08
[ 0.707586] [00018c33] libusb: debug [libusb_get_next_timeout] no URB with timeout or all handled by OS; no timeout!
[ 0.707589] [00018c33] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 0.707591] [00018c33] libusb: debug [usbi_wait_for_events] poll() 1 fds with timeout in 60000ms
[ 0.707602] [00018c32] libusb: debug [darwin_async_io_callback] an async io operation has completed
[ 0.707613] [00018c33] libusb: debug [usbi_wait_for_events] poll() returned 1
[ 0.707615] [00018c33] libusb: debug [handle_event_trigger] event triggered
[ 0.707617] [00018c33] libusb: debug [darwin_handle_transfer_completion] handling transfer completion type control with kernel status 0
[ 0.707619] [00018c33] libusb: debug [usbi_handle_transfer_completion] transfer 0x7fb688e42a08 has callback 0x100dfafb0
[ 0.707621] [00018c33] libusb: debug [sync_transfer_cb] actual_length=40
[ 0.707624] [00018c33] libusb: debug [libusb_free_transfer] transfer 0x7fb688e42a08
[ 0.707628] [00018c33] libusb: debug [libusb_submit_transfer] transfer 0x7fb688e42a08
[ 0.707660] [00018c33] libusb: debug [libusb_get_next_timeout] no URB with timeout or all handled by OS; no timeout!
[ 0.707663] [00018c33] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 0.707665] [00018c33] libusb: debug [usbi_wait_for_events] poll() 1 fds with timeout in 60000ms
[ 0.707799] [00018c32] libusb: debug [darwin_async_io_callback] an async io operation has completed
[ 0.707821] [00018c33] libusb: debug [usbi_wait_for_events] poll() returned 1
[ 0.707825] [00018c33] libusb: debug [handle_event_trigger] event triggered
[ 0.707826] [00018c33] libusb: debug [darwin_handle_transfer_completion] handling transfer completion type control with kernel status 0
[ 0.707829] [00018c33] libusb: debug [usbi_handle_transfer_completion] transfer 0x7fb688e42a08 has callback 0x100dfafb0
[ 0.707831] [00018c33] libusb: debug [sync_transfer_cb] actual_length=4
[ 0.707836] [00018c33] libusb: debug [libusb_free_transfer] transfer 0x7fb688e42a08
[ 0.707840] [00018c33] libusb: debug [libusb_submit_transfer] transfer 0x7fb68a882298
[ 0.707867] [00018c33] libusb: debug [libusb_get_next_timeout] no URB with timeout or all handled by OS; no timeout!
[ 0.707870] [00018c33] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 0.707872] [00018c33] libusb: debug [usbi_wait_for_events] poll() 1 fds with timeout in 60000ms
[ 0.707883] [00018c32] libusb: debug [darwin_async_io_callback] an async io operation has completed
[ 0.707894] [00018c33] libusb: debug [usbi_wait_for_events] poll() returned 1
[ 0.707896] [00018c33] libusb: debug [handle_event_trigger] event triggered
[ 0.707898] [00018c33] libusb: debug [darwin_handle_transfer_completion] handling transfer completion type control with kernel status 0
[ 0.707900] [00018c33] libusb: debug [usbi_handle_transfer_completion] transfer 0x7fb68a882298 has callback 0x100dfafb0
[ 0.707902] [00018c33] libusb: debug [sync_transfer_cb] actual_length=24
[ 0.707905] [00018c33] libusb: debug [libusb_free_transfer] transfer 0x7fb68a882298
[ 0.707909] [00018c33] libusb: debug [libusb_close]  
[device.c:594] end uvc_get_device_descriptor (0)
[device.c:606] begin uvc_free_device_descriptor
[device.c:619] end uvc_free_device_descriptor
[device.c:1232] begin uvc_parse_vc
[device.c:1075] begin uvc_parse_vc_header
[device.c:1280] begin uvc_scan_streaming
[device.c:1595] begin uvc_parse_vs
[device.c:1317] begin uvc_parse_vs_input_header
[device.c:1323] end uvc_parse_vs_input_header (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1394] begin uvc_parse_vs_format_mjpeg
[device.c:1412] end uvc_parse_vs_format_mjpeg (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1334] begin uvc_parse_vs_format_uncompressed
[device.c:1353] end uvc_parse_vs_format_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1364] begin uvc_parse_vs_frame_format
[device.c:1383] end uvc_parse_vs_frame_format (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1429] begin uvc_parse_vs_frame_frame
[device.c:1464] end uvc_parse_vs_frame_frame (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1429] begin uvc_parse_vs_frame_frame
[device.c:1464] end uvc_parse_vs_frame_frame (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1429] begin uvc_parse_vs_frame_frame
[device.c:1464] end uvc_parse_vs_frame_frame (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1429] begin uvc_parse_vs_frame_frame
[device.c:1464] end uvc_parse_vs_frame_frame (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1627/uvc_parse_vs] unsupported descriptor subtype VS_COLORFORMAT
[device.c:1644] end uvc_parse_vs (0)
[device.c:1306] end uvc_scan_streaming (0)
[device.c:1107] end uvc_parse_vc_header (0)
[device.c:1263] end uvc_parse_vc (0)
[device.c:1232] begin uvc_parse_vc
[device.c:1121] begin uvc_parse_vc_input_terminal
[device.c:1142] end uvc_parse_vc_input_terminal (0)
[device.c:1263] end uvc_parse_vc (0)
[device.c:1232] begin uvc_parse_vc
[device.c:1156] begin uvc_parse_vc_processing_unit
[device.c:1167] end uvc_parse_vc_processing_unit (0)
[device.c:1263] end uvc_parse_vc (0)
[device.c:1232] begin uvc_parse_vc
[device.c:1203] begin uvc_parse_vc_extension_unit
[device.c:1217] end uvc_parse_vc_extension_unit (0)
[device.c:1263] end uvc_parse_vc (0)
[device.c:1232] begin uvc_parse_vc
[device.c:1203] begin uvc_parse_vc_extension_unit
[device.c:1217] end uvc_parse_vc_extension_unit (0)
[device.c:1263] end uvc_parse_vc (0)
[device.c:1232] begin uvc_parse_vc
[device.c:1263] end uvc_parse_vc (0)
[device.c:1061] end uvc_scan_control (0)
[device.c:455] end uvc_get_device_info (0)
[device.c:358/uvc_open_internal] claiming control interface 0
[device.c:929] begin uvc_claim_if
[ 0.708100] [00018c33] libusb: debug [libusb_detach_kernel_driver] interface 0
[ 0.708103] [00018c33] libusb: debug [darwin_detach_kernel_driver] attempting to detach kernel driver from device
[ 0.708239] [00018c33] libusb: info [darwin_detach_kernel_driver] no capture entitlements. can not detach the kernel driver for this device
[device.c:942/uvc_claim_if] claiming interface 0
[ 0.708245] [00018c33] libusb: debug [libusb_claim_interface] interface 0
[ 0.708766] [00018c33] libusb: info [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access
[device.c:951] end uvc_claim_if (-3)
[device.c:965] begin uvc_release_if
[device.c:966/uvc_release_if] releasing interface 0
[device.c:968/uvc_release_if] attempt to release unclaimed interface 0

[device.c:969] end uvc_release_if (0)
[ 0.708784] [00018c33] libusb: debug [libusb_close]  
[device.c:908] begin uvc_unref_device
[device.c:916] end uvc_unref_device
[device.c:1653] begin uvc_free_devh
[device.c:477] begin uvc_free_device_info
[device.c:530] end uvc_free_device_info
[device.c:1663] end uvc_free_devh
[device.c:411] end uvc_open_internal (-3)
[device.c:333] end uvc_open (-3)

 

 

 

mcuee added the macOS label on Aug 5

 

 

Member

mcuee commented on Aug 5

That is just a info message and not a problem.
[ 0.708766] [00018c33] libusb: info [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access

 

 

 

Member

mcuee commented on Aug 5

Do you have real problem here other than the message?

 

 

 

Member

mcuee commented on Aug 5

Reference: we have downgraded the message from warning to info as it is normal.
#955

 

 

 

Author

hl0521 commented on Aug 5

Do you have real problem here other than the message?

My program use the libuvc (https://github.com/libuvc/libuvc) to control the webcam. The program can work on macOS 10.x and macOS 11.x. It doesn't work on macOS 12.0 that is Apple's new system released recently. The cause is that the function "uvc_open" failed. Function "uvc_open" works as follows:

uvc_open
->uvc_open_internal
->uvc_claim_if
->libusb_claim_interface
->usbi_backend.claim_interface ==> darwin_capture_claim_interface
->darwin_claim_interface
->USBInterfaceOpen ---------->return "USBInterfaceOpen: another process has device opened for exclusive access"

Maybe this problem is caused by some changes in Apple’s new system, i'm not sure. And I don't know how to solve this problem, so come here for help.

 

 

 

Member

mcuee commented on Aug 5

Can you try the latest libusb git? And post the debug log again.

 

 

 

Author

hl0521 commented on Aug 5

Can you try the latest libusb git? And post the debug log again.

I updated the latest code from the libusb yesterday and got the above log.

The log starts with [device.c:322] begin uvc_open
ends with [device.c:333] end uvc_open (-3)

 

 

 

Member

mcuee commented on Aug 5

I see. Thanks. Maybe there is a change on the Apple side. Anyway, this is a beta release. You may want to try again when there is a formal release.

Right now please post the debug log for macOS 11.x as well since you say it works. By comparing the logs, you may be able to identify the differences. It could be that there is a kernel driver in the 12.x beta which opens the device for exclusive access.

One thing you can try is to see if you can use the latest addition to the macOS side, the kernel driver detaching function, but you need to have the right entitlement. I have not tried this myself. More details are in pull request #911

 

 

 

Author

hl0521 commented on Aug 5 •

 

I see. Thanks. Maybe there is a change on the Apple side. Anyway, this is a beta release. You may want to try again when there is a formal release.

Right now please post the debug log for macOS 11.x as well since you say it works. By comparing the logs, you may be able to identify the differences. It could be that there is a kernel driver in the 12.x beta which opens the device for exclusive access.

One thing you can try is to see if you can use the latest addition to the macOS side, the kernel driver detaching function, but you need to have the right entitlement. I have not tried this myself. More details are in pull request #911

On macOS 11.4, the log as follows:

[device.c:322] begin uvc_open
[ 7.424639] [0014a84b] libusb: debug [libusb_open] open 20.10
[ 7.424768] [0014a84b] libusb: debug [darwin_open] device open for access
[device.c:325/uvc_open] libusb_open() = 0
[device.c:345] begin uvc_open_internal
[device.c:892] begin uvc_ref_device
[device.c:897] end uvc_ref_device
[device.c:430] begin uvc_get_device_info
[ 7.424779] [0014a84b] libusb: debug [libusb_get_config_descriptor] index 0
[ 7.424783] [0014a84b] libusb: debug [parse_configuration] skipping descriptor 0xb
[ 7.424785] [0014a84b] libusb: debug [parse_endpoint] skipping descriptor 0x25
[ 7.424788] [0014a84b] libusb: debug [parse_endpoint] skipping descriptor 0xb
[ 7.424791] [0014a84b] libusb: debug [parse_endpoint] skipping descriptor 0x25
[device.c:1009] begin uvc_scan_control
[device.c:552] begin uvc_get_device_descriptor
[ 7.425724] [0014a84b] libusb: debug [libusb_get_device_descriptor]  
[ 7.425735] [0014a84b] libusb: debug [libusb_open] open 20.10
[ 7.425789] [0014a84b] libusb: debug [darwin_open] device open for access
[ 7.425829] [0014a84b] libusb: debug [libusb_submit_transfer] transfer 0x7fcd2a56fd68
[ 7.425948] [0014a84b] libusb: debug [libusb_get_next_timeout] no URB with timeout or all handled by OS; no timeout!
[ 7.425973] [0014a84b] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 7.425977] [0014a84b] libusb: debug [handle_events] event sources modified, reallocating event data
[ 7.425992] [0014a84b] libusb: debug [usbi_wait_for_events] poll() 1 fds with timeout in 60000ms
[ 7.426368] [0014a84b] libusb: debug [usbi_wait_for_events] poll() returned 1
[ 7.426375] [0014a84b] libusb: debug [handle_event_trigger] event triggered
[ 7.426378] [0014a84b] libusb: debug [handle_event_trigger] hotplug message received
[ 7.426414] [0014a84b] libusb: debug [libusb_unref_device] destroy device 20.6
[ 7.426423] [0014a84b] libusb: debug [libusb_unref_device] destroy device 20.5
[ 7.426446] [0014a84b] libusb: debug [libusb_get_next_timeout] no URB with timeout or all handled by OS; no timeout!
[ 7.426457] [0014a84b] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 7.426464] [0014a84b] libusb: debug [usbi_wait_for_events] poll() 1 fds with timeout in 60000ms
[ 7.427444] [0014a840] libusb: debug [darwin_async_io_callback] an async io operation has completed
[ 7.428181] [0014a84b] libusb: debug [usbi_wait_for_events] poll() returned 1
[ 7.428194] [0014a84b] libusb: debug [handle_event_trigger] event triggered
[ 7.428564] [0014a84b] libusb: debug [darwin_handle_transfer_completion] handling transfer completion type control with kernel status 0
[ 7.428570] [0014a84b] libusb: debug [usbi_handle_transfer_completion] transfer 0x7fcd2a56fd68 has callback 0x1088976e0
[ 7.428574] [0014a84b] libusb: debug [sync_transfer_cb] actual_length=4
[ 7.428581] [0014a84b] libusb: debug [libusb_free_transfer] transfer 0x7fcd2a56fd68
[ 7.428588] [0014a84b] libusb: debug [libusb_submit_transfer] transfer 0x7fcd2aca5b88
[ 7.428648] [0014a84b] libusb: debug [libusb_get_next_timeout] no URB with timeout or all handled by OS; no timeout!
[ 7.428653] [0014a84b] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 7.428656] [0014a84b] libusb: debug [usbi_wait_for_events] poll() 1 fds with timeout in 60000ms
[ 7.428932] [0014a840] libusb: debug [darwin_async_io_callback] an async io operation has completed
[ 7.428962] [0014a84b] libusb: debug [usbi_wait_for_events] poll() returned 1
[ 7.428969] [0014a84b] libusb: debug [handle_event_trigger] event triggered
[ 7.428971] [0014a84b] libusb: debug [darwin_handle_transfer_completion] handling transfer completion type control with kernel status 0
[ 7.428974] [0014a84b] libusb: debug [usbi_handle_transfer_completion] transfer 0x7fcd2aca5b88 has callback 0x1088976e0
[ 7.428977] [0014a84b] libusb: debug [sync_transfer_cb] actual_length=40
[ 7.428981] [0014a84b] libusb: debug [libusb_free_transfer] transfer 0x7fcd2aca5b88
[ 7.429000] [0014a84b] libusb: debug [libusb_submit_transfer] transfer 0x7fcd277bbdd8
[ 7.429078] [0014a84b] libusb: debug [libusb_get_next_timeout] no URB with timeout or all handled by OS; no timeout!
[ 7.429083] [0014a84b] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 7.429087] [0014a84b] libusb: debug [usbi_wait_for_events] poll() 1 fds with timeout in 60000ms
[ 7.429369] [0014a840] libusb: debug [darwin_async_io_callback] an async io operation has completed
[ 7.429568] [0014a84b] libusb: debug [usbi_wait_for_events] poll() returned 1
[ 7.429715] [0014a84b] libusb: debug [handle_event_trigger] event triggered
[ 7.429720] [0014a84b] libusb: debug [darwin_handle_transfer_completion] handling transfer completion type control with kernel status 0
[ 7.429724] [0014a84b] libusb: debug [usbi_handle_transfer_completion] transfer 0x7fcd277bbdd8 has callback 0x1088976e0
[ 7.429727] [0014a84b] libusb: debug [sync_transfer_cb] actual_length=4
[ 7.429731] [0014a84b] libusb: debug [libusb_free_transfer] transfer 0x7fcd277bbdd8
[ 7.429738] [0014a84b] libusb: debug [libusb_submit_transfer] transfer 0x7fcd2b91e5f8
[ 7.429781] [0014a84b] libusb: debug [libusb_get_next_timeout] no URB with timeout or all handled by OS; no timeout!
[ 7.429786] [0014a84b] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 7.429788] [0014a84b] libusb: debug [usbi_wait_for_events] poll() 1 fds with timeout in 60000ms
[ 7.429859] [0014a840] libusb: debug [darwin_async_io_callback] an async io operation has completed
[ 7.429984] [0014a84b] libusb: debug [usbi_wait_for_events] poll() returned 1
[ 7.429991] [0014a84b] libusb: debug [handle_event_trigger] event triggered
[ 7.429993] [0014a84b] libusb: debug [darwin_handle_transfer_completion] handling transfer completion type control with kernel status 0
[ 7.429997] [0014a84b] libusb: debug [usbi_handle_transfer_completion] transfer 0x7fcd2b91e5f8 has callback 0x1088976e0
[ 7.429999] [0014a84b] libusb: debug [sync_transfer_cb] actual_length=24
[ 7.430003] [0014a84b] libusb: debug [libusb_free_transfer] transfer 0x7fcd2b91e5f8
[ 7.430008] [0014a84b] libusb: debug [libusb_close]  
[device.c:594] end uvc_get_device_descriptor (0)
[device.c:606] begin uvc_free_device_descriptor
[device.c:619] end uvc_free_device_descriptor
[device.c:1232] begin uvc_parse_vc
[device.c:1075] begin uvc_parse_vc_header
[device.c:1280] begin uvc_scan_streaming
[device.c:1595] begin uvc_parse_vs
[device.c:1317] begin uvc_parse_vs_input_header
[device.c:1323] end uvc_parse_vs_input_header (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1394] begin uvc_parse_vs_format_mjpeg
[device.c:1412] end uvc_parse_vs_format_mjpeg (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1334] begin uvc_parse_vs_format_uncompressed
[device.c:1353] end uvc_parse_vs_format_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1481] begin uvc_parse_vs_frame_uncompressed
[device.c:1516] end uvc_parse_vs_frame_uncompressed (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1364] begin uvc_parse_vs_frame_format
[device.c:1383] end uvc_parse_vs_frame_format (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1429] begin uvc_parse_vs_frame_frame
[device.c:1464] end uvc_parse_vs_frame_frame (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1429] begin uvc_parse_vs_frame_frame
[device.c:1464] end uvc_parse_vs_frame_frame (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1429] begin uvc_parse_vs_frame_frame
[device.c:1464] end uvc_parse_vs_frame_frame (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1429] begin uvc_parse_vs_frame_frame
[device.c:1464] end uvc_parse_vs_frame_frame (0)
[device.c:1644] end uvc_parse_vs (0)
[device.c:1595] begin uvc_parse_vs
[device.c:1627/uvc_parse_vs] unsupported descriptor subtype VS_COLORFORMAT
[device.c:1644] end uvc_parse_vs (0)
[device.c:1306] end uvc_scan_streaming (0)
[device.c:1107] end uvc_parse_vc_header (0)
[device.c:1263] end uvc_parse_vc (0)
[device.c:1232] begin uvc_parse_vc
[device.c:1121] begin uvc_parse_vc_input_terminal
[device.c:1142] end uvc_parse_vc_input_terminal (0)
[device.c:1263] end uvc_parse_vc (0)
[device.c:1232] begin uvc_parse_vc
[device.c:1156] begin uvc_parse_vc_processing_unit
[device.c:1167] end uvc_parse_vc_processing_unit (0)
[device.c:1263] end uvc_parse_vc (0)
[device.c:1232] begin uvc_parse_vc
[device.c:1203] begin uvc_parse_vc_extension_unit
[device.c:1217] end uvc_parse_vc_extension_unit (0)
[device.c:1263] end uvc_parse_vc (0)
[device.c:1232] begin uvc_parse_vc
[device.c:1203] begin uvc_parse_vc_extension_unit
[device.c:1217] end uvc_parse_vc_extension_unit (0)
[device.c:1263] end uvc_parse_vc (0)
[device.c:1232] begin uvc_parse_vc
[device.c:1263] end uvc_parse_vc (0)
[device.c:1061] end uvc_scan_control (0)
[device.c:455] end uvc_get_device_info (0)
[device.c:358/uvc_open_internal] claiming control interface 0
[device.c:929] begin uvc_claim_if
[ 7.430447] [0014a84b] libusb: debug [libusb_detach_kernel_driver] interface 0
[ 7.430451] [0014a84b] libusb: debug [darwin_detach_kernel_driver] attempting to detach kernel driver from device
[ 7.430479] [0014a84b] libusb: info [darwin_detach_kernel_driver] no capture entitlements. can not detach the kernel driver for this device
[device.c:942/uvc_claim_if] claiming interface 0
[ 7.430490] [0014a84b] libusb: debug [libusb_claim_interface] interface 0
[ 7.432406] [0014a84b] libusb: debug [get_endpoints] building table of endpoints.
[ 7.433185] [0014a84b] libusb: debug [get_endpoints] interface: 0 pipe 1: dir: 1 number: 4
[ 7.433247] [0014a84b] libusb: debug [darwin_claim_interface] interface opened
[device.c:951] end uvc_claim_if (0)
[ 7.433260] [0014a84b] libusb: debug [libusb_get_device_descriptor]  
[ 7.433264] [0014a84b] libusb: debug [libusb_submit_transfer] transfer 0x7fcd2aca2978
[ 7.433269] [0014a84b] libusb: debug [ep_to_pipeRef] converting ep address 0x84 to pipeRef and interface
[ 7.433272] [0014a84b] libusb: debug [ep_to_pipeRef] pipe 1 on interface 0 matches
[device.c:382/uvc_open_internal] libusb_submit_transfer() = 0
[device.c:399] end uvc_open_internal (0)
[device.c:333] end uvc_open (0)

 

 

 

 

Member

mcuee commented on Aug 5 •

 

Main difference:
macOS 11.x

[device.c:942/uvc_claim_if] claiming interface 0
[ 7.430490] [0014a84b] libusb: debug [libusb_claim_interface] interface 0
[ 7.432406] [0014a84b] libusb: debug [get_endpoints] building table of endpoints.
[ 7.433185] [0014a84b] libusb: debug [get_endpoints] interface: 0 pipe 1: dir: 1 number: 4
[ 7.433247] [0014a84b] libusb: debug [darwin_claim_interface] interface opened

macOS 12 beta: claiming interface failed. So there is a kernel driver (or maybe system application) which opened the device for exclusive access. You may have to contact Apple for help.

[device.c:942/uvc_claim_if] claiming interface 0
[ 0.708245] [00018c33] libusb: debug [libusb_claim_interface] interface 0
[ 0.708766] [00018c33] libusb: info [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access
[device.c:951] end uvc_claim_if (-3)

 

 

 

 

mcuee mentioned this issue on Aug 6

libuvc didn't work on the macos12 libuvc/libuvc#188

 

Open

 

 

Member

hjelmn commented on Aug 8

Think I know how I broke it. Fixing now....

 

 

 

Member

hjelmn commented on Aug 8

Opps. Wrong bug :).

 

 

 

Member

mcuee commented on Aug 8

@hl0521 You may want to give latest git a try again (to run with sudo) under macOS 12 beta. Nathan just fixed an issue and it might help you under macOS 12 beta.

Reference discussion: #911

 

 

 

Author

hl0521 commented on Aug 8 •

 

@hl0521 You may want to give latest git a try again (to run with sudo) under macOS 12 beta. Nathan just fixed an issue and it might help you under macOS 12 beta.

Reference discussion: #911

It works when running with sudo. Thanks.

I also found another issue: when calling "uvc_close" in libuvc, the following line of code in function "libusb_free_transfer" oftern lead to program crash.
usbi_dbg(TRANSFER_CTX(transfer), "transfer %p", transfer);
The cause is null pointer in TRANSFER_CTX(transfer), the object may have been released in other place. When I comment this line of code, the program can work.

 

 

 

Member

mcuee commented on Aug 8

Thanks for the updates. Then there is no issue with libusb already. I will close this issue.

The proper way (without using sudo) is for the developer to get the right entitlement as per the following discussion: #911

kUSBReEnumerateCaptureDeviceMask requires either the application to be running as root OR the application has the entitlement com.apple.vm.device-access AND the user has accepted the authorization for the capture with IOServiceAuthorize.

 

 

 

mcuee closed this on Aug 8

 

 

Member

mcuee commented on Aug 8

I also found another issue: when calling "uvc_close" in libuvc, the following line of code in function "libusb_free_transfer" oftern lead to program crash.
usbi_dbg(TRANSFER_CTX(transfer), "transfer %p", transfer);
The cause is null pointer in TRANSFER_CTX(transfer), the object may have been released in other place. When I comment this line of code, the program can work.

You may want to report the issue to libuvc, looks like a bug in libuvc. But if you think it is an issue with libusb, please create a new issue and post the debug log. Thanks.

 

 

 

 

scchn commented on Aug 12

Non-VM apps on the App Store have no way to get the 'com.apple.vm.device-access' or run as root by default.
Contacted apple and they suggested that I file a bug about this problem since macOS 12 is still in beta.

 

 

 

 

Member

mcuee commented on Aug 12

Non-VM apps on the App Store have no way to get the 'com.apple.vm.device-access' or run as root by default.
Contacted apple and they suggested that I file a bug about this problem since macOS 12 is still in beta.

Thanks for the updates. As for the first sentence, I am not so sure if it is correct or not. I think it is not correct to say "non-VM apps".

 

 

 

 

scchn commented on Aug 12

Ha, me either.

Quote from the mail:

That entitlement is intended for virtual machine (VM) apps that need to ship in the Mac App Store
(hence the `vm` in `com.apple.vm.device-access`).

 

 

 

Member

mcuee commented on Aug 12

Do not worry too much about the vm in the name.

https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_vm_device-access
The entitlement is required to use the IOUSBHost APIs for USB device capture.

 

 

 

Member

mcuee commented 28 days ago

https://github.com/libusb/libusb/wiki/FAQ#how-can-i-run-libusb-applications-under-mac-os-x-if-there-is-already-a-kernel-extension-installed-for-the-device-and-claim-exclusive-access

Updates on Oct 2021: with the merging of pull request #911, support for detaching kernel drivers with authorization has been added. This will be included in the upcoming 1.0.25 release. Take note the underlying macOS capture APIs only work on the whole device and not on individual interfaces. So this will force all the kernel extensions (drivers) bound to all the interfaces of a USB Composite devices to be released (Issue #920). You will need to get the entitlement from Apple Developer support, create a provisioning profile with that entitlement, and build your app with that profile. Please take note that command line apps cannot use provisioning profiles and therefore cannot hold this entitlement.

 

 

 

mcuee changed the title MacOS Monterey 12.0 Beta, libuvc, libusb: info [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access MacOS Monterey 12.0, libuvc, libusb: info [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access 20 days ago

 

 

mcuee reopened this 20 days ago

 

 

Member

mcuee commented 18 days ago

Please refer to the following discussion as well for further info. Apple support seems to say that the 'com.apple.vm.device-access' is not the right entitlement for this purpose.

• #1014

 

 

 

tormodvolden mentioned this issue 17 days ago

macOS: SetAlternateInterface: unknown error (0xe0005000) #1011

 

Open

 

 

Member

mcuee commented 15 days ago •

 

Ref: libuvc/libuvc#188

If you are just testing, then you can use latest libusb git and sudo. The following is with my Mac Mini M1 running macOS 12.0.1.

mcuee@mcuees-Mac-mini build % sudo ./example 
UVC initialized
Device found
Device opened
DEVICE CONFIGURATION (0ac8:3420/[none]) ---
Status: idle
VideoControl:
	bcdUVC: 0x0100
VideoStreaming(1):
	bEndpointAddress: 130
	Formats:
	UncompressedFormat(1)
		  bits per pixel: 16
		  GUID: 5955593200001000800000aa00389b71 (YUY2)
		  default frame: 1
		  aspect ratio: 0x0
		  interlace flags: 00
		  copy protect: 00
			FrameDescriptor(1)
			  capabilities: 00
			  size: 640x480
			  bit rate: 768000-196608000
			  max frame size: 614400
			  default interval: 1/30
			  interval[0]: 1/30
			  interval[1]: 1/14
			FrameDescriptor(2)
			  capabilities: 00
			  size: 352x288
			  bit rate: 768000-196608000
			  max frame size: 202752
			  default interval: 1/30
			  interval[0]: 1/30
			  interval[1]: 1/14
			FrameDescriptor(3)
			  capabilities: 00
			  size: 320x240
			  bit rate: 768000-196608000
			  max frame size: 153600
			  default interval: 1/30
			  interval[0]: 1/30
			  interval[1]: 1/14
			FrameDescriptor(4)
			  capabilities: 00
			  size: 176x144
			  bit rate: 768000-196608000
			  max frame size: 50688
			  default interval: 1/30
			  interval[0]: 1/30
			  interval[1]: 1/14
			FrameDescriptor(5)
			  capabilities: 00
			  size: 160x120
			  bit rate: 768000-196608000
			  max frame size: 38400
			  default interval: 1/30
			  interval[0]: 1/30
			  interval[1]: 1/14
			StillFrameDescriptor
			  bEndPointAddress: 00
			  wWidth(1) = 640
			  wHeight(1) = 480
			  wWidth(2) = 352
			  wHeight(2) = 288
			  wWidth(3) = 320
			  wHeight(3) = 240
			  wWidth(4) = 176
			  wHeight(4) = 144
			  wWidth(5) = 160
			  wHeight(5) = 120
END DEVICE CONFIGURATION

First format: (YUY2) 640x480 30fps
bmHint: 0001
bFormatIndex: 1
bFrameIndex: 1
dwFrameInterval: 333333
wKeyFrameRate: 0
wPFrameRate: 0
wCompQuality: 0
wCompWindowSize: 0
wDelay: 0
dwMaxVideoFrameSize: 614400
dwMaxPayloadTransferSize: 2688
bInterfaceNumber: 1
Streaming...
Enabling auto exposure ...
 ... full AE not supported, trying aperture priority mode
 ... enabled aperture priority auto exposure mode
callback! frame_format = 3, width = 640, height = 480, length = 614400, ptr = 12345
callback! frame_format = 3, width = 640, height = 480, length = 614400, ptr = 12345
callback! frame_format = 3, width = 640, height = 480, length = 614400, ptr = 12345
callback! frame_format = 3, width = 640, height = 480, length = 614400, ptr = 12345
callback! frame_format = 3, width = 640, height = 480, length = 614400, ptr = 12345
callback! frame_format = 3, width = 640, height = 480, length = 614400, ptr = 12345
...

 

 

 

 

Member

mcuee commented 15 days ago

ANother libuvc issue is here: libuvc/libuvc#194

 

 

 

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