Looking for working USB borescope recommendation..

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 21, 2014

• #1

I'm wanting to add a borescope to my Nexus and realize that not all of them are compatible. I've purchased a USB model that is not compatible even after a jailbreak so I was hoping someone has had the opportunity to test any that are compatible?

I purchased the following:

ebay item: 141214106067

and was looking at the following since it appears to have a USB2.0 UVC interface

ebay item: 111107144638

Any help or guidance would be appreciated..

VB,

 

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 22, 2014

• #2

I managed to pry out the following information from the command line

#dmesg | grep video

Linux Video capture interface: v2.00
usbcore: registered new interface driver uvcvideo
uvcvideo: Found UVC 1.00 device USB camera (0bda:5801)

I believe this means the my USB camera is already using the UVC driver in attempt to work properly..

Anyone have any suggestions on how to possibly get this to work?

 

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 22, 2014

• #3

Actually looks like its supported at Linux UVC

0bda:5801 Realtek 2SF022 (HP Pavillon DV7 4151SG notebooks) Realtek

 

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 22, 2014

• #4

Continuing to dig and finding this in dmesg- firewalled???

130|root@flo:/ # dmesg | grep video
<6>[ 7539.970855] uvcvideo: Found UVC 1.00 device USB Camera (0bda:5801)
<6>[ 8885.732574] uvcvideo: Found UVC 1.00 device USB Camera (0bda:5801)
<5>[ 8917.306060] type=1400 audit(1398128520.701:44): avc: denied { getattr } for pid=5504 comm="ra.simplewebcam" path="/dev/video0" dev="tmpfs" ino=7536 scontext=u:r:untrusted_app:s0 tcontext=ubject_r:video_device:s0 tclass=chr_file
<6>[ 9269.163787] uvcvideo: Found UVC 1.00 device USB Camera (0bda:5801)
<6>[ 9537.000366] uvcvideo: Found UVC 1.00 device USB Camera (0bda:5801)
<5>[ 9575.854766] type=1400 audit(1398129235.463:47): avc: denied { getattr } for pid=6112 comm="ra.simplewebcam" path="/dev/video0" dev="tmpfs" ino=7536 scontext=u:r:untrusted_app:s0 tcontext=ubject_r:video_device:s0 tclass=chr_file
<6>[ 9686.335266] uvcvideo: Found UVC 1.00 device USB Camera (0bda:5801)
<6>[ 9902.219024] uvcvideo: Found UVC 1.00 device USB Camera (0bda:5801)
<5>[ 9994.940917] type=1400 audit(1398129654.551:48): avc: denied { read write } for pid=6406 comm="ra.simplewebcam" name="video0" dev="tmpfs" ino=7536 scontext=u:r:untrusted_app:s0 tcontext=ubject_r:video_device:s0 tclass=chr_file
<5>[ 9994.941192] type=1400 audit(1398129654.551:49): avc: denied { open } for pid=6406 comm="ra.simplewebcam" name="video0" dev="tmpfs" ino=7536 scontext=u:r:untrusted_app:s0 tcontext=ubject_r:video_device:s0 tclass=chr_file
<6>[10049.950195] uvcvideo: Found UVC 1.00 device USB Camera (0bda:5801)

 

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 22, 2014

• #5

I've temporarily disabled SELinux.. still no luck but the avc: denied errors are gone.

It looks like there is a device conflict as it seems to not be able to open the /dev/video0?

Anyone have any thoughts?

D/dalvikvm( 2962): Trying to load lib /data/app-lib/com.camera.simplewebcam-1/libImageProc.so 0x41ea2f78
D/dalvikvm( 2962): Added shared lib /data/app-lib/com.camera.simplewebcam-1/libImageProc.so 0x41ea2f78
D/dalvikvm( 2962): No JNI_OnLoad found in /data/app-lib/com.camera.simplewebcam-1/libImageProc.so 0x41ea2f78, skipping init
D/dalvikvm( 2962): GC_FOR_ALLOC freed 71K, 2% free 9181K/9284K, paused 17ms, total 17ms
I/dalvikvm-heap( 2962): Grow heap (frag case) to 10.166MB for 1228816-byte allocation
D/dalvikvm( 2962): GC_FOR_ALLOC freed 1K, 2% free 10380K/10488K, paused 14ms, total 14ms
E/TEST ( 2962): Cannot open '/dev/video0': 16, Device or resource busy
D/dalvikvm( 2962): GC_CONCURRENT freed <1K, 2% free 10381K/10488K, paused 3ms+2ms, total 18ms
I/ActivityManager( 590): Displayed com.camera.simplewebcam/.Main: +211ms


I'm guessing this has something to do with the 2 built in camera's... not sure if they can be temporarily disabled or somehow mount the USB camera on another /dev maybe like /dev/video3?

 

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 23, 2014

• #6

making very little progress but I think I know what's going on.. the USB device is being loaded as /dev/video3 and not as /dev/video0 which I assume is what most applications are looking for.

This was me plugging and unplugging the camera. I believe this also tells me that the kernel already is set for the camera.

root@flo:/ # ls -l /dev/v*
crw-rw---- system camera 81, 1 2014-04-22 21:54 v4l-subdev0
crw-rw---- system camera 81, 2 2014-04-22 21:54 v4l-subdev1
crw-rw---- system camera 81, 3 2014-04-22 21:54 v4l-subdev2
crw-rw---- system camera 81, 4 2014-04-22 21:54 v4l-subdev3
crw-rw---- system camera 81, 5 2014-04-22 21:54 v4l-subdev4
crw-rw---- system camera 81, 7 2014-04-22 21:54 v4l-subdev5
crw-rw---- system camera 81, 9 2014-04-22 21:54 v4l-subdev6
crw-rw---- system camera 81, 10 2014-04-22 21:54 v4l-subdev7
crw-rw---- system camera 81, 11 2014-04-22 21:54 v4l-subdev8
crw-rw---- system camera 81, 12 2014-04-22 21:54 v4l-subdev9
crw------- root root 7, 0 2014-04-22 21:54 vcs
crw------- root root 7, 1 2014-04-22 21:54 vcs1
crw------- root root 7, 128 2014-04-22 21:54 vcsa
crw------- root root 7, 129 2014-04-22 21:54 vcsa1
crw------- root root 10, 127 2014-04-22 21:54 vga_arbiter
crw-rw---- system camera 81, 0 2014-04-22 21:54 video0
crw-rw---- system camera 81, 6 2014-04-22 21:54 video1
crw-rw---- system camera 81, 8 2014-04-22 21:54 video2
root@flo:/ # ls -l /dev/v*
crw-rw---- system camera 81, 1 2014-04-22 21:54 v4l-subdev0
crw-rw---- system camera 81, 2 2014-04-22 21:54 v4l-subdev1
crw-rw---- system camera 81, 3 2014-04-22 21:54 v4l-subdev2
crw-rw---- system camera 81, 4 2014-04-22 21:54 v4l-subdev3
crw-rw---- system camera 81, 5 2014-04-22 21:54 v4l-subdev4
crw-rw---- system camera 81, 7 2014-04-22 21:54 v4l-subdev5
crw-rw---- system camera 81, 9 2014-04-22 21:54 v4l-subdev6
crw-rw---- system camera 81, 10 2014-04-22 21:54 v4l-subdev7
crw-rw---- system camera 81, 11 2014-04-22 21:54 v4l-subdev8
crw-rw---- system camera 81, 12 2014-04-22 21:54 v4l-subdev9
crw------- root root 7, 0 2014-04-22 21:54 vcs
crw------- root root 7, 1 2014-04-22 21:54 vcs1
crw------- root root 7, 128 2014-04-22 21:54 vcsa
crw------- root root 7, 129 2014-04-22 21:54 vcsa1
crw------- root root 10, 127 2014-04-22 21:54 vga_arbiter
crw-rw---- system camera 81, 0 2014-04-22 21:54 video0
crw-rw---- system camera 81, 6 2014-04-22 21:54 video1
crw-rw---- system camera 81, 8 2014-04-22 21:54 video2
crw-rw---- system camera 81, 14 2014-04-22 21:56 video3
root@flo:/ # ls -l /dev/v*
crw-rw---- system camera 81, 1 2014-04-22 21:54 v4l-subdev0
crw-rw---- system camera 81, 2 2014-04-22 21:54 v4l-subdev1
crw-rw---- system camera 81, 3 2014-04-22 21:54 v4l-subdev2
crw-rw---- system camera 81, 4 2014-04-22 21:54 v4l-subdev3
crw-rw---- system camera 81, 5 2014-04-22 21:54 v4l-subdev4
crw-rw---- system camera 81, 7 2014-04-22 21:54 v4l-subdev5
crw-rw---- system camera 81, 9 2014-04-22 21:54 v4l-subdev6
crw-rw---- system camera 81, 10 2014-04-22 21:54 v4l-subdev7
crw-rw---- system camera 81, 11 2014-04-22 21:54 v4l-subdev8
crw-rw---- system camera 81, 12 2014-04-22 21:54 v4l-subdev9
crw------- root root 7, 0 2014-04-22 21:54 vcs
crw------- root root 7, 1 2014-04-22 21:54 vcs1
crw------- root root 7, 128 2014-04-22 21:54 vcsa
crw------- root root 7, 129 2014-04-22 21:54 vcsa1
crw------- root root 10, 127 2014-04-22 21:54 vga_arbiter
crw-rw---- system camera 81, 0 2014-04-22 21:54 video0
crw-rw---- system camera 81, 6 2014-04-22 21:54 video1
crw-rw---- system camera 81, 8 2014-04-22 21:54 video2
root@flo:/ #

 

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 23, 2014

• #7

Found an interesting thread where I believe the developer is trying to make the USB camera /dev/video0... I'd post the URL but I've only posted 7 times to the forum.

sorry... gonna post a few more time to meet the 10 post limit to post URL's... and I have to wait 5 minutes between posts.. a bit on the paranoid side around here..

 

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 23, 2014

• #8

Gonna try flashing a zip file.. of a potential fix?

 

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 23, 2014

• #9

Backing up my device.. post #9

 

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 23, 2014

• #10

Device done backing up..

 

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 23, 2014

• #11

Here is the URL:

http://xdaforums.com/showthread.php?t=2100452&page=4

Anyone know if this is still a working solution?

 

V

vbtalent

Member

Apr 21, 2014

13

0

• Apr 26, 2014

• #12

Wow.. no suggestions or reply's to this thread. Huge bummer..

Still digging around and seeing some noise about using the /system/etc/nvcamera.conf file however that file is not on my Nexus 7? I trieed creating one but not sure its being read.. maybe it is. Anyway, it didn't work..

Need to make /system directory read/write:

# mount -o rw,remount /system

# vi /etc/nvcamera.conf# format, cameraName=device,direction,orientation,type

This is the file before mods
# type can be 'stereo' for stereo capable, 'mono' for not stereo capable,
# 'usb' to enable searching for a usb device and where to put it in the list
# if found. Lines must be shorter then 256 characters
version=1
camera0=/dev/ov5640,back,0,mono
#camera1=/dev/ov5650,back,0,mono // 2nd camera for stereo once supported
camera1=/dev/mi1040,front,0,mono
#camera4=/dev/ov5650,back,0,stereo // virtual stereo device once supported


Change this line:
camera0=/dev/ov5640,back,0,mono

to:
camera0=/dev/ov5640,front,0,mono

And this line:
camera1=/dev/mi1040,front,0,mono

to:
camera1=/dev/mi1040,back,0,mono

Click to expand...

Click to collapse

I could really use some help with this.. anyone?

 

V

vbtalent

Member

Apr 21, 2014

13

0

• May 1, 2014

• #13

Just wanted to close the loop and let the forum know that I got my generic borescope working on my Nexus via the USB port, I did have to root it but might not have had to assuming I could give permissions of /ueventd.xxxx.rc set to 0666. SInce its rooted its a moot point..

I also modified the source code for simplewebcam (https://bitbucket.org/droidperception/simplewebcam/overview)

VB,