Webcam and linux-gspca-kmod

[Yong-Jhen Hong]

Luigi Rizzo wrote:
> 
> ok thanks for the patch, i will try to fix this in the next release.
> 

Thank you for this and your work on the emulation layer!

> 
> in order to test the driver, the best option is to use
> the 'pwcview' program in the linux-kmod-compat directory.


Unfortunately, pwcview yields the same error as Cheese:

<dmesg>
40406394 [1081] video_devdata: not complete but ok for now
spca5xx_set_light_freq: [spca5xx_set_light_freq:1920] Sensor currently
not support light frequency banding filters.
gspca_set_isoc_ep: [gspca_set_isoc_ep:936] ISO EndPoint found 0x82
AlternateSet 7
40406914 [ 876] usb_submit_urb: openpipe error 4
init isoc: usb_submit_urb(0) ret -440406914 [ 959] usb_kill_urb: not
complete but try something
40406914 [ 959] usb_kill_urb: not complete but try something
40406914 [ 959] usb_kill_urb: not complete but try something
40406914 [ 959] usb_kill_urb: not complete but try something
spca5xx_open: [spca5xx_open:1987]  DEALLOC error on init_Isoc

</dmesg>


> 
> Re. other applications, one thing to remember is that the freebsd
> port of gspca does not support mmap, which seems to be the preferred
> access method for Linux apps.  So you need to rewrite a small piece
> of the client using read() to a locally allocated buffer to access
> the video.
> 
> A patch of this kind for linphone is at
> 
> 	http://info.iet.unipi.it/~luigi/patch-msv4l.c
> 
> see if you can do something similar with your program.
> 
> 	cheers
> 	luigi

Thanks, I will try the patch and the idea later.


Cheers,
yongjhen