libv4l: Skype terminates after options dialogue is closed

[Ian Pickworth <ian@pickworth.me.uk>]

I have had this problem since I started using libv4l 0.5.1, I've just
upgraded to 0.5.3 but it still persists unfortunately.

The process I go through is as follows:
	LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so /usr/bin/skype &
	
	After Skype starts, open the Skype options dialogue
	Select the "Video Devices" tab
	With "Enable Skype Video" enabled, select the Camera device
	Press "test" - which shows the webcam picture correctly

	Press close

At this point Skype aborts.
I get the same result is I use this command:
	LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so /usr/bin/skype &

I'm not sure what diagnostics would be useful here, so if anyone can
suggest what is needed I will provide them. I ran it using strace, thus:

	LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so strace /usr/bin/skype

which ended with this:
------
futex(0xa4df064, FUTEX_WAKE, 1)         = 1

gettimeofday({1225216076, 870558}, NULL) = 0

clock_gettime(CLOCK_REALTIME, {1225216076, 870611460}) = 0

futex(0xa88ffd8, FUTEX_WAIT, 1, {9, 999946540}upeek:
ptrace(PTRACE_PEEKUSER,26933,44,0): No such process
------

Some details:

ian2 ~ # lsusb
...
Bus 002 Device 003: ID 046d:092e Logitech, Inc.
...
ian2 ~ # uname -r
2.6.27-gentoo-r1

I am using the gspca modules as provided in this kernel.
I have tried the latest version from hg - there is no change with that,
which makes me think this may be to do with the compatibility layer.

Thanks
Regards
Ian

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