Hi,
On 11/08/2009 10:56 AM, Németh Márton wrote:
Hi,
Hans de Goede wrote:
[snip]
About the usb control msg errors, I don't think they are related to this issue at all, no real
world app ever does a streamon and an mmap at the same time. As said if we could serialize mmap and
ioctl at a high enough level, things would be fine too.
I am using http://moinejf.free.fr/svv.c . In the start_capturing() function it calls the
VIDIOC_STREAMON ioctl in case of memory mapped mode. Is this wrong? Or do you mean under
"at the same time" that VIDIOC_STREAMON and mmap() is called from different tasks/threads?
Yes from 2 different threads, which are both the stream owner (so operating on the same FD).
Regards,
Hans
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