Hello,
On 2010-09-10 13:27, Mauro Carvalho Chehab wrote:
1) it lacks implementation of read() method. This means that vivi driver
has a regression, as it currently supports it.
Yes, read() is not yet implemented. I guess it is not a feature that would
be deprecated, right?
Yes, there are no plans to deprecate it. Also, some devices like cx88 and bttv
allows receiving simultaneous streams, one via mmap, and another via read().
This is used by some applications to allow recording video via ffmpeg/mencoder
using read(), while the main application is displaying video using mmap.
Well, in my opinion such devices should provide two separate /dev/videoX
nodes rather than hacking with mmap and read access types.
Best regards
--
Marek Szyprowski
Samsung Poland R&D Center
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