[media] cx18: mmap() support for raw YUV video capture
Add support for mmap method streaming of raw YUV video on cx18-based hardware, in addition to the existing support for read() streaming of raw YUV and MPEG-2 encoded video. [simon.farnsworth@onelan.co.uk: I forward-ported this from Steven's original work, done under contract to ONELAN. The original code is at http://www.kernellabs.com/hg/~stoth/cx18-videobuf] Signed-off-by: NSteven Toth <stoth@kernellabs.com> Signed-off-by: NSimon Farnsworth <simon.farnsworth@onelan.co.uk> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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