Hi Paulo, On Monday 30 November 2009 17:49:24 Paulo Assis wrote: > Hi, > using ktime_get (hrtimer.h) should provide a nice monotonic high res > timer as a replacement for do_gettimeofday: > > ktime_to_timeval (ktime_get()) should return the timeval struct for > buf->buf.timestamp. > > This seems the best aproach for video frame time-stamping; it's > monotonic and it has a more than adequate resolution.
While I agree with you, we have a problem here. The V4L2 specification mandates the use of gettimeofday() to fill the v4l2_buffer::timestamp field: http://www.linuxtv.org/downloads/video4linux/API/V4L2_API/spec- single/v4l2.html#v4l2-buffer I'll discuss this with core V4L2 developers. -- Regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
