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[media] v4l: Helper function for obtaining timestamps

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v4l2_get_timestamp() produces a monotonic timestamp but unlike
ktime_get_ts(), it uses struct timeval instead of struct timespec, saving
the drivers the conversion job when getting timestamps for v4l2_buffer's
timestamp field.

Signed-off-by: Sakari Ailus <[email protected]>
Acked-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Sakari Ailus 2012-09-15 07:51:47 -03:00 • committed by Mauro Carvalho Chehab
commit abd2329564
2 changed files with 12 additions and 0 deletions
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include/media/v4l2-common.h
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@ -225,4 +225,6 @@ bool v4l2_detect_gtf(unsigned frame_height, unsigned hfreq, unsigned vsync,
struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait);
void v4l2_get_timestamp(struct timeval *tv);
#endif /* V4L2_COMMON_H_ */