| Message ID | 1353017207-370-2-git-send-email-sakari.ailus@iki.fi (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu November 15 2012 23:06:45 Sakari Ailus wrote: > 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 <sakari.ailus@iki.fi> > --- > drivers/media/v4l2-core/v4l2-common.c | 10 ++++++++++ > include/media/v4l2-common.h | 2 ++ > 2 files changed, 12 insertions(+), 0 deletions(-) > > diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c > index 380ddd8..614316f 100644 > --- a/drivers/media/v4l2-core/v4l2-common.c > +++ b/drivers/media/v4l2-core/v4l2-common.c > @@ -978,3 +978,13 @@ const struct v4l2_frmsize_discrete *v4l2_find_nearest_format( > return best; > } > EXPORT_SYMBOL_GPL(v4l2_find_nearest_format); > + > +void v4l2_get_timestamp(struct timeval *tv) > +{ > + struct timespec ts; > + > + ktime_get_ts(&ts); > + tv->tv_sec = ts.tv_sec; > + tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC; > +} > +EXPORT_SYMBOL_GPL(v4l2_get_timestamp); > diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h > index 1a0b2db..ec7c9c0 100644 > --- a/include/media/v4l2-common.h > +++ b/include/media/v4l2-common.h > @@ -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_ */ > Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c index 380ddd8..614316f 100644 --- a/drivers/media/v4l2-core/v4l2-common.c +++ b/drivers/media/v4l2-core/v4l2-common.c @@ -978,3 +978,13 @@ const struct v4l2_frmsize_discrete *v4l2_find_nearest_format( return best; } EXPORT_SYMBOL_GPL(v4l2_find_nearest_format); + +void v4l2_get_timestamp(struct timeval *tv) +{ + struct timespec ts; + + ktime_get_ts(&ts); + tv->tv_sec = ts.tv_sec; + tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC; +} +EXPORT_SYMBOL_GPL(v4l2_get_timestamp); diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index 1a0b2db..ec7c9c0 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -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_ */
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 <sakari.ailus@iki.fi> --- drivers/media/v4l2-core/v4l2-common.c | 10 ++++++++++ include/media/v4l2-common.h | 2 ++ 2 files changed, 12 insertions(+), 0 deletions(-)