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| author | Sakari Ailus <sakari.ailus@iki.fi> | 2012-10-21 16:02:47 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-12-21 10:44:52 -0200 |
| commit | 1202ecdc24fc88d5b144824f55ec9c8899591caf (patch) | |
| tree | 97a4925b3ba400fbcd20b72ea81818a3bf62688f /include/uapi/linux/videodev2.h | |
| parent | 1b5901331ff3af4bdc1b998a056a248c9924e2d1 (diff) | |
| download | lwn-1202ecdc24fc88d5b144824f55ec9c8899591caf.tar.gz lwn-1202ecdc24fc88d5b144824f55ec9c8899591caf.zip | |
[media] v4l: Define video buffer flags for timestamp types
Define video buffer flags for different timestamp types. Everything up to
now have used either realtime clock or monotonic clock, without a way to
tell which clock the timestamp was taken from.
Also document that the clock source of the timestamp in the timestamp field
depends on buffer flags.
[mchehab@redhat.com: fix a few wrong references to Kernel 3.8 - as this patch
is meant for 3.9]
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/uapi/linux/videodev2.h')
| -rw-r--r-- | include/uapi/linux/videodev2.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 39d2cecdf38c..94cbe26e9f00 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -701,6 +701,10 @@ struct v4l2_buffer { /* Cache handling flags */ #define V4L2_BUF_FLAG_NO_CACHE_INVALIDATE 0x0800 #define V4L2_BUF_FLAG_NO_CACHE_CLEAN 0x1000 +/* Timestamp type */ +#define V4L2_BUF_FLAG_TIMESTAMP_MASK 0xe000 +#define V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN 0x0000 +#define V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC 0x2000 /** * struct v4l2_exportbuffer - export of video buffer as DMABUF file descriptor |