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[media] videodev2.h: add defines for the VBI field start lines

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While working with raw and sliced VBI support in several applications
I noticed that you really need to know the start linenumbers for
each video field in order to correctly convert the start line numbers
reported by v4l2_vbi_format to the line numbers used in v4l2_sliced_vbi_format.

This patch adds four defines that specify the start lines for each
field for both 525 and 625 line standards.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Hans Verkuil 2014-07-18 02:58:41 -03:00 committed by Mauro Carvalho Chehab
parent 1c6f3db04f
commit 273886b4f7
1 changed files with 6 additions and 0 deletions
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6
include/uapi/linux/videodev2.h
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@ -1642,6 +1642,12 @@ struct v4l2_vbi_format {
#define V4L2_VBI_UNSYNC (1 << 0)
#define V4L2_VBI_INTERLACED (1 << 1)
/* ITU-R start lines for each field */
#define V4L2_VBI_ITU_525_F1_START (1)
#define V4L2_VBI_ITU_525_F2_START (264)
#define V4L2_VBI_ITU_625_F1_START (1)
#define V4L2_VBI_ITU_625_F2_START (314)
/* Sliced VBI
*
* This implements is a proposal V4L2 API to allow SLICED VBI