From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
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@xxxxxxxxx>
---
include/uapi/linux/videodev2.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 1f1a65c..b66148c 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1639,6 +1639,12 @@ 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
--
2.0.0
--
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