[media] videodev2.h: add V4L2_FIELD_HAS_T_OR_B macro
Add a macro to test if the field consists of a single top
or bottom field. Anyone who needs to work with fields as opposed to
frame will need this.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index b73e8cd..1f1a65c 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -124,6 +124,10 @@
(field) == V4L2_FIELD_INTERLACED_BT ||\
(field) == V4L2_FIELD_SEQ_TB ||\
(field) == V4L2_FIELD_SEQ_BT)
+#define V4L2_FIELD_HAS_T_OR_B(field) \
+ ((field) == V4L2_FIELD_BOTTOM ||\
+ (field) == V4L2_FIELD_TOP ||\
+ (field) == V4L2_FIELD_ALTERNATE)
enum v4l2_buf_type {
V4L2_BUF_TYPE_VIDEO_CAPTURE = 1,