Commit 1c3721b1 authored by Steve Longerbeam's avatar Steve Longerbeam Committed by Mauro Carvalho Chehab
Browse files

media: videodev2.h: Add more field helper macros 



Adds two helper macros:

V4L2_FIELD_IS_SEQUENTIAL: returns true if the given field type is
'sequential', that is a full frame is transmitted, or exists in
memory, as all top field lines followed by all bottom field lines,
or vice-versa.

V4L2_FIELD_IS_INTERLACED: returns true if the given field type is
'interlaced', that is a full frame is transmitted, or exists in
memory, as top field lines interlaced with bottom field lines.

Signed-off-by: default avatarSteve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent c5ff0edb

include/uapi/linux/videodev2.h

+7 −0
Original line number Diff line number Diff line
@@ -130,6 +130,13 @@ enum v4l2_field { 
	((field) == V4L2_FIELD_BOTTOM ||\

	 (field) == V4L2_FIELD_TOP ||\

	 (field) == V4L2_FIELD_ALTERNATE)

#define V4L2_FIELD_IS_INTERLACED(field) \

	((field) == V4L2_FIELD_INTERLACED ||\

	 (field) == V4L2_FIELD_INTERLACED_TB ||\

	 (field) == V4L2_FIELD_INTERLACED_BT)

#define V4L2_FIELD_IS_SEQUENTIAL(field) \

	((field) == V4L2_FIELD_SEQ_TB ||\

	 (field) == V4L2_FIELD_SEQ_BT)



enum v4l2_buf_type {

	V4L2_BUF_TYPE_VIDEO_CAPTURE        = 1,