From 924b34ea48252cdf258aec759638b61c7d82f282 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 20 Mar 2015 14:05:02 -0300 Subject: [PATCH] [media] DocBook media: improve V4L2_DV_FL_HALF_LINE documentation Explicitly specify where the half-line is added or removed in each field. Signed-off-by: Hans Verkuil Cc: Prashant Laddha Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml index c4336577ff06..7d10784a0fce 100644 --- a/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml @@ -318,10 +318,11 @@ can't generate such frequencies, then the flag will also be cleared. V4L2_DV_FL_HALF_LINE - Specific to interlaced formats: if set, then field 1 (aka the odd field) -is really one half-line longer and field 2 (aka the even field) is really one half-line -shorter, so each field has exactly the same number of half-lines. Whether half-lines can be -detected or used depends on the hardware. + Specific to interlaced formats: if set, then the vertical frontporch +of field 1 (aka the odd field) is really one half-line longer and the vertical backporch +of field 2 (aka the even field) is really one half-line shorter, so each field has exactly +the same number of half-lines. Whether half-lines can be detected or used depends on +the hardware. -- 2.30.2