From f1158af2b2e064532470516943511863a873c5e5 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 9 May 2010 06:54:46 -0300 Subject: V4L/DVB: V4L2 Spec: Improve the VIDIOC_QUERY_DV_PRESET description Make explicit what should happen when the input signal is missing, unreliable or does not map to a supported preset. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/v4l/vidioc-query-dv-preset.xml | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'Documentation') diff --git a/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml b/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml index 87e4f0f6151c..402229ee06f6 100644 --- a/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml +++ b/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml @@ -53,8 +53,10 @@ input automatically, similar to sensing the video standard. To do so, applications call VIDIOC_QUERY_DV_PRESET with a pointer to a &v4l2-dv-preset; type. Once the hardware detects a preset, that preset is -returned in the preset field of &v4l2-dv-preset;. When detection is not -possible or fails, the value V4L2_DV_INVALID is returned. +returned in the preset field of &v4l2-dv-preset;. If the preset could not be +detected because there was no signal, or the signal was unreliable, or the +signal did not map to a supported preset, then the value V4L2_DV_INVALID is +returned. -- cgit v1.2.3