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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2009-02-20 10:30:12 +0100 |
|---|---|---|
| committer | Hans Verkuil <hverkuil@xs4all.nl> | 2009-02-20 10:30:12 +0100 |
| commit | 28258187ce09827121e04b2de19e454032427d96 (patch) | |
| tree | e6ddf6f74cb433ff203a0dfc262c686ae05c0038 /v4l2-spec | |
| parent | d9920c08abb43a90d2d28c424ed1bafddd00cefe (diff) | |
| download | mediapointer-dvb-s2-28258187ce09827121e04b2de19e454032427d96.tar.gz mediapointer-dvb-s2-28258187ce09827121e04b2de19e454032427d96.tar.bz2 | |
v4l2-common/v4l2-spec: support/document write-only and button controls
From: Hans Verkuil <hverkuil@xs4all.nl>
The controls V4L2_CID_PAN_RESET and V4L2_CID_TILT_RESET changed their type
to button controls (these are unused at the moment, so this is a safe change).
The controls V4L2_CID_PAN_RELATIVE, V4L2_CID_TILT_RELATIVE, V4L2_CID_FOCUS_RELATIVE
and V4L2_CID_ZOOM_RELATIVE are marked as write-only controls.
Priority: normal
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
CC: Laurent Pinchart <laurent.pinchart@skynet.be>
Diffstat (limited to 'v4l2-spec')
| -rw-r--r-- | v4l2-spec/controls.sgml | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/v4l2-spec/controls.sgml b/v4l2-spec/controls.sgml index 7fbe82401..477a97077 100644 --- a/v4l2-spec/controls.sgml +++ b/v4l2-spec/controls.sgml @@ -1688,7 +1688,7 @@ remain constant.</entry> camera horizontally by the specified amount. The unit is undefined. A positive value moves the camera to the right (clockwise when viewed from above), a negative value to the left. A value of zero does not -cause motion.</entry> +cause motion. This is a write-only control.</entry> </row> <row><entry></entry></row> @@ -1698,25 +1698,23 @@ cause motion.</entry> </row><row><entry spanname="descr">This control turns the camera vertically by the specified amount. The unit is undefined. A positive value moves the camera up, a negative value down. A value of -zero does not cause motion.</entry> +zero does not cause motion. This is a write-only control.</entry> </row> <row><entry></entry></row> <row> <entry spanname="id"><constant>V4L2_CID_PAN_RESET</constant> </entry> - <entry>boolean</entry> - </row><row><entry spanname="descr">When this control is set -to <constant>TRUE</constant> (1), the camera moves horizontally to the -default position.</entry> + <entry>button</entry> + </row><row><entry spanname="descr">When this control is set, +the camera moves horizontally to the default position.</entry> </row> <row><entry></entry></row> <row> <entry spanname="id"><constant>V4L2_CID_TILT_RESET</constant> </entry> - <entry>boolean</entry> - </row><row><entry spanname="descr">When this control is set -to <constant>TRUE</constant> (1), the camera moves vertically to the -default position.</entry> + <entry>button</entry> + </row><row><entry spanname="descr">When this control is set, +the camera moves vertically to the default position.</entry> </row> <row><entry></entry></row> @@ -1759,7 +1757,7 @@ negative values towards infinity.</entry> </row><row><entry spanname="descr">This control moves the focal point of the camera by the specified amount. The unit is undefined. Positive values move the focus closer to the camera, -negative values towards infinity.</entry> +negative values towards infinity. This is a write-only control.</entry> </row> <row><entry></entry></row> @@ -1787,7 +1785,7 @@ value should be a positive integer.</entry> </row><row><entry spanname="descr">Specify the objective lens focal length relatively to the current value. Positive values move the zoom lens group towards the telephoto direction, negative values towards the -wide-angle direction. The zoom unit is driver-specific.</entry> +wide-angle direction. The zoom unit is driver-specific. This is a write-only control.</entry> </row> <row><entry></entry></row> |