diff options
| author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2012-04-30 04:34:10 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-14 14:24:24 -0300 |
| commit | cf072139c7952e267a2eff334f224a62c949ee96 (patch) | |
| tree | 9e793840d43b70152f506a43fe7e06ee97e7f524 /Documentation | |
| parent | 7f84ad8bdb63a8bfcbb83755e487e06be5db54cf (diff) | |
| download | linux-cf072139c7952e267a2eff334f224a62c949ee96.tar.bz2 | |
[media] V4L: Add camera exposure metering control
The V4L2_CID_EXPOSURE_METERING control allows to determine
a method used by the camera for measuring the amount of light
available for automatic exposure.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/DocBook/media/v4l/controls.xml | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml index 8fccfe1b2058..e8c63e04741f 100644 --- a/Documentation/DocBook/media/v4l/controls.xml +++ b/Documentation/DocBook/media/v4l/controls.xml @@ -2864,6 +2864,35 @@ exposure time and/or aperture.</para></entry> </row> <row><entry></entry></row> + <row id="v4l2-exposure-metering"> + <entry spanname="id"><constant>V4L2_CID_EXPOSURE_METERING</constant> </entry> + <entry>enum v4l2_exposure_metering</entry> + </row><row><entry spanname="descr">Determines how the camera measures +the amount of light available for the frame exposure. Possible values are:</entry> + </row> + <row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_EXPOSURE_METERING_AVERAGE</constant> </entry> + <entry>Use the light information coming from the entire frame +and average giving no weighting to any particular portion of the metered area. + </entry> + </row> + <row> + <entry><constant>V4L2_EXPOSURE_METERING_CENTER_WEIGHTED</constant> </entry> + <entry>Average the light information coming from the entire frame +giving priority to the center of the metered area.</entry> + </row> + <row> + <entry><constant>V4L2_EXPOSURE_METERING_SPOT</constant> </entry> + <entry>Measure only very small area at the center of the frame.</entry> + </row> + </tbody> + </entrytbl> + </row> + <row><entry></entry></row> + <row> <entry spanname="id"><constant>V4L2_CID_PAN_RELATIVE</constant> </entry> <entry>integer</entry> |