[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>
This commit is contained in:
Sylwester Nawrocki
2012-04-30 04:34:10 -03:00
committed by Mauro Carvalho Chehab
parent 7f84ad8bdb
commit cf072139c7
3 changed files with 46 additions and 0 deletions

View File

@@ -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>&nbsp;</entry>
<entry>enum&nbsp;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>&nbsp;</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>&nbsp;</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>&nbsp;</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>&nbsp;</entry>
<entry>integer</entry>