diff options
| author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2012-04-30 03:34:10 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-14 13:24:24 -0400 |
| commit | cf072139c7952e267a2eff334f224a62c949ee96 (patch) | |
| tree | 9e793840d43b70152f506a43fe7e06ee97e7f524 /Documentation/DocBook/media/v4l | |
| parent | 7f84ad8bdb63a8bfcbb83755e487e06be5db54cf (diff) | |
[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/DocBook/media/v4l')
| -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> | |||
| 2864 | </row> | 2864 | </row> |
| 2865 | <row><entry></entry></row> | 2865 | <row><entry></entry></row> |
| 2866 | 2866 | ||
| 2867 | <row id="v4l2-exposure-metering"> | ||
| 2868 | <entry spanname="id"><constant>V4L2_CID_EXPOSURE_METERING</constant> </entry> | ||
| 2869 | <entry>enum v4l2_exposure_metering</entry> | ||
| 2870 | </row><row><entry spanname="descr">Determines how the camera measures | ||
| 2871 | the amount of light available for the frame exposure. Possible values are:</entry> | ||
| 2872 | </row> | ||
| 2873 | <row> | ||
| 2874 | <entrytbl spanname="descr" cols="2"> | ||
| 2875 | <tbody valign="top"> | ||
| 2876 | <row> | ||
| 2877 | <entry><constant>V4L2_EXPOSURE_METERING_AVERAGE</constant> </entry> | ||
| 2878 | <entry>Use the light information coming from the entire frame | ||
| 2879 | and average giving no weighting to any particular portion of the metered area. | ||
| 2880 | </entry> | ||
| 2881 | </row> | ||
| 2882 | <row> | ||
| 2883 | <entry><constant>V4L2_EXPOSURE_METERING_CENTER_WEIGHTED</constant> </entry> | ||
| 2884 | <entry>Average the light information coming from the entire frame | ||
| 2885 | giving priority to the center of the metered area.</entry> | ||
| 2886 | </row> | ||
| 2887 | <row> | ||
| 2888 | <entry><constant>V4L2_EXPOSURE_METERING_SPOT</constant> </entry> | ||
| 2889 | <entry>Measure only very small area at the center of the frame.</entry> | ||
| 2890 | </row> | ||
| 2891 | </tbody> | ||
| 2892 | </entrytbl> | ||
| 2893 | </row> | ||
| 2894 | <row><entry></entry></row> | ||
| 2895 | |||
| 2867 | <row> | 2896 | <row> |
| 2868 | <entry spanname="id"><constant>V4L2_CID_PAN_RELATIVE</constant> </entry> | 2897 | <entry spanname="id"><constant>V4L2_CID_PAN_RELATIVE</constant> </entry> |
| 2869 | <entry>integer</entry> | 2898 | <entry>integer</entry> |