Hi Laurent,
Laurent Pinchart wrote:
Hi,
On Sunday 23 September 2012 16:20:06 Sakari Ailus wrote:
Prabhakar Lad wrote:
Hi All,
The CCD/Sensors have the capability to adjust the R/ye, Gr/Cy, Gb/G,
B/Mg gain values.
Since these control can be re-usable I am planning to add the
following gain controls as part
of the framework:
1: V4L2_CID_GAIN_RED
2: V4L2_CID_GAIN_GREEN_RED
3: V4L2_CID_GAIN_GREEN_BLUE
4: V4L2_CID_GAIN_BLUE
5: V4L2_CID_GAIN_OFFSET
I need your opinion's to get moving to add them.
We already have a V4L2_CID_GAIN control and a V4L2_CID_CHROMA_GAIN control in
the user controls class. I'd like to document how those controls and the new
proposed gain controls interact. At first glance they don't interact at all,
devices should not implement both, the user class gain controls are higher-
level than the controls you proposed - this should still be documented though,
to make sure driver and application authors will not get confused.
A couple of quick questions about the new controls. Do we also need a common
gain controls for monochrome sensors ? Is the offset always common for the 4
I think we should have a common gain control for sensors in general,
whether monochrome or not. Many sensors support global digital gain,
either only or besides the per-channel gains.
Kind regards,
--
Sakari Ailus
sakari.ailus@xxxxxx
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