libcamera: controls: Add controls for HDR

We add an HdrMode control (to enable and disable HDR processing)
and an HdrChannel, which indicates what kind of HDR frame (short, long
or medium) has just arrived.

Currently the HdrMode supports the following values:

* Off - no HDR processing at all.
* MultiExposureUnmerged - frames at multiple different exposures are
  produced, but not merged together. They are returned "as is".
* MultiExposure - frames at multiple different exposures are merged
  to create HDR images.
* SingleExposure - multiple frames all at the same exposure are
  merged to create HDR images.
* Night - multiple frames will be combined to create "night mode"
  images.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

0 files changed, 0 insertions, 0 deletions