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libcamera: camera_sensor: Initialize PixelArray properties

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Initialize pixel array properties 'PixelArraySize' and
'PixelArrayActiveAreas' by inspecting the V4L2 CROP_BOUNDS and
CROP_DEFAULT selection targets.

The properties are registered only if the sensor subdevice support
the above mentioned selection targets.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
This commit is contained in:
Jacopo Mondi 2020-11-06 14:47:26 +01:00
parent 3cb48fb921
commit 8aaa41ee9b
1 changed files with 19 additions and 0 deletions
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19
src/libcamera/camera_sensor.cpp
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@ -288,6 +288,25 @@ int CameraSensor::initProperties()
propertyValue = 0;
properties_.set(properties::Rotation, propertyValue);
Rectangle bounds;
ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP_BOUNDS, &bounds);
if (!ret)
properties_.set(properties::PixelArraySize, bounds.size());
Rectangle crop;
ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP_DEFAULT, &crop);
if (!ret) {
/*
* V4L2_SEL_TGT_CROP_DEFAULT and V4L2_SEL_TGT_CROP_BOUNDS are
* defined relatively to the sensor full pixel array size,
* while properties::PixelArrayActiveAreas is defined relatively
* to properties::PixelArraySize. Adjust it.
*/
crop.x -= bounds.x;
crop.y -= bounds.y;
properties_.set(properties::PixelArrayActiveAreas, { crop });
}
return 0;
}