libcamera: camera_sensor: Introduce CameraSensorFactory

Introduce a factory to create CameraSensor derived classes instances by
inspecting the sensor media entity name and provide a convenience macro
to register specialized sensor handlers.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
---
Changes since combined RFC:

- Fix indentation in REGISTER_CAMERA_SENSOR() macro

1 files changed, 3 insertions, 4 deletions

diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index abb21968..1a3e7938 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -1109,10 +1109,9 @@ int PipelineHandlerRkISP1::createCamera(MediaEntity *sensor)
 		std::make_unique<RkISP1CameraData>(this, &mainPath_,
 						   hasSelfPath_ ? &selfPath_ : nullptr);
 
-	data->sensor_ = std::make_unique<CameraSensor>(sensor);
-	ret = data->sensor_->init();
-	if (ret)
-		return ret;
+	data->sensor_ = CameraSensorFactoryBase::create(sensor);
+	if (!data->sensor_)
+		return -ENODEV;
 
 	/* Initialize the camera properties. */
 	data->properties_ = data->sensor_->properties();