libcamera: camera: Provide a list of ControlInfo

Extend the Camera class to expose the controls it supports. Each
pipeline should generate a list of controls supported by each camera it
creates. These are represented by a ControlInfoMap, and an associated
ControlList of default values.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/libcamera/camera.cpp b/src/libcamera/camera.cpp
index 617ea99c..592dfd39 100644
--- a/src/libcamera/camera.cpp
+++ b/src/libcamera/camera.cpp
@@ -549,6 +549,18 @@ int Camera::release()
 }
 
 /**
+ * \brief Retrieve the list of controls supported by the camera
+ *
+ * Camera controls remain constant through the lifetime of the camera.
+ *
+ * \return A ControlInfoMap listing the controls supported by the camera
+ */
+const ControlInfoMap &Camera::controls()
+{
+	return pipe_->controls(this);
+}
+
+/**
  * \brief Retrieve all the camera's stream information
  *
  * Retrieve all of the camera's static stream information. The static