libcamera: controls: Add support for float controls

Add support for float values in Control<> and ControlValue classes.

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

1 files changed, 12 insertions, 0 deletions

diff --git a/src/libcamera/control_serializer.cpp b/src/libcamera/control_serializer.cpp
index 2b66ab97..5feaaa96 100644
--- a/src/libcamera/control_serializer.cpp
+++ b/src/libcamera/control_serializer.cpp
@@ -165,6 +165,12 @@ void ControlSerializer::store(const ControlValue &value,
 		break;
 	}
 
+	case ControlTypeFloat: {
+		float data = value.get<float>();
+		buffer.write(&data);
+		break;
+	}
+
 	default:
 		break;
 	}
@@ -337,6 +343,12 @@ ControlValue ControlSerializer::load<ControlValue>(ControlType type,
 		return ControlValue(value);
 	}
 
+	case ControlTypeFloat: {
+		float value;
+		b.read(&value);
+		return ControlValue(value);
+	}
+
 	default:
 		return ControlValue();
 	}