libcamera: control_serializer: Add support for array controls

Add support for serializing and deserializing control values that store
arrays of values. The serialized format is extended to explicitly handle
arrays.

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, 5 insertions, 1 deletions

diff --git a/src/libcamera/include/control_serializer.h b/src/libcamera/include/control_serializer.h
index 55259913..b91d1315 100644
--- a/src/libcamera/include/control_serializer.h
+++ b/src/libcamera/include/control_serializer.h
@@ -41,7 +41,11 @@ private:
 	static void store(const ControlRange &range, ByteStreamBuffer &buffer);
 
 	template<typename T>
-	T load(ControlType type, ByteStreamBuffer &b);
+	ControlValue loadControlValue(ByteStreamBuffer &buffer, bool isArray,
+				      unsigned int count);
+	ControlValue loadControlValue(ControlType type, ByteStreamBuffer &buffer,
+				      bool isArray = false, unsigned int count = 1);
+	ControlRange loadControlRange(ControlType type, ByteStreamBuffer &buffer);
 
 	unsigned int serial_;
 	std::vector<std::unique_ptr<ControlId>> controlIds_;