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diff --git a/src/ipa/raspberrypi/controller/ccm_algorithm.hpp b/src/ipa/raspberrypi/controller/ccm_algorithm.hpp
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+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2019, Raspberry Pi (Trading) Limited
+ *
+ * ccm_algorithm.hpp - CCM (colour correction matrix) control algorithm interface
+ */
+#pragma once
+
+#include "algorithm.hpp"
+
+namespace RPi {
+
+class CcmAlgorithm : public Algorithm
+{
+public:
+ CcmAlgorithm(Controller *controller) : Algorithm(controller) {}
+ // A CCM algorithm must provide the following:
+ virtual void SetSaturation(double saturation) = 0;
+};
+
+} // namespace RPi