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diff --git a/src/ipa/ipu3/algorithms/algorithm.cpp b/src/ipa/ipu3/algorithms/algorithm.cpp
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+++ b/src/ipa/ipu3/algorithms/algorithm.cpp
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+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2021, Ideas On Board
+ *
+ * algorithm.cpp - IPU3 control algorithm interface
+ */
+
+#include "algorithm.h"
+
+/**
+ * \file algorithm.h
+ * \brief Algorithm common interface
+ */
+
+namespace libcamera {
+
+namespace ipa::ipu3 {
+
+/**
+ * \class Algorithm
+ * \brief The base class for all IPU3 algorithms
+ *
+ * The Algorithm class defines a standard interface for IPA algorithms. By
+ * abstracting algorithms, it makes possible the implementation of generic code
+ * to manage algorithms regardless of their specific type.
+ */
+
+} /* namespace ipa::ipu3 */
+
+} /* namespace libcamera */