1 files changed, 45 insertions, 0 deletions
diff --git a/src/ipa/rpi/controller/rpi/lux.h b/src/ipa/rpi/controller/rpi/lux.h
new file mode 100644
index 00000000..89411a54
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+++ b/src/ipa/rpi/controller/rpi/lux.h
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+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2019, Raspberry Pi Ltd
+ *
+ * lux.h - Lux control algorithm
+ */
+#pragma once
+
+#include <mutex>
+
+#include <libcamera/base/utils.h>
+
+#include "../lux_status.h"
+#include "../algorithm.h"
+
+/* This is our implementation of the "lux control algorithm". */
+
+namespace RPiController {
+
+class Lux : public Algorithm
+{
+public:
+	Lux(Controller *controller);
+	char const *name() const override;
+	int read(const libcamera::YamlObject &params) override;
+	void prepare(Metadata *imageMetadata) override;
+	void process(StatisticsPtr &stats, Metadata *imageMetadata) override;
+	void setCurrentAperture(double aperture);
+
+private:
+	/*
+	 * These values define the conditions of the reference image, against
+	 * which we compare the new image.
+	 */
+	libcamera::utils::Duration referenceShutterSpeed_;
+	double referenceGain_;
+	double referenceAperture_; /* units of 1/f */
+	double referenceY_; /* out of 65536 */
+	double referenceLux_;
+	double currentAperture_;
+	LuxStatus status_;
+	std::mutex mutex_;
+};
+
+} /* namespace RPiController */