1 files changed, 61 insertions, 0 deletions
diff --git a/src/ipa/ipu3/algorithms/agc.h b/src/ipa/ipu3/algorithms/agc.h
new file mode 100644
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--- /dev/null
+++ b/src/ipa/ipu3/algorithms/agc.h
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+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2021, Ideas On Board
+ *
+ * IPU3 AGC/AEC mean-based control algorithm
+ */
+
+#pragma once
+
+#include <linux/intel-ipu3.h>
+
+#include <libcamera/base/utils.h>
+
+#include <libcamera/geometry.h>
+
+#include "libipa/agc_mean_luminance.h"
+#include "libipa/histogram.h"
+
+#include "algorithm.h"
+
+namespace libcamera {
+
+struct IPACameraSensorInfo;
+
+namespace ipa::ipu3::algorithms {
+
+class Agc : public Algorithm, public AgcMeanLuminance
+{
+public:
+	Agc();
+	~Agc() = default;
+
+	int init(IPAContext &context, const YamlObject &tuningData) override;
+	int configure(IPAContext &context, const IPAConfigInfo &configInfo) override;
+	void process(IPAContext &context, const uint32_t frame,
+		     IPAFrameContext &frameContext,
+		     const ipu3_uapi_stats_3a *stats,
+		     ControlList &metadata) override;
+
+private:
+	double estimateLuminance(double gain) const override;
+	Histogram parseStatistics(const ipu3_uapi_stats_3a *stats,
+				  const ipu3_uapi_grid_config &grid);
+
+	utils::Duration minExposureTime_;
+	utils::Duration maxExposureTime_;
+
+	double minAnalogueGain_;
+	double maxAnalogueGain_;
+
+	uint32_t stride_;
+	double rGain_;
+	double gGain_;
+	double bGain_;
+	ipu3_uapi_grid_config bdsGrid_;
+	std::vector<std::tuple<uint8_t, uint8_t, uint8_t>> rgbTriples_;
+};
+
+} /* namespace ipa::ipu3::algorithms */
+
+} /* namespace libcamera */