1 files changed, 106 insertions, 0 deletions
diff --git a/src/ipa/libipa/algorithm.h b/src/ipa/libipa/algorithm.h
new file mode 100644
index 00000000..9a19dbd6
--- /dev/null
+++ b/src/ipa/libipa/algorithm.h
@@ -0,0 +1,106 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2021, Ideas On Board
+ *
+ * ISP control algorithm interface
+ */
+#pragma once
+
+#include <memory>
+#include <stdint.h>
+#include <string>
+
+#include <libcamera/controls.h>
+
+namespace libcamera {
+
+class YamlObject;
+
+namespace ipa {
+
+template<typename _Module>
+class Algorithm
+{
+public:
+	using Module = _Module;
+
+	virtual ~Algorithm() {}
+
+	virtual int init([[maybe_unused]] typename Module::Context &context,
+			 [[maybe_unused]] const YamlObject &tuningData)
+	{
+		return 0;
+	}
+
+	virtual int configure([[maybe_unused]] typename Module::Context &context,
+			      [[maybe_unused]] const typename Module::Config &configInfo)
+	{
+		return 0;
+	}
+
+	virtual void queueRequest([[maybe_unused]] typename Module::Context &context,
+				  [[maybe_unused]] const uint32_t frame,
+				  [[maybe_unused]] typename Module::FrameContext &frameContext,
+				  [[maybe_unused]] const ControlList &controls)
+	{
+	}
+
+	virtual void prepare([[maybe_unused]] typename Module::Context &context,
+			     [[maybe_unused]] const uint32_t frame,
+			     [[maybe_unused]] typename Module::FrameContext &frameContext,
+			     [[maybe_unused]] typename Module::Params *params)
+	{
+	}
+
+	virtual void process([[maybe_unused]] typename Module::Context &context,
+			     [[maybe_unused]] const uint32_t frame,
+			     [[maybe_unused]] typename Module::FrameContext &frameContext,
+			     [[maybe_unused]] const typename Module::Stats *stats,
+			     [[maybe_unused]] ControlList &metadata)
+	{
+	}
+};
+
+template<typename _Module>
+class AlgorithmFactoryBase
+{
+public:
+	AlgorithmFactoryBase(const char *name)
+		: name_(name)
+	{
+		_Module::registerAlgorithm(this);
+	}
+
+	virtual ~AlgorithmFactoryBase() = default;
+
+	const std::string &name() const { return name_; }
+
+	virtual std::unique_ptr<Algorithm<_Module>> create() const = 0;
+
+private:
+	std::string name_;
+};
+
+template<typename _Algorithm>
+class AlgorithmFactory : public AlgorithmFactoryBase<typename _Algorithm::Module>
+{
+public:
+	AlgorithmFactory(const char *name)
+		: AlgorithmFactoryBase<typename _Algorithm::Module>(name)
+	{
+	}
+
+	~AlgorithmFactory() = default;
+
+	std::unique_ptr<Algorithm<typename _Algorithm::Module>> create() const override
+	{
+		return std::make_unique<_Algorithm>();
+	}
+};
+
+#define REGISTER_IPA_ALGORITHM(algorithm, name) \
+static AlgorithmFactory<algorithm> global_##algorithm##Factory(name);
+
+} /* namespace ipa */
+
+} /* namespace libcamera */