libcamera: ipa: Raspberry Pi IPA

Initial implementation of the Raspberry Pi (BCM2835) libcamera IPA and
associated libraries.

All code is licensed under the BSD-2-Clause terms.
Copyright (c) 2019-2020 Raspberry Pi Trading Ltd.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/src/ipa/raspberrypi/controller/rpi/sdn.hpp b/src/ipa/raspberrypi/controller/rpi/sdn.hpp
new file mode 100644
index 00000000..d48aab7e
--- /dev/null
+++ b/src/ipa/raspberrypi/controller/rpi/sdn.hpp
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2019, Raspberry Pi (Trading) Limited
+ *
+ * sdn.hpp - SDN (spatial denoise) control algorithm
+ */
+#pragma once
+
+#include "../algorithm.hpp"
+
+namespace RPi {
+
+// Algorithm to calculate correct spatial denoise (SDN) settings.
+
+class Sdn : public Algorithm
+{
+public:
+	Sdn(Controller *controller = NULL);
+	char const *Name() const override;
+	void Read(boost::property_tree::ptree const &params) override;
+	void Initialise() override;
+	void Prepare(Metadata *image_metadata) override;
+
+private:
+	double deviation_;
+	double strength_;
+};
+
+} // namespace RPi