ipa: rpi: Add new algorithms for PiSP

Add new CAC, HDR, Saturation and Tonemapping algorithms.

Add a new Denoise algorithm that handles spatial/temporal/colour denoise
through one interface. With this change, the old SDN algorithm is now
considered deprecated and a warning message will be displayed if it is
enabled.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/src/ipa/rpi/controller/rpi/denoise.h b/src/ipa/rpi/controller/rpi/denoise.h
new file mode 100644
index 00000000..88b37663
--- /dev/null
+++ b/src/ipa/rpi/controller/rpi/denoise.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2022, Raspberry Pi Ltd
+ *
+ * denoise.hpp - Denoise (spatial, colour, temporal) control algorithm
+ */
+#pragma once
+
+#include "algorithm.h"
+#include "denoise_algorithm.h"
+
+namespace RPiController {
+
+// Algorithm to calculate correct denoise settings.
+
+class Denoise : public DenoiseAlgorithm
+{
+public:
+	Denoise(Controller *controller);
+	char const *name() const override;
+	int read(const libcamera::YamlObject &params) override;
+	void initialise() override;
+	void switchMode(CameraMode const &cameraMode, Metadata *metadata) override;
+	void prepare(Metadata *imageMetadata) override;
+	void setMode(DenoiseMode mode) override;
+
+private:
+	double sdnDeviation_;
+	double sdnStrength_;
+	double sdnDeviation2_;
+	double sdnDeviationNoTdn_;
+	double sdnStrengthNoTdn_;
+	double sdnTdnBackoff_;
+	double cdnDeviation_;
+	double cdnStrength_;
+	double tdnDeviation_;
+	double tdnThreshold_;
+	DenoiseMode mode_;
+	bool tdnEnable_;
+	bool sdnEnable_;
+	bool cdnEnable_;
+
+	/* SDN parameters attenuate over time if TDN is running. */
+	double currentSdnDeviation_;
+	double currentSdnStrength_;
+	double currentSdnDeviation2_;
+};
+
+} // namespace RPiController