From 0db2c8dc75e466e7648dc1b95380495c6a126349 Mon Sep 17 00:00:00 2001 From: Naushir Patuck Date: Sun, 3 May 2020 16:48:42 +0100 Subject: 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 Acked-by: Laurent Pinchart Signed-off-by: Laurent Pinchart --- src/ipa/raspberrypi/controller/rpi/sdn.cpp | 63 ++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 src/ipa/raspberrypi/controller/rpi/sdn.cpp (limited to 'src/ipa/raspberrypi/controller/rpi/sdn.cpp') diff --git a/src/ipa/raspberrypi/controller/rpi/sdn.cpp b/src/ipa/raspberrypi/controller/rpi/sdn.cpp new file mode 100644 index 00000000..28d9d983 --- /dev/null +++ b/src/ipa/raspberrypi/controller/rpi/sdn.cpp @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ +/* + * Copyright (C) 2019, Raspberry Pi (Trading) Limited + * + * sdn.cpp - SDN (spatial denoise) control algorithm + */ + +#include "../noise_status.h" +#include "../sdn_status.h" + +#include "sdn.hpp" + +using namespace RPi; + +// Calculate settings for the spatial denoise block using the noise profile in +// the image metadata. + +#define NAME "rpi.sdn" + +Sdn::Sdn(Controller *controller) + : Algorithm(controller) +{ +} + +char const *Sdn::Name() const +{ + return NAME; +} + +void Sdn::Read(boost::property_tree::ptree const ¶ms) +{ + deviation_ = params.get("deviation", 3.2); + strength_ = params.get("strength", 0.75); +} + +void Sdn::Initialise() {} + +void Sdn::Prepare(Metadata *image_metadata) +{ + struct NoiseStatus noise_status = {}; + noise_status.noise_slope = 3.0; // in case no metadata + if (image_metadata->Get("noise.status", noise_status) != 0) + RPI_WARN("Sdn: no noise profile found"); + RPI_LOG("Noise profile: constant " << noise_status.noise_constant + << " slope " + << noise_status.noise_slope); + struct SdnStatus status; + status.noise_constant = noise_status.noise_constant * deviation_; + status.noise_slope = noise_status.noise_slope * deviation_; + status.strength = strength_; + image_metadata->Set("sdn.status", status); + RPI_LOG("Sdn: programmed constant " << status.noise_constant + << " slope " << status.noise_slope + << " strength " + << status.strength); +} + +// Register algorithm with the system. +static Algorithm *Create(Controller *controller) +{ + return (Algorithm *)new Sdn(controller); +} +static RegisterAlgorithm reg(NAME, &Create); -- cgit v1.2.1