libcamera/vivid.git - libcamera pipeline handler for VIVID

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author	Jacopo Mondi <jacopo@jmondi.org>	2020-11-23 10:01:35 +0100
committer	Jacopo Mondi <jacopo@jmondi.org>	2020-11-30 11:51:10 +0100
commit	20cf381c65df4c8cd45f00061f14f44e3780072e (patch)
tree	4938a7a4d6be0bb0ef12e1b9f6c6694e6ef6d36f /src/ipa/raspberrypi/controller/rpi/awb.cpp
parent	743329b642d17b314421a8119a17300db3d796b2 (diff)

libcamera: control_ids: Keep draft controls last

Let's try not to mix draft controls and regular controls. Draft controls are unstable by definition, and removing or adding them should not impact the enumeration of stable controls. Keep draft controls at the end of the control_ids.yaml file and add a comment to make clear where the draft controls section begins. Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

Diffstat (limited to 'src/ipa/raspberrypi/controller/rpi/awb.cpp')

0 files changed, 0 insertions, 0 deletions

/* SPDX-License-Identifier: BSD-2-Clause */ /* * Copyright (C) 2019, Raspberry Pi (Trading) Limited * * ccm.cpp - CCM (colour correction matrix) control algorithm */ #include <libcamera/base/log.h> #include "../awb_status.h" #include "../ccm_status.h" #include "../lux_status.h" #include "../metadata.hpp" #include "ccm.hpp" using namespace RPiController; using namespace libcamera; LOG_DEFINE_CATEGORY(RPiCcm) // This algorithm selects a CCM (Colour Correction Matrix) according to the // colour temperature estimated by AWB (interpolating between known matricies as // necessary). Additionally the amount of colour saturation can be controlled // both according to the current estimated lux level and according to a // saturation setting that is exposed to applications. #define NAME "rpi.ccm" Matrix::Matrix() { memset(m, 0, sizeof(m)); } Matrix::Matrix(double m0, double m1, double m2, double m3, double m4, double m5, double m6, double m7, double m8) { m[0][0] = m0, m[0][1] = m1, m[0][2] = m2, m[1][0] = m3, m[1][1] = m4, m[1][2] = m5, m[2][0] = m6, m[2][1] = m7, m[2][2] = m8; } void Matrix::Read(boost::property_tree::ptree const &params) { double *ptr = (double *)m; int n = 0; for (auto it = params.begin(); it != params.end(); it++) { if (n++ == 9) throw std::runtime_error("Ccm: too many values in CCM"); *ptr++ = it->second.get_value<double>(); } if (n < 9) throw std::runtime_error("Ccm: too few values in CCM"); } Ccm::Ccm(Controller *controller) : CcmAlgorithm(controller), saturation_(1.0) {} char const *Ccm::Name() const { return NAME; } void Ccm::Read(boost::property_tree::ptree const &params) { if (params.get_child_optional("saturation")) config_.saturation.Read(params.get_child("saturation")); for (auto &p : params.get_child("ccms")) { CtCcm ct_ccm; ct_ccm.ct = p.second.get<double>("ct"); ct_ccm.ccm.Read(p.second.get_child("ccm")); if (!config_.ccms.empty() && ct_ccm.ct <= config_.ccms.back().ct) throw std::runtime_error( "Ccm: CCM not in increasing colour temperature order"); config_.ccms.push_back(std::move(ct_ccm)); } if (config_.ccms.empty()) throw std::runtime_error("Ccm: no CCMs specified"); } void Ccm::SetSaturation(double saturation) { saturation_ = saturation; } void Ccm::Initialise() {} template<typename T> static bool get_locked(Metadata *metadata, std::string const &tag, T &value) { T *ptr = metadata->GetLocked<T>(tag); if (ptr == nullptr) return false; value = *ptr; return true; } Matrix calculate_ccm(std::vector<CtCcm> const &ccms, double ct) { if (ct <= ccms.front().ct) return ccms.front().ccm; else if (ct >= ccms.back().ct) return ccms.back().ccm; else { int i = 0; for (; ct > ccms[i].ct; i++) ; double lambda = (ct - ccms[i - 1].ct) / (ccms[i].ct - ccms[i - 1].ct); return lambda * ccms[i].ccm + (1.0 - lambda) * ccms[i - 1].ccm; } } Matrix apply_saturation(Matrix const &ccm, double saturation) { Matrix RGB2Y(0.299, 0.587, 0.114, -0.169, -0.331, 0.500, 0.500, -0.419, -0.081); Matrix Y2RGB(1.000, 0.000, 1.402, 1.000, -0.345, -0.714, 1.000, 1.771, 0.000); Matrix S(1, 0, 0, 0, saturation, 0, 0, 0, saturation); return Y2RGB * S * RGB2Y * ccm; } void Ccm::Prepare(Metadata *image_metadata) { bool awb_ok = false, lux_ok = false; struct AwbStatus awb = {}; awb.temperature_K = 4000; // in case no metadata struct LuxStatus lux = {}; lux.lux = 400; // in case no metadata { // grab mutex just once to get everything std::lock_guard<Metadata> lock(*image_metadata); awb_ok = get_locked(image_metadata, "awb.status", awb); lux_ok = get_locked(image_metadata, "lux.status", lux); } if (!awb_ok) LOG(RPiCcm, Warning) << "no colour temperature found"; if (!lux_ok) LOG(RPiCcm, Warning) << "no lux value found"; Matrix ccm = calculate_ccm(config_.ccms, awb.temperature_K); double saturation = saturation_; struct CcmStatus ccm_status; ccm_status.saturation = saturation; if (!config_.saturation.Empty()) saturation *= config_.saturation.Eval( config_.saturation.Domain().Clip(lux.lux)); ccm = apply_saturation(ccm, saturation); for (int j = 0; j < 3; j++) for (int i = 0; i < 3; i++) ccm_status.matrix[j * 3 + i] = std::max(-8.0, std::min(7.9999, ccm.m[j][i])); LOG(RPiCcm, Debug) << "colour temperature " << awb.temperature_K << "K"; LOG(RPiCcm, Debug) << "CCM: " << ccm_status.matrix[0] << " " << ccm_status.matrix[1] << " " << ccm_status.matrix[2] << " " << ccm_status.matrix[3] << " " << ccm_status.matrix[4] << " " << ccm_status.matrix[5] << " " << ccm_status.matrix[6] << " " << ccm_status.matrix[7] << " " << ccm_status.matrix[8]; image_metadata->Set("ccm.status", ccm_status); } // Register algorithm with the system. static Algorithm *Create(Controller *controller) { return (Algorithm *)new Ccm(controller); ; } static RegisterAlgorithm reg(NAME, &Create);


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