diff options
author | Naushir Patuck <naush@raspberrypi.com> | 2023-05-03 13:20:27 +0100 |
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committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2023-05-04 20:47:40 +0300 |
commit | 726e9274ea95fa46352556d340c5793a8da51fcd (patch) | |
tree | 80f6adcdbf744f9317e09eff3e80c602b384a753 /src/ipa/rpi/controller/rpi/lux.cpp | |
parent | 46aefed208fef4bc8d6f6e8882b92b9af710a60b (diff) |
pipeline: ipa: raspberrypi: Refactor and move the Raspberry Pi code
Split the Raspberry Pi pipeline handler and IPA source code into common
and VC4/BCM2835 specific file structures.
For the pipeline handler, the common code files now live in
src/libcamera/pipeline/rpi/common/
and the VC4-specific files in src/libcamera/pipeline/rpi/vc4/.
For the IPA, the common code files now live in
src/ipa/rpi/{cam_helper,controller}/
and the vc4 specific files in src/ipa/rpi/vc4/. With this change, the
camera tuning files are now installed under share/libcamera/ipa/rpi/vc4/.
To build the pipeline and IPA, the meson configuration options have now
changed from "raspberrypi" to "rpi/vc4":
meson setup build -Dipas=rpi/vc4 -Dpipelines=rpi/vc4
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'src/ipa/rpi/controller/rpi/lux.cpp')
-rw-r--r-- | src/ipa/rpi/controller/rpi/lux.cpp | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/ipa/rpi/controller/rpi/lux.cpp b/src/ipa/rpi/controller/rpi/lux.cpp new file mode 100644 index 00000000..06625f3a --- /dev/null +++ b/src/ipa/rpi/controller/rpi/lux.cpp @@ -0,0 +1,115 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ +/* + * Copyright (C) 2019, Raspberry Pi Ltd + * + * lux.cpp - Lux control algorithm + */ +#include <math.h> + +#include <libcamera/base/log.h> + +#include "../device_status.h" + +#include "lux.h" + +using namespace RPiController; +using namespace libcamera; +using namespace std::literals::chrono_literals; + +LOG_DEFINE_CATEGORY(RPiLux) + +#define NAME "rpi.lux" + +Lux::Lux(Controller *controller) + : Algorithm(controller) +{ + /* + * Put in some defaults as there will be no meaningful values until + * Process has run. + */ + status_.aperture = 1.0; + status_.lux = 400; +} + +char const *Lux::name() const +{ + return NAME; +} + +int Lux::read(const libcamera::YamlObject ¶ms) +{ + auto value = params["reference_shutter_speed"].get<double>(); + if (!value) + return -EINVAL; + referenceShutterSpeed_ = *value * 1.0us; + + value = params["reference_gain"].get<double>(); + if (!value) + return -EINVAL; + referenceGain_ = *value; + + referenceAperture_ = params["reference_aperture"].get<double>(1.0); + + value = params["reference_Y"].get<double>(); + if (!value) + return -EINVAL; + referenceY_ = *value; + + value = params["reference_lux"].get<double>(); + if (!value) + return -EINVAL; + referenceLux_ = *value; + + currentAperture_ = referenceAperture_; + return 0; +} + +void Lux::setCurrentAperture(double aperture) +{ + currentAperture_ = aperture; +} + +void Lux::prepare(Metadata *imageMetadata) +{ + std::unique_lock<std::mutex> lock(mutex_); + imageMetadata->set("lux.status", status_); +} + +void Lux::process(StatisticsPtr &stats, Metadata *imageMetadata) +{ + DeviceStatus deviceStatus; + if (imageMetadata->get("device.status", deviceStatus) == 0) { + double currentGain = deviceStatus.analogueGain; + double currentAperture = deviceStatus.aperture.value_or(currentAperture_); + double currentY = stats->yHist.interQuantileMean(0, 1); + double gainRatio = referenceGain_ / currentGain; + double shutterSpeedRatio = + referenceShutterSpeed_ / deviceStatus.shutterSpeed; + double apertureRatio = referenceAperture_ / currentAperture; + double yRatio = currentY * (65536 / stats->yHist.bins()) / referenceY_; + double estimatedLux = shutterSpeedRatio * gainRatio * + apertureRatio * apertureRatio * + yRatio * referenceLux_; + LuxStatus status; + status.lux = estimatedLux; + status.aperture = currentAperture; + LOG(RPiLux, Debug) << ": estimated lux " << estimatedLux; + { + std::unique_lock<std::mutex> lock(mutex_); + status_ = status; + } + /* + * Overwrite the metadata here as well, so that downstream + * algorithms get the latest value. + */ + imageMetadata->set("lux.status", status); + } else + LOG(RPiLux, Warning) << ": no device metadata"; +} + +/* Register algorithm with the system. */ +static Algorithm *create(Controller *controller) +{ + return (Algorithm *)new Lux(controller); +} +static RegisterAlgorithm reg(NAME, &create); |