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>

1 files changed, 0 insertions, 115 deletions

diff --git a/src/ipa/raspberrypi/controller/rpi/lux.cpp b/src/ipa/raspberrypi/controller/rpi/lux.cpp
deleted file mode 100644
index 06625f3a..00000000
--- a/src/ipa/raspberrypi/controller/rpi/lux.cpp
+++ /dev/null
@@ -1,115 +0,0 @@
-/* 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 &params)
-{
-	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);