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, 199 deletions

diff --git a/src/ipa/raspberrypi/controller/rpi/ccm.cpp b/src/ipa/raspberrypi/controller/rpi/ccm.cpp
deleted file mode 100644
index 2e2e6664..00000000
--- a/src/ipa/raspberrypi/controller/rpi/ccm.cpp
+++ /dev/null
@@ -1,199 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-/*
- * Copyright (C) 2019, Raspberry Pi Ltd
- *
- * 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.h"
-
-#include "ccm.h"
-
-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;
-}
-int Matrix::read(const libcamera::YamlObject &params)
-{
-	double *ptr = (double *)m;
-
-	if (params.size() != 9) {
-		LOG(RPiCcm, Error) << "Wrong number of values in CCM";
-		return -EINVAL;
-	}
-
-	for (const auto &param : params.asList()) {
-		auto value = param.get<double>();
-		if (!value)
-			return -EINVAL;
-		*ptr++ = *value;
-	}
-
-	return 0;
-}
-
-Ccm::Ccm(Controller *controller)
-	: CcmAlgorithm(controller), saturation_(1.0) {}
-
-char const *Ccm::name() const
-{
-	return NAME;
-}
-
-int Ccm::read(const libcamera::YamlObject &params)
-{
-	int ret;
-
-	if (params.contains("saturation")) {
-		ret = config_.saturation.read(params["saturation"]);
-		if (ret)
-			return ret;
-	}
-
-	for (auto &p : params["ccms"].asList()) {
-		auto value = p["ct"].get<double>();
-		if (!value)
-			return -EINVAL;
-
-		CtCcm ctCcm;
-		ctCcm.ct = *value;
-		ret = ctCcm.ccm.read(p["ccm"]);
-		if (ret)
-			return ret;
-
-		if (!config_.ccms.empty() && ctCcm.ct <= config_.ccms.back().ct) {
-			LOG(RPiCcm, Error)
-				<< "CCM not in increasing colour temperature order";
-			return -EINVAL;
-		}
-
-		config_.ccms.push_back(std::move(ctCcm));
-	}
-
-	if (config_.ccms.empty()) {
-		LOG(RPiCcm, Error) << "No CCMs specified";
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-void Ccm::setSaturation(double saturation)
-{
-	saturation_ = saturation;
-}
-
-void Ccm::initialise()
-{
-}
-
-template<typename T>
-static bool getLocked(Metadata *metadata, std::string const &tag, T &value)
-{
-	T *ptr = metadata->getLocked<T>(tag);
-	if (ptr == nullptr)
-		return false;
-	value = *ptr;
-	return true;
-}
-
-Matrix calculateCcm(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 applySaturation(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 *imageMetadata)
-{
-	bool awbOk = false, luxOk = false;
-	struct AwbStatus awb = {};
-	awb.temperatureK = 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(*imageMetadata);
-		awbOk = getLocked(imageMetadata, "awb.status", awb);
-		luxOk = getLocked(imageMetadata, "lux.status", lux);
-	}
-	if (!awbOk)
-		LOG(RPiCcm, Warning) << "no colour temperature found";
-	if (!luxOk)
-		LOG(RPiCcm, Warning) << "no lux value found";
-	Matrix ccm = calculateCcm(config_.ccms, awb.temperatureK);
-	double saturation = saturation_;
-	struct CcmStatus ccmStatus;
-	ccmStatus.saturation = saturation;
-	if (!config_.saturation.empty())
-		saturation *= config_.saturation.eval(
-			config_.saturation.domain().clip(lux.lux));
-	ccm = applySaturation(ccm, saturation);
-	for (int j = 0; j < 3; j++)
-		for (int i = 0; i < 3; i++)
-			ccmStatus.matrix[j * 3 + i] =
-				std::max(-8.0, std::min(7.9999, ccm.m[j][i]));
-	LOG(RPiCcm, Debug)
-		<< "colour temperature " << awb.temperatureK << "K";
-	LOG(RPiCcm, Debug)
-		<< "CCM: " << ccmStatus.matrix[0] << " " << ccmStatus.matrix[1]
-		<< " " << ccmStatus.matrix[2] << "     "
-		<< ccmStatus.matrix[3] << " " << ccmStatus.matrix[4]
-		<< " " << ccmStatus.matrix[5] << "     "
-		<< ccmStatus.matrix[6] << " " << ccmStatus.matrix[7]
-		<< " " << ccmStatus.matrix[8];
-	imageMetadata->set("ccm.status", ccmStatus);
-}
-
-/* Register algorithm with the system. */
-static Algorithm *create(Controller *controller)
-{
-	return (Algorithm *)new Ccm(controller);
-	;
-}
-static RegisterAlgorithm reg(NAME, &create);