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, 181 deletions

diff --git a/src/ipa/raspberrypi/controller/controller.cpp b/src/ipa/raspberrypi/controller/controller.cpp
deleted file mode 100644
index fa172113..00000000
--- a/src/ipa/raspberrypi/controller/controller.cpp
+++ /dev/null
@@ -1,181 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-/*
- * Copyright (C) 2019, Raspberry Pi Ltd
- *
- * controller.cpp - ISP controller
- */
-
-#include <assert.h>
-
-#include <libcamera/base/file.h>
-#include <libcamera/base/log.h>
-
-#include "libcamera/internal/yaml_parser.h"
-
-#include "algorithm.h"
-#include "controller.h"
-
-using namespace RPiController;
-using namespace libcamera;
-
-LOG_DEFINE_CATEGORY(RPiController)
-
-static const std::map<std::string, Controller::HardwareConfig> HardwareConfigMap = {
-	{
-		"bcm2835",
-		{
-			/*
-			 * There are only ever 15 AGC regions computed by the firmware
-			 * due to zoning, but the HW defines AGC_REGIONS == 16!
-			 */
-			.agcRegions = { 15 , 1 },
-			.agcZoneWeights = { 15 , 1 },
-			.awbRegions = { 16, 12 },
-			.focusRegions = { 4, 3 },
-			.numHistogramBins = 128,
-			.numGammaPoints = 33,
-			.pipelineWidth = 13
-		}
-	},
-};
-
-Controller::Controller()
-	: switchModeCalled_(false)
-{
-}
-
-Controller::~Controller() {}
-
-int Controller::read(char const *filename)
-{
-	File file(filename);
-	if (!file.open(File::OpenModeFlag::ReadOnly)) {
-		LOG(RPiController, Warning)
-			<< "Failed to open tuning file '" << filename << "'";
-		return -EINVAL;
-	}
-
-	std::unique_ptr<YamlObject> root = YamlParser::parse(file);
-	double version = (*root)["version"].get<double>(1.0);
-	target_ = (*root)["target"].get<std::string>("bcm2835");
-
-	if (version < 2.0) {
-		LOG(RPiController, Warning)
-			<< "This format of the tuning file will be deprecated soon!"
-			<< " Please use the convert_tuning.py utility to update to version 2.0.";
-
-		for (auto const &[key, value] : root->asDict()) {
-			int ret = createAlgorithm(key, value);
-			if (ret)
-				return ret;
-		}
-	} else if (version < 3.0) {
-		if (!root->contains("algorithms")) {
-			LOG(RPiController, Error)
-				<< "Tuning file " << filename
-				<< " does not have an \"algorithms\" list!";
-			return -EINVAL;
-		}
-
-		for (auto const &rootAlgo : (*root)["algorithms"].asList())
-			for (auto const &[key, value] : rootAlgo.asDict()) {
-				int ret = createAlgorithm(key, value);
-				if (ret)
-					return ret;
-			}
-	} else {
-		LOG(RPiController, Error)
-			<< "Unrecognised version " << version
-			<< " for the tuning file " << filename;
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-int Controller::createAlgorithm(const std::string &name, const YamlObject &params)
-{
-	auto it = getAlgorithms().find(name);
-	if (it == getAlgorithms().end()) {
-		LOG(RPiController, Warning)
-			<< "No algorithm found for \"" << name << "\"";
-		return 0;
-	}
-
-	Algorithm *algo = (*it->second)(this);
-	int ret = algo->read(params);
-	if (ret)
-		return ret;
-
-	algorithms_.push_back(AlgorithmPtr(algo));
-	return 0;
-}
-
-void Controller::initialise()
-{
-	for (auto &algo : algorithms_)
-		algo->initialise();
-}
-
-void Controller::switchMode(CameraMode const &cameraMode, Metadata *metadata)
-{
-	for (auto &algo : algorithms_)
-		algo->switchMode(cameraMode, metadata);
-	switchModeCalled_ = true;
-}
-
-void Controller::prepare(Metadata *imageMetadata)
-{
-	assert(switchModeCalled_);
-	for (auto &algo : algorithms_)
-		algo->prepare(imageMetadata);
-}
-
-void Controller::process(StatisticsPtr stats, Metadata *imageMetadata)
-{
-	assert(switchModeCalled_);
-	for (auto &algo : algorithms_)
-		algo->process(stats, imageMetadata);
-}
-
-Metadata &Controller::getGlobalMetadata()
-{
-	return globalMetadata_;
-}
-
-Algorithm *Controller::getAlgorithm(std::string const &name) const
-{
-	/*
-	 * The passed name must be the entire algorithm name, or must match the
-	 * last part of it with a period (.) just before.
-	 */
-	size_t nameLen = name.length();
-	for (auto &algo : algorithms_) {
-		char const *algoName = algo->name();
-		size_t algoNameLen = strlen(algoName);
-		if (algoNameLen >= nameLen &&
-		    strcasecmp(name.c_str(),
-			       algoName + algoNameLen - nameLen) == 0 &&
-		    (nameLen == algoNameLen ||
-		     algoName[algoNameLen - nameLen - 1] == '.'))
-			return algo.get();
-	}
-	return nullptr;
-}
-
-const std::string &Controller::getTarget() const
-{
-	return target_;
-}
-
-const Controller::HardwareConfig &Controller::getHardwareConfig() const
-{
-	auto cfg = HardwareConfigMap.find(getTarget());
-
-	/*
-	 * This really should not happen, the IPA ought to validate the target
-	 * on initialisation.
-	 */
-	ASSERT(cfg != HardwareConfigMap.end());
-	return cfg->second;
-}