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Diffstat (limited to 'src/ipa/rpi/controller/controller.cpp')
| -rw-r--r-- | src/ipa/rpi/controller/controller.cpp | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/src/ipa/rpi/controller/controller.cpp b/src/ipa/rpi/controller/controller.cpp new file mode 100644 index 00000000..5ca98b98 --- /dev/null +++ b/src/ipa/rpi/controller/controller.cpp @@ -0,0 +1,220 @@ +/* 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; +using namespace std::literals::chrono_literals; + +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 }, + .cacRegions = { 0, 0 }, + .focusRegions = { 4, 3 }, + .numHistogramBins = 128, + .numGammaPoints = 33, + .pipelineWidth = 13, + .statsInline = false, + .minPixelProcessingTime = 0s, + } + }, + { + "pisp", + { + .agcRegions = { 0, 0 }, + .agcZoneWeights = { 15, 15 }, + .awbRegions = { 32, 32 }, + .cacRegions = { 8, 8 }, + .focusRegions = { 8, 8 }, + .numHistogramBins = 1024, + .numGammaPoints = 64, + .pipelineWidth = 16, + .statsInline = true, + + /* + * The constraint below is on the rate of pixels going + * from CSI2 peripheral to ISP-FE (400Mpix/s, plus tiny + * overheads per scanline, for which 380Mpix/s is a + * conservative bound). + * + * There is a 64kbit data FIFO before the bottleneck, + * which means that in all reasonable cases the + * constraint applies at a timescale >= 1 scanline, so + * adding horizontal blanking can prevent loss. + * + * If the backlog were to grow beyond 64kbit during a + * single scanline, there could still be loss. This + * could happen using 4 lanes at 1.5Gbps at 10bpp with + * frames wider than ~16,000 pixels. + */ + .minPixelProcessingTime = 1.0us / 380, + } + }, +}; + +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); + if (!root) + return -EINVAL; + + 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 ¶ms) +{ + 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; +} |