/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2019, Google Inc. * * ipa_vimc.cpp - Vimc Image Processing Algorithm module */ #include <libcamera/ipa/vimc.h> #include <fcntl.h> #include <string.h> #include <sys/stat.h> #include <unistd.h> #include <iostream> #include <libcamera/ipa/ipa_interface.h> #include <libcamera/ipa/ipa_module_info.h> #include <libipa/ipa_interface_wrapper.h> #include "libcamera/internal/file.h" #include "libcamera/internal/log.h" namespace libcamera { LOG_DEFINE_CATEGORY(IPAVimc) class IPAVimc : public IPAInterface { public: IPAVimc(); ~IPAVimc(); int init(const IPASettings &settings) override; int start(const IPAOperationData &data, IPAOperationData *result) override; void stop() override; void configure([[maybe_unused]] const CameraSensorInfo &sensorInfo, [[maybe_unused]] const std::map<unsigned int, IPAStream> &streamConfig, [[maybe_unused]] const std::map<unsigned int, const ControlInfoMap &> &entityControls, [[maybe_unused]] const IPAOperationData &ipaConfig, [[maybe_unused]] IPAOperationData *result) override {} void mapBuffers([[maybe_unused]] const std::vector<IPABuffer> &buffers) override {} void unmapBuffers([[maybe_unused]] const std::vector<unsigned int> &ids) override {} void processEvent([[maybe_unused]] const IPAOperationData &event) override {} private: void initTrace(); void trace(enum IPAOperationCode operation); int fd_; }; IPAVimc::IPAVimc() : fd_(-1) { initTrace(); } IPAVimc::~IPAVimc() { if (fd_ != -1) ::close(fd_); } int IPAVimc::init(const IPASettings &settings) { trace(IPAOperationInit); LOG(IPAVimc, Debug) << "initializing vimc IPA with configuration file " << settings.configurationFile; File conf(settings.configurationFile); if (!conf.open(File::ReadOnly)) { LOG(IPAVimc, Error) << "Failed to open configuration file"; return -EINVAL; } return 0; } int IPAVimc::start([[maybe_unused]] const IPAOperationData &data, [[maybe_unused]] IPAOperationData *result) { trace(IPAOperationStart); LOG(IPAVimc, Debug) << "start vimc IPA!"; return 0; } void IPAVimc::stop() { trace(IPAOperationStop); LOG(IPAVimc, Debug) << "stop vimc IPA!"; } void IPAVimc::initTrace() { struct stat fifoStat; int ret = stat(VIMC_IPA_FIFO_PATH, &fifoStat); if (ret) return; ret = ::open(VIMC_IPA_FIFO_PATH, O_WRONLY); if (ret < 0) { ret = errno; LOG(IPAVimc, Error) << "Failed to open vimc IPA test FIFO: " << strerror(ret); return; } fd_ = ret; } void IPAVimc::trace(enum IPAOperationCode operation) { if (fd_ < 0) return; int ret = ::write(fd_, &operation, sizeof(operation)); if (ret < 0) { ret = errno; LOG(IPAVimc, Error) << "Failed to write to vimc IPA test FIFO: " << strerror(ret); } } /* * External IPA module interface */ extern "C" { const struct IPAModuleInfo ipaModuleInfo = { IPA_MODULE_API_VERSION, 0, "PipelineHandlerVimc", "vimc", }; struct ipa_context *ipaCreate() { return new IPAInterfaceWrapper(std::make_unique<IPAVimc>()); } } } /* namespace libcamera */