From patchwork Thu Jul 11 09:36:31 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Elder X-Patchwork-Id: 1651 Return-Path: Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id ABC2D61572 for ; Thu, 11 Jul 2019 11:36:40 +0200 (CEST) Received: from neptunite.amanokami.net (softbank126163157105.bbtec.net [126.163.157.105]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 3675A31C; Thu, 11 Jul 2019 11:36:38 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1562837800; bh=SOVn2LJVio2mtMOuZQCoF1zNkG3fVGFZUyc7t99RZQw=; h=From:To:Cc:Subject:Date:From; b=bReKmfCwdqOJO9cuV8ydGnLENfIrZOCCOOCdvKR3VIOulMLKnbz28PvKjhJX/Chi7 drkfTScA4E4BdmMEg4mtIpmeCZeKkY26ZVTJyEY6UrYuqkBivEo1+/QTR2eEf2VOl2 aNdR8qPUMznepV0QwfwWxdSyCrMTt41jl9KF2oXc= From: Paul Elder To: libcamera-devel@lists.libcamera.org Date: Thu, 11 Jul 2019 18:36:31 +0900 Message-Id: <20190711093632.22133-1-paul.elder@ideasonboard.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH 1/2] libcamera: logging: add logging API for applications X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Jul 2019 09:36:40 -0000 Currently the log file and the log level can only be set via environment variables, but applications may also want to set the log file and the log level at run time. Provide an API for this. Signed-off-by: Paul Elder --- include/libcamera/logging.h | 17 +++++++++++++++++ include/libcamera/meson.build | 1 + src/libcamera/log.cpp | 32 ++++++++++++++++++++++++++++++++ 3 files changed, 50 insertions(+) create mode 100644 include/libcamera/logging.h diff --git a/include/libcamera/logging.h b/include/libcamera/logging.h new file mode 100644 index 0000000..47c5e49 --- /dev/null +++ b/include/libcamera/logging.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2018, Google Inc. + * + * log.h - Logging infrastructure + */ +#ifndef __LIBCAMERA_LOGGING_H__ +#define __LIBCAMERA_LOGGING_H__ + +namespace libcamera { + +void logSetFile(const char *file); +void logSetLevel(const char *category, const char *level); + +} /* namespace libcamera */ + +#endif /* __LIBCAMERA_LOGGING_H__ */ diff --git a/include/libcamera/meson.build b/include/libcamera/meson.build index 972513f..920eb5f 100644 --- a/include/libcamera/meson.build +++ b/include/libcamera/meson.build @@ -9,6 +9,7 @@ libcamera_api = files([ 'geometry.h', 'ipa/ipa_interface.h', 'ipa/ipa_module_info.h', + 'logging.h', 'object.h', 'request.h', 'signal.h', diff --git a/src/libcamera/log.cpp b/src/libcamera/log.cpp index 0ba276e..e322b8f 100644 --- a/src/libcamera/log.cpp +++ b/src/libcamera/log.cpp @@ -69,6 +69,9 @@ private: void parseLogLevels(); static LogSeverity parseLogLevel(const std::string &level); + friend void logSetFile(const char *file); + friend void logSetLevel(const char *category, const char *level); + friend LogCategory; void registerCategory(LogCategory *category); void unregisterCategory(LogCategory *category); @@ -80,6 +83,35 @@ private: std::ostream *output_; }; +void logSetFile(const char *file) +{ + if (std::string(file).empty()) + return; + + Logger *logger = Logger::instance(); + std::ofstream &file_ = logger->file_; + file_.close(); + file_.open(file); + if (file_.good()) + logger->output_ = &file_; +} + +void logSetLevel(const char *category, const char *level) +{ + std::string cat(category); + std::string lev(level); + + /* Both the category and the level must be specified. */ + if (cat.empty() || lev.empty()) + return; + + LogSeverity severity = Logger::parseLogLevel(lev); + if (severity == LogInvalid) + return; + + Logger::instance()->levels_.push_back({ cat, severity }); +} + /** * \brief Retrieve the logger instance *