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Wed, 27 Mar 2024 17:28:06 +0000 From: Julien Vuillaumier To: libcamera-devel@lists.libcamera.org Cc: julien.vuillaumier@nxp.com, Jacopo Mondi Subject: [PATCH v3 1/2] libcamera: pipeline: Add a get factory by name helper Date: Wed, 27 Mar 2024 18:27:30 +0100 Message-Id: <20240327172731.434048-2-julien.vuillaumier@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240327172731.434048-1-julien.vuillaumier@nxp.com> References: <20240327172731.434048-1-julien.vuillaumier@nxp.com> X-ClientProxiedBy: AM0PR02CA0167.eurprd02.prod.outlook.com (2603:10a6:20b:28d::34) To AM9PR04MB8147.eurprd04.prod.outlook.com (2603:10a6:20b:3e0::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM9PR04MB8147:EE_|AM0PR04MB6913:EE_ X-MS-Office365-Filtering-Correlation-Id: 73554931-df74-44f5-3a5d-08dc4e834347 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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Signed-off-by: Julien Vuillaumier Reviewed-by: Jacopo Mondi Reviewed-by: Kieran Bingham --- include/libcamera/internal/pipeline_handler.h | 1 + src/libcamera/pipeline_handler.cpp | 22 +++++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/include/libcamera/internal/pipeline_handler.h b/include/libcamera/internal/pipeline_handler.h index c96944f4..19361a40 100644 --- a/include/libcamera/internal/pipeline_handler.h +++ b/include/libcamera/internal/pipeline_handler.h @@ -114,6 +114,7 @@ public: const std::string &name() const { return name_; } static std::vector &factories(); + static const PipelineHandlerFactoryBase *getFactoryByName(const std::string &name); private: static void registerType(PipelineHandlerFactoryBase *factory); diff --git a/src/libcamera/pipeline_handler.cpp b/src/libcamera/pipeline_handler.cpp index 29e0c98a..c926f454 100644 --- a/src/libcamera/pipeline_handler.cpp +++ b/src/libcamera/pipeline_handler.cpp @@ -794,6 +794,28 @@ std::vector &PipelineHandlerFactoryBase::factories return factories; } +/** + * \brief Return the factory for the pipeline handler with name \a name + * \param[in] name The pipeline handler name + * \return The factory of the pipeline with name \a name, or nullptr if not found + */ +const PipelineHandlerFactoryBase *PipelineHandlerFactoryBase::getFactoryByName(const std::string &name) +{ + const std::vector &factories = + PipelineHandlerFactoryBase::factories(); + + auto iter = std::find_if(factories.begin(), + factories.end(), + [&name](const PipelineHandlerFactoryBase *f) { + return f->name() == name; + }); + + if (iter != factories.end()) + return *iter; + + return nullptr; +} + /** * \class PipelineHandlerFactory * \brief Registration of PipelineHandler classes and creation of instances From patchwork Wed Mar 27 17:27:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julien Vuillaumier X-Patchwork-Id: 19819 Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id 6709BBD160 for ; 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It is a limitation when several pipelines can match the devices, and user has to select a specific pipeline. For this purpose, environment variable LIBCAMERA_PIPELINES_MATCH_LIST is created to give the option to define an ordered list of pipelines to match on. LIBCAMERA_PIPELINES_MATCH_LIST="[,[,...]]]" Example: LIBCAMERA_PIPELINES_MATCH_LIST="PipelineHandlerRkISP1,SimplePipelineHandler" Signed-off-by: Julien Vuillaumier Reviewed-by: Jacopo Mondi Reviewed-by: Kieran Bingham --- Documentation/environment_variables.rst | 8 ++++ include/libcamera/internal/camera_manager.h | 1 + src/libcamera/camera_manager.cpp | 53 ++++++++++++++++----- 3 files changed, 50 insertions(+), 12 deletions(-) diff --git a/Documentation/environment_variables.rst b/Documentation/environment_variables.rst index a9b230bc..c763435c 100644 --- a/Documentation/environment_variables.rst +++ b/Documentation/environment_variables.rst @@ -37,6 +37,14 @@ LIBCAMERA_IPA_MODULE_PATH Example value: ``${HOME}/.libcamera/lib:/opt/libcamera/vendor/lib`` +LIBCAMERA_PIPELINES_MATCH_LIST + Define an ordered list of pipeline names to be used to match the media + devices in the system. The pipeline handler names used to populate the + variable are the ones passed to the REGISTER_PIPELINE_HANDLER() macro in the + source code. + + Example value: ``PipelineHandlerRkISP1,SimplePipelineHandler`` + LIBCAMERA_RPI_CONFIG_FILE Define a custom configuration file to use in the Raspberry Pi pipeline handler. diff --git a/include/libcamera/internal/camera_manager.h b/include/libcamera/internal/camera_manager.h index 33ebe069..5694d40d 100644 --- a/include/libcamera/internal/camera_manager.h +++ b/include/libcamera/internal/camera_manager.h @@ -44,6 +44,7 @@ protected: private: int init(); void createPipelineHandlers(); + void pipelineFactoryMatch(const PipelineHandlerFactoryBase *factory); void cleanup() LIBCAMERA_TSA_EXCLUDES(mutex_); /* diff --git a/src/libcamera/camera_manager.cpp b/src/libcamera/camera_manager.cpp index 355f3ada..ce6607e1 100644 --- a/src/libcamera/camera_manager.cpp +++ b/src/libcamera/camera_manager.cpp @@ -99,16 +99,37 @@ int CameraManager::Private::init() void CameraManager::Private::createPipelineHandlers() { - CameraManager *const o = LIBCAMERA_O_PTR(); - /* * \todo Try to read handlers and order from configuration - * file and only fallback on all handlers if there is no - * configuration file. + * file and only fallback on environment variable or all handlers, if + * there is no configuration file. */ + const char *pipesList = + utils::secure_getenv("LIBCAMERA_PIPELINES_MATCH_LIST"); + if (pipesList) { + /* + * When a list of preferred pipelines is defined, iterate + * through the ordered list to match the enumerated devices. + */ + for (const auto &pipeName : utils::split(pipesList, ",")) { + const PipelineHandlerFactoryBase *factory; + factory = PipelineHandlerFactoryBase::getFactoryByName(pipeName); + if (!factory) + continue; + + LOG(Camera, Debug) + << "Found listed pipeline handler '" + << pipeName << "'"; + pipelineFactoryMatch(factory); + } + + return; + } + const std::vector &factories = PipelineHandlerFactoryBase::factories(); + /* Match all the registered pipeline handlers. */ for (const PipelineHandlerFactoryBase *factory : factories) { LOG(Camera, Debug) << "Found registered pipeline handler '" @@ -117,15 +138,23 @@ void CameraManager::Private::createPipelineHandlers() * Try each pipeline handler until it exhaust * all pipelines it can provide. */ - while (1) { - std::shared_ptr pipe = factory->create(o); - if (!pipe->match(enumerator_.get())) - break; + pipelineFactoryMatch(factory); + } +} - LOG(Camera, Debug) - << "Pipeline handler \"" << factory->name() - << "\" matched"; - } +void CameraManager::Private::pipelineFactoryMatch(const PipelineHandlerFactoryBase *factory) +{ + CameraManager *const o = LIBCAMERA_O_PTR(); + + /* Provide as many matching pipelines as possible. */ + while (1) { + std::shared_ptr pipe = factory->create(o); + if (!pipe->match(enumerator_.get())) + break; + + LOG(Camera, Debug) + << "Pipeline handler \"" << factory->name() + << "\" matched"; } }