diff options
author | Julien Vuillaumier <julien.vuillaumier@nxp.com> | 2024-05-03 16:49:19 +0200 |
---|---|---|
committer | Kieran Bingham <kieran.bingham@ideasonboard.com> | 2024-05-14 23:22:55 +0100 |
commit | d258025da7d7d555f9aa11dba700cf52409b6759 (patch) | |
tree | b6da8dc1965f3649fc457e7165d17f6abd09c270 /src | |
parent | 353ccef1437df142059da12dd154e426ce5464ee (diff) |
libcamera: camera_manager: Add environment variable to order pipelines match
To match the enumerated media devices, each registered pipeline handler
is used in no specific order. 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="<name1>[,<name2>[,<name3>...]]]"
Example:
LIBCAMERA_PIPELINES_MATCH_LIST="rkisp1,simple"
Signed-off-by: Julien Vuillaumier <julien.vuillaumier@nxp.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Diffstat (limited to 'src')
-rw-r--r-- | src/libcamera/camera_manager.cpp | 53 |
1 files changed, 41 insertions, 12 deletions
diff --git a/src/libcamera/camera_manager.cpp b/src/libcamera/camera_manager.cpp index 8837e6f8..95a9e326 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<PipelineHandlerFactoryBase *> &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<PipelineHandler> 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<PipelineHandler> pipe = factory->create(o); + if (!pipe->match(enumerator_.get())) + break; + + LOG(Camera, Debug) + << "Pipeline handler \"" << factory->name() + << "\" matched"; } } |