diff options
| -rw-r--r-- | src/libcamera/camera_manager.cpp | 56 |
1 files changed, 34 insertions, 22 deletions
diff --git a/src/libcamera/camera_manager.cpp b/src/libcamera/camera_manager.cpp index 91ef6753..2b8ef2ce 100644 --- a/src/libcamera/camera_manager.cpp +++ b/src/libcamera/camera_manager.cpp @@ -15,30 +15,42 @@ /** * \file camera_manager.h - * \brief Manage all cameras handled by libcamera - * - * The responsibility of the camera manager is to control the lifetime - * management of objects provided by libcamera. - * - * When a user wish to interact with libcamera it creates and starts a - * CameraManager object. Once confirmed the camera manager is running - * the application can list all cameras detected by the library, get - * one or more of the cameras and interact with them. - * - * When the user is done with the camera it should be returned to the - * camera manager. Once all cameras are returned to the camera manager - * the user is free to stop the manager. - * - * \todo Add ability to add and remove media devices based on - * hot-(un)plug events coming from the device enumerator. - * - * \todo Add interface to register a notification callback to the user - * to be able to inform it new cameras have been hot-plugged or - * cameras have been removed due to hot-unplug. + * \brief The camera manager */ namespace libcamera { +/** + * \class CameraManager + * \brief Provide access and manage all cameras in the system + * + * The camera manager is the entry point to libcamera. It enumerates devices, + * associates them with pipeline managers, and provides access to the cameras + * in the system to applications. The manager owns all Camera objects and + * handles hot-plugging and hot-unplugging to manage the lifetime of cameras. + * + * To interact with libcamera, an application retrieves the camera manager + * instance with CameraManager::instance(). The manager is initially stopped, + * and shall be configured before being started. In particular a custom event + * dispatcher shall be installed if needed with + * CameraManager::setEventDispatcher(). + * + * Once the camera manager is configured, it shall be started with start(). + * This will enumerate all the cameras present in the system, which can then be + * listed with list() and retrieved with get(). + * + * Cameras are reference-counted, and shall be returned to the camera manager + * with Camera::put() after being used. Once all cameras have been returned to + * the manager, it can be stopped with stop(). + * + * \todo Add ability to add and remove media devices based on hot-(un)plug + * events coming from the device enumerator. + * + * \todo Add interface to register a notification callback to the user to be + * able to inform it new cameras have been hot-plugged or cameras have been + * removed due to hot-unplug. + */ + CameraManager::CameraManager() : enumerator_(nullptr), dispatcher_(nullptr) { @@ -57,7 +69,7 @@ CameraManager::~CameraManager() * interact with cameras in the system until either the camera manager * is stopped or the camera is unplugged from the system. * - * \return true on successful start false otherwise + * \return 0 on successful start, or a negative error code otherwise */ int CameraManager::start() { @@ -102,7 +114,7 @@ int CameraManager::start() /** * \brief Stop the camera manager * - * Before stopping the camera manger the caller is responsible for making + * Before stopping the camera manager the caller is responsible for making * sure all cameras provided by the manager are returned to the manager. * * After the manager has been stopped no resource provided by the camera |