diff options
| -rw-r--r-- | include/libcamera/camera.h | 7 | ||||
| -rw-r--r-- | src/libcamera/camera.cpp | 31 |
2 files changed, 38 insertions, 0 deletions
diff --git a/include/libcamera/camera.h b/include/libcamera/camera.h index efafb9e2..a2ded62d 100644 --- a/include/libcamera/camera.h +++ b/include/libcamera/camera.h @@ -10,6 +10,8 @@ #include <memory> #include <string> +#include <libcamera/signal.h> + namespace libcamera { class PipelineHandler; @@ -25,10 +27,15 @@ public: const std::string &name() const; + Signal<Camera *> disconnected; + private: Camera(PipelineHandler *pipe, const std::string &name); ~Camera(); + friend class PipelineHandler; + void disconnect(); + std::shared_ptr<PipelineHandler> pipe_; std::string name_; }; diff --git a/src/libcamera/camera.cpp b/src/libcamera/camera.cpp index 3a531c7e..9cec2892 100644 --- a/src/libcamera/camera.cpp +++ b/src/libcamera/camera.cpp @@ -34,6 +34,8 @@ namespace libcamera { +LOG_DECLARE_CATEGORY(Camera) + /** * \class Camera * \brief Camera device @@ -87,6 +89,18 @@ const std::string &Camera::name() const return name_; } +/** + * \var Camera::disconnected + * \brief Signal emitted when the camera is disconnected from the system + * + * This signal is emitted when libcamera detects that the cameera has been + * removed from the system. For hot-pluggable devices this is usually caused by + * physical device disconnection. The media device is passed as a parameter. + * + * As soon as this signal is emitted the camera instance will refuse all new + * application API calls by returning errors immediately. + */ + Camera::Camera(PipelineHandler *pipe, const std::string &name) : pipe_(pipe->shared_from_this()), name_(name) { @@ -96,4 +110,21 @@ Camera::~Camera() { } +/** + * \brief Notify camera disconnection + * + * This method is used to notify the camera instance that the underlying + * hardware has been unplugged. In response to the disconnection the camera + * instance notifies the application by emitting the #disconnected signal, and + * ensures that all new calls to the application-facing Camera API return an + * error immediately. + */ +void Camera::disconnect() +{ + LOG(Camera, Debug) << "Disconnecting camera " << name_; + + /** \todo Block API calls when they will be implemented. */ + disconnected.emit(this); +} + } /* namespace libcamera */ |