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libcamera: Add event notification infrastructure

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Add three new classes, EventDispatcher, EventNotifier and Timer, that
define APIs for file descriptor event notification and timers. The
implementation of the EventDispatcher is meant to be provided to
libcamera by the application.

The event dispatcher is integrated twith the camera manager to implement
automatic registration of timers and events.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
This commit is contained in:
Laurent Pinchart 2019-01-04 21:19:38 +02:00
parent d0fd42a4fd
commit 1a57bcb8d1
11 changed files with 495 additions and 1 deletions
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7
include/libcamera/camera_manager.h
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@ -14,6 +14,7 @@ namespace libcamera {
class Camera;
class DeviceEnumerator;
class EventDispatcher;
class PipelineHandler;
class CameraManager
@ -27,13 +28,19 @@ public:
static CameraManager *instance();
void setEventDispatcher(EventDispatcher *dispatcher);
EventDispatcher *eventDispatcher();
private:
CameraManager();
CameraManager(const CameraManager &) = delete;
void operator=(const CameraManager &) = delete;
~CameraManager();
DeviceEnumerator *enumerator_;
std::vector<PipelineHandler *> pipes_;
EventDispatcher *dispatcher_;
};
} /* namespace libcamera */