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libcamera: camera_manager: Make the class a singleton

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There can only be a single camera manager instance in the application.
Creating it as a singleton helps avoiding mistakes. It also allows the
camera manager to be used as a storage of global data, such as the
future event dispatcher.

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 2019-01-05 12:58:20 +02:00
parent f3829b5745
commit 8b0de29c41
3 changed files with 22 additions and 8 deletions
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8
include/libcamera/camera_manager.h
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@ -19,15 +19,19 @@ class PipelineHandler;
class CameraManager
{
public:
CameraManager();
int start();
void stop();
std::vector<std::string> list() const;
Camera *get(const std::string &name);
static CameraManager *instance();
private:
CameraManager();
CameraManager(const CameraManager &) = delete;
void operator=(const CameraManager &) = delete;
DeviceEnumerator *enumerator_;
std::vector<PipelineHandler *> pipes_;
};