py: Create PyCameraManager

Wrap the CameraManager with a PyCameraManager class and move the related
code inside the new class.

This helps understanding the life times of the used-to-be global
variables, gets rid of static handleRequestCompleted function, and
allows us to simplify the binding code as the more complex pieces are
inside the class.

There should be no user visible functional changes.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/src/py/libcamera/py_camera_manager.h b/src/py/libcamera/py_camera_manager.h
new file mode 100644
index 00000000..9c15f814
--- /dev/null
+++ b/src/py/libcamera/py_camera_manager.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2022, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ */
+
+#pragma once
+
+#include <mutex>
+
+#include <libcamera/libcamera.h>
+
+#include <pybind11/smart_holder.h>
+
+using namespace libcamera;
+
+class PyCameraManager
+{
+public:
+	PyCameraManager();
+	~PyCameraManager();
+
+	pybind11::list cameras();
+	std::shared_ptr<Camera> get(const std::string &name) { return cameraManager_->get(name); }
+
+	static const std::string &version() { return CameraManager::version(); }
+
+	int eventFd() const { return eventFd_; }
+
+	std::vector<pybind11::object> getReadyRequests();
+
+	void handleRequestCompleted(Request *req);
+
+private:
+	std::unique_ptr<CameraManager> cameraManager_;
+
+	int eventFd_ = -1;
+	std::mutex completedRequestsMutex_;
+	std::vector<Request *> completedRequests_;
+
+	void writeFd();
+	void readFd();
+	void pushRequest(Request *req);
+	std::vector<Request *> getCompletedRequests();
+};