initial commit, 4.5 stable

servers/camera_server.h

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+/**************************************************************************/
+/*  camera_server.h                                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "core/object/class_db.h"
+#include "core/object/ref_counted.h"
+#include "core/os/thread_safe.h"
+#include "core/templates/rid.h"
+#include "core/variant/variant.h"
+
+/**
+	The camera server is a singleton object that gives access to the various
+	camera feeds that can be used as the background for our environment.
+**/
+
+class CameraFeed;
+template <typename T>
+class TypedArray;
+
+class CameraServer : public Object {
+	GDCLASS(CameraServer, Object);
+	_THREAD_SAFE_CLASS_
+
+public:
+	enum FeedImage {
+		FEED_RGBA_IMAGE = 0,
+		FEED_YCBCR_IMAGE = 0,
+		FEED_Y_IMAGE = 0,
+		FEED_CBCR_IMAGE = 1,
+		FEED_IMAGES = 2
+	};
+
+	typedef CameraServer *(*CreateFunc)();
+	static inline constexpr const char feeds_updated_signal_name[] = "camera_feeds_updated";
+
+private:
+protected:
+	static CreateFunc create_func;
+
+	bool monitoring_feeds = false;
+	Vector<Ref<CameraFeed>> feeds;
+
+	static CameraServer *singleton;
+
+	static void _bind_methods();
+
+	template <typename T>
+	static CameraServer *_create_builtin() {
+		return memnew(T);
+	}
+
+public:
+	static CameraServer *get_singleton();
+
+	template <typename T>
+	static void make_default() {
+		create_func = _create_builtin<T>;
+	}
+
+	static CameraServer *create() {
+		CameraServer *server = create_func ? create_func() : memnew(CameraServer);
+		return server;
+	}
+
+	virtual void set_monitoring_feeds(bool p_monitoring_feeds);
+	_FORCE_INLINE_ bool is_monitoring_feeds() const { return monitoring_feeds; }
+
+	// Right now we identify our feed by it's ID when it's used in the background.
+	// May see if we can change this to purely relying on CameraFeed objects or by name.
+	int get_free_id();
+	int get_feed_index(int p_id);
+	Ref<CameraFeed> get_feed_by_id(int p_id);
+
+	// Add and remove feeds.
+	void add_feed(const Ref<CameraFeed> &p_feed);
+	void remove_feed(const Ref<CameraFeed> &p_feed);
+
+	// Get our feeds.
+	Ref<CameraFeed> get_feed(int p_index);
+	int get_feed_count();
+	TypedArray<CameraFeed> get_feeds();
+
+	// Intended for use with custom CameraServer implementation.
+	RID feed_texture(int p_id, FeedImage p_texture);
+
+	CameraServer();
+	~CameraServer();
+};
+
+VARIANT_ENUM_CAST(CameraServer::FeedImage);