initial commit, 4.5 stable

scene/resources/camera_texture.cpp

@@ -0,0 +1,157 @@
+/**************************************************************************/
+/*  camera_texture.cpp                                                    */
+/**************************************************************************/
+/*                         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.                 */
+/**************************************************************************/
+
+#include "camera_texture.h"
+
+#include "servers/camera/camera_feed.h"
+
+void CameraTexture::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("set_camera_feed_id", "feed_id"), &CameraTexture::set_camera_feed_id);
+	ClassDB::bind_method(D_METHOD("get_camera_feed_id"), &CameraTexture::get_camera_feed_id);
+
+	ClassDB::bind_method(D_METHOD("set_which_feed", "which_feed"), &CameraTexture::set_which_feed);
+	ClassDB::bind_method(D_METHOD("get_which_feed"), &CameraTexture::get_which_feed);
+
+	ClassDB::bind_method(D_METHOD("set_camera_active", "active"), &CameraTexture::set_camera_active);
+	ClassDB::bind_method(D_METHOD("get_camera_active"), &CameraTexture::get_camera_active);
+
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "camera_feed_id"), "set_camera_feed_id", "get_camera_feed_id");
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "which_feed"), "set_which_feed", "get_which_feed");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "camera_is_active"), "set_camera_active", "get_camera_active");
+	ADD_PROPERTY_DEFAULT("camera_is_active", false);
+}
+
+void CameraTexture::_on_format_changed() {
+	// FIXME: `emit_changed` is more appropriate, but causes errors for some reason.
+	callable_mp((Resource *)this, &Resource::emit_changed).call_deferred();
+}
+
+int CameraTexture::get_width() const {
+	Ref<CameraFeed> feed = CameraServer::get_singleton()->get_feed_by_id(camera_feed_id);
+	if (feed.is_valid()) {
+		return feed->get_base_width();
+	} else {
+		return 0;
+	}
+}
+
+int CameraTexture::get_height() const {
+	Ref<CameraFeed> feed = CameraServer::get_singleton()->get_feed_by_id(camera_feed_id);
+	if (feed.is_valid()) {
+		return feed->get_base_height();
+	} else {
+		return 0;
+	}
+}
+
+bool CameraTexture::has_alpha() const {
+	return false;
+}
+
+RID CameraTexture::get_rid() const {
+	Ref<CameraFeed> feed = CameraServer::get_singleton()->get_feed_by_id(camera_feed_id);
+	if (feed.is_valid()) {
+		return feed->get_texture(which_feed);
+	} else {
+		if (_texture.is_null()) {
+			_texture = RenderingServer::get_singleton()->texture_2d_placeholder_create();
+		}
+		return _texture;
+	}
+}
+
+Ref<Image> CameraTexture::get_image() const {
+	return RenderingServer::get_singleton()->texture_2d_get(get_rid());
+}
+
+void CameraTexture::set_camera_feed_id(int p_new_id) {
+	Ref<CameraFeed> feed = CameraServer::get_singleton()->get_feed_by_id(camera_feed_id);
+	if (feed.is_valid()) {
+		if (feed->is_connected("format_changed", callable_mp(this, &CameraTexture::_on_format_changed))) {
+			feed->disconnect("format_changed", callable_mp(this, &CameraTexture::_on_format_changed));
+		}
+	}
+
+	camera_feed_id = p_new_id;
+
+	feed = CameraServer::get_singleton()->get_feed_by_id(camera_feed_id);
+	if (feed.is_valid()) {
+		feed->connect("format_changed", callable_mp(this, &CameraTexture::_on_format_changed));
+	}
+
+	notify_property_list_changed();
+	callable_mp((Resource *)this, &Resource::emit_changed).call_deferred();
+}
+
+int CameraTexture::get_camera_feed_id() const {
+	return camera_feed_id;
+}
+
+void CameraTexture::set_which_feed(CameraServer::FeedImage p_which) {
+	which_feed = p_which;
+	notify_property_list_changed();
+	callable_mp((Resource *)this, &Resource::emit_changed).call_deferred();
+}
+
+CameraServer::FeedImage CameraTexture::get_which_feed() const {
+	return which_feed;
+}
+
+void CameraTexture::set_camera_active(bool p_active) {
+	Ref<CameraFeed> feed = CameraServer::get_singleton()->get_feed_by_id(camera_feed_id);
+	if (feed.is_valid()) {
+		feed->set_active(p_active);
+		notify_property_list_changed();
+		callable_mp((Resource *)this, &Resource::emit_changed).call_deferred();
+	}
+}
+
+bool CameraTexture::get_camera_active() const {
+	Ref<CameraFeed> feed = CameraServer::get_singleton()->get_feed_by_id(camera_feed_id);
+	if (feed.is_valid()) {
+		return feed->is_active();
+	} else {
+		return false;
+	}
+}
+
+CameraTexture::CameraTexture() {
+	// Note: When any CameraTexture is created, we need to automatically activate monitoring
+	//       of camera feeds. This may incur a small lag spike, so it may be preferable to
+	//       enable it manually before creating the camera texture.
+	CameraServer::get_singleton()->set_monitoring_feeds(true);
+}
+
+CameraTexture::~CameraTexture() {
+	if (_texture.is_valid()) {
+		ERR_FAIL_NULL(RenderingServer::get_singleton());
+		RenderingServer::get_singleton()->free(_texture);
+	}
+}