UI: Add QDataStream opreators for OBSSource

Allows serializing/deserializing sources in and out of QDataStreams via
their UUID

UI/qt-wrappers.cpp

@@ -207,6 +207,23 @@ QDataStream &operator>>(QDataStream &in, OBSScene &scene)
 	return in;
 }
 
+QDataStream &operator<<(QDataStream &out, const OBSSource &source)
+{
+	return out << QString(obs_source_get_uuid(source));
+}
+
+QDataStream &operator>>(QDataStream &in, OBSSource &source)
+{
+	QString uuid;
+
+	in >> uuid;
+
+	OBSSourceAutoRelease source_ = obs_get_source_by_uuid(QT_TO_UTF8(uuid));
+	source = source_;
+
+	return in;
+}
+
 void DeleteLayout(QLayout *layout)
 {
 	if (!layout)

UI/qt-wrappers.hpp

@@ -71,6 +71,8 @@ QDataStream &operator>>(QDataStream &in,
 			std::vector<std::shared_ptr<OBSSignal>> &signal_vec);
 QDataStream &operator<<(QDataStream &out, const OBSScene &scene);
 QDataStream &operator>>(QDataStream &in, OBSScene &scene);
+QDataStream &operator<<(QDataStream &out, const OBSSource &source);
+QDataStream &operator>>(QDataStream &in, OBSSource &source);
 
 QThread *CreateQThread(std::function<void()> func);
 

UI/window-basic-main.cpp

@@ -344,6 +344,7 @@ OBSBasic::OBSBasic(QWidget *parent)
 	qRegisterMetaTypeStreamOperators<std::vector<std::shared_ptr<OBSSignal>>>(
 		"std::vector<std::shared_ptr<OBSSignal>>");
 	qRegisterMetaTypeStreamOperators<OBSScene>("OBSScene");
+	qRegisterMetaTypeStreamOperators<OBSSource>("OBSSource");
 #endif
 
 	ui->scenes->setAttribute(Qt::WA_MacShowFocusRect, false);