cleanup: webrtc-sys & fix RtcRuntime disposing crashes (#81)

livekit-webrtc/src/peer_connection_factory.rs

@@ -33,6 +33,16 @@ pub struct RtcConfiguration {
     pub ice_transport_type: IceTransportsType,
 }
 
+impl Default for RtcConfiguration {
+    fn default() -> Self {
+        Self {
+            ice_servers: vec![],
+            continual_gathering_policy: ContinualGatheringPolicy::GatherOnce,
+            ice_transport_type: IceTransportsType::All,
+        }
+    }
+}
+
 #[derive(Clone, Default)]
 pub struct PeerConnectionFactory {
     pub(crate) handle: imp_pcf::PeerConnectionFactory,
@@ -64,8 +74,9 @@ impl PeerConnectionFactory {
 pub mod native {
     use super::PeerConnectionFactory;
     use crate::audio_source::native::NativeAudioSource;
-    use crate::media_stream::{RtcAudioTrack, RtcVideoTrack};
+    use crate::audio_track::RtcAudioTrack;
     use crate::video_source::native::NativeVideoSource;
+    use crate::video_track::RtcVideoTrack;
 
     pub trait PeerConnectionFactoryExt {
         fn create_video_track(&self, label: &str, source: NativeVideoSource) -> RtcVideoTrack;