Implement Songbird driver configuration (#1074)

src/driver/tasks/message/mixer.rs

@@ -1,11 +1,16 @@
 use super::{Interconnect, UdpRxMessage, UdpTxMessage, WsMessage};
 
-use crate::{tracks::Track, Bitrate};
+use crate::{
+    driver::{Config, CryptoState},
+    tracks::Track,
+    Bitrate,
+};
 use flume::Sender;
 use xsalsa20poly1305::XSalsa20Poly1305 as Cipher;
 
 pub(crate) struct MixerConnection {
     pub cipher: Cipher,
+    pub crypto_state: CryptoState,
     pub udp_rx: Sender<UdpRxMessage>,
     pub udp_tx: Sender<UdpTxMessage>,
 }
@@ -20,13 +25,17 @@ impl Drop for MixerConnection {
 pub(crate) enum MixerMessage {
     AddTrack(Track),
     SetTrack(Option<Track>),
+
     SetBitrate(Bitrate),
+    SetConfig(Config),
     SetMute(bool),
+
     SetConn(MixerConnection, u32),
+    Ws(Option<Sender<WsMessage>>),
     DropConn,
+
     ReplaceInterconnect(Interconnect),
     RebuildEncoder,
 
-    Ws(Option<Sender<WsMessage>>),
     Poison,
 }