potential split between CLI and core library

Sources/AudioTeeCore/Output/BinaryOutputHandler.swift

@@ -0,0 +1,23 @@
+import Foundation
+
+public class BinaryAudioOutputHandler: AudioOutputHandler {
+  public init() {}
+  
+  public func handleAudioPacket(_ packet: AudioPacket) {
+    // TODO: should we use a DispatchQueue instead of writing directly?
+    // Write raw binary audio data directly to stdout
+    FileHandle.standardOutput.write(packet.data)
+  }
+
+  public func handleMetadata(_ metadata: AudioStreamMetadata) {
+    Logger.writeMessage(.metadata, data: metadata)
+  }
+
+  public func handleStreamStart() {
+    Logger.writeMessage(.streamStart, data: Optional<String>.none)
+  }
+
+  public func handleStreamStop() {
+    Logger.writeMessage(.streamStop, data: Optional<String>.none)
+  }
+}