audio device button icons

Assets/Util/AudioSourceButton.cs

@@ -0,0 +1,17 @@
+using UnityEngine;
+using UnityEngine.UI;
+
+public class AudioSourceButton : MonoBehaviour {
+    public Texture speakerTexture;
+    public Texture micTexture;
+
+    void SetTexture(bool useLoopback) {
+        RawImage image = GetComponent<RawImage>();
+
+        if (!image) return;
+
+        image.texture = useLoopback
+            ? speakerTexture
+            : micTexture;
+    }
+}