Level_1: File restructure to support centralized development

source/level_2/level_2.py

@@ -0,0 +1,21 @@
+# ------------------------------------------------------------
+# AAC Coder/Decoder - Level 2 Wrappers + Demo
+#
+# Multimedia course at Aristotle University of
+# Thessaloniki (AUTh)
+#
+# Author:
+#   Christos Choutouridis (ΑΕΜ 8997)
+#   cchoutou@ece.auth.gr
+#
+# Description:
+#   Level 2 wrapper module.
+#
+#   This file provides:
+#   - Thin wrappers for Level 2 API functions (encode/decode) that delegate
+#     to the corresponding core implementations.
+#   - A demo function that runs end-to-end and computes SNR.
+#   - A small CLI entrypoint for convenience.
+# ------------------------------------------------------------
+from __future__ import annotations
+