series 4 codec work, inital decode success

analysis_idf/try_codec.py

@@ -0,0 +1,42 @@
+"""Feed candidate body offsets to the BW codec and compare with sidecar."""
+from __future__ import annotations
+import sys
+from pathlib import Path
+
+REPO = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(REPO))
+
+from minimateplus.waveform_codec import decode_waveform_v2, walk_body, find_data_start
+from analysis_idf.recon import TARGET, TXT, load_sidecar_samples
+
+
+def main():
+    buf = TARGET.read_bytes()
+    sc = load_sidecar_samples(TXT)
+    # Sidecar samples in 0.0003 counts (Thor geo LSB).
+    sc_tran = [int(round(v / 0.0003)) for v in sc["Tran"][:30]]
+    sc_vert = [int(round(v / 0.0003)) for v in sc["Vert"][:30]]
+    sc_long = [int(round(v / 0.0003)) for v in sc["Long"][:30]]
+    sc_micl = [int(round(v / 1e-6)) for v in sc["MicL"][:30]]  # 1 µ unit for mic? Will iterate.
+    print(f"sidecar Tran (counts): {sc_tran}")
+    print(f"sidecar Vert (counts): {sc_vert}")
+    print(f"sidecar Long (counts): {sc_long}")
+    print(f"sidecar MicL (×1e-6):  {sc_micl}")
+    print()
+
+    # Try candidate body start offsets.
+    for off in (0x0f1f, 0x1057, 0x11f1, 0x1333, 0x1bde, 0x0d30):
+        print(f"=== body @ 0x{off:04x} ===")
+        body = buf[off:]
+        decoded = decode_waveform_v2(body)
+        if not decoded:
+            print("  decode_waveform_v2 returned None")
+            continue
+        for ch in ("Tran", "Vert", "Long", "MicL"):
+            arr = decoded.get(ch, [])
+            print(f"  {ch}[{len(arr)}]: {arr[:20]}")
+        print()
+
+
+if __name__ == "__main__":
+    main()