Merge pull request #6 from JayFoxRox/scr2wav

Add tool to convert webdemo audio scr files to wav

scr2wav.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+
+# The demo version of Star Wars Episode 1: Racer uses a messed up file format for audio.
+# Basically it's just XOR'd with 0x55, 0x55, 0xEE, 0xEE and the name Caesar shifted.
+# This script undoes this mess, but the files will still be suffix'd with ".rbq"
+
+import sys
+import os
+
+for path in sys.argv[1:]:
+  filename = os.path.basename(path)
+  real_filename = ''
+  for s in filename:
+    c = ord(s)
+    if (c >= ord('a') and c <= ord('z')):
+      c = ((c - ord('a') + 25) % 26) + ord('a')
+    if (c >= ord('A') and c <= ord('Z')):
+      c = ((c - ord('A') + 25) % 26) + ord('A')
+    real_filename += '%c' % c
+  print("Processing %s (%s)" % (filename, real_filename))
+  with open(path, 'rb') as in_file:
+    with open(real_filename, 'wb') as out_file:
+      data = in_file.read()
+      real_data = bytes([data[i] ^ (0x55 if ((i % 4) <= 1) else 0xEE) for i in range(len(data))])
+      out_file.write(real_data)