ported update_bgm to python

adx/adx_parser.py

@@ -74,7 +74,7 @@ class adx_file(object):
         self.encrypted = self.get_val(CRYPT_OFF, CRYPT_LEN)
         self.d_offset = self.get_val(DATA_OFF_OFF, DATA_OFF_LEN)
         if self.d_offset < DATA_OFF_MIN:
-            return None
+            return
         self.l_exists = 1
         # now load things for math
         self.sam_rate = self.get_val(SRATE_OFF, SRATE_LEN)
@@ -106,13 +106,11 @@ class adx_file(object):
             return None
         if self.l_start > self.sam_count or self.l_end > self.sam_count:
             raise ValueError("Invalid Loop Data")
-            return None
         if self.l_style not in LOOP_TYPE_SUP:
             raise NotImplementedError(
                 "Loop Style {} Not Implemented".format(str(self.l_style))
             )
-            return None
-        ret = {}
+        ret = dict()
         ret["duration"] = self.sam_count / self.sam_rate
         ret["loop_start"] = {}
         ret["loop_start"]["seconds"] = self.l_start / self.sam_rate
@@ -123,7 +121,5 @@ class adx_file(object):
         ret["loop_end"] = {}
         ret["loop_end"]["seconds"] = self.l_end / self.sam_rate
         ret["loop_end"]["samples_native"] = self.l_end
-        ret["loop_end"]["samples_48k"] = dumb_round(
-            self.l_end / self.sam_rate * 48000
-        )
+        ret["loop_end"]["samples_48k"] = dumb_round(self.l_end / self.sam_rate * 48000)
         return ret