Removing ear dependency

intern/object_mix.py

@@ -1,17 +1,10 @@
 import os
 import bpy
 from contextlib import contextmanager
-from fractions import Fraction
 from typing import List
 
 import wave
 
-# from ear.fileio.adm.elements import (ObjectCartesianPosition, JumpPosition,
-#                                      AudioBlockFormatObjects)
-# from ear.fileio.bw64 import Bw64Reader
-
-# from .geom_utils import (speaker_active_time_range, compute_relative_vector,
-#                          room_norm_vector)
 from .speaker_utils import solo_speakers, unmute_all_speakers
 
 
@@ -53,25 +46,26 @@ class ObjectMix:
         return self.scene.frame_end
 
     @property 
-    def sample_rate(self) -> int | None:
-        if self.intermediate_filename:
-            with wave.open(self.intermediate_filename, "rb") as f:
+    def sample_rate(self) -> int:
+        with wave.open(self.mixdown_filename, "rb") as f:
             return f.getframerate()
-        else:
-            return None
 
     @property
-    def bits_per_sample(self) -> int | None:
+    def bits_per_sample(self) -> int:
         with wave.open(self.mixdown_filename, "rb") as f:
             return f.getsampwidth() * 8
 
+    @property 
+    def frames_length(self) -> int:
+        with wave.open(self.mixdown_filename, "rb") as f:
+            return f.getnframes()
+
     @property
     def mixdown_filename(self) -> str:
         if self.intermediate_filename is None:
             self.mixdown()
         
         assert self.intermediate_filename
-
         return self.intermediate_filename
 
     @property