Add DEBUG statements to investigate issue #11

app/music.py

@@ -30,7 +30,7 @@ class Music:
         to hold up the UI during the fade.
         """
 
-        DEBUG("music.fade()")
+        DEBUG("music.fade()", True)
 
         if not self.playing():
             return None
@@ -45,7 +45,11 @@ class Music:
         Implementation of fading the current track in a separate thread.
         """
 
-        DEBUG("music._fade()")
+        # Take a copy of current player to allow another track to be
+        # started without interfering here
+        p = self.player
+
+        DEBUG(f"music._fade(), {self.player=}", True)
 
         fade_time = Config.FADE_TIME / 1000
         steps = Config.FADE_STEPS
@@ -58,9 +62,6 @@ class Music:
         # (n**2 + n) / 2
         total_measures_count = (steps**2 + steps) / 2
 
-        # Take a copy of current player to allow another track to be
-        # started without interfering here
-        p = self.player
         measures_to_reduce_by = 0
         for i in range(1, steps + 1):
             measures_to_reduce_by += i
@@ -69,6 +70,7 @@ class Music:
             sleep(sleep_time)
 
         p.stop()
+        DEBUG(f"Releasing play {p=}", True)
         p.release()
         self.fading = False
 
@@ -83,7 +85,7 @@ class Music:
     def get_position(self):
         "Return current position"
 
-        DEBUG("music.get_position")
+        DEBUG("music.get_position", True)
 
         return self.player.get_position()
 
@@ -94,8 +96,6 @@ class Music:
         Log and return if path not found.
         """
 
-        DEBUG(f"music.play({path})")
-
         if not os.access(path, os.R_OK):
             ERROR(f"play({path}): path not found")
             return
@@ -104,6 +104,7 @@ class Music:
 
         self.player = self.VLC.media_player_new(path)
         self.player.audio_set_volume(self.max_volume)
+        DEBUG(f"music.play({path=}), {self.player}", True)
         self.player.play()
         self.current_track_start_time = datetime.now()
 
@@ -140,15 +141,17 @@ class Music:
     def stop(self):
         "Immediately stop playing"
 
-        DEBUG("music.stop()")
+        DEBUG("music.stop()", True)
 
         if not self.player:
             return None
 
         position = self.player.get_position()
         self.player.stop()
-        self.player.release()
+        p = self.player
         # Ensure we don't reference player after release
         self.player = None
+        DEBUG(f"Releasing play {p=}", True)
+        p.release()
 
         return position