1 files changed, 25 insertions, 0 deletions

diff --git a/helpers/music_file.py b/helpers/music_file.py
index 9976306..ba86142 100644
--- a/helpers/music_file.py
+++ b/helpers/music_file.py
@@ -92,6 +92,31 @@ class MusicFile:
 
         threading.Thread(name="MSMusicLoad", target=self.load).start()
 
+    def reload_properties(self, name=None, gain=1):
+        self.name = name or self.filename
+        if gain != self.initial_volume_factor:
+            self.initial_volume_factor = gain
+            self.reload_music_file()
+
+    def reload_music_file(self):
+        with file_lock:
+            try:
+                debug_print("Reloading « {} »".format(self.name))
+                initial_db_gain = gain(self.initial_volume_factor * 100)
+                self.audio_segment = pydub.AudioSegment \
+                        .from_file(self.filename) \
+                        .set_frame_rate(Config.frame_rate) \
+                        .set_channels(Config.channels) \
+                        .set_sample_width(Config.sample_width) \
+                        .apply_gain(initial_db_gain)
+            except Exception as e:
+                error_print("failed to reload « {} »: {}"\
+                        .format(self.name, e))
+                self.loading_error = e
+                self.to_failed()
+            else:
+                debug_print("Reloaded « {} »".format(self.name))
+
     # Machine related events
     def on_enter_loading(self):
         with file_lock: