fixing some bugs

src/main.py

@@ -9,13 +9,13 @@ import mp3
 
 if __name__ == "__main__":
     print("Loading project...")
-    test_project = Project(song_length=8)
+    """test_project = Project(song_length=64,bpm=120)
     
     drum_channel = ProjectChannel(
         test_project,
         name="Drums",
-        volume=5,
-        
+        volume=-5,
+        pan=-100
     )
     drum_channel.chunks.append(AudioChannelChunk(
         drum_channel,
@@ -29,10 +29,42 @@ if __name__ == "__main__":
         *librosa.load("120 bpm amen break.mp3", mono=False, sr=test_project.sample_rate),
         name="120 bpm amen break.mp3"
     ))
+    drum_channel.chunks.append(AudioChannelChunk(
+        drum_channel,
+        position=2,
+        *librosa.load("120 bpm amen break.mp3", mono=False, sr=test_project.sample_rate),
+        name="120 bpm amen break.mp3"
+    ))
+    drum_channel.chunks.append(AudioChannelChunk(
+        drum_channel,
+        position=3,
+        *librosa.load("120 bpm amen break.mp3", mono=False, sr=test_project.sample_rate),
+        name="120 bpm amen break.mp3"
+    ))
+    drum_channel.chunks.append(AudioChannelChunk(
+        drum_channel,
+        position=4,
+        *librosa.load("120 bpm amen break.mp3", mono=False, sr=test_project.sample_rate),
+        name="120 bpm amen break.mp3"
+    ))
+    
+    piano_channel = ProjectChannel(
+        test_project,
+        name="Piano",
+        volume=-5,
+        pan=100
+    )
+    piano_channel.chunks.append(AudioChannelChunk(
+        piano_channel,
+        position=2,
+        *librosa.load("piano chords - Bmin 120BPM.wav", mono=False, sr=test_project.sample_rate),
+        name="piano chords - Bmin 120BPM.wav"
+    ))
 
     test_project.channels.append(drum_channel)
+    test_project.channels.append(piano_channel)
     
-    test_project.write_to_file("test_project.tdp")
+    test_project.write_to_file("test_project.tdp")"""
     test_project = Project.from_file("test_project.tdp")
     
     # start the ui

src/project.py

@@ -86,18 +86,16 @@ chunk_type_associations = {
 }
 
 class ProjectChannel:
-    def __init__(self, project, name: str = "", volume: int = 0, pan: int = 0, mute: bool = False, solo: bool = False, chunks: list[ChannelChunk] = []):
+    def __init__(self, project, name: str = "", volume: int = 0, pan: int = 0, mute: bool = False, solo: bool = False, channel_chunks: list[ChannelChunk] = []):
         self.project = project
         self.name = name
         self.volume = volume
         self.pan = pan
         self.mute = mute
         self.solo = solo
-        self.chunks = chunks
+        self.chunks = []
         
-        self.board = pedalboard.Pedalboard([
-            pedalboard.Reverb()
-        ])
+        self.board = pedalboard.Pedalboard()
         
     def pan_stereo(self, stereo, pan):
         pan = np.clip(pan, -1.0, 1.0)
@@ -120,14 +118,14 @@ class ProjectChannel:
             buffer[start:end] += audio
             
         # apply effects
-        buffer = self.board(buffer, self.project.sample_rate)
+        #buffer = self.board(buffer, self.project.sample_rate)
             
         # apply volume
         gain = 10 ** (self.volume / 20)
         buffer *= gain
         
         # pan
-        self.pan_stereo(buffer, self.pan/100)
+        buffer = self.pan_stereo(buffer, self.pan/100)
         
         return buffer
         

src/song_player.py

@@ -35,7 +35,7 @@ class SongPlayer:
         out[:] = chunk
         self.playhead = end
         
-        self.timeline.run_worker(self.update_visual_playhead())
+        
         
     async def update_visual_playhead(self):
         # get how many bars into the song we are
@@ -56,6 +56,7 @@ class SongPlayer:
         
     def pause(self):
         self.paused = True
+        self.stream.close()
         
         play_btn = self.timeline.app.query_one("#play-button")
         play_btn.variant = "success"
@@ -66,14 +67,20 @@ class SongPlayer:
         self.project = project
         self.audio = project.render()
         
-        try:
-            self.paused = False
+        
+        try:            
+            if not self.stream.closed:
+                self.stream.close()
+            
             self.stream = sd.OutputStream(
                 samplerate=project.sample_rate,
                 channels=self.audio.shape[1] if self.audio.ndim > 1 else 1,
-                callback=self.play_callback
+                callback=self.play_callback,
+                blocksize=256
             )
             
+            self.paused = False
+            
             self.stream.start()
             
             

src/ui/widgets/timeline.py

@@ -127,9 +127,11 @@ class Timeline(Vertical):
         with VerticalScroll(id="rows"):
             for channel in self.app.project.channels:
                 with TimelineRow() as row:
-                    row.styles.width = self.bar_offset * self.app.project.song_length
                     
+                    row.styles.width = self.bar_offset * self.app.project.song_length
+
                     for chunk in channel.chunks:
+                        
                         if chunk.chunk_type == ChunkType.CHUNK:
                             yield Chunk(chunk_name=chunk.name, bar_pos=chunk.position)
                         elif chunk.chunk_type == ChunkType.AUDIO: