Update app.py

app.py

@@ -9,6 +9,7 @@ import os
 import sys
 import pickle
 import tempfile
+import shutil
 from huggingface_hub import hf_hub_download
 
 # Add text2midi model to path
@@ -124,52 +125,64 @@ def midi_to_wav(midi_path: str, wav_path: str, sample_rate: int = 44100) -> bool
     return os.path.exists(wav_path)
 
 def generate_music(prompt: str):
-    """Generate music from text prompt. Returns audio file path."""
+    """Generate music from text prompt. Returns audio file path or tuple (sample_rate, audio_data)."""
     if not prompt or not prompt.strip():
         return None
 
+    midi_path = None
+    wav_path = None
+    
     try:
-        # Create temporary files
-        midi_file = tempfile.NamedTemporaryFile(suffix='.mid', delete=False)
-        midi_path = midi_file.name
-        midi_file.close()
-
-        wav_file = tempfile.NamedTemporaryFile(suffix='.wav', delete=False)
-        wav_path = wav_file.name
-        wav_file.close()
-
-        try:
-            # Generate MIDI
-            if MODEL_LOADED:
-                generate_midi_with_model(prompt, midi_path, max_len=512, temperature=0.9)
-            else:
-                from midiutil import MIDIFile
-                midi = MIDIFile(1)
-                midi.addTempo(0, 0, 120)
-                notes = [60, 62, 64, 65, 67, 69, 71, 72]
-                for i, note in enumerate(notes[:min(len(prompt.split()), 8)]):
-                    midi.addNote(0, 0, note, i, 1, 100)
-                with open(midi_path, "wb") as f:
-                    midi.writeFile(f)
-
-            # Convert to WAV
-            if SOUNDFONT_PATH and midi_to_wav(midi_path, wav_path):
+        # Create persistent output directory
+        output_dir = "output"
+        os.makedirs(output_dir, exist_ok=True)
+        
+        # Create files with proper names in persistent directory
+        import time
+        timestamp = int(time.time() * 1000)
+        midi_path = os.path.join(output_dir, f"music_{timestamp}.mid")
+        wav_path = os.path.join(output_dir, f"music_{timestamp}.wav")
+
+        # Generate MIDI
+        if MODEL_LOADED:
+            generate_midi_with_model(prompt, midi_path, max_len=512, temperature=0.9)
+        else:
+            from midiutil import MIDIFile
+            midi = MIDIFile(1)
+            midi.addTempo(0, 0, 120)
+            notes = [60, 62, 64, 65, 67, 69, 71, 72]
+            for i, note in enumerate(notes[:min(len(prompt.split()), 8)]):
+                midi.addNote(0, 0, note, i, 1, 100)
+            with open(midi_path, "wb") as f:
+                midi.writeFile(f)
+
+        # Convert to WAV
+        if SOUNDFONT_PATH and midi_to_wav(midi_path, wav_path):
+            # Verify the file exists and has content
+            if os.path.exists(wav_path) and os.path.getsize(wav_path) > 0:
+                print(f"Generated audio file: {wav_path} ({os.path.getsize(wav_path)} bytes)")
                 return wav_path
             else:
+                print(f"WAV file is empty or doesn't exist")
                 return None
-
-        finally:
-            try:
-                os.unlink(midi_path)
-            except:
-                pass
+        else:
+            print("Failed to convert MIDI to WAV")
+            return None
 
     except Exception as e:
+        print(f"Error generating music: {e}")
         import traceback
         traceback.print_exc()
         return None
+    finally:
+        # Clean up MIDI file but keep WAV for Gradio to serve
+        if midi_path and os.path.exists(midi_path):
+            try:
+                os.unlink(midi_path)
+            except:
+                pass
 
-# Create simple Gradio Interface (avoids schema generation bugs in gr.Blocks)
+# Create simple Gradio Interface
 demo = gr.Interface(
     fn=generate_music,
     inputs=gr.Textbox(
@@ -186,8 +199,10 @@ demo = gr.Interface(
         ["A slow emotional classical piece with violin"],
         ["Epic cinematic soundtrack with dark atmosphere"],
     ],
-    allow_flagging="never"
+    allow_flagging="never",
+    cache_examples=False
 )
 
 # Launch
-demo.launch(show_api=True)
+if __name__ == "__main__":
+    demo.launch(show_api=True)