Update app.py

app.py

@@ -106,6 +106,7 @@ def process_text_to_singing(text, voice_type="neutral", tempo=100, pitch_shift=0
     
     # Adjust tempo based on emotion if not explicitly set
     tempo_value = tempo
+    accompaniment_midi_path = "temp_accompaniment.mid"
     
     generate_accompaniment(
         lyrics=text,
@@ -116,6 +117,9 @@ def process_text_to_singing(text, voice_type="neutral", tempo=100, pitch_shift=0
         time_signature="4/4",
         style=style
     )
+
+    accompaniment_path = "temp_accompaniment.wav"
+    convert_midi_to_wav(accompaniment_midi_path, accompaniment_path)
     
     # Step 6: Mix singing voice with accompaniment
     final_output_path = "output_song.wav"
@@ -142,6 +146,32 @@ def process_text_to_singing(text, voice_type="neutral", tempo=100, pitch_shift=0
     
     return speech_audio_path, final_output_path
 
+def convert_midi_to_wav(midi_path, wav_path, soundfont_path='/usr/share/sounds/sf2/FluidR3_GM.sf2'):
+    """Convert MIDI file to WAV using fluidsynth"""
+    import subprocess
+    
+    # Check if the MIDI file exists
+    if not os.path.exists(midi_path):
+        raise FileNotFoundError(f"MIDI file not found: {midi_path}")
+        
+    try:
+        # Use fluidsynth to convert MIDI to WAV
+        subprocess.run([
+            'fluidsynth', 
+            '-a', 'file', 
+            '-F', wav_path, 
+            soundfont_path, 
+            midi_path
+        ], check=True)
+        
+        return wav_path
+    except subprocess.CalledProcessError as e:
+        print(f"Error converting MIDI to WAV: {e}")
+        raise
+    except FileNotFoundError:
+        print("fluidsynth not found. Please install it.")
+        raise
+
 # Create Gradio interface
 with gr.Blocks(title="Text2Sing-DiffSinger") as demo:
     gr.Markdown("# Text2Sing-DiffSinger")