src/generadores/generadoraudio.py

import os
import subprocess
import pretty_midi

# --- CONFIGURA ESTO ---
SOUNDFONT_PATH = r"C:\Users\pampi\Documents\corneta.sf2"
INPUT_FOLDER = "a"
OUTPUT_FOLDER = "b"
TARGET_PROGRAM = 40  # Preset de tu corneta (0-127)
# ----------------------

def synthesize():
    if not os.path.exists(OUTPUT_FOLDER): os.makedirs(OUTPUT_FOLDER)
    
    # Limpiar WAVs viejos si existen
    for f in os.listdir(OUTPUT_FOLDER): os.remove(os.path.join(OUTPUT_FOLDER, f))

    files = [f for f in os.listdir(INPUT_FOLDER) if f.endswith('.mid')]
    print(f"Sintetizando {len(files)} archivos...")

    for midi_file in files:
        # Parchear MIDI
        midi_path = os.path.join(INPUT_FOLDER, midi_file)
        pm = pretty_midi.PrettyMIDI(midi_path)
        for inst in pm.instruments:
            inst.program = TARGET_PROGRAM
        
        temp_midi = os.path.join(INPUT_FOLDER, "temp.mid")
        pm.write(temp_midi)
        
        # Convertir
        wav_name = midi_file.replace(".mid", ".wav")
        wav_path = os.path.join(OUTPUT_FOLDER, wav_name)
        
        cmd = [
            'fluidsynth', '-ni', '-F', wav_path, '-r', '22050', '-g', '1.0', 
            SOUNDFONT_PATH, temp_midi
        ]
        
        subprocess.run(cmd, check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        print(f"-> {wav_name}")

    if os.path.exists(temp_midi): os.remove(temp_midi)
    print("Paso 2: WAVs generados.")

if __name__ == "__main__":
    synthesize()