Untitled

import mido
import os

# Define the input and output file paths
input_file_path = 'Requiem - Der Wille Von Surtur, Der Macht Von Banhammer.mid'
input_file_path = 'test.mid'
output_file_path = 'Requiem - Der Wille Von Surtur, Der Macht Von Banhammer_out.mid'
output_file_path = 'test2.mid'

def clean_midi_file(input_path, output_path):
    # Load the MIDI file
    midi = mido.MidiFile(input_path)
    
    # Create a new MIDI file for output, preserving the same ticks per beat (timing information)
    cleaned_midi = mido.MidiFile(ticks_per_beat=midi.ticks_per_beat)
    
    # Process each track in the original MIDI file
    for track in midi.tracks:
        cleaned_track = mido.MidiTrack()  # New track to store cleaned messages
        cleaned_midi.tracks.append(cleaned_track)

        # Process all messages in the track
        
        accumulated_time = 0  # Used to accumulate time of removed messages
        
        for msg in track:
            print(f'total  : {msg}')
            # Only process the message types we care about
            if msg.type in ['note_on', 'note_off', 'set_tempo', 'time_signature', 'key_signature', 'sysex']:
                # Add the message as is
                msg.time += accumulated_time
                cleaned_track.append(msg)
                accumulated_time = 0  # Reset after applying
            elif msg.is_meta:
                # Keep all meta messages (tempo, time signature, etc.)
                msg.time += accumulated_time
                cleaned_track.append(msg)
                accumulated_time = 0  # Reset after applying
            elif msg.type == 'control_change':
                # Remove certain Control Change messages like modulation (CC1), expression (CC11), etc.
                if msg.control not in [64]:  # Preserve Control Change 64 (Sustain Pedal)
                    accumulated_time += msg.time
                    print(f'Removed Control Change: {msg}')
                    print(f'Times : {msg.time} , {accumulated_time}')
                else:
                    msg.time += accumulated_time
                    cleaned_track.append(msg)
                    accumulated_time = 0  # Reset after applying
                    
            else:
                # Keep all other messages except aftertouch, program_change, and pitchwheel
                if msg.type not in ['aftertouch', 'program_change', 'pitchwheel']:
                    msg.time += accumulated_time
                    cleaned_track.append(msg)
                    accumulated_time = 0  # Reset after applying

    # Save the cleaned MIDI file
    cleaned_midi.save(output_path)
    print(f'Cleaned MIDI file saved to {output_path}')

# Clean the MIDI file
if __name__ == "__main__":
    if os.path.exists(input_file_path):
        clean_midi_file(input_file_path, output_file_path)
    else:
        print(f'Input file {input_file_path} does not exist.')