cdplayer.py

#!/usr/bin/python3

import subprocess
import time
import os
import sys
import pyaudio

audio = pyaudio.PyAudio()
audiostream = audio.open(
    format=pyaudio.paInt16,
    channels=2,
    rate=44100,
    output=True
)

while True:
    print('### Deleting files')
    try: os.remove('cdda.raw')
    except: pass 
    
    print('### Getting number of tracks')
    while True:
        paranoia = subprocess.Popen(['cdparanoia', '-Q'], stderr=subprocess.PIPE)
        paranoia.wait()
        notracks = len(paranoia.stderr.readlines()) - 9
        if notracks > 0:
            print(f'### Found {notracks} tracks')
            break
        print('### CD not found. Retrying...')
        time.sleep(1)
    
    
    print('### Launching ripping')
    paranoia = subprocess.Popen(['cdparanoia', '--force-read-speed', '2', f'1-{notracks}', '-r', '-q'])
    
    
    while True:
        print('### Waiting for paranoia to write something...')
        try:
            stat = os.stat('cdda.raw')
            if stat.st_size > 0:
                break
        except Exception as e:
            if not isinstance(e, FileNotFoundError):
                raise
        time.sleep(1)
        
    print('### Playing')
    wav = open('cdda.raw', 'rb')
    while True:
        if paranoia.poll() == 1:
            print('### Paranoia quitted! CD out?')
            break
    
        chunk = wav.read(1024)
        if len(chunk) > 0:
            audiostream.write(chunk)
        else:
            break
                        
    wav.close()

audiostream.stop_stream()
audiostream.close()
audio.terminate()