python通过PyGame播放Midi和Mp3文件详解编程语言

''' pg_midi_sound101.py 
play midi music files (also mp3 files) using pygame 
tested with Python273/331 and pygame192 by vegaseat 
''' 
  
import pygame as pg 
  
def play_music(music_file): 
    ''' 
    stream music with mixer.music module in blocking manner 
    this will stream the sound from disk while playing 
    ''' 
    clock = pg.time.Clock() 
    try: 
        pg.mixer.music.load(music_file) 
        print("Music file {} loaded!".format(music_file)) 
    except pygame.error: 
        print("File {} not found! {}".format(music_file, pg.get_error())) 
        return 
    pg.mixer.music.play() 
    # check if playback has finished 
    while pg.mixer.music.get_busy(): 
        clock.tick(30) 
  
  
# pick a midi or MP3 music file you have in the working folder 
# or give full pathname 
music_file = "Latin.mid" 
#music_file = "Drumtrack.mp3" 
  
freq = 44100    # audio CD quality 
bitsize = -16   # unsigned 16 bit 
channels = 2    # 1 is mono, 2 is stereo 
buffer = 2048   # number of samples (experiment to get right sound) 
pg.mixer.init(freq, bitsize, channels, buffer) 
  
# optional volume 0 to 1.0 
pg.mixer.music.set_volume(0.8) 
  
try: 
    play_music(music_file) 
except KeyboardInterrupt: 
    # if user hits Ctrl/C then exit 
    # (works only in console mode) 
    pg.mixer.music.fadeout(1000) 
    pg.mixer.music.stop() 
    raise SystemExit