Embed and Play Midi Music in your Code (Python)

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Sep 4th, 2007

Views: 2,427

vegaseat

Another application of Python module base64, this time to embed midi music data in your program. You also need the module pygame to execute this Python code. Enjoy the music!

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# play an embedded midi music file on your computer's sound card
# experiments with module pygame from: http://www.pygame.org/
# tested with Python25 and PyGame171      vegaseat      04sep2007
 
"""
# use this short program to create the base64 encoded midi music string
# (base64 encoding simply produces a readable string from binary data)
# then copy and paste the result into your pygame program ...
import base64
mid_file = "FishPolka.mid"
print "mid64='''\\\n" + base64.encodestring(open(mid_file, 'rb').read()) + "'''"
"""
 
import pygame
import base64
 
def play_music(music_file):
    """
    stream music with mixer.music module in blocking manner
    this will stream the sound from disk while playing
    """
    clock = pygame.time.Clock()
    try:
        pygame.mixer.music.load(music_file)
        print "Music file %s loaded!" % music_file
    except pygame.error:
        print "File %s not found! (%s)" % (music_file, pygame.get_error())
        return
    pygame.mixer.music.play()
    while pygame.mixer.music.get_busy():
        # check if playback has finished
        clock.tick(30)
 
mid64='''\
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'''
 
music_file = "FishPolka.mid"
 
# convert back to a binary midi and save to a file in the working directory
fish = base64.b64decode(mid64)
fout = open(music_file,"wb")
fout.write(fish)
fout.close()
 
freq = 44100    # audio CD quality
bitsize = -16   # unsigned 16 bit
channels = 2    # 1 is mono, 2 is stereo
buffer = 1024    # number of samples
pygame.mixer.init(freq, bitsize, channels, buffer)
 
# optional volume 0 to 1.0
pygame.mixer.music.set_volume(0.8)
 
try:
    # use the midi file you just saved
    play_music(music_file)
except KeyboardInterrupt:
    # if user hits Ctrl/C then exit
    # (works only in console mode)
    pygame.mixer.music.fadeout(1000)
    pygame.mixer.music.stop()
    raise SystemExit

# play an embedded midi music file on your computer's sound card
# experiments with module pygame from: http://www.pygame.org/
# tested with Python25 and PyGame171      vegaseat      04sep2007

"""
# use this short program to create the base64 encoded midi music string
# (base64 encoding simply produces a readable string from binary data)
# then copy and paste the result into your pygame program ...
import base64
mid_file = "FishPolka.mid"
print "mid64='''\\\n" + base64.encodestring(open(mid_file, 'rb').read()) + "'''"
"""

import pygame
import base64

def play_music(music_file):
    """
    stream music with mixer.music module in blocking manner
    this will stream the sound from disk while playing
    """
    clock = pygame.time.Clock()
    try:
        pygame.mixer.music.load(music_file)
        print "Music file %s loaded!" % music_file
    except pygame.error:
        print "File %s not found! (%s)" % (music_file, pygame.get_error())
        return
    pygame.mixer.music.play()
    while pygame.mixer.music.get_busy():
        # check if playback has finished
        clock.tick(30)

mid64='''\
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'''

music_file = "FishPolka.mid"

# convert back to a binary midi and save to a file in the working directory
fish = base64.b64decode(mid64)
fout = open(music_file,"wb")
fout.write(fish)
fout.close()

freq = 44100    # audio CD quality
bitsize = -16   # unsigned 16 bit
channels = 2    # 1 is mono, 2 is stereo
buffer = 1024    # number of samples
pygame.mixer.init(freq, bitsize, channels, buffer)

# optional volume 0 to 1.0
pygame.mixer.music.set_volume(0.8)

try:
    # use the midi file you just saved
    play_music(music_file)
except KeyboardInterrupt:
    # if user hits Ctrl/C then exit
    # (works only in console mode)
    pygame.mixer.music.fadeout(1000)
    pygame.mixer.music.stop()
    raise SystemExit

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Embed and Play Midi Music in your Code (Python)