Embed and Play Midi Music in your Code (Python)

What type of MIDI files do Python recognize?
This programme does not work in Python 2.7
I changed the fole name to one which is in the directory. Still it says file not found

Editor's note ...
Works just fine with Python 2.7.3, also if you just want to play existing MIDI files see
http://www.daniweb.com/software-development/python/code/454835/let-pygame-play-your-midi-or-mp3-files

Are you sure that you initialize the midi system like in this snippet before playing the file?

Thak you for your kind response. I am not a very good coder. I am still learning so I don't understand your question. How do I do initialize the MIDI system? Also my MIDI playback is on Edirol SOund Canvas software synth which is configured to play ALL MIDI file on my computer. How do I initialize the MIDI system? What do I have to do? What is actually happening is that the MIDI files are not being recognized. None of them. I keep getting the error message "file not found'. Please help if you can.

lines 114 to 121 in vegaseat's code

It isn't necessary to write the file out to the disk and reread it. Just create a StringIO with the binary contents and pass that to play_music(). First, if you copied the program source file from the internet, you might want to do this:

mid64 = mid64.replace(" ","").replace("\n","")

to remove spaces and end-of-lines from the music data string. Then after this line:

fish = base64.b64decode(mid64)

add:

music_file = StringIO.StringIO(fish)

and pass that to

play_music(music_file)

(of course, don't forget to "import StringIO" at the top of the file!)

Actually
base64.b64decode()
takes care of trailing newline characters

Thanks RufusVS, you gave me the push to finally update this little gem to work with both versions of Python ...

""" PG_MidiBase64_py23.py
experiments with module pygame from: http://www.pygame.org/
play an embedded midi music file (base64 encoded)

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

Python2 code ...
import base64
mid_file = "FishPolka.mid"
b64_str = base64.encodestring(open(mid_file, 'rb').read())
print("mid64='''\\\n" + b64_str + "'''")

Python3 code ...
import base64
mid_file = "FishPolka.mid"
b64_str = base64.encodestring(open(mid_file, 'rb').read()).decode("utf8")
print("mid64='''\\\n" + b64_str + "'''")

updated to work with Python2 and Python3 by  vegaseat  16may2013
"""

import pygame
import base64
import io

def play_music(music_file):
    """
    stream music with mixer.music module in blocking manner
    this will stream the sound from disk while playing
    """
    pygame.mixer.music.load(music_file)
    clock = pygame.time.Clock()
    pygame.mixer.music.play()
    # check if playback has finished
    while pygame.mixer.music.get_busy():
        clock.tick(30)


mid64='''\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'''

# create a memory file object
try:
    # Python27
    midi_str = base64.b64decode(mid64)
    music_file = io.BytesIO(midi_str)
except TypeError:
    # Python3
    midi_bytes = base64.b64decode(mid64.encode())
    music_file = io.BytesIO(midi_bytes)

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 object from memory
    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

Does the short program have to be separate? I want to do this for multiple midi files in an iteration but it doesn't work because it just prints out '\' instead of all the numbers.

Please help?

William_27, I think you misinterpret what the "short program" is used for.

The short program is run separately to create a python source code snippet which is the base64
encoding (in this case, stored in the variable mid64). This code snipped is pasted into the source
code of the playing program (so you don't have to read the .mid file from disk).

If you are doing this for multiple midi files in an iteration, you could put the mid64 strings into an
array, for example.

Your posting is 11 months old. Have you solve this by now, or dropped it?