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Small script to sync up ipods to mpd playlists.

Requires libgpod's python bindings and python-mpd.

#!/usr/bin/env python

# Python mpd syncer
# Copyright (c) 2009 Matan Peled <>

import os

# Constants

# iPod mount point (make sure it's properly mounted)
MOUNT_POINT = '/mnt/ipod'
# Safety factor, in gigabytes

# mpd host, port
MPD_CONNECTION = ('localhost', 6600, )

# mpd root directory
MPD_ROOT = os.path.expanduser('~/mp3')

# Playlists (mpd_name, ipod_name)
PLAYLISTS = [('ipod_Rock', 'Rock'),
# Covers dir
COVERS_DIR = os.path.expanduser('~/.covers/')

# Code

import gpod
import mpd

def ipod_capacity(mountpoint = MOUNT_POINT):
    if not os.path.exists(mountpoint):
        raise ValueError("Mount point does not exist")
    device = gpod.itdb_device_new()
    gpod.itdb_device_set_mountpoint(device, mountpoint)
    info = gpod.itdb_device_get_ipod_info(device)
    return int((info.capacity - SIZE_FUDGE) * 1024 * 1024 * 1024)

def compare_tracks(a, b):
    return (a['size'] == b['size'] and
            a['title'] == b['title'] and
            a['artist'] == b['artist'] and
            a['album'] == b['album'])

class FreeSpaceException(Exception): pass

class iPod(object):
    def __init__(self, path = MOUNT_POINT):
        self.path = path
        self.db = gpod.Database(self.path)

    # simplistic, but OK
    def used_space(self):
        size = 0
        for track in self.db.Master:
            size += track['size']
        for track in self.db.Podcasts:
            size += track['size']
        return size

    def free_space(self):
        return ipod_capacity(self.path) - self.used_space()

    def sync_playlist(self, name, tracks):
        for playlist in self.db.Playlists:
            if == name:
                for i, track in enumerate(tracks):
                    if i >= len(playlist):
                    if not compare_tracks(track, playlist[i]):
                        to_del = playlist[i]
                        playlist.add(track, pos = i)
                if len(playlist) - 1 > i:
                    for track in playlist[i + 1:]:
                return True
        playlist = self.db.new_Playlist(title = name)
        for track in tracks:
        return True

    def check_freespace(self, tracks):
        size = sum([ track['size'] for track in tracks ])
        return size < self.free_space()

    def close(self):

    def track_factory(self, filename):
        _track = gpod.Track(filename)
        for track in self.db.Master:
            if compare_tracks(_track, track):
                return track
        t = self.db.new_Track(filename = filename)
        t.set_coverart_from_file(os.path.join(COVERS_DIR, t['artist'],
                                              "%s.jpg" % (t['album'], )))
        return t

# mpd code (move to different file when it gets too complex)

def get_filenames(mpd_playlist):
    client = mpd.MPDClient()
    return [ os.path.join(MPD_ROOT, filename)
             for filename in client.listplaylist(mpd_playlist) ]

def sync(ipod, playlists):
    for mpd_playlist, ipod_playlist in playlists:
        tracks = [ ipod.track_factory(filename)
                   for filename in get_filenames(mpd_playlist) ]
        if not ipod.check_freespace(tracks):
            raise FreeSpaceException("Not enough free space!")
        ipod.sync_playlist(ipod_playlist, tracks)
    return True

def main():
    ipod = iPod(MOUNT_POINT)
    sync(ipod, PLAYLISTS)

if __name__ == '__main__':

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