gistfile1.sc

#!/usr/bin/env python
import DiscID, CDDB, sys, os
from eyeD3.tag import *

def disc_id(track):
    frame2array = lambda(f): (f/(60*75), (f/75)%60, f%75)
    last = len(track) - 1
    track_frames = []
    checksum = 0
    for i in range(1, last + 1):
        (min, sec, frame) = frame2array(track[i - 1])
        checksum = checksum + DiscID.cddb_sum(min*60 + sec)
        track_frames.append(min*60*75 + sec*75 + frame)
    (min, sec, frame) = frame2array(track[-1])
    track_frames.append(min*60*75 + sec*75 + frame)
    total_time = (track_frames[-1] / 75) - (track_frames[0] / 75)
    discid = ((long(checksum) % 0xff) << 24 | total_time << 8 | last)
    return [discid, last] + track_frames[:-1] + [ track_frames[-1] / 75 ]

files = sys.argv[1:]
audiofiles = map(lambda f: eyeD3.tag.Mp3AudioFile(f), files)
tracks = map(lambda audiofile: audiofile.getPlayTime() * 75, audiofiles)
totaltime = 2*75
tracks2 = [totaltime]
for length in tracks:
    totaltime += length
    tracks2.append(totaltime)

disc_id = disc_id(tracks2)

print disc_id
print "Disc ID: %08lx Num tracks: %d" % (disc_id[0], disc_id[1])

(query_stat, query_info) = CDDB.query(disc_id,
        server_url='http://freedbtest.dyndns.org/~cddb/cddb.cgi')

if query_stat == 200:
    print ("success!\nQuerying CDDB for track info of `%s'... " %
           query_info['title']),
    (read_stat, read_info) = CDDB.read(query_info['category'],
                                       query_info['disc_id'])
    if read_stat == 210:
        print "success!"
        for i in range(0, disc_id[1]):
            print "Track %.02d: %s" % (i+1, read_info['TTITLE' + `i`])
    else:
        print "failure getting track info, status: %i" % read_stat
elif query_stat == 210 or query_stat == 211:
    print "multiple matches found! Matches are:"
    for i in query_info:
        print "ID: %s Category: %s Title: %s" % \
              (i['disc_id'], i['category'], i['title'])
else:
    print "failure getting disc info, status %i" % query_stat