#!/usr/bin/env python
## this is a dirty, lame hack by a dirty, lame guy 
## - reads a .m3u file (e.g. generated by xmms)
## - converts any audiofile to wavefiles using incredible mplayer 
## - provides normalized wavefiles using transcode
## - burns an audio-cd
# !!feel free to copy, modify, redistribute and at most _use_ it!!
# AGE/02004

import os,sys
import string

#recorder = "ATAPI:0,0,0" #fuer cdrecord mit 2.6 kernel und ide brenner
recorder = "0,0,0" #fuer cdrecord mit 2.6 kernel und ide brenner

__doc__ = """usage: %s file.m3u wav-destination""" % sys.argv[0]

################
### init checks
try:
	m3ufile = sys.argv[1]
	wavdir = sys.argv[2]
	if not os.access(wavdir,os.W_OK) : 
		print "%s not writeable" % wavdir
		sys.exit(3)
except:
	print >>sys.stderr, __doc__
	sys.exit(1)


print "\nDirty, lame hack in action:\n"
################
### m3u einlesen
try:
	temp = open(m3ufile,"r")
	m3u = temp.read()
	temp.close()
except:
	print "I can't find the .m3u file"
	sys.exit(2)
# M's Kommentar Schnibbler
notfound = 0
while notfound == 0:
	startpos = string.find(m3u,"#")
	if startpos <0:
		notfound +=1
	endpos = string.find(m3u,"\n",startpos)
	cutme = m3u[startpos:endpos]
	m3u = string.replace(m3u,cutme,"")

valuepairs = string.split(m3u,"\n")
m3u = []
for i in valuepairs:
	if i != "":
		m3u.append(i)
# im m3u-array stehen jetzt hoffentlich ;) nur noch pfadangaben
# checken ob's stimmt & und ob alle files existieren
abort = 0
for i in m3u:
	if not os.path.exists(i):
		abort = abort + 1
		print "===> not found: %s " % i
		m3u.remove(i)
if abort > 0:
	print "\nI can't find %i audiofiles - giving up" % abort
	#TODO
	# abfrage ob ohne die files mit gekuertzter m3u weiter gemacht werden
	# soll..
	sys.exit(0)
else:	
	print "\nI found %i audiofiles to convert, normalize and burn:" % len(m3u)


##############
### ogg/mp3 -> wav
count = 0
for file in m3u:
	count+=1
	# fuehrende nullen ranballern
	#if count < 10:
		#count0 = "0"+str(count)
	#else:
		#count0 = str(count)
	count0 = "%.3i" % count
	command = "mplayer  \""+file+"\" -vc dummy -vo null -ao pcm -aofile "+wavdir+"/"+str(count0)+".wav &> /dev/null"
	print "\nexec: "+command
	session = os.popen(command,"w")
	session.write("")
	session.flush()
	session.close()

#########################
### wav -> normalized wav
wavefiles = os.listdir(wavdir)
for wave in wavefiles:
	command = "transcode -J normalize -y wav -i "+wavdir+"/"+wave+" -m "+wavdir+"/"+ wave+".norm &> /dev/null"
	print "\nexec: "+command
	session = os.popen(command,"w")
	session.write("")
	session.flush()
	session.close()

##################
### wav -> audiocd
command = "sudo cdrecord -v -dev="+recorder+" -pad -audio "+wavdir+"/*.wav.norm"
print "\nexec: "+command
print "\nwarning: If this fails, try to change the \"recorder\" variable!"
session = os.popen(command,"w")
session.write("")
session.flush()
session.close()

#print "\n That's it! Eine Stunde coden und dafuer jetzt den Sommer geniessen..."
print "done"