def transcode_flacs(flaclist, prefs):
if not prefs['output_path'] and prefs['output_type']:
raise Error('must specify output path and type')
xfmmod = import_xfm(prefs['output_type'])
xfmmod.outpath = prefs['output_path']
if not xfmmod.ready():
raise Error('%s module failed self-tests' % prefs['output_type'])
print 'output type is %s' % xfmmod.description
artdir = tempfile.mkdtemp('', 'flacart.')
joblist = []
class EncodeJob:
pass
for f in flaclist:
for c, t in enumerate(f.tracks):
j = EncodeJob()
j.tracknum = c + 1
j.artist = f.artist
j.title = t or 'Track %d' % j.tracknum
j.album = f.album
j.flacfile = f.filename
j.coverart = f.extractThumbnail(artdir)
fname = '%02d %s.%s' % (j.tracknum, t, xfmmod.extension)
j.outfile = os.path.join(prefs['output_path'],
flaclib.filequote(f.artist),
flaclib.filequote(f.album),
flaclib.filequote(fname))
j.failures = 0
if not os.path.isfile(j.outfile): joblist.append(j)
num_threads = prefs.get('threads', 1)
print 'Prepared %d jobs' % len(joblist)
if num_threads > 3:
print 'Randomizing jobs to reduce I/O bottlenecks'
random.shuffle(joblist)
jobq = Queue.Queue()
while joblist:
jobq.put(joblist.pop())
bag_o_threads = set()
while len(bag_o_threads) < prefs.get('threads', 1):
t = TranscodeWorker(jobq, xfmmod, len(bag_o_threads))
t.start()
bag_o_threads.add(t)
# we wait for all the threads to exit, rather than wait for the
# queue to be empty, because the worker threads might crash.
while bag_o_threads:
t = bag_o_threads.pop()
t.join()
for t in f.tracks:
c += 1
j = EncodeJob()
j.artist = f.artist
j.title = t or 'Track %d' % c
j.album = f.album
j.tracknum = c
j.flacfile = f.filename
try:
j.coverart = f.extractThumbnail(artdir)
except flaclib.MetaflacFailed:
j.coverart = None
# j.listindex = f.listindex
fname = '%02d - %s.%s' % (c, t, xfmmod.extension)
j.outfile = os.path.join(output_path,
flaclib.filequote(f.artist),
flaclib.filequote(f.album),
flaclib.filequote(fname))
j.failures = 0
if not os.path.isfile(j.outfile): jobs.append(j)
print 'Prepared %d jobs' % len(jobs)
while jobs:
j = jobs.pop()
print j.outfile
child = os.fork()
if child == 0:
# encodeFile() is expected to exec an encoder process and
# exit with a status code.
xfmmod.encodeFile(j)
assert False, 'Unpossible! encodeFile() returned!'
def OnIdle(self, e):
"""
Note that OnIdle() used to be installed as a wxWidgets "idle"
handler, but that never worked reliably, so it is now fired from a
timer and is thus misnamed.
OnIdle() does different things depending on the current state:
nothing in STATE_IDLE, or keep an eye on the child process
doing the actual work in STATE_RIPPING or STATE_ENCODING.
"""
if self.state == STATE_IDLE:
return
elif self.state == STATE_CANCELLED:
# kill child process, delete work directory, return to idle state
wx.LogMessage("cancelled by user request")
os.kill(self.child.pid, signal.SIGTERM)
self.cleanUpWorkDir()
self.setUIState(STATE_IDLE)
self.timer.Stop()
del self.child
del self.childbuffer
return
# if we got here, we are waiting on either a ripper or encoder child
self.updateProgress()
ret = self.child.poll()
if ret == None:
# child still running; just wait
return
# child exited: state change of some kind
if self.state == STATE_RIPPING:
if ret == 0:
# setting idle state sooner messes up lblProgress text
self.setUIState(STATE_IDLE) # or idle handler will puke exceptions
del self.child
self.childbuffer = ""
wx.LogMessage("cdparanoia finished successfully")
# rip went ok, now set up the flac process and change state to
# STATE_ENCODING
if self.chkEject.GetValue():
cmd = ["eject"]
if self.cddevice:
cmd.append(self.cddevice)
self.runCommand(cmd)
t = self.txtTags.GetValue()
t += "RIPSTATUS=" + paranoia.getFinalStatus() + "\n"
self.txtTags.SetValue(t)
info = cdinfo()
info.parseFromTags(self.txtTags.GetValue())
if not (info.artist and info.album):
wx.LogError("missing artist or album tag; can't continue")
return
f = flaclib.filequote(info.artist + " - " + info.album + ".flac")
wx.LogMessage("output file is %s" % f)
self.outfile = os.path.join(self.txtOutPath.GetValue(), f)
self.goToWorkDir()
cmd = [
flaccfg.BIN_FLAC,
"-o",
self.outfile,
"--delete-input-file",
"-V",
"--padding",
"262144",
"cdda.wav",
]
self.child = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
wx.LogMessage("spawned flac process %d" % self.child.pid)
self.setUIState(STATE_ENCODING)
else:
self.setUIState(STATE_IDLE)
del self.child
self.childbuffer = ""
wx.LogMessage("cdparanoia exited with status %s" % ret)
wx.LogMessage("Not cleaning up work directory %s" % self.workdir)
elif self.state == STATE_ENCODING:
self.setUIState(STATE_IDLE)
del self.child
self.childbuffer = ""
if ret == 0:
wx.LogMessage("encoder finished successfully")
else:
wx.LogError("encoder exited with status %s" % ret)
# use metaflac to load tags from text box. We could have done
# this with many -T arguments to flac, but then we would not
# be able to edit them while the encoding is going on.
wx.LogMessage("inserting tags")
self.goToWorkDir()
open("tags", "w").write(self.txtTags.GetValue().encode("utf8"))
self.runCommand([flaccfg.BIN_METAFLAC, "--import-tags-from=tags", self.outfile])
wx.LogMessage("inserting cuesheet")
self.runCommand([flaccfg.BIN_METAFLAC, "--import-cuesheet-from=cue", self.outfile])
if self.coverart:
wx.LogMessage("inserting cover art image")
self.runCommand([flaccfg.BIN_METAFLAC, "--import-picture-from", self.coverart, self.outfile])
del self.outfile
if not TESTMODE:
self.cleanUpWorkDir()
return
def OnIdle(self, e):
"""
Note that OnIdle() used to be installed as a wxWidgets "idle"
handler, but that never worked reliably, so it is now fired from a
timer and is thus misnamed.
OnIdle() does different things depending on the current state:
nothing in STATE_IDLE, or keep an eye on the child process
doing the actual work in STATE_RIPPING or STATE_ENCODING.
"""
if self.state == STATE_IDLE:
return
elif self.state == STATE_CANCELLED:
# kill child process, delete work directory, return to idle state
wx.LogMessage("cancelled by user request")
os.kill(self.child.pid, signal.SIGTERM)
self.cleanUpWorkDir()
self.setUIState(STATE_IDLE)
self.timer.Stop()
del self.child
del self.childbuffer
return
# if we got here, we are waiting on either a ripper or encoder child
self.updateProgress()
ret = self.child.poll()
if ret == None:
# child still running; just wait
return
# child exited: state change of some kind
if self.state == STATE_RIPPING:
if ret == 0:
# setting idle state sooner messes up lblProgress text
self.setUIState(
STATE_IDLE) # or idle handler will puke exceptions
del self.child
self.childbuffer = ""
wx.LogMessage("cdparanoia finished successfully")
# rip went ok, now set up the flac process and change state to
# STATE_ENCODING
if self.chkEject.GetValue():
cmd = ['eject']
if self.cddevice: cmd.append(self.cddevice)
self.runCommand(cmd)
t = self.txtTags.GetValue()
t += "RIPSTATUS=" + paranoia.getFinalStatus() + "\n"
self.txtTags.SetValue(t)
info = cdinfo()
info.parseFromTags(self.txtTags.GetValue())
if not (info.artist and info.album):
wx.LogError("missing artist or album tag; can't continue")
return
f = flaclib.filequote(info.artist + " - " + info.album +
".flac")
wx.LogMessage("output file is %s" % f)
self.outfile = os.path.join(self.txtOutPath.GetValue(), f)
self.goToWorkDir()
cmd = [
flaccfg.BIN_FLAC, '-o', self.outfile,
'--delete-input-file', '-V', '--padding', '262144',
'cdda.wav'
]
self.child = subprocess.Popen(cmd,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT)
wx.LogMessage("spawned flac process %d" % self.child.pid)
self.setUIState(STATE_ENCODING)
else:
self.setUIState(STATE_IDLE)
del self.child
self.childbuffer = ""
wx.LogMessage("cdparanoia exited with status %s" % ret)
wx.LogMessage("Not cleaning up work directory %s" \
% self.workdir)
elif self.state == STATE_ENCODING:
self.setUIState(STATE_IDLE)
del self.child
self.childbuffer = ""
if ret == 0:
wx.LogMessage("encoder finished successfully")
else:
wx.LogError("encoder exited with status %s" % ret)
# use metaflac to load tags from text box. We could have done
# this with many -T arguments to flac, but then we would not
# be able to edit them while the encoding is going on.
wx.LogMessage("inserting tags")
self.goToWorkDir()
open("tags", "w").write(self.txtTags.GetValue().encode('utf8'))
self.runCommand([
flaccfg.BIN_METAFLAC, '--import-tags-from=tags', self.outfile
])
wx.LogMessage("inserting cuesheet")
self.runCommand([
flaccfg.BIN_METAFLAC, '--import-cuesheet-from=cue',
self.outfile
])
if self.coverart:
wx.LogMessage("inserting cover art image")
self.runCommand([
flaccfg.BIN_METAFLAC, '--import-picture-from',
self.coverart, self.outfile
])
del self.outfile
if not TESTMODE: self.cleanUpWorkDir()
return
