/usr/bin/track2cdda is in audiotools 3.1.1-1+b1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# Audio Tools, a module and set of tools for manipulating audio data
# Copyright (C) 2007-2015 Brian Langenberger
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
import os
import os.path
import sys
import tempfile
import subprocess
import audiotools
import audiotools.toc
import audiotools.text as _
from audiotools.decoders import SameSample
MAX_CPUS = audiotools.MAX_JOBS
def convert_to_wave(progress, audiofile, wave_filename):
try:
if (((audiofile.sample_rate() == 44100) and
(audiofile.channels() == 2) and
(audiofile.bits_per_sample() == 16))): # already CD quality
audiofile.convert(target_path=wave_filename,
target_class=audiotools.WaveAudio,
progress=progress)
else: # convert to CD quality
pcm = audiotools.PCMReaderProgress(
pcmreader=audiotools.PCMConverter(
audiofile.to_pcm(),
sample_rate=44100,
channels=2,
channel_mask=audiotools.ChannelMask.from_channels(2),
bits_per_sample=16),
total_frames=(audiofile.total_frames() *
44100 // audiofile.sample_rate()),
progress=progress)
audiotools.WaveAudio.from_pcm(wave_filename, pcm)
pcm.close()
except audiotools.EncodingError as err:
pass
except KeyboardInterrupt:
pass
def CD_reader_size(audiofile):
"""returns a (PCMReader, total_pcm_frames) of track in CD format"""
if (((audiofile.bits_per_sample() == 16) and
(audiofile.channels() == 2) and
(audiofile.sample_rate() == 44100) and
audiofile.lossless())):
return (audiofile.to_pcm(), audiofile.total_frames())
else:
# if input audio isn't CD quality or lossless,
# pull audio data into RAM so PCM frame size
# can be calculated exactly
pcm_frames = []
audiotools.transfer_data(
audiotools.PCMConverter(audiofile.to_pcm(),
44100, 2, 0x3, 16).read,
pcm_frames.append)
return (PCMBuffer(pcm_frames, 44100, 2, 0x3, 16),
sum(f.frames for f in pcm_frames))
class PCMBuffer(object):
def __init__(self, pcm_frames,
sample_rate, channels, channel_mask, bits_per_sample):
from collections import deque
self.pcm_frames = deque(pcm_frames)
self.sample_rate = sample_rate
self.channels = channels
self.channel_mask = channel_mask
self.bits_per_sample = bits_per_sample
def read(self, frames):
if self.pcm_frames is not None:
try:
return self.pcm_frames.popleft()
except IndexError:
from audiotools.pcm import empty_framelist
return empty_framelist(self.channels, self.bits_per_sample)
else:
raise ValueError()
def close(self):
self.pcm_frames = None
if (__name__ == '__main__'):
import argparse
parser = argparse.ArgumentParser(description=_.DESCRIPTION_TRACK2CD)
parser.add_argument("--version",
action="version",
version="Python Audio Tools %s" % (audiotools.VERSION))
parser.add_argument("-V", "--verbose",
dest="verbosity",
choices=audiotools.VERBOSITY_LEVELS,
default=audiotools.DEFAULT_VERBOSITY,
help=_.OPT_VERBOSE)
parser.add_argument("-c", "--cdrom",
dest="dev",
default=audiotools.DEFAULT_CDROM)
parser.add_argument("-s", "--speed",
dest="speed",
default=20,
type=int,
help=_.OPT_SPEED)
parser.add_argument("--cue",
dest="cuesheet",
metavar="FILENAME",
help=_.OPT_CUESHEET_TRACK2CD)
parser.add_argument("-j", "--joint",
type=int,
default=MAX_CPUS,
dest="max_processes",
help=_.OPT_JOINT)
parser.add_argument("filenames",
metavar="FILENAME",
nargs="+",
help=_.OPT_INPUT_FILENAME)
options = parser.parse_args()
msg = audiotools.Messenger(options.verbosity == "quiet")
if options.max_processes < 1:
msg.error(_.ERR_INVALID_JOINT)
sys.exit(1)
else:
max_processes = options.max_processes
write_offset = audiotools.config.getint_default("System",
"cdrom_write_offset",
0)
audiofiles = []
for filename in map(audiotools.Filename, options.filenames):
try:
audiofile = audiotools.open(str(filename))
if audiofile.__class__.supports_to_pcm():
audiofiles.append(audiofile)
else:
msg.error(_.ERR_UNSUPPORTED_TO_PCM %
{"filename": filename, "type": audiofile.NAME})
sys.exit(1)
except audiotools.UnsupportedFile:
msg.error(_.ERR_UNSUPPORTED_FILE % (filename,))
sys.exit(1)
except audiotools.InvalidFile as err:
msg.error(str(err))
sys.exit(1)
except IOError:
msg.error(_.ERR_OPEN_IOERROR % (filename,))
sys.exit(1)
if len(audiofiles) < 1:
msg.error(_.ERR_FILES_REQUIRED)
sys.exit(1)
if (((len(audiofiles) == 1) and
(audiofiles[0].get_cuesheet() is not None))):
# writing a single file with an embedded cuesheet
# so extract its contents to wave/cue and call cdrdao
if not audiotools.BIN.can_execute(audiotools.BIN['cdrdao']):
msg.error(_.ERR_NO_CDRDAO)
msg.info(_.ERR_GET_CDRDAO)
sys.exit(1)
cuesheet = audiofiles[0].get_cuesheet()
temptoc = tempfile.NamedTemporaryFile(suffix='.toc')
tempwav = tempfile.NamedTemporaryFile(suffix='.wav')
audiotools.toc.write_tocfile(
cuesheet,
audiotools.Filename(tempwav.name).__unicode__(),
temptoc)
temptoc.flush()
progress = audiotools.SingleProgressDisplay(
msg, _.LAB_CONVERTING_FILE)
try:
if (((audiofiles[0].sample_rate() == 44100) and
(audiofiles[0].channels() == 2) and
(audiofiles[0].bits_per_sample() == 16))):
# already CD quality, so no additional conversion necessary
temptrack = audiotools.WaveAudio.from_pcm(
tempwav.name,
audiotools.PCMReaderProgress(
pcmreader=(audiofiles[0].to_pcm() if
(write_offset == 0) else
audiotools.PCMReaderWindow(
audiofiles[0].to_pcm(),
write_offset,
audiofiles[0].total_frames())),
total_frames=audiofiles[0].total_frames(),
progress=progress.update))
else:
# not CD quality, so convert and adjust total frames as needed
temptrack = audiotools.WaveAudio.from_pcm(
tempwav.name,
audiotools.PCMReaderProgress(
pcmreader=audiotools.PCMConverter(
pcmreader=(audiofiles[0].to_pcm() if
(write_offset == 0) else
audiotools.PCMReaderWindow(
audiofiles[0].to_pcm(),
write_offset,
audiofiles[0].total_frames())),
sample_rate=44100,
channels=2,
channel_mask=0x3,
bits_per_sample=16),
total_frames=(audiofiles[0].total_frames() *
44100 //
audiofiles[0].sample_rate()),
progress=progress.update))
except KeyboardInterrupt:
progress.clear_rows()
tempwav.close()
msg.error(_.ERR_CANCELLED)
sys.exit(1)
progress.clear_rows()
os.chdir(os.path.dirname(tempwav.name))
cdrdao_args = [audiotools.BIN["cdrdao"], "write"]
cdrdao_args.append("--device")
cdrdao_args.append(options.dev)
cdrdao_args.append("--speed")
cdrdao_args.append(str(options.speed))
cdrdao_args.append(temptoc.name)
if options.verbosity != 'quiet':
subprocess.call(cdrdao_args)
else:
devnull = open(os.devnull, 'wb')
sub = subprocess.Popen(cdrdao_args,
stdout=devnull,
stderr=devnull)
sub.wait()
devnull.close()
temptoc.close()
tempwav.close()
elif options.cuesheet is not None:
# writing tracks with a cuesheet,
# so combine them into a single wave/cue and call cdrdao
if not audiotools.BIN.can_execute(audiotools.BIN['cdrdao']):
msg.error(_.ERR_NO_CDRDAO)
msg.info(_.ERR_GET_CDRDAO)
sys.exit(1)
if len({f.sample_rate() for f in audiofiles}) != 1:
msg.error(_.ERR_SAMPLE_RATE_MISMATCH)
sys.exit(1)
if len({f.channels() for f in audiofiles}) != 1:
msg.error(_.ERR_CHANNEL_COUNT_MISMATCH)
sys.exit(1)
if len({f.bits_per_sample() for f in audiofiles}) != 1:
msg.error(_.ERR_BPS_MISMATCH)
sys.exit(1)
try:
cuesheet = audiotools.read_sheet(options.cuesheet)
except audiotools.SheetException as err:
msg.error(err)
sys.exit(1)
# ensure sheet is formatted for CD images
if not cuesheet.image_formatted():
msg.error(_.ERR_CUE_INVALID_FORMAT)
sys.exit(1)
# ensure sheet fits the tracks it's given
if len(cuesheet) != len(audiofiles):
msg.error(_.ERR_CUE_INSUFFICIENT_TRACKS)
sys.exit(1)
for (input_track, cuesheet_track) in zip(audiofiles,
cuesheet.track_numbers()):
track_length = cuesheet.track_length(cuesheet_track)
if ((track_length is not None) and
(track_length != input_track.seconds_length())):
msg.error(_.ERR_CUE_LENGTH_MISMATCH % (cuesheet_track))
sys.exit(1)
tempcue = tempfile.NamedTemporaryFile(suffix='.cue')
tempwav = tempfile.NamedTemporaryFile(suffix='.wav')
audiotools.toc.write_tocfile(
cuesheet,
audiotools.Filename(tempwav.name).__unicode__(),
tempcue)
tempcue.flush()
input_frames = (int(audiofiles[0].sample_rate() * cuesheet.pre_gap()) +
sum([af.total_frames() for af in audiofiles]))
if (((audiofiles[0].sample_rate() == 44100) and
(audiofiles[0].channels() == 2) and
(audiofiles[0].bits_per_sample() == 16))):
pcmreader = audiotools.PCMCat(
[SameSample(
sample=0,
total_pcm_frames=int(44100 * cuesheet.pre_gap()),
sample_rate=44100,
channels=2,
channel_mask=0x3,
bits_per_sample=16)] +
[af.to_pcm() for af in audiofiles])
output_frames = input_frames
else:
# this presumes a cuesheet and non-CD audio
# though theoretically possible, it's difficult to
# envision a case in which this happens
pcmreader = audiotools.PCMConverter(
pcmreader=audiotools.PCMCat(
[SameSample(
sample=0,
total_pcm_frames=int(audiofiles[0].sample_rate() *
cuesheet.pre_gap()),
channels=audiofiles[0].channels(),
channel_mask=int(audiofiles[0].channel_mask()),
bits_per_sample=audiofiles[0].bits_per_sample())] +
[af.to_pcm() for af in audiofiles]),
sample_rate=44100,
channels=2,
channel_mask=0x3,
bits_per_sample=16)
output_frames = (input_frames * 44100 //
audiofiles[0].sample_rate())
progress = audiotools.SingleProgressDisplay(
msg, _.LAB_CONVERTING_FILE)
try:
if write_offset == 0:
temptrack = audiotools.WaveAudio.from_pcm(
tempwav.name,
audiotools.PCMReaderProgress(
pcmreader=pcmreader,
total_frames=output_frames,
progress=progress.update))
else:
temptrack = audiotools.WaveAudio.from_pcm(
tempwav.name,
audiotools.PCMReaderProgress(
pcmreader=audiotools.PCMReaderWindow(pcmreader,
write_offset,
input_frames),
total_frames=output_frames,
progress=progress.update))
except KeyboardInterrupt:
progress.clear_rows()
tempwav.close()
msg.error(_.ERR_CANCELLED)
sys.exit(1)
progress.clear_rows()
os.chdir(os.path.dirname(tempwav.name))
cdrdao_args = [audiotools.BIN["cdrdao"], "write",
"--device", options.dev,
"--speed", str(options.speed),
tempcue.name]
if options.verbosity != 'quiet':
subprocess.call(cdrdao_args)
else:
devnull = open(os.devnull, 'wb')
sub = subprocess.Popen(cdrdao_args,
stdout=devnull,
stderr=devnull)
sub.wait()
devnull.close()
tempcue.close()
tempwav.close()
else:
# writing tracks without a cuesheet,
# so extract them to waves and call cdrecord
if not audiotools.BIN.can_execute(audiotools.BIN['cdrecord']):
msg.error(_.ERR_NO_CDRECORD)
msg.info(_.ERR_GET_CDRECORD)
sys.exit(1)
exec_args = [audiotools.BIN['cdrecord'],
"-pad",
"-speed", str(options.speed),
"-dev", options.dev,
"-dao", "-audio"]
temp_pool = []
wave_files = []
if write_offset == 0:
queue = audiotools.ExecProgressQueue(msg)
for audiofile in audiofiles:
if isinstance(audiofile, audiotools.WaveAudio):
wave_files.append(audiofile.filename)
else:
filename = audiotools.Filename(audiofile.filename)
f = tempfile.mkstemp(suffix='.wav')
temp_pool.append(f)
wave_files.append(f[1])
queue.execute(
function=convert_to_wave,
progress_text=filename.__unicode__(),
completion_output=_.LAB_TRACK2CD_CONVERTED % {
"filename": filename},
audiofile=audiofile,
wave_filename=f[1])
try:
queue.run(max_processes)
except KeyboardInterrupt:
msg.error(_.ERR_CANCELLED)
for (fd, f) in temp_pool:
os.close(fd)
os.unlink(f)
sys.exit(1)
else:
# a list of (PCMReader, total_pcm_frames) pairs
try:
lossless_tracks = [CD_reader_size(t) for t in audiofiles]
realigned_stream = audiotools.BufferedPCMReader(
audiotools.PCMReaderWindow(
audiotools.PCMCat([t[0] for t in lossless_tracks]),
write_offset,
sum([t[1] for t in lossless_tracks])))
for audiofile in audiofiles:
filename = audiotools.Filename(audiofile.filename)
progress = audiotools.SingleProgressDisplay(
msg, filename.__unicode__())
f = tempfile.mkstemp(suffix=".wav")
temp_pool.append(f)
wave = audiotools.WaveAudio.from_pcm(
f[1],
audiotools.PCMReaderProgress(
audiotools.LimitedPCMReader(
realigned_stream, audiofile.total_frames()),
audiofile.total_frames(),
progress.update))
wave_files.append(wave.filename)
progress.clear_rows()
msg.info(_.LAB_TRACK2CD_CONVERTED % {"filename": filename})
except KeyboardInterrupt:
progress.clear_rows()
msg.error(_.ERR_CANCELLED)
for (fd, f) in temp_pool:
os.close(fd)
os.unlink(f)
sys.exit(1)
try:
for wave in wave_files:
audiotools.open(wave).verify()
except (audiotools.UnsupportedFile,
audiotools.InvalidFile,
IOError):
msg.error(_.ERR_TRACK2CD_INVALIDFILE)
sys.exit(1)
exec_args += wave_files
if options.verbosity != 'quiet':
subprocess.call(exec_args)
else:
devnull = open(os.devnull, 'wb')
sub = subprocess.Popen(exec_args,
stdout=devnull,
stderr=devnull)
sub.wait()
devnull.close()
for (fd, f) in temp_pool:
os.close(fd)
os.unlink(f)
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