a8da8d8fa2
Add the 150 frames for the leadin only to the CDDB calculation. Add methods to calculate AccurateRip id's and URL. * morituri/test/test_image_image.py: Add tests for it. * examples/ARcue.py: Show AccurateRip URL.
310 lines
9.0 KiB
Python
310 lines
9.0 KiB
Python
# -*- Mode: Python; test-case-name: morituri.test.test_image_image -*-
|
|
# vi:si:et:sw=4:sts=4:ts=4
|
|
|
|
# Morituri - for those about to RIP
|
|
|
|
# Copyright (C) 2009 Thomas Vander Stichele
|
|
|
|
# This file is part of morituri.
|
|
#
|
|
# morituri 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 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# morituri 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 morituri. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
"""
|
|
Wrap on-disk CD images based on the .cue file.
|
|
"""
|
|
|
|
import os
|
|
|
|
import gst
|
|
|
|
from morituri.common import task, crc
|
|
from morituri.image import cue
|
|
|
|
class Image:
|
|
def __init__(self, path):
|
|
"""
|
|
@param path: .cue path
|
|
"""
|
|
self._path = path
|
|
self.cue = cue.Cue(path)
|
|
self.cue.parse()
|
|
self._offsets = [] # 0 .. trackCount - 1
|
|
self._lengths = [] # 0 .. trackCount - 1
|
|
|
|
def getRealPath(self, path):
|
|
"""
|
|
Translate the .cue's FILE to an existing path.
|
|
"""
|
|
if os.path.exists(path):
|
|
return path
|
|
|
|
# .cue FILE statements have Windows-style path separators, so convert
|
|
tpath = os.path.join(*path.split('\\'))
|
|
# if the path is relative, make it absolute relative to the cue file
|
|
if tpath != os.path.abspath(tpath):
|
|
tpath = os.path.join(os.path.dirname(self._path), tpath)
|
|
|
|
noext, _ = os.path.splitext(tpath)
|
|
for ext in ['wav', 'flac']:
|
|
cpath = '%s.%s' % (noext, ext)
|
|
if os.path.exists(cpath):
|
|
return cpath
|
|
|
|
raise KeyError, "Cannot find file for %s" % path
|
|
|
|
def setup(self, runner):
|
|
"""
|
|
Do initial setup, like figuring out track lengths.
|
|
"""
|
|
verify = ImageVerifyTask(self)
|
|
runner.run(verify)
|
|
|
|
# calculate offset and length for each track
|
|
|
|
# CD's have a standard lead-in time of 2 seconds;
|
|
# checksums that use it should add it there
|
|
offset = self.cue.tracks[0].getIndex(1)[0]
|
|
|
|
for i in range(len(self.cue.tracks)):
|
|
self._offsets.append(offset)
|
|
length = self.cue.getTrackLength(self.cue.tracks[i])
|
|
if length == -1:
|
|
length = verify.lengths[i + 1]
|
|
self._lengths.append(length)
|
|
|
|
offset += length
|
|
|
|
def getTrackOffset(self, track):
|
|
return self._offsets[self.cue.tracks.index(track)]
|
|
|
|
def getTrackLength(self, track):
|
|
return self._lengths[self.cue.tracks.index(track)]
|
|
|
|
def _cddbSum(self, i):
|
|
ret = 0
|
|
while i > 0:
|
|
ret += (i % 10)
|
|
i /= 10
|
|
|
|
return ret
|
|
|
|
def getCDDBDiscId(self):
|
|
n = 0
|
|
|
|
for track in self.cue.tracks:
|
|
# CD's have a standard lead-in time of 2 seconds
|
|
# which gets added for CDDB disc id's
|
|
offset = self.getTrackOffset(track) + 2 * crc.DISC_FRAMES_PER_SECOND
|
|
seconds = offset / crc.DISC_FRAMES_PER_SECOND
|
|
n += self._cddbSum(seconds)
|
|
|
|
last = self.cue.tracks[-1]
|
|
leadout = self.getTrackOffset(last) + self.getTrackLength(last)
|
|
frameLength = leadout - self.getTrackOffset(self.cue.tracks[0])
|
|
t = frameLength / crc.DISC_FRAMES_PER_SECOND
|
|
|
|
value = (n % 0xff) << 24 | t << 8 | len(self.cue.tracks)
|
|
|
|
return "%08x" % value
|
|
|
|
def getAccurateRipIds(self):
|
|
"""
|
|
@rtype: two-tuple of (str, str)
|
|
"""
|
|
discId1 = 0
|
|
discId2 = 0
|
|
|
|
for i, track in enumerate(self.cue.tracks):
|
|
offset = self.getTrackOffset(track)
|
|
discId1 += offset
|
|
discId2 += (offset or 1) * (i + 1)
|
|
|
|
# also add end offsets
|
|
last = self.cue.tracks[-1]
|
|
leadout = self.getTrackOffset(last) + self.getTrackLength(last)
|
|
discId1 += leadout
|
|
discId2 += leadout * (len(self.cue.tracks) + 1)
|
|
|
|
discId1 &= 0xffffffff
|
|
discId2 &= 0xffffffff
|
|
|
|
return ("%08x" % discId1, "%08x" % discId2)
|
|
|
|
def getAccurateRipURL(self):
|
|
discId1, discId2 = self.getAccurateRipIds()
|
|
|
|
return "http://www.accuraterip.com/accuraterip/" \
|
|
"%s/%s/%s/dBAR-%.3d-%s-%s-%s.bin" % (
|
|
discId1[-1], discId1[-2], discId1[-3],
|
|
len(self.cue.tracks), discId1, discId2, self.getCDDBDiscId())
|
|
|
|
class MultiTask(task.Task):
|
|
"""
|
|
I perform multiple tasks.
|
|
I track progress of each individual task, going back to 0 for each task.
|
|
"""
|
|
|
|
description = 'Doing various tasks'
|
|
tasks = None
|
|
|
|
def addTask(self, task):
|
|
if self.tasks is None:
|
|
self.tasks = []
|
|
self.tasks.append(task)
|
|
|
|
def start(self, runner):
|
|
task.Task.start(self, runner)
|
|
|
|
# initialize task tracking
|
|
self._task = 0
|
|
self.__tasks = self.tasks[:]
|
|
self._generic = self.description
|
|
|
|
self._next()
|
|
|
|
def _next(self):
|
|
# start next task
|
|
self.progress = 0.0 # reset progress for each task
|
|
task = self.__tasks[0]
|
|
del self.__tasks[0]
|
|
self._task += 1
|
|
self.description = "%s (%d of %d) ..." % (
|
|
self._generic, self._task, len(self.tasks))
|
|
task.addListener(self)
|
|
task.start(self.runner)
|
|
|
|
### listener methods
|
|
def started(self, task):
|
|
pass
|
|
|
|
def progressed(self, task, value):
|
|
self.setProgress(value)
|
|
|
|
def stopped(self, task):
|
|
if not self.__tasks:
|
|
self.stop()
|
|
return
|
|
|
|
# pick another
|
|
self._next()
|
|
|
|
|
|
class AudioRipCRCTask(MultiTask):
|
|
"""
|
|
I calculate the AudioRip CRC's of all tracks.
|
|
"""
|
|
|
|
description = "CRC'ing tracks"
|
|
|
|
def __init__(self, image):
|
|
self._image = image
|
|
cue = image.cue
|
|
self.crcs = []
|
|
|
|
for trackIndex, track in enumerate(cue.tracks):
|
|
index = track._indexes[1]
|
|
length = cue.getTrackLength(track)
|
|
file = index[1]
|
|
offset = index[0]
|
|
|
|
path = image.getRealPath(file.path)
|
|
crctask = crc.CRCAudioRipTask(path,
|
|
trackNumber=trackIndex + 1, trackCount=len(cue.tracks),
|
|
frameStart=offset * crc.FRAMES_PER_DISC_FRAME,
|
|
frameLength=length * crc.FRAMES_PER_DISC_FRAME)
|
|
self.addTask(crctask)
|
|
|
|
def stop(self):
|
|
self.crcs = [t.crc for t in self.tasks]
|
|
MultiTask.stop(self)
|
|
|
|
class AudioLengthTask(task.Task):
|
|
"""
|
|
I calculate the length of a track in audio frames.
|
|
|
|
@ivar length: length of the decoded audio file, in audio frames.
|
|
"""
|
|
|
|
length = None
|
|
|
|
def __init__(self, path):
|
|
self._path = path
|
|
|
|
def debug(self, *args, **kwargs):
|
|
return
|
|
print args, kwargs
|
|
|
|
def start(self, runner):
|
|
task.Task.start(self, runner)
|
|
self._pipeline = gst.parse_launch('''
|
|
filesrc location="%s" !
|
|
decodebin ! audio/x-raw-int !
|
|
fakesink name=sink''' % self._path)
|
|
self.debug('pausing')
|
|
self._pipeline.set_state(gst.STATE_PAUSED)
|
|
self._pipeline.get_state()
|
|
self.debug('paused')
|
|
|
|
self.debug('query duration')
|
|
sink = self._pipeline.get_by_name('sink')
|
|
assert sink, 'Error constructing pipeline'
|
|
|
|
length, format = sink.query_duration(gst.FORMAT_DEFAULT)
|
|
# wavparse 0.10.14 returns in bytes
|
|
if format == gst.FORMAT_BYTES:
|
|
self.debug('query returned in BYTES format')
|
|
length /= 4
|
|
self.debug('total length', length)
|
|
self.length = length
|
|
self._pipeline.set_state(gst.STATE_NULL)
|
|
|
|
self.stop()
|
|
|
|
class ImageVerifyTask(MultiTask):
|
|
"""
|
|
I verify a disk image and get the necessary track lengths.
|
|
"""
|
|
|
|
description = "Checking tracks"
|
|
lengths = None
|
|
|
|
def __init__(self, image):
|
|
self._image = image
|
|
cue = image.cue
|
|
self._tasks = []
|
|
self.lengths = {}
|
|
|
|
for trackIndex, track in enumerate(cue.tracks):
|
|
index = track._indexes[1]
|
|
offset = index[0]
|
|
length = cue.getTrackLength(track)
|
|
file = index[1]
|
|
|
|
if length == -1:
|
|
path = image.getRealPath(file.path)
|
|
taskk = AudioLengthTask(path)
|
|
self.addTask(taskk)
|
|
self._tasks.append((trackIndex + 1, track, taskk))
|
|
|
|
def stop(self):
|
|
for trackIndex, track, taskk in self._tasks:
|
|
# print '%d has length %d' % (trackIndex, taskk.length)
|
|
index = track._indexes[1]
|
|
offset = index[0]
|
|
assert taskk.length % crc.FRAMES_PER_DISC_FRAME == 0
|
|
end = taskk.length / crc.FRAMES_PER_DISC_FRAME
|
|
self.lengths[trackIndex] = end - offset
|
|
|
|
MultiTask.stop(self)
|