def to_disc_metadata(self):
from audiotools import MetaData
return MetaData(album_name=self.get(u"TITLE", None),
performer_name=self.get(u"PERFORMER", None),
artist_name=self.get(u"SONGWRITER", None),
composer_name=self.get(u"COMPOSER", None),
comment=self.get(u"MESSAGE", None))
def delete_metadata(self):
"""deletes the track's MetaData
this removes or unsets tags as necessary in order to remove all data
raises IOError if unable to write the file"""
from audiotools import MetaData
self.set_metadata(MetaData())
def to_track_metadata(self):
from audiotools import MetaData
return MetaData(
track_name=decode_string(self.get("TITLE", None)),
performer_name=decode_string(self.get("PERFORMER", None)),
artist_name=decode_string(self.get("SONGWRITER", None)),
composer_name=decode_string(self.get("COMPOSER", None)),
comment=decode_string(self.get("MESSAGE", None)),
ISRC=decode_string(self.get("ISRC", None)))
def metadata(self):
def get_track_metadata(track_node, album_metadata, track_number):
try:
#FIXME - not sure if name or sort-name should take precendence
artist_name = get_xml_text_node(
get_xml_nodes(track_node, u'artist')[0], u'name')
except IndexError:
artist_name = album_metadata.artist_name
track_metadata = MetaData(track_name=get_xml_text_node(
track_node, u'title'),
artist_name=artist_name,
track_number=track_number)
track_metadata.merge(album_metadata)
return track_metadata
try:
release = self.dom.getElementsByTagName(u'release')[0]
except IndexError:
return AlbumMetaData([])
album_name = get_xml_text_node(release, u'title')
try:
#FIXME - not sure if name or sort-name should take precendence
artist_name = get_xml_text_node(
get_xml_nodes(release, u'artist')[0], u'name')
except IndexError:
artist_name = u''
try:
tracks = get_xml_nodes(
get_xml_nodes(release, u'track-list')[0], u'track')
except IndexError:
tracks = []
album_metadata = MetaData(album_name=album_name,
artist_name=artist_name,
track_total=len(tracks))
try:
release_events = get_xml_nodes(release, u'release-event-list')[0]
event = get_xml_nodes(release_events, u'event')[-1]
album_metadata.year = event.getAttribute('date')[0:4]
album_metadata.catalog = event.getAttribute('catalog-number')
except IndexError:
pass
return AlbumMetaData([
get_track_metadata(track_node=node,
album_metadata=album_metadata,
track_number=i + 1)
for (i, node) in enumerate(tracks)
])
def delete_metadata(self):
"""deletes the track's MetaData
raises IOError if unable to write the file"""
if ((self.get_replay_gain() is not None) or
(self.get_cuesheet() is not None)):
# non-textual metadata is present and needs preserving
self.set_metadata(MetaData())
else:
# no non-textual metadata, so wipe out the entire block
from os import access, R_OK, W_OK
from audiotools.bitstream import BitstreamReader
from audiotools import transfer_data
if not access(self.filename, R_OK | W_OK):
raise IOError(self.filename)
with open(self.filename, "rb") as f:
f.seek(-32, 2)
(preamble,
version,
tag_size,
item_count,
read_only,
item_encoding,
is_header,
no_footer,
has_header) = BitstreamReader(f, True).parse(
ApeTag.HEADER_FORMAT)
if (preamble == b'APETAGEX') and (version == 2000):
from audiotools import TemporaryFile
from os.path import getsize
# there's existing metadata to delete
# so rewrite file without trailing metadata tag
if has_header:
old_tag_size = 32 + tag_size
else:
old_tag_size = tag_size
# copy everything but the last "old_tag_size" bytes
# from existing file to rewritten file
new_apev2 = TemporaryFile(self.filename)
old_apev2 = open(self.filename, "rb")
limited_transfer_data(
old_apev2.read,
new_apev2.write,
getsize(self.filename) - old_tag_size)
old_apev2.close()
new_apev2.close()
def delete_metadata(self):
"""deletes the track's MetaData
this removes or unsets tags as necessary in order to remove all data
raises IOError if unable to write the file"""
from audiotools import MetaData
# the vorbis comment packet is required,
# so simply zero out its contents
self.set_metadata(MetaData())
def from_cuesheet(cls, cuesheet, total_frames, sample_rate, metadata=None):
if (metadata is None):
metadata = MetaData()
return cls.from_files([
DummyAudioFile(length=(pcm_frames * 75) / sample_rate,
metadata=metadata,
track_number=i + 1)
for (i,
pcm_frames) in enumerate(cuesheet.pcm_lengths(total_frames))
])
def inject_metadata(self, format, version):
"""
audiotools.MetaData
"""
meta = MetaData()
"""
prepare metadata object
"""
# track-level metadata
meta.track_name = self.name
meta.track_number = self.tracknumber
meta.media = 'DIGITAL'
meta.isrc = self.isrc
""" Needs fixing...
for extra_artist in self.extra_artists.all():
print extra_artist
meta.performer_name =
meta.composer_name =
meta.conductor_name =
"""
# release-level metadata
if self.release:
meta.album_name = self.release.name
meta.catalog = self.release.catalognumber
meta.track_total = len(self.release.media_release.all())
if self.release.releasedate:
try:
meta.year = str(self.release.releasedate.year)
meta.date = str(self.release.releasedate)
except Exception, e:
print e
try:
cover_image = self.release.cover_image if self.release.cover_image else self.release.main_image
if meta.supports_images() and cover_image:
for i in meta.images():
meta.delete_image(i)
opt = dict(size=(200, 200),
crop=True,
bw=False,
quality=80)
image = get_thumbnailer(cover_image).get_thumbnail(opt)
meta.add_image(get_raw_image(image.path, 0))
except Exception, e:
print e
def incect_metadata(self, path, media):
log = logging.getLogger('util.process.Process.incect_metadata')
log.debug('incect metadata to: %s' % (path))
log.debug('source: %s' % (media))
"""
audiotools.MetaData
"""
meta = MetaData()
"""
prepare metadata object
"""
# track-level metadata
meta.track_name = media.name
meta.track_number = media.tracknumber
meta.media = 'DIGITAL'
meta.isrc = media.isrc
meta.genre = 2
# release-level metadata
if media.release:
meta.album_name = media.release.name
meta.catalog = media.release.catalognumber
meta.track_total = len(media.release.media_release.all())
if media.release.releasedate:
try:
meta.year = str(media.release.releasedate.year)
meta.date = str(media.release.releasedate)
except Exception, e:
print e
try:
cover_image = media.release.cover_image if media.release.cover_image else media.release.main_image
if meta.supports_images() and cover_image:
for i in meta.images():
meta.delete_image(i)
opt = dict(size=(200, 200),
crop=True,
bw=False,
quality=80)
image = get_thumbnailer(cover_image).get_thumbnail(opt)
meta.add_image(get_raw_image(image.path, 0))
except Exception, e:
print e
def get_track_metadata(track_node, album_metadata, track_number):
try:
#FIXME - not sure if name or sort-name should take precendence
artist_name = get_xml_text_node(
get_xml_nodes(track_node, u'artist')[0], u'name')
except IndexError:
artist_name = album_metadata.artist_name
track_metadata = MetaData(track_name=get_xml_text_node(
track_node, u'title'),
artist_name=artist_name,
track_number=track_number)
track_metadata.merge(album_metadata)
return track_metadata
def get_metadata(self):
"""returns SheetTrack's MetaData, or None"""
from audiotools import MetaData
isrc = self.first_flag(TOCFlag_ISRC)
cd_text = self.first_flag(CDText)
if (isrc is not None) and (cd_text is not None):
metadata = cd_text.to_track_metadata()
metadata.ISRC = decode_string(isrc.isrc())
return metadata
elif cd_text is not None:
return cd_text.to_track_metadata()
elif isrc is not None:
return MetaData(ISRC=decode_string(isrc.isrc()))
else:
return None
def get_metadata(self):
"""returns MetaData of Sheet, or None
this metadata often contains information such as catalog number
or CD-TEXT values"""
from audiotools import MetaData
if (self.__catalog__ is not None) and (self.__cd_text__ is not None):
metadata = self.__cd_text__.to_disc_metadata()
metadata.catalog = self.__catalog__
return metadata
elif self.__catalog__ is not None:
return MetaData(catalog=self.__catalog__)
elif self.__cd_text__ is not None:
return self.__cd_text__.to_disc_metadata()
else:
return None
def set_cuesheet(self, cuesheet):
import os.path
import cue
if (cuesheet is None):
return
metadata = self.get_metadata()
if (metadata is None):
metadata = WavePackAPEv2.converted(MetaData())
metadata['Cuesheet'] = WavePackAPEv2.ITEM.string(
'Cuesheet',
cue.Cuesheet.file(cuesheet,
os.path.basename(self.filename)).decode(
'ascii', 'replace'))
self.set_metadata(metadata)
def xmcd_metadata(freedb_file):
"""given a dict of KEY->value unicode strings,
yields a MetaData object per track"""
import re
TTITLE = re.compile(r'TTITLE(\d+)')
dtitle = freedb_file.get("DTITLE", "")
if (" / " in dtitle):
(album_artist, album_name) = dtitle.split(" / ", 1)
else:
album_artist = None
album_name = dtitle
year = freedb_file.get("DYEAR", None)
ttitles = [(int(m.group(1)), value) for (m, value) in
[(TTITLE.match(key), value) for (key, value) in
freedb_file.items()] if m is not None]
if (len(ttitles) > 0):
track_total = max([tracknum for (tracknum, ttitle) in ttitles]) + 1
else:
track_total = 0
for (tracknum, ttitle) in sorted(ttitles, key=lambda t: t[0]):
if (" / " in ttitle):
(track_artist,
track_name) = ttitle.split(" / ", 1)
else:
track_artist = album_artist
track_name = ttitle
from audiotools import MetaData
yield MetaData(
track_name=track_name.decode('utf-8', 'replace'),
track_number=tracknum + 1,
track_total=track_total,
album_name=album_name.decode('utf-8', 'replace'),
artist_name=(track_artist.decode('utf-8', 'replace')
if track_artist is not None else None),
year=(year.decode('utf-8', 'replace') if
year is not None else None))
def get_metadata(self):
"""returns SheetTrack's MetaData, or None"""
from operator import or_
from functools import reduce
if (reduce(or_, [(attr is not None) for attr in [
self.__isrc__, self.__title__, self.__performer__,
self.__songwriter__
]], False)):
from audiotools import MetaData
return MetaData(ISRC=self.__isrc__,
track_name=self.__title__,
performer_name=self.__performer__,
artist_name=self.__songwriter__)
else:
return None
def get_metadata(self):
"""returns MetaData of Sheet, or None
this metadata often contains information such as catalog number
or CD-TEXT values"""
from operator import or_
from functools import reduce
if (reduce(or_, [(attr is not None) for attr in [
self.__catalog__, self.__title__, self.__performer__,
self.__songwriter__
]], False)):
from audiotools import MetaData
return MetaData(catalog=self.__catalog__,
album_name=self.__title__,
performer_name=self.__performer__,
artist_name=self.__songwriter__)
else:
return None
def set_cuesheet(self, cuesheet):
"""Imports cuesheet data from a Cuesheet-compatible object.
This are objects with catalog(), ISRCs(), indexes(), and pcm_lengths()
methods. Raises IOError if an error occurs setting the cuesheet."""
import os.path
import cue
if (cuesheet is None):
return
metadata = self.get_metadata()
if (metadata is None):
metadata = WavPackAPEv2.converted(MetaData())
metadata['Cuesheet'] = WavPackAPEv2.ITEM.string(
'Cuesheet',
cue.Cuesheet.file(cuesheet,
os.path.basename(self.filename)).decode(
'ascii', 'replace'))
self.set_metadata(metadata)
def metadata(self):
dtitle = self.get('DTITLE', u'')
if (u' / ' in dtitle):
(album_artist, album_name) = dtitle.split(u' / ', 1)
else:
(album_artist, album_name) = (dtitle, dtitle)
dyear = self.get('DYEAR', u'')
tracks = []
for key in self.keys():
if (key.startswith('TTITLE')):
tracknum = self.key_digits(key)
if (tracknum == -1):
continue
ttitle = self[key]
if (u' / ' in ttitle):
(track_artist, track_name) = ttitle.split(u' / ', 1)
else:
track_name = ttitle
track_artist = album_artist
tracks.append(
MetaData(track_name=track_name,
track_number=tracknum + 1,
album_name=album_name,
artist_name=track_artist,
year=dyear))
track_total = max([t.track_number for t in tracks])
for t in tracks:
t.track_total = track_total
tracks.sort(lambda t1, t2: cmp(t1.track_number, t2.track_number))
return AlbumMetaData(tracks)
def parse_release(release, disc_id):
"""given a <release> Element node and DiscID object
yields a populated MetaData object per track
may raise KeyError if the given DiscID is not found in the <release>"""
# <release> may contain <title>
try:
album_name = text(get_node(release, u"title"))
except KeyError:
album_name = None
# <release> may contain <artist-credit>
try:
album_artist = artist(get_node(release, u"artist-credit"))
except KeyError:
album_artist = None
# <release> may contain <label-info-list>
try:
# <label-info-list> contains 0 or more <label-info>s
for label_info in get_nodes(get_node(release, u"label-info-list"),
u"label-info"):
# <label-info> may contain <catalog-number>
try:
catalog = text(get_node(label_info, u"catalog-number"))
except KeyError:
catalog = None
# <label-info> may contain <label>
# and <label> may contain <name>
try:
publisher = text(get_node(label_info, u"label", u"name"))
except KeyError:
publisher = None
# we'll use the first result found
break
else:
# <label-info-list> with no <label-info> tags
catalog = None
publisher = None
except KeyError:
catalog = None
publisher = None
# <release> may contain <date>
try:
year = text(get_node(release, u"date"))[0:4]
except:
year = None
# find exact disc in <medium-list> tag
# depending on disc_id value
try:
medium_list = get_node(release, u"medium-list")
except KeyError:
# no media found for disc ID
raise KeyError(disc_id)
for medium in get_nodes(medium_list, u"medium"):
try:
if (disc_id.__unicode__() in
[disc.getAttribute(u"id")
for disc in get_nodes(get_node(medium, u"disc-list"),
u"disc")]):
# found requested disc_id in <medium>'s list of <disc>s
# so use that medium node to find additional info
break
except KeyError:
# no <disc-list> tag found in <medium>
continue
else:
# our disc_id wasn't found in any of the <release>'s <medium>s
raise KeyError(disc_id)
# if multiple discs in <medium-list>,
# populate album number and album total
if ((medium_list.hasAttribute(u"count") and
(int(medium_list.getAttribute(u"count")) > 1))):
album_total = int(medium_list.getAttribute(u"count"))
try:
album_number = int(text(get_node(medium, u"position")))
except KeyError:
album_number = None
else:
album_total = album_number = None
# <medium> must contain <track-list>
tracks = get_nodes(get_node(medium, u"track-list"), u"track")
track_total = len(tracks)
# and <track-list> contains 0 or more <track>s
for (i, track) in enumerate(tracks, 1):
# if <track> contains title use that for track_name
try:
track_name = text(get_node(track, u"title"))
except KeyError:
track_name = None
# if <track> contains <artist-credit> use that for track_artist
try:
track_artist = artist(get_node(release, u"artist-credit"))
except KeyError:
track_artist = None
# if <track> contains a <recording>
# use that for track_name and track artist
try:
recording = get_node(track, u"recording")
# <recording> may contain a <title>
if track_name is None:
try:
track_name = text(get_node(recording, u"title"))
except KeyError:
track_name = None
# <recording> may contain <artist-credit>
if track_artist is None:
try:
track_artist = artist(get_node(recording,
u"artist-credit"))
except KeyError:
track_artist = album_artist
except KeyError:
# no <recording> in <track>
if track_artist is None:
track_artist = album_artist
# <track> may contain a <position>
try:
track_number = int(text(get_node(track, u"position")))
except KeyError:
track_number = i
# yield complete MetaData object
from audiotools import MetaData
yield MetaData(track_name=track_name,
track_number=track_number,
track_total=track_total,
album_name=album_name,
artist_name=track_artist,
performer_name=None,
composer_name=None,
conductor_name=None,
ISRC=None,
catalog=catalog,
copyright=None,
publisher=publisher,
year=year,
album_number=album_number,
album_total=album_total,
comment=None)
