237 lines
8.9 KiB
Python
237 lines
8.9 KiB
Python
import os
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import hashlib
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import mutagen
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import logging
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import math
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import re
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import traceback
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from api_clients import api_client
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"""
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list of supported easy tags in mutagen version 1.20
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['albumartistsort', 'musicbrainz_albumstatus', 'lyricist', 'releasecountry', 'date', 'performer', 'musicbrainz_albumartistid', 'composer', 'encodedby', 'tracknumber', 'musicbrainz_albumid', 'album', 'asin', 'musicbrainz_artistid', 'mood', 'copyright', 'author', 'media', 'length', 'version', 'artistsort', 'titlesort', 'discsubtitle', 'website', 'musicip_fingerprint', 'conductor', 'compilation', 'barcode', 'performer:*', 'composersort', 'musicbrainz_discid', 'musicbrainz_albumtype', 'genre', 'isrc', 'discnumber', 'musicbrainz_trmid', 'replaygain_*_gain', 'musicip_puid', 'artist', 'title', 'bpm', 'musicbrainz_trackid', 'arranger', 'albumsort', 'replaygain_*_peak', 'organization']
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"""
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class AirtimeMetadata:
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def __init__(self):
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self.airtime2mutagen = {\
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"MDATA_KEY_TITLE": "title",\
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"MDATA_KEY_CREATOR": "artist",\
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"MDATA_KEY_SOURCE": "album",\
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"MDATA_KEY_GENRE": "genre",\
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"MDATA_KEY_MOOD": "mood",\
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"MDATA_KEY_TRACKNUMBER": "tracknumber",\
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"MDATA_KEY_BPM": "bpm",\
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"MDATA_KEY_LABEL": "organization",\
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"MDATA_KEY_COMPOSER": "composer",\
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"MDATA_KEY_ENCODER": "encodedby",\
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"MDATA_KEY_CONDUCTOR": "conductor",\
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"MDATA_KEY_RECORD_DATE": "record_date",\
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"MDATA_KEY_YEAR": "date",\
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"MDATA_KEY_URL": "website",\
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"MDATA_KEY_ISRC": "isrc",\
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"MDATA_KEY_COPYRIGHT": "copyright",\
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}
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self.mutagen2airtime = {\
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"title": "MDATA_KEY_TITLE",\
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"artist": "MDATA_KEY_CREATOR",\
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"album": "MDATA_KEY_SOURCE",\
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"genre": "MDATA_KEY_GENRE",\
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"mood": "MDATA_KEY_MOOD",\
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"tracknumber": "MDATA_KEY_TRACKNUMBER",\
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"bpm": "MDATA_KEY_BPM",\
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"organization": "MDATA_KEY_LABEL",\
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"composer": "MDATA_KEY_COMPOSER",\
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"encodedby": "MDATA_KEY_ENCODER",\
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"conductor": "MDATA_KEY_CONDUCTOR",\
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"record_date": "MDATA_KEY_RECORD_DATE",\
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"date": "MDATA_KEY_YEAR",\
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"website": "MDATA_KEY_URL",\
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"isrc": "MDATA_KEY_ISRC",\
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"copyright": "MDATA_KEY_COPYRIGHT",\
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}
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self.logger = logging.getLogger()
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def get_md5(self, filepath):
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f = open(filepath, 'rb')
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m = hashlib.md5()
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m.update(f.read())
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md5 = m.hexdigest()
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return md5
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## mutagen_length is in seconds with the format (d+).dd
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## return format hh:mm:ss.uuu
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def format_length(self, mutagen_length):
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t = float(mutagen_length)
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h = int(math.floor(t/3600))
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t = t % 3600
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m = int(math.floor(t/60))
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s = t % 60
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# will be ss.uuu
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s = str(s)
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seconds = s.split(".")
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s = seconds[0]
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# have a maximum of 6 subseconds.
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if len(seconds[1]) >= 6:
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ss = seconds[1][0:6]
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else:
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ss = seconds[1][0:]
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length = "%s:%s:%s.%s" % (h, m, s, ss)
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return length
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def save_md_to_file(self, m):
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try:
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airtime_file = mutagen.File(m['MDATA_KEY_FILEPATH'], easy=True)
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for key in m:
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if key in self.airtime2mutagen:
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value = m[key]
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if value is not None:
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value = unicode(value)
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if len(value) > 0:
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self.logger.debug("Saving key '%s' with value '%s' to file", key, value)
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airtime_file[self.airtime2mutagen[key]] = value
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airtime_file.save()
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except Exception, e:
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self.logger.error('Trying to save md')
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self.logger.error('Exception: %s', e)
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self.logger.error('Filepath %s', m['MDATA_KEY_FILEPATH'])
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def truncate_to_length(self, item, length):
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if isinstance(item, int):
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item = str(item)
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if isinstance(item, basestring):
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if len(item) > length:
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return item[0:length]
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else:
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return item
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def get_md_from_file(self, filepath):
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self.logger.info("getting info from filepath %s", filepath)
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try:
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md = {}
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md5 = self.get_md5(filepath)
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md['MDATA_KEY_MD5'] = md5
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file_info = mutagen.File(filepath, easy=True)
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except Exception, e:
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self.logger.error("failed getting metadata from %s", filepath)
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self.logger.error("Exception %s", e)
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return None
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#check if file has any metadata
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if file_info is None:
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return None
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#check if file has any metadata
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if file_info is not None:
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for key in file_info.keys() :
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if key in self.mutagen2airtime:
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val = file_info[key]
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try:
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if val is not None and len(val) > 0 and val[0] is not None and len(val[0]) > 0:
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md[self.mutagen2airtime[key]] = val[0]
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except Exception, e:
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self.logger.error('Exception: %s', e)
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self.logger.error("traceback: %s", traceback.format_exc())
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if 'MDATA_KEY_TITLE' not in md:
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#get rid of file extension from original name, name might have more than 1 '.' in it.
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original_name = os.path.basename(filepath)
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original_name = original_name.split(".")[0:-1]
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original_name = ''.join(original_name)
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md['MDATA_KEY_TITLE'] = original_name
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#incase track number is in format u'4/11'
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#need to also check that the tracknumber is even a tracknumber (cc-2582)
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if 'MDATA_KEY_TRACKNUMBER' in md:
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try:
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md['MDATA_KEY_TRACKNUMBER'] = int(md['MDATA_KEY_TRACKNUMBER'])
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except Exception, e:
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pass
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if isinstance(md['MDATA_KEY_TRACKNUMBER'], basestring):
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match = re.search('^(\d*/\d*)?', md['MDATA_KEY_TRACKNUMBER'])
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try:
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md['MDATA_KEY_TRACKNUMBER'] = int(md['MDATA_KEY_TRACKNUMBER'].split("/")[0], 10)
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except Exception, e:
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del md['MDATA_KEY_TRACKNUMBER']
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#make sure bpm is valid, need to check more types of formats for this tag to assure correct parsing.
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if 'MDATA_KEY_BPM' in md:
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if isinstance(md['MDATA_KEY_BPM'], basestring):
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try:
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md['MDATA_KEY_BPM'] = int(md['MDATA_KEY_BPM'])
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except Exception, e:
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del md['MDATA_KEY_BPM']
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#following metadata is truncated if needed to fit db requirements.
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if 'MDATA_KEY_GENRE' in md:
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md['MDATA_KEY_GENRE'] = self.truncate_to_length(md['MDATA_KEY_GENRE'], 64)
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if 'MDATA_KEY_TITLE' in md:
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md['MDATA_KEY_TITLE'] = self.truncate_to_length(md['MDATA_KEY_TITLE'], 512)
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if 'MDATA_KEY_CREATOR' in md:
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md['MDATA_KEY_CREATOR'] = self.truncate_to_length(md['MDATA_KEY_CREATOR'], 512)
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if 'MDATA_KEY_SOURCE' in md:
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md['MDATA_KEY_SOURCE'] = self.truncate_to_length(md['MDATA_KEY_SOURCE'], 512)
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if 'MDATA_KEY_MOOD' in md:
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md['MDATA_KEY_MOOD'] = self.truncate_to_length(md['MDATA_KEY_MOOD'], 64)
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if 'MDATA_KEY_LABEL' in md:
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md['MDATA_KEY_LABEL'] = self.truncate_to_length(md['MDATA_KEY_LABEL'], 512)
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if 'MDATA_KEY_COMPOSER' in md:
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md['MDATA_KEY_COMPOSER'] = self.truncate_to_length(md['MDATA_KEY_COMPOSER'], 512)
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if 'MDATA_KEY_ENCODER' in md:
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md['MDATA_KEY_ENCODER'] = self.truncate_to_length(md['MDATA_KEY_ENCODER'], 255)
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if 'MDATA_KEY_CONDUCTOR' in md:
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md['MDATA_KEY_CONDUCTOR'] = self.truncate_to_length(md['MDATA_KEY_CONDUCTOR'], 512)
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if 'MDATA_KEY_YEAR' in md:
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md['MDATA_KEY_YEAR'] = self.truncate_to_length(md['MDATA_KEY_YEAR'], 4)
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if 'MDATA_KEY_RECORD_DATE' in md:
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md['MDATA_KEY_RECORD_DATE'] = self.truncate_to_length(md['MDATA_KEY_RECORD_DATE'], 16)
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if 'MDATA_KEY_URL' in md:
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md['MDATA_KEY_URL'] = self.truncate_to_length(md['MDATA_KEY_URL'], 512)
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if 'MDATA_KEY_ISRC' in md:
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md['MDATA_KEY_ISRC'] = self.truncate_to_length(md['MDATA_KEY_ISRC'], 512)
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if 'MDATA_KEY_COPYRIGHT' in md:
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md['MDATA_KEY_COPYRIGHT'] = self.truncate_to_length(md['MDATA_KEY_COPYRIGHT'], 512)
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#end of db truncation checks.
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md['MDATA_KEY_BITRATE'] = file_info.info.bitrate
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md['MDATA_KEY_SAMPLERATE'] = file_info.info.sample_rate
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md['MDATA_KEY_DURATION'] = self.format_length(file_info.info.length)
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md['MDATA_KEY_MIME'] = file_info.mime[0]
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if "mp3" in md['MDATA_KEY_MIME']:
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md['MDATA_KEY_FTYPE'] = "audioclip"
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elif "vorbis" in md['MDATA_KEY_MIME']:
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md['MDATA_KEY_FTYPE'] = "audioclip"
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return md
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