def _save(self):
try:
audio = _Mp4(self.uri)
except IOError:
return False
try:
for tag in self._deleted_tags:
try:
del audio[tag]
except KeyError:
try:
del audio["----:%s" % tag]
except KeyError:
pass
self._deleted_tags.clear()
except AttributeError:
pass
for identifier in self.keys_tags():
try:
values = self.get(identifier)
if not values:
raise KeyError
except KeyError:
continue
# If a key is not from our specifically defined mapping dict it's a
# freeform key so treat it accordingly.
try:
tag = self.__literal_to_tag[identifier]
except KeyError:
tag = "----:%s" % identifier
values = [v.encode("utf-8") for v in values]
# Track and disc numbers are stored as a list of tuples so handle
# them separately.
if identifier in (TRACK, DISC):
values = values.split("/")
try:
v1 = int(values[0])
except (IndexError, ValueError):
continue
try:
v2 = int(values[1])
except (IndexError, ValueError):
v2 = 0
audio[tag] = [(v1, v2)]
else:
audio[tag] = values
audio.save()
return True
def _read_tags(self):
try:
audio = _Mp4(self.uri)
except Mp4Error:
raise TagParseError
for key, values in (audio.tags or {}).iteritems():
if key in ("disk", "trkn"):
value = ["%d/%d" % values[0]]
elif key.startswith("----:"):
key = key[5:]
value = values
elif self.__tag_to_literal.has_key(key):
value = map(unicode, values)
else:
continue
try:
self[self.__tag_to_literal[key]] = value
except KeyError:
self[key] = value
self._parse_info(audio.info)
self[FORMAT] = "MPEG-4 AAC"
self[ENCODING] = "lossy" if self[BITRATE] else "lossless"
