def getTags(fileName, verbose):
expectedTags = ["artist", "album", "title", "track-number", "audio-codec"]
if not os.path.exists(fileName):
raise Exception('File does not exist: "', fileName, '"')
player = Gst.parse_launch("filesrc name=src ! decodebin ! fakesink")
bus = player.get_bus()
src = player.get_by_name("src")
src.set_property("location", fileName)
tags = dict()
player.set_state(Gst.State.PLAYING)
while True:
message = bus.pop()
if not message:
continue
t = message.type
if t == Gst.MessageType.TAG:
taglist = message.parse_tag()
for key in expectedTags:
typeName = Gst.tag_get_type(key).name
if typeName == "gchararray":
isValid, value = taglist.get_string(key)
if isValid:
value = value.decode("utf-8", errors="ignore")
elif typeName == "guint":
isValid, value = taglist.get_uint(key)
if verbose:
print key, value
if isValid:
tags[key] = unicode(value)
# got all required tags
if not verbose and len(tags) == len(expectedTags):
break
elif t == Gst.MessageType.EOS:
break
elif t == Gst.MessageType.ERROR:
err, debug = message.parse_error()
tags.clear()
tags["Error"] = err
print "in MessageType Error: ", err
break
player.set_state(Gst.State.NULL)
if len(tags) != len(expectedTags):
raise Exception("Could not find all tags")
return tags
def _append_tag(self, taglist, tag, tags):
if tag in ACCEPTABLE_TAGS:
name = Gst.tag_get_nick(tag)
type = Gst.tag_get_type(tag)
type_getters = {GObject.TYPE_STRING: 'get_string',
GObject.TYPE_DOUBLE: 'get_double',
GObject.TYPE_FLOAT: 'get_float',
GObject.TYPE_INT: 'get_int',
GObject.TYPE_UINT: 'get_uint'}
if type in type_getters:
res, value = getattr(taglist, type_getters[type])(tag)
assert res
if not type == GObject.TYPE_STRING:
value = str(value)
tags[name] = value
def _appendTag(self, taglist, tag, unused_udata):
if tag in acceptable_tags:
name = Gst.tag_get_nick(tag)
type = Gst.tag_get_type(tag)
type_getters = {GObject.TYPE_STRING: 'get_string',
GObject.TYPE_DOUBLE: 'get_double',
GObject.TYPE_FLOAT: 'get_float',
GObject.TYPE_INT: 'get_int',
GObject.TYPE_UINT: 'get_uint'}
if type in type_getters:
if type == GObject.TYPE_STRING:
value = getattr(taglist, type_getters[type])(tag)[1]
value = value.replace('<', ' ').replace('>', ' ')
else:
value = str(getattr(taglist, type_getters[type])(tag)[1])
self.tags[name] = value
def _appendTag(self, taglist, tag, unused_udata):
if tag in acceptable_tags:
name = Gst.tag_get_nick(tag)
type = Gst.tag_get_type(tag)
type_getters = {GObject.TYPE_STRING: 'get_string',
GObject.TYPE_DOUBLE: 'get_double',
GObject.TYPE_FLOAT: 'get_float',
GObject.TYPE_INT: 'get_int',
GObject.TYPE_UINT: 'get_uint'}
if type in type_getters:
if type == GObject.TYPE_STRING:
value = getattr(taglist, type_getters[type])(tag)[1]
value = value.replace('<', ' ').replace('>', ' ')
else:
value = str(getattr(taglist, type_getters[type])(tag)[1])
self.tags[name] = value
def _append_tag(self, taglist, tag, tags):
if tag in ACCEPTABLE_TAGS:
tag_name = Gst.tag_get_nick(tag)
tag_type = Gst.tag_get_type(tag)
type_getters = {
GObject.TYPE_STRING: 'get_string',
GObject.TYPE_DOUBLE: 'get_double',
GObject.TYPE_FLOAT: 'get_float',
GObject.TYPE_INT: 'get_int',
GObject.TYPE_UINT: 'get_uint'
}
if tag_type in type_getters:
res, value = getattr(taglist, type_getters[tag_type])(tag)
assert res
if not tag_type == GObject.TYPE_STRING:
value = str(value)
tags[tag_name] = value
