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#!/usr/bin/env python
import os
import sys
import gst
import gobject
class tag_getter:
def __init__(self):
#make a dictionary to hold our tag info
self.file_tags = {}
#make a playbin to parse the audio file
self.pbin = gst.element_factory_make("playbin")
#we need to receive signals from the playbin's bus
self.bus = self.pbin.get_bus()
#make sure we are watching the signals on the bus
self.bus.add_signal_watch()
#what do we do when a tag is part of the bus signal?
self.bus.connect("message::tag", self.bus_message_tag)
#create a loop to control our app
self.mainloop = gobject.MainLoop()
def bus_message_tag (self, bus, message):
#we received a tag message
taglist = message.parse_tag()
#put the keys in the dictionary
for key in taglist.keys():
self.file_tags[key] = taglist[key]
print key, '=', taglist[key]
#for this test, if we have the artist tag, we can quit
if self.file_tags['artist']:
print self.file_tags
sys.exit()
def set_file(self,file):
#set the uri of the playbin to our audio file
self.pbin.set_property("uri","file://"+file)
#pause the playbin, we don't really need to play
self.pbin.set_state(gst.STATE_PAUSED)
def run(self):
#start the main loop
self.mainloop.run()
if __name__=="__main__":
if len(sys.argv)>1:
file = sys.argv[1]
pwd = os.getcwd()
filepath = os.path.join(pwd,file)
getter = tag_getter()
getter.set_file(file)
getter.run()
else:
print "select an audio file"
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