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from gi.repository import Gst
from gi.repository import GLib
import sys
mainloop = GLib.MainLoop()
def _messageCb(bus, message):
if str(type(message.src)) == "<class '__main__.__main__.GstLevel'>":
s = message.get_structure()
p = None
if s:
p = s.get_value("rms")
if p:
st = s.get_value("stream-time")
print "rms = " + str(p) + "; stream-time = " + str(st)
if message.type == Gst.MessageType.EOS:
mainloop.quit()
elif message.type == Gst.MessageType.ERROR:
bus.disconnect_by_func(_messageCb)
mainloop.quit()
if __name__=="__main__":
#global mainloop
Gst.init([])
pipeline = Gst.parse_launch("uridecodebin name=decode uri=" + sys.argv[1] + " ! audioconvert ! level name=wavelevel interval=10000000 post-messages=true ! fakesink qos=false name=faked")
faked = pipeline.get_by_name("faked")
bus = pipeline.get_bus()
bus.add_signal_watch()
bus.connect("message", _messageCb)
pipeline.set_state(Gst.State.PLAYING)
mainloop.run()
pipeline.set_state(Gst.State.NULL)
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