git.slaskete.net - python-gstreamer-examples/blob - example1.py

   1 #!/usr/bin/env python
   2 # This is a reworked version of the example from Jono Bacon's Python+Gstreamer
   3 # primer: http://www.jonobacon.org/2006/08/28/getting-started-with-gstreamer-with-python/
   4 #
   5 # It uses Gstreamer 1.0, and replaces alsa with pulse for audio output, and
   6 # drops the use of the GTK main loop, since we're not bothered with a GUI
   7 # Info on porting python scripts to Gstreamer 1.0 can be found here:
   8 # https://wiki.ubuntu.com/Novacut/GStreamer1.0
   9
  10 import gi
  11 gi.require_version('Gst', '1.0')
  12 from gi.repository import Gst, GLib
  13
  14 class Main:
  15   def __init__(self):
  16     # Initiate the pipeline
  17     Gst.init(None)
  18     self.pipeline = Gst.Pipeline()
  19
  20     # Add an audiotestsrc element to the pipeline
  21     self.audiotestsrc = Gst.ElementFactory.make("audiotestsrc", "audio")
  22     self.pipeline.add(self.audiotestsrc)
  23
  24     # Add a pulsesink element to the pipeline
  25     self.pulsesink = Gst.ElementFactory.make("pulsesink", "sink")
  26     self.pipeline.add(self.pulsesink)
  27
  28     # Link the two elements together
  29     self.audiotestsrc.link(self.pulsesink)
  30
  31     # Set the pipeline to the playing state
  32     self.pipeline.set_state(Gst.State.PLAYING)
  33
  34 # Create the pipelie and enter main loop, quit with ctrl+c
  35 start = Main()
  36 mainloop = GLib.MainLoop()
  37
  38 try:
  39     mainloop.run()
  40 except KeyboardInterrupt:
  41     exit(0)