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
  11 import gi
  12 gi.require_version('Gst', '1.0')
  13 from gi.repository import Gst
  14 import gobject
  15
  16 class Main:
  17   def __init__(self):
  18     # Initiate the pipeline
  19     Gst.init(None)
  20     self.pipeline = Gst.Pipeline("mypipeline")
  21
  22     # Add an audiotestsrc element to the pipeline
  23     self.audiotestsrc = Gst.ElementFactory.make("audiotestsrc", "audio")
  24     self.pipeline.add(self.audiotestsrc)
  25
  26     # Add a pulsesink element to the pipeline
  27     self.pulsesink = Gst.ElementFactory.make("pulsesink", "sink")
  28     self.pipeline.add(self.pulsesink)
  29
  30     # Link the two elements together
  31     self.audiotestsrc.link(self.pulsesink)
  32
  33     # Set the pipeline to the playing state
  34     self.pipeline.set_state(Gst.State.PLAYING)
  35
  36 # Create the pipelie and enter main loop, quit with ctrl+c
  37 start = Main()
  38 mainloop = gobject.MainLoop()
  39 mainloop.run()