3 # vi:si:et:sw=4:sts=4:ts=4
6 # (c) 2005 Edward Hervey <edward at fluendo dot com>
7 # Test case for the GstController on sinesrc -> alsasink
8 # Inspired from ensonic's examples/controller/audio-controller.c
16 pipeline = gst.Pipeline("audiocontroller")
17 src = gst.element_factory_make("audiotestsrc", "src")
18 sink = gst.element_factory_make("alsasink", "sink")
19 pipeline.add(src, sink)
22 control = gst.Controller(src, "freq", "volume")
23 control.set_interpolation_mode("volume", gst.INTERPOLATE_LINEAR)
24 control.set_interpolation_mode("freq", gst.INTERPOLATE_LINEAR)
26 control.set("volume", 0, 0.0)
27 control.set("volume", 2 * gst.SECOND, 1.0)
28 control.set("volume", 4 * gst.SECOND, 0.0)
29 control.set("volume", 6 * gst.SECOND, 1.0)
31 control.set("freq", 0, 440.0)
32 control.set("freq", 3 * gst.SECOND, 3000.0)
33 control.set("freq", 6 * gst.SECOND, 880.0)
35 pipeline.set_state(gst.STATE_PLAYING)
39 if __name__ == "__main__":