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70 lines
2 KiB
Python
70 lines
2 KiB
Python
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#!/usr/bin/env python
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# -*- Mode: Python -*-
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# vi:si:et:sw=4:sts=4:ts=4
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# sinkelement.py
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# (c) 2005 Edward Hervey <edward@fluendo.com>
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# (c) 2007 Jan Schmidt <jan@fluendo.com>
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# Licensed under LGPL
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#
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# Small test application to show how to write a sink element
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# in 20 lines in python and place into the gstreamer registry
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# so it can be autoplugged or used from parse_launch.
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#
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# Run this script with GST_DEBUG=python:5 to see the debug
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# messages
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import pygst
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pygst.require('0.10')
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import gst
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import gobject
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gobject.threads_init ()
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#
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# Simple Sink element created entirely in python
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#
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class MySink(gst.Element):
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__gstdetails__ = ('CustomSink','Sink', \
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'Custom test sink element', 'Edward Hervey')
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_sinkpadtemplate = gst.PadTemplate ("sinkpadtemplate",
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gst.PAD_SINK,
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gst.PAD_ALWAYS,
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gst.caps_new_any())
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def __init__(self):
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gst.Element.__init__(self)
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gst.info('creating sinkpad')
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self.sinkpad = gst.Pad(self._sinkpadtemplate, "sink")
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gst.info('adding sinkpad to self')
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self.add_pad(self.sinkpad)
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gst.info('setting chain/event functions')
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self.sinkpad.set_chain_function(self.chainfunc)
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self.sinkpad.set_event_function(self.eventfunc)
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def chainfunc(self, pad, buffer):
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self.info("%s timestamp(buffer):%d" % (pad, buffer.timestamp))
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return gst.FLOW_OK
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def eventfunc(self, pad, event):
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self.info("%s event:%r" % (pad, event.type))
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return True
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gobject.type_register(MySink)
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# Register the element into this process' registry.
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gst.element_register (MySink, 'mysink', gst.RANK_MARGINAL)
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print "Use --gst-debug=python:3 to see output from this example"
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#
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# Code to test the MySink class
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#
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gst.info('About to create MySink')
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pipeline = gst.parse_launch ("fakesrc ! mysink")
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pipeline.set_state(gst.STATE_PLAYING)
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gobject.MainLoop().run()
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