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4ecf760ec1
Original commit message from CVS: * examples/pyidentity.py: Add a simple example that implements an identity-like element in python and passes buffers through. It lacks buffer-alloc & query handling at the moment, because the required gstreamer funcs aren't wrapped. * examples/sinkelement.py: Make sure to call gobject.threads_init() in the example.
68 lines
1.6 KiB
Python
68 lines
1.6 KiB
Python
#!/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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# 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
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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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_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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#
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# Code to test the MySink class
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#
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src = gst.element_factory_make('fakesrc')
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gst.info('About to create MySink')
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sink = MySink()
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pipeline = gst.Pipeline()
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pipeline.add(src, sink)
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src.link(sink)
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pipeline.set_state(gst.STATE_PLAYING)
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gobject.MainLoop().run()
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