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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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69 lines
2.2 KiB
Python
69 lines
2.2 KiB
Python
#!/usr/bin/env python
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import pygtk
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pygtk.require ("2.0")
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import gobject
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gobject.threads_init()
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import pygst
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pygst.require('0.10')
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import gst
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class PyIdentity(gst.Element):
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_sinkpadtemplate = gst.PadTemplate ("sink",
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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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_srcpadtemplate = gst.PadTemplate ("src",
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gst.PAD_SRC,
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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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self.sinkpad = gst.Pad(self._sinkpadtemplate, "sink")
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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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self.sinkpad.set_getcaps_function(gst.Pad.proxy_getcaps)
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self.sinkpad.set_setcaps_function(gst.Pad.proxy_setcaps)
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self.add_pad (self.sinkpad)
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self.srcpad = gst.Pad(self._srcpadtemplate, "src")
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self.srcpad.set_event_function(self.srceventfunc)
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self.srcpad.set_query_function(self.srcqueryfunc)
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self.srcpad.set_getcaps_function(gst.Pad.proxy_getcaps)
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self.srcpad.set_setcaps_function(gst.Pad.proxy_setcaps)
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self.add_pad (self.srcpad)
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def chainfunc(self, pad, buffer):
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gst.log ("Passing buffer with ts %d" % (buffer.timestamp))
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return self.srcpad.push (buffer)
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def eventfunc(self, pad, event):
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return self.srcpad.push_event (event)
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def srcqueryfunc (self, pad, query):
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return self.sinkpad.query (query)
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def srceventfunc (self, pad, event):
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return self.sinkpad.push_event (event)
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gobject.type_register(PyIdentity)
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pipe = gst.Pipeline()
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vt = gst.element_factory_make ("videotestsrc")
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i1 = PyIdentity()
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color = gst.element_factory_make ("ffmpegcolorspace")
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scale = gst.element_factory_make ("videoscale")
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q1 = gst.element_factory_make ("queue")
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i2 = PyIdentity()
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sink = gst.element_factory_make ("autovideosink")
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pipe.add (vt, i1, q1, i2, color, scale, sink)
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gst.element_link_many (vt, i1, q1, i2, color, scale, sink)
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pipe.set_state (gst.STATE_PLAYING)
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gobject.MainLoop().run()
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