home *** CD-ROM | disk | FTP | other *** search
- #!/usr/bin/env python
- # -*- Mode: Python -*-
- # vi:si:et:sw=4:sts=4:ts=4
-
- # gst-python
- # Copyright (C) 2003 David I. Lehn
- #
- # This library is free software; you can redistribute it and/or
- # modify it under the terms of the GNU Library General Public
- # License as published by the Free Software Foundation; either
- # version 2 of the License, or (at your option) any later version.
- #
- # This library is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- # Library General Public License for more details.
- #
- # You should have received a copy of the GNU Library General Public
- # License along with this library; if not, write to the
- # Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- # Boston, MA 02111-1307, USA.
- #
- # Author: David I. Lehn <dlehn@users.sourceforge.net>
- #
-
- import pygtk
- pygtk.require('2.0')
-
- import sys
- import time
- import gobject
- import gtk
-
- import pygst
- pygst.require('0.10')
-
- import gst
-
- class BPS(object):
- def __init__(self):
- self.buffers = 0
- self.start = 0
-
- def done(self):
- end = time.time()
- dt = end - self.start
- bps = self.buffers/dt
- spb = dt/self.buffers
- print '\t%d buffers / %fs\t= %f bps\t= %f spb' % (self.buffers, dt, bps, spb)
-
- def fakesrc(self, buffers):
- src = gst.element_factory_make('fakesrc','src')
- src.set_property('silent', 1)
- src.set_property('num_buffers', buffers)
- return src
-
- def fakesink(self):
- sink = gst.element_factory_make('fakesink','sink')
- sink.set_property('silent', 1)
- return sink
-
- def build_pipeline(self, buffers):
- pipeline = gst.Pipeline('pipeline')
-
- src = self.fakesrc(buffers)
- pipeline.add(src)
- sink = self.fakesink()
- pipeline.add(sink)
- src.link(sink)
-
- return pipeline
-
- def idle(self, pipeline):
- return pipeline.iterate()
-
- def test(self):
- self.bus = self.pipeline.get_bus()
-
- self.start = time.time()
-
- self.pipeline.set_state(gst.STATE_PLAYING)
-
- while 1:
- msg = self.bus.poll(gst.MESSAGE_EOS | gst.MESSAGE_ERROR, gst.SECOND)
- if msg:
- break
-
- self.pipeline.set_state(gst.STATE_NULL)
- self.done()
-
- def run(self, buffers):
- self.buffers = buffers
-
- print '# Testing buffer processing rate for "fakesrc ! fakesink"'
- print '# bps = buffers per second'
- print '# spb = seconds per buffer'
-
- self.pipeline = self.build_pipeline(buffers)
- assert self.pipeline
-
- self.test()
-
- def main(args):
- "GStreamer Buffers-Per-Second tester"
-
- if len(args) < 2:
- print 'usage: %s buffers' % args[0]
- return 1
-
- bps = BPS()
-
- buffers = int(args[1])
- if buffers < 1:
- print 'buffers must be higher than 0'
- return
-
- bps.run(buffers)
-
- if __name__ == '__main__':
- sys.exit(main(sys.argv))
-