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#!/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., 51 Franklin Street, Fifth Floor,
# 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))
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