Update

subprojects/gst-python/old_examples/bps.py

@@ -0,0 +1,120 @@
+#!/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 02110-1301, 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))