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5dc00dc590
Original commit message from CVS: trying to improve timing accuracy to figure out why python identity is 3x faster than the C one...
111 lines
2.6 KiB
Python
Executable file
111 lines
2.6 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# gst-python
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# Copyright (C) 2002 David I. Lehn
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Library General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Library General Public License for more details.
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#
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# You should have received a copy of the GNU Library General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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#
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# Author: David I. Lehn <dlehn@vt.edu>
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#
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import sys
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from gstreamer import *
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from gobject import GObject
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import time
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from identity import Identity
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def update(sender, *args):
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print sender.get_name(), args
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def build(filters, b):
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# create a new bin to hold the elements
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bin = Pipeline('pipeline')
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src = gst_element_factory_make('fakesrc', 'source');
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assert src
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src.set_property('silent', 1)
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src.set_property('num_buffers', b)
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sink = gst_element_factory_make('fakesink', 'sink')
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assert sink
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sink.set_property('silent', 1)
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elements = [src] + filters + [sink]
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# add objects to the main pipeline
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for e in elements:
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bin.add(e)
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# connect the elements
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previous = None
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for e in elements:
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if previous:
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previous.connect(e)
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previous = e
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return bin
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def filter(bin):
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bin.set_state(STATE_PLAYING);
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while bin.iterate(): pass
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bin.set_state(STATE_NULL)
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ccnt = 0
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def c():
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global ccnt
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id = gst_element_factory_make ('identity', 'c identity %d' % ccnt);
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assert id
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id.set_property('silent', 1)
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id.set_property('loop_based', 0)
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ccnt += 1
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return id
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pcnt = 0
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def py():
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id = Identity()
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assert id
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global pcnt
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id.set_name('py identity %d' % pcnt)
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pcnt += 1
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return id
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def check(f, n, b):
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fs = []
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for i in range(n):
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fs.append(f())
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pipe = build(fs, b)
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start = time.time()
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ret = filter(pipe)
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end = time.time()
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print '%s b:%d i:%d t:%f' % (f, b, n, end - start)
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return ret
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def main():
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"Identity timer and latency check"
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gst_debug_set_categories(0L)
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if len(sys.argv) < 3:
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print 'usage: %s identites buffers' % (sys.argv[0],)
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return -1
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n = int(sys.argv[1])
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b = int(sys.argv[2])
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for f in (c, py):
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check(f, n, b)
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if __name__ == '__main__':
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ret = main()
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sys.exit (ret)
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