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examples/: Updated some examples to 0.9
Original commit message from CVS: * examples/bps.py: * examples/f2f.py: * examples/gstfile.py: Updated some examples to 0.9
This commit is contained in:
Edward Hervey
parent
ce4e6304a2
commit
2488b32b07
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@ -1,3 +1,10 @@
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2005-07-13 Edward Hervey <edward@fluendo.com>
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* examples/bps.py:
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* examples/f2f.py:
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* examples/gstfile.py:
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Updated some examples to 0.9
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2005-07-13 Andy Wingo <wingo@pobox.com>
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* examples/vumeter.py: New file, a VU meter application that reads
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@ -28,6 +28,10 @@ import sys
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import time
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import gobject
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import gtk
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import pygst
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pygst.require('0.9')
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import gst
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class BPS(object):
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@ -42,11 +46,6 @@ class BPS(object):
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spb = dt/self.buffers
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print '\t%d buffers / %fs\t= %f bps\t= %f spb' % (self.buffers, dt, bps, spb)
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def eos(self, sink):
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self.done()
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if self.method in ('gtk', 'c'):
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gst.main_quit()
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def fakesrc(self, buffers):
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src = gst.element_factory_make('fakesrc','src')
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src.set_property('silent', 1)
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@ -65,78 +64,55 @@ class BPS(object):
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pipeline.add(src)
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sink = self.fakesink()
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pipeline.add(sink)
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sink.connect('eos', self.eos)
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src.link(sink)
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return pipeline
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def notify(self, sender, obj, arg):
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prop = obj.get_property(arg.name)
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print 'notify', sender, arg.name, prop
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print prop
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def idle(self, pipeline):
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return pipeline.iterate()
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def test(self, method):
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print '%s:' % (method,),
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self.method = method
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print self.pipeline.get_state()
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self.pipeline.set_state(gst.STATE_PLAYING)
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print self.pipeline.get_state()
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def test(self):
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self.bus = self.pipeline.get_bus()
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if method == 'py':
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self.start = time.time()
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while self.pipeline.iterate():
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pass
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elif method == 'c':
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self.start = time.time()
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gobject.idle_add(self.pipeline.iterate)
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gst.main()
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#elif method == 'gst':
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# self.start = time.time()
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# gtk.idle_add(self.idle, self.pipeline)
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# gtk.main()
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self.start = time.time()
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self.pipeline.set_state(gst.STATE_PLAYING)
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while 1:
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msg = self.bus.poll(gst.MESSAGE_EOS | gst.MESSAGE_ERROR, gst.SECOND)
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if msg:
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break
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self.pipeline.set_state(gst.STATE_NULL)
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self.done()
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def run(self, buffers, methods):
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def run(self, buffers):
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self.buffers = buffers
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print '# Testing buffer processing rate for "fakesrc ! fakesink"'
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#print '# gst = gtk idle loop function in python'
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print '# c = gtk idle loop function in C'
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print '# py = full iterate loop in python'
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print '# all = full iterate loop in C'
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print '# bps = buffers per second'
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print '# spb = seconds per buffer'
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self.pipeline = self.build_pipeline(buffers)
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assert self.pipeline
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#self.pipeline.connect('deep-notify', self.notify)
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map(self.test, methods)
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self.test()
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def main(args):
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"GStreamer Buffers-Per-Second tester"
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if len(args) < 2:
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print 'usage: %s buffers [method method ...]' % args[0]
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print 'usage: %s buffers' % args[0]
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return 1
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bps = BPS()
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buffers = int(args[1])
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if buffers < 0:
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if buffers < 1:
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print 'buffers must be higher than 0'
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return
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methods = args[2:]
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if not methods:
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methods = ('gtk', 'c', 'py', 'all')
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bps.run(buffers, methods)
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bps.run(buffers)
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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@ -23,6 +23,9 @@
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import sys
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import pygst
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pygst.require('0.9')
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import gst
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def handoff_cb(sender, *args):
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@ -31,18 +34,26 @@ def handoff_cb(sender, *args):
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def main(args):
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# create a new bin to hold the elements
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#gst_debug_set_categories(-1)
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bin = gst.parse_launch('fakesrc name=source silent=1 num-buffers=10 ! ' +
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'fakesink name=sink silent=1')
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bin = gst.parse_launch('fakesrc name=source silent=1 num-buffers=10 signal-handoffs=true ! ' +
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'fakesink name=sink silent=1 signal-handoffs=true')
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source = bin.get_by_name('source')
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source.connect('handoff', handoff_cb)
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sink = bin.get_by_name('source')
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source.get_pad("src").connect("have-data", handoff_cb)
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sink = bin.get_by_name('sink')
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sink.connect('handoff', handoff_cb)
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sink.get_pad("sink").connect('have-data', handoff_cb)
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print source, sink
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bus = bin.get_bus()
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res = bin.set_state(gst.STATE_PLAYING);
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assert res
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while bin.iterate():
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pass
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while 1:
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msg = bus.poll(gst.MESSAGE_EOS | gst.MESSAGE_ERROR, gst.SECOND)
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if msg:
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break
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res = bin.set_state(gst.STATE_NULL)
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assert res
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@ -13,6 +13,10 @@ import os
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import sys
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import gobject
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import pygst
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pygst.require('0.9')
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import gst
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def time_to_string(value):
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@ -104,7 +108,7 @@ class Discoverer(gst.Pipeline):
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self.typefind.connect("have-type", self._have_type_cb)
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self.dbin.connect("new-decoded-pad", self._new_decoded_pad_cb)
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self.dbin.connect("unknown-type", self._unknown_type_cb)
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self.dbin.connect("found-tag", self._found_tag_cb)
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#self.dbin.connect("found-tag", self._found_tag_cb)
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self.discover()
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@ -112,11 +116,41 @@ class Discoverer(gst.Pipeline):
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"""iterate on ourself to find the information on the given file"""
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if self.finished:
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return
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self.set_state(gst.STATE_PLAYING)
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if not self.set_state(gst.STATE_PLAYING):
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# the pipeline wasn't able to be set to playing
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self.finished = True
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return
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bus = self.get_bus()
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while 1:
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if not self.iterate():
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if self.finished:
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#print "self.finished, stopping"
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break
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self.set_state(gst.STATE_NULL)
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msg = bus.poll(gst.MESSAGE_ANY, gst.SECOND)
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if msg:
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msg = bus.pop()
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else:
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continue
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if msg.type & gst.MESSAGE_STATE_CHANGED:
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#print "state changed", msg.src.get_name()
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#print msg.parse_state_changed()
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pass
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elif msg.type & gst.MESSAGE_EOS:
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break
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elif msg.type & gst.MESSAGE_TAG:
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for key in msg.parse_tag().keys():
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self.tags[key] = msg.structure[key]
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print msg.structure.to_string()
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elif msg.type & gst.MESSAGE_ERROR:
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print "whooops, error"
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break
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else:
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print "unknown message type"
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print "going to PAUSED"
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#self.set_state(gst.STATE_PAUSED)
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print "going to ready"
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#self.set_state(gst.STATE_READY)
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print "now in ready"
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self.finished = True
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def print_info(self):
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@ -159,18 +193,34 @@ class Discoverer(gst.Pipeline):
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print "%20s :\t" % tag, self.tags[tag]
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def _unknown_type_cb(self, dbin, pad, caps):
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print "unknown type", caps.to_string()
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# if we get an unknown type and we don't already have an
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# audio or video pad, we are finished !
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self.otherstreams.append(caps.to_string())
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if not self.is_video and not self.is_audio:
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self.finished = True
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def _have_type_cb(self, typefind, prob, caps):
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self.mimetype = caps.to_string()
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def _notify_caps_cb(self, pad, args):
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caps = pad.get_negotiated_caps()
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print "caps notify on", pad, ":", caps
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if not caps:
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return
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# the caps are fixed
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# We now get the total length of that stream
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length = pad.get_peer().query(gst.QUERY_TOTAL, gst.FORMAT_TIME)
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q = gst.query_new_position(gst.FORMAT_TIME)
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#print "query refcount", q.__grefcount__
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if pad.get_peer().query(q):
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#print "query refcount", q.__grefcount__
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length = q.structure["end"]
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pos = q.structure["cur"]
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format = q.structure["format"]
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#print "got length", time_to_string(pos), time_to_string(length), format
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else:
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print "query didn't work"
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#length = pad.get_peer().query(gst.QUERY_TOTAL, gst.FORMAT_TIME)
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# We store the caps and length in the proper location
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if "audio" in caps.to_string():
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self.audiocaps = caps
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@ -195,10 +245,23 @@ class Discoverer(gst.Pipeline):
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def _new_decoded_pad_cb(self, dbin, pad, is_last):
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# Does the file contain got audio or video ?
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if "audio" in pad.get_caps().to_string():
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caps = pad.get_caps()
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print "new decoded pad", caps.to_string()
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if "audio" in caps.to_string():
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self.is_audio = True
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elif "video" in pad.get_caps().to_string():
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if caps.is_fixed():
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print "have negotiated caps", caps
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self.audiocaps = caps
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return
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elif "video" in caps.to_string():
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self.is_video = True
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if caps.is_fixed():
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print "have negotiated caps", caps
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self.videocaps = caps
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return
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else:
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print "got a different caps..", caps
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return
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if is_last and not self.is_video and not self.is_audio:
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self.finished = True
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return
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@ -208,20 +271,13 @@ class Discoverer(gst.Pipeline):
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sinkpad = fakesink.get_pad("sink")
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# ... and connect a callback for when the caps are fixed
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sinkpad.connect("notify::caps", self._notify_caps_cb)
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pad.link(sinkpad)
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fakesink.set_state(gst.STATE_PLAYING)
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if pad.link(sinkpad):
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print "##### Couldn't link pad to fakesink"
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#fakesink.set_state(gst.STATE_PLAYING)
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def _found_tag_cb(self, dbin, source, tags):
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self.tags.update(tags)
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def do_iterate(self):
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# this overrides the GstBin 'iterate' method
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# if we have finished discovering we stop the iteration
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if self.finished:
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return False
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# else we call the parent class method
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return gst.Pipeline.do_iterate(self)
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gobject.type_register(Discoverer)
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def main(args):
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