/usr/share/gst-python/0.10/examples/vumeter.py is in python-gst0.10-dev 0.10.22-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | #!/usr/bin/env python
# -*- Mode: Python -*-
# vi:si:et:sw=4:sts=4:ts=4
# gst-python
# Copyright (C) 2005 Andy Wingo <wingo@pobox.com>
#
# 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.
# A test more of gst-plugins than of gst-python.
import pygtk
pygtk.require('2.0')
import gtk
import gobject
import pygst
pygst.require('0.10')
import gst
import fvumeter
def clamp(x, min, max):
if x < min:
return min
elif x > max:
return max
return x
class Window(gtk.Dialog):
def __init__(self):
gtk.Dialog.__init__(self, 'Volume Level')
self.prepare_ui()
def prepare_ui(self):
self.set_default_size(200,60)
self.set_title('Volume Level')
self.connect('delete-event', lambda *x: gtk.main_quit())
self.vus = []
self.vus.append(fvumeter.FVUMeter())
self.vus.append(fvumeter.FVUMeter())
self.vbox.add(self.vus[0])
self.vbox.add(self.vus[1])
self.vus[0].show()
self.vus[1].show()
def error(self, message, secondary=None):
m = gtk.MessageDialog(self,
gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
gtk.MESSAGE_ERROR,
gtk.BUTTONS_OK,
message)
if secondary:
m.format_secondary_text(secondary)
m.run()
def on_message(self, bus, message):
if message.structure.get_name() == 'level':
s = message.structure
for i in range(0, len(s['peak'])):
self.vus[i].freeze_notify()
decay = clamp(s['decay'][i], -90.0, 0.0)
peak = clamp(s['peak'][i], -90.0, 0.0)
if peak > decay:
print "ERROR: peak bigger than decay!"
self.vus[i].set_property('decay', decay)
self.vus[i].set_property('peak', peak)
return True
def run(self):
try:
self.set_sensitive(False)
s = 'alsasrc ! level message=true ! fakesink'
pipeline = gst.parse_launch(s)
self.set_sensitive(True)
pipeline.get_bus().add_signal_watch()
i = pipeline.get_bus().connect('message::element', self.on_message)
pipeline.set_state(gst.STATE_PLAYING)
gtk.Dialog.run(self)
pipeline.get_bus().disconnect(i)
pipeline.get_bus().remove_signal_watch()
pipeline.set_state(gst.STATE_NULL)
except gobject.GError, e:
self.set_sensitive(True)
self.error('Could not create pipeline', e.__str__)
if __name__ == '__main__':
w = Window()
w.show_all()
w.run()
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