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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., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
# Author: David I. Lehn <dlehn@users.sourceforge.net>
#
import sys
import gst
def gst_props_debug_entry(entry, level=0):
name = entry.get_name()
type = entry.get_props_type()
indent = ' '*level
if type == PROPS_INT_TYPE:
ret, val = entry.get_int()
assert ret
print '%s%s: int %d' % (indent, name, val)
elif type == PROPS_FLOAT_TYPE:
ret, val = entry.get_float()
assert ret
print '%s%s: float %f' % (indent, name, val)
elif type == PROPS_FOURCC_TYPE:
ret, val = entry.get_fourcc()
assert ret
print '%s%s: fourcc %c%c%c%c' % (indent, name,
(val>>0)&0xff,
(val>>8)&0xff,
(val>>16)&0xff,
(val>>24)&0xff)
elif type == PROPS_BOOLEAN_TYPE:
ret, val = entry.get_bool()
assert ret
print '%s%s: bool %d' % (indent, name, val)
elif type == PROPS_STRING_TYPE:
ret, val = entry.get_string()
assert ret
print '%s%s: string "%s"' % (indent, name, val)
elif type == PROPS_INT_RANGE_TYPE:
ret, min, max = entry.get_int_range()
assert ret
print '%s%s: int range %d-%d' % (indent, name, min, max)
elif type == PROPS_FLOAT_RANGE_TYPE:
ret, min, max = entry.get_float_range()
assert ret
print '%s%s: float range %f-%f' % (indent, name, min, max)
elif type == PROPS_LIST_TYPE:
ret, val = entry.get_list()
assert ret
print '[list] ('
for e in val:
gst_props_debug_entry(e, level+1)
print ')'
else:
print '%sWARNING: %s: unknown property type %d' % (indent, name, type)
def debug_caps(caps):
props = caps.get_props()
ret, plist = props.get_list()
for e in plist:
gst_props_debug_entry(e, level=1)
def streaminfo(sender, pspec):
assert pspec.name == 'streaminfo'
caps = sender.get_property(pspec.name)
print 'streaminfo:'
debug_caps(caps)
def metadata(sender, pspec):
assert pspec.name == 'metadata'
caps = sender.get_property(pspec.name)
print 'metadata:'
debug_caps(caps)
def decoder_notified(sender, pspec):
if pspec.name == 'streaminfo':
streaminfo(sender, pspec)
elif pspec.name == 'metadata':
metadata(sender, pspec)
else:
print 'notify:', sender, pspec
def main(args):
"Basic example to play an Ogg Vorbis stream through OSS"
if len(args) != 2:
print 'usage: %s <Ogg Vorbis file>' % args
return -1
bin = gst.parse_launch('filesrc name=source ! ' +
'oggdemux name=demuxer ! ' +
'vorbisdec name=decoder ! ' +
'audioconvert ! osssink')
filesrc = bin.get_by_name('source')
filesrc.set_property('location', args[1])
demuxer = bin.get_by_name('demuxer')
demuxer.connect('notify', decoder_notified)
decoder = bin.get_by_name('decoder')
decoder.connect('notify', decoder_notified)
# start playing
bin.set_state(gst.STATE_PLAYING);
try:
while bin.iterate():
pass
except KeyboardInterrupt:
pass
# stop the bin
bin.set_state(gst.STATE_NULL)
if __name__ == '__main__':
sys.exit(main(sys.argv))
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