mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-05 17:09:48 +00:00
133 lines
4.1 KiB
Python
Executable file
133 lines
4.1 KiB
Python
Executable file
#!/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))
|