gajim-plural/src/common/multimedia_helpers.py

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##
## Copyright (C) 2009 Thibaut GIRKA <thib AT sitedethib.com>
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published
## by the Free Software Foundation; version 2 only.
##
## This program 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 General Public License for more details.
##
import gst
class DeviceManager(object):
def __init__(self):
self.devices = {}
def detect(self):
self.devices = {}
def get_devices(self):
if not self.devices:
self.detect()
return self.devices
def detect_element(self, name, text, pipe='%s'):
try:
element = gst.element_factory_make(name, '%spresencetest' % name)
if isinstance(element, gst.interfaces.PropertyProbe):
element.set_state(gst.STATE_READY)
devices = element.probe_get_values_name('device')
if devices:
self.devices[text % _(' Default device')] = pipe % name
for device in devices:
element.set_property('device', device)
device_name = element.get_property('device-name')
self.devices[text % device_name] = pipe % '%s device=%s' % (name, device)
element.set_state(gst.STATE_NULL)
else:
self.devices[text] = pipe % name
except gst.ElementNotFoundError:
print 'element \'%s\' not found' % name
class AudioInputManager(DeviceManager):
def detect(self):
self.devices = {}
# Test src
self.detect_element('audiotestsrc', _('Audio test'),
'%s is-live=true name=gajim_vol')
# Auto src
self.detect_element('autoaudiosrc', _('Autodetect'),
'%s ! volume name=gajim_vol')
# Alsa src
self.detect_element('alsasrc', _('ALSA: %s'),
'%s ! volume name=gajim_vol')
class AudioOutputManager(DeviceManager):
def detect(self):
self.devices = {}
# Fake sink
self.detect_element('fakesink', _('Fake audio output'))
# Auto sink
self.detect_element('autoaudiosink', _('Autodetect'))
# Alsa sink
self.detect_element('alsasink', _('ALSA: %s'),
'%s sync=false')
class VideoInputManager(DeviceManager):
def detect(self):
self.devices = {}
# Test src
self.detect_element('videotestsrc', _('Video test'),
'%s is-live=true')
# Auto src
self.detect_element('autovideosrc', _('Autodetect'))
# V4L2 src ; TODO: Figure out why it doesn't work
self.detect_element('v4l2src', _('V4L2: %s'))
# Funny things, just to test...
# self.devices['GOOM'] = 'audiotestsrc ! goom'
# self.devices['screen'] = 'ximagesrc'
class VideoOutputManager(DeviceManager):
def detect(self):
self.devices = {}
# Fake video output
self.detect_element('fakesink', _('Fake audio output'))
# Auto sink
self.detect_element('xvimagesink', _('X Window System (X11/XShm/Xv): %s'))
# ximagesink
self.detect_element('ximagesink', _('X Window System (without Xv)'))
self.detect_element('autovideosink', _('Autodetect'))