def get_pipeline_string(self, properties):
dp = ""
if 'drop-probability' in properties:
vt = gstreamer.get_plugin_version('coreelements')
if not vt:
raise errors.MissingElementError('identity')
if not vt > (0, 10, 12, 0):
self.addMessage(
messages.Warning(
T_(
N_("The 'drop-probability' property is specified, but "
"it only works with GStreamer core newer than 0.10.12."
" You should update your version of GStreamer.")
)))
else:
drop_probability = properties['drop-probability']
if drop_probability < 0.0 or drop_probability > 1.0:
self.addMessage(
messages.Warning(
T_(
N_("The 'drop-probability' property can only be "
"between 0.0 and 1.0."))))
else:
dp = " drop-probability=%f" % drop_probability
return 'identity silent=true %s' % dp
def configure_pipeline(self, pipeline, properties):
def notify_pattern(obj, pspec):
self.uiState.set('pattern', int(obj.get_property('pattern')))
source = self.get_element('source')
source.connect('notify::pattern', notify_pattern)
if 'pattern' in properties:
source.set_property('pattern', properties['pattern'])
if 'drop-probability' in properties:
vt = gstreamer.get_plugin_version('coreelements')
if not vt:
raise errors.MissingElementError('identity')
if not vt > (0, 10, 12, 0):
self.addMessage(
messages.Warning(
T_(
N_("The 'drop-probability' property is specified, but "
"it only works with GStreamer core newer than 0.10.12."
" You should update your version of GStreamer.")
)))
else:
drop_probability = properties['drop-probability']
if drop_probability < 0.0 or drop_probability > 1.0:
self.addMessage(
messages.Warning(
T_(
N_("The 'drop-probability' property can only be "
"between 0.0 and 1.0."))))
else:
identity = self.get_element('identity')
identity.set_property('drop-probability', drop_probability)
def __init__(self,
name,
component,
sourcePad,
pipeline,
width,
height,
is_square,
add_borders=False,
width_correction=8,
height_correction=0):
"""
@param element: the video source element on which the post
processing effect will be added
@param pipeline: the pipeline of the element
"""
feedcomponent.PostProcEffect.__init__(
self, name, sourcePad,
VideoscaleBin(width, height, is_square, add_borders,
width_correction, height_correction), pipeline)
self.pipeline = pipeline
self.component = component
vt = gstreamer.get_plugin_version('videoscale')
if not vt:
raise errors.MissingElementError('videoscale')
# 'add-borders' property was added in gst-plugins-base 0.10.29,
# and it's requiered to respect DAR by adding black borders
if not vt > (0, 10, 29, 0):
self.component.addMessage(
messages.Warning(
T_(
N_("The videoscale element correctly "
"works with GStreamer base newer than 0.10.29.1."
"You should update your version of GStreamer."))))
def get_pipeline_string(self, properties):
samplerate = properties.get('samplerate', 44100)
wave = properties.get('wave', 0)
self.samplerate = samplerate
volume = properties.get('volume', 1.0)
is_live = 'is-live=true'
source = 'audiotestsrc'
if not gstreamer.element_factory_exists(source):
raise errors.MissingElementError(source)
return ('%s name=source wave=%s %s ! ' \
'identity name=identity silent=TRUE ! ' \
'audio/x-raw-int,rate=%d ! ' \
'volume name=volume volume=%f ! level name=level'
% (source, wave, is_live, samplerate, volume))
def init(self):
if not gstreamer.get_plugin_version('coreelements'):
raise errors.MissingElementError('identity')
if not gstreamer.element_factory_has_property(
'identity', 'check-imperfect-timestamp'):
self.checkTimestamp = False
self.checkOffset = False
self.addMessage(
messages.Info(
T_(
N_("You will get more debugging information "
"if you upgrade to GStreamer 0.10.13 or later."))))
self.EATER_TMPL = self.FDSRC_TMPL + ' %(queue)s ' + self.DEPAY_TMPL
if self.checkTimestamp or self.checkOffset:
self.EATER_TMPL += " ! identity name=%(name)s-identity silent=TRUE"
if self.checkTimestamp:
self.EATER_TMPL += " check-imperfect-timestamp=1"
if self.checkOffset:
self.EATER_TMPL += " check-imperfect-offset=1"
def configure_pipeline(self, pipeline, properties):
self.fixRenamedProperties(properties, [
('freq', 'frequency'),
])
element = self.get_element('source')
if 'frequency' in properties:
element.set_property('freq', properties['frequency'])
self.uiState.set('frequency', properties['frequency'])
if 'drop-probability' in properties:
vt = gstreamer.get_plugin_version('coreelements')
if not vt:
raise errors.MissingElementError('identity')
if not vt > (0, 10, 12, 0):
self.addMessage(
messages.Warning(
T_(
N_("The 'drop-probability' property is specified, but "
"it only works with GStreamer core newer than 0.10.12."
" You should update your version of GStreamer.")
)))
else:
drop_probability = properties['drop-probability']
if drop_probability < 0.0 or drop_probability > 1.0:
self.addMessage(
messages.Warning(
T_(
N_("The 'drop-probability' property can only be "
"between 0.0 and 1.0."))))
else:
identity = self.get_element('identity')
identity.set_property('drop-probability', drop_probability)
self.uiState.set('samplerate', self.samplerate)
self.uiState.set('wave', int(element.get_property('wave')))
level = pipeline.get_by_name('level')
vol = volume.Volume('volume', level, pipeline)
self.addEffect(vol)
def get_pipeline_string(self, properties):
def getProps():
ret = []
for k, default in (('width', 320), ('height', 240),
('x-offset', 0), ('y-offset', 0), ('framerate',
(5, 1))):
ret.append(properties.get(k, default))
return ret
width, height, x_offset, y_offset, framerate = getProps()
src = 'ximagesrc'
if not gstreamer.element_factory_exists(src):
raise errors.MissingElementError(src)
return (
'%s startx=%d starty=%d endx=%d endy=%d use-damage=false'
' ! ffmpegcolorspace'
' ! video/x-raw-yuv,framerate=(fraction)%s,format=(fourcc)I420' %
(src, x_offset, y_offset, width + x_offset, height + y_offset,
'%d/%d' % framerate))