def _updateFilter(self, blockPad):
def unlinkAndReplace(pad, blocked):
self._videoscaler.set_state(gst.STATE_NULL)
self._capsfilter.set_state(gst.STATE_NULL)
self._videobox.set_state(gst.STATE_NULL)
self._configureOutput()
self._videobox.set_state(gst.STATE_PLAYING)
self._videoscaler.set_state(gst.STATE_PLAYING)
self._capsfilter.set_state(gst.STATE_PLAYING)
# unlink the sink and source pad of the old deinterlacer
reactor.callFromThread(blockPad.set_blocked, False)
self._sinkPad.send_event(gstreamer.flumotion_reset_event())
# We might be called from the streaming thread
self.info("Replaced capsfilter")
reactor.callFromThread(blockPad.set_blocked_async, True,
unlinkAndReplace)
def _updateFilter(self, blockPad):
def unlinkAndReplace(pad, blocked):
self._videoscaler.set_state(gst.STATE_NULL)
self._capsfilter.set_state(gst.STATE_NULL)
self._videobox.set_state(gst.STATE_NULL)
self._configureOutput()
self._videobox.set_state(gst.STATE_PLAYING)
self._videoscaler.set_state(gst.STATE_PLAYING)
self._capsfilter.set_state(gst.STATE_PLAYING)
# unlink the sink and source pad of the old deinterlacer
reactor.callFromThread(blockPad.set_blocked, False)
self._sinkPad.send_event(gstreamer.flumotion_reset_event())
# We might be called from the streaming thread
self.info("Replaced capsfilter")
reactor.callFromThread(blockPad.set_blocked_async,
True, unlinkAndReplace)
def _send_reset_event(self):
for elem in self.get_output_elements():
pad = elem.get_pad('sink')
pad.send_event(gstreamer.flumotion_reset_event())
def modify_element_property(self, element_name, property_name, value,
mutable_state=Gst.State.READY,
needs_reset=False):
'''
Sets a property on the fly on a gstreamer element
@param element_name: Name of the gstreamer element
@type element_name: str
@param property_name: Name of the property to change
@type property_name: str
@param value: Value to set
@param mutable_state: Minimum state required to set the property
@type mutable_state: L{Gst.Enum}
@param needs_reset: Whether setting this property requires sending a
'flumotion-reset' event
@type needs_reset: bool
'''
def drop_stream_headers(pad, buf):
if buf.flag_is_set(Gst.BUFFER_FLAG_IN_CAPS):
return False
pad.remove_probe(probes[pad])
return True
probes = {}
element = self.get_element(element_name)
if not element:
self.warning("The property %s cannot be set because the "
"element %s could not be found",
property_name, element_name)
return
state = self.pipeline.get_state(0)[1]
# get the peer pad for each sink pad
sink_pads = [p.get_peer() for p in element.pads()
if p.get_direction() == Gst.PAD_SINK]
src_pads = [p for p in element.pads()
if p.get_direction() == Gst.PAD_SRC]
# Iterate over all the sink pads and block them
for pad in sink_pads:
pad.set_blocked(True)
# If the state of the element is above the mutable state of the
# property, we need to change its state to the mutable one, block the
# sink pads, set the property, unblock the sink pads and set the
# element's state back to its original state
if state > mutable_state:
element.set_state(mutable_state)
element.get_state(0)
element.set_property(property_name, value)
# If the property change cause creating new streamheaders,
# sending a 'flumotion-reset' event is needed to instruct the
# downstream elements like muxers to reset them self
if needs_reset:
for pad in src_pads:
pad.push_event(gstreamer.flumotion_reset_event())
# If a reset is not needed we must make sure to drop the duplicated
# streamheaders, iterating over all the src pads and installing a
# pad_probe to drop them. (eg: theora restarted after a bitrate change
# re-sending the headers again)
else:
for pad in src_pads:
probes[pad] = pad.add_probe(Gst.PadProbeType.BUFFER,
drop_stream_headers, None)
if state > mutable_state:
element.set_state(state)
# Unblock all sink pads
for pad in sink_pads:
pad.set_blocked(False)
def _on_connected(self, element):
self.info("FGDP producer connected")
pad = self.get_element('src').get_pad('src')
pad.push_event(gstreamer.flumotion_reset_event())
def modify_element_property(self,
element_name,
property_name,
value,
mutable_state=gst.STATE_READY,
needs_reset=False):
'''
Sets a property on the fly on a gstreamer element
@param element_name: Name of the gstreamer element
@type element_name: str
@param property_name: Name of the property to change
@type property_name: str
@param value: Value to set
@param mutable_state: Minimum state required to set the property
@type mutable_state: L{gst.Enum}
@param needs_reset: Whether setting this property requires sending a
'flumotion-reset' event
@type needs_reset: bool
'''
def drop_stream_headers(pad, buf):
if buf.flag_is_set(gst.BUFFER_FLAG_IN_CAPS):
return False
pad.remove_buffer_probe(probes[pad])
return True
probes = {}
element = self.get_element(element_name)
if not element:
self.warning(
"The property %s cannot be set because the "
"element %s could not be found", property_name, element_name)
return
state = self.pipeline.get_state(0)[1]
# get the peer pad for each sink pad
sink_pads = [
p.get_peer() for p in element.pads()
if p.get_direction() == gst.PAD_SINK
]
src_pads = [
p for p in element.pads() if p.get_direction() == gst.PAD_SRC
]
# Iterate over all the sink pads and block them
for pad in sink_pads:
pad.set_blocked(True)
# If the state of the element is above the mutable state of the
# property, we need to change its state to the mutable one, block the
# sink pads, set the property, unblock the sink pads and set the
# element's state back to its original state
if state > mutable_state:
element.set_state(mutable_state)
element.get_state(0)
element.set_property(property_name, value)
# If the property change cause creating new streamheaders,
# sending a 'flumotion-reset' event is needed to instruct the
# downstream elements like muxers to reset them self
if needs_reset:
for pad in src_pads:
pad.push_event(gstreamer.flumotion_reset_event())
# If a reset is not needed we must make sure to drop the duplicated
# streamheaders, iterating over all the src pads and installing a
# pad_probe to drop them. (eg: theora restarted after a bitrate change
# re-sending the headers again)
else:
for pad in src_pads:
probes[pad] = pad.add_buffer_probe(drop_stream_headers)
if state > mutable_state:
element.set_state(state)
# Unblock all sink pads
for pad in sink_pads:
pad.set_blocked(False)
def _send_reset_event(self):
for elem in self.get_output_elements():
pad = elem.get_pad("sink")
pad.send_event(gstreamer.flumotion_reset_event())
def _on_connected(self, element):
self.info("FGDP producer connected")
pad = self.get_element('src').get_pad('src')
pad.push_event(gstreamer.flumotion_reset_event())