/usr/share/voctomix/voctocore/lib/sources/tcpavsource.py is in voctomix-core 1.0+git4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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from gi.repository import Gst
from lib.config import Config
from lib.sources.avsource import AVSource
from lib.tcpsingleconnection import TCPSingleConnection
ALL_AUDIO_CAPS = Gst.Caps.from_string('audio/x-raw')
ALL_VIDEO_CAPS = Gst.Caps.from_string('video/x-raw')
class TCPAVSource(AVSource, TCPSingleConnection):
def __init__(self, name, port, outputs=None,
has_audio=True, has_video=True):
self.log = logging.getLogger('TCPAVSource[{}]'.format(name))
AVSource.__init__(self, name, outputs, has_audio, has_video)
TCPSingleConnection.__init__(self, port)
def __str__(self):
return 'TCPAVSource[{name}] on tcp-port {port}'.format(
name=self.name,
port=self.boundSocket.getsockname()[1]
)
def on_accepted(self, conn, addr):
deinterlacer = self.build_deinterlacer()
pipeline = """
fdsrc fd={fd} blocksize=1048576 !
queue !
matroskademux name=demux
""".format(
fd=conn.fileno()
)
if deinterlacer:
pipeline += """
demux. !
video/x-raw !
{deinterlacer}
""".format(
deinterlacer=self.build_deinterlacer()
)
self.build_pipeline(pipeline, aelem='demux', velem='deinter')
else:
self.build_pipeline(pipeline, aelem='demux', velem='demux')
self.audio_caps = Gst.Caps.from_string(Config.get('mix', 'audiocaps'))
self.video_caps = Gst.Caps.from_string(Config.get('mix', 'videocaps'))
demux = self.pipeline.get_by_name('demux')
demux.connect('pad-added', self.on_pad_added)
self.pipeline.set_state(Gst.State.PLAYING)
def build_deinterlacer(self):
deinterlace_config = self.get_deinterlace_config()
if deinterlace_config == "assume-progressive":
deinterlacer = "capssetter " \
"caps=video/x-raw,interlace-mode=progressive"
else:
deinterlacer = super().build_deinterlacer()
if deinterlacer != '':
deinterlacer += ' name=deinter'
return deinterlacer
def on_pad_added(self, demux, src_pad):
caps = src_pad.query_caps(None)
self.log.debug('demuxer added pad w/ caps: %s', caps.to_string())
if caps.can_intersect(ALL_AUDIO_CAPS):
self.log.debug('new demuxer-pad is an audio-pad, '
'testing against configured audio-caps')
if not caps.can_intersect(self.audio_caps):
self.log.warning('the incoming connection presented '
'an audio-stream that is not compatible '
'to the configured caps')
self.log.warning(' incoming caps: %s', caps.to_string())
self.log.warning(' configured caps: %s',
self.audio_caps.to_string())
elif caps.can_intersect(ALL_VIDEO_CAPS):
self.log.debug('new demuxer-pad is a video-pad, '
'testing against configured video-caps')
if not caps.can_intersect(self.video_caps):
self.log.warning('the incoming connection presented '
'a video-stream that is not compatible '
'to the configured caps')
self.log.warning(' incoming caps: %s', caps.to_string())
self.log.warning(' configured caps: %s',
self.video_caps.to_string())
self.test_and_warn_interlace_mode(caps)
def on_eos(self, bus, message):
super().on_eos(bus, message)
if self.currentConnection is not None:
self.disconnect()
def on_error(self, bus, message):
super().on_error(bus, message)
if self.currentConnection is not None:
self.disconnect()
def disconnect(self):
self.pipeline.set_state(Gst.State.NULL)
self.pipeline = None
self.close_connection()
def restart(self):
if self.currentConnection is not None:
self.disconnect()
def test_and_warn_interlace_mode(self, caps):
interlace_mode = caps.get_structure(0).get_string('interlace-mode')
deinterlace_config = self.get_deinterlace_config()
if interlace_mode == 'mixed' and deinterlace_config == 'no':
self.log.warning(
'your source sent an interlace_mode-flag in the matroska-'
'container, specifying the source-video-stream is of '
'mixed-mode.\n'
'this is probably a gstreamer-bug which is triggered with '
'recent ffmpeg-versions\n'
'setting [source.{name}] deinterlace=assume-progressive '
'might help see https://github.com/voc/voctomix/issues/137 '
'for more information'.format(name=self.name)
)
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