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janus: Add options near the top

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Add some script configuration options to choose
between VP8 and H.264 near the top, to modify the video input
source, and to enable/disable RTX support
This commit is contained in:
Jan Schmidt 2020-01-28 00:03:39 +11:00
parent 42c6eac7f1
commit d8e7687132
1 changed files with 15 additions and 4 deletions
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19
webrtc/janus/janusvideoroom.py
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@ -15,6 +15,15 @@ from websockets.exceptions import ConnectionClosed
import attr
# Set to False to send H.264
DO_VP8 = True
# Set to False to disable RTX (lost packet retransmission)
DO_RTX = True
# Choose the video source:
VIDEO_SRC="videotestsrc pattern=ball"
# VIDEO_SRC="v4l2src"
@attr.s
class JanusEvent:
sender = attr.ib(validator=attr.validators.instance_of(int))
@ -66,8 +75,6 @@ from gi.repository import GstWebRTC
gi.require_version('GstSdp', '1.0')
from gi.repository import GstSdp
DO_VP8 = True
if DO_VP8:
( encoder, payloader, rtp_encoding) = ( "vp8enc target-bitrate=500000", "rtpvp8pay", "VP8" )
else:
@ -75,9 +82,9 @@ else:
PIPELINE_DESC = '''
webrtcbin name=sendrecv stun-server=stun://stun.l.google.com:19302
videotestsrc pattern=ball ! video/x-raw,width=320,height=240 ! videoconvert ! queue !
{} ! video/x-raw,width=640,height=480 ! videoconvert ! queue !
{} ! {} ! queue ! application/x-rtp,media=video,encoding-name={},payload=96 ! sendrecv.
'''.format(encoder, payloader, rtp_encoding)
'''.format(VIDEO_SRC, encoder, payloader, rtp_encoding)
def transaction_id():
return ''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(8))
@ -328,6 +335,10 @@ class WebRTCClient:
self.webrtc.connect('on-negotiation-needed', self.on_negotiation_needed)
self.webrtc.connect('on-ice-candidate', self.send_ice_candidate_message)
self.webrtc.connect('pad-added', self.on_incoming_stream)
trans = self.webrtc.emit('get-transceiver', 0)
if DO_RTX:
trans.set_property ('do-nack', True)
self.pipe.set_state(Gst.State.PLAYING)
def extract_ice_from_sdp(self, sdp):