openpilot v0.9.6 release

date: 2024-01-12T10:13:37
master commit: ba792d576a49a0899b88a753fa1c52956bedf9e6

teleoprtc/info.py

@@ -0,0 +1,27 @@
+
+import dataclasses
+
+import aiortc
+
+
+@dataclasses.dataclass
+class StreamingMediaInfo:
+  n_expected_camera_tracks: int
+  expected_audio_track: bool
+  incoming_audio_track: bool
+  incoming_datachannel: bool
+
+
+def parse_info_from_offer(sdp: str) -> StreamingMediaInfo:
+  """
+  helper function to parse info about outgoing and incoming streams from an offer sdp
+  """
+  desc = aiortc.sdp.SessionDescription.parse(sdp)
+  audio_tracks = [m for m in desc.media if m.kind == "audio"]
+  video_tracks = [m for m in desc.media if m.kind == "video" and m.direction in ["recvonly", "sendrecv"]]
+  application_tracks = [m for m in desc.media if m.kind == "application"]
+  has_incoming_audio_track = next((t for t in audio_tracks if t.direction in ["sendonly", "sendrecv"]), None) is not None
+  has_incoming_datachannel = len(application_tracks) > 0
+  expects_outgoing_audio_track = next((t for t in audio_tracks if t.direction in ["recvonly", "sendrecv"]), None) is not None
+
+  return StreamingMediaInfo(len(video_tracks), expects_outgoing_audio_track, has_incoming_audio_track, has_incoming_datachannel)