sendSDPStreamMetadataChanged method

Future<String?> sendSDPStreamMetadataChanged(Room room, String callId, String party_id, SDPStreamMetadata metadata, { String version = voipProtoVersion, String? txid, })

Send SdpStreamMetadata Changed event.

This MSC also adds a new call event m.call.sdp_stream_metadata_changed, which has the common VoIP fields as specified in MSC2746 (version, call_id, party_id) and a sdp_stream_metadata object which is the same thing as sdp_stream_metadata in m.call.negotiate, m.call.invite and m.call.answer. The client sends this event the when sdp_stream_metadata has changed but no negotiation is required (e.g. the user mutes their camera/microphone).

callId The ID of the call this event relates to. version is the version of the VoIP specification this message adheres to. This specification is version 1. party_id The party ID for call, Can be set to client.deviceId. metadata The sdp_stream_metadata object.

Implementation

Future<String?> sendSDPStreamMetadataChanged(
    Room room, String callId, String party_id, SDPStreamMetadata metadata,
    {String version = voipProtoVersion, String? txid}) async {
  txid ??= 'txid${DateTime.now().millisecondsSinceEpoch}';
  final content = {
    'call_id': callId,
    'party_id': party_id,
    if (groupCallId != null) 'conf_id': groupCallId,
    'version': version,
    sdpStreamMetadataKey: metadata.toJson(),
  };
  return await _sendContent(
    room,
    EventTypes.CallSDPStreamMetadataChangedPrefix,
    content,
    txid: txid,
  );
}