public async Task ReplaceTrackAsync(IMediaStreamTrack track)
{
if (Closed)
{
// This must be done here. Otherwise there is no chance to stop the given track.
if (track is not null && _stopTracks)
{
try { track.Stop(); }
catch { }
}
throw new Exception("closed");
}
else if (track is not null && track.ReadyState == MediaStreamTrackState.Ended)
{
throw new Exception("track ended");
}
// Do nothing if this is the same track as the current handled one.
if (track == Track)
{
Console.WriteLine("replaceTrack() | same track, ignored");
return;
}
if (!_zeroRtpOnPause || !Paused)
{
await OnReplaceTrackAsync?.Invoke(this, track);
}
// Destroy the previous track.
DestroyTrack();
// Set the new track.
Track = track;
// If this Producer was paused/resumed and the state of the new
// track does not match, fix it.
if (Track is not null && _disableTrackOnPause)
{
if (!Paused)
{
Track.Enabled = true;
}
else if (Paused)
{
Track.Enabled = false;
}
}
// Handle the effective track.
HandleTrack();
}
public void Resume()
{
if (Closed)
{
return;
}
Paused = false;
if (_disableTrackOnPause)
{
Track.Enabled = true;
}
if (_zeroRtpOnPause)
{
OnReplaceTrackAsync?.Invoke(this, Track);
}
}
