/// <summary>
/// Return true if the ssrc is in the conference RtpSession's SSRCToStreamHashtable and the
/// RtpStream reference there is not null.
/// </summary>
/// <param name="ssrc"></param>
/// <returns></returns>
public bool KnownToConferenceListener(uint ssrc)
{
if (confSession != null)
{
SSRCToStreamHashtable ht = (SSRCToStreamHashtable)confSession.Streams.Clone();
if (ht.ContainsKey(ssrc))
{
if (ht[ssrc] != null)
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// Called right before the user wants to begin encoding. Verify
/// all sources are present: RtpStreams are known to the RtpSession,
/// none are null, and all are currently delivering frames.
/// </summary>
/// <param name="audioCnames"></param>
/// <param name="videoCname"></param>
/// <returns></returns>
public String VerifyEncodingStreams()
{
if (confSession == null)
{
return("Conferencing RtpSession does not exist.");
}
Hashtable aht = assrcs.GetRunningSetSSRCs();
Hashtable vht = vssrcs.GetRunningSetSSRCs();
SSRCToStreamHashtable sht = (SSRCToStreamHashtable)confSession.Streams.Clone();
ArrayList streams = new ArrayList();
foreach (uint ssrc in aht.Values)
{
if (!sht.ContainsKey(ssrc))
{
return("Selected audio ssrc is unknown to the RtpSession.");
}
else if (sht[ssrc] == null)
{
return("Selected audio stream does not exist.");
}
streams.Add(sht[ssrc]);
}
foreach (uint ssrc in vht.Values)
{
if (!sht.ContainsKey(ssrc))
{
return("Selected video ssrc is unknown to the RtpSession.");
}
else if (sht[ssrc] == null)
{
return("Selected video stream does not exist.");
}
streams.Add(sht[ssrc]);
}
return(CheckForPausedStreams(streams));
}
