/// <summary>
/// 设置媒体参数请求(实时)
/// </summary>
/// <param name="localIp">本地ip</param>
/// <param name="mediaPort">rtp/rtcp媒体端口(10000/10001)</param>
/// <returns></returns>
private string SetMediaAudio(string localIp, int port, string audioId)
{
SDPConnectionInformation sdpConn = new SDPConnectionInformation(localIp);
SDP sdp = new SDP();
sdp.Version = 0;
sdp.SessionId = "0";
sdp.Username = audioId;
sdp.SessionName = CommandType.Play.ToString();
sdp.Connection = sdpConn;
sdp.Timing = "0 0";
sdp.Address = localIp;
SDPMediaFormat psFormat = new SDPMediaFormat(SDPMediaFormatsEnum.PS);
psFormat.IsStandardAttribute = false;
SDPMediaAnnouncement media = new SDPMediaAnnouncement();
media.Media = SDPMediaTypesEnum.audio;
media.MediaFormats.Add(psFormat);
media.AddExtra("a=sendonly");
media.AddExtra("y=0100000002");
//media.AddExtra("f=v/////a/1/8/1");
media.AddFormatParameterAttribute(psFormat.FormatID, psFormat.Name);
media.Port = port;
sdp.Media.Add(media);
return(sdp.ToString());
}
/// <summary>
/// 设置媒体参数请求(实时)
/// </summary>
/// <param name="localIp">本地ip</param>
/// <param name="mediaPort">rtp/rtcp媒体端口(10000/10001)</param>
/// <returns></returns>
private string SetMediaReq(string localIp, int[] mediaPort)
{
SDPConnectionInformation sdpConn = new SDPConnectionInformation(localIp);
SDP sdp = new SDP();
sdp.Version = 0;
sdp.SessionId = "0";
sdp.Username = _msgCore.LocalSIPId;
sdp.SessionName = CommandType.Play.ToString();
sdp.Connection = sdpConn;
sdp.Timing = "0 0";
sdp.Address = localIp;
SDPMediaFormat psFormat = new SDPMediaFormat(SDPMediaFormatsEnum.PS);
psFormat.IsStandardAttribute = false;
SDPMediaFormat h264Format = new SDPMediaFormat(SDPMediaFormatsEnum.H264);
h264Format.IsStandardAttribute = false;
SDPMediaAnnouncement media = new SDPMediaAnnouncement();
media.Media = SDPMediaTypesEnum.video;
media.MediaFormats.Add(psFormat);
media.MediaFormats.Add(h264Format);
media.AddExtra("a=recvonly");
media.AddFormatParameterAttribute(psFormat.FormatID, psFormat.Name);
media.AddFormatParameterAttribute(h264Format.FormatID, h264Format.Name);
media.Port = mediaPort[0];
sdp.Media.Add(media);
return(sdp.ToString());
}
public static SDPConnectionInformation ParseConnectionInformation(string connectionLine)
{
SDPConnectionInformation connectionInfo = new SDPConnectionInformation();
string[] connectionFields = connectionLine.Substring(2).Trim().Split(' ');
connectionInfo.ConnectionNetworkType = connectionFields[0].Trim();
connectionInfo.ConnectionAddressType = connectionFields[1].Trim();
connectionInfo.ConnectionAddress = connectionFields[2].Trim();
return(connectionInfo);
}
public string GetReceiveIP(string sdpStr)
{
string[] sdpLines = sdpStr.Split('\n');
var targetLine = sdpLines.FirstOrDefault(line => line.Trim().StartsWith("c="));
if (targetLine != null)
{
var conn = SDPConnectionInformation.ParseConnectionInformation(targetLine);
return(conn.ConnectionAddress);
}
return(null);
}
private string GetReceiveIP(string sdpStr)
{
string[] sdpLines = sdpStr.Split('\n');
foreach (var line in sdpLines)
{
if (line.Trim().StartsWith("c="))
{
SDPConnectionInformation conn = SDPConnectionInformation.ParseConnectionInformation(line);
return(conn.ConnectionAddress);
}
}
return(null);
}
/// <summary>
/// 设置媒体参数请求(实时)
/// </summary>
/// <param name="localIp">本地ip</param>
/// <param name="mediaPort">rtp/rtcp媒体端口(10000/10001)</param>
/// <returns></returns>
private string SetMediaAudio(string localIp, int port, string audioId)
{
var sdpConn = new SDPConnectionInformation(localIp);
var sdp = new SDP
{
Version = 0,
SessionId = "0",
Username = audioId,
SessionName = CommandType.Play.ToString(),
Connection = sdpConn,
Timing = "0 0",
Address = localIp
};
var psFormat = new SDPMediaFormat(SDPMediaFormatsEnum.PS)
{
IsStandardAttribute = false
};
var media = new SDPMediaAnnouncement
{
Media = SDPMediaTypesEnum.audio
};
media.MediaFormats.Add(psFormat);
media.AddExtra("a=sendonly");
media.AddExtra("y=0100000002");
//media.AddExtra("f=v/////a/1/8/1");
media.AddFormatParameterAttribute(psFormat.FormatID, psFormat.Name);
media.Port = port;
sdp.Media.Add(media);
return(sdp.ToString());
}
private int test()
{
string sdpStr = @"v=0
o=34010000002000000002 0 0 IN IP4 192.168.95.213
s=Play
c=IN IP4 192.168.95.213
t=0 0
m=video 10000 RTP/AVP 96 98 97
a=sendonly
a=rtpmap:96 PS/90000
a=rtpmap:98 H264/90000
a=rtpmap:97 MPEG4/90000";
string[] sdpLines = sdpStr.Split('\n');
foreach (var line in sdpLines)
{
if (line.Trim().StartsWith("c="))
{
SDPConnectionInformation conn = SDPConnectionInformation.ParseConnectionInformation(line);
}
}
return(0);
}
