public static string GetCodec(this SDP sdp, string MediaType)
{
string codec = string.Empty;
MediaDescription description = sdp.Session.GetMediaDescriptionByName(MediaType);
string attribute = description.GetAttributeValueByName("rtpmap");
if (string.IsNullOrEmpty(attribute) == false)
{
string[] split = attribute.Split(' ');
if (split.Length == 2)
{
string[] values = split[1].Split('/');
codec = values[0];
}
}
return(codec);
}
public static int GetSampleRate(this SDP sdp, string MediaType)
{
int result = int.MaxValue;
MediaDescription description = sdp.Session.GetMediaDescriptionByName(MediaType);
string attribute = description.GetAttributeValueByName("rtpmap");
if (string.IsNullOrEmpty(attribute) == false)
{
string[] split = attribute.Split(' ');
if (split.Length == 2)
{
string[] values = split[1].Split('/');
string str = values[1];
int.TryParse(str, out result);
}
}
return(result);
}
public static string GetControl(this SDP sdp, string MediaType)
{
return(sdp.Session.GetMediaDescriptionByName(MediaType).GetAttributeValueByName("control"));
}
public void Start()
{
RTSPChannelParameters videoParameters = new RTSPChannelParameters {
};
RTSPChannelParameters audioParameters = new RTSPChannelParameters {
};
rtspSession = RTSPSession.Open(this.MediaDevice.ONVIF.GetCurrentMediaProfileRtspStreamUri().AbsoluteUri);
//rtspSession.RTSPServerResponse += new RTSPSession.RTSPResponseHandler(rtsp_RTSPServerResponse);
// OPTIONS возвращает команды сервера
// OPTIONS, DESCRIBE, SETUP, PLAY, PAUSE, GET_PARAMETER, TEARDOWN, SET_PARAMETER
RTSPResponse respons = rtspSession.Options();
// DESCRIBE возвращает SDP файл
respons = rtspSession.Describe();
string ContentBase = respons.ContentBase;
// Парсим SDP пакет
sdp = SDP.Parse(respons.Body);
videoParameters.Codec = sdp.GetCodec(MediaType: "video");
videoParameters.SampleRate = sdp.GetSampleRate(MediaType: "video");
string VideoControl = sdp.GetControl(MediaType: "video");
audioParameters.Codec = sdp.GetCodec(MediaType: "audio");
audioParameters.SampleRate = sdp.GetSampleRate(MediaType: "audio");
string AudioControl = sdp.GetControl(MediaType: "audio");
string VideoSetupUri = String.Format("{0}{1}", ContentBase, VideoControl);
string AudioSetupUri = String.Format("{0}{1}", ContentBase, AudioControl);
int[] ports = GetPortRange(4);
videoParameters.RTPPort = ports[0];
videoParameters.RTCPPort = ports[1];
audioParameters.RTPPort = ports[2];
audioParameters.RTCPPort = ports[3];
respons = rtspSession.Setup(VideoSetupUri, videoParameters.RTPPort, videoParameters.RTCPPort);
rtspSession.Parameters.Session = respons.Session;
videoParameters.SSRT = respons.SSRT;
respons = rtspSession.Setup(AudioSetupUri, audioParameters.RTPPort, audioParameters.RTCPPort, rtspSession.Parameters.Session);
audioParameters.SSRT = respons.SSRT;
respons = rtspSession.Play(rtspSession.Parameters.Session);
videoChannel = new RTSPChannel(videoParameters);
audioChannel = new RTSPChannel(audioParameters);
//audioChannel.DataRecieved += MediaDevice.AVProcessor.AudioDataRecieved;
//videoChannel.DataRecieved += MediaDevice.AVProcessor.VideoDataRecieved;
audioChannel.DataRecieved += MediaDevice.Decoder.AudioDataRecieved;
videoChannel.DataRecieved += MediaDevice.Decoder.VideoDataRecieved;
videoChannel.StartRecieving();
audioChannel.StartRecieving();
}
