private static Media ReadMedia(TextReader sdpStream, ref KeyValuePair <string, string> value)
{
Media returnValue = new Media(value.Value);
value = GetKeyValue(sdpStream);
// Media title
if (value.Key == "i")
{
value = GetKeyValue(sdpStream);
}
// Connexion optional
if (value.Key == "c")
{
returnValue.Connection = Connection.Parse(value.Value);
value = GetKeyValue(sdpStream);
}
// bandwidth optional
if (value.Key == "b")
{
returnValue.Bandwidth = Bandwidth.Parse(value.Value);
value = GetKeyValue(sdpStream);
}
// enkription key optional
if (value.Key == "k")
{
returnValue.EncriptionKey = EncriptionKey.ParseInvariant(value.Value);
value = GetKeyValue(sdpStream);
}
//Attribut optional multiple
while (value.Key == "a")
{
returnValue.Attributs.Add(Attribut.ParseInvariant(value.Value));
value = GetKeyValue(sdpStream);
}
return(returnValue);
}
/// <summary>
/// Reads the specified SDP stream.
/// As define in RFC 4566
/// </summary>
/// <param name="sdpStream">The SDP stream.</param>
/// <returns></returns>
public static SdpFile Read(TextReader sdpStream)
{
SdpFile returnValue = new SdpFile();
KeyValuePair <string, string> value = GetKeyValue(sdpStream);
// Version mandatory
if (value.Key == "v")
{
returnValue.Version = int.Parse(value.Value, CultureInfo.InvariantCulture);
value = GetKeyValue(sdpStream);
}
else
{
throw new InvalidDataException();
}
// Origin mandatory
if (value.Key == "o")
{
returnValue.Origin = Origin.Parse(value.Value);
value = GetKeyValue(sdpStream);
}
else
{
throw new InvalidDataException();
}
// Session mandatory.
// However the MuxLab HDMI Encoder (TX-500762) Firmware 1.0.6
// does not include the 'Session' so supress InvalidDatarException
if (value.Key == "s")
{
returnValue.Session = value.Value;
value = GetKeyValue(sdpStream);
}
else
{
// throw new InvalidDataException(); // we should throw, but instead we just ignore the error
}
// Session Information optional
if (value.Key == "i")
{
returnValue.SessionInformation = value.Value;
value = GetKeyValue(sdpStream);
}
// Uri optional
if (value.Key == "u")
{
returnValue.Url = new Uri(value.Value);
value = GetKeyValue(sdpStream);
}
// Email optional
if (value.Key == "e")
{
returnValue.Email = value.Value;
value = GetKeyValue(sdpStream);
}
// Phone optional
if (value.Key == "p")
{
returnValue.Phone = value.Value;
value = GetKeyValue(sdpStream);
}
// Connection optional
if (value.Key == "c")
{
returnValue.Connection = Connection.Parse(value.Value);
value = GetKeyValue(sdpStream);
}
// bandwidth optional
if (value.Key == "b")
{
returnValue.Bandwidth = Bandwidth.Parse(value.Value);
value = GetKeyValue(sdpStream);
}
// Timing mandatory
while (value.Key == "t")
{
string timing = value.Value;
string repeat = string.Empty;
value = GetKeyValue(sdpStream);
if (value.Key == "r")
{
repeat = value.Value;
value = GetKeyValue(sdpStream);
}
returnValue.Timings.Add(new Timing(timing, repeat));
}
// timezone optional
if (value.Key == "z")
{
returnValue.TimeZone = SdpTimeZone.ParseInvariant(value.Value);
value = GetKeyValue(sdpStream);
}
// encryption key optional
if (value.Key == "k")
{
returnValue.EncriptionKey = EncriptionKey.ParseInvariant(value.Value);
value = GetKeyValue(sdpStream);
}
//Attribute optional multiple
while (value.Key == "a")
{
returnValue.Attributs.Add(Attribut.ParseInvariant(value.Value));
value = GetKeyValue(sdpStream);
}
// Hack for MuxLab HDMI Encoder (TX-500762) Firmware 1.0.6
// Skip over all other Key/Value pairs until the 'm=' key
while (value.Key != "m")
{
value = GetKeyValue(sdpStream);
}
// Media
while (value.Key == "m")
{
Media newMedia = ReadMedia(sdpStream, ref value);
returnValue.Medias.Add(newMedia);
}
return(returnValue);
}
