/// <summary>
/// Test that an SDP payload with multiple media announcements (in this test audio and video) are correctly
/// parsed.
/// </summary>
public void ParseMultipleMediaAnnouncementsUnitTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
string sdpStr = "v=0" + Media.Sdp.SessionDescription.NewLine +
"o=- 13064410510996677 3 IN IP4 10.1.1.2" + Media.Sdp.SessionDescription.NewLine +
"s=Bria 4 release 4.1.1 stamp 74246" + Media.Sdp.SessionDescription.NewLine +
"c=IN IP4 10.1.1.2" + Media.Sdp.SessionDescription.NewLine +
"b=AS:2064" + Media.Sdp.SessionDescription.NewLine +
"t=0 0" + Media.Sdp.SessionDescription.NewLine +
"m=audio 49290 RTP/AVP 0" + Media.Sdp.SessionDescription.NewLine +
"a=sendrecv" + Media.Sdp.SessionDescription.NewLine +
"m=video 56674 RTP/AVP 96" + Media.Sdp.SessionDescription.NewLine +
"b=TIAS:2000000" + Media.Sdp.SessionDescription.NewLine +
"a=rtpmap:96 VP8/90000" + Media.Sdp.SessionDescription.NewLine +
"a=sendrecv" + Media.Sdp.SessionDescription.NewLine +
"a=rtcp-fb:* nack pli";
Media.Sdp.SessionDescription sdp = new Media.Sdp.SessionDescription(sdpStr);
System.Diagnostics.Debug.WriteLine(sdp.ToString());
System.Diagnostics.Debug.Assert(2 == sdp.MediaDescriptions.Count());
System.Diagnostics.Debug.Assert(49290 == sdp.MediaDescriptions.Where(x => x.MediaType == Media.Sdp.MediaType.audio).First().MediaPort);
System.Diagnostics.Debug.Assert(56674 == sdp.MediaDescriptions.Where(x => x.MediaType == Media.Sdp.MediaType.video).First().MediaPort);
}
/// <summary>
/// Creates a copy of another SessionDescription
/// </summary>
/// <param name="other">The SessionDescription to copy</param>
public SessionDescription(SessionDescription other, bool reference = false)
{
SessionDescriptionVersion = other.SessionDescriptionVersion;
OriginatorAndSessionIdentifier = other.OriginatorAndSessionIdentifier;
m_NameLine = other.m_NameLine;
if (reference)
{
m_TimeDescriptions = other.m_TimeDescriptions;
m_MediaDescriptions = other.m_MediaDescriptions;
m_Lines = other.m_Lines;
}
else
{
m_TimeDescriptions = new List <TimeDescription>(other.TimeDescriptions);
m_MediaDescriptions = new List <MediaDescription>(other.m_MediaDescriptions);
m_Lines = new List <SessionDescriptionLine>(other.Lines);
}
}
public void ParseSDPUnitTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
string sdpStr =
"v=0" + Media.Sdp.SessionDescription.NewLine +
"o=root 3285 3285 IN IP4 10.0.0.4" + Media.Sdp.SessionDescription.NewLine +
"s=session" + Media.Sdp.SessionDescription.NewLine +
"c=IN IP4 10.0.0.4" + Media.Sdp.SessionDescription.NewLine +
"t=0 0" + Media.Sdp.SessionDescription.NewLine +
"m=audio 12228 RTP/AVP 0 101" + Media.Sdp.SessionDescription.NewLine +
"a=rtpmap:0 PCMU/8000" + Media.Sdp.SessionDescription.NewLine +
"a=rtpmap:101 telephone-event/8000" + Media.Sdp.SessionDescription.NewLine +
"a=fmtp:101 0-16" + Media.Sdp.SessionDescription.NewLine +
"a=silenceSupp:off - - - -" + Media.Sdp.SessionDescription.NewLine +
"a=ptime:20" + Media.Sdp.SessionDescription.NewLine +
"a=sendrecv";
Media.Sdp.SessionDescription sdp = new Media.Sdp.SessionDescription(sdpStr);
System.Diagnostics.Debug.WriteLine(sdp.ToString());
System.Diagnostics.Debug.Assert("10.0.0.4" == sdp.ConnectionLine.Parts[2], "The connection address was not parsed correctly."); // ToDo: Be better if "Part[3]" was referred to by ConnectionAddress.
System.Diagnostics.Debug.Assert(Media.Sdp.MediaType.audio == sdp.MediaDescriptions.First().MediaType, "The media type not parsed correctly.");
System.Diagnostics.Debug.Assert(12228 == sdp.MediaDescriptions.First().MediaPort, "The connection port was not parsed correctly.");
System.Diagnostics.Debug.Assert(0 == sdp.MediaDescriptions.First().PayloadTypes.First(), "The first media format was incorrect."); // ToDo: Can't cope with multiple media formats?
//Assert.IsTrue(sdp.Media[0].MediaFormats[0].FormatID == 0, "The highest priority media format ID was incorrect.");
//Assert.IsTrue(sdp.Media[0].MediaFormats[0].Name == "PCMU", "The highest priority media format name was incorrect.");
//Assert.IsTrue(sdp.Media[0].MediaFormats[0].ClockRate == 8000, "The highest priority media format clockrate was incorrect.");
System.Diagnostics.Debug.Assert("rtpmap:0 PCMU/8000" == sdp.MediaDescriptions.First().RtpMapLine.Parts[0], "The rtpmap line for the PCM format was not parsed correctly."); // ToDo "Parts" should be put into named properties where possible.
}
public void ParseICESessionAttributesUnitTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
string sdpStr =
"v=0" + Media.Sdp.SessionDescription.NewLine +
"o=jdoe 2890844526 2890842807 IN IP4 10.0.1.1" + Media.Sdp.SessionDescription.NewLine +
"s=" + Media.Sdp.SessionDescription.NewLine +
"c=IN IP4 192.0.2.3" + Media.Sdp.SessionDescription.NewLine +
"t=0 0" + Media.Sdp.SessionDescription.NewLine +
"a=ice-pwd:asd88fgpdd777uzjYhagZg" + Media.Sdp.SessionDescription.NewLine +
"a=ice-ufrag:8hhY" + Media.Sdp.SessionDescription.NewLine +
"m=audio 45664 RTP/AVP 0" + Media.Sdp.SessionDescription.NewLine +
"b=RS:0" + Media.Sdp.SessionDescription.NewLine +
"b=RR:0" + Media.Sdp.SessionDescription.NewLine +
"a=rtpmap:0 PCMU/8000" + Media.Sdp.SessionDescription.NewLine +
"a=candidate:1 1 UDP 2130706431 10.0.1.1 8998 typ host" + Media.Sdp.SessionDescription.NewLine +
"a=candidate:2 1 UDP 1694498815 192.0.2.3 45664 typ srflx raddr 10.0.1.1 rport 8998";
Media.Sdp.SessionDescription sdp = new Media.Sdp.SessionDescription(sdpStr);
System.Diagnostics.Debug.WriteLine(sdp.ToString());
//ToDo: Add ICE attributes.
//System.Diagnostics.Debug.Assert("8hhY" == sdp.IceUfrag, "The ICE username was not parsed correctly.");
//System.Diagnostics.Debug.Assert("asd88fgpdd777uzjYhagZg" == sdp.IcePwd, "The ICE password was not parsed correctly.");
}
//E.g. This index can be used in GetTimeDescription(index)
public static int GetIndexFor(this SessionDescription sdp, TimeDescription td)
{
if (sdp == null || td == null)
{
return(-1);
}
return(sdp.m_TimeDescriptions.IndexOf(td));
}
//Naming is weird, this returns the logical 0 based index of the given description within the sessionDescription's property of the same type.
//E.g. This index can be used in GetMediaDescription(index)
public static int GetIndexFor(this SessionDescription sdp, MediaDescription md)
{
if (sdp == null || md == null)
{
return(-1);
}
return(sdp.m_MediaDescriptions.IndexOf(md));
}
/// <summary>
/// <see fref="https://tools.ietf.org/html/rfc2326#page-80">Use of SDP for RTSP Session Descriptions</see>
/// In brief an the given <see cref="SessionDescription"/> must contain a <see cref="Sdp.Lines.ConnectionLine"/> in the <see cref="Sdp.MediaDescription"/>
/// </summary>
/// <param name="sdp"></param>
/// <param name="controlUri"></param>
/// <param name="baseUri"></param>
/// <returns></returns>
public static bool SupportsAggregateMediaControl(this SessionDescription sdp, out Uri controlUri, Uri baseUri = null)
{
controlUri = null;
SessionDescriptionLine controlLine = sdp.ControlLine;
//If there is a control line in the SDP it contains the URI used to setup and control the media
if (controlLine == null)
{
return(false);
}
//Get the control token
string controlPart = controlLine.Parts.Where(p => p.Contains(AttributeFields.Control)).FirstOrDefault();
//If there is a controlPart in the controlLine
if (false == string.IsNullOrWhiteSpace(controlPart))
{
/*
* If this attribute contains only an asterisk (*), then the URL is
* treated as if it were an empty embedded URL, and thus inherits the
* entire base URL.
*/
controlPart = controlPart.Split(Media.Sdp.SessionDescription.ColonSplit, 2, StringSplitOptions.RemoveEmptyEntries).Last();
//if unqualified then there is no aggregate control.
if (controlPart == SessionDescription.WildcardString && baseUri == null)
{
return(false);
}
//The control uri may be in the control part
//Try to parse it
if (Uri.TryCreate(controlPart, UriKind.RelativeOrAbsolute, out controlUri))
{
//If parsing suceeded then the result is true only if the controlUri is absolute
if (controlUri.IsAbsoluteUri)
{
return(true);
}
}
//Try to create a uri relative to the base uri given
if (Uri.TryCreate(baseUri, controlUri, out controlUri))
{
//If the operation succeeded then the result is true.
return(true);
}
}
//Another type of control line is present.
return(false);
}
public string ToString(SessionDescription sdp = null)
{
StringBuilder builder = new StringBuilder();
builder.Append(TimeDescriptionLine.ToString());
foreach (Lines.SessionRepeatTimeLine repeatTime in RepeatLines)
{
builder.Append(repeatTime.ToString());
}
return(builder.ToString());
}
public void ParseBriaSDPUnitTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
string sdpStr = "v=0\r\no=- 5 2 IN IP4 10.1.1.2\r\ns=CounterPath Bria\r\nc=IN IP4 144.137.16.240\r\nt=0 0\r\nm=audio 34640 RTP/AVP 0 8 101\r\na=sendrecv\r\na=rtpmap:101 telephone-event/8000\r\na=fmtp:101 0-15\r\na=alt:1 1 : STu/ZtOu 7hiLQmUp 10.1.1.2 34640\r\n";
Media.Sdp.SessionDescription sdp = new Media.Sdp.SessionDescription(sdpStr);
System.Diagnostics.Debug.WriteLine(sdp.ToString());
System.Diagnostics.Debug.Assert("144.137.16.240" == sdp.ConnectionLine.Parts[2], "The connection address was not parsed correctly.");
System.Diagnostics.Debug.Assert(34640 == sdp.MediaDescriptions.First().MediaPort, "The connection port was not parsed correctly.");
System.Diagnostics.Debug.Assert(0 == sdp.MediaDescriptions.First().PayloadTypes.First(), "The highest priority media format ID was incorrect.");
}
public void TestSessionDescriptionSpecifyingFeedback()
{
string testVector = @"v=0
o=- 1 1 IN IP4 127.0.0.1
s=Test
a=type:broadcast
t=0 0
c=IN IP4 0.0.0.0
m=video 0 RTP/AVP 96
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1;profile-level-id=640028;sprop-parameter-sets=Z2QAKKy0BQHv+A0CAAAcIAACvyHsQPoAALQN3//x2IH0AAFoG7//4UA=,aM48bJCRjhwfHDgkEwlzioJgqFA1wx+cVBMFQoGuGPyCoYGjBx5gh+hEICRA48w79CIQEiBx5h38;
a=control:track0
a=rtcp-fb:96 nack";
using (Media.Sdp.SessionDescription sd = new Media.Sdp.SessionDescription(testVector))
{
Console.WriteLine(sd.ToString());
//Verify the line count
System.Diagnostics.Debug.Assert(sd.Lines.Count() == 11, "Did not find all lines");
//Check for the MediaDescription
System.Diagnostics.Debug.Assert(sd.MediaDescriptions.Count() == 1, "Cannot find MediaDescription");
var md = sd.MediaDescriptions.First();
System.Diagnostics.Debug.Assert(md != null, "Cannot find MediaDescription");
//Count the line in the media description (including itself)
System.Diagnostics.Debug.Assert(md.Lines.Count() == 5, "Cannot find corrent amount of lines in MediaDescription");
var fmtp = md.FmtpLine;
System.Diagnostics.Debug.Assert(fmtp != null, "Cannot find FmtpLine in MediaDescription");
string expected = "a=fmtp:96 packetization-mode=1;profile-level-id=640028;sprop-parameter-sets=Z2QAKKy0BQHv+A0CAAAcIAACvyHsQPoAALQN3//x2IH0AAFoG7//4UA=,aM48bJCRjhwfHDgkEwlzioJgqFA1wx+cVBMFQoGuGPyCoYGjBx5gh+hEICRA48w79CIQEiBx5h38;\r\n";
System.Diagnostics.Debug.Assert(string.Compare(fmtp.ToString(), expected, StringComparison.InvariantCultureIgnoreCase) == 0, "Did not output correct FmtpLine line");
var rtpMap = md.RtpMapLine;
System.Diagnostics.Debug.Assert(rtpMap != null, "Cannot find RtpMapLine in MediaDescription");
expected = "a=rtcp-fb:96 nack\r\n";
System.Diagnostics.Debug.Assert(string.Compare(sd.AttributeLines.Last().ToString(), expected, StringComparison.InvariantCultureIgnoreCase) == 0, "Did not output correct feedback line");
System.Diagnostics.Debug.Assert(sd.AttributeLines.Last() == md.AttributeLines.Last(), "Both last attribute lines should be equal to each other");
}
}
public void CreateSessionDescriptionModifySessionVersionUnitTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
using (Media.Sdp.SessionDescription sdp = new Media.Sdp.SessionDescription(0, "v√ƒ", "Bandit"))
{
//update version was specified false so the verison of the document should have updated.
System.Diagnostics.Debug.Assert(sdp.DocumentVersion == 0, "Did not find Correct SessionVersion");
//Add a connection line, updating the version
sdp.Add(new Media.Sdp.Lines.SessionConnectionLine()
{
ConnectionNetworkType = "IN",
ConnectionAddressType = "*",
ConnectionAddress = "0.0.0.0"
});
System.Diagnostics.Debug.Assert(sdp.Lines.Count() == 4, "Did not have correct amount of Lines");
long sessionVersion = 9223372036802072014;
//update version was specified false so the verison of the document should have updated.
System.Diagnostics.Debug.Assert(sdp.DocumentVersion == 1, "Did not find Correct SessionVersion");
sdp.DocumentVersion = sessionVersion;
string expected = "v=0\r\no=v√ƒ 9223372036802072014 \r\ns=Bandit\r\nc=IN * 0.0.0.0\r\n";
System.Diagnostics.Debug.Assert(string.Compare(sdp.ToString(), expected) == 0, "Did not output correct result.");
//Try to get a token to update the document
var token = sdp.BeginUpdate();
//Do another update to test modification doesn't freeze?
++sdp.DocumentVersion;
//End the update
sdp.EndUpdate(token, true);
//update version was specified false so the verison of the document should have updated.
System.Diagnostics.Debug.Assert(sdp.DocumentVersion == sessionVersion + 1, "Did not find Correct SessionVersion");
//Do another update
++sdp.DocumentVersion;
System.Diagnostics.Debug.Assert(sdp.DocumentVersion == sessionVersion + 2, "Did not find Correct SessionVersion");
}
}
public void CreateSessionDescriptionUnitTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
string originatorAndSession = String.Format("{0} {1} {2} {3} {4} {5}", "-", "62464", "0", "IN", "IP4", "10.1.1.2");
string profile = "RTP/AVP";
Media.Sdp.MediaType mediaType = Media.Sdp.MediaType.audio;
int mediaPort = 15000;
int mediaFormat = 0;
string sessionName = "MySessionName";
//The document will have a DocumentVersion of 0 by default.
//Version will be set (v=) which will try to update the version but there is no originator.
//Originator is set which causes an update in version but because there was no originator the version is 0
//Once the originator is set (which maintains the DocumentVersion)
//It can then be increased, the constructor does not do this for you.
using (var audioDescription = new Media.Sdp.SessionDescription(mediaFormat, originatorAndSession, sessionName))
{
//Ensure the correct SessionDescriptionVersion was set
System.Diagnostics.Debug.Assert(audioDescription.SessionDescriptionVersion == 0, "Did not find Correct SessionDescriptionVersion");
//When created the version of the `o=` line should be 1.
System.Diagnostics.Debug.Assert(audioDescription.DocumentVersion == 0, "Did not find Correct SessionVersion");
//Add the MediaDescription
audioDescription.Add(new Media.Sdp.MediaDescription(Media.Sdp.MediaType.audio, mediaPort, profile, 0), false);
//update version was specified false so the verison of the document should not change
System.Diagnostics.Debug.Assert(audioDescription.DocumentVersion == 0, "Did not find Correct SessionVersion");
//Determine what the output should look like
string expected = string.Format("v=0\r\no={0}\r\ns={1}\r\nm={2} {3} RTP/AVP {4}\r\n", originatorAndSession, sessionName, mediaType, mediaPort, mediaFormat);
//Make a string from the instance
string actual = audioDescription.ToString();
//Check the result of the comparsion
System.Diagnostics.Debug.Assert(string.Compare(expected, actual) == 0, "Did not output expected result");
}
}
public void TestInitialObjectDescriptor()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
string testVector = @"v=0
o=- 1183588701 6 IN IP4 10.3.1.221
s=Elecard NWRenderer
i=Elecard streaming
u=http://www.elecard.com
[email protected]
c=IN IP4 239.255.0.1/64
b=CT:0
a=ISMA-compliance:2,2.0,2
a=mpeg4-iod: ""data:application/mpeg4-iod;base64,AoE8AA8BHgEBAQOBDAABQG5kYXRhOmFwcGxpY2F0aW9uL21wZWc0LW9kLWF1O2Jhc2U2NCxBVGdCR3dVZkF4Y0F5U1FBWlFRTklCRUFGM0FBQVBvQUFBRERVQVlCQkE9PQEbAp8DFQBlBQQNQBUAB9AAAD6AAAA+gAYBAwQNAQUAAMgAAAAAAAAAAAYJAQAAAAAAAAAAA2EAAkA+ZGF0YTphcHBsaWNhdGlvbi9tcGVnNC1iaWZzLWF1O2Jhc2U2NCx3QkFTZ1RBcUJYSmhCSWhRUlFVL0FBPT0EEgINAAAUAAAAAAAAAAAFAwAAQAYJAQAAAAAAAAAA""
m=video 10202 RTP/AVP 98
a=rtpmap:98 H264/90000
a=control:trackID=1
a=fmtp:98 packetization-mode=1; profile-level-id=4D001E; sprop-parameter-sets=Z00AHp5SAWh7IA==,aOuPIAAA
a=mpeg4-esid:201
m=audio 10302 RTP/AVP 96
a=rtpmap:96 mpeg4-generic/48000/2
a=control:trackID=2
a=fmtp:96 streamtype=5; profile-level-id=255; mode=AAC-hbr; config=11900000000000000000; objectType=64; sizeLength=13; indexLength=3; indexDeltaLength=3
a=mpeg4-esid:101";
Media.Sdp.SessionDescription sd = new Media.Sdp.SessionDescription(testVector);
Console.WriteLine(sd.ToString());
//Get the inital object descriptor line
Media.Sdp.SessionDescriptionLine mpeg4IodLine = sd.Lines.Where(l => l.Type == 'a' && l.Parts.Any(p => p.Contains("mpeg4-iod"))).FirstOrDefault();
System.Diagnostics.Debug.Assert(mpeg4IodLine != null, "Cannot find InitialObjectDescriptor Line");
System.Diagnostics.Debug.Assert(mpeg4IodLine.Parts.Last() == "base64,AoE8AA8BHgEBAQOBDAABQG5kYXRhOmFwcGxpY2F0aW9uL21wZWc0LW9kLWF1O2Jhc2U2NCxBVGdCR3dVZkF4Y0F5U1FBWlFRTklCRUFGM0FBQVBvQUFBRERVQVlCQkE9PQEbAp8DFQBlBQQNQBUAB9AAAD6AAAA+gAYBAwQNAQUAAMgAAAAAAAAAAAYJAQAAAAAAAAAAA2EAAkA+ZGF0YTphcHBsaWNhdGlvbi9tcGVnNC1iaWZzLWF1O2Jhc2U2NCx3QkFTZ1RBcUJYSmhCSWhRUlFVL0FBPT0EEgINAAAUAAAAAAAAAAAFAwAAQAYJAQAAAAAAAAAA\"", "InitialObjectDescriptor Line Contents invalid.");
}
/// <summary>
/// Parses the <see cref="MediaDescription.ControlLine"/> and if present
/// </summary>
/// <param name="mediaDescription"></param>
/// <param name="source"></param>
/// <returns></returns>
public static Uri GetAbsoluteControlUri(this MediaDescription mediaDescription, Uri source, SessionDescription sessionDescription = null)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (mediaDescription == null)
{
return(source);
}
if (false == source.IsAbsoluteUri)
{
throw new InvalidOperationException("source.IsAbsoluteUri must be true.");
}
SessionDescriptionLine controlLine = mediaDescription.ControlLine;
//If there is a control line in the SDP it contains the URI used to setup and control the media
if (controlLine != null)
{
//Todo, make typed line for controlLine
// GC: Rewrote this somewhat because it was destroying valid absolute URL provided by AXIS media server in the MediaDescription Control field.
// This make break media servers which use a relative path. TODO: Test with other servers.
string controlPart = "";
if (controlLine.Parts.Count() > 2)
{
foreach (string part in controlLine.Parts)
{
if (part == "control")
{
}
else if (part == "rtsp")
{
controlPart += part + ":";
}
else
{
controlPart += part;
}
}
}
else
{
controlPart = controlLine.Parts.Last();
}
//If there is a controlPart in the controlLine
if (false == string.IsNullOrWhiteSpace(controlPart))
{
//Prepare the part
// GC: Commented this out because it was destroying valid absolute URL provided by AXIS media server in the MediaDescription Control field.
// This make break media servers which use a relative path. TODO: Test with other servers.
//controlPart = controlPart.Split(Media.Sdp.SessionDescription.ColonSplit, 2, StringSplitOptions.RemoveEmptyEntries).Last();
//Create a uri
Uri controlUri = new Uri(controlPart, UriKind.RelativeOrAbsolute);
//Determine if its a Absolute Uri
if (controlUri.IsAbsoluteUri)
{
return(controlUri);
}
//Return a new uri using the original string and the controlUri relative path.
//Hopefully the direction of the braces matched..
//string.Join(source.OriginalString, controlUri.OriginalString);
return(new Uri(source.OriginalString.EndsWith(SessionDescription.ForwardSlashString) ? source.OriginalString + controlUri.OriginalString : string.Join(SessionDescription.ForwardSlashString, source.OriginalString, controlUri.OriginalString)));
//Todo, ensure that any parameters have also been restored...
#region Explination
//I wonder if Mr./(Dr) Fielding is happy...
//Let source =
//rtsp://alt1.v7.cache3.c.youtube.com/CigLENy73wIaHwmddh2T-s8niRMYDSANFEgGUgx1c2VyX3VwbG9hZHMM/0/0/0/1/video.3gp/trackID=0
//Call
//return new Uri(source, controlUri);
//Result =
//rtsp://alt1.v7.cache3.c.youtube.com/CigLENy73wIaHwmddh2T-s8niRMYDSANFEgGUgx1c2VyX3VwbG9hZHMM/0/0/0/1/trackID=0
//Useless when the source doesn't end with '/', e.g. same problem with Uri constructor.
//System.UriBuilder builder = new UriBuilder(source);
//builder.Path += controlUri.ToString();
//"rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov/trackID=1"
#endregion
}
}
//Try to take the session level control uri
Uri sessionControlUri;
//If there was a session description given and it supports aggregate media control then return that uri
if (sessionDescription != null && sessionDescription.SupportsAggregateMediaControl(out sessionControlUri, source))
{
return(sessionControlUri);
}
//There is no control line, just return the source.
return(source);
}
public string ToString(SessionDescription sdp = null)
{
StringBuilder buffer = new StringBuilder();
//Check if the mapping matches..., should not be done at this level.
//All instance still need the sdp in ToString to check if the encoding matches?
//if (sdp != null)
//{
// //Todo, maybe use m_Type because the line may not be typed as a ConnectionLine yet.
// Sdp.Lines.SessionConnectionLine connectionLine = sdp.Lines.OfType<Sdp.Lines.SessionConnectionLine>().FirstOrDefault();
// /*
// If multiple addresses are specified in the "c=" field and multiple
// ports are specified in the "m=" field, a one-to-one mapping from
// port to the corresponding address is implied. For example:
// c=IN IP4 224.2.1.1/127/2
// m=video 49170/2 RTP/AVP 31
// */
// if (connectionLine != null && connectionLine.HasMultipleAddresses)
// {
// int numberOfAddresses = connectionLine.NumberOfAddresses;
// if (numberOfAddresses > 1)
// {
// //buffer.Append(Sdp.Lines.SessionMediaDescriptionLine.MediaDescriptionType.ToString() + Sdp.SessionDescription.EqualsSign + string.Join(SessionDescription.Space.ToString(), MediaType, MediaPort.ToString() + ((char)Common.ASCII.ForwardSlash).ToString() + numberOfAddresses.ToString(), MediaProtocol, MediaFormat) + SessionDescription.NewLineString);
// buffer.Append(Sdp.Lines.SessionMediaDescriptionLine.MediaDescriptionType);
// buffer.Append(Sdp.SessionDescription.EqualsSign);
// buffer.Append(
// string.Join(SessionDescription.Space.ToString(), MediaType, MediaPort.ToString() + ((char)Common.ASCII.ForwardSlash).ToString() + numberOfAddresses.ToString(), MediaProtocol, MediaFormat)
// );
// buffer.Append(SessionDescription.NewLineString)
// goto LinesOnly;
// }
// }
//}
//Note if Unassigned MediaFormat is used that this might have to be a 'char' to be exactly what was given
buffer.Append(MediaDescriptionLine.ToString());
//LinesOnly:
foreach (SessionDescriptionLine l in m_Lines.Where(l => l.m_Type != Sdp.Lines.SessionBandwidthLine.BandwidthType && l.m_Type != Sdp.Lines.SessionAttributeLine.AttributeType))
{
buffer.Append(l.ToString());
}
foreach (SessionDescriptionLine l in m_Lines.Where(l => l.m_Type == Sdp.Lines.SessionBandwidthLine.BandwidthType))
{
buffer.Append(l.ToString());
}
foreach (SessionDescriptionLine l in m_Lines.Where(l => l.m_Type == Sdp.Lines.SessionAttributeLine.AttributeType))
{
buffer.Append(l.ToString());
}
return(buffer.ToString());
}
//Should have a date when or should return the date playable, which would then be used by another method to compare against a time.
public static bool IsPlayable(this MediaDescription mediaDescription, SessionDescription sessionDescription) //, DateTime? check = null) ,TimeSpan within = TimeSpan.Zero
{
if (Common.IDisposedExtensions.IsNullOrDisposed(mediaDescription) || Common.IDisposedExtensions.IsNullOrDisposed(sessionDescription))
{
return(false);
}
//Get index of mediaDesription
//Check TimeDescription @ index.
TimeDescription td = GetTimeDescription(mediaDescription, sessionDescription);
//Assume true
if (Common.IDisposedExtensions.IsNullOrDisposed(td))
{
return(true);
}
//Unbound start and end ?
if (td.IsPermanent)
{
return(true);
}
//Notes multiple calls to UtcNow... (avoid with a within parameter)?
try
{
//Ensure not a bounded end and that the end time is less than now
if (false.Equals(td.StopTime.Equals(0))
&&
td.NtpStopDateTime >= DateTime.UtcNow)
{
return(false);
}
//Ensure start time is not bounded and that the start time is greater than now
if (false.Equals(td.StartTime.Equals(0))
&&
td.NtpStartDateTime > DateTime.UtcNow)
{
return(false);
}
//Check repeat times.
//td.RepeatTimes;
}
//Todo, should not access property again during exception especially when out of range is potential.
catch
{
//Out of range values for conversion, assume true if end is unbounded
if (false.Equals(td.StopTime.Equals(0)))
{
return(false);
}
}
finally
{
td = null;
}
return(true);
}
/// <summary>
/// Parses the <see cref="MediaDescription.ControlLine"/> and if present
/// </summary>
/// <param name="mediaDescription"></param>
/// <param name="source"></param>
/// <returns></returns>
public static Uri GetAbsoluteControlUri(this MediaDescription mediaDescription, Uri source, SessionDescription sessionDescription = null)
{
if (object.ReferenceEquals(source, null))
{
throw new ArgumentNullException("source");
}
if (Common.IDisposedExtensions.IsNullOrDisposed(mediaDescription))
{
return(source);
}
if (source.IsAbsoluteUri.Equals(false))
{
throw new InvalidOperationException("source.IsAbsoluteUri must be true.");
}
SessionDescriptionLine controlLine = mediaDescription.ControlLine;
//If there is a control line in the SDP it contains the URI used to setup and control the media
if (object.ReferenceEquals(controlLine, null).Equals(false))
{
//Todo, make typed line for controlLine
string controlPart = controlLine.Parts.Last(); //controlLine.Parts.Where(p => p.StartsWith(AttributeFields.Control)).FirstOrDefault();
//If there is a controlPart in the controlLine
if (string.IsNullOrWhiteSpace(controlPart).Equals(false))
{
//Prepare the part
controlPart = controlPart.Split(Media.Sdp.SessionDescription.ColonSplit, 2, StringSplitOptions.RemoveEmptyEntries).Last();
//Create a uri
Uri controlUri = new Uri(controlPart, UriKind.RelativeOrAbsolute);
//Determine if its a Absolute Uri
if (controlUri.IsAbsoluteUri)
{
return(controlUri);
}
//Return a new uri using the original string and the controlUri relative path.
//Hopefully the direction of the braces matched..
//string.Join(source.OriginalString, controlUri.OriginalString);
return(new Uri(source.OriginalString.EndsWith(SessionDescription.ForwardSlashString) ? source.OriginalString + controlUri.OriginalString : string.Join(SessionDescription.ForwardSlashString, source.OriginalString, controlUri.OriginalString)));
//Todo, ensure that any parameters have also been restored...
#region Explination
//I wonder if Mr./(Dr) Fielding is happy...
//Let source =
//rtsp://alt1.v7.cache3.c.youtube.com/CigLENy73wIaHwmddh2T-s8niRMYDSANFEgGUgx1c2VyX3VwbG9hZHMM/0/0/0/1/video.3gp/trackID=0
//Call
//return new Uri(source, controlUri);
//Result =
//rtsp://alt1.v7.cache3.c.youtube.com/CigLENy73wIaHwmddh2T-s8niRMYDSANFEgGUgx1c2VyX3VwbG9hZHMM/0/0/0/1/trackID=0
//Useless when the source doesn't end with '/', e.g. same problem with Uri constructor.
//System.UriBuilder builder = new UriBuilder(source);
//builder.Path += controlUri.ToString();
//"rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov/trackID=1"
#endregion
}
}
//Try to take the session level control uri
Uri sessionControlUri;
//If there was a session description given and it supports aggregate media control then return that uri
if (Common.IDisposedExtensions.IsNullOrDisposed(sessionDescription).Equals(false) && sessionDescription.SupportsAggregateMediaControl(out sessionControlUri, source))
{
return(sessionControlUri);
}
//There is no control line, just return the source.
return(source);
}
public void IssueSessionDescriptionWithMediaDescriptionWithPortRange()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
string testVector = @"v=0
o=- 3 8 IN IP4 10.16.1.22
s=stream1
i=H264 session of stream1
u=http://10.16.1.22
c=IN IP4 239.1.1.22/64/1
t=0 0
m=video 5006/1 RTP/AVP 102
i=Video stream
c=IN IP4 239.1.1.22/64/1
a=fmtp:102 width=1280;height=720;depth=0;framerate=30000;fieldrate=30000;
a=framerate:30
a=rtpmap:102 H264/90000";
using (Media.Sdp.SessionDescription sd = new Media.Sdp.SessionDescription(testVector))
{
Console.WriteLine(sd.ToString());
//Verify the line count
System.Diagnostics.Debug.Assert(sd.Lines.Count() == 13, "Did not find all lines");
//Check for the MediaDescription
System.Diagnostics.Debug.Assert(sd.MediaDescriptions.Count() == 1, "Cannot find MediaDescription");
var md = sd.MediaDescriptions.First();
System.Diagnostics.Debug.Assert(md != null, "Cannot find MediaDescription");
//Count the line in the media description (including itself)
System.Diagnostics.Debug.Assert(md.Lines.Count() == 6, "Cannot find corrent amount of lines in MediaDescription");
var fmtp = md.FmtpLine;
System.Diagnostics.Debug.Assert(fmtp != null, "Cannot find FmtpLine in MediaDescription");
var rtpMap = md.RtpMapLine;
System.Diagnostics.Debug.Assert(rtpMap != null, "Cannot find RtpMapLine in MediaDescription");
//Verify and set the port range.
System.Diagnostics.Debug.Assert(md.PortRange.HasValue, "Cannot find MediaDescription.PortRange");
System.Diagnostics.Debug.Assert(md.PortRange == 1, "Did not find the correct MediaDescription.PortRange");
//Remove the port range.
md.PortRange = null;
System.Diagnostics.Debug.Assert(md.PortRange.HasValue == false, "Did not find the correct MediaDescription.PortRange");
string expectedMediaDescription = "m=video 5006 RTP/AVP 102\r\ni=Video stream\r\nc=IN IP4 239.1.1.22/64/1\r\na=fmtp:102 width=1280;height=720;depth=0;framerate=30000;fieldrate=30000;\r\na=framerate:30\r\na=rtpmap:102 H264/90000\r\n";
string actualMediaDescription = md.ToString();
//Check the result of the comparsion
System.Diagnostics.Debug.Assert(string.Compare(expectedMediaDescription, actualMediaDescription) == 0, "Did not output expected result");
}
}
/// <summary>
/// Tests various attributes of the <see cref="Media.Sdp.MediaDescription"/> class.
/// </summary>
public void TestMediaDescription()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
string testVector = @"v=0
o=- 1419841619185835 1 IN IP4 192.168.1.208
s=IP Camera Video
i=videoMain
a=tool:LIVE555 Streaming Media v2014.02.10
a=type:broadcast
a=control:*
a=range:npt=0-
a=x-qt-text-nam:IP Camera Video
a=x-qt-text-inf:videoMain
t=0
r=604800 3600 0 90000
r=7d 1h 0 25h
m=video 0 RTP/AVP 96
c=IN IP4 0.0.0.0
b=AS:96
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1;profile-level-id=000000;sprop-parameter-sets=Z0IAHpWoKA9k,aM48gA==
a=control:track1
m=audio 0 RTP/AVP 0
c=IN IP4 0.0.0.0
b=AS:64
a=control:track2";
Media.Sdp.SessionDescription sessionDescription = new Media.Sdp.SessionDescription(testVector);
//Ensure 2 media descriptions were found
System.Diagnostics.Debug.Assert(sessionDescription.MediaDescriptions.Count() == 2, "Did not find all Media Descriptions '2'");
System.Diagnostics.Debug.Assert(sessionDescription.MediaDescriptions.First().MediaFormat == "96", "Did not find correct MediaFormat '96'");
System.Diagnostics.Debug.Assert(sessionDescription.MediaDescriptions.First().MediaType == Media.Sdp.MediaType.video, "Did not find correct MediaType 'video'");
System.Diagnostics.Debug.Assert(sessionDescription.MediaDescriptions.Last().MediaFormat == "0", "Did not find correct MediaFormat '0'");
System.Diagnostics.Debug.Assert(sessionDescription.MediaDescriptions.Last().MediaType == Media.Sdp.MediaType.audio, "Did not find correct MediaType 'audio;");
System.Diagnostics.Debug.Assert(false == sessionDescription.MediaDescriptions.Any(m => m.ControlLine == null), "All MediaDescriptons must have a ControlLine which is not null.");
//Check time descriptions repeat times
System.Diagnostics.Debug.Assert(sessionDescription.TimeDescriptions.Count() == 1, "Must have 1 TimeDescription");
System.Diagnostics.Debug.Assert(sessionDescription.TimeDescriptions.First().SessionStartTime == 0, "Did not parse SessionStartTime");
System.Diagnostics.Debug.Assert(sessionDescription.TimeDescriptions.First().SessionStopTime == 0, "Did not parse SessionStopTime");
System.Diagnostics.Debug.Assert(sessionDescription.TimeDescriptions.First().RepeatTimes.Count == 2, "First TimeDescription must have 2 RepeatTime entries.");
//Todo RepeatTimes should be an Object with the properties (RepeatInterval, ActiveDuration, Offsets[start / stop])
//r=<repeat interval> <active duration> <offsets from start-time>
System.Diagnostics.Debug.Assert(sessionDescription.TimeDescriptions.First().RepeatTimes[0] == "604800 3600 0 90000", "Did not parse RepeatTimes");
System.Diagnostics.Debug.Assert(sessionDescription.TimeDescriptions.First().RepeatTimes[1] == "7d 1h 0 25h", "Did not parse RepeatTimes");
System.Diagnostics.Debug.Assert(sessionDescription.Length == sessionDescription.ToString().Length, "Did not calculate length correctly");
System.Diagnostics.Debug.Assert(string.Compare(sessionDescription.ToString(), testVector) < 0, "Did not output exactly same string");
}
public static TimeDescription GetTimeDescription(this MediaDescription mediaDescription, SessionDescription sessionDescription)
{
if (Common.IDisposedExtensions.IsNullOrDisposed(mediaDescription) || Common.IDisposedExtensions.IsNullOrDisposed(sessionDescription))
{
return(null);
}
//Get index of mediaDescription
//Needs a better way to get the index of the media description
int index = sessionDescription.GetIndexFor(mediaDescription); //Array.IndexOf(sessionDescription.MediaDescriptions.ToArray(), mediaDescription);
if (index == -1)
{
return(null);
}
return(sessionDescription.GetTimeDescription(index));
}
public static TimeDescription GetTimeDescription(this MediaDescription mediaDescription, SessionDescription sessionDescription)
{
if (mediaDescription == null || sessionDescription == null)
{
return(null);
}
//Get index of mediaDescription
//Needs a better way to get the index of the media description
int index = sessionDescription.GetIndexFor(mediaDescription); //Array.IndexOf(sessionDescription.MediaDescriptions.ToArray(), mediaDescription);
if (index == -1)
{
return(null);
}
return(sessionDescription.GetTimeDescription(index));
}
//Should have a date when or should return the date playable, which would then be used by another method to compare against a time.
public static bool IsPlayable(this MediaDescription mediaDescription, SessionDescription sessionDescription) //, DateTime? check = null) ,TimeSpan within = TimeSpan.Zero
{
if (mediaDescription == null || sessionDescription == null)
{
return(false);
}
//Get index of mediaDesription
//Check TimeDescription @ index.
TimeDescription td = GetTimeDescription(mediaDescription, sessionDescription);
if (td == null)
{
return(true);
}
//Unbound start and end ?
if (td.IsPermanent)
{
return(true);
}
//Notes multiple calls to UtcNow... (avoid with a within parameter)?
try
{
//Ensure not a bounded end and that the end time is less than now
if (td.StopTime != 0
&&
td.NtpStopDateTime >= DateTime.UtcNow)
{
return(false);
}
//Ensure start time is not bounded and that the start time is greater than now
if (td.StartTime != 0
&&
td.NtpStartDateTime > DateTime.UtcNow)
{
return(false);
}
//Check repeat times.
//td.RepeatTimes;
}
catch
{
//Out of range values for conversion, assume true if end is unbounded
if (td.StopTime != 0)
{
return(false);
}
}
finally
{
td = null;
}
return(true);
}
public static bool SupportsAggregateMediaControl(this SessionDescription sdp, Uri baseUri = null)
{
Uri result;
return(SupportsAggregateMediaControl(sdp, out result, baseUri));
}
