public void TestHeaderExtension()
{
var buffer = new ByteBuffer(_packetBytes, 0, _packetBytes.Length);
var packet = RtpPacket.Decode(buffer);
var date = new DateTime(2017, 10, 17, 4, 33, 17, 32, DateTimeKind.Local);
var headerBuf = new OnvifRtpHeader()
{
Time = date,
CbitSet = true,
DbitSet = true,
EbitSet = true,
CSeq = 3
}.Encode();
packet.HasExtensionHeader = true;
packet.ExtensionHeaderData = OnvifRtpHeader.PROFILE_ID;
packet.ExtensionData = headerBuf;
var encoded = packet.Encode();
var toTest = RtpPacket.Decode(encoded);
Assert.True(toTest.Version.Is(RtpVersion.V2));
Assert.True(toTest.HasExtensionHeader);
Assert.False(toTest.Marker);
Assert.True(toTest.CsrcIds.IsEmpty);
Assert.Equal(97, toTest.PayloadType);
Assert.Equal(40179, toTest.SequenceNumber);
Assert.Equal(3616193167, toTest.Timestamp);
Assert.Equal((uint)1849968209, toTest.SSRC);
Assert.Equal(51, toTest.Payload.Length);
Assert.Equal(OnvifRtpHeader.PROFILE_ID, packet.ExtensionHeaderData);
var header = OnvifRtpHeader.Decode(toTest.ExtensionData);
Assert.Equal(date, header.Time.ToLocalTime());
Assert.True(header.CbitSet);
Assert.True(header.DbitSet);
Assert.True(header.EbitSet);
Assert.Equal(3, header.CSeq);
}
public void TestOnlyEbitSet()
{
var date = new DateTime(2017, 10, 17, 4, 33, 17, 32, DateTimeKind.Local);
var buffer = new OnvifRtpHeader()
{
Time = date,
CbitSet = false,
DbitSet = false,
EbitSet = true,
CSeq = 3
}.Encode();
var header = OnvifRtpHeader.Decode(buffer);
Assert.Equal(date, header.Time.ToLocalTime());
Assert.False(header.CbitSet);
Assert.False(header.DbitSet);
Assert.True(header.EbitSet);
Assert.Equal(3, header.CSeq);
}
/// <summary>
/// Converts an RTP packet into an the RTP payload. Basically it just strips off
/// the RTP transport info and returns that actual payload data.
/// </summary>
/// <param name="buffer"></param>
/// <returns></returns>
public override bool WriteBuffer(ByteBuffer buffer)
{
try
{
var packet = RtpPacket.Decode(buffer);
var paylaod = packet.Payload;
if (packet.HasExtensionHeader && packet.ExtensionHeaderData == OnvifRtpHeader.PROFILE_ID)
{
// Packet contains Onvif header extension set packet time reference.
var onvifHdr = OnvifRtpHeader.Decode(packet.ExtensionData);
paylaod.TimeReference = onvifHdr.Time;
}
return(PushBuffer(paylaod));
}
catch (Exception e)
{
LOG.Error($"Unable to decode RTP packet, reason: {e.Message}");
return(false);
}
}
