NVorbis.Ogg.Packet.MergeWith C# (CSharp) Method

        internal void MergeWith(NVorbis.DataPacket continuation)
        {
            var op = continuation as Packet;

            if (op == null) throw new ArgumentException("Incorrect packet type!");

            Length += continuation.Length;

            if (_mergedPacket == null)
            {
                _mergedPacket = op;
            }
            else
            {
                _mergedPacket.MergeWith(continuation);
            }

            // per the spec, a partial packet goes with the next page's granulepos.  we'll go ahead and assign it to the next page as well
            PageGranulePosition = continuation.PageGranulePosition;
            PageSequenceNumber = continuation.PageSequenceNumber;
        }

 internal void AddPacket(Packet packet)
 {
     lock (_packetLock)
     {
         if (!_eosFound)
         {
             if (packet.IsResync)
             {
                 packet.IsContinuation = false;
                 if (_last != null)
                 {
                     _last.IsContinued = false;
                 }
             }
             if (packet.IsContinuation)
             {
                 if (_last == null)
                 {
                     throw new InvalidDataException();
                 }
                 if (!_last.IsContinued)
                 {
                     throw new InvalidDataException();
                 }
                 _last.MergeWith(packet);
                 _last.IsContinued = packet.IsContinued;
             }
             else
             {
                 if (packet == null)
                 {
                     throw new ArgumentException("Wrong packet datatype", "packet");
                 }
                 if (_first == null)
                 {
                     _first = packet;
                     _last  = packet;
                 }
                 else
                 {
                     Packet packet2 = packet.Prev = _last;
                     Packet packet4 = _last = (packet2.Next = packet);
                 }
             }
             if (packet.IsEndOfStream)
             {
                 SetEndOfStream();
             }
         }
     }
 }