private void OnDatagramReceived(object sender, UdpDatagramReceivedEventArgs <byte[]> e)
{
try
{
UdpPacket udpPacket = UdpPacket.FromArray(e.Datagram);
if (udpPacket.Total == 1)
{
RtpPacket packet = new RtpPacket(udpPacket.Payload, udpPacket.PayloadSize);
Bitmap bitmap = packet.ToBitmap();
RaiseNewFrameEvent(bitmap, Epoch.GetDateTimeByYesterdayTotalMilliseconds(packet.Timestamp));
}
else
{
// rearrage packets to one packet
if (packetCache.ContainsKey(udpPacket.Sequence))
{
List <UdpPacket> udpPackets = null;
if (packetCache.TryGetValue(udpPacket.Sequence, out udpPackets))
{
udpPackets.Add(udpPacket);
if (udpPackets.Count == udpPacket.Total)
{
packetCache.TryRemove(udpPacket.Sequence, out udpPackets);
udpPackets = udpPackets.OrderBy(u => u.Order).ToList();
int rtpPacketLength = udpPackets.Sum(u => u.PayloadSize);
int maxPacketLength = udpPackets.Select(u => u.PayloadSize).Max();
byte[] rtpPacket = new byte[rtpPacketLength];
foreach (var item in udpPackets)
{
Buffer.BlockCopy(item.Payload, 0, rtpPacket, (item.Order - 1) * maxPacketLength, item.PayloadSize);
}
RtpPacket packet = new RtpPacket(rtpPacket, rtpPacket.Length);
Bitmap bitmap = packet.ToBitmap();
RaiseNewFrameEvent(bitmap, Epoch.GetDateTimeByYesterdayTotalMilliseconds(packet.Timestamp));
packetCache.Clear();
}
}
}
else
{
List <UdpPacket> udpPackets = new List <UdpPacket>();
udpPackets.Add(udpPacket);
packetCache.AddOrUpdate(udpPacket.Sequence, udpPackets, (k, v) => { return(udpPackets); });
}
}
}
catch (Exception ex)
{
RaiseVideoSourceExceptionEvent(ex.Message);
}
}
private void OnDatagramReceived(object sender, UdpDatagramReceivedEventArgs<byte[]> e)
{
try
{
UdpPacket udpPacket = UdpPacket.FromArray(e.Datagram);
if (udpPacket.Total == 1)
{
RtpPacket packet = new RtpPacket(udpPacket.Payload, udpPacket.PayloadSize);
Bitmap bitmap = packet.ToBitmap();
RaiseNewFrameEvent(bitmap, Epoch.GetDateTimeByYesterdayTotalMilliseconds(packet.Timestamp));
}
else
{
// rearrage packets to one packet
if (packetCache.ContainsKey(udpPacket.Sequence))
{
List<UdpPacket> udpPackets = null;
if (packetCache.TryGetValue(udpPacket.Sequence, out udpPackets))
{
udpPackets.Add(udpPacket);
if (udpPackets.Count == udpPacket.Total)
{
packetCache.TryRemove(udpPacket.Sequence, out udpPackets);
udpPackets = udpPackets.OrderBy(u => u.Order).ToList();
int rtpPacketLength = udpPackets.Sum(u => u.PayloadSize);
int maxPacketLength = udpPackets.Select(u => u.PayloadSize).Max();
byte[] rtpPacket = new byte[rtpPacketLength];
foreach (var item in udpPackets)
{
Buffer.BlockCopy(item.Payload, 0, rtpPacket, (item.Order - 1) * maxPacketLength, item.PayloadSize);
}
RtpPacket packet = new RtpPacket(rtpPacket, rtpPacket.Length);
Bitmap bitmap = packet.ToBitmap();
RaiseNewFrameEvent(bitmap, Epoch.GetDateTimeByYesterdayTotalMilliseconds(packet.Timestamp));
packetCache.Clear();
}
}
}
else
{
List<UdpPacket> udpPackets = new List<UdpPacket>();
udpPackets.Add(udpPacket);
packetCache.AddOrUpdate(udpPacket.Sequence, udpPackets, (k, v) => { return udpPackets; });
}
}
}
catch (Exception ex)
{
RaiseVideoSourceExceptionEvent(ex.Message);
}
}
