public void OnPacketReceived(RtpPayload payload, int time)
{
var allBytes = payload.Data
.Select(AlawEncoder.Alaw2Linear)
.Select(BitConverter.GetBytes)
.SelectMany(a => a.ToArray())
.ToArray();
this.playbackDevice.PlaySample(allBytes);
}
private void TryConvert(RtpPayload payload, Action <RtpPayload> next)
{
// TODO: get from configuration
if (payload.PayloadType != 8)
{
next(payload);
return;
}
var data = payload.Data.AsPairs().Select(a => new[] { a[0], a[1] }).Select(a => AlawEncoder.LinearToAlaw(a.AsShort())).ToArray();
next(new RtpPayload(data, payload.SequenceNumber, payload.Identifier, payload.Timestamp, payload.IsFirst, payload.PayloadType));
}
public RtpPayload GetData(long timestamp)
{
Interlocked.Increment(ref this.packetsSent);
var endOfEvent = Interlocked.Read(ref this.numberOfPackets) == 1;
// volume = 10 = 0x0a or 0x8a
var data =
new[] { (byte)this.digit, (byte)(endOfEvent ? 0x8a : 0x0a) }.Concat(
BitConverter.GetBytes((short)(this.packetsSent * 160)).Reverse()).ToArray();
var payload = new RtpPayload(data, this.sequenceNumber, this.identifier, timestamp, false, 0x65);
Interlocked.Add(ref this.numberOfPackets, -1);
return(payload);
}