public void Write(RtpPacket packet)
{
lock (_lock)
{
var delta = _codec != null ? (short)(packet.SequenceNumber - _lastSeqNumber) : (short)1;
if (Math.Abs(delta) >= _bufferSize)
{
ResetBuffer();
delta = 1;
}
if (_codec == null)
{
_lastSeqNumber = packet.SequenceNumber - 1;
_readSeqNumber = packet.SequenceNumber;
}
if (_codec == null || _lastPayloadType != packet.PayloadType)
{
_codec?.Dispose();
_codec = _codecFactory(packet.PayloadType);
_packetDuration = _codec.CalcSamplesNumber(packet.Payload, 0, packet.Payload.Length);
if (_samples == null || _samples.Length < _packetDuration)
{
_samples = new short[_packetDuration];
}
_bufferSize = (2 * _playBuffer + _packetDuration - 1) / _packetDuration;
if (_packets == null || _packets.Length < _bufferSize)
{
_packets = new RtpPacket[_bufferSize];
}
_lastPayloadType = packet.PayloadType;
}
_packets[(_lastSeqNumber + delta) % _bufferSize] = packet;
if (delta > 0)
{
_lastSeqNumber += delta;
}
if (_lastSeqNumber - _readSeqNumber >= _bufferSize)
{
_readSeqNumber = _lastSeqNumber - _bufferSize + 1;
}
}
}