private void SendAudioData(OpusEncoder encoder, ref byte[] audio, int offset, ushort seq, uint timestamp)
{
byte[] packet = new byte[OpusEncoder.FrameBytes + 12];
byte[] header = new byte[12];
header[0] = 0x80;
header[1] = 0x78;
header[2] = (byte)(seq >> 8);
header[3] = (byte)(seq >> 0);
header[4] = (byte)(timestamp >> 24);
header[5] = (byte)(timestamp >> 16);
header[6] = (byte)(timestamp >> 8);
header[7] = (byte)(timestamp >> 0);
header[8] = (byte)(_ssrc >> 24);
header[9] = (byte)(_ssrc >> 16);
header[10] = (byte)(_ssrc >> 8);
header[11] = (byte)(_ssrc >> 0);
Buffer.BlockCopy(header, 0, packet, 0, 12);
int frameSize = encoder.EncodeFrame(audio, offset, packet, 12);
int encSize = Sodium.Encrypt(packet, 12, frameSize, packet, 12, header, _secretKey);
_udpClient.Send(packet, encSize + 12);
}
/// <summary>
/// Sends audio data to the voice channel
/// </summary>
/// <param name="buffer">Audio data</param>
/// <param name="offset">Offset to start from</param>
/// <returns>The new offset, which u can use in your next Write call</returns>
public int Write(byte[] buffer, int offset)
{
if (_session.State != DiscordVoiceClientState.Connected)
{
throw new InvalidOperationException("Connection has been closed.");
}
lock (_session.VoiceLock)
{
if (_nextTick == -1)
{
_nextTick = Environment.TickCount;
}
else
{
long distance = _nextTick - Environment.TickCount;
if (distance > 0)
{
Thread.Sleep((int)distance);
}
}
byte[] packet = new byte[OpusEncoder.FrameBytes + 12];
byte[] header = new byte[12];
header[0] = 0x80;
header[1] = 0x78;
header[2] = (byte)(_session.Sequence >> 8);
header[3] = (byte)(_session.Sequence >> 0);
header[4] = (byte)(_session.Timestamp >> 24);
header[5] = (byte)(_session.Timestamp >> 16);
header[6] = (byte)(_session.Timestamp >> 8);
header[7] = (byte)(_session.Timestamp >> 0);
header[8] = (byte)(_session.SSRC >> 24);
header[9] = (byte)(_session.SSRC >> 16);
header[10] = (byte)(_session.SSRC >> 8);
header[11] = (byte)(_session.SSRC >> 0);
Buffer.BlockCopy(header, 0, packet, 0, 12);
int frameSize = _encoder.EncodeFrame(buffer, offset, packet, 12);
int encSize = Sodium.Encrypt(packet, 12, frameSize, packet, 12, header, _session.SecretKey);
_session.SetSpeaking(true);
_session.UdpClient.Send(packet, encSize + 12);
_nextTick += OpusEncoder.TimeBetweenFrames;
_session.Sequence++;
_session.Timestamp += OpusEncoder.FrameSamplesPerChannel;
return(offset + OpusEncoder.FrameBytes);
}
}