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);
}
public bool Speak(byte[] audio, uint bitrate, AudioApplication usedFor = AudioApplication.Mixed)
{
while (Speaking)
{
Thread.Sleep(1);
}
Speaking = true;
var encoder = new OpusEncoder((int)bitrate, usedFor, 0);
int offset = 0;
long nextTick = Environment.TickCount;
try
{
while (offset + OpusEncoder.FrameBytes < audio.Length && !_stopCurrent)
{
SetSpeaking(true);
long dist = nextTick - Environment.TickCount;
if (dist <= 0)
{
SendAudioData(encoder, ref audio, offset, _sequence, _timestamp);
nextTick += OpusEncoder.TimeBetweenFrames;
offset += OpusEncoder.FrameBytes;
_sequence++;
_timestamp += OpusEncoder.FrameSamplesPerChannel;
}
else
{
Thread.Sleep((int)dist);
}
}
SetSpeaking(false);
_stopCurrent = false;
Speaking = false;
return(true);
}
catch
{
Speaking = false;
return(false);
}
}
internal DiscordVoiceStream(DiscordVoiceSession client, int bitrate, AudioApplication application = AudioApplication.Mixed)
{
_session = client;
_encoder = new OpusEncoder(bitrate, application, 0);
_nextTick = -1;
}