private void UnpackVoicePacket(byte[] packet, int type)
{
var vType = (SpeechCodecs)type;
var target = (SpeechTarget)(packet[0] & 0x1F);
using (var reader = new UdpPacketReader(new MemoryStream(packet, 1, packet.Length - 1)))
{
UInt32 session = (uint)reader.ReadVarInt64();
Int64 sequence = reader.ReadVarInt64();
//Null codec means the user was not found. This can happen if a user leaves while voice packets are still in flight
IVoiceCodec codec = Protocol.GetCodec(session, vType);
if (codec == null)
{
return;
}
if (vType == SpeechCodecs.Opus)
{
int size = (int)reader.ReadVarInt64();
size &= 0x1fff;
if (size == 0)
{
return;
}
byte[] data = reader.ReadBytes(size);
if (data == null)
{
return;
}
Protocol.EncodedVoice(data, session, sequence, codec, target);
}
else
{
throw new NotImplementedException("Codec is not opus");
//byte header;
//do
//{
// header = reader.ReadByte();
// int length = header & 0x7F;
// if (length > 0)
// {
// byte[] data = reader.ReadBytes(length);
// if (data == null)
// break;
// //TODO: Put *encoded* packets into a queue, then decode the head of the queue
// //TODO: This allows packets to come into late and be inserted into the correct place in the queue (if they arrive before decoding handles a later packet)
// byte[] decodedPcmData = codec.Decode(data);
// if (decodedPcmData != null)
// Protocol.Voice(decodedPcmData, session, sequence);
// }
//} while ((header & 0x80) > 0);
}
}
}
private void Voice(byte[] packet)
{
//This is all horrible!
//TODO: Move all the decoding related rubbish to within the MumbleConnection (internal void ReceivedEncryptedUdp(byte[] packet) Line 78)
//This should just receive ordered blocks of decoded PCM data
int type = packet[0] >> 5 & 0x7;
int flags = packet[0] & 0x1f;
if (type != (int)SpeechCodecs.CeltAlpha && type != (int)SpeechCodecs.CeltBeta && type != (int)SpeechCodecs.Speex)
return;
using (var reader = new UdpPacketReader(new MemoryStream(packet, 1, packet.Length - 1)))
{
Int64 session = reader.ReadVarInt64();
User user;
if (!_users.TryGetValue((uint)session, out user)) //If we don't know the user for this packet, just ignore the packet
return;
Int64 sequence = reader.ReadVarInt64();
byte header = 0;
do
{
header = reader.ReadByte();
int length = header & 127;
byte[] data = reader.ReadBytes(length);
//TODO:: We have a voice packet for this user (data)... do something with it!
} while ((header & 128) == 0);
}
}