public byte[] Encode(SpeechCodecs codec)
{
//Get the codec
var codecInstance = _codecs.GetCodec(codec);
//How many bytes can we fit into the larget frame?
var maxBytes = codecInstance.PermittedEncodingFrameSizes.Max() * sizeof(ushort);
bool stopped = false;
//If we have an unencoded item stored here it's because a previous iteration pulled from the queue and discovered it could not process this packet (different target)
if (_unencodedItem.HasValue && TryAddToEncodingBuffer(_unencodedItem.Value, out stopped))
{
_unencodedItem = null;
}
//Accumulate as many bytes as we can stuff into a single frame
while (_pcmBuffer.Count < maxBytes && !stopped)
{
TargettedSpeech item;
if (!_unencodedBuffer.TryTake(out item, TimeSpan.FromMilliseconds(1)))
{
break;
}
//Add this packet to the encoding buffer, or stop accumulating bytes
if (!TryAddToEncodingBuffer(item, out stopped))
{
_unencodedItem = item;
break;
}
}
//Nothing to encode, early exit
if (_pcmBuffer.Count == 0)
{
return(null);
}
if (stopped)
{
//User has stopped talking, pad buffer up to next buffer size with silence
var frameBytes = codecInstance.PermittedEncodingFrameSizes.Select(f => f * sizeof(ushort)).Where(f => f >= _pcmBuffer.Count).Min();
byte[] b = new byte[frameBytes];
int read = _pcmBuffer.Read(new ArraySegment <byte>(b));
return(codecInstance.Encode(new ArraySegment <byte>(b, 0, read)));
}
else
{
//We have a load of bytes of PCM data, let's encode them
var frameBytes = codecInstance.PermittedEncodingFrameSizes.Select(f => f * sizeof(ushort)).Where(f => f <= _pcmBuffer.Count).Max();
byte[] b = new byte[frameBytes];
int read = _pcmBuffer.Read(new ArraySegment <byte>(b));
return(codecInstance.Encode(new ArraySegment <byte>(b, 0, read)));
}
}
protected internal IVoiceCodec GetCodec(SpeechCodecs codec)
{
if (!_owner.Connection.VoiceSupportEnabled)
{
throw new InvalidOperationException("Voice Support is disabled with this connection");
}
return(_codecs.GetCodec(codec));
}
/// <summary>
/// Get a voice decoder for the specified user/codec combination
/// </summary>
/// <param name="session"></param>
/// <param name="codec"></param>
/// <returns></returns>
public virtual IVoiceCodec GetCodec(uint session, SpeechCodecs codec)
{
User user;
if (!UserDictionary.TryGetValue(session, out user))
{
return(null);
}
return(user.GetCodec(codec));
}
public byte[] Encode(SpeechCodecs codec)
{
//Get the codec
var codecInstance = _codecs.GetCodec(codec);
//How many bytes can we fit into the larget frame?
var maxBytes = codecInstance.PermittedEncodingFrameSizes.Max() * sizeof(ushort);
bool stopped = false;
//If we have an unencoded item stored here it's because a previous iteration pulled from the queue and discovered it could not process this packet (different target)
if (_unencodedItem.HasValue && TryAddToEncodingBuffer(_unencodedItem.Value, out stopped))
_unencodedItem = null;
//Accumulate as many bytes as we can stuff into a single frame
while (_pcmBuffer.Count < maxBytes && !stopped)
{
TargettedSpeech item;
if (!_unencodedBuffer.TryTake(out item, TimeSpan.FromMilliseconds(1)))
break;
//Add this packet to the encoding buffer, or stop accumulating bytes
if (!TryAddToEncodingBuffer(item, out stopped))
{
_unencodedItem = item;
break;
}
}
//Nothing to encode, early exit
if (_pcmBuffer.Count == 0)
return null;
if (stopped)
{
//User has stopped talking, pad buffer up to next buffer size with silence
var frameBytes = codecInstance.PermittedEncodingFrameSizes.Select(f => f * sizeof(ushort)).Where(f => f >= _pcmBuffer.Count).Min();
byte[] b = new byte[frameBytes];
int read = _pcmBuffer.Read(new ArraySegment<byte>(b));
return codecInstance.Encode(new ArraySegment<byte>(b, 0, read));
}
else
{
//We have a load of bytes of PCM data, let's encode them
var frameBytes = codecInstance.PermittedEncodingFrameSizes.Select(f => f * sizeof(ushort)).Where(f => f <= _pcmBuffer.Count).Max();
byte[] b = new byte[frameBytes];
int read = _pcmBuffer.Read(new ArraySegment<byte>(b));
return codecInstance.Encode(new ArraySegment<byte>(b, 0, read));
}
}
protected internal IVoiceCodec GetCodec(SpeechCodecs codec)
{
switch (codec)
{
case SpeechCodecs.CeltAlpha:
return _alpha.Value;
case SpeechCodecs.Speex:
return _speex.Value;
case SpeechCodecs.CeltBeta:
return _beta.Value;
case SpeechCodecs.Opus:
return _opus.Value;
default:
throw new ArgumentOutOfRangeException("codec");
}
}
protected internal IVoiceCodec GetCodec(SpeechCodecs codec)
{
switch (codec)
{
case SpeechCodecs.CeltAlpha:
return(_alpha.Value);
case SpeechCodecs.Speex:
return(_speex.Value);
case SpeechCodecs.CeltBeta:
return(_beta.Value);
case SpeechCodecs.Opus:
return(_opus.Value);
default:
throw new ArgumentOutOfRangeException("codec");
}
}
/// <summary>
/// Get a voice decoder for the specified user/codec combination
/// </summary>
/// <param name="session"></param>
/// <param name="codec"></param>
/// <returns></returns>
public virtual IVoiceCodec GetCodec(uint session, SpeechCodecs codec)
{
User user;
if (!UserDictionary.TryGetValue(session, out user))
return null;
return user.GetCodec(codec);
}
protected internal IVoiceCodec GetCodec(SpeechCodecs codec)
{
return(_codecs.GetCodec(codec));
}
