private byte[] Format2(byte[] data)
{
short[] output = new short[data.Length * 2];
decode2.Decode(decode2State, output, data, data.Length);
float[] f = Converters.shorts2floats(output, true);
float[] s = Converters.mono2stereo(f);
byte[] o = format2upSampler.inputResample(Converters.floats2bytes(s), s.Length);
return(o);
}
private byte[] Format1(byte[] data)
{
// SPLIT INTO TWO PARTS
byte[] L = new byte[data.Length / 2];
byte[] R = new byte[data.Length / 2];
Array.Copy(data, L, L.Length);
Array.Copy(data, L.Length, R, 0, R.Length);
short[] outputL = new short[L.Length * 2];
short[] outputR = new short[R.Length * 2];
decode1L.Decode(decode1Lstate, outputL, L, L.Length);
decode1R.Decode(decode1Rstate, outputR, R, R.Length);
short[] output = Converters.MuxDualMono(outputL, outputR);
return(Converters.floats2bytes(Converters.shorts2floats(output, true)));
}
private byte[] DecodeOpus(byte[] data, int packetSize)
{
// Decoding loop
int frames = data.Length / packetSize;
int frameSize = 960; // must be same as framesize used in input, you can use OpusPacketInfo.GetNumSamples() to determine this dynamically
short[] outputBuffer;
List <float> outData = new List <float>();
for (int i = 0; i < frames; i++)
{
outputBuffer = new short[frameSize * 2];
int thisFrameSize = opus_decoder.Decode(data, i * packetSize, packetSize, outputBuffer, 0, frameSize, false);
outData.AddRange(Converters.shorts2floats(outputBuffer, true));
}
return(Converters.floats2bytes(outData.ToArray()));
}
private void MixAudio()
{
List <float> output;
List <float> pfl;
int currentSamples = 0;
int connectedClients = 0;
// MIX CLIENTS AUDIO
lock (clientsLock)
{
foreach (KeyValuePair <string, Client> kvp in clients)
{
Client c = kvp.Value;
if (c.IsConnected())
{
connectedClients++;
output = new List <float>();
for (int i = 0; i < c.currentSamples.Length / 4; i++)
{
output.Add(0f);
}
lock (c.sourcesLock)
{
foreach (int loop in c.GetSources())
{
Loop l = loops[loop];
lock (l.talkersLock)
{
foreach (string talker in l.talkers)
{
if (clients[talker].IsConnected() && (c.guid != talker || NminusOne == false))
{
output = mixSamples(output, clients[talker]);
}
}
}
}
}
c.outgoingSamples = Converters.floats2bytes(output.ToArray());
}
else
{
c.outgoingSamples = null;
}
currentSamples = c.currentSamples.Length;
}
// MIX LOOP AUDIO FOR METERING AND SERVER PFL
pfl = new List <float>();
for (int i = 0; i < currentSamples / 4; i++)
{
pfl.Add(0f);
}
foreach (Loop loop in loops)
{
output = new List <float>();
for (int i = 0; i < currentSamples / 4; i++)
{
output.Add(0f);
}
foreach (string talker in loop.talkers)
{
output = mixSamples(output, clients[talker]);
}
loop.outgoingSamples = Converters.floats2bytes(output.ToArray());
if (loop.pfl)
{
pfl = mixSamples(pfl, output);
}
}
byte[] bytes = Converters.floats2bytes(pfl.ToArray());
// If no clients are connected, ignore pfl
if (connectedClients > 0)
{
pflBuffer.AddSamples(bytes, 0, bytes.Length);
// Keep pflBuffer below 200ms
if (pflBuffer.BufferedDuration.TotalMilliseconds > 200)
{
double bytes_to_read = (sampleRate / 1000) * channels * (pflBuffer.BufferedDuration.TotalMilliseconds - 200);
byte[] void_array = new byte[(int)bytes_to_read];
pflBuffer.Read(void_array, 0, (int)bytes_to_read);
//Logger.WriteLine("Trew away " + bytes_to_read.ToString() + " bytes from pflBuffer");
}
}
}
}
