public int Read(short[] data)
{
int samples = AvailableSamples;
Alc.CaptureSamples(deviceId, bufferPtr, samples);
Array.Copy(buffer, data, samples);
return(samples);
}
public int Read(AudioBuffer audioBuffer)
{
int samples = AvailableSamples;
Alc.CaptureSamples(deviceId, bufferPtr, samples);
audioBuffer.Load(buffer, samples, frequency, channels);
return(samples);
}
private unsafe static short[] captureSamples(IntPtr captureDevice, int frequency, int sampleCount)
{
short[] samples = new short[sampleCount];
int samplesTaken = 0;
bool isRecording = false;
double?previousRMS = null;
short[] buffer = new short[frequency];
fixed(int *samplesAvailable = new int[1])
fixed(short *bufferPointer = buffer)
{
while (samplesTaken < sampleCount)
{
IntPtr samplesAvailablePointer = new IntPtr((void *)samplesAvailable);
Alc.GetIntegerv(captureDevice, Alc.EnumCaptureSamples, 1, samplesAvailablePointer);
int samplesAvailableCount = samplesAvailable[0];
const int captureCount = 2048;
if (samplesAvailableCount > captureCount)
{
Alc.CaptureSamples(captureDevice, (void *)bufferPointer, samplesAvailableCount);
// TODO: ... do something with the buffer
double rms = calculateRMS(buffer, samplesAvailableCount);
double maxAmplitude = short.MaxValue;
double intensity = rms / maxAmplitude;
printIntensity(intensity);
// compare current rms with previous values to find beginning of a keyword
const double factor = 10;
if (rms > previousRMS * factor) // beginning of window
{
isRecording = true;
//Console.Beep(10000, 10);
}
if (isRecording)
{
for (int i = 0; i < samplesAvailableCount; i++)
{
samples[samplesTaken++] = buffer[i];
if (samplesTaken == sampleCount)
{
goto done;
}
}
}
previousRMS = rms;
}
}
}
done:
resetConsoleSettings();
return(samples.ToArray());
}
public short[] Read()
{
int samples = AvailableSamples;
Alc.CaptureSamples(deviceId, bufferPtr, samples);
short[] tmpBuffer = new short[samples];
Array.Copy(buffer, tmpBuffer, samples);
return(tmpBuffer);
}
private void FillBuffer()
{
if (overrideSound != null)
{
int totalSampleCount = 0;
while (totalSampleCount < VoipConfig.BUFFER_SIZE)
{
int sampleCount = overrideSound.FillStreamBuffer(overridePos, overrideBuf);
overridePos += sampleCount * 2;
Array.Copy(overrideBuf, 0, uncompressedBuffer, totalSampleCount, sampleCount);
totalSampleCount += sampleCount;
if (sampleCount == 0)
{
overridePos = 0;
}
}
int sleepMs = VoipConfig.BUFFER_SIZE * 800 / VoipConfig.FREQUENCY;
Thread.Sleep(sleepMs - 1);
}
else
{
int sampleCount = 0;
while (sampleCount < VoipConfig.BUFFER_SIZE)
{
Alc.GetInteger(captureDevice, Alc.EnumCaptureSamples, out sampleCount);
int alcError = Alc.GetError(captureDevice);
if (alcError != Alc.NoError)
{
throw new Exception("Failed to determine sample count: " + alcError.ToString());
}
if (sampleCount < VoipConfig.BUFFER_SIZE)
{
int sleepMs = (VoipConfig.BUFFER_SIZE - sampleCount) * 800 / VoipConfig.FREQUENCY;
if (sleepMs >= 1)
{
Thread.Sleep(sleepMs);
}
}
if (!capturing)
{
return;
}
}
Alc.CaptureSamples(captureDevice, nativeBuffer, VoipConfig.BUFFER_SIZE);
Marshal.Copy(nativeBuffer, uncompressedBuffer, 0, uncompressedBuffer.Length);
}
}
internal int PlatformGetData(byte[] buffer, int offset, int count)
{
int sampleCount = GetQueuedSampleCount();
sampleCount = Math.Min(count / 2, sampleCount); // 16bit adjust
if (sampleCount > 0)
{
GCHandle handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
Alc.CaptureSamples(_captureDevice, handle.AddrOfPinnedObject() + offset, sampleCount);
handle.Free();
CheckALCError("Failed to capture samples.");
return(sampleCount * 2); // 16bit adjust
}
return(0);
}
private void UpdateCapture()
{
Array.Copy(uncompressedBuffer, 0, prevUncompressedBuffer, 0, VoipConfig.BUFFER_SIZE);
Array.Clear(uncompressedBuffer, 0, VoipConfig.BUFFER_SIZE);
while (capturing && !Disconnected)
{
int alcError;
if (CanDetectDisconnect)
{
Alc.GetInteger(captureDevice, Alc.EnumConnected, out int isConnected);
alcError = Alc.GetError(captureDevice);
if (alcError != Alc.NoError)
{
throw new Exception("Failed to determine if capture device is connected: " + alcError.ToString());
}
if (isConnected == 0)
{
DebugConsole.ThrowError("Capture device has been disconnected. You can select another available device in the settings.");
Disconnected = true;
break;
}
}
Alc.GetInteger(captureDevice, Alc.EnumCaptureSamples, out int sampleCount);
alcError = Alc.GetError(captureDevice);
if (alcError != Alc.NoError)
{
throw new Exception("Failed to determine sample count: " + alcError.ToString());
}
if (sampleCount < VoipConfig.BUFFER_SIZE)
{
int sleepMs = (VoipConfig.BUFFER_SIZE - sampleCount) * 800 / VoipConfig.FREQUENCY;
if (sleepMs < 5)
{
sleepMs = 5;
}
Thread.Sleep(sleepMs);
continue;
}
GCHandle handle = GCHandle.Alloc(uncompressedBuffer, GCHandleType.Pinned);
try
{
Alc.CaptureSamples(captureDevice, handle.AddrOfPinnedObject(), VoipConfig.BUFFER_SIZE);
}
finally
{
handle.Free();
}
alcError = Alc.GetError(captureDevice);
if (alcError != Alc.NoError)
{
throw new Exception("Failed to capture samples: " + alcError.ToString());
}
double maxAmplitude = 0.0f;
for (int i = 0; i < VoipConfig.BUFFER_SIZE; i++)
{
uncompressedBuffer[i] = (short)MathHelper.Clamp((uncompressedBuffer[i] * Gain), -short.MaxValue, short.MaxValue);
double sampleVal = uncompressedBuffer[i] / (double)short.MaxValue;
maxAmplitude = Math.Max(maxAmplitude, Math.Abs(sampleVal));
}
double dB = Math.Min(20 * Math.Log10(maxAmplitude), 0.0);
LastdB = dB;
LastAmplitude = maxAmplitude;
bool allowEnqueue = false;
if (GameMain.WindowActive)
{
ForceLocal = captureTimer > 0 ? ForceLocal : false;
bool pttDown = false;
if ((PlayerInput.KeyDown(InputType.Voice) || PlayerInput.KeyDown(InputType.LocalVoice)) &&
GUI.KeyboardDispatcher.Subscriber == null)
{
pttDown = true;
if (PlayerInput.KeyDown(InputType.LocalVoice))
{
ForceLocal = true;
}
else
{
ForceLocal = false;
}
}
if (GameMain.Config.VoiceSetting == GameSettings.VoiceMode.Activity)
{
if (dB > GameMain.Config.NoiseGateThreshold)
{
allowEnqueue = true;
}
}
else if (GameMain.Config.VoiceSetting == GameSettings.VoiceMode.PushToTalk)
{
if (pttDown)
{
allowEnqueue = true;
}
}
}
if (allowEnqueue || captureTimer > 0)
{
LastEnqueueAudio = DateTime.Now;
if (GameMain.Client?.Character != null)
{
var messageType = !ForceLocal && ChatMessage.CanUseRadio(GameMain.Client.Character, out _) ? ChatMessageType.Radio : ChatMessageType.Default;
GameMain.Client.Character.ShowSpeechBubble(1.25f, ChatMessage.MessageColor[(int)messageType]);
}
//encode audio and enqueue it
lock (buffers)
{
if (!prevCaptured) //enqueue the previous buffer if not sent to avoid cutoff
{
int compressedCountPrev = VoipConfig.Encoder.Encode(prevUncompressedBuffer, 0, VoipConfig.BUFFER_SIZE, BufferToQueue, 0, VoipConfig.MAX_COMPRESSED_SIZE);
EnqueueBuffer(compressedCountPrev);
}
int compressedCount = VoipConfig.Encoder.Encode(uncompressedBuffer, 0, VoipConfig.BUFFER_SIZE, BufferToQueue, 0, VoipConfig.MAX_COMPRESSED_SIZE);
EnqueueBuffer(compressedCount);
}
captureTimer -= (VoipConfig.BUFFER_SIZE * 1000) / VoipConfig.FREQUENCY;
if (allowEnqueue)
{
captureTimer = GameMain.Config.VoiceChatCutoffPrevention;
}
prevCaptured = true;
}
else
{
captureTimer = 0;
prevCaptured = false;
//enqueue silence
lock (buffers)
{
EnqueueBuffer(0);
}
}
Thread.Sleep(10);
}
}
/// <summary>Fills the specified buffer with samples from the internal capture ring-buffer. This method does not block: it is an error to specify a sampleCount larger than AvailableSamples.</summary>
/// <param name="buffer">A pointer to a previously initialized and pinned array.</param>
/// <param name="sampleCount">The number of samples to be written to the buffer.</param>
public void ReadSamples(IntPtr buffer, int sampleCount)
{
Alc.CaptureSamples(Handle, buffer, sampleCount);
}
void UpdateCapture()
{
short[] uncompressedBuffer = new short[VoipConfig.BUFFER_SIZE];
while (capturing)
{
int alcError;
Alc.GetInteger(captureDevice, Alc.EnumCaptureSamples, out int sampleCount);
alcError = Alc.GetError(captureDevice);
if (alcError != Alc.NoError)
{
throw new Exception("Failed to determine sample count: " + alcError.ToString());
}
if (sampleCount < VoipConfig.BUFFER_SIZE)
{
int sleepMs = (VoipConfig.BUFFER_SIZE - sampleCount) * 800 / VoipConfig.FREQUENCY;
if (sleepMs < 5)
{
sleepMs = 5;
}
Thread.Sleep(sleepMs);
continue;
}
GCHandle handle = GCHandle.Alloc(uncompressedBuffer, GCHandleType.Pinned);
try
{
Alc.CaptureSamples(captureDevice, handle.AddrOfPinnedObject(), VoipConfig.BUFFER_SIZE);
}
finally
{
handle.Free();
}
alcError = Alc.GetError(captureDevice);
if (alcError != Alc.NoError)
{
throw new Exception("Failed to capture samples: " + alcError.ToString());
}
double maxAmplitude = 0.0f;
for (int i = 0; i < VoipConfig.BUFFER_SIZE; i++)
{
uncompressedBuffer[i] = (short)MathHelper.Clamp((uncompressedBuffer[i] * Gain), -short.MaxValue, short.MaxValue);
double sampleVal = uncompressedBuffer[i] / (double)short.MaxValue;
maxAmplitude = Math.Max(maxAmplitude, Math.Abs(sampleVal));
}
double dB = Math.Min(20 * Math.Log10(maxAmplitude), 0.0);
LastdB = dB;
bool allowEnqueue = false;
if (GameMain.WindowActive)
{
if (GameMain.Config.VoiceSetting == GameSettings.VoiceMode.Activity)
{
if (dB > GameMain.Config.NoiseGateThreshold)
{
allowEnqueue = true;
}
}
else if (GameMain.Config.VoiceSetting == GameSettings.VoiceMode.PushToTalk)
{
if (PlayerInput.KeyDown(InputType.Voice) && GUI.KeyboardDispatcher.Subscriber == null)
{
allowEnqueue = true;
}
}
}
if (allowEnqueue)
{
LastEnqueueAudio = DateTime.Now;
//encode audio and enqueue it
lock (buffers)
{
int compressedCount = VoipConfig.Encoder.Encode(uncompressedBuffer, 0, VoipConfig.BUFFER_SIZE, BufferToQueue, 0, VoipConfig.MAX_COMPRESSED_SIZE);
EnqueueBuffer(compressedCount);
}
}
else
{
//enqueue silence
lock (buffers)
{
EnqueueBuffer(0);
}
}
Thread.Sleep(10);
}
}
public void Read <T>(ref T data, int sampleCount) where T : struct
{
Alc.CaptureSamples(handle, ref data, sampleCount);
}
