unsafe public void ProcessFrame(ProcessAudioFrameContext context)
{
AudioFrame frame = context.InputFrame;
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.ReadWrite))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
((IMemoryBufferByteAccess)reference).GetBuffer(out byte *dataInBytes, out uint capacity);
float *dataInFloat = (float *)dataInBytes;
int dataInFloatLength = (int)buffer.Length / sizeof(float);
// read parameters once
float currentWet = this.Mix;
float currentDry = 1.0f - currentWet;
float currentFeedback = this.Feedback;
// Process audio data
float sample, echoSample, outSample;
for (int i = 0; i < dataInFloatLength; i++)
{
// read values
sample = dataInFloat[i];
echoSample = _echoBuffer.Dequeue();
// compute output sample
outSample = (currentDry * sample) + (currentWet * echoSample);
dataInFloat[i] = outSample;
// compute delay sample
echoSample = sample + (currentFeedback * echoSample);
_echoBuffer.Enqueue(echoSample);
}
}
}
private unsafe AudioFrame ReadAudioData(uint samples)
{
// Buffer size is (number of samples) * (size of each sample)
uint bufferSize = samples * sizeof(byte) * 2;
AudioFrame frame = new Windows.Media.AudioFrame(bufferSize);
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
byte *dataInBytes;
uint capacityInBytes;
// Get the buffer from the AudioFrame
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacityInBytes);
// Read audio data from the stream and copy it to the AudioFrame buffer
var readBytes = new byte[capacityInBytes];
uint bytesRead = audioStream.Read(readBytes);
if (bytesRead == 0)
{
frameInputNode.Stop();
}
for (int i = 0; i < bytesRead; i++)
{
dataInBytes[i] = readBytes[i];
}
}
return(frame);
}
public void ProcessFrame(ProcessAudioFrameContext context)
{
unsafe
{
AudioFrame inputFrame = context.InputFrame;
using (AudioBuffer inputBuffer = inputFrame.LockBuffer(AudioBufferAccessMode.ReadWrite))
using (IMemoryBufferReference inputReference = inputBuffer.CreateReference())
{
((IMemoryBufferByteAccess)inputReference).GetBuffer(out byte *inputDataInBytes, out uint inputCapacity);
float *inputDataInFloat = (float *)inputDataInBytes;
int dataInFloatLength = (int)inputBuffer.Length / sizeof(float);
// Process audio data
for (int n = 0; n < dataInFloatLength; n++)
{
int ch = n % channels;
// cascaded filter to perform eq
for (int band = 0; band < bandCount; band++)
{
inputDataInFloat[n] = filters[ch, band].Transform(inputDataInFloat[n]);
}
}
}
}
}
/// <summary>
/// When audioFrameUpdateMinimum is reached by audioFrameUpdateCount, this method gets the current audio frame, obtains the data from it
/// and calculates the raw audio level from -100 to 0.
/// </summary>
private static unsafe void Graph_QuantumStarted(AudioGraph sender, object args)
{
audioFrameUpdateCount++;
if (audioFrameUpdateCount >= audioFrameUpdateMinimum)
{
AudioFrame audioFrame = frameOutputNode.GetFrame();
float[] floatData;
using (AudioBuffer audioBuffer = audioFrame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = audioBuffer.CreateReference())
{
((IMemoryBufferByteAccess)reference).GetBuffer(out byte *dataInBytes, out uint capacity);
float *unsafeFloatData = (float *)dataInBytes;
floatData = new float[capacity / sizeof(float)];
for (int i = 0; i < capacity / sizeof(float); i++)
{
floatData[i] = unsafeFloatData[i];
}
}
double soundLevel = 0f;
foreach (float sample in floatData)
{
soundLevel += Math.Abs(sample);
}
soundLevel = Math.Log10(soundLevel / floatData.Length) * 20;
NewRawSoundLevel(soundLevel);
audioFrameUpdateCount = 0;
}
}
unsafe private void ProcessAudioFrame(AudioMediaFrame audioMediaFrame)
{
using (AudioFrame audioFrame = audioMediaFrame.GetAudioFrame())
using (AudioBuffer buffer = audioFrame.LockBuffer(AudioBufferAccessMode.Read))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
byte * dataInBytes;
uint capacityInBytes;
float *dataInFloat;
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacityInBytes);
// The requested format was float
dataInFloat = (float *)dataInBytes;
// Get the number of samples by multiplying the duration by sampling rate:
// duration [s] x sampling rate [samples/s] = # samples
// Duration can be gotten off the frame reference OR the audioFrame
TimeSpan duration = audioMediaFrame.FrameReference.Duration;
// frameDurMs is in milliseconds, while SampleRate is given per second.
uint frameDurMs = (uint)duration.TotalMilliseconds;
uint sampleRate = audioMediaFrame.AudioEncodingProperties.SampleRate;
uint sampleCount = (frameDurMs * sampleRate) / 1000;
}
}
/// <summary>
/// Generates empty data for a neccessary quantity of samples
/// </summary>
/// <param name="samples">Sampel count</param>
/// <returns>AudioFrame of sample count</returns>
public static unsafe AudioFrame GenerateAudioData(uint samples)
{
// Buffer size is (number of samples) * (size of each sample) * (number of channels)
uint bufferSize = samples * sizeof(float) * 2;
AudioFrame frame = new AudioFrame(bufferSize);
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
// Get the buffer from the AudioFrame
((IMemoryBufferByteAccess)reference).GetBuffer(out byte *dataInBytes, out uint _);
// Cast to float since the data we are generating is float
float *dataInFloat = (float *)dataInBytes;
float freq = 17000; // choosing to generate frequency of 17kHz
float amplitude = 0.3f;
int sampleRate = (int)outgraph.EncodingProperties.SampleRate;
double sampleIncrement = (freq * (Math.PI * 2)) / sampleRate;
// Generate a 17kHz sine wave and populate the values in the memory buffer
for (int i = 0; i < samples; i++)
{
double sinValue = amplitude * Math.Sin(theta);
dataInFloat[i] = (float)sinValue;
theta += sampleIncrement;
}
}
return(frame);
}
//unsafe private void M_AudioGraph_QuantumProcessed(AudioGraph sender, object args)
//{
//}
unsafe private void M_AudioGraph_QuantumStarted(AudioGraph sender, object args)
{
// draw every n frames
//if (fctr++ % 5 == 0)
//{
using (AudioFrame audioFrame = this.m_AudioFrameOutputNode.GetFrame())
using (AudioBuffer audioBuffer = audioFrame.LockBuffer(AudioBufferAccessMode.Read))
using (IMemoryBufferReference memBufferRef = audioBuffer.CreateReference())
{
IMemoryBufferByteAccess byteAccess = memBufferRef as IMemoryBufferByteAccess;
byte *byteBuffer;
uint capacity;
byteAccess.GetBuffer(out byteBuffer, out capacity);
float *floatBuffer = (float *)byteBuffer;
for (int i = 0; i < this.m_AudioGraph.SamplesPerQuantum * this.m_AudioGraph.EncodingProperties.ChannelCount; i++)
{
this.m_QuantumSamples[i] = floatBuffer[i];
}
this.m_Capacity = capacity;
this.m_abCap = audioBuffer.Capacity;
this.m_abLen = audioBuffer.Length;
}
AudioCanvas.Invalidate();
//}
}
private unsafe AudioFrame GenerateAudioData(uint samples)
{
var bufferSize = samples * sizeof(float) * 2;
var frame = new AudioFrame(bufferSize);
_buffer = _buffer?.Length != samples * 2 ? new short[samples * 2] : _buffer;
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
float *dataInFloat;
byte * dataInBytes;
uint capacityInBytes;
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacityInBytes);
dataInFloat = (float *)dataInBytes;
_player.GetBuffer(_buffer);
for (var i = 0; i < _buffer.Length; i++)
{
dataInFloat[i] = _buffer[i] * 0.00003f; // 乗算のほうが早いらしい
}
//foreach (float f in _buffer.Select(a => a * 0.00003f))
// *dataInFloat++ = f;
}
return(frame);
}
unsafe internal AudioFrame GenerateAudioData(uint samples)
{
// Buffer size is (number of samples) * (size of each sample)
// We choose to generate single channel (mono) audio. For multi-channel, multiply by number of channels
uint bufferSize = samples * sizeof(float);
AudioFrame frame = new Windows.Media.AudioFrame(bufferSize);
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
byte * dataInBytes;
uint capacityInBytes;
float *dataInFloat;
// Get the buffer from the AudioFrame
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacityInBytes);
// Cast to float since the data we are generating is float
dataInFloat = (float *)dataInBytes;
float amplitude = 0.3f;
int sampleRate = (int)parentGraph.EncodingProperties.SampleRate;
double sampleIncrement = (frequency * (Math.PI * 2)) / sampleRate;
// Generate a sine wave and populate the values in the memory buffer
for (int i = 0; i < samples; i++)
{
double sinValue = amplitude * Math.Sin(angle);
dataInFloat[i] = (float)sinValue;
angle += sampleIncrement;
}
}
return(frame);
}
unsafe public void ProcessFrame(ProcessAudioFrameContext context)
{
AudioFrame inputFrame = context.InputFrame;
using (AudioBuffer inputBuffer = inputFrame.LockBuffer(AudioBufferAccessMode.Read))
using (IMemoryBufferReference inputReference = inputBuffer.CreateReference())
{
byte *inputDataInBytes;
uint inputCapacity;
((IMemoryBufferByteAccess)inputReference).GetBuffer(out inputDataInBytes, out inputCapacity);
float *inputDataInFloat = (float *)inputDataInBytes;
float inputDataL;
float inputDataR;
// Process audio data
int dataInFloatLength = (int)inputBuffer.Length / sizeof(float);
if (_chart == null)
{
_chart = new float[dataInFloatLength];
propertySet["chart"] = _chart;
}
for (int i = 0; i < dataInFloatLength; i += 2)
{
inputDataL = inputDataInFloat[i];
inputDataR = inputDataInFloat[i + 1];
_chart[i] = inputDataL;
_chart[i + 1] = inputDataR;
}
}
}
unsafe private void ProcessInputFrame(AudioFrame frame)
{
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Read))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
// We get data from current buffer
((IMemoryBufferByteAccess)reference).GetBuffer(
out byte* dataInBytes,
out uint capacityInBytes
);
// We discard first frame; it's full of zeros because of latency
if (audioGraph.CompletedQuantumCount == 1) return;
float* dataInFloat = (float*)dataInBytes;
uint capacityInFloat = capacityInBytes / sizeof(float);
// Number of channels defines step between samples in buffer
uint step = fileInputNode.EncodingProperties.ChannelCount;
// We transfer audio samples from buffer into audioData
for (uint i = 0; i < capacityInFloat; i += step)
{
if (audioDataCurrentPosition < audioData.Length)
{
audioData[audioDataCurrentPosition] = dataInFloat[i];
audioDataCurrentPosition++;
}
}
}
}
unsafe private void ProcessFrameOutput(AudioFrame frame)
{
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Read))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
// get hold of the buffer pointer
byte *dataInBytes;
uint capacityInBytes;
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes,
out capacityInBytes);
var dataInFloat = (float *)dataInBytes;
// examine
float max = 0;
for (int n = 0; n < graph.SamplesPerQuantum; n++)
{
max = Math.Max(Math.Abs(dataInFloat[n]), max);
}
currentPeak = max;
float x = currentPeak * 1000;
double Bri = Math.Pow(x, 3); // Sensitivity slider value
byte Brightness = (byte)Math.Round(Bri, 0); // Calculating to a 0 - 255 value to control the light brightness
Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
OutputText.Text = Brightness.ToString();
});
}
}
public unsafe void ProcessFrame(ProcessAudioFrameContext context)
{
AudioFrame inputFrame = context.InputFrame;
AudioFrame outputFrame = context.OutputFrame;
using (AudioBuffer inputBuffer = inputFrame.LockBuffer(AudioBufferAccessMode.Read),
outputBuffer = outputFrame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference inputReference = inputBuffer.CreateReference(),
outputReference = outputBuffer.CreateReference())
{
((IMemoryBufferByteAccess)inputReference).GetBuffer(out var inputDataInBytes, out _);
((IMemoryBufferByteAccess)outputReference).GetBuffer(out var outputDataInBytes, out _);
float *inputDataInFloat = (float *)inputDataInBytes;
float *outputDataInFloat = (float *)outputDataInBytes;
// Process audio data
int dataInFloatLength = (int)inputBuffer.Length / sizeof(float);
for (int i = 0; i < dataInFloatLength; i++)
{
// var inputData = inputDataInFloat[i] * (1.0f - Mix);
var inputData = inputDataInFloat[i];
outputDataInFloat[i] = ProcessFilterSample(inputData);
}
}
}
unsafe public void ProcessFrame(ProcessAudioFrameContext context)
{
AudioFrame inputFrame = context.InputFrame;
using (AudioBuffer inputBuffer = context.InputFrame.LockBuffer(AudioBufferAccessMode.Read))
using (IMemoryBufferReference inputReference = inputBuffer.CreateReference())
{
byte * inputInBytes;
uint inputCapacity;
float *inputInFloats;
((IMemoryBufferByteAccess)inputReference).GetBuffer(out inputInBytes, out inputCapacity);
inputInFloats = (float *)inputInBytes;
int inputLength = (int)inputBuffer.Length / sizeof(float);
float sum = 0;
// Only process one channel for now (will average out unless the audio is severely unbalanced between left/right)
for (int i = 0; i < inputLength; i += 2)
{
sum += (inputInFloats[i] * inputInFloats[i]);
}
double rms = Math.Sqrt(sum / (inputLength / 2));
this.VolumeInDecibels = 20 * Math.Log10(rms);
}
}
unsafe private static void ProcessFrameOutput(AudioFrame frame)
{
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
byte * dataInBytes;
uint capacityInBytes;
float *dataInFloat;
// Get the buffer from the AudioFrame
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacityInBytes);
dataInFloat = (float *)dataInBytes;
float[] dataInFloats = new float[capacityInBytes / sizeof(float)];
for (int i = 0; i < capacityInBytes / sizeof(float); i++)
{
dataInFloats[i] = dataInFloat[i];
}
InputRecieved?.Invoke(null, dataInFloats);
}
}
/// <summary>
/// Handle frame of mic input
/// </summary>
/// <param name="frame"></param>
private static unsafe void ProcessFrameOutput(AudioFrame frame)
{
float[] dataInFloats;
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
// Get the buffer from the AudioFrame
((IMemoryBufferByteAccess)reference).GetBuffer(out byte *dataInBytes, out uint capacityInBytes);
float *dataInFloat = (float *)dataInBytes;
dataInFloats = new float[capacityInBytes / sizeof(float)];
for (int i = 0; i < capacityInBytes / sizeof(float); i++)
{
dataInFloats[i] = dataInFloat[i];
}
}
// Don't bother if muted
if (LocalState.VoiceState.SelfMute || LocalState.VoiceState.ServerMute)
{
AudioInSpec1 = 0;
AudioInSpec2 = 0;
AudioInSpec3 = 0;
AudioInSpec4 = 0;
AudioInSpec5 = 0;
AudioInSpec6 = 0;
AudioInSpec7 = 0;
AudioInSpec8 = 0;
AudioInSpec9 = 0;
AudioInAverage = 0;
}
else
{
// Determine FFT data
List <float[]> amplitudeData = FFT.Processing.HelperMethods.ProcessFrameOutput(frame);
List <float[]> channelData = FFT.Processing.HelperMethods.GetFftData(FFT.Processing.HelperMethods.ConvertTo512(amplitudeData, ingraph), ingraph);
float[] leftChannel = channelData[1];
// Assign each FFT data out channel
AudioInSpec1 = HelperMethods.Max(leftChannel, 0, 1);
AudioInSpec2 = HelperMethods.Max(leftChannel, 2, 3);
AudioInSpec3 = HelperMethods.Max(leftChannel, 3, 4);
AudioInSpec4 = HelperMethods.Max(leftChannel, 4, 5);
AudioInSpec5 = HelperMethods.Max(leftChannel, 5, 6);
AudioInSpec6 = HelperMethods.Max(leftChannel, 7, 8);
AudioInSpec7 = HelperMethods.Max(leftChannel, 9, 10);
AudioInSpec8 = HelperMethods.Max(leftChannel, 10, 12);
AudioInSpec9 = HelperMethods.Max(leftChannel, 14, 26);
AudioInAverage = (AudioInSpec1 + AudioInSpec2 + AudioInSpec3 + AudioInSpec4 + AudioInSpec5 + AudioInSpec5 + AudioInSpec6 + AudioInSpec7 + AudioInSpec8 + AudioInSpec9) / 9;
}
InputRecieved?.Invoke(null, dataInFloats);
}
unsafe public void ProcessFrame(ProcessAudioFrameContext context)
{
//foreach (var item in context.InputFrame.ExtendedProperties.Keys)
//{
// Debug.WriteLine(item);
//}
const int videoFrameRate = 60; // TODO: we should probably measure this
//Debug.WriteLine(sw.ElapsedMilliseconds.ToString());
AudioFrame inputFrame = context.InputFrame;
using (AudioBuffer inputBuffer = inputFrame.LockBuffer(AudioBufferAccessMode.Read))
using (IMemoryBufferReference inputReference = inputBuffer.CreateReference())
{
byte * inputInBytes;
uint inputCapacity;
float *inputInFloats;
((IMemoryBufferByteAccess)inputReference).GetBuffer(out inputInBytes, out inputCapacity);
inputInFloats = (float *)inputInBytes;
int inputLengthSamples = (int)inputBuffer.Length / sizeof(float);
int samplesPervBlank = (int)((float)currentEncodingProperties.SampleRate / (float)videoFrameRate);
int numVBlanksForCurrentAudioBuffer = (int)Math.Ceiling(((float)context.InputFrame.Duration.Value.Milliseconds / ((1.0f / (float)videoFrameRate) * 1000)));
var volumeSetLeft = new double[numVBlanksForCurrentAudioBuffer];
var volumeSetRight = new double[numVBlanksForCurrentAudioBuffer];
//Left Channel
CalcAudioVolumedBPerVBlank(inputInFloats, inputLengthSamples, samplesPervBlank, volumeSetLeft, 0, (int)currentEncodingProperties.ChannelCount);
if (currentEncodingProperties.ChannelCount == 2)
{
//Right Channel
CalcAudioVolumedBPerVBlank(inputInFloats, inputLengthSamples, samplesPervBlank, volumeSetRight, 1, (int)currentEncodingProperties.ChannelCount);
}
lock (PassthroughEffect.GetBadLock())
{
for (var i = 0; i < numVBlanksForCurrentAudioBuffer; i++)
{
((Queue <Tuple <double, double> >) this.propertySet["dataQueue"]).Enqueue(new Tuple <double, double>(volumeSetLeft[i], volumeSetRight[i]));
}
//((Queue<Double[]>)this.propertySet["AudioVolumeLeftQueue"]).Enqueue(volumeSetLeft);
//((Queue<Double[]>)this.propertySet["AudioVolumeRightQueue"]).Enqueue(volumeSetRight);
//this.propertySet["VolumeLeft"] = volumeSetLeft;
//this.propertySet["VolumeRight"] = volumeSetRight;
}
}
}
internal unsafe VisualizationData(AudioFrame frame)
{
m_Buffer = frame.LockBuffer(AudioBufferAccessMode.Read);
m_BufferReference = m_Buffer.CreateReference();
byte *pData;
uint capacity;
((IMemoryBufferByteAccess)m_BufferReference).GetBuffer(out pData, out capacity);
m_pData = (float *)pData;
m_DataCapacity = m_Buffer.Length / sizeof(float);
m_DataStep = (uint)frame.ExtendedProperties["{3F692E37-FC20-48DD-93D2-2234E1B1AA23}"];
}
//</SnippetQuantumProcessed>
//<SnippetProcessFrameOutput>
unsafe private void ProcessFrameOutput(AudioFrame frame)
{
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
byte * dataInBytes;
uint capacityInBytes;
float *dataInFloat;
// Get the buffer from the AudioFrame
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacityInBytes);
dataInFloat = (float *)dataInBytes;
}
}
unsafe public static void AddFrame(float[] framedata, uint samples)
{
if (!ready)
{
return;
}
//if (!started)
//{
// //graph.Start();
// //started = true;
//}
AudioFrame frame = new AudioFrame(samples * 2 * sizeof(float));
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
byte *dataInBytes;
uint capacityInBytes;
// Get the buffer from the AudioFrame
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacityInBytes);
// Cast to float since the data we are generating is float
float *dataInFloat = (float *)dataInBytes;
fixed(float *frames = framedata)
{
for (int i = 0; i < samples * 2; i++)
{
dataInFloat[i] = frames[i];
}
}
}
//List<float[]> amplitudeData = FFT.Processing.HelperMethods.ProcessFrameOutput(frame);
//List<float[]> channelData = FFT.Processing.HelperMethods.GetFftData(FFT.Processing.HelperMethods.ConvertTo512(amplitudeData, outgraph), outgraph);
//float[] leftChannel = channelData[1];
//AudioSpec1 = HelperMethods.Max(leftChannel, 0, 1);
//AudioSpec2 = HelperMethods.Max(leftChannel, 2, 3);
//AudioSpec3 = HelperMethods.Max(leftChannel, 3, 4);
//AudioSpec4 = HelperMethods.Max(leftChannel, 4, 5);
//AudioSpec5 = HelperMethods.Max(leftChannel, 5, 6);
//AudioSpec6 = HelperMethods.Max(leftChannel, 7, 8);
//AudioSpec7 = HelperMethods.Max(leftChannel, 9, 10);
//AudioSpec8 = HelperMethods.Max(leftChannel, 10, 12);
//AudioSpec9 = HelperMethods.Max(leftChannel, 14, 26);
frameInputNode.AddFrame(frame);
}
unsafe private void ProcessFrameOutput(AudioFrame frame)
{
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
byte *dataInBytes;
uint capacityInBytes;
// Get the buffer from the AudioFrame
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacityInBytes);
for (int i = 0; i < capacityInBytes; i++)
{
dataInFloat[i] = *((float *)dataInBytes + i);
}
SendHello(capacityInBytes);
}
}
// </SnippetMixProperty>
// <SnippetProcessFrame>
unsafe public void ProcessFrame(ProcessAudioFrameContext context)
{
AudioFrame inputFrame = context.InputFrame;
AudioFrame outputFrame = context.OutputFrame;
using (AudioBuffer inputBuffer = inputFrame.LockBuffer(AudioBufferAccessMode.Read),
outputBuffer = outputFrame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference inputReference = inputBuffer.CreateReference(),
outputReference = outputBuffer.CreateReference())
{
byte *inputDataInBytes;
byte *outputDataInBytes;
uint inputCapacity;
uint outputCapacity;
((IMemoryBufferByteAccess)inputReference).GetBuffer(out inputDataInBytes, out inputCapacity);
((IMemoryBufferByteAccess)outputReference).GetBuffer(out outputDataInBytes, out outputCapacity);
float *inputDataInFloat = (float *)inputDataInBytes;
float *outputDataInFloat = (float *)outputDataInBytes;
float inputData;
float echoData;
// Process audio data
int dataInFloatLength = (int)inputBuffer.Length / sizeof(float);
for (int i = 0; i < dataInFloatLength; i++)
{
inputData = inputDataInFloat[i] * (1.0f - this.Mix);
echoData = echoBuffer[currentActiveSampleIndex] * this.Mix;
outputDataInFloat[i] = inputData + echoData;
echoBuffer[currentActiveSampleIndex] = inputDataInFloat[i];
currentActiveSampleIndex++;
if (currentActiveSampleIndex == echoBuffer.Length)
{
// Wrap around (after one second of samples)
currentActiveSampleIndex = 0;
}
}
}
}
unsafe public void ProcessFrame(ProcessAudioFrameContext context)
{
AudioFrame inputFrame = context.InputFrame;
using (AudioBuffer inputBuffer = inputFrame.LockBuffer(AudioBufferAccessMode.Read))
using (IMemoryBufferReference inputReference = inputBuffer.CreateReference())
{
byte* inputDataInBytes;
uint inputCapacity;
((IMemoryBufferByteAccess)inputReference).GetBuffer(out inputDataInBytes, out inputCapacity);
float* inputDataInFloat = (float*)inputDataInBytes;
// Process audio data
int dataInFloatLength = (int)inputBuffer.Length / sizeof(float);
for (int i = 0; i < dataInFloatLength; i++)
{
float inputData = inputDataInFloat[i];
lock (badLock)
{
if (propertySet.ContainsKey("InputDataRaw"))
{
propertySet["InputDataRaw"] = inputData;
}
else
{
propertySet.Add("InputDataRaw", inputData);
}
}
if (compositionPropertySet != null)
{
compositionPropertySet.InsertScalar("InputData", inputData * 500);
}
}
}
}
private unsafe AudioFrame GenerateAudioData(uint samples)
{
uint samplesMCh = samples * AudioGraph.EncodingProperties.ChannelCount;
uint bufferSize = sizeof(float) * samplesMCh;
AudioFrame frame = new AudioFrame(bufferSize);
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
// Get the buffer from the AudioFrame
((IMemoryBufferByteAccess)reference).GetBuffer(out byte *dataInBytes, out uint capacityInBytes);
long u = bufferSize;
do
{
var read = FillBuffer(u > sampleCap ? sampleCap : (int)u, dataInBytes);
dataInBytes += read;
u -= read;
} while (u > 0);
}
return(frame);
}
unsafe void ProcessFrameOutput(AudioFrame frame)
{
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
byte * dataInBytes;
uint capacityInBytes;
float *dataInFloat;
// Get the buffer from the AudioFrame
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacityInBytes);
dataInFloat = (float *)dataInBytes;
data.Clear();
for (int i = 0; i <= 32; i++)
{
data.Add(dataInFloat[i]);
}
}
}
unsafe private void ProcessFrameOutput(AudioFrame frame)
{
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Read))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
((IMemoryBufferByteAccess)reference).GetBuffer(out byte *dataInBytes, out uint capacityInBytes);
if (capacityInBytes > 0)
{
float *dataInFloats = (float *)dataInBytes;
short[] shorts = new short[capacityInBytes / 4];
for (int i = 0; i < capacityInBytes / 4; i++)
{
shorts[i] = (short)((65535 * dataInFloats[i] - 1) / 2);
}
bufferQueue.Enqueue(shorts);
}
}
}
unsafe private AudioFrame GenerateAudioData(int requiredSamples)
{
// Buffer size is (number of samples) * (size of each sample)
// We choose to generate single channel (mono) audio. For multi-channel, multiply by number of channels
uint bufferSizeElements = (uint)requiredSamples * NumChannels;
uint bufferSizeBytes = bufferSizeElements * sizeof(float);
AudioFrame frame = new AudioFrame(bufferSizeBytes);
using (AudioBuffer buffer = frame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
byte * dataInBytes;
uint capacityInBytes;
float *dataInFloat;
// Get the buffer from the AudioFrame
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacityInBytes);
// Cast to float since the data we are generating is float
dataInFloat = (float *)dataInBytes;
lock (SamplesBuffer)
{
var numElementsToCopy = Math.Min(bufferSizeElements, SamplesBuffer.Count);
for (var i = 0; i < numElementsToCopy; i++)
{
var converted = (float)SamplesBuffer.Dequeue() / short.MaxValue;
dataInFloat[i] = converted;
}
//Should we not have enough samples in buffer, set the remaing data in audio frame to zeros
for (var i = numElementsToCopy; i < bufferSizeElements; i++)
{
dataInFloat[i] = 0f;
}
}
}
return(frame);
}
public void ProcessFrame(ProcessAudioFrameContext context)
{
unsafe
{
AudioFrame inputFrame = context.InputFrame;
AudioFrame outputFrame = context.OutputFrame;
using (AudioBuffer inputBuffer = inputFrame.LockBuffer(AudioBufferAccessMode.Read),
outputBuffer = outputFrame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference inputReference = inputBuffer.CreateReference(),
outputReference = outputBuffer.CreateReference())
{
((IMemoryBufferByteAccess)inputReference).GetBuffer(out byte *inputDataInBytes, out uint inputCapacity);
((IMemoryBufferByteAccess)outputReference).GetBuffer(out byte *outputDataInBytes, out uint outputCapacity);
float *inputDataInFloat = (float *)inputDataInBytes;
float *outputDataInFloat = (float *)outputDataInBytes;
// Process audio data
int dataInFloatLength = (int)inputBuffer.Length / sizeof(float);
}
}
}
unsafe public void ProcessFrame(ProcessAudioFrameContext context)
{
AudioFrame inputFrame = context.InputFrame;
AudioFrame outputFrame = context.OutputFrame;
using (AudioBuffer inputBuffer = inputFrame.LockBuffer(AudioBufferAccessMode.Read),
outputBuffer = outputFrame.LockBuffer(AudioBufferAccessMode.Write))
using (IMemoryBufferReference inputReference = inputBuffer.CreateReference(),
outputReference = outputBuffer.CreateReference())
{
byte *inputDataInBytes;
byte *outputDataInBytes;
uint inputCapacity;
uint outputCapacity;
((IMemoryBufferByteAccess)inputReference).GetBuffer(out inputDataInBytes, out inputCapacity);
((IMemoryBufferByteAccess)outputReference).GetBuffer(out outputDataInBytes, out outputCapacity);
float *inputDataInFloat = (float *)inputDataInBytes;
float *outputDataInFloat = (float *)outputDataInBytes;
float inputDataL;
float inputDataR;
// Process audio data
int dataInFloatLength = (int)inputBuffer.Length / sizeof(float);
for (int i = 0; i < dataInFloatLength; i += 2)
{
inputDataL = inputDataInFloat[i] * ((Balance < 0) ? 1 : (1.0f - this.Balance));
inputDataR = inputDataInFloat[i + 1] * ((Balance > 0) ? 1 : (1.0f + this.Balance));
outputDataInFloat[i] = inputDataL;
outputDataInFloat[i + 1] = inputDataR;
}
}
}
unsafe private void ProcessAudioFrame(AudioMediaFrame audioMediaFrame)
{
using (AudioFrame audioFrame = audioMediaFrame.GetAudioFrame())
using (AudioBuffer buffer = audioFrame.LockBuffer(AudioBufferAccessMode.Read))
using (IMemoryBufferReference reference = buffer.CreateReference())
{
byte *dataInBytes;
uint capacityInBytes;
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacityInBytes);
float *dataInFloat = (float *)dataInBytes;
TimeSpan duration = audioMediaFrame.FrameReference.Duration;
uint frameDurMs = (uint)duration.TotalMilliseconds;
uint sampleRate = audioMediaFrame.AudioEncodingProperties.SampleRate;
uint sampleCount = (frameDurMs * sampleRate) / 1000;
// Only send input signals of 1st~5th channel
byte[] buf = new byte[4 * (5 * sampleCount + 3)];
fixed(byte *pBufByte = buf)
{
float *pBufFloat = (float *)pBufByte;
uint * pBufUint = (uint *)pBufByte;
pBufUint[0] = 5;
pBufUint[1] = sampleCount;
pBufUint[2] = sampleRate;
for (uint i = 0; i < 5 * sampleCount; i++)
{
uint frameIdx = i / 5;
uint channelIdx = i % 5;
pBufFloat[3 + 5 * frameIdx + channelIdx] = dataInFloat[11 * frameIdx + channelIdx];
}
}
audioStream.WriteAsync(buf.AsBuffer());
}
}
