public unsafe int Process(byte *compressed, int compressedCount, short *outBuffer, int outBufferCount)
{
//Allocate memory for our info struct
UnsafeBuffer infoP = UnsafeBuffer.Create(1, sizeof(NeAACDecFrameInfo));
NeAACDecFrameInfo *info = (NeAACDecFrameInfo *)infoP;
//Process
short *data = NeAACDecDecode(ctx, (IntPtr)infoP.Address, compressed, compressedCount);
//Read what we need from the struct and then clean up
int error = info->error;
int samples = info->samples;
infoP.Dispose();
info = null;
//Validate that there were no errors
if (error > 0)
{
throw new Exception($"FAAD reported an error while decoding: " + NeAACDecGetErrorMessageManaged(info->error));
}
//Validate we have space to copy
if (samples > outBufferCount)
{
throw new Exception($"Output buffer was not large enough for the number of incoming samples, {info->samples}!");
}
//Copy
Utils.Memcpy(outBuffer, data, samples * sizeof(short));
return(samples);
}
private unsafe void ReceiveSamples_sync()
{
while (_isStreaming)
{
if (_iqBuffer == null || _iqBuffer.Length != _readLength)
{
_iqBuffer = UnsafeBuffer.Create((int)_readLength, sizeof(Complex));
_iqPtr = (Complex *)_iqBuffer;
}
if (_samplesBuffer == null || _samplesBuffer.Length != (2 * _readLength))
{
_samplesBuffer = UnsafeBuffer.Create((int)(2 * _readLength), sizeof(float));
_samplesPtr = (float *)_samplesBuffer;
}
NativeMethods.LMS_RecvStream(_stream, _samplesPtr, _readLength, IntPtr.Zero, SampleTimeoutMs);
var ptrIq = _iqPtr;
for (int i = 0; i < _readLength; i++)
{
ptrIq->Real = _samplesPtr[i * 2];
ptrIq->Imag = _samplesPtr[i * 2 + 1];
ptrIq++;
}
ComplexSamplesAvailable(_iqPtr, _iqBuffer.Length);
}
}
/*
* Allocate and initialize the trellis object
*
* Initialization consists of generating the outputs and output value of a
* given state. Due to trellis symmetry, only one of the transition paths
* is used by the butterfly operation in the forward recursion, so only one
* set of N outputs is required per state variable.
*/
static vtrellis generate_trellis(lte_conv_code code)
{
vtrellis trellis;
short * o;
int ns = NUM_STATES(code.k);
int olen = (code.n == 2) ? 2 : 4;
trellis = new vtrellis();
trellis.num_states = ns;
trellis.sumsBuffer = UnsafeBuffer.Create(ns, sizeof(short));
trellis.sums = (short *)trellis.sumsBuffer;
trellis.outputsBuffer = UnsafeBuffer.Create(ns * olen, sizeof(short));
trellis.outputs = (short *)trellis.outputsBuffer;
trellis.valsBuffer = UnsafeBuffer.Create(ns, sizeof(sbyte));
trellis.vals = (sbyte *)trellis.valsBuffer;
/* Populate the trellis state objects */
for (int i = 0; i < ns; i++)
{
o = &trellis.outputs[olen * i];
if (code.rgen != 0)
{
gen_rec_state_info(code, &trellis.vals[i], i, o);
}
else
{
gen_state_info(code, &trellis.vals[i], i, o);
}
}
return(trellis);
}
public MainWindow()
{
InitializeComponent();
_fftSpectrum = UnsafeBuffer.Create(_fftBins, sizeof(float));
_fftSpectrumPtr = (float *)_fftSpectrum;
}
public AudioResource(SpectrumVideoDemodConfig config, CanvasContext ctx)
{
//Set
this.label = config.label;
//Get demodulator
switch (config.demodType)
{
case "WBFM": demodulator = new WbFmDemodulator(); break;
default: throw new Exception("Unknown demodulator type.");
}
//Make buffers
bufferSize = ctx.BufferSize;
generalBuffer = UnsafeBuffer.Create(ctx.BufferSize, out generalBufferComplexPtr);
generalBufferFloatPtr = (float *)generalBufferComplexPtr;
audioABuffer = UnsafeBuffer.Create(ctx.BufferSize, out audioABufferPtr);
audioBBuffer = UnsafeBuffer.Create(ctx.BufferSize, out audioBBufferPtr);
//Init audio
demodDecimator = ComplexDecimator.CalculateDecimator(ctx.DecimatedSampleRate, config.demodBandwidth, 20, config.demodBandwidth * 0.05f, out float demodSampleRate);
float actualAudioRate = demodulator.Configure(ctx.BufferSize, demodSampleRate, config.outputSampleRate);
audioResampler = new ArbitraryStereoResampler(actualAudioRate, config.outputSampleRate, ctx.BufferSize);
//Create output
output = ctx.OutputProvider.GetAudioOutput(config.outputFilename, config.outputSampleRate, bufferSize);
}
private static int HackRFSamplesAvailable(hackrf_transfer *ptr)
{
sbyte *buf = ptr->buffer;
int len = ptr->buffer_length;
IntPtr ctx = ptr->rx_ctx;
var gcHandle = GCHandle.FromIntPtr(ctx);
if (!gcHandle.IsAllocated)
{
return(-1);
}
var instance = (HackRFDevice)gcHandle.Target;
var sampleCount = (int)len / 2;
if (instance._iqBuffer == null || instance._iqBuffer.Length != sampleCount)
{
instance._iqBuffer = UnsafeBuffer.Create(sampleCount, sizeof(Complex));
instance._iqPtr = (Complex *)instance._iqBuffer;
}
var ptrIq = instance._iqPtr;
for (var i = 0; i < sampleCount; i++)
{
ptrIq->Imag = _lutPtr[*buf++];
ptrIq->Real = _lutPtr[*buf++];
ptrIq++;
}
instance.ComplexSamplesAvailable(instance._iqPtr, instance._iqBuffer.Length);
return(0);
}
private unsafe static void SdrIqSamplesAvailable(short *buf, uint len, IntPtr ctx)
{
GCHandle gCHandle = GCHandle.FromIntPtr(ctx);
if (gCHandle.IsAllocated)
{
SdrIqDevice sdrIqDevice = (SdrIqDevice)gCHandle.Target;
int num = (int)len / 2;
if (sdrIqDevice._iqBuffer == null || sdrIqDevice._iqBuffer.Length != num)
{
sdrIqDevice._iqBuffer = UnsafeBuffer.Create(num, sizeof(Complex));
sdrIqDevice._iqPtr = (Complex *)(void *)sdrIqDevice._iqBuffer;
}
Complex *ptr = sdrIqDevice._iqPtr;
for (int i = 0; i < num; i++)
{
Complex *intPtr = ptr;
float * lut = SdrIqDevice._lut16;
short * intPtr2 = buf;
buf = intPtr2 + 1;
intPtr->Imag = lut[*intPtr2 + 32768];
Complex *intPtr3 = ptr;
float * lut2 = SdrIqDevice._lut16;
short * intPtr4 = buf;
buf = intPtr4 + 1;
intPtr3->Real = lut2[*intPtr4 + 32768];
ptr++;
}
sdrIqDevice.ComplexSamplesAvailable(sdrIqDevice._iqPtr, sdrIqDevice._iqBuffer.Length);
}
}
public void Configure(float sampleRate, int bufferSize)
{
//Complain if too low
if (sampleRate < BAUD_RATE)
{
throw new Exception($"The sample rate specified, {sampleRate}, is too low to be useful. Must be >= {BAUD_RATE}.");
}
//Create parts
fmDemod = new FmBasebandDemodulator();
fmDemod.Configure(bufferSize, sampleRate);
amDemod = new AmBasebandDemodulator();
osc = new Oscillator(sampleRate, -2400);
symbolsPerSample = BAUD_RATE / sampleRate;
//Make filter
var filterBuilder = new LowPassFilterBuilder(sampleRate, 2080)
.SetAutomaticTapCount(200)
.SetWindow();
filter = RealFirFilter.CreateFirFilter(filterBuilder);
//Create buffer
buffer?.Dispose();
buffer = UnsafeBuffer.Create(bufferSize, out bufferPtr);
}
private unsafe void SdrSamplesAvailable(object sender, CaptureEventArgs e)
{
/*GCHandle gcHandle = this._gcHandle;
* if (!gcHandle.IsAllocated)
* return;*/
//CyCaptureDevice target = (CyCaptureDevice) gcHandle.Target;
CyCaptureDevice target = this;
int length = (int)e.BytesCaptures;
if (target._iqBuffer == null || target._iqBuffer.Length != length)
{
target._iqBuffer = UnsafeBuffer.Create(length, sizeof(Complex));
target._iqPtr = (Complex *)(void *)target._iqBuffer;
}
float iavg = target._iavg;
float qavg = target._qavg;
float alpha = target._alpha;
Complex *iqPtr = target._iqPtr;
for (int index = 0; index < length; index++)
{
//iqPtr->Real = CyCaptureDevice._lutPtr[*buf++];
//iqPtr->Imag = CyCaptureDevice._lutPtr[*buf++];
iqPtr->Real = captureDevice.ResultBuffer[index];
iqPtr->Imag = captureDevice.ResultBuffer[index];
iavg += alpha * (iqPtr->Real - iavg);
qavg += alpha * (iqPtr->Imag - qavg);
iqPtr->Real -= iavg;
iqPtr->Imag -= qavg;
++iqPtr;
}
target._iavg = iavg;
target._qavg = qavg;
target.ComplexSamplesAvailable(target._iqPtr, target._iqBuffer.Length);
}
public void Read(Complex *iqBuffer, int length)
{
if (_temp == null || _temp.Length != _blockAlign * length)
{
_temp = new byte[_blockAlign * length];
_tempBuffer = UnsafeBuffer.Create(_temp);
_tempPtr = (byte *)_tempBuffer;
}
var pos = 0;
var size = _tempBuffer.Length;
while (pos < size)
{
int toget = size - pos;
int got = _stream.Read(_temp, pos, toget);
if (got < toget)
{
_stream.Position = _dataPos; // loop if the file ends
}
if (got <= 0)
{
break;
}
pos += got;
}
FillIQ(iqBuffer, length);
}
protected override void RedrawView()
{
//Save or rerender buffer
if (backgroundBuffer == null || backgroundBuffer.Length != Width * Height)
{
backgroundBuffer?.Dispose();
backgroundBuffer = UnsafeBuffer.Create(Width * Height, out backgroundBufferPtr);
byte *bufferPtr = (byte *)GetPixelPointer(0, 0);
for (int i = 0; i < Width * Height * 4; i++)
{
bufferPtr[i] /= 2;
}
Utils.Memcpy(backgroundBufferPtr, GetPixelPointer(0, 0), Width * Height * sizeof(DisplayPixel));
}
else
{
Utils.Memcpy(GetPixelPointer(0, 0), backgroundBufferPtr, Width * Height * sizeof(DisplayPixel));
}
//Calculate offsets
int y = (Height - WINDOW_HEIGHT) / 2;
int x = (Width - WINDOW_WIDTH) / 2;
//Draw background
UtilFill(DisplayPixel.BLACK, x, y, WINDOW_WIDTH, WINDOW_HEIGHT);
UtilFill(DisplayPixel.RED, x, y + 40, WINDOW_WIDTH, 1);
UtilOutline(DisplayPixel.RED, x, y, WINDOW_WIDTH, WINDOW_HEIGHT, 1);
//Draw text
FontStore.SYSTEM_REGULAR_15.RenderPretty(GetOffsetContext(x + WINDOW_PADDING, y), title.ToCharArray(), DisplayPixel.RED, AlignHorizontal.Left, AlignVertical.Center, WINDOW_WIDTH - WINDOW_PADDING - WINDOW_PADDING, 40);
FontStore.SYSTEM_REGULAR_15.RenderPretty(GetOffsetContext(x + WINDOW_PADDING, y + 42 + WINDOW_PADDING), message.ToCharArray(), DisplayPixel.WHITE, AlignHorizontal.Left, AlignVertical.Top, WINDOW_WIDTH - WINDOW_PADDING - WINDOW_PADDING, WINDOW_HEIGHT - WINDOW_PADDING - 42);
}
private unsafe static void RtlSdrSamplesAvailable(byte *buf, uint len, IntPtr ctx)
{
GCHandle gCHandle = GCHandle.FromIntPtr(ctx);
if (gCHandle.IsAllocated)
{
RtlDevice rtlDevice = (RtlDevice)gCHandle.Target;
int num = (int)len / 2;
if (rtlDevice._iqBuffer == null || rtlDevice._iqBuffer.Length != num)
{
rtlDevice._iqBuffer = UnsafeBuffer.Create(num, sizeof(Complex));
rtlDevice._iqPtr = (Complex *)(void *)rtlDevice._iqBuffer;
}
Complex *ptr = rtlDevice._iqPtr;
for (int i = 0; i < num; i++)
{
Complex *intPtr = ptr;
byte * intPtr2 = buf;
buf = intPtr2 + 1;
intPtr->Imag = (float)(*intPtr2 - 128) * 0.0078125f;
Complex *intPtr3 = ptr;
byte * intPtr4 = buf;
buf = intPtr4 + 1;
intPtr3->Real = (float)(*intPtr4 - 128) * 0.0078125f;
ptr++;
}
rtlDevice.ComplexSamplesAvailable(rtlDevice._iqPtr, rtlDevice._iqBuffer.Length);
}
}
private void InternalConfigure()
{
//Dispose of old buffer if needed
imageBuffer?.Dispose();
//Get size
canvasHeight = Height;
canvasWidth = Width;
//Resize canvas
canvas.Width = canvasWidth;
canvas.Height = canvasHeight;
//Make new buffer
imageBuffer = UnsafeBuffer.Create(canvasWidth * canvasHeight, out imageBufferPtr);
//Apply
if (canvasWidth > 0 && canvasHeight > 0)
{
canvas.Image = new Bitmap(canvasWidth, canvasHeight, canvasWidth * sizeof(UnsafeColor), System.Drawing.Imaging.PixelFormat.Format32bppArgb, (IntPtr)imageBufferPtr);
}
//Run configure
Configure(canvasWidth, canvasHeight);
}
private void RecieveSamples()
{
var recBuffer = new byte[BufferSize];
var recUnsafeBuffer = UnsafeBuffer.Create(recBuffer);
var recPtr = (byte *)recUnsafeBuffer;
m_iqBuffer = UnsafeBuffer.Create(BufferSize / 2, sizeof(Complex));
m_iqBufferPtr = (Complex *)m_iqBuffer;
var offs = 0;
while (m_socket != null && m_socket.Connected)
{
try
{
var bytesRec = m_socket.Receive(recBuffer, offs, BufferSize - offs, SocketFlags.None);
var totalBytes = offs + bytesRec;
offs = totalBytes % 2; //Need to correctly handle the hypothetical case where we somehow get an odd number of bytes
ProcessSamples(recPtr, totalBytes - offs); //This might work.
if (offs == 1)
{
recPtr[0] = recPtr[totalBytes - 1];
}
}
catch
{
Close();
break;
}
}
this.m_iqBuffer.Dispose();
this.m_iqBuffer = null;
this.m_iqBufferPtr = null;
GC.KeepAlive(recUnsafeBuffer);
}
public void AddScaledFrame(float *ptr, int width)
{
//Ensure
if (width != Width)
{
return;
}
//If the array size is incorrect, create
if (fftBuffer == null || fftBuffer.Length - 2 != width)
{
fftBuffer?.Dispose();
fftBuffer = UnsafeBuffer.Create(width + 2, sizeof(int));
fftPtr = ((float *)fftBuffer) + 1;
}
//Copy FFT frame
Utils.Memcpy(fftPtr, ptr, Width * sizeof(float));
//Convert and fill padding
for (int i = 0; i < Width; i++)
{
fftPtr[i] = ((Math.Abs(fftPtr[i]) + fftOffset) / fftRange) * Height;
}
fftPtr[-1] = fftPtr[0];
fftPtr[Width] = fftPtr[Width - 1];
//Invalidate
Invalidate();
}
public unsafe PhyLevel()
{
this._tempBuffer = UnsafeBuffer.Create(BurstLength * 2, sizeof(byte));
this._tempBufferPtr = (byte *)(void *)this._tempBuffer;
this._outBuffer = UnsafeBuffer.Create(BurstLength, sizeof(byte));
this._outBufferPtr = (byte *)(void *)this._outBuffer;
}
private static void RtlSdrSamplesAvailable(byte *buf, uint len, IntPtr ctx)
{
var gcHandle = GCHandle.FromIntPtr(ctx);
if (!gcHandle.IsAllocated)
{
return;
}
var instance = (RtlDevice)gcHandle.Target;
var sampleCount = (int)len / 2;
if (instance._iqBuffer == null || instance._iqBuffer.Length != sampleCount)
{
instance._iqBuffer = UnsafeBuffer.Create(sampleCount, sizeof(Complex));
instance._iqPtr = (Complex *)instance._iqBuffer;
}
var ptr = instance._iqPtr;
for (var i = 0; i < sampleCount; i++)
{
ptr->Imag = _lutPtr[*buf++];
ptr->Real = _lutPtr[*buf++];
ptr++;
}
instance.ComplexSamplesAvailable(instance._iqPtr, instance._iqBuffer.Length);
}
public LibUSBAsyncTransfer(IntPtr device, byte endpoint, int bufferSize)
{
//Configure
this.device = device;
this.bufferSize = bufferSize;
//Create buffer
buffer = UnsafeBuffer.Create(bufferSize, out bufferPtr);
//Allocate transfer
transfer = (LibUSBTransfer *)LibUSBNative.libusb_alloc_transfer(0);
//Get the GCHandle for ourself
handle = GCHandle.Alloc(this);
//Populate transfer (same as libusb_fill_bulk_transfer)
transfer->dev_handle = device;
transfer->endpoint = endpoint;
transfer->type = LibUSBTransferType.LIBUSB_TRANSFER_TYPE_BULK;
transfer->timeout = 0;
transfer->buffer = bufferPtr;
transfer->length = bufferSize;
transfer->user_data = (IntPtr)handle;
transfer->callback = Marshal.GetFunctionPointerForDelegate(TransferCallbackDelegate);
}
static void Main(string[] args)
{
if (_rxBuffer == null)
{
_rxBuffer = UnsafeBuffer.Create((int)SampleRate, sizeof(Complex));
_rxBufferPtr = (Complex *)_rxBuffer;
}
Controller = new HackRF_Controller();
Console.Title = "HackRF Samples View";
Console.ReadKey();
Controller.SampleRate = SampleRate;
Controller.Frequency = 100000000;
Controller.VGAGain = 40;
Controller.LNAGain = 24;
//if (TxMode)
//{
// //FileStream fs = new FileStream(filename, FileMode.Open);
// byte[] array = new byte[fs.Length];
// fs.Read(array, 0, array.Length);
// sbyte[] iqArray = Array.ConvertAll(array, b => unchecked((sbyte)b));
// // TO DO Convert iqArray To ComplexFifoStream
// Controller.StartTx();
//}
while (true)
{
Controller.SamplesAvailable += Controller_SamplesAvailable;
}
}
private static void SdrIqSamplesAvailable(short *buf, uint len, IntPtr ctx)
{
var gcHandle = GCHandle.FromIntPtr(ctx);
if (!gcHandle.IsAllocated)
{
return;
}
var instance = (SdrIqDevice)gcHandle.Target;
var sampleCount = (int)len / 2;
if (instance._iqBuffer == null || instance._iqBuffer.Length != sampleCount)
{
instance._iqBuffer = UnsafeBuffer.Create(sampleCount, sizeof(Complex));
instance._iqPtr = (Complex *)instance._iqBuffer;
}
var output = instance._iqPtr;
for (var i = 0; i < sampleCount; i++)
{
output->Imag = _lut16[*buf++ + 32768];
output->Real = _lut16[*buf++ + 32768];
output++;
}
instance.ComplexSamplesAvailable(instance._iqPtr, instance._iqBuffer.Length);
}
public unsafe void MakeLog(byte[] srcPtr, int length, long fMin, long fMax)
{
if (this._tmpBuf == null || this._tmpBuf.Length != length)
{
if (this._tmpBuf != null)
{
this._tmpBuf.Dispose();
}
this._tmpBuf = UnsafeBuffer.Create(length, 1);
this._tmpPtr = (byte *)(void *)this._tmpBuf;
}
if (this._frBuf == null || this._frBuf.Length != length)
{
if (this._frBuf != null)
{
this._frBuf.Dispose();
}
this._frBuf = UnsafeBuffer.Create(length, 8);
this._frPtr = (long *)(void *)this._frBuf;
this._fMax = -1f;
}
if (this._fMin != (float)fMin || this._fMax != (float)fMax)
{
this._fMin = (float)fMin;
this._fMax = (float)fMax;
double num = Math.Log10((double)fMin);
double num2 = Math.Log10((double)fMax);
double num3 = (num2 - num) / (double)length;
for (int i = 0; i < length; i++)
{
this._frPtr[i] = Convert.ToInt32(Math.Pow(10.0, num + (double)i * num3));
}
}
long num4 = 0L;
long num5 = 0L;
int num6 = 0;
int num7 = 0;
for (int j = 0; j < length; j++)
{
num4 = ((num5 <= 0) ? ((j == 0) ? (*this._frPtr) : Convert.ToInt32(Math.Sqrt((double)(this._frPtr[j] * this._frPtr[j - 1])))) : num5);
num5 = ((j == length - 1) ? this._frPtr[length - 1] : Convert.ToInt32(Math.Sqrt((double)(this._frPtr[j] * this._frPtr[j + 1]))));
num6 = ((num7 <= 0) ? Math.Min((int)(num4 * length / fMax), length - 1) : num7);
num7 = Math.Min((int)(num5 * length / fMax), length - 1);
if (num7 > num6)
{
num6++;
}
this._tmpPtr[j] = 0;
for (int k = num6; k <= num7; k++)
{
this._tmpPtr[j] = Math.Max(this._tmpPtr[j], srcPtr[k]);
}
}
for (int l = 0; l < length; l++)
{
srcPtr[l] = this._tmpPtr[l];
}
}
public Frame()
{
bufferB = UnsafeBuffer.Create(MAX_PDU_LEN, out buffer);
pduB = UnsafeBuffer.Create2D(MAX_PROGRAMS, 0x10000, out pdu);
psd_bufB = UnsafeBuffer.Create2D(MAX_PROGRAMS, MAX_AAS_LEN, out psd_buf);
psd_idxB = UnsafeBuffer.Create(MAX_PROGRAMS, out psd_idx);
ccc_bufB = UnsafeBuffer.Create(CCM_BUF_LEN, out ccc_buf);
}
public unsafe ComplexFilter(Complex[] kernel)
: base(ComplexFilter.GetFFTSize(kernel.Length))
{
this._actualKernelLength = kernel.Length;
this._kernelBuffer = UnsafeBuffer.Create(base.FFTSize, sizeof(Complex));
this._kernelPtr = (Complex *)(void *)this._kernelBuffer;
this.SetKernel(kernel);
}
public AptImageDecoder(int width = 2080)
{
//Set
this.width = width;
//Make buffers
frameBuffer = UnsafeBuffer.Create(width, out framePtr);
}
private unsafe void ReceiveSamples_sync()
{
int status = 0;
while (_isStreaming)
{
uint cur_len, new_len;
lock (syncLock)
{
cur_len = new_len = _readLength;
}
if (_iqBuffer == null || _iqBuffer.Length != cur_len)
{
_iqBuffer = UnsafeBuffer.Create((int)cur_len, sizeof(Complex));
_iqPtr = (Complex *)_iqBuffer;
}
if (_samplesBuffer == null || _samplesBuffer.Length != (2 * cur_len))
{
_samplesBuffer = UnsafeBuffer.Create((int)(2 * cur_len), sizeof(Int16));
_samplesPtr = (Int16 *)_samplesBuffer;
}
if ((status = NativeMethods.bladerf_sync_config(_dev, bladerf_module.BLADERF_MODULE_RX, bladerf_format.BLADERF_FORMAT_SC16_Q11, NumBuffers, cur_len, NumBuffers / 2, SampleTimeoutMs)) != 0)
{
_isStreaming = false;
}
while (status == 0 && cur_len == new_len)
{
try
{
status = NativeMethods.bladerf_sync_rx(_dev, _samplesPtr, cur_len, IntPtr.Zero, SampleTimeoutMs);
if (status != 0)
{
throw new ApplicationException(String.Format("bladerf_rx() error. {0}", NativeMethods.bladerf_strerror(status)));
}
var ptrIq = _iqPtr;
var ptrSample = _samplesPtr;
for (int i = 0; i < cur_len; i++)
{
ptrIq->Imag = _lutPtr[*ptrSample & 0x0fff];
ptrSample++;
ptrIq->Real = _lutPtr[*ptrSample & 0x0fff];
ptrSample++;
ptrIq++;
}
ComplexSamplesAvailable(_iqPtr, _iqBuffer.Length);
}
catch
{
break;
}
lock (syncLock)
{
new_len = _readLength;
}
}
}
}
public MacLevel()
{
for (int i = 0; i < 4; i++)
{
_fragmentsHeader[i] = new ReceivedData();
_tempBuffers[i] = UnsafeBuffer.Create(4096, sizeof(byte));
_tempBuffersPtr[i] = (byte *)_tempBuffers[i];
}
}
private void SendDemodMagic(byte page, ushort offset, uint length, byte[] magic)
{
UnsafeBuffer data = UnsafeBuffer.Create(magic);
byte * dataPtr = (byte *)data;
NativeMethods.RTK_Demod_Byte_Write(page, offset, length, dataPtr);
data.Dispose();
}
private void SendSYSMagic(ushort offset, uint length, byte[] magic)
{
UnsafeBuffer data = UnsafeBuffer.Create(magic);
byte * dataPtr = (byte *)data;
NativeMethods.RTK_SYS_Byte_Write(offset, length, dataPtr);
data.Dispose();
}
public SnrCalculator()
{
//Create FFT
fft = new FFTInstance(SNR_FFT_SIZE);
//Create buffers
buffer = UnsafeBuffer.Create(SNR_BUFFER_SIZE, out bufferPtr);
powerBuffer = UnsafeBuffer.Create(SNR_FFT_SIZE_HALF, out powerBufferPtr);
}
public unsafe NoiseFilter(int fftSize = 4096)
: base(fftSize, 0.2f)
{
this._gainBuffer = UnsafeBuffer.Create(fftSize, 4);
this._gainPtr = (float *)(void *)this._gainBuffer;
this._smoothedGainBuffer = UnsafeBuffer.Create(fftSize, 4);
this._smoothedGainPtr = (float *)(void *)this._smoothedGainBuffer;
this._powerBuffer = UnsafeBuffer.Create(fftSize, 4);
this._powerPtr = (float *)(void *)this._powerBuffer;
}