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 static unsafe int HackRFSamplesAvailable(hackrf_transfer* ptr)
{
sbyte* numPtr1 = ptr->buffer;
int num1 = ptr->buffer_length;
GCHandle gcHandle = GCHandle.FromIntPtr(ptr->rx_ctx);
if (!gcHandle.IsAllocated)
return -1;
HackRFDevice hackRfDevice = (HackRFDevice) gcHandle.Target;
int length = num1 / 2;
if (hackRfDevice._iqBuffer == null || hackRfDevice._iqBuffer.Length != length)
{
hackRfDevice._iqBuffer = UnsafeBuffer.Create(length, sizeof (Complex));
hackRfDevice._iqPtr = (Complex*) (void*) hackRfDevice._iqBuffer;
}
Complex* complexPtr1 = hackRfDevice._iqPtr;
for (int index = 0; index < length; ++index)
{
Complex* complexPtr2 = complexPtr1;
float* numPtr2 = HackRFDevice._lutPtr;
sbyte* numPtr3 = numPtr1;
IntPtr num2 = new IntPtr(1);
sbyte* numPtr4 = numPtr3 + num2.ToInt64();
IntPtr num3 = (IntPtr) *numPtr3 * 4;
double num4 = (double) *(float*) ((IntPtr) numPtr2 + num3);
complexPtr2->Imag = (float) num4;
Complex* complexPtr3 = complexPtr1;
float* numPtr5 = HackRFDevice._lutPtr;
sbyte* numPtr6 = numPtr4;
IntPtr num5 = new IntPtr(1);
numPtr1 = numPtr6 + num5.ToInt64();
IntPtr num6 = (IntPtr) *numPtr6 * 4;
double num7 = (double) *(float*) ((IntPtr) numPtr5 + num6);
complexPtr3->Real = (float) num7;
++complexPtr1;
}
hackRfDevice.ComplexSamplesAvailable(hackRfDevice._iqPtr, hackRfDevice._iqBuffer.Length);
return 0;
}
