/// <summary>Swaps the I and Q channels in the array of data.</summary>
/// <param name="buffer">The buffer.</param>
/// <param name="floatOffset">The offset to the first floating point value to convert.</param>
/// <param name="complexCount">The number of complex values to convert.</param>
public static void SwapIQ(float[] buffer, int floatOffset, int complexCount)
{
fixed(float *pBuf = buffer)
{
Complex32 *pDst = (Complex32 *)(pBuf + floatOffset);
for (int sample = 0; sample < complexCount; sample++, pDst++)
{
*pDst = new Complex32((*pDst).Imaginary, (*pDst).Real);
}
}
}
/// <summary>Convert data format.</summary>
/// <param name="source">The source array.</param>
/// <param name="srcOffset">The offset to the first value in the source array.</param>
/// <param name="destination">The destination array.</param>
/// <param name="dstOffset">The offset to the first value in the destination array.</param>
/// <param name="dstStride">The stride in the destination array.</param>
/// <param name="complexCount">The number of the complex values to output.</param>
public static void ComplexToStrided(Complex32[] source, int srcOffset,
float[] destination, int dstOffset, int dstStride, int complexCount)
{
fixed(Complex32 *pSrc = source)
fixed(float *pDst = destination)
{
Complex32 *src = pSrc + srcOffset;
float * dst = pDst + dstOffset;
for (int i = 0; i < complexCount; i++, src++, dst += dstStride)
{
*(Complex32 *)dst = *src;
}
}
}
//float[] to Complex32[]
/// <summary>Unpacks complex values from the array of floats.</summary>
/// <param name="source">The source array.</param>
/// <param name="srcOffset">The offset to the first value in the source array.</param>
/// <param name="srcStride">The stride in the source array.</param>
/// <param name="destination">The destination array.</param>
/// <param name="dstOffset">The offset to the first value in the destination array.</param>
/// <param name="complexCount">The number of the complex values to output.</param>
public static void StridedToComplex(float[] source, int srcOffset, int srcStride,
Complex32[] destination, int dstOffset, int complexCount)
{
fixed(float *pSrc = source)
fixed(Complex32 * pDst = destination)
{
float * src = pSrc + srcOffset;
Complex32 *dst = pDst + dstOffset;
for (int i = 0; i < complexCount; i++, src += srcStride, dst++)
{
*dst = *(Complex32 *)src;
}
}
}
public static extern IppStatus ippsFIRSRInit_32fc(Complex32 *pTaps, int tapsLen,
IppAlgType algType, IppsFIRSpec_32fc *pSpec);
public static extern IppStatus ippsFIRMR_32fc(Complex32 *pSrc, Complex32 *pDst,
int numIters, IppsFIRSpec_32fc *pSpec, Complex32 *pDlySrc, Complex32 *pDlyDst,
byte *pBuf);
public static extern IppStatus ippsFIRMRInit_32fc(Complex32 *pTaps, int tapsLen,
int upFactor, int upPhase, int downFactor, int downPhase,
IppsFIRSpec_32fc *pSpec);
