public static void D4C(double[] x, int x_length, int fs, double[] time_axis,
double[] f0, int f0_length, int fft_size, D4COption option,
double[,] aperiodicity)
{
int outer = aperiodicity.GetLength(0);
int inner = aperiodicity.GetLength(1);
IntPtr[] ptrs_ap = new IntPtr[outer];
for (var i = 0; i < outer; i++)
{
ptrs_ap[i] = Marshal.AllocHGlobal(inner * Marshal.SizeOf <double>());
}
CoreDefinitions.D4C(x, x_length, fs, time_axis, f0, f0_length, fft_size, option, ptrs_ap);
var tmp_arr = new double[inner];
for (var i = 0; i < outer; i++)
{
Marshal.Copy(ptrs_ap[i], tmp_arr, 0, inner);
Buffer.BlockCopy(tmp_arr, 0, aperiodicity, i * inner * sizeof(double), inner * sizeof(double));
Marshal.FreeHGlobal(ptrs_ap[i]);
}
}
public void AperiodicityEstimation(double[] x, int x_length, WorldParameters world_parameters)
{
var option = new D4COption();
Core.InitializeD4COption(option);
option.threshold = 0.85;
world_parameters.aperiodicity = new double[world_parameters.f0_length, world_parameters.fft_size / 2 + 1];
Core.D4C(x, x_length, world_parameters.fs, world_parameters.time_axis,
world_parameters.f0, world_parameters.f0_length,
world_parameters.fft_size, option, world_parameters.aperiodicity);
}
public static void InitializeD4COption(D4COption option) => CoreDefinitions.InitializeD4COption(option);
static extern void InitOption([Out] out D4COption option);
static extern void Compute([In] double[] x, int x_length, int fs,
[In] double[] temporal_positions, [In] double[] f0, int f0_length,
int fft_size, [In] ref D4COption option, [In, Out] IntPtr[] aperiodicity);
public static void InitializeD4COption(D4COption option)
{
}
public static void D4C(double[] x, int x_length, int fs, double[] time_axis,
double[] f0, int f0_length, int fft_size, D4COption option,
double[,] aperiodicity)
{
}
public static extern void InitializeD4COption([Out] D4COption option);
public static extern void D4C([In][MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)] double[] x,
int x_length, int fs, [In][MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 5)] double[] time_axis,
[In][MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 5)] double[] f0, int f0_length, int fft_size, [In] D4COption option,
[In][Out] IntPtr[] aperiodicity);
