annotate src/vamp-sdk/FFTimpl.cpp @ 493:25e023bad200

Choose another method (which should actually work) to override linkage for KissFFT

// Override C linkage for KissFFT headers. So long as we have already
// included all of the other (system etc) headers KissFFT depends on,
// this should work out OK
#define KISSFFT_USE_CPP_LINKAGE 1

namespace Kiss {

#undef KISS_FFT_H
#undef KISS_FTR_H
#undef KISS_FFT__GUTS_H
#undef FIXED_POINT
#undef USE_SIMD
#undef kiss_fft_scalar

#ifdef SINGLE_PRECISION_FFT
#pragma message("Using single-precision FFTs")
typedef float kiss_fft_scalar;
#define kiss_fft_scalar float
#else
typedef double kiss_fft_scalar;
#define kiss_fft_scalar double
#endif

inline void free(void *ptr) { ::free(ptr); }
#include "ext/kiss_fft.c"
#include "ext/kiss_fftr.c"

#undef kiss_fft_scalar // leaving only the namespaced typedef

}

// Check that this worked, i.e. that we have our own suitably
// hacked KissFFT header which set this after making the
// appropriate change
#ifndef KISSFFT_USED_CPP_LINKAGE
#error "KissFFT header lacks specific linkage adjustment needed for Vamp SDK"
#endif