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fixed-point: changed find_spectral_pitch() to use single-precision (16-bit) FFT.

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This involved adding kfft_single.[ch] that redefines kiss_fft a second time
with a different prefix. All this is still a bit of a mess now. The mask
had to be converted to 16-bit input, but we're still using floats to apply it.
This commit is contained in:
Jean-Marc Valin 2008-03-05 17:20:30 +11:00
parent 4024444811
commit f93747c44a
12 changed files with 166 additions and 28 deletions
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4
libcelt/kiss_fft.h
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@ -36,22 +36,24 @@ extern "C" {
#ifdef DOUBLE_PRECISION
# define kiss_fft_scalar celt_int32_t
# define kiss_twiddle_scalar celt_int32_t
# define KF_SUFFIX _celt_double
#else
# define kiss_fft_scalar celt_int16_t
# define kiss_twiddle_scalar celt_int16_t
# define KF_SUFFIX _celt_single
#endif
#else
# ifndef kiss_fft_scalar
/* default is float */
# define kiss_fft_scalar float
# define kiss_twiddle_scalar float
# define KF_SUFFIX _celt_single
# endif
#endif
/* This adds a suffix to all the kiss_fft functions so we
can easily link with more than one copy of the fft */
#define KF_SUFFIX _celt_single
#define CAT_SUFFIX(a,b) a ## b
#define SUF(a,b) CAT_SUFFIX(a, b)