diff options
Diffstat (limited to 'xtract/xtract_scalar.h')
| -rw-r--r-- | xtract/xtract_scalar.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/xtract/xtract_scalar.h b/xtract/xtract_scalar.h index e18aea6..4e39fd9 100644 --- a/xtract/xtract_scalar.h +++ b/xtract/xtract_scalar.h @@ -434,6 +434,19 @@ int xtract_failsafe_f0(const double *data, const int N, const void *argv, double */ int xtract_wavelet_f0(const double *data, const int N, const void *argv, double *result); + +/** \brief Convenience function to convert a frequency in Hertz to a "pitch" value in MIDI cents + * + * \param *data: not used + * \param N: not used + * \param *argv: a pointer to a double-precision floating point value representing a frequency in Hertz + * \param *result: a pointer to a double-precision floating point value representing a "pitch" in MIDI cents + * \return if *argv value causes a *result within the range 0..127, XTRACT_SUCCESS will be returned, otherwise XTRACT_ARGUMENT_ERROR + * + */ +int xtract_midicent(const double *data, const int N, const void *argv, double *result); + + /** \brief Extract the number of non-zero elements in an input vector * * \param *data: a pointer to the first element in an array of doubles |