diff options
Diffstat (limited to 'xtract')
| -rw-r--r-- | xtract/libxtract.h | 1 | ||||
| -rw-r--r-- | xtract/xtract_scalar.h | 14 |
2 files changed, 15 insertions, 0 deletions
diff --git a/xtract/libxtract.h b/xtract/libxtract.h index 1f4a787..8c20980 100644 --- a/xtract/libxtract.h +++ b/xtract/libxtract.h @@ -172,6 +172,7 @@ enum xtract_return_codes_ { XTRACT_MALLOC_FAILED, XTRACT_BAD_ARGV, XTRACT_BAD_VECTOR_SIZE, + XTRACT_BAD_STATE, XTRACT_DENORMAL_FOUND, XTRACT_NO_RESULT, /* This usually occurs when the correct calculation cannot take place because required data is missing or would result in a NaN or infinity/-infinity. Under these curcumstances 0.f is usually given by *result */ XTRACT_FEATURE_NOT_IMPLEMENTED, diff --git a/xtract/xtract_scalar.h b/xtract/xtract_scalar.h index 4e39fd9..1c79cc9 100644 --- a/xtract/xtract_scalar.h +++ b/xtract/xtract_scalar.h @@ -457,6 +457,20 @@ int xtract_midicent(const double *data, const int N, const void *argv, double *r */ int xtract_nonzero_count(const double *data, const int N, const void *argv, double *result); +/** + * \brief Return XTRACT_SUCCESS if the 'current' value is considered a peak + * + * @param data a pointer to an array containing time series as provided by *result from xtract_last_n() where the Nth value is considered the 'current' value + * @param N an integer representing the number of elements in the time series + * @param argv a pointer to a double representing the threshold, whereby the current value will be considered a peak if it is above the average of the last N values (*data) by the threshold + * @param result a pointer to a copy of the current value if the current value is considered a peak + * + * + * @return XTRACT_SUCCESS if a peak was found or XTRACT_NO_RESULT if not + */ +int xtract_peak(const double *data, const int N, const void *argv, double *result); + + /** @} */ #ifdef __cplusplus |