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/* libxtract feature extraction library
 *  
 * Copyright (C) 2006 Jamie Bullock
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
 * USA.
 */

#ifndef XTRACT_SCALAR_H
#define XTRACT_SCALAR_H

#ifdef __cplusplus
extern "C" {
#endif

int xtract_mean(const float *data, const int N, const void *argv, float *result);

int xtract_variance(const float *data, const int N, const void *argv, float *result);

int xtract_standard_deviation(const float *data, const int N, const void *argv, float *result);

int xtract_average_deviation(const float *data, const int N, const void *argv, float *result);

int xtract_skewness(const float *data, const int N, const void *argv,  float *result);

int xtract_kurtosis(const float *data, const int N, const void *argv,  float *result);

int xtract_spectral_mean(const float *data, const int N, const void *argv, float *result);

int xtract_spectral_variance(const float *data, const int N, const void *argv, float *result);

int xtract_spectral_standard_deviation(const float *data, const int N, const void *argv, float *result);

int xtract_spectral_average_deviation(const float *data, const int N, const void *argv, float *result);

int xtract_spectral_skewness(const float *data, const int N, const void *argv,  float *result);

int xtract_spectral_kurtosis(const float *data, const int N, const void *argv,  float *result);

int xtract_spectral_centroid(const float *data, const int N, const void *argv,  float *result);

int xtract_irregularity_k(const float *data, const int N, const void *argv, float *result);

int xtract_irregularity_j(const float *data, const int N, const void *argv, float *result);

int xtract_tristimulus_1(const float *data, const int N, const void *argv, float *result);
int xtract_tristimulus_2(const float *data, const int N, const void *argv, float *result);
int xtract_tristimulus_3(const float *data, const int N, const void *argv, float *result);

int xtract_smoothness(const float *data, const int N, const void *argv, float *result);

int xtract_spread(const float *data, const int N, const void *argv, float *result);

/* Zero crossing rate */

int xtract_zcr(const float *data, const int N, const void *argv, float *result);

int xtract_rolloff(const float *data, const int N, const void *argv, float *result);

int xtract_loudness(const float *data, const int N, const void *argv, float *result);

int xtract_flatness(const float *data, const int N, const void *argv, float *result);


int xtract_tonality(const float *data, const int N, const void *argv, float *result);

int xtract_noisiness(const float *data, const int N, const void *argv, float *result);

int xtract_rms_amplitude(const float *data, const int N, const void *argv, float *result);

int xtract_spectral_inharmonicity(const float *data, const int N, const void *argv, float *result);

int xtract_crest(const float *data, const int N, const void *argv, float *result);
    
int xtract_power(const float *data, const int N, const void *argv, float *result);
    
/* Odd to even harmonic ratio */
int xtract_odd_even_ratio(const float *data, const int N, const void *argv, float *result);

int xtract_sharpness(const float *data, const int N, const void *argv, float *result);

int xtract_spectral_slope(const float *data, const int N, const void *argv, float *result);

int xtract_lowest_value(const float *data, const int N, const void *argv, float *result);

int xtract_highest_value(const float *data, const int N, const void *argv, float *result);

int xtract_sum(const float *data, const int N, const void *argv, float *result);

int xtract_hps(const float *data, const int N, const void *argv, float *result);

int xtract_f0(const float *data, const int N, const void *argv, float *result);

int xtract_failsafe_f0(const float *data, const int N, const void *argv, float *result);

int xtract_nonzero_count(const float *data, const int N, const void *argv, float *result);

#ifdef __cplusplus
}
#endif

#endif

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