/*
 * Copyright (c) 2013, Ismael Gomez-Miguelez <gomezi@tcd.ie>.
 * This file is part of OSLD-lib (http://https://github.com/ismagom/osld-lib)
 *
 * OSLD-lib is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OSLD-lib 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with OSLD-lib.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef NCO_
#define NCO_

#include <complex.h>

typedef struct {
	int size;
	float *cost;
	float *sint;
}nco_t;

void nco_init(nco_t *nco, int size);
void nco_destroy(nco_t *nco);

float nco_sin(nco_t *nco, float phase);
float nco_cos(nco_t *nco, float phase);
void nco_sincos(nco_t *nco, float phase, float *sin, float *cos);
_Complex float nco_cexp(nco_t *nco, float arg);

void nco_sin_f(nco_t *nco, float *x, float freq, int len);
void nco_cos_f(nco_t *nco, float *x, float freq, int len);
void nco_cexp_f(nco_t *nco, _Complex float *x, float freq, int len);
void nco_cexp_f_direct(_Complex float *x, float freq, int len);

#endif