oscillator.h

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#ifndef _SSTVENC_OSCILLATOR_H
#define _SSTVENC_OSCILLATOR_H
 
/*
 * © Stuart Longland VK4MSL
 * SPDX-License-Identifier: MIT
 */
 
#include <stdint.h>
 
struct sstvenc_oscillator {
        double   amplitude;
        double   offset;
        double   output;
        uint32_t sample_rate;
        uint32_t phase;
        uint32_t phase_inc;
};
 
double sstvenc_osc_get_frequency(const struct sstvenc_oscillator* const osc);
 
void   sstvenc_osc_set_frequency(struct sstvenc_oscillator* const osc,
                                 double                           frequency);
 
void sstvenc_osc_init(struct sstvenc_oscillator* const osc, double amplitude,
                      double frequency, double offset, uint32_t sample_rate);
 
void sstvenc_osc_compute(struct sstvenc_oscillator* const osc);
 
#endif