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/* GSL - Generic Sound Layer
* Copyright (C) 1999, 2000-2002 Tim Janik
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This library 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 Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GSL_OSCILLATOR_H__
#define __GSL_OSCILLATOR_H__
#include <gsl/gsldefs.h>
#include <gsl/gslosctable.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* --- structures --- */
typedef struct
{
GslOscTable *table;
guint exponential_fm : 1;
gfloat fm_strength; /* linear: 0..1, exponential: n_octaves */
gfloat self_fm_strength; /* 0..1 */
gfloat phase; /* -0.5..+0.5 */
gfloat cfreq; /* for ifreq == NULL */
gfloat pulse_width; /* 0..1 */
gfloat pulse_mod_strength; /* 0..0.5 */
gint fine_tune; /* -100..+100 */
} GslOscConfig;
typedef struct
{
GslOscConfig config;
guint last_mode;
guint32 cur_pos, last_pos;
gfloat last_sync_level;
gdouble last_freq_level;
gfloat last_pwm_level;
GslOscWave wave;
/* pwm */
guint32 pwm_offset;
gfloat pwm_max, pwm_center;
} GslOscData;
/* --- Oscillator --- */
void gsl_osc_config (GslOscData *osc,
GslOscConfig *config);
void gsl_osc_process (GslOscData *osc,
guint n_values,
const gfloat *ifreq,
const gfloat *imod,
const gfloat *isync,
gfloat *mono_out,
gfloat *sync_out);
void gsl_osc_process_pulse (GslOscData *osc,
guint n_values,
const gfloat *ifreq,
const gfloat *imod,
const gfloat *isync,
const gfloat *ipwm,
gfloat *mono_out,
gfloat *sync_out);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GSL_OSCILLATOR_H__ */
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