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85 lines
2.2 KiB
85 lines
2.2 KiB
/* GSL - Generic Sound Layer
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* Copyright (C) 1999, 2000-2002 Tim Janik
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GSL_OSCILLATOR_H__
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#define __GSL_OSCILLATOR_H__
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#include <gsl/gsldefs.h>
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#include <gsl/gslosctable.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/* --- structures --- */
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typedef struct
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{
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GslOscTable *table;
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guint exponential_fm : 1;
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gfloat fm_strength; /* linear: 0..1, exponential: n_octaves */
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gfloat self_fm_strength; /* 0..1 */
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gfloat phase; /* -0.5..+0.5 */
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gfloat cfreq; /* for ifreq == NULL */
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gfloat pulse_width; /* 0..1 */
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gfloat pulse_mod_strength; /* 0..0.5 */
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gint fine_tune; /* -100..+100 */
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} GslOscConfig;
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typedef struct
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{
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GslOscConfig config;
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guint last_mode;
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guint32 cur_pos, last_pos;
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gfloat last_sync_level;
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gdouble last_freq_level;
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gfloat last_pwm_level;
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GslOscWave wave;
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/* pwm */
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guint32 pwm_offset;
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gfloat pwm_max, pwm_center;
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} GslOscData;
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/* --- Oscillator --- */
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void gsl_osc_config (GslOscData *osc,
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GslOscConfig *config);
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void gsl_osc_process (GslOscData *osc,
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guint n_values,
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const gfloat *ifreq,
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const gfloat *imod,
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const gfloat *isync,
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gfloat *mono_out,
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gfloat *sync_out);
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void gsl_osc_process_pulse (GslOscData *osc,
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guint n_values,
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const gfloat *ifreq,
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const gfloat *imod,
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const gfloat *isync,
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const gfloat *ipwm,
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gfloat *mono_out,
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gfloat *sync_out);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GSL_OSCILLATOR_H__ */
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