src/cshellsynth/key.h

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/*
 * Copyright 2010 Evan Buswell
 * 
 * This file is part of Cshellsynth.
 * 
 * Cshellsynth 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.
 * 
 * Cshellsynth 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 Cshellsynth.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef CSHELLSYNTH_KEY_H
#define CSHELLSYNTH_KEY_H 1

#include <jack/jack.h>
#include <cshellsynth/atomic-types.h>
#include <cshellsynth/jclient.h>

typedef struct cs_key_tuning_struct {
    size_t tuning_length; 
    const double *tuning; 
} cs_key_tuning_t;

typedef struct cs_key_struct {
    jack_client_t *client;
    jack_port_t *note_port; 
    atomic_float_t note; 
    jack_port_t *root_port; 
    atomic_float_t root; 
    jack_port_t *freq_port; 
    atomic_ptr_t tuning; 
    atomic_t tuning_sync; 
} cs_key_t;

int cs_key_destroy(cs_key_t *cs_key);

int cs_key_init(cs_key_t *self, const char *client_name, jack_options_t flags, char *server_name);

void cs_key_set_root(cs_key_t *self, float root);

int cs_key_set_tuning(cs_key_t *self, const double *tuning, size_t tuning_length);

float cs_key_note2freq(cs_key_t *self, float note);

void cs_key_set_note(cs_key_t *self, float note);

#define CS_A 220.0

#define CS_A_SHARP 233.081880759045

#define CS_B_FLAT 233.081880759045

#define CS_B 246.941650628062

#define CS_C_FLAT 246.941650628062

#define CS_C 261.625565300599

#define CS_B_SHARP 261.625565300599

#define CS_C_SHARP 277.182630976872

#define CS_D_FLAT 277.182630976872

#define CS_D 293.664767917408

#define CS_D_SHARP 311.126983722081

#define CS_E_FLAT 311.126983722081

#define CS_E 329.62755691287

#define CS_F_FLAT 329.62755691287

#define CS_F 349.228231433004

#define CS_E_SHARP 349.228231433004

#define CS_F_SHARP 369.994422711634

#define CS_G_FLAT 369.994422711634

#define CS_G 391.995435981749

#define CS_G_SHARP 415.304697579945

#define CS_A_FLAT 415.304697579945

extern const double CS_MAJOR_TUNING[];
#define CS_MAJOR_TUNING_LENGTH 7

extern const double CS_MINOR_TUNING[];
#define CS_MINOR_TUNING_LENGTH 7

extern const double CS_PYTHAGOREAN_TUNING[];
#define CS_PYTHAGOREAN_TUNING_LENGTH 12

#define CS_EQUAL_TUNING ((double *) -1)

#define CS_EQUAL_TUNING_LENGTH 12

#endif

---