godot/modules/chibi/cp_tables.h

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/*  cp_tables.h                                                          */
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
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#ifndef CPTABLES_H
#define CPTABLES_H

#include "cp_config.h"

/**conversion CPTables/functions
  *@author Juan Linietsky
  */

/******************************
 CPTables.h
 --------

CPTables methods for miscelaneous
conversion utilities
********************************/

class CPTables {
public:
	enum { OCTAVE = 12 };

	static uint16_t old_period_table[OCTAVE * 2];
	static uint16_t log_table[104];
	static int32_t linear_period_to_freq_tab[768];

	static int32_t get_old_period(uint16_t note, int32_t speed);
	static int32_t get_amiga_period(uint16_t note, int32_t fine);
	static int32_t get_linear_period(uint16_t note, int32_t fine);
	static int32_t get_linear_frequency(int32_t period);
	static int32_t get_old_frequency(int32_t period);
	static int32_t get_log_period(uint16_t note, int32_t p_c5freq);

	CPTables();
	~CPTables();
};

#endif