68 lines
3 KiB
C++
68 lines
3 KiB
C++
/*************************************************************************/
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/* cp_tables.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef CPTABLES_H
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#define CPTABLES_H
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#include "cp_config.h"
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/**conversion CPTables/functions
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*@author Juan Linietsky
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*/
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/******************************
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CPTables.h
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--------
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CPTables methods for miscelaneous
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conversion utilities
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********************************/
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class CPTables {
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public:
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enum { OCTAVE = 12 };
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static uint16_t old_period_table[OCTAVE * 2];
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static uint16_t log_table[104];
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static int32_t linear_period_to_freq_tab[768];
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static int32_t get_old_period(uint16_t note, int32_t speed);
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static int32_t get_amiga_period(uint16_t note, int32_t fine);
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static int32_t get_linear_period(uint16_t note, int32_t fine);
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static int32_t get_linear_frequency(int32_t period);
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static int32_t get_old_frequency(int32_t period);
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static int32_t get_log_period(uint16_t note, int32_t p_c5freq);
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CPTables();
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~CPTables();
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};
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#endif
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