87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
/*
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* Brickworks
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*
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* Copyright (C) 2022 Orastron Srl unipersonale
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*
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* Brickworks is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3 of the License.
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*
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* Brickworks 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 General Public License
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*
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* File author: Stefano D'Angelo
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*/
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/*!
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* module_type {{{ dsp }}}
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* version {{{ 0.2.0 }}}
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* requires {{{ bw_config bw_common bw_math }}}
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* description {{{
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* Sinusoidal oscillator waveshaper.
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*
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* This module only consists of signal processing functions.
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* }}}
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* changelog {{{
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* <ul>
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* <li>Version <strong>0.2.0</strong>:
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* <ul>
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* <li>Refactored API.</li>
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* </ul>
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* </li>
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* <li>Version <strong>0.1.0</strong>:
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* <ul>
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* <li>First release.</li>
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* </ul>
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* </li>
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* </ul>
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* }}}
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*/
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#ifndef _BW_OSC_SIN_H
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#define _BW_OSC_SIN_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <bw_common.h>
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static inline float bw_osc_sin_process1(float x);
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/*! api {{{
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* #### bw_osc_sin_process()
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* ```>>> */
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static inline void bw_osc_sin_process(const float *x, float* y, int n_samples);
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/*! <<<```
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* Turns `n_samples` samples of the normalized phase signal in the `x` buffer
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* into a sinusoidal signal, filling the corresponding `n_samples` in the
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* output buffer `y`.
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* }}} */
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/*** Implementation ***/
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/* WARNING: This part of the file is not part of the public API. Its content may
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* change at any time in future versions. Please, do not use it directly. */
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#include <bw_math.h>
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static inline float bw_osc_sin_process1(float x) {
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return bw_sinf_3(6.283185307179586f * x);
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}
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static inline void bw_osc_sin_process(const float *x, float* y, int n_samples) {
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for (int i = 0; i < n_samples; i++)
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y[i] = bw_osc_sin_process1(x[i]);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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