55 lines
2.1 KiB
C
55 lines
2.1 KiB
C
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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2023 Jeff Epler for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* 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, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#pragma once
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#include "shared-module/synthio/__init__.h"
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typedef struct synthio_note_obj {
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mp_obj_base_t base;
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mp_float_t frequency;
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mp_float_t amplitude;
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mp_obj_t waveform_obj, envelope_obj;
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int32_t sample_rate;
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int32_t phase;
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int32_t frequency_scaled;
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int32_t amplitude_scaled;
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synthio_lfo_descr_t tremolo_descr, vibrato_descr;
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synthio_lfo_state_t tremolo_state, vibrato_state;
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mp_buffer_info_t waveform_buf;
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synthio_envelope_definition_t envelope_def;
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} synthio_note_obj_t;
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void synthio_note_recalculate(synthio_note_obj_t *self, int32_t sample_rate);
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uint32_t synthio_note_step(synthio_note_obj_t *self, int32_t sample_rate, int16_t dur, uint16_t *loudness);
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void synthio_note_start(synthio_note_obj_t *self, int32_t sample_rate);
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bool synthio_note_playing(synthio_note_obj_t *self);
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uint32_t synthio_note_envelope(synthio_note_obj_t *self);
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