/* * This file is part of the Micro Python project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2023 Jeff Epler for Adafruit Industries * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include #include "py/runtime.h" #include "shared-module/synthio/Note.h" #include "shared-bindings/synthio/Note.h" #include "shared-bindings/synthio/__init__.h" static int32_t round_float_to_int(mp_float_t f) { return (int32_t)(f + MICROPY_FLOAT_CONST(0.5)); } mp_float_t common_hal_synthio_note_get_frequency(synthio_note_obj_t *self) { return self->frequency; } void common_hal_synthio_note_set_frequency(synthio_note_obj_t *self, mp_float_t value_in) { mp_float_t val = mp_arg_validate_float_range(value_in, 0, 32767, MP_QSTR_frequency); self->frequency = val; self->frequency_scaled = synthio_frequency_convert_float_to_scaled(val); } mp_float_t common_hal_synthio_note_get_amplitude(synthio_note_obj_t *self) { return self->amplitude; } void common_hal_synthio_note_set_amplitude(synthio_note_obj_t *self, mp_float_t value_in) { mp_float_t val = mp_arg_validate_float_range(value_in, 0, 1, MP_QSTR_amplitude); self->amplitude = val; self->amplitude_scaled = round_float_to_int(val * 32767); } mp_float_t common_hal_synthio_note_get_tremolo_depth(synthio_note_obj_t *self) { return self->tremolo_descr.amplitude; } void common_hal_synthio_note_set_tremolo_depth(synthio_note_obj_t *self, mp_float_t value_in) { mp_float_t val = mp_arg_validate_float_range(value_in, 0, 1, MP_QSTR_tremolo_depth); self->tremolo_descr.amplitude = val; self->tremolo_state.amplitude_scaled = round_float_to_int(val * 32767); } mp_float_t common_hal_synthio_note_get_tremolo_rate(synthio_note_obj_t *self) { return self->tremolo_descr.frequency; } void common_hal_synthio_note_set_tremolo_rate(synthio_note_obj_t *self, mp_float_t value_in) { mp_float_t val = mp_arg_validate_float_range(value_in, 0, 60, MP_QSTR_tremolo_rate); self->tremolo_descr.frequency = val; if (self->sample_rate != 0) { self->tremolo_state.dds = synthio_frequency_convert_float_to_dds(val, self->sample_rate); } } mp_float_t common_hal_synthio_note_get_vibrato_depth(synthio_note_obj_t *self) { return self->vibrato_descr.amplitude; } void common_hal_synthio_note_set_vibrato_depth(synthio_note_obj_t *self, mp_float_t value_in) { mp_float_t val = mp_arg_validate_float_range(value_in, 0, 1, MP_QSTR_vibrato_depth); self->vibrato_descr.amplitude = val; self->vibrato_state.amplitude_scaled = round_float_to_int(val * 32767); } mp_float_t common_hal_synthio_note_get_vibrato_rate(synthio_note_obj_t *self) { return self->vibrato_descr.frequency; } void common_hal_synthio_note_set_vibrato_rate(synthio_note_obj_t *self, mp_float_t value_in) { mp_float_t val = mp_arg_validate_float_range(value_in, 0, 60, MP_QSTR_vibrato_rate); self->vibrato_descr.frequency = val; if (self->sample_rate != 0) { self->vibrato_state.dds = synthio_frequency_convert_float_to_dds(val, self->sample_rate); } } mp_obj_t common_hal_synthio_note_get_envelope_obj(synthio_note_obj_t *self) { return self->envelope_obj; } void common_hal_synthio_note_set_envelope(synthio_note_obj_t *self, mp_obj_t envelope_in) { if (envelope_in != mp_const_none) { mp_arg_validate_type(envelope_in, (mp_obj_type_t *)&synthio_envelope_type_obj, MP_QSTR_envelope); } self->envelope_obj = envelope_in; } mp_obj_t common_hal_synthio_note_get_waveform_obj(synthio_note_obj_t *self) { return self->waveform_obj; } void common_hal_synthio_note_set_waveform(synthio_note_obj_t *self, mp_obj_t waveform_in) { if (waveform_in == mp_const_none) { memset(&self->waveform_buf, 0, sizeof(self->waveform_buf)); } else { mp_buffer_info_t bufinfo_waveform; synthio_synth_parse_waveform(&bufinfo_waveform, waveform_in); self->waveform_buf = bufinfo_waveform; } self->waveform_obj = waveform_in; } void synthio_note_recalculate(synthio_note_obj_t *self, int32_t sample_rate) { if (sample_rate == self->sample_rate) { return; } self->sample_rate = sample_rate; if (self->envelope_obj != mp_const_none) { synthio_envelope_definition_set(&self->envelope_def, self->envelope_obj, sample_rate); } synthio_lfo_set(&self->tremolo_state, &self->tremolo_descr, sample_rate); self->tremolo_state.offset_scaled = 32768 - self->tremolo_state.amplitude_scaled; synthio_lfo_set(&self->vibrato_state, &self->vibrato_descr, sample_rate); self->vibrato_state.offset_scaled = 32768; } void synthio_note_start(synthio_note_obj_t *self, int32_t sample_rate) { synthio_note_recalculate(self, sample_rate); } uint32_t synthio_note_envelope(synthio_note_obj_t *self) { return self->amplitude_scaled; } uint32_t synthio_note_step(synthio_note_obj_t *self, int32_t sample_rate, int16_t dur, uint16_t *loudness) { int tremolo_value = synthio_lfo_step(&self->tremolo_state, dur); int vibrato_value = synthio_lfo_step(&self->vibrato_state, dur); *loudness = (*loudness * tremolo_value) >> 15; uint32_t frequency_scaled = ((uint64_t)self->frequency_scaled * vibrato_value) >> 15; return frequency_scaled; }