30 lines
1.2 KiB
C
30 lines
1.2 KiB
C
// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2023 Jeff Epler for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#pragma once
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#include "shared-module/synthio/block.h"
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typedef struct synthio_lfo_obj {
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synthio_block_base_t base;
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bool once, interpolate;
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synthio_block_slot_t rate, scale, offset, phase_offset;
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mp_float_t accum;
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mp_obj_t waveform_obj;
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mp_buffer_info_t waveform_bufinfo;
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} synthio_lfo_obj_t;
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// Update the value inside the lfo slot if the value is an LFO, returning the new value
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mp_float_t synthio_block_slot_get(synthio_block_slot_t *block_slot);
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// the same, but the output is constrained to be between lo and hi
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mp_float_t synthio_block_slot_get_limited(synthio_block_slot_t *block_slot, mp_float_t lo, mp_float_t hi);
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// the same, but the output is constrained to be between lo and hi and converted to an integer with 15 fractional bits
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int32_t synthio_block_slot_get_scaled(synthio_block_slot_t *block_slot, mp_float_t lo, mp_float_t hi);
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// Assign an object (which may be a float or a synthio_block_obj_t) to an block slot
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void synthio_block_assign_slot(mp_obj_t obj, synthio_block_slot_t *block_slot, qstr arg_name);
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