82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
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* Brickworks
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*
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* Copyright (C) 2023, 2024 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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* along with Brickworks. If not, see <http://www.gnu.org/licenses/>.
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*
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* File author: Stefano D'Angelo
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*/
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#include "common.h"
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#include <bw_chorus.h>
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typedef struct plugin {
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bw_chorus_coeffs chorus_coeffs;
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bw_chorus_state chorus_state;
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} plugin;
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static void plugin_init(plugin *instance, plugin_callbacks *cbs) {
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(void)cbs;
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bw_chorus_init(&instance->chorus_coeffs, 0.002f);
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bw_chorus_set_delay(&instance->chorus_coeffs, 0.001f);
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// values taken from Dattorro's paper
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bw_chorus_set_coeff_x(&instance->chorus_coeffs, 0.7071f);
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bw_chorus_set_coeff_mod(&instance->chorus_coeffs, 0.7071f);
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}
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static void plugin_fini(plugin *instance) {
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(void)instance;
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}
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static void plugin_set_sample_rate(plugin *instance, float sample_rate) {
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bw_chorus_set_sample_rate(&instance->chorus_coeffs, sample_rate);
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}
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static size_t plugin_mem_req(plugin *instance) {
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return bw_chorus_mem_req(&instance->chorus_coeffs);
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}
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static void plugin_mem_set(plugin *instance, void *mem) {
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bw_chorus_mem_set(&instance->chorus_coeffs, &instance->chorus_state, mem);
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}
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static void plugin_reset(plugin *instance) {
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bw_chorus_reset_coeffs(&instance->chorus_coeffs);
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bw_chorus_reset_state(&instance->chorus_coeffs, &instance->chorus_state, 0.f);
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}
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static void plugin_set_parameter(plugin *instance, size_t index, float value) {
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switch (index) {
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case plugin_parameter_rate:
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bw_chorus_set_rate(&instance->chorus_coeffs, value);
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break;
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case plugin_parameter_amount:
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bw_chorus_set_amount(&instance->chorus_coeffs, (0.01f * 0.001f) * value);
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break;
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case plugin_parameter_feedback:
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bw_chorus_set_coeff_fb(&instance->chorus_coeffs, 0.01f * value);
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break;
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}
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}
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static float plugin_get_parameter(plugin *instance, size_t index) {
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(void)instance;
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(void)index;
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return 0.f;
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}
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static void plugin_process(plugin *instance, const float **inputs, float **outputs, size_t n_samples) {
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bw_chorus_process(&instance->chorus_coeffs, &instance->chorus_state, inputs[0], outputs[0], n_samples);
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}
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