b5334d14f7
Happy new year to the wonderful Godot community!
2020 has been a tough year for most of us personally, but a good year for
Godot development nonetheless with a huge amount of work done towards Godot
4.0 and great improvements backported to the long-lived 3.2 branch.
We've had close to 400 contributors to engine code this year, authoring near
7,000 commit! (And that's only for the `master` branch and for the engine code,
there's a lot more when counting docs, demos and other first-party repos.)
Here's to a great year 2021 for all Godot users 🎆
173 lines
6.2 KiB
C++
173 lines
6.2 KiB
C++
/*************************************************************************/
|
|
/* audio_effect_filter.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* */
|
|
/* 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 "audio_effect_filter.h"
|
|
#include "servers/audio_server.h"
|
|
|
|
template <int S>
|
|
void AudioEffectFilterInstance::_process_filter(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) {
|
|
for (int i = 0; i < p_frame_count; i++) {
|
|
float f = p_src_frames[i].l;
|
|
filter_process[0][0].process_one(f);
|
|
if (S > 1) {
|
|
filter_process[0][1].process_one(f);
|
|
}
|
|
if (S > 2) {
|
|
filter_process[0][2].process_one(f);
|
|
}
|
|
if (S > 3) {
|
|
filter_process[0][3].process_one(f);
|
|
}
|
|
|
|
p_dst_frames[i].l = f;
|
|
}
|
|
|
|
for (int i = 0; i < p_frame_count; i++) {
|
|
float f = p_src_frames[i].r;
|
|
filter_process[1][0].process_one(f);
|
|
if (S > 1) {
|
|
filter_process[1][1].process_one(f);
|
|
}
|
|
if (S > 2) {
|
|
filter_process[1][2].process_one(f);
|
|
}
|
|
if (S > 3) {
|
|
filter_process[1][3].process_one(f);
|
|
}
|
|
|
|
p_dst_frames[i].r = f;
|
|
}
|
|
}
|
|
|
|
void AudioEffectFilterInstance::process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) {
|
|
filter.set_cutoff(base->cutoff);
|
|
filter.set_gain(base->gain);
|
|
filter.set_resonance(base->resonance);
|
|
filter.set_mode(base->mode);
|
|
int stages = int(base->db) + 1;
|
|
filter.set_stages(stages);
|
|
filter.set_sampling_rate(AudioServer::get_singleton()->get_mix_rate());
|
|
|
|
for (int i = 0; i < 2; i++) {
|
|
for (int j = 0; j < 4; j++) {
|
|
filter_process[i][j].update_coeffs();
|
|
}
|
|
}
|
|
|
|
if (stages == 1) {
|
|
_process_filter<1>(p_src_frames, p_dst_frames, p_frame_count);
|
|
} else if (stages == 2) {
|
|
_process_filter<2>(p_src_frames, p_dst_frames, p_frame_count);
|
|
} else if (stages == 3) {
|
|
_process_filter<3>(p_src_frames, p_dst_frames, p_frame_count);
|
|
} else if (stages == 4) {
|
|
_process_filter<4>(p_src_frames, p_dst_frames, p_frame_count);
|
|
}
|
|
}
|
|
|
|
AudioEffectFilterInstance::AudioEffectFilterInstance() {
|
|
for (int i = 0; i < 2; i++) {
|
|
for (int j = 0; j < 4; j++) {
|
|
filter_process[i][j].set_filter(&filter);
|
|
}
|
|
}
|
|
}
|
|
|
|
Ref<AudioEffectInstance> AudioEffectFilter::instance() {
|
|
Ref<AudioEffectFilterInstance> ins;
|
|
ins.instance();
|
|
ins->base = Ref<AudioEffectFilter>(this);
|
|
|
|
return ins;
|
|
}
|
|
|
|
void AudioEffectFilter::set_cutoff(float p_freq) {
|
|
cutoff = p_freq;
|
|
}
|
|
|
|
float AudioEffectFilter::get_cutoff() const {
|
|
return cutoff;
|
|
}
|
|
|
|
void AudioEffectFilter::set_resonance(float p_amount) {
|
|
resonance = p_amount;
|
|
}
|
|
|
|
float AudioEffectFilter::get_resonance() const {
|
|
return resonance;
|
|
}
|
|
|
|
void AudioEffectFilter::set_gain(float p_amount) {
|
|
gain = p_amount;
|
|
}
|
|
|
|
float AudioEffectFilter::get_gain() const {
|
|
return gain;
|
|
}
|
|
|
|
void AudioEffectFilter::set_db(FilterDB p_db) {
|
|
db = p_db;
|
|
}
|
|
|
|
AudioEffectFilter::FilterDB AudioEffectFilter::get_db() const {
|
|
return db;
|
|
}
|
|
|
|
void AudioEffectFilter::_bind_methods() {
|
|
ClassDB::bind_method(D_METHOD("set_cutoff", "freq"), &AudioEffectFilter::set_cutoff);
|
|
ClassDB::bind_method(D_METHOD("get_cutoff"), &AudioEffectFilter::get_cutoff);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_resonance", "amount"), &AudioEffectFilter::set_resonance);
|
|
ClassDB::bind_method(D_METHOD("get_resonance"), &AudioEffectFilter::get_resonance);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_gain", "amount"), &AudioEffectFilter::set_gain);
|
|
ClassDB::bind_method(D_METHOD("get_gain"), &AudioEffectFilter::get_gain);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_db", "amount"), &AudioEffectFilter::set_db);
|
|
ClassDB::bind_method(D_METHOD("get_db"), &AudioEffectFilter::get_db);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "cutoff_hz", PROPERTY_HINT_RANGE, "1,20500,1"), "set_cutoff", "get_cutoff");
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "resonance", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_resonance", "get_resonance");
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "gain", PROPERTY_HINT_RANGE, "0,4,0.01"), "set_gain", "get_gain");
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "db", PROPERTY_HINT_ENUM, "6 dB,12 dB,18 dB,24 dB"), "set_db", "get_db");
|
|
|
|
BIND_ENUM_CONSTANT(FILTER_6DB);
|
|
BIND_ENUM_CONSTANT(FILTER_12DB);
|
|
BIND_ENUM_CONSTANT(FILTER_18DB);
|
|
BIND_ENUM_CONSTANT(FILTER_24DB);
|
|
}
|
|
|
|
AudioEffectFilter::AudioEffectFilter(AudioFilterSW::Mode p_mode) {
|
|
mode = p_mode;
|
|
cutoff = 2000;
|
|
resonance = 0.5;
|
|
gain = 1.0;
|
|
db = FILTER_6DB;
|
|
}
|