1/**************************************************************************/
2/* audio_effect_panner.cpp */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
14/* without limitation the rights to use, copy, modify, merge, publish, */
15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
18/* */
19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
24/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
25/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
26/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
27/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#include "audio_effect_panner.h"
32
33void AudioEffectPannerInstance::process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) {
34 float lvol = CLAMP(1.0 - base->pan, 0, 1);
35 float rvol = CLAMP(1.0 + base->pan, 0, 1);
36
37 for (int i = 0; i < p_frame_count; i++) {
38 p_dst_frames[i].l = p_src_frames[i].l * lvol + p_src_frames[i].r * (1.0 - rvol);
39 p_dst_frames[i].r = p_src_frames[i].r * rvol + p_src_frames[i].l * (1.0 - lvol);
40 }
41}
42
43Ref<AudioEffectInstance> AudioEffectPanner::instantiate() {
44 Ref<AudioEffectPannerInstance> ins;
45 ins.instantiate();
46 ins->base = Ref<AudioEffectPanner>(this);
47 return ins;
48}
49
50void AudioEffectPanner::set_pan(float p_cpanume) {
51 pan = p_cpanume;
52}
53
54float AudioEffectPanner::get_pan() const {
55 return pan;
56}
57
58void AudioEffectPanner::_bind_methods() {
59 ClassDB::bind_method(D_METHOD("set_pan", "cpanume"), &AudioEffectPanner::set_pan);
60 ClassDB::bind_method(D_METHOD("get_pan"), &AudioEffectPanner::get_pan);
61
62 ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "pan", PROPERTY_HINT_RANGE, "-1,1,0.01"), "set_pan", "get_pan");
63}
64
65AudioEffectPanner::AudioEffectPanner() {
66 pan = 0;
67}
68