89 lines
3.6 KiB
C++
89 lines
3.6 KiB
C++
/**************************************************************************/
|
|
/* audio_effect_hard_limiter.h */
|
|
/**************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/**************************************************************************/
|
|
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* 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. */
|
|
/**************************************************************************/
|
|
|
|
#ifndef AUDIO_EFFECT_HARD_LIMITER_H
|
|
#define AUDIO_EFFECT_HARD_LIMITER_H
|
|
|
|
#include "servers/audio/audio_effect.h"
|
|
|
|
class AudioEffectHardLimiter;
|
|
|
|
class AudioEffectHardLimiterInstance : public AudioEffectInstance {
|
|
GDCLASS(AudioEffectHardLimiterInstance, AudioEffectInstance);
|
|
friend class AudioEffectHardLimiter;
|
|
Ref<AudioEffectHardLimiter> base;
|
|
|
|
private:
|
|
int sample_cursor = 0;
|
|
|
|
float release_factor = 0;
|
|
float attack_factor = 0;
|
|
float gain = 1;
|
|
float gain_target = 1;
|
|
|
|
LocalVector<float> sample_buffer_left;
|
|
LocalVector<float> sample_buffer_right;
|
|
|
|
int gain_samples_to_store = 0;
|
|
int gain_bucket_cursor = 0;
|
|
int gain_bucket_size = 0;
|
|
LocalVector<float> gain_buckets;
|
|
|
|
public:
|
|
virtual void process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) override;
|
|
};
|
|
|
|
class AudioEffectHardLimiter : public AudioEffect {
|
|
GDCLASS(AudioEffectHardLimiter, AudioEffect);
|
|
|
|
friend class AudioEffectHardLimiterInstance;
|
|
float pre_gain = 0.0f;
|
|
float ceiling = -0.3f;
|
|
float sustain = 0.02f;
|
|
float release = 0.1f;
|
|
const float attack = 0.002;
|
|
|
|
protected:
|
|
static void _bind_methods();
|
|
|
|
public:
|
|
void set_ceiling_db(float p_ceiling);
|
|
float get_ceiling_db() const;
|
|
|
|
void set_release(float p_release);
|
|
float get_release() const;
|
|
|
|
void set_pre_gain_db(float p_pre_gain);
|
|
float get_pre_gain_db() const;
|
|
|
|
Ref<AudioEffectInstance> instantiate() override;
|
|
};
|
|
|
|
#endif // AUDIO_EFFECT_HARD_LIMITER_H
|