108 lines
3.9 KiB
C++
108 lines
3.9 KiB
C++
/*************************************************************************/
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/* audio_effect_spectrum_analyzer.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef AUDIO_EFFECT_SPECTRUM_ANALYZER_H
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#define AUDIO_EFFECT_SPECTRUM_ANALYZER_H
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#include "servers/audio/audio_effect.h"
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class AudioEffectSpectrumAnalyzer;
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class AudioEffectSpectrumAnalyzerInstance : public AudioEffectInstance {
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GDCLASS(AudioEffectSpectrumAnalyzerInstance, AudioEffectInstance);
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public:
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enum MagnitudeMode {
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MAGNITUDE_AVERAGE,
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MAGNITUDE_MAX,
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};
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private:
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friend class AudioEffectSpectrumAnalyzer;
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Ref<AudioEffectSpectrumAnalyzer> base;
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Vector<Vector<AudioFrame> > fft_history;
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Vector<float> temporal_fft;
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int temporal_fft_pos;
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int fft_size;
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int fft_count;
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int fft_pos;
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float mix_rate;
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uint64_t last_fft_time;
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protected:
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static void _bind_methods();
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public:
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virtual void process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count);
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Vector2 get_magnitude_for_frequency_range(float p_begin, float p_end, MagnitudeMode p_mode = MAGNITUDE_MAX) const;
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};
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VARIANT_ENUM_CAST(AudioEffectSpectrumAnalyzerInstance::MagnitudeMode)
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class AudioEffectSpectrumAnalyzer : public AudioEffect {
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GDCLASS(AudioEffectSpectrumAnalyzer, AudioEffect);
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public:
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enum FFT_Size {
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FFT_SIZE_256,
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FFT_SIZE_512,
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FFT_SIZE_1024,
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FFT_SIZE_2048,
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FFT_SIZE_4096,
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FFT_SIZE_MAX
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};
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public:
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friend class AudioEffectSpectrumAnalyzerInstance;
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float buffer_length;
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float tapback_pos;
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FFT_Size fft_size;
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protected:
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static void _bind_methods();
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public:
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Ref<AudioEffectInstance> instance();
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void set_buffer_length(float p_seconds);
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float get_buffer_length() const;
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void set_tap_back_pos(float p_seconds);
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float get_tap_back_pos() const;
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void set_fft_size(FFT_Size);
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FFT_Size get_fft_size() const;
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AudioEffectSpectrumAnalyzer();
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};
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VARIANT_ENUM_CAST(AudioEffectSpectrumAnalyzer::FFT_Size);
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#endif // AUDIO_EFFECT_SPECTRUM_ANALYZER_H
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