mirror of
https://github.com/LMMS/lmms.git
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159 lines
3.3 KiB
C++
Executable File
159 lines
3.3 KiB
C++
Executable File
/*
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* Compressor.h
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*
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* Copyright (c) 2020 Lost Robot <r94231@gmail.com>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program 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 GNU
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* 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
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef COMPRESSOR_H
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#define COMPRESSOR_H
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#include "CompressorControls.h"
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#include "Effect.h"
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namespace lmms
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{
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constexpr float COMP_LOG = -2.2;
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class CompressorEffect : public Effect
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{
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Q_OBJECT
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public:
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CompressorEffect(Model* parent, const Descriptor::SubPluginFeatures::Key* key);
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~CompressorEffect() override = default;
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bool processAudioBuffer(sampleFrame* buf, const fpp_t frames) override;
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EffectControls* controls() override
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{
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return &m_compressorControls;
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}
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private slots:
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void calcAutoMakeup();
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void calcAttack();
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void calcRelease();
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void calcAutoAttack();
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void calcAutoRelease();
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void calcHold();
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void calcOutGain();
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void calcRatio();
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void calcRange();
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void resizeRMS();
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void calcLookaheadLength();
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void calcThreshold();
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void calcKnee();
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void calcInGain();
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void calcTiltCoeffs();
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void calcMix();
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void changeSampleRate();
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void redrawKnee();
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private:
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CompressorControls m_compressorControls;
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float msToCoeff(float ms);
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inline void calcTiltFilter(sample_t inputSample, sample_t &outputSample, int filtNum);
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inline int realmod(int k, int n);
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inline float realfmod(float k, float n);
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enum StereoLinkModes { Unlinked, Maximum, Average, Minimum, Blend };
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std::vector<float> m_preLookaheadBuf[2];
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int m_preLookaheadBufLoc[2] = {0};
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std::vector<float> m_lookaheadBuf[2];
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int m_lookaheadBufLoc[2] = {0};
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std::vector<float> m_inputBuf[2];
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int m_inputBufLoc = 0;
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float m_attCoeff;
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float m_relCoeff;
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float m_autoAttVal;
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float m_autoRelVal;
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int m_holdLength = 0;
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int m_holdTimer[2] = {0, 0};
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int m_lookaheadLength;
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int m_lookaheadDelayLength;
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int m_preLookaheadLength;
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float m_thresholdAmpVal;
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float m_autoMakeupVal;
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float m_outGainVal;
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float m_inGainVal;
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float m_rangeVal;
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float m_tiltVal;
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float m_mixVal;
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float m_coeffPrecalc;
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sampleFrame m_maxLookaheadVal;
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int m_maxLookaheadTimer[2] = {1, 1};
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float m_rmsTimeConst;
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float m_rmsVal[2] = {0, 0};
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float m_crestPeakVal[2] = {0, 0};
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float m_crestRmsVal[2] = {0, 0};
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float m_crestFactorVal[2] = {0, 0};
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float m_crestTimeConst;
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float m_tiltOut[2] = {0};
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bool m_cleanedBuffers = false;
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float m_sampleRate;
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float m_lgain;
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float m_hgain;
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float m_a0;
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float m_b1;
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float m_prevOut[2] = {0};
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float m_yL[2];
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float m_gainResult[2];
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float m_displayPeak[2];
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float m_displayGain[2];
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float m_kneeVal;
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float m_thresholdVal;
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float m_ratioVal;
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bool m_redrawKnee = true;
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bool m_redrawThreshold = true;
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friend class CompressorControls;
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friend class gui::CompressorControlDialog;
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} ;
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} // namespace lmms
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#endif
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