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/*
* Copyright (C) 2021 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2021 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-plugins-mb-expander
* Created on: 3 авг. 2021 г.
*
* lsp-plugins-mb-expander is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-plugins-mb-expander is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-plugins-mb-expander. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_PLUGINS_MB_EXPANDER_H_
#define PRIVATE_PLUGINS_MB_EXPANDER_H_
#include <lsp-plug.in/plug-fw/plug.h>
#include <lsp-plug.in/plug-fw/core/IDBuffer.h>
#include <lsp-plug.in/dsp-units/ctl/Bypass.h>
#include <lsp-plug.in/dsp-units/dynamics/Expander.h>
#include <lsp-plug.in/dsp-units/filters/DynamicFilters.h>
#include <lsp-plug.in/dsp-units/filters/Equalizer.h>
#include <lsp-plug.in/dsp-units/filters/Filter.h>
#include <lsp-plug.in/dsp-units/util/Analyzer.h>
#include <lsp-plug.in/dsp-units/util/Delay.h>
#include <lsp-plug.in/dsp-units/util/MeterGraph.h>
#include <lsp-plug.in/dsp-units/util/Sidechain.h>
#include <private/meta/mb_expander.h>
namespace lsp
{
namespace plugins
{
/**
* Multiband Expander Plugin Series
*/
class mb_expander: public plug::Module
{
public:
enum c_mode_t
{
MBEM_MONO,
MBEM_STEREO,
MBEM_LR,
MBEM_MS
};
protected:
enum sync_t
{
S_COMP_CURVE = 1 << 0,
S_EQ_CURVE = 1 << 1,
S_ALL = S_COMP_CURVE | S_EQ_CURVE
};
typedef struct exp_band_t
{
dspu::Sidechain sSC; // Sidechain module
dspu::Equalizer sEQ[2]; // Sidechain equalizers
dspu::Expander sExp; // Expander
dspu::Filter sPassFilter; // Passing filter for 'classic' mode
dspu::Filter sRejFilter; // Rejection filter for 'classic' mode
dspu::Filter sAllFilter; // All-pass filter for phase compensation
dspu::Delay sScDelay; // Delay for lookahead purpose
float *vTr; // Transfer function
float *vVCA; // Voltage-controlled amplification value for each band
float fScPreamp; // Sidechain preamp
float fFreqStart;
float fFreqEnd;
float fFreqHCF; // Cutoff frequency for low-pass filter
float fFreqLCF; // Cutoff frequency for high-pass filter
float fMakeup; // Makeup gain
float fGainLevel; // Gain adjustment level
size_t nLookahead; // Lookahead amount
bool bEnabled; // Enabled flag
bool bCustHCF; // Custom frequency for high-cut filter
bool bCustLCF; // Custom frequency for low-cut filter
bool bMute; // Mute channel
bool bSolo; // Solo channel
bool bExtSc; // External sidechain
size_t nSync; // Synchronize output data flags
size_t nFilterID; // Identifier of the filter
plug::IPort *pExtSc; // External sidechain
plug::IPort *pScSource; // Sidechain source
plug::IPort *pScMode; // Sidechain mode
plug::IPort *pScLook; // Sidechain lookahead
plug::IPort *pScReact; // Sidechain reactivity
plug::IPort *pScPreamp; // Sidechain preamp
plug::IPort *pScLpfOn; // Sidechain low-pass on
plug::IPort *pScHpfOn; // Sidechain hi-pass on
plug::IPort *pScLcfFreq; // Sidechain low-cut frequency
plug::IPort *pScHcfFreq; // Sidechain hi-cut frequency
plug::IPort *pScFreqChart; // Sidechain band frequency chart
plug::IPort *pMode; // Mode of expander: upward/downward
plug::IPort *pEnable; // Enable expander
plug::IPort *pSolo; // Soloing
plug::IPort *pMute; // Muting
plug::IPort *pAttLevel; // Attack level
plug::IPort *pAttTime; // Attack time
plug::IPort *pRelLevel; // Release level
plug::IPort *pRelTime; // Release time
plug::IPort *pRatio; // Ratio
plug::IPort *pKnee; // Knee
plug::IPort *pMakeup; // Makeup gain
plug::IPort *pFreqEnd; // Frequency range end
plug::IPort *pCurveGraph; // Expander curve graph
plug::IPort *pRelLevelOut; // Release level out
plug::IPort *pEnvLvl; // Envelope level meter
plug::IPort *pCurveLvl; // Reduction curve level meter
plug::IPort *pMeterGain; // Reduction gain meter
} exp_band_t;
typedef struct split_t
{
bool bEnabled; // Split band is enabled
float fFreq; // Split band frequency
plug::IPort *pEnabled; // Enable port
plug::IPort *pFreq; // Split frequency
} split_t;
typedef struct channel_t
{
dspu::Bypass sBypass; // Bypass
dspu::Filter sEnvBoost[2]; // Envelope boost filter
dspu::Delay sDelay; // Delay for lookahead compensation purpose
dspu::Equalizer sDryEq; // Dry equalizer
exp_band_t vBands[meta::mb_expander_metadata::BANDS_MAX]; // Expander bands
split_t vSplit[meta::mb_expander_metadata::BANDS_MAX-1]; // Split bands
exp_band_t *vPlan[meta::mb_expander_metadata::BANDS_MAX]; // Execution plan (band indexes)
size_t nPlanSize; // Plan size
float *vIn; // Input data buffer
float *vOut; // Output data buffer
float *vScIn; // Sidechain data buffer (if present)
float *vInBuffer; // Input buffer
float *vBuffer; // Common data processing buffer
float *vScBuffer; // Sidechain buffer
float *vExtScBuffer; // External sidechain buffer
float *vTr; // Transfer function
float *vTrMem; // Transfer buffer (memory)
float *vInAnalyze; // Input signal analysis
float *vOutAnalyze; // Input signal analysis
size_t nAnInChannel; // Analyzer channel used for input signal analysis
size_t nAnOutChannel; // Analyzer channel used for output signal analysis
bool bInFft; // Input signal FFT enabled
bool bOutFft; // Output signal FFT enabled
plug::IPort *pIn; // Input
plug::IPort *pOut; // Output
plug::IPort *pScIn; // Sidechain
plug::IPort *pFftIn; // Pre-processing FFT analysis data
plug::IPort *pFftInSw; // Pre-processing FFT analysis control port
plug::IPort *pFftOut; // Post-processing FFT analysis data
plug::IPort *pFftOutSw; // Post-processing FFT analysis controlport
plug::IPort *pAmpGraph; // Expander's amplitude graph
plug::IPort *pInLvl; // Input level meter
plug::IPort *pOutLvl; // Output level meter
} channel_t;
protected:
dspu::Analyzer sAnalyzer; // Analyzer
dspu::DynamicFilters sFilters; // Dynamic filters for each band in 'modern' mode
size_t nMode; // Expander channel mode
bool bSidechain; // External side chain
bool bEnvUpdate; // Envelope filter update
bool bModern; // Modern mode
size_t nEnvBoost; // Envelope boost
channel_t *vChannels; // Expander channels
float fInGain; // Input gain
float fDryGain; // Dry gain
float fWetGain; // Wet gain
float fZoom; // Zoom
uint8_t *pData; // Aligned data pointer
float *vSc[2]; // Sidechain signal data
float *vAnalyze[4]; // Analysis buffer
float *vBuffer; // Temporary buffer
float *vEnv; // Expander envelope buffer
float *vTr; // Transfer buffer
float *vPFc; // Pass filter characteristics buffer
float *vRFc; // Reject filter characteristics buffer
float *vFreqs; // Analyzer FFT frequencies
float *vCurve; // Curve
uint32_t *vIndexes; // Analyzer FFT indexes
core::IDBuffer *pIDisplay; // Inline display buffer
plug::IPort *pBypass; // Bypass port
plug::IPort *pMode; // Global operating mode
plug::IPort *pInGain; // Input gain port
plug::IPort *pOutGain; // Output gain port
plug::IPort *pDryGain; // Dry gain port
plug::IPort *pWetGain; // Wet gain port
plug::IPort *pReactivity; // Reactivity
plug::IPort *pShiftGain; // Shift gain port
plug::IPort *pZoom; // Zoom port
plug::IPort *pEnvBoost; // Envelope adjust
protected:
static bool compare_bands_for_sort(const exp_band_t *b1, const exp_band_t *b2);
public:
explicit mb_expander(const meta::plugin_t *metadata, bool sc, size_t mode);
virtual ~mb_expander();
virtual void init(plug::IWrapper *wrapper, plug::IPort **ports);
virtual void destroy();
public:
virtual void update_settings();
virtual void update_sample_rate(long sr);
virtual void ui_activated();
virtual void process(size_t samples);
virtual bool inline_display(plug::ICanvas *cv, size_t width, size_t height);
virtual void dump(dspu::IStateDumper *v) const;
};
} // namespace plugins
} // namespace lsp
#endif /* PRIVATE_PLUGINS_MB_EXPANDER_H_ */
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