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/*
* Copyright (C) 2025 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2025 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-plugins-expander
* Created on: 3 авг. 2021 г.
*
* lsp-plugins-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-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-expander. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_PLUGINS_EXPANDER_H_
#define PRIVATE_PLUGINS_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/Equalizer.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/expander.h>
namespace lsp
{
namespace plugins
{
/**
* Expander Plugin Series
*/
class expander: public plug::Module
{
public:
enum exp_mode_t
{
EM_MONO,
EM_STEREO,
EM_LR,
EM_MS
};
protected:
enum sc_source_t
{
SCT_INTERNAL,
SCT_EXTERNAL,
SCT_LINK,
};
enum sc_graph_t
{
G_IN,
G_SC,
G_ENV,
G_GAIN,
G_OUT,
G_TOTAL
};
enum sc_meter_t
{
M_IN,
M_SC,
M_ENV,
M_GAIN,
M_CURVE,
M_OUT,
M_TOTAL
};
enum sync_t
{
S_CURVE = 1 << 0,
S_ALL = S_CURVE
};
typedef struct premix_t
{
float fInToSc; // Input -> Sidechain mix
float fInToLink; // Input -> Link mix
float fLinkToIn; // Link -> Input mix
float fLinkToSc; // Link -> Sidechain mix
float fScToIn; // Sidechain -> Input mix
float fScToLink; // Sidechain -> Link mix
float *vIn[2]; // Input buffer
float *vOut[2]; // Output buffer
float *vSc[2]; // Sidechain buffer
float *vLink[2]; // Link buffer
float *vTmpIn[2]; // Replacement buffer for input
float *vTmpLink[2]; // Replacement buffer for link
float *vTmpSc[2]; // Replacement buffer for sidechain
plug::IPort *pInToSc; // Input -> Sidechain mix
plug::IPort *pInToLink; // Input -> Link mix
plug::IPort *pLinkToIn; // Link -> Input mix
plug::IPort *pLinkToSc; // Link -> Sidechain mix
plug::IPort *pScToIn; // Sidechain -> Input mix
plug::IPort *pScToLink; // Sidechain -> Link mix
} premix_t;
typedef struct channel_t
{
dspu::Bypass sBypass; // Bypass
dspu::Sidechain sSC; // Sidechain module
dspu::Equalizer sSCEq; // Sidechain equalizer
dspu::Expander sExp; // Expansion module
dspu::Delay sLaDelay; // Lookahead delay
dspu::Delay sInDelay; // Input compensation delay
dspu::Delay sOutDelay; // Output compensation delay
dspu::Delay sDryDelay; // Dry delay
dspu::MeterGraph sGraph[G_TOTAL]; // Input meter graph
float *vIn; // Input data
float *vOut; // Output data
float *vSc; // Sidechain data
float *vEnv; // Envelope data
float *vGain; // Gain reduction data
bool bScListen; // Listen sidechain
uint32_t nSync; // Synchronization flags
uint32_t nScType; // Sidechain mode
float fMakeup; // Makeup gain
float fDryGain; // Dry gain
float fWetGain; // Wet gain
float fDotIn; // Dot input gain
float fDotOut; // Dot output gain
plug::IPort *pIn; // Input port
plug::IPort *pOut; // Output port
plug::IPort *pSC; // Sidechain port
plug::IPort *pShmIn; // Shared memory link input port
plug::IPort *pGraph[G_TOTAL]; // History graphs
plug::IPort *pMeter[M_TOTAL]; // Meters
plug::IPort *pScType; // Sidechain location
plug::IPort *pScMode; // Sidechain mode
plug::IPort *pScLookahead; // Sidechain lookahead
plug::IPort *pScListen; // Sidechain listen
plug::IPort *pScSource; // Sidechain source
plug::IPort *pScReactivity; // Sidechain reactivity
plug::IPort *pScPreamp; // Sidechain pre-amplification
plug::IPort *pScHpfMode; // Sidechain high-pass filter mode
plug::IPort *pScHpfFreq; // Sidechain high-pass filter frequency
plug::IPort *pScLpfMode; // Sidechain low-pass filter mode
plug::IPort *pScLpfFreq; // Sidechain low-pass filter frequency
plug::IPort *pMode; // Mode
plug::IPort *pAttackLvl; // Attack level
plug::IPort *pReleaseLvl; // Release level
plug::IPort *pAttackTime; // Attack time
plug::IPort *pReleaseTime; // Release time
plug::IPort *pHoldTime; // Hold time
plug::IPort *pRatio; // Ratio
plug::IPort *pKnee; // Knee
plug::IPort *pMakeup; // Makeup
plug::IPort *pDryGain; // Dry gain
plug::IPort *pWetGain; // Wet gain
plug::IPort *pDryWet; // Dry/Wet balance
plug::IPort *pCurve; // Curve graph
plug::IPort *pReleaseOut; // Output release level
} channel_t;
protected:
size_t nMode; // Expander mode
bool bSidechain; // External side chain
channel_t *vChannels; // Expander channels
float *vCurve; // Expander curve
float *vTime; // Time points buffer
float *vEmptyBuffer; // Empty buffer
bool bPause; // Pause button
bool bClear; // Clear button
bool bMSListen; // Mid/Side listen
bool bStereoSplit; // Stereo split
float fInGain; // Input gain
bool bUISync; // UI Sync
core::IDBuffer *pIDisplay; // Inline display buffer
premix_t sPremix; // Pre-mix settings
plug::IPort *pBypass; // Bypass port
plug::IPort *pInGain; // Input gain
plug::IPort *pOutGain; // Output gain
plug::IPort *pPause; // Pause gain
plug::IPort *pClear; // Cleanup gain
plug::IPort *pMSListen; // Mid/Side listen
plug::IPort *pStereoSplit; // Stereo split mode
plug::IPort *pScSpSource; // Sidechain source for stereo split mode
uint8_t *pData; // Expander data
protected:
static dspu::sidechain_source_t decode_sidechain_source(int source, bool split, size_t channel);
static inline bool use_sidechain(const channel_t & c);
protected:
void do_destroy();
void update_premix();
void premix_channel(uint32_t channel, float * & in, float * & out, float * & sc, float * & link, size_t count);
uint32_t decode_sidechain_type(uint32_t sc) const;
inline float *select_buffer(const channel_t & c, float *in, float *sc, float *shm);
public:
expander(const meta::plugin_t *metadata, bool sc, size_t mode);
virtual ~expander() override;
virtual void init(plug::IWrapper *wrapper, plug::IPort **ports) override;
virtual void destroy() override;
public:
virtual void update_settings() override;
virtual void update_sample_rate(long sr) override;
virtual void ui_activated() override;
virtual void process(size_t samples) override;
virtual bool inline_display(plug::ICanvas *cv, size_t width, size_t height) override;
virtual void dump(dspu::IStateDumper *v) const override;
};
} /* namespace plugins */
} /* namespace lsp */
#endif /* PRIVATE_PLUGINS_EXPANDER_H_ */
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