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/*
* Copyright (C) 2024 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2024 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-plugins-graph-equalizer
* Created on: 3 авг. 2021 г.
*
* lsp-plugins-graph-equalizer 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-graph-equalizer 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-graph-equalizer. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_PLUGINS_GRAPH_EQUALIZER_H_
#define PRIVATE_PLUGINS_GRAPH_EQUALIZER_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/filters/Equalizer.h>
#include <lsp-plug.in/dsp-units/util/Analyzer.h>
#include <lsp-plug.in/dsp-units/util/Delay.h>
#include <private/meta/graph_equalizer.h>
namespace lsp
{
namespace plugins
{
/**
* Graphic Equalizer Plugin Series
*/
class graph_equalizer: public plug::Module
{
public:
enum eq_mode_t
{
EQ_MONO,
EQ_STEREO,
EQ_LEFT_RIGHT,
EQ_MID_SIDE
};
protected:
enum chart_state_t
{
CS_UPDATE = 1 << 0,
CS_SYNC_AMP = 1 << 1
};
enum fft_position_t
{
FFTP_NONE,
FFTP_POST,
FFTP_PRE
};
typedef struct eq_band_t
{
bool bSolo; // Solo
uint32_t nSync; // Chart state
float *vTrRe; // Transfer function (real part)
float *vTrIm; // Transfer function (imaginary part)
plug::IPort *pGain; // Gain port
plug::IPort *pSolo; // Solo port
plug::IPort *pMute; // Mute port
plug::IPort *pEnable; // Enable port
plug::IPort *pVisibility; // Filter visibility
} eq_band_t;
typedef struct eq_channel_t
{
dspu::Equalizer sEqualizer; // Equalizer
dspu::Bypass sBypass; // Bypass
dspu::Delay sDryDelay; // Dry delay
uint32_t nSync; // Chart state
float fInGain; // Input gain
float fOutGain; // Output gain
eq_band_t *vBands; // Bands
float *vIn; // Input buffer
float *vOut; // Output buffer
float *vSend; // Send buffer
float *vReturn; // Return buffer
float *vInPtr; // Actual pointer to input data (for eliminatioon of unnecessary memory copies)
float *vExtPtr; // External (send) data pointer
float *vDryBuf; // Dry buffer
float *vInBuffer; // Input buffer (input signal passed to analyzer)
float *vOutBuffer; // Output buffer
float *vExtBuffer; // External (send) buffer
float *vTrRe; // Transfer function (real part)
float *vTrIm; // Transfer function (imaginary part)
plug::IPort *pIn; // Input port
plug::IPort *pOut; // Output port
plug::IPort *pSend; // Send port
plug::IPort *pReturn; // Return port
plug::IPort *pInGain; // Input gain
plug::IPort *pTrAmp; // Amplitude chart
plug::IPort *pFftInSwitch; // FFT input switch
plug::IPort *pFftOutSwitch; // FFT output switch
plug::IPort *pFftExtSwitch; // FFT external switch
plug::IPort *pFftInMesh; // FFT input mesh
plug::IPort *pFftOutMesh; // FFT output mesh
plug::IPort *pFftExtMesh; // FFT external mesh
plug::IPort *pVisible; // Visibility flag
plug::IPort *pInMeter; // Output level meter
plug::IPort *pOutMeter; // Output level meter
} eq_channel_t;
protected:
inline dspu::equalizer_mode_t get_eq_mode();
void dump_channel(dspu::IStateDumper *v, const eq_channel_t *c) const;
static void dump_band(dspu::IStateDumper *v, const eq_band_t *b);
protected:
dspu::Analyzer sAnalyzer; // Analyzer
eq_channel_t *vChannels; // Equalizer channels
uint32_t nBands; // Number of bands
uint32_t nMode; // Equalize mode
uint32_t nSlope; // Slope
bool bListen; // Listen
bool bMatched; // Matched transorm/Bilinear transform flag
float fInGain; // Input gain
float fZoom; // Zoom gain
float *vFreqs; // Frequency list
uint32_t *vIndexes; // FFT indexes
core::IDBuffer *pIDisplay; // Inline display buffer
plug::IPort *pEqMode; // Equalizer mode
plug::IPort *pSlope; // Filter slope
plug::IPort *pListen; // Mid-Side listen
plug::IPort *pInGain; // Input gain
plug::IPort *pOutGain; // Output gain
plug::IPort *pBypass; // Bypass
plug::IPort *pReactivity; // FFT reactivity
plug::IPort *pShiftGain; // Shift gain
plug::IPort *pZoom; // Graph zoom
plug::IPort *pBalance; // Output balance
protected:
void do_destroy();
void perform_analysis(size_t samples);
public:
explicit graph_equalizer(const meta::plugin_t *metadata, size_t bands, size_t mode);
virtual ~graph_equalizer() override;
public:
virtual void init(plug::IWrapper *wrapper, plug::IPort **ports) override;
virtual void destroy() override;
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_GRAPH_EQUALIZER_H_ */
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