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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-para-equalizer
* Created on: 2 авг. 2021 г.
*
* lsp-plugins-para-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-para-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-para-equalizer. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_PLUGINS_PARA_EQUALIZER_H_
#define PRIVATE_PLUGINS_PARA_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/para_equalizer.h>
namespace lsp
{
namespace plugins
{
/**
* Parametric equalizer plugin
*/
class para_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_filter_t
{
float *vTrRe; // Transfer function (real part)
float *vTrIm; // Transfer function (imaginary part)
size_t nSync; // Chart state
bool bSolo; // Soloing filter
plug::IPort *pType; // Filter type
plug::IPort *pMode; // Filter mode
plug::IPort *pFreq; // Filter frequency
plug::IPort *pSlope; // Filter slope
plug::IPort *pSolo; // Solo port
plug::IPort *pMute; // Mute port
plug::IPort *pGain; // Filter gain
plug::IPort *pQuality; // Quality factor
plug::IPort *pActivity; // Filter activity flag
plug::IPort *pTrAmp; // Amplitude chart
} eq_filter_t;
typedef struct eq_channel_t
{
dspu::Equalizer sEqualizer; // Equalizer
dspu::Bypass sBypass; // Bypass
dspu::Delay sDryDelay; // Dry delay
size_t nLatency; // Latency of the channel
float fInGain; // Input gain
float fOutGain; // Output gain
float fPitch; // Frequency shift
eq_filter_t *vFilters; // List of filters
float *vDryBuf; // Dry buffer
float *vBuffer; // Buffer for temporary data
float *vIn; // Input buffer
float *vOut; // Output buffer
size_t nSync; // Chart state
float *vTrRe; // Transfer function (real part)
float *vTrIm; // Transfer function (imaginary part)
plug::IPort *pIn; // Input port
plug::IPort *pOut; // Output port
plug::IPort *pInGain; // Input gain
plug::IPort *pTrAmp; // Amplitude chart
plug::IPort *pPitch; // Frequency shift
plug::IPort *pFft; // FFT chart
plug::IPort *pVisible; // Visibility flag
plug::IPort *pInMeter; // Output level meter
plug::IPort *pOutMeter; // Output level meter
} eq_channel_t;
protected:
dspu::Analyzer sAnalyzer; // Analyzer
size_t nFilters; // Number of filters
size_t nMode; // Operating mode
eq_channel_t *vChannels; // List of channels
float *vFreqs; // Frequency list
uint32_t *vIndexes; // FFT indexes
float fGainIn; // Input gain
float fZoom; // Zoom gain
bool bListen; // Listen mode (only for MS para_equalizer)
fft_position_t nFftPosition; // FFT position
core::IDBuffer *pIDisplay; // Inline display buffer
plug::IPort *pBypass; // Bypass port
plug::IPort *pGainIn; // Input gain port
plug::IPort *pGainOut; // Output gain port
plug::IPort *pFftMode; // FFT mode
plug::IPort *pReactivity; // FFT reactivity
plug::IPort *pListen; // Listen mode (only for MS equalizer)
plug::IPort *pShiftGain; // Shift gain
plug::IPort *pZoom; // Graph zoom
plug::IPort *pEqMode; // Equalizer mode
plug::IPort *pBalance; // Output balance
protected:
void destroy_state();
inline void decode_filter(size_t *ftype, size_t *slope, size_t mode);
inline bool adjust_gain(size_t filter_type);
inline dspu::equalizer_mode_t get_eq_mode();
void dump_channel(dspu::IStateDumper *v, const eq_channel_t *c) const;
static void dump_filter(dspu::IStateDumper *v, const eq_filter_t *f);
public:
explicit para_equalizer(const meta::plugin_t *metadata, size_t filters, size_t mode);
virtual ~para_equalizer();
public:
virtual void init(plug::IWrapper *wrapper, plug::IPort **ports);
virtual void destroy();
virtual void ui_activated();
virtual void update_settings();
virtual void update_sample_rate(long sr);
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_PARA_EQUALIZER_H_ */
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