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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-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)
uint32_t nSync; // Chart state
bool bSolo; // Soloing filter
dspu::filter_params_t sOldFP; // Old filter parameters
dspu::filter_params_t sFP; // Filter parameters
plug::IPort *pType; // Filter type
plug::IPort *pMode; // Filter mode
plug::IPort *pFreq; // Filter frequency
plug::IPort *pWidth; // Filter width
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
uint32_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 *vInBuffer; // Input buffer (input signal passed to analyzer)
float *vOutBuffer; // Output buffer
float *vExtBuffer; // External buffer
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; // Actual pointer to return data (for eliminatioon of unnecessary memory copies)
uint32_t nSync; // Chart state
bool bHasSolo; // Channel has soloing filter
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; // Audio send
plug::IPort *pReturn; // Audio return
plug::IPort *pInGain; // Input gain
plug::IPort *pTrAmp; // Amplitude chart
plug::IPort *pPitch; // Frequency shift
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:
dspu::Analyzer sAnalyzer; // Analyzer
uint32_t nFilters; // Number of filters
uint32_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)
bool bSmoothMode; // Smooth mode for the equalizer
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 *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
plug::IPort *pInspect; // Inspected filter index
plug::IPort *pInspectRange; // Inspecting range
protected:
static inline dspu::equalizer_mode_t get_eq_mode(ssize_t mode);
static inline void decode_filter(uint32_t *ftype, uint32_t *slope, size_t mode);
static inline bool adjust_gain(size_t filter_type);
static bool filter_inspect_can_be_enabled(eq_channel_t *c, eq_filter_t *f);
static bool filter_has_width(size_t type);
protected:
void do_destroy();
void mark_all_filters_for_update();
void perform_analysis(size_t samples);
void process_channel(eq_channel_t *c, size_t start, size_t samples, size_t total_samples);
void dump_channel(dspu::IStateDumper *v, const eq_channel_t *c) const;
static void dump_filter(dspu::IStateDumper *v, const eq_filter_t *f);
static void dump_filter_params(dspu::IStateDumper *v, const char *id, const dspu::filter_params_t *fp);
public:
explicit para_equalizer(const meta::plugin_t *metadata, size_t filters, size_t mode);
virtual ~para_equalizer() override;
public:
virtual void init(plug::IWrapper *wrapper, plug::IPort **ports) override;
virtual void destroy() override;
virtual void ui_activated() override;
virtual void ui_deactivated() override;
virtual void update_settings() override;
virtual void update_sample_rate(long sr) 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_PARA_EQUALIZER_H_ */
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