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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-referencer
* Created on: 16 окт 2024 г.
*
* lsp-plugins-referencer 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-referencer 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-referencer. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_PLUGINS_REFERENCER_H_
#define PRIVATE_PLUGINS_REFERENCER_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/meters/Correlometer.h>
#include <lsp-plug.in/dsp-units/meters/ILUFSMeter.h>
#include <lsp-plug.in/dsp-units/meters/LoudnessMeter.h>
#include <lsp-plug.in/dsp-units/meters/Panometer.h>
#include <lsp-plug.in/dsp-units/meters/TruePeakMeter.h>
#include <lsp-plug.in/dsp-units/sampling/Sample.h>
#include <lsp-plug.in/dsp-units/stat/QuantizedCounter.h>
#include <lsp-plug.in/dsp-units/util/Delay.h>
#include <lsp-plug.in/dsp-units/util/RawRingBuffer.h>
#include <lsp-plug.in/dsp-units/util/ScaledMeterGraph.h>
#include <lsp-plug.in/dsp-units/util/Sidechain.h>
#include <lsp-plug.in/plug-fw/plug.h>
#include <private/meta/referencer.h>
namespace lsp
{
namespace plugins
{
/**
* Base class for the latency compensation delay
*/
class referencer: public plug::Module
{
protected:
enum playback_t
{
PB_OFF, // Sample is not playing
PB_FADE_IN, // Sample is starting to play
PB_FADE_OUT, // Sample is stopping to play
PB_ACTIVE, // Sample is playing
};
enum source_t
{
SRC_MIX,
SRC_REFERENCE,
SRC_BOTH,
};
enum stereo_mode_t
{
SM_STEREO,
SM_INVERSE_STEREO,
SM_MONO,
SM_SIDE,
SM_SIDES,
SM_MID_SIDE,
SM_SIDE_MID,
SM_LEFT_ONLY,
SM_LEFT,
SM_RIGHT,
SM_RIGHT_ONLY,
};
enum post_filter_t
{
PF_OFF,
PF_SUB_BASS,
PF_BASS,
PF_LOW_MID,
PF_MID,
PF_HIGH_MID,
PF_HIGH,
};
enum dmtype_t
{
DM_PEAK, // Peak values
DM_TRUE_PEAK, // True peak values
DM_RMS, // RMS value
DM_M_LUFS, // Momentary LUFS value
DM_S_LUFS, // Short-term LUFS value
DM_I_LUFS, // Integrated LUFS value
DM_PSR, // PSR (True Peak / LUFS) value
DM_CORR, // Correlation (stereo only)
DM_PAN, // Panning (stereo only)
DM_MSBAL, // Mid/Side balance (stereo only)
DM_TOTAL,
DM_STEREO = DM_TOTAL,
DM_MONO = DM_CORR
};
enum fgraph_t
{
FG_LEFT, // Spectrum analysis of the left channel
FG_RIGHT, // Spectrum analysis of the right channel
FG_MID, // Spectrum analysis of the middle channel
FG_SIDE, // Spectrum analysis of the side channel
FG_CORR, // Spectral correlation between left and right channels
FG_PAN, // Panning between left and right channels
FG_MSBAL, // Balance between mid and side signals
FG_TOTAL,
FG_STEREO = FG_TOTAL,
FG_MONO = FG_RIGHT
};
enum ftype_t
{
FT_CURR,
FT_MIN,
FT_MAX,
FT_TOTAL
};
enum psr_mode_t
{
PSR_DENSITY,
PSR_FREQUENCY,
PSR_NORMALIZED
};
enum gain_matching_t
{
MATCH_NONE,
MATCH_REFERENCE,
MATCH_MIX
};
enum waveform_t
{
WF_LEFT,
WF_RIGHT,
WF_MID,
WF_SIDE,
WF_TOTAL,
WF_MONO = WF_RIGHT,
WF_STEREO = WF_TOTAL
};
struct afile_t;
class AFLoader: public ipc::ITask
{
private:
referencer *pLink;
afile_t *pFile;
public:
explicit AFLoader(referencer *link, afile_t *descr);
virtual ~AFLoader();
public:
virtual status_t run();
void dump(dspu::IStateDumper *v) const;
};
typedef struct asource_t
{
float fGain; // Current gain
float fOldGain; // Previous gain value
float fNewGain; // New gain
uint32_t nTransition; // Gain transition
float fWaveformOff; // Waveform offset
plug::IPort *pFrameOffset; // Waveform frame offset
} asource_t;
typedef struct loop_t
{
playback_t nState; // Playback state
uint32_t nTransition; // For transition state, the current offset
int32_t nStart; // Start position of loop
int32_t nEnd; // End position of loop
int32_t nPos; // Current position of loop
bool bFirst; // First loop (does not requre to cross-fade with tail)
plug::IPort *pStart; // Start position of loop
plug::IPort *pEnd; // Start position of loop
plug::IPort *pPlayPos; // Current play position
} loop_t;
typedef struct afile_t
{
AFLoader *pLoader; // Audio file loader task
dspu::Sample *pSample; // Loaded sample
dspu::Sample *pLoaded; // New loaded sample
status_t nStatus; // Loading status
uint32_t nLength; // Audio sample length
float fGain; // Audio file gain
bool bSync; // Sync sample with UI
float *vThumbs[meta::referencer::CHANNELS_MAX]; // List of thumbnails
loop_t vLoops[meta::referencer::AUDIO_LOOPS]; // Array of loops for this sample
plug::IPort *pFile; // Audio file port
plug::IPort *pStatus; // Status of the file
plug::IPort *pLength; // Actual length of the file
plug::IPort *pMesh; // Audio file mesh
plug::IPort *pGain; // Audio gain
} afile_t;
typedef struct channel_t
{
// DSP processing modules
dspu::Bypass sBypass; // Bypass
dspu::Equalizer vPreFilters[2]; // Pre-filters for mix and reference
dspu::Equalizer sPostFilter; // Post-filter
float *vIn; // Input buffer
float *vOut; // Output buffer
float *vBuffer; // Signal buffer
float *vInBuffer; // Input buffer
// Input ports
plug::IPort *pIn; // Input port
plug::IPort *pOut; // Output port
} channel_t;
typedef struct fft_graph_t
{
float *vData[FT_TOTAL]; // Measured values
} fft_graph_t;
typedef struct fft_meters_t
{
float *vHistory[2]; // History for left and right channels
uint32_t nFftPeriod; // FFT analysis period
uint32_t nFftFrame; // Current FFT frame
uint32_t nFftHistory; // Current FFT per channel history write position
fft_graph_t vGraphs[FG_TOTAL]; // List of graphs
} fft_meters_t;
typedef struct dyna_meters_t
{
dspu::Sidechain sRMSMeter; // RMS meter
dspu::TruePeakMeter sTPMeter[2]; // True Peak meters
dspu::Delay sPSRDelay; // PSR measurement Peak delay
dspu::LoudnessMeter sAutogainMeter; // Short-term LUFS meter for Autogain matching
dspu::LoudnessMeter sMLUFSMeter; // Momentary LUFS meter
dspu::LoudnessMeter sSLUFSMeter; // Short-term LUFS meter
dspu::ILUFSMeter sILUFSMeter; // Integrated loudness meter
dspu::Correlometer sCorrMeter; // Corellometer
dspu::Panometer sPanometer; // Panometer
dspu::Panometer sMsBalance; // Mid/Side balance
dspu::QuantizedCounter sPSRStats; // PSR statistics
dspu::RawRingBuffer vWaveform[WF_TOTAL]; // Waveform history (capture)
dspu::ScaledMeterGraph vGraphs[DM_TOTAL]; // Output graphs
float *vLoudness; // Measured short-term loudness
float fGain; // Current gain
double fPSRLevel; // Current peak value for PSR measurement
uint32_t nGonioStrobe; // Counter for strobe signal of goniometer
plug::IPort *pMeters[DM_TOTAL]; // Output meters
plug::IPort *pGoniometer; // Goniometer stream
plug::IPort *pPsrPcValue; // PSR value in percents (over threshold)
} dyna_meters_t;
protected:
static const float dm_endpoints[];
static const float fft_endpoints[];
protected:
uint32_t nChannels; // Number of channels
uint32_t nPlaySample; // Current sample index
uint32_t nPlayLoop; // Current loop index
uint32_t nGainMatching; // Gain matching mode
float fGainMatchGrow; // Gain matching grow time coefficient
float fGainMatchFall; // Gain matching fall time coefficient
uint32_t nCrossfadeTime; // Cross-fade time in samples
float fMaxTime; // Maximum display time
stereo_mode_t enMode; // Stereo mode
float fWaveformLen; // Waveform length
uint32_t nFftRank; // FFT rank
uint32_t nFftWindow; // FFT window
uint32_t nFftEnvelope; // FFT envelope
float fFftTau; // FFT smooth coefficient
float fFftBal; // FFT ballistics coefficient
uint32_t nFftSrc; // FFT marker source
float fFftFreq; // FFT marker frequency
uint32_t nGonioPeriod; // Goniometer period
uint32_t nPsrMode; // PSR display mode
uint32_t nPsrThresh; // PSR threshold (index)
double fPSRDecay; // Peak decay for PSR measurement
bool bPlay; // Play
bool bSyncLoopMesh; // Sync loop mesh
bool bUpdFft; // Update FFT-related data
bool bFftDamping; // FFT damping
bool bFreeze; // Freeze analysis
float *vBuffer; // Temporary buffer
float *vFftFreqs; // FFT frequencies
uint16_t *vFftInds; // FFT indices
float *vFftWindow; // FFT window
float *vFftEnvelope; // FFT envelope
float *vPsrLevels; // PSR levels
channel_t *vChannels; // Delay channels
asource_t sMix; // Mix signal characteristics
asource_t sRef; // Reference signal characteristics
ipc::IExecutor *pExecutor; // Executor service
afile_t vSamples[meta::referencer::AUDIO_SAMPLES]; // Audio samples
dyna_meters_t vDynaMeters[2]; // Dynamic meters for mix and reference
fft_meters_t vFftMeters[2]; // FFT meters
plug::IPort *pBypass; // Bypass
plug::IPort *pFreeze; // Freeze analysis
plug::IPort *pPlay; // Play switch
plug::IPort *pPlaySample; // Current sample index
plug::IPort *pPlayLoop; // Current loop index
plug::IPort *pSource; // Audio source
plug::IPort *pLoopMesh; // Loop mesh
plug::IPort *pLoopLen; // Loop length
plug::IPort *pLoopPos; // Loop play position
plug::IPort *pGainMatching; // Gain matching mode
plug::IPort *pGainMatchReact; // Gain matching reactivity
plug::IPort *pMode; // Output mode
plug::IPort *pFltPos; // Filter position
plug::IPort *pFltMode; // Filter mode
plug::IPort *pFltSlope; // Filter slope
plug::IPort *pFltSel; // Filter selector
plug::IPort *pFltSplit[meta::referencer::FLT_SPLITS]; // Filter split frequencies
plug::IPort *pMaxTime; // Maximum time on the graph
plug::IPort *pILUFSTime; // Integrated LUFS time
plug::IPort *pDynaMesh; // Mesh for dynamics output
plug::IPort *pWaveformMesh; // Waveform mesh
plug::IPort *pFrameLength; // Waveform frame length
plug::IPort *pFftRank; // FFT rank
plug::IPort *pFftWindow; // FFT window
plug::IPort *pFftEnvelope; // FFT envelope
plug::IPort *pFftReactivity; // FFT reactivity
plug::IPort *pFftDamping; // Enable FFT damping
plug::IPort *pFftReset; // Reset FFT minimum and maximum
plug::IPort *pFftBallistics; // FFT ballistics
plug::IPort *pFftMesh[3]; // FFT mesh
plug::IPort *pFftVMarkSrc; // Vertical marker source
plug::IPort *pFftVMarkFreq; // Vertical marker frequency
plug::IPort *pFftVMarkVal; // Vertical marker value
plug::IPort *pPsrPeriod; // PSR period
plug::IPort *pPsrThreshold; // PSR threshold
plug::IPort *pPsrMesh; // PSR output
plug::IPort *pPsrDisplay; // PSR display mode
uint8_t *pData; // Allocated data
protected:
static void destroy_sample(dspu::Sample * &sample);
static void make_thumbnail(float *dst, const float *src, size_t len, size_t dst_len);
static void copy_waveform(float *dst, dspu::RawRingBuffer *rb, size_t offset, size_t length, size_t dst_len);
static dspu::equalizer_mode_t decode_equalizer_mode(size_t mode);
static void set_loop_range(loop_t *al, ssize_t begin, ssize_t end, ssize_t limit);
protected:
void dump_channels(dspu::IStateDumper *v) const;
void dump_asource(dspu::IStateDumper *v, const char *name, const asource_t *as) const;
void dump_dyna_meters(dspu::IStateDumper *v) const;
void dump_fft_meters(dspu::IStateDumper *v) const;
protected:
status_t load_file(afile_t *file);
stereo_mode_t decode_stereo_mode(size_t mode);
void unload_afile(afile_t *file);
void update_playback_state();
void update_loop_ranges();
void preprocess_audio_channels();
void process_file_requests();
void prepare_reference_signal(size_t samples);
void mix_channels(size_t samples);
void apply_pre_filters(size_t samples);
void apply_post_filters(size_t samples);
void apply_stereo_mode(size_t samples);
void apply_gain_matching(size_t samples);
void render_loop(afile_t *af, loop_t *al, size_t samples);
void perform_fft_analysis(fft_meters_t *fm, const float *l, const float *r, size_t samples);
void process_fft_frame(fft_meters_t *fm);
void process_goniometer(dyna_meters_t *dm, const float *l, const float *r, size_t samples);
void perform_metering(dyna_meters_t *dm, const float *l, const float *r, size_t samples);
void accumulate_fft(fft_meters_t *fm, size_t type, const float *buf);
void reset_fft();
void output_file_data();
void output_loop_data();
void output_dyna_meters();
void output_waveform_meshes();
void output_psr_mesh();
void output_dyna_meshes();
void output_spectrum_analysis(size_t type);
void reduce_spectrum(float *dst, const float *src);
void reduce_cspectrum(float *dst, const float *src);
void configure_filter(dspu::Equalizer *eq, bool enable);
void do_destroy();
public:
explicit referencer(const meta::plugin_t *meta);
referencer(const referencer &) = delete;
referencer(referencer &&) = delete;
virtual ~referencer() override;
referencer & operator = (const referencer &) = delete;
referencer & operator = (referencer &&) = delete;
virtual void init(plug::IWrapper *wrapper, plug::IPort **ports) override;
virtual void destroy() override;
public:
virtual void update_sample_rate(long sr) override;
virtual void update_settings() override;
virtual void process(size_t samples) override;
virtual void dump(dspu::IStateDumper *v) const override;
virtual void ui_activated() override;
};
} /* namespace plugins */
} /* namespace lsp */
#endif /* PRIVATE_PLUGINS_REFERENCER_H_ */
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