mirror of
https://github.com/cookiengineer/audacity
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ed41183536
Please note that normalizing to large LUFS values may introduce clipping of large peaks. However, the recommended target value in EBU R128 of -23 LUFS should be totally safe but only uses a small amount of the possible quantization range. For tracks with normal dynamic range, normalizing to about -10 LUFS should be possible without clipping.
115 lines
2.8 KiB
C++
115 lines
2.8 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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Normalize.h
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Dominic Mazzoni
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Vaughan Johnson (Preview)
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Max Maisel (Loudness)
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**********************************************************************/
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#ifndef __AUDACITY_EFFECT_NORMALIZE__
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#define __AUDACITY_EFFECT_NORMALIZE__
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#include <wx/checkbox.h>
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#include <wx/event.h>
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#include <wx/stattext.h>
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#include <wx/string.h>
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#include <wx/textctrl.h>
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#include "Effect.h"
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#include "Biquad.h"
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class ShuttleGui;
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#define NORMALIZE_PLUGIN_SYMBOL IdentInterfaceSymbol{ XO("Normalize") }
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class EffectNormalize final : public Effect
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{
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public:
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EffectNormalize();
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virtual ~EffectNormalize();
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// IdentInterface implementation
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IdentInterfaceSymbol GetSymbol() override;
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wxString GetDescription() override;
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wxString ManualPage() override;
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// EffectDefinitionInterface implementation
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EffectType GetType() override;
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// EffectClientInterface implementation
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bool DefineParams( ShuttleParams & S ) override;
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bool GetAutomationParameters(CommandParameters & parms) override;
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bool SetAutomationParameters(CommandParameters & parms) override;
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// Effect implementation
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bool CheckWhetherSkipEffect() override;
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bool Startup() override;
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bool Process() override;
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void PopulateOrExchange(ShuttleGui & S) override;
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bool TransferDataToWindow() override;
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bool TransferDataFromWindow() override;
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private:
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// EffectNormalize implementation
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enum AnalyseOperation
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{
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ANALYSE_DC, ANALYSE_LOUDNESS, ANALYSE_LOUDNESS_DC
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};
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bool ProcessOne(
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WaveTrack * t, const wxString &msg, double& progress, float offset);
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bool AnalyseTrack(const WaveTrack * track, const wxString &msg,
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double &progress, float &offset, float &extent);
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bool AnalyseTrackData(const WaveTrack * track, const wxString &msg, double &progress,
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AnalyseOperation op, float &offset);
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void AnalyseDataDC(float *buffer, size_t len);
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void AnalyseDataLoudness(float *buffer, size_t len);
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void AnalyseDataLoudnessDC(float *buffer, size_t len);
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void ProcessData(float *buffer, size_t len, float offset);
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void CalcEBUR128HPF(float fs);
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void CalcEBUR128HSF(float fs);
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void OnUpdateUI(wxCommandEvent & evt);
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void UpdateUI();
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private:
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double mLevel;
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bool mGain;
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bool mDC;
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bool mStereoInd;
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bool mUseLoudness;
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double mCurT0;
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double mCurT1;
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float mMult;
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double mSum;
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double mSqSum;
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sampleCount mCount;
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wxCheckBox *mGainCheckBox;
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wxCheckBox *mDCCheckBox;
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wxTextCtrl *mLevelTextCtrl;
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wxStaticText *mLeveldB;
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wxStaticText *mWarning;
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wxCheckBox *mUseLoudnessCheckBox;
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wxCheckBox *mStereoIndCheckBox;
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bool mCreating;
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Biquad mR128HSF;
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Biquad mR128HPF;
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DECLARE_EVENT_TABLE()
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};
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#endif
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