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/*
* ZaMultiComp multiband compressor
* Copyright (C) 2014 Damien Zammit <damien@zamaudio.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*/
#ifndef ZAMULTICOMPX2PLUGIN_HPP_INCLUDED
#define ZAMULTICOMPX2PLUGIN_HPP_INCLUDED
#include "DistrhoPlugin.hpp"
#include <algorithm>
START_NAMESPACE_DISTRHO
#define MAX_FILT 2
#define MAX_COMP 3
#define MAX_SAMPLES 480
#define DANGER 100000.f
#define EPS 1e-20f
// -----------------------------------------------------------------------
class ZaMultiCompPlugin : public Plugin
{
public:
enum Parameters
{
paramAttack1 = 0,
paramAttack2,
paramAttack3,
paramRelease1,
paramRelease2,
paramRelease3,
paramKnee1,
paramKnee2,
paramKnee3,
paramRatio1,
paramRatio2,
paramRatio3,
paramThresh1,
paramThresh2,
paramThresh3,
paramMakeup1,
paramMakeup2,
paramMakeup3,
paramXover1,
paramXover2,
paramToggle1,
paramToggle2,
paramToggle3,
paramListen1,
paramListen2,
paramListen3,
paramGlobalGain,
paramOutputLevel,
paramOutputLevelLow,
paramOutputLevelMed,
paramOutputLevelHigh,
paramGainR1,
paramGainR2,
paramGainR3,
paramCount
};
enum States
{
stateReadMeter,
stateCount
};
ZaMultiCompPlugin();
protected:
// -------------------------------------------------------------------
// Information
const char* getLabel() const noexcept override
{
return "ZaMultiComp";
}
const char* getDescription() const noexcept override
{
return "Mono multiband compressor, with 3 adjustable bands.";
}
const char* getMaker() const noexcept override
{
return "Damien Zammit";
}
const char* getHomePage() const noexcept override
{
return "http://www.zamaudio.com";
}
const char* getLicense() const noexcept override
{
return "GPL v2+";
}
uint32_t getVersion() const noexcept override
{
return d_version(3, 10, 0);
}
int64_t getUniqueId() const noexcept override
{
return d_cconst('Z', 'M', 'M', 'C');
}
// -------------------------------------------------------------------
// Init
void initParameter(uint32_t index, Parameter& parameter) ;
void initProgramName(uint32_t index, String& programName) ;
void initState(uint32_t, String&, String&) override;
// -------------------------------------------------------------------
// Internal data
float getParameterValue(uint32_t index) const override;
void setParameterValue(uint32_t index, float value) override;
void loadProgram(uint32_t index) override;
String getState(const char* key) const override;
void setState(const char* key, const char* value) override;
// -------------------------------------------------------------------
// Process
static inline float
sanitize_denormal(float v) {
if(!std::isnormal(v))
return 0.f;
return v;
}
static inline float
from_dB(float gdb) {
return (exp(gdb/20.f*log(10.f)));
}
static inline float
to_dB(float g) {
return (20.f*log10(g));
}
void run_comp(int k, float in, float *out);
void run_limit(float in, float *out);
void run_lr4(int i, float in, float *outlo, float *outhi);
void calc_lr4(float f, int i);
void activate() override;
void run(const float** inputs, float** outputs, uint32_t frames) override;
struct linear_svf {
double k;
double g;
double s[2];
};
struct linear_svf simper[2][MAX_FILT];
void linear_svf_set_xover(struct linear_svf *self, float sample_rate, float cutoff, float resonance);
void linear_svf_reset(struct linear_svf *self);
float run_linear_svf_xover(struct linear_svf *self, float in, float mixlow, float mixhigh);
void pushsample(float samples[], float sample, int k);
float averageabs(float samples[]);
// -------------------------------------------------------------------
private:
float attack[MAX_COMP],release[MAX_COMP],knee[MAX_COMP],ratio[MAX_COMP],thresdb[MAX_COMP],makeup[MAX_COMP],globalgain;
float gainr[MAX_COMP],toggle[MAX_COMP],listen[MAX_COMP],max,out,xover1,xover2;
float old_yl[MAX_COMP], old_y1[MAX_COMP], old_yg[MAX_COMP];
float old_ll, old_l1;
float limit, outlevel[3];
int pos[3];
float outlevelold[3][MAX_SAMPLES];
float oldxover1, oldxover2;
bool reset;
};
// -----------------------------------------------------------------------
END_NAMESPACE_DISTRHO
#endif
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