Signed AU XLowpass

This commit is contained in:
Christopher Johnson 2021-05-23 18:06:05 -04:00
parent 1a6634c307
commit 50e813d894
4427 changed files with 1517866 additions and 0 deletions

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/* ========================================
* PurestConsole2Channel - PurestConsole2Channel.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __PurestConsole2Channel_H
#include "PurestConsole2Channel.h"
#endif
AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new PurestConsole2Channel(audioMaster);}
PurestConsole2Channel::PurestConsole2Channel(audioMasterCallback audioMaster) :
AudioEffectX(audioMaster, kNumPrograms, kNumParameters)
{
for (int x = 0; x < 15; x++) {biquadA[x] = 0.0;}
fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX;
fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX;
//this is reset: values being initialized only once. Startup values, whatever they are.
_canDo.insert("plugAsChannelInsert"); // plug-in can be used as a channel insert effect.
_canDo.insert("plugAsSend"); // plug-in can be used as a send effect.
_canDo.insert("x2in2out");
setNumInputs(kNumInputs);
setNumOutputs(kNumOutputs);
setUniqueID(kUniqueId);
canProcessReplacing(); // supports output replacing
canDoubleReplacing(); // supports double precision processing
programsAreChunks(true);
vst_strncpy (_programName, "Default", kVstMaxProgNameLen); // default program name
}
PurestConsole2Channel::~PurestConsole2Channel() {}
VstInt32 PurestConsole2Channel::getVendorVersion () {return 1000;}
void PurestConsole2Channel::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);}
void PurestConsole2Channel::getProgramName(char *name) {vst_strncpy (name, _programName, kVstMaxProgNameLen);}
//airwindows likes to ignore this stuff. Make your own programs, and make a different plugin rather than
//trying to do versioning and preventing people from using older versions. Maybe they like the old one!
VstInt32 PurestConsole2Channel::getChunk (void** data, bool isPreset)
{
float *chunkData = (float *)calloc(kNumParameters, sizeof(float));
/* Note: The way this is set up, it will break if you manage to save settings on an Intel
machine and load them on a PPC Mac. However, it's fine if you stick to the machine you
started with. */
*data = chunkData;
return kNumParameters * sizeof(float);
}
VstInt32 PurestConsole2Channel::setChunk (void* data, VstInt32 byteSize, bool isPreset)
{
/* calculate any other fields you need here - you could copy in
code from setParameter() here. */
return 0;
}
void PurestConsole2Channel::setParameter(VstInt32 index, float value) {
switch (index) {
default: throw; // unknown parameter, shouldn't happen!
}
}
float PurestConsole2Channel::getParameter(VstInt32 index) {
switch (index) {
default: break; // unknown parameter, shouldn't happen!
} return 0.0; //we only need to update the relevant name, this is simple to manage
}
void PurestConsole2Channel::getParameterName(VstInt32 index, char *text) {
switch (index) {
default: break; // unknown parameter, shouldn't happen!
} //this is our labels for displaying in the VST host
}
void PurestConsole2Channel::getParameterDisplay(VstInt32 index, char *text) {
switch (index) {
default: break; // unknown parameter, shouldn't happen!
} //this displays the values and handles 'popups' where it's discrete choices
}
void PurestConsole2Channel::getParameterLabel(VstInt32 index, char *text) {
switch (index) {
default: break; // unknown parameter, shouldn't happen!
}
}
VstInt32 PurestConsole2Channel::canDo(char *text)
{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know
bool PurestConsole2Channel::getEffectName(char* name) {
vst_strncpy(name, "PurestConsole2Channel", kVstMaxProductStrLen); return true;
}
VstPlugCategory PurestConsole2Channel::getPlugCategory() {return kPlugCategEffect;}
bool PurestConsole2Channel::getProductString(char* text) {
vst_strncpy (text, "airwindows PurestConsole2Channel", kVstMaxProductStrLen); return true;
}
bool PurestConsole2Channel::getVendorString(char* text) {
vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true;
}

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/* ========================================
* PurestConsole2Channel - PurestConsole2Channel.h
* Created 8/12/11 by SPIAdmin
* Copyright (c) 2011 __MyCompanyName__, All rights reserved
* ======================================== */
#ifndef __PurestConsole2Channel_H
#define __PurestConsole2Channel_H
#ifndef __audioeffect__
#include "audioeffectx.h"
#endif
#include <set>
#include <string>
#include <math.h>
enum {
kNumParameters = 0
}; //
const int kNumPrograms = 0;
const int kNumInputs = 2;
const int kNumOutputs = 2;
const unsigned long kUniqueId = 'pcoe'; //Change this to what the AU identity is!
class PurestConsole2Channel :
public AudioEffectX
{
public:
PurestConsole2Channel(audioMasterCallback audioMaster);
~PurestConsole2Channel();
virtual bool getEffectName(char* name); // The plug-in name
virtual VstPlugCategory getPlugCategory(); // The general category for the plug-in
virtual bool getProductString(char* text); // This is a unique plug-in string provided by Steinberg
virtual bool getVendorString(char* text); // Vendor info
virtual VstInt32 getVendorVersion(); // Version number
virtual void processReplacing (float** inputs, float** outputs, VstInt32 sampleFrames);
virtual void processDoubleReplacing (double** inputs, double** outputs, VstInt32 sampleFrames);
virtual void getProgramName(char *name); // read the name from the host
virtual void setProgramName(char *name); // changes the name of the preset displayed in the host
virtual VstInt32 getChunk (void** data, bool isPreset);
virtual VstInt32 setChunk (void* data, VstInt32 byteSize, bool isPreset);
virtual float getParameter(VstInt32 index); // get the parameter value at the specified index
virtual void setParameter(VstInt32 index, float value); // set the parameter at index to value
virtual void getParameterLabel(VstInt32 index, char *text); // label for the parameter (eg dB)
virtual void getParameterName(VstInt32 index, char *text); // name of the parameter
virtual void getParameterDisplay(VstInt32 index, char *text); // text description of the current value
virtual VstInt32 canDo(char *text);
private:
char _programName[kVstMaxProgNameLen + 1];
std::set< std::string > _canDo;
long double biquadA[15];
uint32_t fpdL;
uint32_t fpdR;
//default stuff
};
#endif

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/* ========================================
* PurestConsole2Channel - PurestConsole2Channel.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __PurestConsole2Channel_H
#include "PurestConsole2Channel.h"
#endif
void PurestConsole2Channel::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
biquadA[0] = 30000.0 / getSampleRate();
biquadA[1] = 0.618033988749894848204586;
double K = tan(M_PI * biquadA[0]); //lowpass
double norm = 1.0 / (1.0 + K / biquadA[1] + K * K);
biquadA[2] = K * K * norm;
biquadA[3] = 2.0 * biquadA[2];
biquadA[4] = biquadA[2];
biquadA[5] = 2.0 * (K * K - 1.0) * norm;
biquadA[6] = (1.0 - K / biquadA[1] + K * K) * norm;
while (--sampleFrames >= 0)
{
long double inputSampleL = *in1;
long double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-37) inputSampleL = fpdL * 1.18e-37;
if (fabs(inputSampleR)<1.18e-37) inputSampleR = fpdR * 1.18e-37;
if (biquadA[0] < 0.49999) {
long double tempSample = biquadA[2]*inputSampleL+biquadA[3]*biquadA[7]+biquadA[4]*biquadA[8]-biquadA[5]*biquadA[9]-biquadA[6]*biquadA[10];
biquadA[8] = biquadA[7]; biquadA[7] = inputSampleL; inputSampleL = tempSample;
biquadA[10] = biquadA[9]; biquadA[9] = inputSampleL; //DF1 left
tempSample = biquadA[2]*inputSampleR+biquadA[3]*biquadA[11]+biquadA[4]*biquadA[12]-biquadA[5]*biquadA[13]-biquadA[6]*biquadA[14];
biquadA[12] = biquadA[11]; biquadA[11] = inputSampleR; inputSampleR = tempSample;
biquadA[14] = biquadA[13]; biquadA[13] = inputSampleR; //DF1 right
}
if (inputSampleL > 1.57079633) inputSampleL = 1.57079633;
if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
if (inputSampleR > 1.57079633) inputSampleR = 1.57079633;
if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
inputSampleL = sin(inputSampleL);
inputSampleR = sin(inputSampleR);
//amplitude aspect
//begin 32 bit stereo floating point dither
int expon; frexpf((float)inputSampleL, &expon);
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
frexpf((float)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
//end 32 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
void PurestConsole2Channel::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
biquadA[0] = 30000.0 / getSampleRate();
biquadA[1] = 0.618033988749894848204586;
double K = tan(M_PI * biquadA[0]); //lowpass
double norm = 1.0 / (1.0 + K / biquadA[1] + K * K);
biquadA[2] = K * K * norm;
biquadA[3] = 2.0 * biquadA[2];
biquadA[4] = biquadA[2];
biquadA[5] = 2.0 * (K * K - 1.0) * norm;
biquadA[6] = (1.0 - K / biquadA[1] + K * K) * norm;
while (--sampleFrames >= 0)
{
long double inputSampleL = *in1;
long double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-43) inputSampleL = fpdL * 1.18e-43;
if (fabs(inputSampleR)<1.18e-43) inputSampleR = fpdR * 1.18e-43;
if (biquadA[0] < 0.49999) {
long double tempSample = biquadA[2]*inputSampleL+biquadA[3]*biquadA[7]+biquadA[4]*biquadA[8]-biquadA[5]*biquadA[9]-biquadA[6]*biquadA[10];
biquadA[8] = biquadA[7]; biquadA[7] = inputSampleL; inputSampleL = tempSample;
biquadA[10] = biquadA[9]; biquadA[9] = inputSampleL; //DF1 left
tempSample = biquadA[2]*inputSampleR+biquadA[3]*biquadA[11]+biquadA[4]*biquadA[12]-biquadA[5]*biquadA[13]-biquadA[6]*biquadA[14];
biquadA[12] = biquadA[11]; biquadA[11] = inputSampleR; inputSampleR = tempSample;
biquadA[14] = biquadA[13]; biquadA[13] = inputSampleR; //DF1 right
}
if (inputSampleL > 1.57079633) inputSampleL = 1.57079633;
if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
if (inputSampleR > 1.57079633) inputSampleR = 1.57079633;
if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
inputSampleL = sin(inputSampleL);
inputSampleR = sin(inputSampleR);
//amplitude aspect
//begin 64 bit stereo floating point dither
int expon; frexp((double)inputSampleL, &expon);
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
frexp((double)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
//end 64 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}