diff options
author | Chris Johnson <jinx6568@sover.net> | 2018-08-12 21:51:18 -0400 |
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committer | Chris Johnson <jinx6568@sover.net> | 2018-08-12 21:51:18 -0400 |
commit | a559d634ab0dcb39b7e71ccbcb0f2098f4f09e67 (patch) | |
tree | af90f510e027ea7ef1904841aed5b8cd9c638ab5 /plugins/LinuxVST | |
parent | f95282c3749d401f08fa91f4e7b71741151fd088 (diff) | |
download | airwindows-lv2-port-a559d634ab0dcb39b7e71ccbcb0f2098f4f09e67.tar.gz airwindows-lv2-port-a559d634ab0dcb39b7e71ccbcb0f2098f4f09e67.tar.bz2 airwindows-lv2-port-a559d634ab0dcb39b7e71ccbcb0f2098f4f09e67.zip |
VariMu
Diffstat (limited to 'plugins/LinuxVST')
-rwxr-xr-x | plugins/LinuxVST/CMakeLists.txt | 1 | ||||
-rwxr-xr-x | plugins/LinuxVST/src/VariMu/VariMu.cpp | 159 | ||||
-rwxr-xr-x | plugins/LinuxVST/src/VariMu/VariMu.h | 87 | ||||
-rwxr-xr-x | plugins/LinuxVST/src/VariMu/VariMuProc.cpp | 518 |
4 files changed, 765 insertions, 0 deletions
diff --git a/plugins/LinuxVST/CMakeLists.txt b/plugins/LinuxVST/CMakeLists.txt index 2624d3f..7c57029 100755 --- a/plugins/LinuxVST/CMakeLists.txt +++ b/plugins/LinuxVST/CMakeLists.txt @@ -44,4 +44,5 @@ add_airwindows_plugin(Spiral2) add_airwindows_plugin(StereoFX) add_airwindows_plugin(TPDFDither) add_airwindows_plugin(VoiceOfTheStarship) +add_airwindows_plugin(VariMu) add_airwindows_plugin(Wider) diff --git a/plugins/LinuxVST/src/VariMu/VariMu.cpp b/plugins/LinuxVST/src/VariMu/VariMu.cpp new file mode 100755 index 0000000..c4d63b2 --- /dev/null +++ b/plugins/LinuxVST/src/VariMu/VariMu.cpp @@ -0,0 +1,159 @@ +/* ======================================== + * VariMu - VariMu.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __VariMu_H +#include "VariMu.h" +#endif + +AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new VariMu(audioMaster);} + +VariMu::VariMu(audioMasterCallback audioMaster) : + AudioEffectX(audioMaster, kNumPrograms, kNumParameters) +{ + + muSpeedAL = 10000; + muSpeedBL = 10000; + muCoefficientAL = 1; + muCoefficientBL = 1; + muVaryL = 1; + previousL = 0.0; + + muSpeedAR = 10000; + muSpeedBR = 10000; + muCoefficientAR = 1; + muCoefficientBR = 1; + muVaryR = 1; + previousR = 0.0; + flip = false; + + A = 0.0; + B = 0.5; + C = 1.0; + D = 1.0; + fpNShapeL = 0.0; + fpNShapeR = 0.0; + //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 +} + +VariMu::~VariMu() {} +VstInt32 VariMu::getVendorVersion () {return 1000;} +void VariMu::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);} +void VariMu::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! + +static float pinParameter(float data) +{ + if (data < 0.0f) return 0.0f; + if (data > 1.0f) return 1.0f; + return data; +} + +VstInt32 VariMu::getChunk (void** data, bool isPreset) +{ + float *chunkData = (float *)calloc(kNumParameters, sizeof(float)); + chunkData[0] = A; + chunkData[1] = B; + chunkData[2] = C; + chunkData[3] = D; + /* 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 VariMu::setChunk (void* data, VstInt32 byteSize, bool isPreset) +{ + float *chunkData = (float *)data; + A = pinParameter(chunkData[0]); + B = pinParameter(chunkData[1]); + C = pinParameter(chunkData[2]); + D = pinParameter(chunkData[3]); + /* We're ignoring byteSize as we found it to be a filthy liar */ + + /* calculate any other fields you need here - you could copy in + code from setParameter() here. */ + return 0; +} + +void VariMu::setParameter(VstInt32 index, float value) { + switch (index) { + case kParamA: A = value; break; + case kParamB: B = value; break; + case kParamC: C = value; break; + case kParamD: D = value; break; + default: throw; // unknown parameter, shouldn't happen! + } +} + +float VariMu::getParameter(VstInt32 index) { + switch (index) { + case kParamA: return A; break; + case kParamB: return B; break; + case kParamC: return C; break; + case kParamD: return D; break; + default: break; // unknown parameter, shouldn't happen! + } return 0.0; //we only need to update the relevant name, this is simple to manage +} + +void VariMu::getParameterName(VstInt32 index, char *text) { + switch (index) { + case kParamA: vst_strncpy (text, "Intensty", kVstMaxParamStrLen); break; + case kParamB: vst_strncpy (text, "Speed", kVstMaxParamStrLen); break; + case kParamC: vst_strncpy (text, "Output", kVstMaxParamStrLen); break; + case kParamD: vst_strncpy (text, "Dry/Wet", kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } //this is our labels for displaying in the VST host +} + +void VariMu::getParameterDisplay(VstInt32 index, char *text) { + switch (index) { + case kParamA: float2string (A, text, kVstMaxParamStrLen); break; + case kParamB: float2string (B, text, kVstMaxParamStrLen); break; + case kParamC: float2string (C, text, kVstMaxParamStrLen); break; + case kParamD: float2string (D, text, kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } //this displays the values and handles 'popups' where it's discrete choices +} + +void VariMu::getParameterLabel(VstInt32 index, char *text) { + switch (index) { + case kParamA: vst_strncpy (text, "", kVstMaxParamStrLen); break; + case kParamB: vst_strncpy (text, "", kVstMaxParamStrLen); break; + case kParamC: vst_strncpy (text, "", kVstMaxParamStrLen); break; + case kParamD: vst_strncpy (text, "", kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } +} + +VstInt32 VariMu::canDo(char *text) +{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know + +bool VariMu::getEffectName(char* name) { + vst_strncpy(name, "VariMu", kVstMaxProductStrLen); return true; +} + +VstPlugCategory VariMu::getPlugCategory() {return kPlugCategEffect;} + +bool VariMu::getProductString(char* text) { + vst_strncpy (text, "airwindows VariMu", kVstMaxProductStrLen); return true; +} + +bool VariMu::getVendorString(char* text) { + vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true; +} diff --git a/plugins/LinuxVST/src/VariMu/VariMu.h b/plugins/LinuxVST/src/VariMu/VariMu.h new file mode 100755 index 0000000..d79dff1 --- /dev/null +++ b/plugins/LinuxVST/src/VariMu/VariMu.h @@ -0,0 +1,87 @@ +/* ======================================== + * VariMu - VariMu.h + * Created 8/12/11 by SPIAdmin + * Copyright (c) 2011 __MyCompanyName__, All rights reserved + * ======================================== */ + +#ifndef __VariMu_H +#define __VariMu_H + +#ifndef __audioeffect__ +#include "audioeffectx.h" +#endif + +#include <set> +#include <string> +#include <math.h> + +enum { + kParamA = 0, + kParamB = 1, + kParamC = 2, + kParamD = 3, + kNumParameters = 4 +}; // + +const int kNumPrograms = 0; +const int kNumInputs = 2; +const int kNumOutputs = 2; +const unsigned long kUniqueId = 'vari'; //Change this to what the AU identity is! + +class VariMu : + public AudioEffectX +{ +public: + VariMu(audioMasterCallback audioMaster); + ~VariMu(); + 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; + + double muVaryL; + double muAttackL; + double muNewSpeedL; + double muSpeedAL; + double muSpeedBL; + double muCoefficientAL; + double muCoefficientBL; + double previousL; + + double muVaryR; + double muAttackR; + double muNewSpeedR; + double muSpeedAR; + double muSpeedBR; + double muCoefficientAR; + double muCoefficientBR; + double previousR; + bool flip; + + long double fpNShapeL; + long double fpNShapeR; + //default stuff + + float A; + float B; + float C; + float D; +}; + +#endif diff --git a/plugins/LinuxVST/src/VariMu/VariMuProc.cpp b/plugins/LinuxVST/src/VariMu/VariMuProc.cpp new file mode 100755 index 0000000..b966cd8 --- /dev/null +++ b/plugins/LinuxVST/src/VariMu/VariMuProc.cpp @@ -0,0 +1,518 @@ +/* ======================================== + * VariMu - VariMu.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __VariMu_H +#include "VariMu.h" +#endif + +void VariMu::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) +{ + float* in1 = inputs[0]; + float* in2 = inputs[1]; + float* out1 = outputs[0]; + float* out2 = outputs[1]; + + double overallscale = 2.0; + overallscale /= 44100.0; + overallscale *= getSampleRate(); + + double threshold = 1.001 - (1.0-pow(1.0-A,3)); + double muMakeupGain = sqrt(1.0 / threshold); + muMakeupGain = (muMakeupGain + sqrt(muMakeupGain))/2.0; + muMakeupGain = sqrt(muMakeupGain); + double outGain = sqrt(muMakeupGain); + //gain settings around threshold + double release = pow((1.15-B),5)*32768.0; + release /= overallscale; + double fastest = sqrt(release); + //speed settings around release + double coefficient; + double output = outGain * C; + double wet = D; + long double squaredSampleL; + long double squaredSampleR; + + // µ µ µ µ µ µ µ µ µ µ µ µ is the kitten song o/~ + + while (--sampleFrames >= 0) + { + long double inputSampleL = *in1; + long double inputSampleR = *in2; + + static int noisesourceL = 0; + static int noisesourceR = 850010; + int residue; + double applyresidue; + + noisesourceL = noisesourceL % 1700021; noisesourceL++; + residue = noisesourceL * noisesourceL; + residue = residue % 170003; residue *= residue; + residue = residue % 17011; residue *= residue; + residue = residue % 1709; residue *= residue; + residue = residue % 173; residue *= residue; + residue = residue % 17; + applyresidue = residue; + applyresidue *= 0.00000001; + applyresidue *= 0.00000001; + inputSampleL += applyresidue; + if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) { + inputSampleL -= applyresidue; + } + + noisesourceR = noisesourceR % 1700021; noisesourceR++; + residue = noisesourceR * noisesourceR; + residue = residue % 170003; residue *= residue; + residue = residue % 17011; residue *= residue; + residue = residue % 1709; residue *= residue; + residue = residue % 173; residue *= residue; + residue = residue % 17; + applyresidue = residue; + applyresidue *= 0.00000001; + applyresidue *= 0.00000001; + inputSampleR += applyresidue; + if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) { + inputSampleR -= applyresidue; + } + //for live air, we always apply the dither noise. Then, if our result is + //effectively digital black, we'll subtract it aVariMu. We want a 'air' hiss + long double drySampleL = inputSampleL; + long double drySampleR = inputSampleR; + + if (fabs(inputSampleL) > fabs(previousL)) squaredSampleL = previousL * previousL; + else squaredSampleL = inputSampleL * inputSampleL; + previousL = inputSampleL; + inputSampleL *= muMakeupGain; + + if (fabs(inputSampleR) > fabs(previousR)) squaredSampleR = previousR * previousR; + else squaredSampleR = inputSampleR * inputSampleR; + previousR = inputSampleR; + inputSampleR *= muMakeupGain; + + //adjust coefficients for L + if (flip) + { + if (fabs(squaredSampleL) > threshold) + { + muVaryL = threshold / fabs(squaredSampleL); + muAttackL = sqrt(fabs(muSpeedAL)); + muCoefficientAL = muCoefficientAL * (muAttackL-1.0); + if (muVaryL < threshold) + { + muCoefficientAL = muCoefficientAL + threshold; + } + else + { + muCoefficientAL = muCoefficientAL + muVaryL; + } + muCoefficientAL = muCoefficientAL / muAttackL; + } + else + { + muCoefficientAL = muCoefficientAL * ((muSpeedAL * muSpeedAL)-1.0); + muCoefficientAL = muCoefficientAL + 1.0; + muCoefficientAL = muCoefficientAL / (muSpeedAL * muSpeedAL); + } + muNewSpeedL = muSpeedAL * (muSpeedAL-1); + muNewSpeedL = muNewSpeedL + fabs(squaredSampleL*release)+fastest; + muSpeedAL = muNewSpeedL / muSpeedAL; + } + else + { + if (fabs(squaredSampleL) > threshold) + { + muVaryL = threshold / fabs(squaredSampleL); + muAttackL = sqrt(fabs(muSpeedBL)); + muCoefficientBL = muCoefficientBL * (muAttackL-1); + if (muVaryL < threshold) + { + muCoefficientBL = muCoefficientBL + threshold; + } + else + { + muCoefficientBL = muCoefficientBL + muVaryL; + } + muCoefficientBL = muCoefficientBL / muAttackL; + } + else + { + muCoefficientBL = muCoefficientBL * ((muSpeedBL * muSpeedBL)-1.0); + muCoefficientBL = muCoefficientBL + 1.0; + muCoefficientBL = muCoefficientBL / (muSpeedBL * muSpeedBL); + } + muNewSpeedL = muSpeedBL * (muSpeedBL-1); + muNewSpeedL = muNewSpeedL + fabs(squaredSampleL*release)+fastest; + muSpeedBL = muNewSpeedL / muSpeedBL; + } + //got coefficients, adjusted speeds for L + + //adjust coefficients for R + if (flip) + { + if (fabs(squaredSampleR) > threshold) + { + muVaryR = threshold / fabs(squaredSampleR); + muAttackR = sqrt(fabs(muSpeedAR)); + muCoefficientAR = muCoefficientAR * (muAttackR-1.0); + if (muVaryR < threshold) + { + muCoefficientAR = muCoefficientAR + threshold; + } + else + { + muCoefficientAR = muCoefficientAR + muVaryR; + } + muCoefficientAR = muCoefficientAR / muAttackR; + } + else + { + muCoefficientAR = muCoefficientAR * ((muSpeedAR * muSpeedAR)-1.0); + muCoefficientAR = muCoefficientAR + 1.0; + muCoefficientAR = muCoefficientAR / (muSpeedAR * muSpeedAR); + } + muNewSpeedR = muSpeedAR * (muSpeedAR-1); + muNewSpeedR = muNewSpeedR + fabs(squaredSampleR*release)+fastest; + muSpeedAR = muNewSpeedR / muSpeedAR; + } + else + { + if (fabs(squaredSampleR) > threshold) + { + muVaryR = threshold / fabs(squaredSampleR); + muAttackR = sqrt(fabs(muSpeedBR)); + muCoefficientBR = muCoefficientBR * (muAttackR-1); + if (muVaryR < threshold) + { + muCoefficientBR = muCoefficientBR + threshold; + } + else + { + muCoefficientBR = muCoefficientBR + muVaryR; + } + muCoefficientBR = muCoefficientBR / muAttackR; + } + else + { + muCoefficientBR = muCoefficientBR * ((muSpeedBR * muSpeedBR)-1.0); + muCoefficientBR = muCoefficientBR + 1.0; + muCoefficientBR = muCoefficientBR / (muSpeedBR * muSpeedBR); + } + muNewSpeedR = muSpeedBR * (muSpeedBR-1); + muNewSpeedR = muNewSpeedR + fabs(squaredSampleR*release)+fastest; + muSpeedBR = muNewSpeedR / muSpeedBR; + } + //got coefficients, adjusted speeds for R + + if (flip) + { + coefficient = (muCoefficientAL + pow(muCoefficientAL,2))/2.0; + inputSampleL *= coefficient; + coefficient = (muCoefficientAR + pow(muCoefficientAR,2))/2.0; + inputSampleR *= coefficient; + } + else + { + coefficient = (muCoefficientBL + pow(muCoefficientBL,2))/2.0; + inputSampleL *= coefficient; + coefficient = (muCoefficientBR + pow(muCoefficientBR,2))/2.0; + inputSampleR *= coefficient; + } + //applied compression with vari-vari-µ-µ-µ-µ-µ-µ-is-the-kitten-song o/~ + //applied gain correction to control output level- tends to constrain sound rather than inflate it + flip = !flip; + + if (output < 1.0) { + inputSampleL *= output; + inputSampleR *= output; + } + if (wet < 1.0) { + inputSampleL = (drySampleL * (1.0-wet)) + (inputSampleL * wet); + inputSampleR = (drySampleR * (1.0-wet)) + (inputSampleR * wet); + } + //nice little output stage template: if we have another scale of floating point + //number, we really don't want to meaninglessly multiply that by 1.0. + + //noise shaping to 32-bit floating point + float fpTemp = inputSampleL; + fpNShapeL += (inputSampleL-fpTemp); + inputSampleL += fpNShapeL; + //if this confuses you look at the wordlength for fpTemp :) + fpTemp = inputSampleR; + fpNShapeR += (inputSampleR-fpTemp); + inputSampleR += fpNShapeR; + //for deeper space and warmth, we try a non-oscillating noise shaping + //that is kind of ruthless: it will forever retain the rounding errors + //except we'll dial it back a hair at the end of every buffer processed + //end noise shaping on 32 bit output + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } + fpNShapeL *= 0.999999; + fpNShapeR *= 0.999999; + //we will just delicately dial back the FP noise shaping, not even every sample + //this is a good place to put subtle 'no runaway' calculations, though bear in mind + //that it will be called more often when you use shorter sample buffers in the DAW. + //So, very low latency operation will call these calculations more often. +} + +void VariMu::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) +{ + double* in1 = inputs[0]; + double* in2 = inputs[1]; + double* out1 = outputs[0]; + double* out2 = outputs[1]; + + double overallscale = 2.0; + overallscale /= 44100.0; + overallscale *= getSampleRate(); + + double threshold = 1.001 - (1.0-pow(1.0-A,3)); + double muMakeupGain = sqrt(1.0 / threshold); + muMakeupGain = (muMakeupGain + sqrt(muMakeupGain))/2.0; + muMakeupGain = sqrt(muMakeupGain); + double outGain = sqrt(muMakeupGain); + //gain settings around threshold + double release = pow((1.15-B),5)*32768.0; + release /= overallscale; + double fastest = sqrt(release); + //speed settings around release + double coefficient; + double output = outGain * C; + double wet = D; + long double squaredSampleL; + long double squaredSampleR; + + // µ µ µ µ µ µ µ µ µ µ µ µ is the kitten song o/~ + + while (--sampleFrames >= 0) + { + long double inputSampleL = *in1; + long double inputSampleR = *in2; + + static int noisesourceL = 0; + static int noisesourceR = 850010; + int residue; + double applyresidue; + + noisesourceL = noisesourceL % 1700021; noisesourceL++; + residue = noisesourceL * noisesourceL; + residue = residue % 170003; residue *= residue; + residue = residue % 17011; residue *= residue; + residue = residue % 1709; residue *= residue; + residue = residue % 173; residue *= residue; + residue = residue % 17; + applyresidue = residue; + applyresidue *= 0.00000001; + applyresidue *= 0.00000001; + inputSampleL += applyresidue; + if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) { + inputSampleL -= applyresidue; + } + + noisesourceR = noisesourceR % 1700021; noisesourceR++; + residue = noisesourceR * noisesourceR; + residue = residue % 170003; residue *= residue; + residue = residue % 17011; residue *= residue; + residue = residue % 1709; residue *= residue; + residue = residue % 173; residue *= residue; + residue = residue % 17; + applyresidue = residue; + applyresidue *= 0.00000001; + applyresidue *= 0.00000001; + inputSampleR += applyresidue; + if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) { + inputSampleR -= applyresidue; + } + //for live air, we always apply the dither noise. Then, if our result is + //effectively digital black, we'll subtract it aVariMu. We want a 'air' hiss + long double drySampleL = inputSampleL; + long double drySampleR = inputSampleR; + + if (fabs(inputSampleL) > fabs(previousL)) squaredSampleL = previousL * previousL; + else squaredSampleL = inputSampleL * inputSampleL; + previousL = inputSampleL; + inputSampleL *= muMakeupGain; + + if (fabs(inputSampleR) > fabs(previousR)) squaredSampleR = previousR * previousR; + else squaredSampleR = inputSampleR * inputSampleR; + previousR = inputSampleR; + inputSampleR *= muMakeupGain; + + //adjust coefficients for L + if (flip) + { + if (fabs(squaredSampleL) > threshold) + { + muVaryL = threshold / fabs(squaredSampleL); + muAttackL = sqrt(fabs(muSpeedAL)); + muCoefficientAL = muCoefficientAL * (muAttackL-1.0); + if (muVaryL < threshold) + { + muCoefficientAL = muCoefficientAL + threshold; + } + else + { + muCoefficientAL = muCoefficientAL + muVaryL; + } + muCoefficientAL = muCoefficientAL / muAttackL; + } + else + { + muCoefficientAL = muCoefficientAL * ((muSpeedAL * muSpeedAL)-1.0); + muCoefficientAL = muCoefficientAL + 1.0; + muCoefficientAL = muCoefficientAL / (muSpeedAL * muSpeedAL); + } + muNewSpeedL = muSpeedAL * (muSpeedAL-1); + muNewSpeedL = muNewSpeedL + fabs(squaredSampleL*release)+fastest; + muSpeedAL = muNewSpeedL / muSpeedAL; + } + else + { + if (fabs(squaredSampleL) > threshold) + { + muVaryL = threshold / fabs(squaredSampleL); + muAttackL = sqrt(fabs(muSpeedBL)); + muCoefficientBL = muCoefficientBL * (muAttackL-1); + if (muVaryL < threshold) + { + muCoefficientBL = muCoefficientBL + threshold; + } + else + { + muCoefficientBL = muCoefficientBL + muVaryL; + } + muCoefficientBL = muCoefficientBL / muAttackL; + } + else + { + muCoefficientBL = muCoefficientBL * ((muSpeedBL * muSpeedBL)-1.0); + muCoefficientBL = muCoefficientBL + 1.0; + muCoefficientBL = muCoefficientBL / (muSpeedBL * muSpeedBL); + } + muNewSpeedL = muSpeedBL * (muSpeedBL-1); + muNewSpeedL = muNewSpeedL + fabs(squaredSampleL*release)+fastest; + muSpeedBL = muNewSpeedL / muSpeedBL; + } + //got coefficients, adjusted speeds for L + + //adjust coefficients for R + if (flip) + { + if (fabs(squaredSampleR) > threshold) + { + muVaryR = threshold / fabs(squaredSampleR); + muAttackR = sqrt(fabs(muSpeedAR)); + muCoefficientAR = muCoefficientAR * (muAttackR-1.0); + if (muVaryR < threshold) + { + muCoefficientAR = muCoefficientAR + threshold; + } + else + { + muCoefficientAR = muCoefficientAR + muVaryR; + } + muCoefficientAR = muCoefficientAR / muAttackR; + } + else + { + muCoefficientAR = muCoefficientAR * ((muSpeedAR * muSpeedAR)-1.0); + muCoefficientAR = muCoefficientAR + 1.0; + muCoefficientAR = muCoefficientAR / (muSpeedAR * muSpeedAR); + } + muNewSpeedR = muSpeedAR * (muSpeedAR-1); + muNewSpeedR = muNewSpeedR + fabs(squaredSampleR*release)+fastest; + muSpeedAR = muNewSpeedR / muSpeedAR; + } + else + { + if (fabs(squaredSampleR) > threshold) + { + muVaryR = threshold / fabs(squaredSampleR); + muAttackR = sqrt(fabs(muSpeedBR)); + muCoefficientBR = muCoefficientBR * (muAttackR-1); + if (muVaryR < threshold) + { + muCoefficientBR = muCoefficientBR + threshold; + } + else + { + muCoefficientBR = muCoefficientBR + muVaryR; + } + muCoefficientBR = muCoefficientBR / muAttackR; + } + else + { + muCoefficientBR = muCoefficientBR * ((muSpeedBR * muSpeedBR)-1.0); + muCoefficientBR = muCoefficientBR + 1.0; + muCoefficientBR = muCoefficientBR / (muSpeedBR * muSpeedBR); + } + muNewSpeedR = muSpeedBR * (muSpeedBR-1); + muNewSpeedR = muNewSpeedR + fabs(squaredSampleR*release)+fastest; + muSpeedBR = muNewSpeedR / muSpeedBR; + } + //got coefficients, adjusted speeds for R + + if (flip) + { + coefficient = (muCoefficientAL + pow(muCoefficientAL,2))/2.0; + inputSampleL *= coefficient; + coefficient = (muCoefficientAR + pow(muCoefficientAR,2))/2.0; + inputSampleR *= coefficient; + } + else + { + coefficient = (muCoefficientBL + pow(muCoefficientBL,2))/2.0; + inputSampleL *= coefficient; + coefficient = (muCoefficientBR + pow(muCoefficientBR,2))/2.0; + inputSampleR *= coefficient; + } + //applied compression with vari-vari-µ-µ-µ-µ-µ-µ-is-the-kitten-song o/~ + //applied gain correction to control output level- tends to constrain sound rather than inflate it + flip = !flip; + + if (output < 1.0) { + inputSampleL *= output; + inputSampleR *= output; + } + if (wet < 1.0) { + inputSampleL = (drySampleL * (1.0-wet)) + (inputSampleL * wet); + inputSampleR = (drySampleR * (1.0-wet)) + (inputSampleR * wet); + } + //nice little output stage template: if we have another scale of floating point + //number, we really don't want to meaninglessly multiply that by 1.0. + + //noise shaping to 64-bit floating point + double fpTemp = inputSampleL; + fpNShapeL += (inputSampleL-fpTemp); + inputSampleL += fpNShapeL; + //if this confuses you look at the wordlength for fpTemp :) + fpTemp = inputSampleR; + fpNShapeR += (inputSampleR-fpTemp); + inputSampleR += fpNShapeR; + //for deeper space and warmth, we try a non-oscillating noise shaping + //that is kind of ruthless: it will forever retain the rounding errors + //except we'll dial it back a hair at the end of every buffer processed + //end noise shaping on 64 bit output + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } + fpNShapeL *= 0.999999; + fpNShapeR *= 0.999999; + //we will just delicately dial back the FP noise shaping, not even every sample + //this is a good place to put subtle 'no runaway' calculations, though bear in mind + //that it will be called more often when you use shorter sample buffers in the DAW. + //So, very low latency operation will call these calculations more often. +} |