diff options
author | Chris Johnson <jinx6568@sover.net> | 2019-03-17 17:59:24 -0400 |
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committer | Chris Johnson <jinx6568@sover.net> | 2019-03-17 17:59:24 -0400 |
commit | 3e70ca9a520599f87e0fd48491273c6d6f870a67 (patch) | |
tree | f40c5baa266e15a1343de5020908e52cf0dd2a8e /plugins/LinuxVST | |
parent | 8a8670d2e47cb2ec3a82d6bf11942488303ae23f (diff) | |
download | airwindows-lv2-port-3e70ca9a520599f87e0fd48491273c6d6f870a67.tar.gz airwindows-lv2-port-3e70ca9a520599f87e0fd48491273c6d6f870a67.tar.bz2 airwindows-lv2-port-3e70ca9a520599f87e0fd48491273c6d6f870a67.zip |
Compresaturator
Diffstat (limited to 'plugins/LinuxVST')
-rwxr-xr-x | plugins/LinuxVST/CMakeLists.txt | 1 | ||||
-rwxr-xr-x | plugins/LinuxVST/src/Compresaturator/Compresaturator.cpp | 158 | ||||
-rwxr-xr-x | plugins/LinuxVST/src/Compresaturator/Compresaturator.h | 80 | ||||
-rwxr-xr-x | plugins/LinuxVST/src/Compresaturator/CompresaturatorProc.cpp | 438 |
4 files changed, 677 insertions, 0 deletions
diff --git a/plugins/LinuxVST/CMakeLists.txt b/plugins/LinuxVST/CMakeLists.txt index a8aaa42..f5c8579 100755 --- a/plugins/LinuxVST/CMakeLists.txt +++ b/plugins/LinuxVST/CMakeLists.txt @@ -35,6 +35,7 @@ add_airwindows_plugin(Chorus) add_airwindows_plugin(ChorusEnsemble) add_airwindows_plugin(ClipOnly) add_airwindows_plugin(Cojones) +add_airwindows_plugin(Compresaturator) add_airwindows_plugin(Console4Buss) add_airwindows_plugin(Console4Channel) add_airwindows_plugin(Console5Buss) diff --git a/plugins/LinuxVST/src/Compresaturator/Compresaturator.cpp b/plugins/LinuxVST/src/Compresaturator/Compresaturator.cpp new file mode 100755 index 0000000..e975f9c --- /dev/null +++ b/plugins/LinuxVST/src/Compresaturator/Compresaturator.cpp @@ -0,0 +1,158 @@ +/* ======================================== + * Compresaturator - Compresaturator.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __Compresaturator_H +#include "Compresaturator.h" +#endif + +AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new Compresaturator(audioMaster);} + +Compresaturator::Compresaturator(audioMasterCallback audioMaster) : + AudioEffectX(audioMaster, kNumPrograms, kNumParameters) +{ + A = 0.5; //-12 to +12 dB + B = 0.5; //0 to 100% + C = 0.5; //50 to 5000 samples, default 500 + D = 1.0; + E = 1.0; + + for(int count = 0; count < 10990; count++) {dL[count] = 0.0; dR[count] = 0.0;} + dCount = 0; + lastWidthL = 500; + padFactorL = 0; + lastWidthR = 500; + padFactorR = 0; + + fpd = 17; + //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 +} + +Compresaturator::~Compresaturator() {} +VstInt32 Compresaturator::getVendorVersion () {return 1000;} +void Compresaturator::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);} +void Compresaturator::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 Compresaturator::getChunk (void** data, bool isPreset) +{ + float *chunkData = (float *)calloc(kNumParameters, sizeof(float)); + chunkData[0] = A; + chunkData[1] = B; + chunkData[2] = C; + chunkData[3] = D; + chunkData[4] = E; + /* 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 Compresaturator::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]); + E = pinParameter(chunkData[4]); + /* 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 Compresaturator::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; + case kParamE: E = value; break; + default: throw; // unknown parameter, shouldn't happen! + } +} + +float Compresaturator::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; + case kParamE: return E; 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 Compresaturator::getParameterName(VstInt32 index, char *text) { + switch (index) { + case kParamA: vst_strncpy (text, "Drive", kVstMaxParamStrLen); break; + case kParamB: vst_strncpy (text, "Clamp", kVstMaxParamStrLen); break; + case kParamC: vst_strncpy (text, "Expand", kVstMaxParamStrLen); break; + case kParamD: vst_strncpy (text, "Output", kVstMaxParamStrLen); break; + case kParamE: 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 Compresaturator::getParameterDisplay(VstInt32 index, char *text) { + switch (index) { + case kParamA: float2string ((A*24.0)-12.0, text, kVstMaxParamStrLen); break; + case kParamB: float2string (B*100, text, kVstMaxParamStrLen); break; + case kParamC: float2string ((C*C*5000), text, kVstMaxParamStrLen); break; + case kParamD: float2string (D, text, kVstMaxParamStrLen); break; + case kParamE: float2string (E, text, kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } //this displays the values and handles 'popups' where it's discrete choices +} + +void Compresaturator::getParameterLabel(VstInt32 index, char *text) { + switch (index) { + case kParamA: vst_strncpy (text, "dB", kVstMaxParamStrLen); break; + case kParamB: vst_strncpy (text, "%", kVstMaxParamStrLen); break; + case kParamC: vst_strncpy (text, "sa", kVstMaxParamStrLen); break; + case kParamD: vst_strncpy (text, "", kVstMaxParamStrLen); break; + case kParamE: vst_strncpy (text, "", kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } +} + +VstInt32 Compresaturator::canDo(char *text) +{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know + +bool Compresaturator::getEffectName(char* name) { + vst_strncpy(name, "Compresaturator", kVstMaxProductStrLen); return true; +} + +VstPlugCategory Compresaturator::getPlugCategory() {return kPlugCategEffect;} + +bool Compresaturator::getProductString(char* text) { + vst_strncpy (text, "airwindows Compresaturator", kVstMaxProductStrLen); return true; +} + +bool Compresaturator::getVendorString(char* text) { + vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true; +} diff --git a/plugins/LinuxVST/src/Compresaturator/Compresaturator.h b/plugins/LinuxVST/src/Compresaturator/Compresaturator.h new file mode 100755 index 0000000..6241458 --- /dev/null +++ b/plugins/LinuxVST/src/Compresaturator/Compresaturator.h @@ -0,0 +1,80 @@ +/* ======================================== + * Compresaturator - Compresaturator.h + * Created 8/12/11 by SPIAdmin + * Copyright (c) 2011 __MyCompanyName__, All rights reserved + * ======================================== */ + +#ifndef __Compresaturator_H +#define __Compresaturator_H + +#ifndef __audioeffect__ +#include "audioeffectx.h" +#endif + +#include <set> +#include <string> +#include <math.h> + +enum { + kParamA = 0, + kParamB = 1, + kParamC = 2, + kParamD = 3, + kParamE = 4, + kNumParameters = 5 +}; // + +const int kNumPrograms = 0; +const int kNumInputs = 2; +const int kNumOutputs = 2; +const unsigned long kUniqueId = 'cmsr'; //Change this to what the AU identity is! + +class Compresaturator : + public AudioEffectX +{ +public: + Compresaturator(audioMasterCallback audioMaster); + ~Compresaturator(); + 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; + + uint32_t fpd; + //default stuff + + int dCount; + + float dL[11000]; + int lastWidthL; + double padFactorL; + + float dR[11000]; + int lastWidthR; + double padFactorR; + + float A; + float B; + float C; + float D; + float E; //parameters. Always 0-1, and we scale/alter them elsewhere. + +}; + +#endif diff --git a/plugins/LinuxVST/src/Compresaturator/CompresaturatorProc.cpp b/plugins/LinuxVST/src/Compresaturator/CompresaturatorProc.cpp new file mode 100755 index 0000000..f39d52e --- /dev/null +++ b/plugins/LinuxVST/src/Compresaturator/CompresaturatorProc.cpp @@ -0,0 +1,438 @@ +/* ======================================== + * Compresaturator - Compresaturator.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __Compresaturator_H +#include "Compresaturator.h" +#endif + +void Compresaturator::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) +{ + float* in1 = inputs[0]; + float* in2 = inputs[1]; + float* out1 = outputs[0]; + float* out2 = outputs[1]; + + double inputgain = pow(10.0,((A*24.0)-12.0)/20.0); + double satComp = B*2.0; + int widestRange = C*C*C*5000; + if (widestRange < 50) widestRange = 50; + satComp += (((double)widestRange/3000.0)*satComp); + //set the max wideness of comp zone, minimum range boosted (too much?) + double output = D; + double wet = E; + + 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 again. We want a 'air' hiss + long double drySampleL = inputSampleL; + long double drySampleR = inputSampleR; + + if (dCount < 1 || dCount > 5000) {dCount = 5000;} + + //begin drive L + long double temp = inputSampleL; + double variSpeed = 1.0 + ((padFactorL/lastWidthL)*satComp); + if (variSpeed < 1.0) variSpeed = 1.0; + double totalgain = inputgain / variSpeed; + if (totalgain != 1.0) { + inputSampleL *= totalgain; + if (totalgain < 1.0) { + temp *= totalgain; + //no boosting beyond unity please + } + } + + long double bridgerectifier = fabs(inputSampleL); + double overspill = 0; + int targetWidth = widestRange; + //we now have defaults and an absolute input value to work with + if (bridgerectifier < 0.01) padFactorL *= 0.9999; + //in silences we bring back padFactor if it got out of hand + if (bridgerectifier > 1.57079633) { + bridgerectifier = 1.57079633; + targetWidth = 8; + } + //if our output's gone beyond saturating to distorting, we begin chasing the + //buffer size smaller. Anytime we don't have that, we expand (smoothest sound, only adding to an increasingly subdivided buffer) + + bridgerectifier = sin(bridgerectifier); + if (inputSampleL > 0) { + inputSampleL = bridgerectifier; + overspill = temp - bridgerectifier; + } + + if (inputSampleL < 0) { + inputSampleL = -bridgerectifier; + overspill = (-temp) - bridgerectifier; + } + //drive section L + + //begin drive R + temp = inputSampleR; + variSpeed = 1.0 + ((padFactorR/lastWidthR)*satComp); + if (variSpeed < 1.0) variSpeed = 1.0; + totalgain = inputgain / variSpeed; + if (totalgain != 1.0) { + inputSampleR *= totalgain; + if (totalgain < 1.0) { + temp *= totalgain; + //no boosting beyond unity please + } + } + + bridgerectifier = fabs(inputSampleR); + overspill = 0; + targetWidth = widestRange; + //we now have defaults and an absolute input value to work with + if (bridgerectifier < 0.01) padFactorR *= 0.9999; + //in silences we bring back padFactor if it got out of hand + if (bridgerectifier > 1.57079633) { + bridgerectifier = 1.57079633; + targetWidth = 8; + } + //if our output's gone beyond saturating to distorting, we begin chasing the + //buffer size smaller. Anytime we don't have that, we expand (smoothest sound, only adding to an increasingly subdivided buffer) + + bridgerectifier = sin(bridgerectifier); + if (inputSampleR > 0) { + inputSampleR = bridgerectifier; + overspill = temp - bridgerectifier; + } + + if (inputSampleR < 0) { + inputSampleR = -bridgerectifier; + overspill = (-temp) - bridgerectifier; + } + //drive section R + + + dL[dCount + 5000] = dL[dCount] = overspill * satComp; + dR[dCount + 5000] = dR[dCount] = overspill * satComp; + dCount--; + //we now have a big buffer to draw from, which is always positive amount of overspill + + //begin pad L + padFactorL += dL[dCount]; + double randy = (rand()/(double)RAND_MAX); + if ((targetWidth*randy) > lastWidthL) { + //we are expanding the buffer so we don't remove this trailing sample + lastWidthL += 1; + } else { + padFactorL -= dL[dCount+lastWidthL]; + //zero change, or target is smaller and we are shrinking + if (targetWidth < lastWidthL) { + lastWidthL -= 1; + if (lastWidthL < 2) lastWidthL = 2; + //sanity check as randy can give us target zero + padFactorL -= dL[dCount+lastWidthL]; + } + } + //variable attack/release speed more rapid as comp intensity increases + //implemented in a way where we're repeatedly not altering the buffer as it expands, which makes the comp artifacts smoother + if (padFactorL < 0) padFactorL = 0; + //end pad L + + //begin pad R + padFactorR += dR[dCount]; + randy = (rand()/(double)RAND_MAX); + if ((targetWidth*randy) > lastWidthR) { + //we are expanding the buffer so we don't remove this trailing sample + lastWidthR += 1; + } else { + padFactorR -= dR[dCount+lastWidthR]; + //zero change, or target is smaller and we are shrinking + if (targetWidth < lastWidthR) { + lastWidthR -= 1; + if (lastWidthR < 2) lastWidthR = 2; + //sanity check as randy can give us target zero + padFactorR -= dR[dCount+lastWidthR]; + } + } + //variable attack/release speed more rapid as comp intensity increases + //implemented in a way where we're repeatedly not altering the buffer as it expands, which makes the comp artifacts smoother + if (padFactorR < 0) padFactorR = 0; + //end pad R + + if (output < 1.0) { + inputSampleL *= output; + inputSampleR *= output; + } + + if (wet < 1.0) { + inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet)); + inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet)); + } + + //begin 32 bit stereo floating point dither + int expon; frexpf((float)inputSampleL, &expon); + fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; + inputSampleL += static_cast<int32_t>(fpd) * 5.960464655174751e-36L * pow(2,expon+62); + frexpf((float)inputSampleR, &expon); + fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; + inputSampleR += static_cast<int32_t>(fpd) * 5.960464655174751e-36L * pow(2,expon+62); + //end 32 bit stereo floating point dither + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +} + +void Compresaturator::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) +{ + double* in1 = inputs[0]; + double* in2 = inputs[1]; + double* out1 = outputs[0]; + double* out2 = outputs[1]; + + double inputgain = pow(10.0,((A*24.0)-12.0)/20.0); + double satComp = B*2.0; + int widestRange = C*C*5000; + if (widestRange < 50) widestRange = 50; + satComp += (((double)widestRange/3000.0)*satComp); + //set the max wideness of comp zone, minimum range boosted (too much?) + double output = D; + double wet = E; + + 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 again. We want a 'air' hiss + long double drySampleL = inputSampleL; + long double drySampleR = inputSampleR; + + if (dCount < 1 || dCount > 5000) {dCount = 5000;} + + //begin L + long double temp = inputSampleL; + double variSpeed = 1.0 + ((padFactorL/lastWidthL)*satComp); + if (variSpeed < 1.0) variSpeed = 1.0; + double totalgain = inputgain / variSpeed; + if (totalgain != 1.0) { + inputSampleL *= totalgain; + if (totalgain < 1.0) { + temp *= totalgain; + //no boosting beyond unity please + } + } + + long double bridgerectifier = fabs(inputSampleL); + double overspill = 0; + int targetWidth = widestRange; + //we now have defaults and an absolute input value to work with + if (bridgerectifier < 0.01) padFactorL *= 0.9999; + //in silences we bring back padFactor if it got out of hand + if (bridgerectifier > 1.57079633) { + bridgerectifier = 1.57079633; + targetWidth = 8; + } + //if our output's gone beyond saturating to distorting, we begin chasing the + //buffer size smaller. Anytime we don't have that, we expand (smoothest sound, only adding to an increasingly subdivided buffer) + + bridgerectifier = sin(bridgerectifier); + if (inputSampleL > 0) { + inputSampleL = bridgerectifier; + overspill = temp - bridgerectifier; + } + + if (inputSampleL < 0) { + inputSampleL = -bridgerectifier; + overspill = (-temp) - bridgerectifier; + } + //drive section + + dL[dCount + 5000] = dL[dCount] = overspill * satComp; + //we now have a big buffer to draw from, which is always positive amount of overspill + + padFactorL += dL[dCount]; + double randy = (rand()/(double)RAND_MAX); + if ((targetWidth*randy) > lastWidthL) { + //we are expanding the buffer so we don't remove this trailing sample + lastWidthL += 1; + } else { + padFactorL -= dL[dCount+lastWidthL]; + //zero change, or target is smaller and we are shrinking + if (targetWidth < lastWidthL) { + lastWidthL -= 1; + if (lastWidthL < 2) lastWidthL = 2; + //sanity check as randy can give us target zero + padFactorL -= dL[dCount+lastWidthL]; + } + } + //variable attack/release speed more rapid as comp intensity increases + //implemented in a way where we're repeatedly not altering the buffer as it expands, which makes the comp artifacts smoother + if (padFactorL < 0) padFactorL = 0; + //end L + + //begin R + temp = inputSampleR; + variSpeed = 1.0 + ((padFactorR/lastWidthR)*satComp); + if (variSpeed < 1.0) variSpeed = 1.0; + totalgain = inputgain / variSpeed; + if (totalgain != 1.0) { + inputSampleR *= totalgain; + if (totalgain < 1.0) { + temp *= totalgain; + //no boosting beyond unity please + } + } + + bridgerectifier = fabs(inputSampleR); + overspill = 0; + targetWidth = widestRange; + //we now have defaults and an absolute input value to work with + if (bridgerectifier < 0.01) padFactorR *= 0.9999; + //in silences we bring back padFactor if it got out of hand + if (bridgerectifier > 1.57079633) { + bridgerectifier = 1.57079633; + targetWidth = 8; + } + //if our output's gone beyond saturating to distorting, we begin chasing the + //buffer size smaller. Anytime we don't have that, we expand (smoothest sound, only adding to an increasingly subdivided buffer) + + bridgerectifier = sin(bridgerectifier); + if (inputSampleR > 0) { + inputSampleR = bridgerectifier; + overspill = temp - bridgerectifier; + } + + if (inputSampleR < 0) { + inputSampleR = -bridgerectifier; + overspill = (-temp) - bridgerectifier; + } + //drive section + + dR[dCount + 5000] = dR[dCount] = overspill * satComp; + //we now have a big buffer to draw from, which is always positive amount of overspill + + padFactorR += dR[dCount]; + randy = (rand()/(double)RAND_MAX); + if ((targetWidth*randy) > lastWidthR) { + //we are expanding the buffer so we don't remove this trailing sample + lastWidthR += 1; + } else { + padFactorR -= dR[dCount+lastWidthR]; + //zero change, or target is smaller and we are shrinking + if (targetWidth < lastWidthR) { + lastWidthR -= 1; + if (lastWidthR < 2) lastWidthR = 2; + //sanity check as randy can give us target zero + padFactorR -= dR[dCount+lastWidthR]; + } + } + //variable attack/release speed more rapid as comp intensity increases + //implemented in a way where we're repeatedly not altering the buffer as it expands, which makes the comp artifacts smoother + if (padFactorR < 0) padFactorR = 0; + //end R + + dCount--; + + if (output < 1.0) { + inputSampleL *= output; + inputSampleR *= output; + } + + if (wet < 1.0) { + inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet)); + inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet)); + } + + //begin 64 bit stereo floating point dither + int expon; frexp((double)inputSampleL, &expon); + fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; + inputSampleL += static_cast<int32_t>(fpd) * 1.110223024625156e-44L * pow(2,expon+62); + frexp((double)inputSampleR, &expon); + fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; + inputSampleR += static_cast<int32_t>(fpd) * 1.110223024625156e-44L * pow(2,expon+62); + //end 64 bit stereo floating point dither + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +} |