Channel5

3 files changed, 514 insertions, 0 deletions

diff --git a/plugins/LinuxVST/src/Channel5/Channel5.cpp b/plugins/LinuxVST/src/Channel5/Channel5.cpp
new file mode 100755
index 0000000..26b592a
--- /dev/null
+++ b/plugins/LinuxVST/src/Channel5/Channel5.cpp
@@ -0,0 +1,161 @@
+/* ========================================
+ *  Channel5 - Channel5.h
+ *  Copyright (c) 2016 airwindows, All rights reserved
+ * ======================================== */
+
+#ifndef __Channel5_H
+#include "Channel5.h"
+#endif
+
+AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new Channel5(audioMaster);}
+
+Channel5::Channel5(audioMasterCallback audioMaster) :
+    AudioEffectX(audioMaster, kNumPrograms, kNumParameters)
+{
+	consoletype = 0.0;
+	drive = 0.0;
+	output = 1.0;
+	fpNShapeL = 0.0;
+	fpNShapeR = 0.0;
+	fpFlip = true;
+	iirSampleLA = 0.0;
+	iirSampleRA = 0.0;
+	iirSampleLB = 0.0;
+	iirSampleRB = 0.0;
+	lastSampleL = 0.0;
+	lastSampleR = 0.0;
+	iirAmount = 0.005832;
+	threshold = 0.33362176; //instantiating with Neve values
+	//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
+}
+
+Channel5::~Channel5() {}
+VstInt32 Channel5::getVendorVersion () {return 1000;}
+void Channel5::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);}
+void Channel5::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 Channel5::getChunk (void** data, bool isPreset)
+{
+	float *chunkData = (float *)calloc(kNumParameters, sizeof(float));
+	chunkData[0] = consoletype;
+	chunkData[1] = drive;
+	chunkData[2] = output;
+	/* 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 Channel5::setChunk (void* data, VstInt32 byteSize, bool isPreset)
+{	
+	float *chunkData = (float *)data;
+	consoletype = pinParameter(chunkData[0]);
+	drive = pinParameter(chunkData[1]);
+	output = pinParameter(chunkData[2]);
+	/* 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 Channel5::setParameter(VstInt32 index, float value) {
+    switch (index) {
+        case kParamA: consoletype = value; break;
+        case kParamB: drive = value; break;
+        case kParamC: output = value; break;
+        default: throw; // unknown parameter, shouldn't happen!
+    }
+	//we can also set other defaults here, and do calculations that only have to happen
+	//once when parameters actually change. Here is the 'popup' setting its (global) values.
+	//variables can also be set in the processreplacing loop, and there they'll be set every buffersize
+	//here they're set when a parameter's actually changed, which should be less frequent, but
+	//you must use global variables in the Channel4.h file to do it.
+	switch((VstInt32)( consoletype * 2.999 ))
+	{  
+		case 0: iirAmount = 0.005832; threshold = 0.33362176; break; //Neve
+		case 1: iirAmount = 0.004096; threshold = 0.59969536; break; //API
+		case 2: iirAmount = 0.004913; threshold = 0.84934656; break; //SSL			
+		default: break; //should not happen
+	}
+}
+
+float Channel5::getParameter(VstInt32 index) {
+    switch (index) {
+        case kParamA: return consoletype; break;
+        case kParamB: return drive; break;
+        case kParamC: return output; 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 Channel5::getParameterName(VstInt32 index, char *text) {
+    switch (index) {
+        case kParamA: vst_strncpy (text, "Console Type", kVstMaxParamStrLen); break;
+		case kParamB: vst_strncpy (text, "Drive", kVstMaxParamStrLen); break;
+		case kParamC: vst_strncpy (text, "Output", kVstMaxParamStrLen); break;
+        default: break; // unknown parameter, shouldn't happen!
+    } //this is our labels for displaying in the VST host
+}
+
+void Channel5::getParameterDisplay(VstInt32 index, char *text) {
+    switch (index) {
+        case kParamA: switch((VstInt32)( consoletype * 2.999 )) //0 to almost edge of # of params
+		{	case 0: vst_strncpy (text, "Neve", kVstMaxParamStrLen); break;
+			case 1: vst_strncpy (text, "API", kVstMaxParamStrLen); break;
+			case 2: vst_strncpy (text, "SSL", kVstMaxParamStrLen); break;
+			default: break; // unknown parameter, shouldn't happen!
+		} break; //completed consoletype 'popup' parameter, exit
+		case kParamB: int2string ((VstInt32)(drive*100), text, kVstMaxParamStrLen); break;
+		case kParamC: float2string (output, text, kVstMaxParamStrLen); break;
+        default: break; // unknown parameter, shouldn't happen!
+	} //this displays the values and handles 'popups' where it's discrete choices
+}
+
+void Channel5::getParameterLabel(VstInt32 index, char *text) {
+    switch (index) {
+        case kParamA: vst_strncpy (text, "", kVstMaxParamStrLen); break;
+        case kParamB: vst_strncpy (text, "%", kVstMaxParamStrLen); break; //the percent
+        case kParamC: vst_strncpy (text, "", kVstMaxParamStrLen); break; //the percent
+        default: break; // unknown parameter, shouldn't happen!
+    }
+}
+
+VstInt32 Channel5::canDo(char *text) 
+{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know
+
+bool Channel5::getEffectName(char* name) {
+    vst_strncpy(name, "Channel5", kVstMaxProductStrLen); return true;
+}
+
+VstPlugCategory Channel5::getPlugCategory() {return kPlugCategEffect;}
+
+bool Channel5::getProductString(char* text) {
+  	vst_strncpy (text, "airwindows Channel5", kVstMaxProductStrLen); return true;
+}
+
+bool Channel5::getVendorString(char* text) {
+  	vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true;
+}
diff --git a/plugins/LinuxVST/src/Channel5/Channel5.h b/plugins/LinuxVST/src/Channel5/Channel5.h
new file mode 100755
index 0000000..07516f7
--- /dev/null
+++ b/plugins/LinuxVST/src/Channel5/Channel5.h
@@ -0,0 +1,75 @@
+/* ========================================
+ *  Channel5 - Channel5.h
+ *  Created 8/12/11 by SPIAdmin 
+ *  Copyright (c) 2011 __MyCompanyName__, All rights reserved
+ * ======================================== */
+
+#ifndef __Channel5_H
+#define __Channel5_H
+
+#ifndef __audioeffect__
+#include "audioeffectx.h"
+#endif
+
+#include <set>
+#include <string>
+#include <math.h>
+
+enum {
+	kParamA = 0,
+	kParamB = 1,
+	kParamC = 2,
+  kNumParameters = 3
+}; //
+
+const int kNumPrograms = 0;
+const int kNumInputs = 2;
+const int kNumOutputs = 2;
+const unsigned long kUniqueId = 'cha5';    //Change this to what the AU identity is!
+
+class Channel5 : 
+    public AudioEffectX 
+{
+public:
+    Channel5(audioMasterCallback audioMaster);
+    ~Channel5();
+    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 fpNShapeL;
+	long double fpNShapeR;
+	bool fpFlip;
+	//default stuff
+	double iirSampleLA;
+	double iirSampleRA;
+	double iirSampleLB;
+	double iirSampleRB;
+	double lastSampleL;
+	double lastSampleR;
+	double iirAmount;
+	double threshold;
+	
+    float consoletype;
+    float drive; //parameters. Always 0-1, and we scale/alter them elsewhere.
+	float output;
+};
+
+#endif
diff --git a/plugins/LinuxVST/src/Channel5/Channel5Proc.cpp b/plugins/LinuxVST/src/Channel5/Channel5Proc.cpp
new file mode 100755
index 0000000..174ee28
--- /dev/null
+++ b/plugins/LinuxVST/src/Channel5/Channel5Proc.cpp
@@ -0,0 +1,278 @@
+/* ========================================
+ *  Channel5 - Channel5.h
+ *  Copyright (c) 2016 airwindows, All rights reserved
+ * ======================================== */
+
+#ifndef __Channel5_H
+#include "Channel5.h"
+#endif
+
+void Channel5::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 = 1.0;
+	overallscale /= 44100.0;
+	overallscale *= getSampleRate();	
+	const double localiirAmount = iirAmount / overallscale;
+	const double localthreshold = threshold / overallscale;
+	const double density = pow(drive,2); //this doesn't relate to the plugins Density and Drive much
+
+    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
+		
+		if (fpFlip)
+		{
+			iirSampleLA = (iirSampleLA * (1 - localiirAmount)) + (inputSampleL * localiirAmount);
+			inputSampleL = inputSampleL - iirSampleLA;
+			iirSampleRA = (iirSampleRA * (1 - localiirAmount)) + (inputSampleR * localiirAmount);
+			inputSampleR = inputSampleR - iirSampleRA;
+		}
+		else
+		{
+			iirSampleLB = (iirSampleLB * (1 - localiirAmount)) + (inputSampleL * localiirAmount);
+			inputSampleL = inputSampleL - iirSampleLB;
+			iirSampleRB = (iirSampleRB * (1 - localiirAmount)) + (inputSampleR * localiirAmount);
+			inputSampleR = inputSampleR - iirSampleRB;
+		}
+		//highpass section
+		
+		long double bridgerectifier = fabs(inputSampleL)*1.57079633;
+		if (bridgerectifier > 1.57079633) bridgerectifier = 1.0;
+		else bridgerectifier = sin(bridgerectifier);
+		if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-density))+(bridgerectifier*density);
+		else inputSampleL = (inputSampleL*(1-density))-(bridgerectifier*density);
+		
+		bridgerectifier = fabs(inputSampleR)*1.57079633;
+		if (bridgerectifier > 1.57079633) bridgerectifier = 1.0;
+		else bridgerectifier = sin(bridgerectifier);
+		if (inputSampleR > 0) inputSampleR = (inputSampleR*(1-density))+(bridgerectifier*density);
+		else inputSampleR = (inputSampleR*(1-density))-(bridgerectifier*density);
+		//drive section
+		
+		double clamp = inputSampleL - lastSampleL;
+		if (clamp > localthreshold)
+			inputSampleL = lastSampleL + localthreshold;
+		if (-clamp > localthreshold)
+			inputSampleL = lastSampleL - localthreshold;
+		lastSampleL = inputSampleL;
+		
+		clamp = inputSampleR - lastSampleR;
+		if (clamp > localthreshold)
+			inputSampleR = lastSampleR + localthreshold;
+		if (-clamp > localthreshold)
+			inputSampleR = lastSampleR - localthreshold;
+		lastSampleR = inputSampleR;
+		//slew section
+		fpFlip = !fpFlip;
+		
+		if (output < 1.0) {
+			inputSampleL *= output;
+			inputSampleR *= output;
+		}
+		
+		//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 Channel5::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 = 1.0;
+	overallscale /= 44100.0;
+	overallscale *= getSampleRate();	
+	const double localiirAmount = iirAmount / overallscale;
+	const double localthreshold = threshold / overallscale;
+	const double density = pow(drive,2); //this doesn't relate to the plugins Density and Drive much
+	
+    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
+		
+		if (fpFlip)
+		{
+			iirSampleLA = (iirSampleLA * (1 - localiirAmount)) + (inputSampleL * localiirAmount);
+			inputSampleL = inputSampleL - iirSampleLA;
+			iirSampleRA = (iirSampleRA * (1 - localiirAmount)) + (inputSampleR * localiirAmount);
+			inputSampleR = inputSampleR - iirSampleRA;
+		}
+		else
+		{
+			iirSampleLB = (iirSampleLB * (1 - localiirAmount)) + (inputSampleL * localiirAmount);
+			inputSampleL = inputSampleL - iirSampleLB;
+			iirSampleRB = (iirSampleRB * (1 - localiirAmount)) + (inputSampleR * localiirAmount);
+			inputSampleR = inputSampleR - iirSampleRB;
+		}
+		//highpass section
+		
+		long double bridgerectifier = fabs(inputSampleL)*1.57079633;
+		if (bridgerectifier > 1.57079633) bridgerectifier = 1.0;
+		else bridgerectifier = sin(bridgerectifier);
+		if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-density))+(bridgerectifier*density);
+		else inputSampleL = (inputSampleL*(1-density))-(bridgerectifier*density);
+		
+		bridgerectifier = fabs(inputSampleR)*1.57079633;
+		if (bridgerectifier > 1.57079633) bridgerectifier = 1.0;
+		else bridgerectifier = sin(bridgerectifier);
+		if (inputSampleR > 0) inputSampleR = (inputSampleR*(1-density))+(bridgerectifier*density);
+		else inputSampleR = (inputSampleR*(1-density))-(bridgerectifier*density);
+		//drive section
+		
+		double clamp = inputSampleL - lastSampleL;
+		if (clamp > localthreshold)
+			inputSampleL = lastSampleL + localthreshold;
+		if (-clamp > localthreshold)
+			inputSampleL = lastSampleL - localthreshold;
+		lastSampleL = inputSampleL;
+		
+		clamp = inputSampleR - lastSampleR;
+		if (clamp > localthreshold)
+			inputSampleR = lastSampleR + localthreshold;
+		if (-clamp > localthreshold)
+			inputSampleR = lastSampleR - localthreshold;
+		lastSampleR = inputSampleR;
+		//slew section
+		fpFlip = !fpFlip;
+		
+		if (output < 1.0) {
+			inputSampleL *= output;
+			inputSampleR *= output;
+		}		
+		
+		//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.	
+}