Golem

1 files changed, 284 insertions, 0 deletions

diff --git a/plugins/WinVST/Golem/GolemProc.cpp b/plugins/WinVST/Golem/GolemProc.cpp
new file mode 100755
index 0000000..9235869
--- /dev/null
+++ b/plugins/WinVST/Golem/GolemProc.cpp
@@ -0,0 +1,284 @@
+/* ========================================
+ *  Golem - Golem.h
+ *  Copyright (c) 2016 airwindows, All rights reserved
+ * ======================================== */
+
+#ifndef __Golem_H
+#include "Golem.h"
+#endif
+
+void Golem::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) 
+{
+    float* in1  =  inputs[0];
+    float* in2  =  inputs[1];
+    float* out1 = outputs[0];
+    float* out2 = outputs[1];
+
+	float fpTemp;
+	long double fpOld = 0.618033988749894848204586; //golden ratio!
+	long double fpNew = 1.0 - fpOld;	
+	int phase = (int)((C * 5.999)+1);
+	double balance = ((A*2.0)-1.0) / 2.0;
+	double gainL = 0.5 - balance;
+	double gainR = 0.5 + balance;
+	double range = 30.0;
+	if (phase == 3) range = 700.0;
+	if (phase == 4) range = 700.0;
+	double offset = pow((B*2.0)-1.0,5) * range;
+	if (phase > 4) offset = 0.0;
+	if (phase > 5)
+	{
+		gainL = 0.5;
+		gainR = 0.5;
+	}
+	int near = (int)floor(fabs(offset));
+	double farLevel = fabs(offset) - near;
+	int far = near + 1;
+	double nearLevel = 1.0 - farLevel;
+	
+	long double inputSampleL;
+	long double inputSampleR;
+	
+    while (--sampleFrames >= 0)
+    {
+		inputSampleL = *in1;
+		inputSampleR = *in2;
+		if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
+			static int noisesource = 0;
+			//this declares a variable before anything else is compiled. It won't keep assigning
+			//it to 0 for every sample, it's as if the declaration doesn't exist in this context,
+			//but it lets me add this denormalization fix in a single place rather than updating
+			//it in three different locations. The variable isn't thread-safe but this is only
+			//a random seed and we can share it with whatever.
+			noisesource = noisesource % 1700021; noisesource++;
+			int residue = noisesource * noisesource;
+			residue = residue % 170003; residue *= residue;
+			residue = residue % 17011; residue *= residue;
+			residue = residue % 1709; residue *= residue;
+			residue = residue % 173; residue *= residue;
+			residue = residue % 17;
+			double applyresidue = residue;
+			applyresidue *= 0.00000001;
+			applyresidue *= 0.00000001;
+			inputSampleL = applyresidue;
+		}
+		if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
+			static int noisesource = 0;
+			noisesource = noisesource % 1700021; noisesource++;
+			int residue = noisesource * noisesource;
+			residue = residue % 170003; residue *= residue;
+			residue = residue % 17011; residue *= residue;
+			residue = residue % 1709; residue *= residue;
+			residue = residue % 173; residue *= residue;
+			residue = residue % 17;
+			double applyresidue = residue;
+			applyresidue *= 0.00000001;
+			applyresidue *= 0.00000001;
+			inputSampleR = applyresidue;
+			//this denormalization routine produces a white noise at -300 dB which the noise
+			//shaping will interact with to produce a bipolar output, but the noise is actually
+			//all positive. That should stop any variables from going denormal, and the routine
+			//only kicks in if digital black is input. As a final touch, if you save to 24-bit
+			//the silence will return to being digital black again.
+		}
+		//assign working variables
+		
+		if (phase == 2) inputSampleL = -inputSampleL;
+		if (phase == 4) inputSampleL = -inputSampleL;
+		
+		inputSampleL *= gainL;
+		inputSampleR *= gainR;
+		
+		if (count < 1 || count > 2048) {count = 2048;}
+		
+		if (offset > 0)
+		{
+			p[count+2048] = p[count] = inputSampleL;
+			inputSampleL = p[count+near]*nearLevel;
+			inputSampleL += p[count+far]*farLevel;
+			
+			//consider adding third sample just to bring out superhighs subtly, like old interpolation hacks
+			//or third and fifth samples, ditto
+			
+		}
+		
+		if (offset < 0)
+		{
+			p[count+2048] = p[count] = inputSampleR;
+			inputSampleR = p[count+near]*nearLevel;
+			inputSampleR += p[count+far]*farLevel;
+		}
+		
+		count -= 1;
+		
+		inputSampleL = inputSampleL + inputSampleR;
+		inputSampleR = inputSampleL;
+		//the output is totally mono
+		
+		//noise shaping to 32-bit floating point
+		if (flip) {
+			fpTemp = inputSampleL;
+			fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew);
+			inputSampleL += fpNShapeLA;
+			fpTemp = inputSampleR;
+			fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew);
+			inputSampleR += fpNShapeRA;
+		}
+		else {
+			fpTemp = inputSampleL;
+			fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew);
+			inputSampleL += fpNShapeLB;
+			fpTemp = inputSampleR;
+			fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew);
+			inputSampleR += fpNShapeRB;
+		}
+		flip = !flip;
+		//end noise shaping on 32 bit output
+
+		*out1 = inputSampleL;
+		*out2 = inputSampleR;
+
+		*in1++;
+		*in2++;
+		*out1++;
+		*out2++;
+    }
+}
+
+void Golem::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) 
+{
+    double* in1  =  inputs[0];
+    double* in2  =  inputs[1];
+    double* out1 = outputs[0];
+    double* out2 = outputs[1];
+
+	double fpTemp;
+	long double fpOld = 0.618033988749894848204586; //golden ratio!
+	long double fpNew = 1.0 - fpOld;	
+	int phase = (int)((C * 5.999)+1);
+	double balance = ((A*2.0)-1.0) / 2.0;
+	double gainL = 0.5 - balance;
+	double gainR = 0.5 + balance;
+	double range = 30.0;
+	if (phase == 3) range = 700.0;
+	if (phase == 4) range = 700.0;
+	double offset = pow((B*2.0)-1.0,5) * range;
+	if (phase > 4) offset = 0.0;
+	if (phase > 5)
+	{
+		gainL = 0.5;
+		gainR = 0.5;
+	}
+	int near = (int)floor(fabs(offset));
+	double farLevel = fabs(offset) - near;
+	int far = near + 1;
+	double nearLevel = 1.0 - farLevel;
+	
+	long double inputSampleL;
+	long double inputSampleR;
+	
+    while (--sampleFrames >= 0)
+    {
+		inputSampleL = *in1;
+		inputSampleR = *in2;
+		if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
+			static int noisesource = 0;
+			//this declares a variable before anything else is compiled. It won't keep assigning
+			//it to 0 for every sample, it's as if the declaration doesn't exist in this context,
+			//but it lets me add this denormalization fix in a single place rather than updating
+			//it in three different locations. The variable isn't thread-safe but this is only
+			//a random seed and we can share it with whatever.
+			noisesource = noisesource % 1700021; noisesource++;
+			int residue = noisesource * noisesource;
+			residue = residue % 170003; residue *= residue;
+			residue = residue % 17011; residue *= residue;
+			residue = residue % 1709; residue *= residue;
+			residue = residue % 173; residue *= residue;
+			residue = residue % 17;
+			double applyresidue = residue;
+			applyresidue *= 0.00000001;
+			applyresidue *= 0.00000001;
+			inputSampleL = applyresidue;
+		}
+		if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
+			static int noisesource = 0;
+			noisesource = noisesource % 1700021; noisesource++;
+			int residue = noisesource * noisesource;
+			residue = residue % 170003; residue *= residue;
+			residue = residue % 17011; residue *= residue;
+			residue = residue % 1709; residue *= residue;
+			residue = residue % 173; residue *= residue;
+			residue = residue % 17;
+			double applyresidue = residue;
+			applyresidue *= 0.00000001;
+			applyresidue *= 0.00000001;
+			inputSampleR = applyresidue;
+			//this denormalization routine produces a white noise at -300 dB which the noise
+			//shaping will interact with to produce a bipolar output, but the noise is actually
+			//all positive. That should stop any variables from going denormal, and the routine
+			//only kicks in if digital black is input. As a final touch, if you save to 24-bit
+			//the silence will return to being digital black again.
+		}
+		//assign working variables
+		
+		if (phase == 2) inputSampleL = -inputSampleL;
+		if (phase == 4) inputSampleL = -inputSampleL;
+		
+		inputSampleL *= gainL;
+		inputSampleR *= gainR;
+		
+		if (count < 1 || count > 2048) {count = 2048;}
+		
+		if (offset > 0)
+		{
+			p[count+2048] = p[count] = inputSampleL;
+			inputSampleL = p[count+near]*nearLevel;
+			inputSampleL += p[count+far]*farLevel;
+			
+			//consider adding third sample just to bring out superhighs subtly, like old interpolation hacks
+			//or third and fifth samples, ditto
+			
+		}
+		
+		if (offset < 0)
+		{
+			p[count+2048] = p[count] = inputSampleR;
+			inputSampleR = p[count+near]*nearLevel;
+			inputSampleR += p[count+far]*farLevel;
+		}
+		
+		count -= 1;
+		
+		inputSampleL = inputSampleL + inputSampleR;
+		inputSampleR = inputSampleL;
+		//the output is totally mono
+		
+		//noise shaping to 64-bit floating point
+		if (flip) {
+			fpTemp = inputSampleL;
+			fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew);
+			inputSampleL += fpNShapeLA;
+			fpTemp = inputSampleR;
+			fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew);
+			inputSampleR += fpNShapeRA;
+		}
+		else {
+			fpTemp = inputSampleL;
+			fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew);
+			inputSampleL += fpNShapeLB;
+			fpTemp = inputSampleR;
+			fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew);
+			inputSampleR += fpNShapeRB;
+		}
+		flip = !flip;
+		//end noise shaping on 64 bit output
+		
+		*out1 = inputSampleL;
+		*out2 = inputSampleR;
+
+		*in1++;
+		*in2++;
+		*out1++;
+		*out2++;
+    }
+}
\ No newline at end of file