Ditherbox… and individual dithers

3 files changed, 384 insertions, 0 deletions

diff --git a/plugins/MacVST/DoublePaul/source/DoublePaul.cpp b/plugins/MacVST/DoublePaul/source/DoublePaul.cpp
new file mode 100755
index 0000000..a5d374d
--- /dev/null
+++ b/plugins/MacVST/DoublePaul/source/DoublePaul.cpp
@@ -0,0 +1,79 @@
+/* ========================================
+ *  DoublePaul - DoublePaul.h
+ *  Copyright (c) 2016 airwindows, All rights reserved
+ * ======================================== */
+
+#ifndef __DoublePaul_H
+#include "DoublePaul.h"
+#endif
+
+AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new DoublePaul(audioMaster);}
+
+DoublePaul::DoublePaul(audioMasterCallback audioMaster) :
+    AudioEffectX(audioMaster, kNumPrograms, kNumParameters)
+{
+	for(int count = 0; count < 11; count++) {bL[count] = 0.0;bR[count] = 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
+}
+
+DoublePaul::~DoublePaul() {}
+VstInt32 DoublePaul::getVendorVersion () {return 1000;}
+void DoublePaul::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);}
+void DoublePaul::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 DoublePaul::getChunk (void** data, bool isPreset)
+{
+	return kNumParameters * sizeof(float);
+}
+
+VstInt32 DoublePaul::setChunk (void* data, VstInt32 byteSize, bool isPreset)
+{	
+	return 0;
+}
+
+void DoublePaul::setParameter(VstInt32 index, float value) {
+}
+
+float DoublePaul::getParameter(VstInt32 index) {
+	return 0.0; //we only need to update the relevant name, this is simple to manage
+}
+
+void DoublePaul::getParameterName(VstInt32 index, char *text) {
+}
+
+void DoublePaul::getParameterDisplay(VstInt32 index, char *text) {
+}
+
+void DoublePaul::getParameterLabel(VstInt32 index, char *text) {
+}
+
+VstInt32 DoublePaul::canDo(char *text) 
+{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know
+
+bool DoublePaul::getEffectName(char* name) {
+    vst_strncpy(name, "DoublePaul", kVstMaxProductStrLen); return true;
+}
+
+VstPlugCategory DoublePaul::getPlugCategory() {return kPlugCategEffect;}
+
+bool DoublePaul::getProductString(char* text) {
+  	vst_strncpy (text, "airwindows DoublePaul", kVstMaxProductStrLen); return true;
+}
+
+bool DoublePaul::getVendorString(char* text) {
+  	vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true;
+}
diff --git a/plugins/MacVST/DoublePaul/source/DoublePaul.h b/plugins/MacVST/DoublePaul/source/DoublePaul.h
new file mode 100755
index 0000000..4cb0b88
--- /dev/null
+++ b/plugins/MacVST/DoublePaul/source/DoublePaul.h
@@ -0,0 +1,59 @@
+/* ========================================
+ *  DoublePaul - DoublePaul.h
+ *  Created 8/12/11 by SPIAdmin 
+ *  Copyright (c) 2011 __MyCompanyName__, All rights reserved
+ * ======================================== */
+
+#ifndef __DoublePaul_H
+#define __DoublePaul_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 = 'dbpa';    //Change this to what the AU identity is!
+
+class DoublePaul : 
+    public AudioEffectX 
+{
+public:
+    DoublePaul(audioMasterCallback audioMaster);
+    ~DoublePaul();
+    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 bL[11];		
+	double bR[11];		
+
+};
+
+#endif
diff --git a/plugins/MacVST/DoublePaul/source/DoublePaulProc.cpp b/plugins/MacVST/DoublePaul/source/DoublePaulProc.cpp
new file mode 100755
index 0000000..66de94f
--- /dev/null
+++ b/plugins/MacVST/DoublePaul/source/DoublePaulProc.cpp
@@ -0,0 +1,246 @@
+/* ========================================
+ *  DoublePaul - DoublePaul.h
+ *  Copyright (c) 2016 airwindows, All rights reserved
+ * ======================================== */
+
+#ifndef __DoublePaul_H
+#include "DoublePaul.h"
+#endif
+
+void DoublePaul::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) 
+{
+    float* in1  =  inputs[0];
+    float* in2  =  inputs[1];
+    float* out1 = outputs[0];
+    float* out2 = outputs[1];
+
+	double currentDitherL;
+	double currentDitherR;
+
+	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.
+		}
+
+		inputSampleL *= 8388608.0;
+		inputSampleR *= 8388608.0;
+		//0-1 is now one bit, now we dither
+		
+		bL[9] = bL[8]; bL[8] = bL[7]; bL[7] = bL[6]; bL[6] = bL[5];
+		bL[5] = bL[4]; bL[4] = bL[3]; bL[3] = bL[2]; bL[2] = bL[1];
+		bL[1] = bL[0]; bL[0] = (rand()/(double)RAND_MAX);
+		
+		currentDitherL  = (bL[0] * 0.061);
+		currentDitherL -= (bL[1] * 0.11);
+		currentDitherL += (bL[8] * 0.126);
+		currentDitherL -= (bL[7] * 0.23);
+		currentDitherL += (bL[2] * 0.25);
+		currentDitherL -= (bL[3] * 0.43);
+		currentDitherL += (bL[6] * 0.5);
+		currentDitherL -= bL[5];
+		currentDitherL += bL[4];
+		//this sounds different from doing it in order of sample position
+		//cumulative tiny errors seem to build up even at this buss depth
+		//considerably more pronounced at 32 bit float.
+		//Therefore we add the most significant components LAST.
+		//trying to keep values on like exponents of the floating point value.
+		inputSampleL += currentDitherL;
+		
+		inputSampleL = floor(inputSampleL);
+			//done with L
+		
+		bR[9] = bR[8]; bR[8] = bR[7]; bR[7] = bR[6]; bR[6] = bR[5];
+		bR[5] = bR[4]; bR[4] = bR[3]; bR[3] = bR[2]; bR[2] = bR[1];
+		bR[1] = bR[0]; bR[0] = (rand()/(double)RAND_MAX);
+		
+		currentDitherR  = (bR[0] * 0.061);
+		currentDitherR -= (bR[1] * 0.11);
+		currentDitherR += (bR[8] * 0.126);
+		currentDitherR -= (bR[7] * 0.23);
+		currentDitherR += (bR[2] * 0.25);
+		currentDitherR -= (bR[3] * 0.43);
+		currentDitherR += (bR[6] * 0.5);
+		currentDitherR -= bR[5];
+		currentDitherR += bR[4];
+		//this sounds different from doing it in order of sample position
+		//cumulative tiny errors seem to build up even at this buss depth
+		//considerably more pronounced at 32 bit float.
+		//Therefore we add the most significant components LAST.
+		//trying to keep values on like exponents of the floating point value.
+		inputSampleR += currentDitherR;
+		
+		inputSampleR = floor(inputSampleR);
+			//done with R
+		
+		inputSampleL /= 8388608.0;
+		inputSampleR /= 8388608.0;
+		
+		*out1 = inputSampleL;
+		*out2 = inputSampleR;
+
+		*in1++;
+		*in2++;
+		*out1++;
+		*out2++;
+    }
+}
+
+void DoublePaul::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) 
+{
+    double* in1  =  inputs[0];
+    double* in2  =  inputs[1];
+    double* out1 = outputs[0];
+    double* out2 = outputs[1];
+
+	double currentDitherL;
+	double currentDitherR;
+
+	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.
+		}
+
+		inputSampleL *= 8388608.0;
+		inputSampleR *= 8388608.0;
+		//0-1 is now one bit, now we dither
+		
+		bL[9] = bL[8]; bL[8] = bL[7]; bL[7] = bL[6]; bL[6] = bL[5];
+		bL[5] = bL[4]; bL[4] = bL[3]; bL[3] = bL[2]; bL[2] = bL[1];
+		bL[1] = bL[0]; bL[0] = (rand()/(double)RAND_MAX);
+		
+		currentDitherL  = (bL[0] * 0.061);
+		currentDitherL -= (bL[1] * 0.11);
+		currentDitherL += (bL[8] * 0.126);
+		currentDitherL -= (bL[7] * 0.23);
+		currentDitherL += (bL[2] * 0.25);
+		currentDitherL -= (bL[3] * 0.43);
+		currentDitherL += (bL[6] * 0.5);
+		currentDitherL -= bL[5];
+		currentDitherL += bL[4];
+		//this sounds different from doing it in order of sample position
+		//cumulative tiny errors seem to build up even at this buss depth
+		//considerably more pronounced at 32 bit float.
+		//Therefore we add the most significant components LAST.
+		//trying to keep values on like exponents of the floating point value.
+		inputSampleL += currentDitherL;
+		
+		inputSampleL = floor(inputSampleL);
+		//done with L
+		
+		bR[9] = bR[8]; bR[8] = bR[7]; bR[7] = bR[6]; bR[6] = bR[5];
+		bR[5] = bR[4]; bR[4] = bR[3]; bR[3] = bR[2]; bR[2] = bR[1];
+		bR[1] = bR[0]; bR[0] = (rand()/(double)RAND_MAX);
+		
+		currentDitherR  = (bR[0] * 0.061);
+		currentDitherR -= (bR[1] * 0.11);
+		currentDitherR += (bR[8] * 0.126);
+		currentDitherR -= (bR[7] * 0.23);
+		currentDitherR += (bR[2] * 0.25);
+		currentDitherR -= (bR[3] * 0.43);
+		currentDitherR += (bR[6] * 0.5);
+		currentDitherR -= bR[5];
+		currentDitherR += bR[4];
+		//this sounds different from doing it in order of sample position
+		//cumulative tiny errors seem to build up even at this buss depth
+		//considerably more pronounced at 32 bit float.
+		//Therefore we add the most significant components LAST.
+		//trying to keep values on like exponents of the floating point value.
+		inputSampleR += currentDitherR;
+		
+		inputSampleR = floor(inputSampleR);
+		//done with R
+		
+		inputSampleL /= 8388608.0;
+		inputSampleR /= 8388608.0;
+
+		*out1 = inputSampleL;
+		*out2 = inputSampleR;
+
+		*in1++;
+		*in2++;
+		*out1++;
+		*out2++;
+    }
+}
\ No newline at end of file