Ditherbox… and individual dithers

3 files changed, 515 insertions, 0 deletions

diff --git a/plugins/MacVST/BuildATPDF/source/BuildATPDF.cpp b/plugins/MacVST/BuildATPDF/source/BuildATPDF.cpp
new file mode 100755
index 0000000..e9f01a8
--- /dev/null
+++ b/plugins/MacVST/BuildATPDF/source/BuildATPDF.cpp
@@ -0,0 +1,190 @@
+/* ========================================
+ *  BuildATPDF - BuildATPDF.h
+ *  Copyright (c) 2016 airwindows, All rights reserved
+ * ======================================== */
+
+#ifndef __BuildATPDF_H
+#include "BuildATPDF.h"
+#endif
+
+AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new BuildATPDF(audioMaster);}
+
+BuildATPDF::BuildATPDF(audioMasterCallback audioMaster) :
+    AudioEffectX(audioMaster, kNumPrograms, kNumParameters)
+{
+	A = 0.5;
+	B = 0.5;
+	C = 0.5;
+	D = 0.5;
+	E = 0.5;
+	F = 0.5;
+	G = 0.5;
+	H = 0.5;
+	I = 0.5;
+	J = 0.5;
+	//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
+}
+
+BuildATPDF::~BuildATPDF() {}
+VstInt32 BuildATPDF::getVendorVersion () {return 1000;}
+void BuildATPDF::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);}
+void BuildATPDF::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 BuildATPDF::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;
+	chunkData[5] = F;
+	chunkData[6] = G;
+	chunkData[7] = H;
+	chunkData[8] = I;
+	chunkData[9] = J;
+	/* 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 BuildATPDF::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]);
+	F = pinParameter(chunkData[5]);
+	G = pinParameter(chunkData[6]);
+	H = pinParameter(chunkData[7]);
+	I = pinParameter(chunkData[8]);
+	J = pinParameter(chunkData[9]);
+	/* 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 BuildATPDF::setParameter(VstInt32 index, float value) {
+    switch (index) {
+        case kParamA: A = value; break;
+        case kParamB: B = value; break; //percent. Using this value, it'll be 0-100 everywhere
+        case kParamC: C = value; break;
+        case kParamD: D = value; break;
+        case kParamE: E = value; break;
+        case kParamF: F = value; break;
+        case kParamG: G = value; break;
+        case kParamH: H = value; break;
+        case kParamI: I = value; break;
+        case kParamJ: J = value; break;
+        default: throw; // unknown parameter, shouldn't happen!
+    }
+}
+
+float BuildATPDF::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;
+        case kParamF: return F; break;
+        case kParamG: return G; break;
+        case kParamH: return H; break;
+        case kParamI: return I; break;
+        case kParamJ: return J; 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 BuildATPDF::getParameterName(VstInt32 index, char *text) {
+    switch (index) {
+        case kParamA: vst_strncpy (text, "First", kVstMaxParamStrLen); break;
+		case kParamB: vst_strncpy (text, "Second", kVstMaxParamStrLen); break;
+		case kParamC: vst_strncpy (text, "Third", kVstMaxParamStrLen); break;
+		case kParamD: vst_strncpy (text, "Fourth", kVstMaxParamStrLen); break;
+		case kParamE: vst_strncpy (text, "Fifth", kVstMaxParamStrLen); break;
+		case kParamF: vst_strncpy (text, "Sixth", kVstMaxParamStrLen); break;
+		case kParamG: vst_strncpy (text, "Seventh", kVstMaxParamStrLen); break;
+		case kParamH: vst_strncpy (text, "Eighth", kVstMaxParamStrLen); break;
+		case kParamI: vst_strncpy (text, "Ninth", kVstMaxParamStrLen); break;
+		case kParamJ: vst_strncpy (text, "Tenth", kVstMaxParamStrLen); break;
+        default: break; // unknown parameter, shouldn't happen!
+    } //this is our labels for displaying in the VST host
+}
+
+void BuildATPDF::getParameterDisplay(VstInt32 index, char *text) {
+    switch (index) {
+        case kParamA: float2string ((A*2)-1, text, kVstMaxParamStrLen); break;
+        case kParamB: float2string ((B*2)-1, text, kVstMaxParamStrLen); break;
+        case kParamC: float2string ((C*2)-1, text, kVstMaxParamStrLen); break;
+        case kParamD: float2string ((D*2)-1, text, kVstMaxParamStrLen); break;
+        case kParamE: float2string ((E*2)-1, text, kVstMaxParamStrLen); break;
+        case kParamF: float2string ((F*2)-1, text, kVstMaxParamStrLen); break;
+        case kParamG: float2string ((G*2)-1, text, kVstMaxParamStrLen); break;
+        case kParamH: float2string ((H*2)-1, text, kVstMaxParamStrLen); break;
+        case kParamI: float2string ((I*2)-1, text, kVstMaxParamStrLen); break;
+        case kParamJ: float2string ((J*2)-1, text, kVstMaxParamStrLen); break;
+		
+        default: break; // unknown parameter, shouldn't happen!
+	} //this displays the values and handles 'popups' where it's discrete choices
+}
+
+void BuildATPDF::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;
+        case kParamE: vst_strncpy (text, " ", kVstMaxParamStrLen); break;
+        case kParamF: vst_strncpy (text, " ", kVstMaxParamStrLen); break;
+        case kParamG: vst_strncpy (text, " ", kVstMaxParamStrLen); break;
+        case kParamH: vst_strncpy (text, " ", kVstMaxParamStrLen); break;
+        case kParamI: vst_strncpy (text, " ", kVstMaxParamStrLen); break;
+        case kParamJ: vst_strncpy (text, " ", kVstMaxParamStrLen); break;
+        default: break; // unknown parameter, shouldn't happen!
+    }
+}
+
+VstInt32 BuildATPDF::canDo(char *text) 
+{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know
+
+bool BuildATPDF::getEffectName(char* name) {
+    vst_strncpy(name, "BuildATPDF", kVstMaxProductStrLen); return true;
+}
+
+VstPlugCategory BuildATPDF::getPlugCategory() {return kPlugCategEffect;}
+
+bool BuildATPDF::getProductString(char* text) {
+  	vst_strncpy (text, "airwindows BuildATPDF", kVstMaxProductStrLen); return true;
+}
+
+bool BuildATPDF::getVendorString(char* text) {
+  	vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true;
+}
diff --git a/plugins/MacVST/BuildATPDF/source/BuildATPDF.h b/plugins/MacVST/BuildATPDF/source/BuildATPDF.h
new file mode 100755
index 0000000..4de6dc8
--- /dev/null
+++ b/plugins/MacVST/BuildATPDF/source/BuildATPDF.h
@@ -0,0 +1,83 @@
+/* ========================================
+ *  BuildATPDF - BuildATPDF.h
+ *  Created 8/12/11 by SPIAdmin 
+ *  Copyright (c) 2011 __MyCompanyName__, All rights reserved
+ * ======================================== */
+
+#ifndef __BuildATPDF_H
+#define __BuildATPDF_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,
+	kParamF = 5,
+	kParamG = 6,
+	kParamH = 7,
+	kParamI = 8,
+	kParamJ = 9,
+  kNumParameters = 10
+}; //
+
+const int kNumPrograms = 0;
+const int kNumInputs = 2;
+const int kNumOutputs = 2;
+const unsigned long kUniqueId = 'bltp';    //Change this to what the AU identity is!
+
+class BuildATPDF : 
+    public AudioEffectX 
+{
+public:
+    BuildATPDF(audioMasterCallback audioMaster);
+    ~BuildATPDF();
+    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];
+	double f[11];		
+	//default stuff
+
+    float A;
+    float B;
+    float C;
+    float D;
+    float E;
+    float F;
+    float G;
+    float H;
+    float I;
+    float J;
+	//parameters. Always 0-1, and we scale/alter them elsewhere.
+
+};
+
+#endif
diff --git a/plugins/MacVST/BuildATPDF/source/BuildATPDFProc.cpp b/plugins/MacVST/BuildATPDF/source/BuildATPDFProc.cpp
new file mode 100755
index 0000000..dfea125
--- /dev/null
+++ b/plugins/MacVST/BuildATPDF/source/BuildATPDFProc.cpp
@@ -0,0 +1,242 @@
+/* ========================================
+ *  BuildATPDF - BuildATPDF.h
+ *  Copyright (c) 2016 airwindows, All rights reserved
+ * ======================================== */
+
+#ifndef __BuildATPDF_H
+#include "BuildATPDF.h"
+#endif
+
+void BuildATPDF::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) 
+{
+    float* in1  =  inputs[0];
+    float* in2  =  inputs[1];
+    float* out1 = outputs[0];
+    float* out2 = outputs[1];
+
+	f[0] = (A*2)-1;
+	f[1] = (B*2)-1;
+	f[2] = (C*2)-1;
+	f[3] = (D*2)-1;
+	f[4] = (E*2)-1;
+	f[5] = (F*2)-1;
+	f[6] = (G*2)-1;
+	f[7] = (H*2)-1;
+	f[8] = (I*2)-1;
+	f[9] = (J*2)-1;
+	double currentDither;
+	double inputSampleL;
+	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);
+		
+		currentDither  = (bL[0] * f[0]);
+		currentDither += (bL[1] * f[1]);
+		currentDither += (bL[2] * f[2]);
+		currentDither += (bL[3] * f[3]);
+		currentDither += (bL[4] * f[4]);
+		currentDither += (bL[5] * f[5]);
+		currentDither += (bL[6] * f[6]);
+		currentDither += (bL[7] * f[7]);
+		currentDither += (bL[8] * f[8]);
+		currentDither += (bL[9] * f[9]);
+		inputSampleL += currentDither;
+
+		
+		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);
+		
+		currentDither  = (bR[0] * f[0]);
+		currentDither += (bR[1] * f[1]);
+		currentDither += (bR[2] * f[2]);
+		currentDither += (bR[3] * f[3]);
+		currentDither += (bR[4] * f[4]);
+		currentDither += (bR[5] * f[5]);
+		currentDither += (bR[6] * f[6]);
+		currentDither += (bR[7] * f[7]);
+		currentDither += (bR[8] * f[8]);
+		currentDither += (bR[9] * f[9]);
+		inputSampleR += currentDither;
+		
+		inputSampleL = floor(inputSampleL);
+		inputSampleR = floor(inputSampleR);
+		
+		inputSampleL /= 8388608.0;
+		inputSampleR /= 8388608.0;
+		
+		*out1 = inputSampleL;
+		*out2 = inputSampleR;
+
+		*in1++;
+		*in2++;
+		*out1++;
+		*out2++;
+    }
+}
+
+void BuildATPDF::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) 
+{
+    double* in1  =  inputs[0];
+    double* in2  =  inputs[1];
+    double* out1 = outputs[0];
+    double* out2 = outputs[1];
+
+	f[0] = (A*2)-1;
+	f[1] = (B*2)-1;
+	f[2] = (C*2)-1;
+	f[3] = (D*2)-1;
+	f[4] = (E*2)-1;
+	f[5] = (F*2)-1;
+	f[6] = (G*2)-1;
+	f[7] = (H*2)-1;
+	f[8] = (I*2)-1;
+	f[9] = (J*2)-1;
+	double currentDither;
+	double inputSampleL;
+	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);
+		
+		currentDither  = (bL[0] * f[0]);
+		currentDither += (bL[1] * f[1]);
+		currentDither += (bL[2] * f[2]);
+		currentDither += (bL[3] * f[3]);
+		currentDither += (bL[4] * f[4]);
+		currentDither += (bL[5] * f[5]);
+		currentDither += (bL[6] * f[6]);
+		currentDither += (bL[7] * f[7]);
+		currentDither += (bL[8] * f[8]);
+		currentDither += (bL[9] * f[9]);
+		inputSampleL += currentDither;
+		
+		
+		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);
+		
+		currentDither  = (bR[0] * f[0]);
+		currentDither += (bR[1] * f[1]);
+		currentDither += (bR[2] * f[2]);
+		currentDither += (bR[3] * f[3]);
+		currentDither += (bR[4] * f[4]);
+		currentDither += (bR[5] * f[5]);
+		currentDither += (bR[6] * f[6]);
+		currentDither += (bR[7] * f[7]);
+		currentDither += (bR[8] * f[8]);
+		currentDither += (bR[9] * f[9]);
+		inputSampleR += currentDither;
+		
+		inputSampleL = floor(inputSampleL);
+		inputSampleR = floor(inputSampleR);
+		
+		inputSampleL /= 8388608.0;
+		inputSampleR /= 8388608.0;
+		
+		*out1 = inputSampleL;
+		*out2 = inputSampleR;
+		
+		*in1++;
+		*in2++;
+		*out1++;
+		*out2++;
+    }
+}
\ No newline at end of file