Floating Point Dither For All

5 files changed, 45 insertions, 77 deletions

diff --git a/plugins/MacVST/PDBuss/PDBuss.xcodeproj/christopherjohnson.pbxuser b/plugins/MacVST/PDBuss/PDBuss.xcodeproj/christopherjohnson.pbxuser
index 1d8c78b..37b5241 100755
--- a/plugins/MacVST/PDBuss/PDBuss.xcodeproj/christopherjohnson.pbxuser
+++ b/plugins/MacVST/PDBuss/PDBuss.xcodeproj/christopherjohnson.pbxuser
@@ -49,12 +49,12 @@
 					PBXFileDataSource_Warnings_ColumnID,
 				);
 			};
-			PBXPerProjectTemplateStateSaveDate = 538696868;
-			PBXWorkspaceStateSaveDate = 538696868;
+			PBXPerProjectTemplateStateSaveDate = 569770752;
+			PBXWorkspaceStateSaveDate = 569770752;
 		};
 		perUserProjectItems = {
-			8B4E5710201BE13900B5DC2A /* PBXTextBookmark */ = 8B4E5710201BE13900B5DC2A /* PBXTextBookmark */;
 			8B4E574B201BE1E100B5DC2A /* PBXTextBookmark */ = 8B4E574B201BE1E100B5DC2A /* PBXTextBookmark */;
+			8B793D7821F60308006E9731 /* PBXTextBookmark */ = 8B793D7821F60308006E9731 /* PBXTextBookmark */;
 		};
 		sourceControlManager = 8B02375E1D42B1C400E1E8C8 /* Source Control */;
 		userBuildSettings = {
@@ -62,9 +62,9 @@
 	};
 	2407DEB6089929BA00EB68BF /* PDBuss.cpp */ = {
 		uiCtxt = {
-			sepNavIntBoundsRect = "{{0, 0}, {554, 1742}}";
+			sepNavIntBoundsRect = "{{0, 0}, {554, 1820}}";
 			sepNavSelRange = "{2794, 0}";
-			sepNavVisRange = "{2616, 272}";
+			sepNavVisRange = "{2688, 198}";
 			sepNavWindowFrame = "{{337, 47}, {895, 831}}";
 		};
 	};
@@ -106,7 +106,7 @@
 		isa = PBXCodeSenseManager;
 		indexTemplatePath = "";
 	};
-	8B4E5710201BE13900B5DC2A /* PBXTextBookmark */ = {
+	8B4E574B201BE1E100B5DC2A /* PBXTextBookmark */ = {
 		isa = PBXTextBookmark;
 		fRef = 2407DEB6089929BA00EB68BF /* PDBuss.cpp */;
 		name = "PDBuss.cpp: 85";
@@ -116,15 +116,15 @@
 		vrLen = 272;
 		vrLoc = 2616;
 	};
-	8B4E574B201BE1E100B5DC2A /* PBXTextBookmark */ = {
+	8B793D7821F60308006E9731 /* PBXTextBookmark */ = {
 		isa = PBXTextBookmark;
 		fRef = 2407DEB6089929BA00EB68BF /* PDBuss.cpp */;
-		name = "PDBuss.cpp: 85";
+		name = "PDBuss.cpp: 83";
 		rLen = 0;
 		rLoc = 2794;
 		rType = 0;
-		vrLen = 272;
-		vrLoc = 2616;
+		vrLen = 198;
+		vrLoc = 2688;
 	};
 	8D01CCC60486CAD60068D4B7 /* PDBuss */ = {
 		activeExec = 0;
diff --git a/plugins/MacVST/PDBuss/PDBuss.xcodeproj/christopherjohnson.perspectivev3 b/plugins/MacVST/PDBuss/PDBuss.xcodeproj/christopherjohnson.perspectivev3
index 419ed77..2dcefe9 100755
--- a/plugins/MacVST/PDBuss/PDBuss.xcodeproj/christopherjohnson.perspectivev3
+++ b/plugins/MacVST/PDBuss/PDBuss.xcodeproj/christopherjohnson.perspectivev3
@@ -351,10 +351,10 @@
 										<key>_historyCapacity</key>
 										<integer>0</integer>
 										<key>bookmark</key>
-										<string>8B4E574B201BE1E100B5DC2A</string>
+										<string>8B793D7821F60308006E9731</string>
 										<key>history</key>
 										<array>
-											<string>8B4E5710201BE13900B5DC2A</string>
+											<string>8B4E574B201BE1E100B5DC2A</string>
 										</array>
 									</dict>
 									<key>SplitCount</key>
@@ -368,18 +368,18 @@
 							<key>GeometryConfiguration</key>
 							<dict>
 								<key>Frame</key>
-								<string>{{0, 0}, {603, 132}}</string>
+								<string>{{0, 0}, {603, 117}}</string>
 								<key>RubberWindowFrame</key>
 								<string>27 370 810 487 0 0 1440 878 </string>
 							</dict>
 							<key>Module</key>
 							<string>PBXNavigatorGroup</string>
 							<key>Proportion</key>
-							<string>132pt</string>
+							<string>117pt</string>
 						</dict>
 						<dict>
 							<key>Proportion</key>
-							<string>309pt</string>
+							<string>324pt</string>
 							<key>Tabs</key>
 							<array>
 								<dict>
@@ -393,7 +393,9 @@
 									<key>GeometryConfiguration</key>
 									<dict>
 										<key>Frame</key>
-										<string>{{10, 27}, {603, 282}}</string>
+										<string>{{10, 27}, {603, 297}}</string>
+										<key>RubberWindowFrame</key>
+										<string>27 370 810 487 0 0 1440 878 </string>
 									</dict>
 									<key>Module</key>
 									<string>XCDetailModule</string>
@@ -448,8 +450,6 @@
 									<dict>
 										<key>Frame</key>
 										<string>{{10, 27}, {603, 282}}</string>
-										<key>RubberWindowFrame</key>
-										<string>27 370 810 487 0 0 1440 878 </string>
 									</dict>
 									<key>Module</key>
 									<string>PBXBuildResultsModule</string>
@@ -477,11 +477,11 @@
 			</array>
 			<key>TableOfContents</key>
 			<array>
-				<string>8B4E574C201BE1E100B5DC2A</string>
+				<string>8B793D7921F60308006E9731</string>
 				<string>1CA23ED40692098700951B8B</string>
-				<string>8B4E574D201BE1E100B5DC2A</string>
+				<string>8B793D7A21F60308006E9731</string>
 				<string>8B0237581D42B1C400E1E8C8</string>
-				<string>8B4E574E201BE1E100B5DC2A</string>
+				<string>8B793D7B21F60308006E9731</string>
 				<string>1CA23EDF0692099D00951B8B</string>
 				<string>1CA23EE00692099D00951B8B</string>
 				<string>1CA23EE10692099D00951B8B</string>
@@ -634,7 +634,7 @@
 	<key>StatusbarIsVisible</key>
 	<true/>
 	<key>TimeStamp</key>
-	<real>538698209.87022996</real>
+	<real>569770760.80971301</real>
 	<key>ToolbarConfigUserDefaultsMinorVersion</key>
 	<string>2</string>
 	<key>ToolbarDisplayMode</key>
@@ -651,7 +651,7 @@
 	<integer>5</integer>
 	<key>WindowOrderList</key>
 	<array>
-		<string>/Users/christopherjohnson/Desktop/PDBuss/PDBuss.xcodeproj</string>
+		<string>/Users/christopherjohnson/Desktop/MacVST/PDBuss/PDBuss.xcodeproj</string>
 	</array>
 	<key>WindowString</key>
 	<string>27 370 810 487 0 0 1440 878 </string>
diff --git a/plugins/MacVST/PDBuss/source/PDBuss.cpp b/plugins/MacVST/PDBuss/source/PDBuss.cpp
index 323d8cf..8b31d8b 100755
--- a/plugins/MacVST/PDBuss/source/PDBuss.cpp
+++ b/plugins/MacVST/PDBuss/source/PDBuss.cpp
@@ -21,11 +21,8 @@ PDBuss::PDBuss(audioMasterCallback audioMaster) :
 	previousSampleL = 0.0;
 	previousSampleR = 0.0;
 
-	fpNShapeLA = 0.0;
-	fpNShapeLB = 0.0;
-	fpNShapeRA = 0.0;
-	fpNShapeRB = 0.0;
-	fpFlip = true;
+	fpNShapeL = 0.0;
+	fpNShapeR = 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.
diff --git a/plugins/MacVST/PDBuss/source/PDBuss.h b/plugins/MacVST/PDBuss/source/PDBuss.h
index 5c7a504..3e6d9b8 100755
--- a/plugins/MacVST/PDBuss/source/PDBuss.h
+++ b/plugins/MacVST/PDBuss/source/PDBuss.h
@@ -53,11 +53,8 @@ private:
     char _programName[kVstMaxProgNameLen + 1];
     std::set< std::string > _canDo;
     
-	long double fpNShapeLA;
-	long double fpNShapeLB;
-	long double fpNShapeRA;
-	long double fpNShapeRB;
-	bool fpFlip;
+	long double fpNShapeL;
+	long double fpNShapeR;
 	//default stuff
 	double gainchase;
 	double settingchase;
diff --git a/plugins/MacVST/PDBuss/source/PDBussProc.cpp b/plugins/MacVST/PDBuss/source/PDBussProc.cpp
index c099057..6da8fa0 100755
--- a/plugins/MacVST/PDBuss/source/PDBussProc.cpp
+++ b/plugins/MacVST/PDBuss/source/PDBussProc.cpp
@@ -13,9 +13,6 @@ void PDBuss::processReplacing(float **inputs, float **outputs, VstInt32 sampleFr
     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;	
 	
 	double inputgain = A;
 	double intensity = B;
@@ -122,25 +119,14 @@ void PDBuss::processReplacing(float **inputs, float **outputs, VstInt32 sampleFr
 		previousSampleR = sin(drySampleR);
 		//apply the sine while storing previous sample
 		
-		//noise shaping to 32-bit floating point
-		if (fpFlip) {
-			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;
-		}
-		fpFlip = !fpFlip;
-		//end noise shaping on 32 bit output
+		//stereo 32 bit dither, made small and tidy.
+		int expon; frexpf((float)inputSampleL, &expon);
+		long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+		inputSampleL += (dither-fpNShapeL); fpNShapeL = dither;
+		frexpf((float)inputSampleR, &expon);
+		dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+		inputSampleR += (dither-fpNShapeR); fpNShapeR = dither;
+		//end 32 bit dither
 
 		*out1 = inputSampleL;
 		*out2 = inputSampleR;
@@ -158,9 +144,6 @@ void PDBuss::processDoubleReplacing(double **inputs, double **outputs, VstInt32
     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;	
 	
 	double inputgain = A;
 	double intensity = B;
@@ -267,25 +250,16 @@ void PDBuss::processDoubleReplacing(double **inputs, double **outputs, VstInt32
 		previousSampleR = sin(drySampleR);
 		//apply the sine while storing previous sample
 		
-		//noise shaping to 64-bit floating point
-		if (fpFlip) {
-			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;
-		}
-		fpFlip = !fpFlip;
-		//end noise shaping on 64 bit output
+		//stereo 64 bit dither, made small and tidy.
+		int expon; frexp((double)inputSampleL, &expon);
+		long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+		dither /= 536870912.0; //needs this to scale to 64 bit zone
+		inputSampleL += (dither-fpNShapeL); fpNShapeL = dither;
+		frexp((double)inputSampleR, &expon);
+		dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+		dither /= 536870912.0; //needs this to scale to 64 bit zone
+		inputSampleR += (dither-fpNShapeR); fpNShapeR = dither;
+		//end 64 bit dither
 		
 		*out1 = inputSampleL;
 		*out2 = inputSampleR;