diff options
author | Chris Johnson <jinx6568@sover.net> | 2019-01-27 21:13:54 -0500 |
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committer | Chris Johnson <jinx6568@sover.net> | 2019-01-27 21:13:54 -0500 |
commit | 966f2d253cd2ee6ce140ad68095a20a9d2b63052 (patch) | |
tree | b0400d95bd06512531ade6ddf55190a58b6a5623 /plugins/WinVST/EdIsDim | |
parent | 0887543349dbbec0721a1fc8b1c7deba9afefa8b (diff) | |
download | airwindows-lv2-port-966f2d253cd2ee6ce140ad68095a20a9d2b63052.tar.gz airwindows-lv2-port-966f2d253cd2ee6ce140ad68095a20a9d2b63052.tar.bz2 airwindows-lv2-port-966f2d253cd2ee6ce140ad68095a20a9d2b63052.zip |
Floating Point Dither For All
Diffstat (limited to 'plugins/WinVST/EdIsDim')
-rwxr-xr-x | plugins/WinVST/EdIsDim/.vs/VSTProject/v14/.suo | bin | 22528 -> 22528 bytes | |||
-rwxr-xr-x | plugins/WinVST/EdIsDim/EdIsDim.cpp | 7 | ||||
-rwxr-xr-x | plugins/WinVST/EdIsDim/EdIsDim.h | 7 | ||||
-rwxr-xr-x | plugins/WinVST/EdIsDim/EdIsDimProc.cpp | 62 |
4 files changed, 22 insertions, 54 deletions
diff --git a/plugins/WinVST/EdIsDim/.vs/VSTProject/v14/.suo b/plugins/WinVST/EdIsDim/.vs/VSTProject/v14/.suo Binary files differindex d170019..bcd75a3 100755 --- a/plugins/WinVST/EdIsDim/.vs/VSTProject/v14/.suo +++ b/plugins/WinVST/EdIsDim/.vs/VSTProject/v14/.suo diff --git a/plugins/WinVST/EdIsDim/EdIsDim.cpp b/plugins/WinVST/EdIsDim/EdIsDim.cpp index 6af5dd4..eb6abd3 100755 --- a/plugins/WinVST/EdIsDim/EdIsDim.cpp +++ b/plugins/WinVST/EdIsDim/EdIsDim.cpp @@ -13,11 +13,8 @@ EdIsDim::EdIsDim(audioMasterCallback audioMaster) : AudioEffectX(audioMaster, kNumPrograms, kNumParameters) { A = 0.5; - 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/WinVST/EdIsDim/EdIsDim.h b/plugins/WinVST/EdIsDim/EdIsDim.h index 8c51883..4f62705 100755 --- a/plugins/WinVST/EdIsDim/EdIsDim.h +++ b/plugins/WinVST/EdIsDim/EdIsDim.h @@ -52,11 +52,8 @@ 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 float A; diff --git a/plugins/WinVST/EdIsDim/EdIsDimProc.cpp b/plugins/WinVST/EdIsDim/EdIsDimProc.cpp index 8ee927d..0d033eb 100755 --- a/plugins/WinVST/EdIsDim/EdIsDimProc.cpp +++ b/plugins/WinVST/EdIsDim/EdIsDimProc.cpp @@ -14,9 +14,6 @@ void EdIsDim::processReplacing(float **inputs, float **outputs, VstInt32 sampleF float* out1 = outputs[0]; float* out2 = outputs[1]; - float fpTemp; - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; long double inputSampleL; long double inputSampleR; @@ -75,25 +72,14 @@ void EdIsDim::processReplacing(float **inputs, float **outputs, VstInt32 sampleF mid = (inputSampleL+inputSampleR)/2.0; side = (inputSampleL-inputSampleR)/2.0; - //noise shaping to 32-bit floating point - if (fpFlip) { - fpTemp = mid; - fpNShapeLA = (fpNShapeLA*fpOld)+((mid-fpTemp)*fpNew); - mid += fpNShapeLA; - fpTemp = side; - fpNShapeRA = (fpNShapeRA*fpOld)+((side-fpTemp)*fpNew); - side += fpNShapeRA; - } - else { - fpTemp = mid; - fpNShapeLB = (fpNShapeLB*fpOld)+((mid-fpTemp)*fpNew); - mid += fpNShapeLB; - fpTemp = side; - fpNShapeRB = (fpNShapeRB*fpOld)+((side-fpTemp)*fpNew); - side += fpNShapeRB; - } - fpFlip = !fpFlip; - //end noise shaping on 32 bit output + //stereo 32 bit dither, made small and tidy. + int expon; frexpf((float)mid, &expon); + long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62); + mid += (dither-fpNShapeL); fpNShapeL = dither; + frexpf((float)side, &expon); + dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62); + side += (dither-fpNShapeR); fpNShapeR = dither; + //end 32 bit dither *out1 = mid; *out2 = side; @@ -112,9 +98,6 @@ void EdIsDim::processDoubleReplacing(double **inputs, double **outputs, VstInt32 double* out1 = outputs[0]; double* out2 = outputs[1]; - double fpTemp; //this is different from singlereplacing - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; long double inputSampleL; long double inputSampleR; @@ -174,25 +157,16 @@ void EdIsDim::processDoubleReplacing(double **inputs, double **outputs, VstInt32 mid = (inputSampleL+inputSampleR)/2.0; side = (inputSampleL-inputSampleR)/2.0; - //noise shaping to 64-bit floating point - if (fpFlip) { - fpTemp = mid; - fpNShapeLA = (fpNShapeLA*fpOld)+((mid-fpTemp)*fpNew); - mid += fpNShapeLA; - fpTemp = side; - fpNShapeRA = (fpNShapeRA*fpOld)+((side-fpTemp)*fpNew); - side += fpNShapeRA; - } - else { - fpTemp = mid; - fpNShapeLB = (fpNShapeLB*fpOld)+((mid-fpTemp)*fpNew); - mid += fpNShapeLB; - fpTemp = side; - fpNShapeRB = (fpNShapeRB*fpOld)+((side-fpTemp)*fpNew); - side += fpNShapeRB; - } - fpFlip = !fpFlip; - //end noise shaping on 64 bit output + //stereo 64 bit dither, made small and tidy. + int expon; frexp((double)mid, &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 + mid += (dither-fpNShapeL); fpNShapeL = dither; + frexp((double)side, &expon); + dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62); + dither /= 536870912.0; //needs this to scale to 64 bit zone + side += (dither-fpNShapeR); fpNShapeR = dither; + //end 64 bit dither *out1 = mid; *out2 = side; |