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Diffstat (limited to 'src/mdaDeEss.cpp')
| -rw-r--r-- | src/mdaDeEss.cpp | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/src/mdaDeEss.cpp b/src/mdaDeEss.cpp new file mode 100644 index 0000000..1c66c2a --- /dev/null +++ b/src/mdaDeEss.cpp @@ -0,0 +1,208 @@ +/* + Copyright 2008-2011 David Robillard <http://drobilla.net> + Copyright 1999-2000 Paul Kellett (Maxim Digital Audio) + + This is free software: you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, + or (at your option) any later version. + + This software is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + See the GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this software. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "mdaDeEss.h" + +#include <math.h> +#include <float.h> + +AudioEffect *createEffectInstance(audioMasterCallback audioMaster) +{ + return new mdaDeEss(audioMaster); +} + +mdaDeEss::mdaDeEss(audioMasterCallback audioMaster) : AudioEffectX(audioMaster, 1, 3) // programs, parameters +{ + //inits here! + fParam1 = (float)0.15f; //thresh + fParam2 = (float)0.60f; //f + fParam3 = (float)0.50f; //drive + fbuf1 = 0.0f; + fbuf2 = 0.0f; + gai = 0.0f; + thr = 0.0f; + att = 0.0f; + rel = 0.0f; + fil = 0.0f; + setNumInputs(2); + setNumOutputs(2); + setUniqueID("mdaDeEss"); //identify here + DECLARE_LVZ_DEPRECATED(canMono) (); + canProcessReplacing(); + strcpy(programName, "De-esser"); + + env=0.f; + setParameter(0, 0.5f); +} + +bool mdaDeEss::getProductString(char* text) { strcpy(text, "MDA De-ess"); return true; } +bool mdaDeEss::getVendorString(char* text) { strcpy(text, "mda"); return true; } +bool mdaDeEss::getEffectName(char* name) { strcpy(name, "De-ess"); return true; } + +void mdaDeEss::setParameter(int32_t index, float value) +{ + switch(index) + { + case 0: fParam1 = value; break; + case 1: fParam2 = value; break; + case 2: fParam3 = value; break; + } + //calcs here + thr=(float)pow(10.0f, 3.f * fParam1 - 3.f); + att=0.01f; + rel=0.992f; + fil=0.05f + 0.94f * fParam2 * fParam2; + gai=(float)pow(10.0f, 2.f * fParam3 - 1.f); +} + +mdaDeEss::~mdaDeEss() +{ +} + +void mdaDeEss::setProgramName(char *name) +{ + strcpy(programName, name); +} + +void mdaDeEss::getProgramName(char *name) +{ + strcpy(name, programName); +} + +float mdaDeEss::getParameter(int32_t index) +{ + float v=0; + + switch(index) + { + case 0: v = fParam1; break; + case 1: v = fParam2; break; + case 2: v = fParam3; break; + } + return v; +} + +void mdaDeEss::getParameterName(int32_t index, char *label) +{ + switch(index) + { + case 0: strcpy(label, "Thresh"); break; + case 1: strcpy(label, "Freq"); break; + case 2: strcpy(label, "HF Drive"); break; + } +} + +#include <stdio.h> +static void long2string(long value, char *string) { sprintf(string, "%ld", value); } + +void mdaDeEss::getParameterDisplay(int32_t index, char *text) +{ + switch(index) + { + case 0: long2string((long)(60.f * fParam1 - 60.f), text); break; + case 1: long2string((long)(1000 + 11000 * fParam2), text); break; + case 2: long2string((long)(40.0 * fParam3 - 20.0), text); break; + } +} + +void mdaDeEss::getParameterLabel(int32_t index, char *label) +{ + switch(index) + { + case 0: strcpy(label, "dB"); break; + case 1: strcpy(label, "Hz"); break; + case 2: strcpy(label, "dB"); break; + } +} + +//-------------------------------------------------------------------------------- +// process + +void mdaDeEss::process(float **inputs, float **outputs, int32_t sampleFrames) +{ + float *in1 = inputs[0]; + float *in2 = inputs[1]; + float *out1 = outputs[0]; + float *out2 = outputs[1]; + float a, b, c, d; + float f1=fbuf1, f2=fbuf2, tmp, fi=fil, fo=(1.f-fil); + float at=att, re=rel, en=env, th=thr, g, gg=gai; + + --in1; + --in2; + --out1; + --out2; + while(--sampleFrames >= 0) + { + a = *++in1; + b = *++in2; + c = out1[1]; + d = out2[1]; + + tmp = 0.5f * (a + b); //2nd order crossover + f1 = fo * f1 + fi * tmp; + tmp -= f1; + f2 = fo * f2 + fi * tmp; + tmp = gg*(tmp - f2); //extra HF gain + + en=(tmp>en)? en+at*(tmp-en) : en*re; //envelope + if(en>th) g=f1+f2+tmp*(th/en); else g=f1+f2+tmp; //limit + + c += g; + d += g; + *++out1 = c; + *++out2 = d; + } + if(fabs(f1)<1.0e-10) {fbuf1=0.f; fbuf2=0.f;} else {fbuf1=f1; fbuf2=f2;} + if(fabs(en)<1.0e-10) env=0.f; else env=en; +} + +void mdaDeEss::processReplacing(float **inputs, float **outputs, int32_t sampleFrames) +{ + float *in1 = inputs[0]; + float *in2 = inputs[1]; + float *out1 = outputs[0]; + float *out2 = outputs[1]; + float a, b; + float f1=fbuf1, f2=fbuf2, tmp, fi=fil, fo=(1.f-fil); + float at=att, re=rel, en=env, th=thr, g, gg=gai; + + --in1; + --in2; + --out1; + --out2; + while(--sampleFrames >= 0) + { + a = *++in1; + b = *++in2; + + tmp = 0.5f * (a + b); //2nd order crossover + f1 = fo * f1 + fi * tmp; + tmp -= f1; + f2 = fo * f2 + fi * tmp; + tmp = gg*(tmp - f2); //extra HF gain + + en=(tmp>en)? en+at*(tmp-en) : en*re; //envelope + if(en>th) g=f1+f2+tmp*(th/en); else g=f1+f2+tmp; //limit + //brackets for full-band!!! + *++out1 = g; + *++out2 = g; + } + if(fabs(f1)<1.0e-10) {fbuf1=0.f; fbuf2=0.f;} else {fbuf1=f1; fbuf2=f2;} + if(fabs(en)<1.0e-10) env=0.f; else env=en; +} |