From e360047054117d63fb579ec9231e9dc77c99f12a Mon Sep 17 00:00:00 2001 From: David Robillard Date: Fri, 8 Aug 2008 22:45:58 +0000 Subject: Add preliminary (library side only) LV2 port of MDA (open-sourced VST plugins). git-svn-id: http://svn.drobilla.net/lad/mda-lv2@1321 a436a847-0d15-0410-975c-d299462d15a1 --- src/mdaVocInput.cpp | 323 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 323 insertions(+) create mode 100644 src/mdaVocInput.cpp (limited to 'src/mdaVocInput.cpp') diff --git a/src/mdaVocInput.cpp b/src/mdaVocInput.cpp new file mode 100644 index 0000000..a595158 --- /dev/null +++ b/src/mdaVocInput.cpp @@ -0,0 +1,323 @@ +// +// Plug-in: "mda VocSource" v1.0 (generates carrier signal for vocoder) +// +// Copyright(c)1999-2000 Paul Kellett (maxim digital audio) +// + +#include "mdaVocInput.h" + +#include +#include +#include +#include + +AudioEffect *createEffectInstance(audioMasterCallback audioMaster) +{ + return new mdaVocInput(audioMaster); +} + +mdaVocInputProgram::mdaVocInputProgram() ///default program settings +{ + param[0] = 0.25f; //Tracking Off / On / Quant + param[1] = 0.50f; //Pitch + param[2] = 0.20f; //Breath Noise + param[3] = 0.50f; //Voiced/Unvoiced Thresh + param[4] = 0.35f; //Max Freq + strcpy(name, "Vocoder Carrier Signal"); +} + + +mdaVocInput::mdaVocInput(audioMasterCallback audioMaster): AudioEffectX(audioMaster, NPROGS, NPARAMS) +{ + setNumInputs(2); + setNumOutputs(2); + setUniqueID("mda3"); ///identify plug-in here + DECLARE_LVZ_DEPRECATED(canMono) (); + canProcessReplacing(); + + programs = new mdaVocInputProgram[numPrograms]; + setProgram(0); + + suspend(); +} + +bool mdaVocInput::getProductString(char* text) { strcpy(text, "mda VocInput"); return true; } +bool mdaVocInput::getVendorString(char* text) { strcpy(text, "mda"); return true; } +bool mdaVocInput::getEffectName(char* name) { strcpy(name, "VocInput"); return true; } + +void mdaVocInput::resume() ///update internal parameters... +{ + float fs, ifs; + fs = getSampleRate(); + ifs = 1.0f / fs; + + track = (long)(2.99f * param[0]); + pmult = (float)pow(1.0594631f, floor(48.0f * param[1] - 24.0f)); + if(track==0) pstep = 110.0f * pmult * ifs; + + noise = 6.0f * param[2]; + lfreq = 660.0f * ifs; + minp = (float)pow(16.0f, 0.5f - param[4]) * fs / 440.0f; + maxp = 0.03f * fs; + root = log10(8.1757989f * ifs); + vuv = param[3] * param[3]; +} + + +void mdaVocInput::suspend() ///clear any buffers... +{ + lbuf0 = lbuf1 = lbuf2 = lbuf3 = 0.0f; + pstep = sawbuf = lenv = 0.0f; +} + + +mdaVocInput::~mdaVocInput() ///destroy any buffers... +{ + if(programs) delete [] programs; +} + + +void mdaVocInput::setProgram(LvzInt32 program) +{ + int i=0; + + mdaVocInputProgram *p = &programs[program]; + curProgram = program; + setProgramName(p->name); + for(i=0; iparam[i]; + resume(); +} + + +void mdaVocInput::setParameter(LvzInt32 index, float value) { param[index] = value; resume(); } +float mdaVocInput::getParameter(LvzInt32 index) { return param[index]; } +void mdaVocInput::setProgramName(char *name) { strcpy(programName, name); } +void mdaVocInput::getProgramName(char *name) { strcpy(name, programName); } + + +void mdaVocInput::getParameterName(LvzInt32 index, char *label) +{ + switch(index) + { + case 0: strcpy(label, "Tracking"); break; + case 1: strcpy(label, "Pitch"); break; + case 2: strcpy(label, "Breath"); break; + case 3: strcpy(label, "S Thresh"); break; + default: strcpy(label, "Max Freq"); + } +} + + +void mdaVocInput::getParameterDisplay(LvzInt32 index, char *text) +{ + char string[16]; + + switch(index) + { + case 0: switch(track) { case 0: strcpy(string, "OFF"); break; + case 1: strcpy(string, "FREE"); break; + case 2: strcpy(string, "QUANT"); } break; + + case 1: if(track) sprintf(string, "%ld", (long)(48.0f * param[1] - 24.0f)); + else midi2string((long)(48.0f * param[1] + 21.0f), string); break; + + case 4: midi2string((long)(48.0f * param[4] + 45.0f), string); break; + + default: sprintf(string, "%.0f", 100.0f * param[index]); + } + string[8] = 0; + strcpy(text, (char *)string); +} + + +void mdaVocInput::getParameterLabel(LvzInt32 index, char *label) +{ + switch(index) + { + case 0: strcpy(label, ""); break; + case 1: strcpy(label, ""); break; + case 4: strcpy(label, "Hz"); break; + default: strcpy(label, "%"); + } +} + + +void mdaVocInput::midi2string(long n, char *text) //show name of MIDI note number (60=C3) +{ + char t[8]; + long o, s, p=0; + + t[p++] = ' '; + t[p++] = ' '; + t[p++] = ' '; + + o = int(n/12.f); s = n-(12*o); o -= 2; + + switch(s) + { + case 0: t[p++]='C'; break; + case 1: t[p++]='C'; t[p++]='#'; break; + case 2: t[p++]='D'; break; + case 3: t[p++]='D'; t[p++]='#'; break; + case 4: t[p++]='E'; break; + case 5: t[p++]='F'; break; + case 6: t[p++]='F'; t[p++]='#'; break; + case 7: t[p++]='G'; break; + case 8: t[p++]='G'; t[p++]='#'; break; + case 9: t[p++]='A'; break; + case 10: t[p++]='A'; t[p++]='#'; break; + default: t[p++]='B'; + } + t[p++] = ' '; + + if(o < 0) { t[p++] = '-'; o = -o; } + t[p++] = (char)(48 + (o % 10)); + + t[p] = 0; + strcpy(text, t); +} + + +void mdaVocInput::process(float **inputs, float **outputs, LvzInt32 sampleFrames) +{ + float *in1 = inputs[0]; + float *in2 = inputs[1]; + float *out1 = outputs[0]; + float *out2 = outputs[1]; + float a, b, c, d; + float ds=pstep, s=sawbuf, n=noise; + float l0=lbuf0, l1=lbuf1, l2=lbuf2, l3=lbuf3; + float le=lenv, he=henv, et=lfreq*0.1f, lf=lfreq, v=vuv, mn=minp, mx=maxp; + float rootm=39.863137f; + long tr=track; + + --in1; + --in2; + --out1; + --out2; + while(--sampleFrames >= 0) + { + a = *++in1; + b = *++in2; + c = out1[1]; + d = out2[1]; + + l0 -= lf * (l1 + a); //fundamental filter (peaking 2nd-order 100Hz lpf) + l1 -= lf * (l1 - l0); + + b = l0; if(b<0.0f) b = -b; + le -= et * (le - b); //fundamental level + + b = (a + 0.03f) * v; + if(b<0.0f) b = -b; + he -= et * (he - b); //overall level (+ constant so >f0 when quiet) + + l3 += 1.0f; + if(tr>0) //pitch tracking + { + if(l1>0.0f && l2<=0.0f) //found +ve zero crossing + { + if(l3>mn && l3he) b *= s * n; //...or modulated breath noise + b += s; s += ds; if(s>0.5f) s-=1.0f; //badly aliased sawtooth! + + c += a; + d += b; + + *++out1 = c; + *++out2 = d; + } + sawbuf=s; + + if(fabs(he)>1.0e-10) henv = he; else henv=0.0f; //catch denormals + if(fabs(l1)>1.0e-10) { lbuf0=l0; lbuf1=l1; lenv=le; } else { lbuf0 = lbuf1= lenv = 0.0f; } + lbuf2=l2, lbuf3=l3; + if(tr) pstep=ds; +} + + +void mdaVocInput::processReplacing(float **inputs, float **outputs, LvzInt32 sampleFrames) +{ + float *in1 = inputs[0]; + float *in2 = inputs[1]; + float *out1 = outputs[0]; + float *out2 = outputs[1]; + float a, b; + float ds=pstep, s=sawbuf, n=noise; + float l0=lbuf0, l1=lbuf1, l2=lbuf2, l3=lbuf3; + float le=lenv, he=henv, et=lfreq*0.1f, lf=lfreq, v=vuv, mn=minp, mx=maxp; + float rootm=39.863137f; + long tr=track; + + --in1; + --in2; + --out1; + --out2; + while(--sampleFrames >= 0) + { + a = *++in1; + b = *++in2; + + l0 -= lf * (l1 + a); //fundamental filter (peaking 2nd-order 100Hz lpf) + l1 -= lf * (l1 - l0); + + b = l0; if(b<0.0f) b = -b; + le -= et * (le - b); //fundamental level + + b = (a + 0.03f) * v; + if(b<0.0f) b = -b; + he -= et * (he - b); //overall level (+ constant so >f0 when quiet) + + l3 += 1.0f; + if(tr>0) //pitch tracking + { + if(l1>0.0f && l2<=0.0f) //found +ve zero crossing + { + if(l3>mn && l3he) b *= s * n; //...or modulated breath noise + b += s; s += ds; if(s>0.5f) s-=1.0f; //badly aliased sawtooth! + + *++out1 = a; + *++out2 = b; + } + sawbuf=s; + + if(fabs(he)>1.0e-10) henv = he; else henv=0.0f; //catch denormals + if(fabs(l1)>1.0e-10) { lbuf0=l0; lbuf1=l1; lenv=le; } else { lbuf0 = lbuf1= lenv = 0.0f; } + lbuf2=l2, lbuf3=l3; + if(tr) pstep=ds; +} -- cgit v1.2.1