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/mdaDegrade.cpp | 267 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 267 insertions(+) create mode 100644 src/mdaDegrade.cpp (limited to 'src/mdaDegrade.cpp') diff --git a/src/mdaDegrade.cpp b/src/mdaDegrade.cpp new file mode 100644 index 0000000..7ad1a82 --- /dev/null +++ b/src/mdaDegrade.cpp @@ -0,0 +1,267 @@ +#include "mdaDegrade.h" + +#include +#include + +AudioEffect *createEffectInstance(audioMasterCallback audioMaster) +{ + return new mdaDegrade(audioMaster); +} + +mdaDegrade::mdaDegrade(audioMasterCallback audioMaster) : AudioEffectX(audioMaster, 1, 6) // programs, parameters +{ + //inits here! + fParam1 = (float)0.8; //clip + fParam2 = (float)0.50; //bits + fParam3 = (float)0.65; //rate + fParam4 = (float)0.9; //postfilt + fParam5 = (float)0.58; //non-lin + fParam6 = (float)0.5; //level + + setNumInputs(2); + setNumOutputs(2); + setUniqueID("mdaC"); // identify here + DECLARE_LVZ_DEPRECATED(canMono) (); + canProcessReplacing(); + strcpy(programName, "Degrade"); + + buf0 = buf1 = buf2 = buf3 = buf4 = buf5 = buf6 = buf7 = buf8 = buf9 = 0.0f; + + setParameter(5, 0.5f); +} + +bool mdaDegrade::getProductString(char* text) { strcpy(text, "mda Degrade"); return true; } +bool mdaDegrade::getVendorString(char* text) { strcpy(text, "mda"); return true; } +bool mdaDegrade::getEffectName(char* name) { strcpy(name, "Degrade"); return true; } + +void mdaDegrade::setParameter(LvzInt32 index, float value) +{ + float f; + + switch(index) + { + case 0: fParam1 = value; break; + case 1: fParam2 = value; break; + case 2: fParam3 = value; break; + case 3: fParam4 = value; break; + case 4: fParam5 = value; break; + case 5: fParam6 = value; break; + } + //calcs here + if(fParam3>0.5) { f = fParam3 - 0.5f; mode = 1.0f; } + else { f = 0.5f - fParam3; mode = 0.0f; } + + tn = (int)exp(18.0f * f); + + //tn = (int)(18.0 * fParam3 - 8.0); mode=1.f; } + // else { tn = (int)(10.0 - 18.0 * fParam3); mode=0.f; } + tcount = 1; + clp = (float)(pow(10.0,(-1.5 + 1.5 * fParam1)) ); + fo2 = filterFreq((float)pow(10.0f, 2.30104f + 2.f*fParam4)); + fi2 = (1.f-fo2); fi2=fi2*fi2; fi2=fi2*fi2; + float _g1 = (float)(pow(2.0,2.0 + int(fParam2*12.0))); + g2 = (float)(1.0/(2.0 * _g1)); + if(fParam3>0.5) g1 = -_g1/(float)tn; else g1= -_g1; + g3 = (float)(pow(10.0,2.0*fParam6 - 1.0)); + if(fParam5>0.5) { lin = (float)(pow(10.0,0.3 * (0.5 - fParam5))); lin2=lin; } + else { lin = (float)pow(10.0,0.3 * (fParam5 - 0.5)); lin2=1.0; } +} + +mdaDegrade::~mdaDegrade() +{ +} + +void mdaDegrade::suspend() +{ +} + +float mdaDegrade::filterFreq(float hz) +{ + float j, k, r=0.999f; + + j = r * r - 1; + k = (float)(2.f - 2.f * r * r * cos(0.647f * hz / getSampleRate() )); + return (float)((sqrt(k*k - 4.f*j*j) - k) / (2.f*j)); +} + +void mdaDegrade::setProgramName(char *name) +{ + strcpy(programName, name); +} + +void mdaDegrade::getProgramName(char *name) +{ + strcpy(name, programName); +} + +float mdaDegrade::getParameter(LvzInt32 index) +{ + float v=0; + + switch(index) + { + case 0: v = fParam1; break; + case 1: v = fParam2; break; + case 2: v = fParam3; break; + case 3: v = fParam4; break; + case 4: v = fParam5; break; + case 5: v = fParam6; break; + } + return v; +} + +void mdaDegrade::getParameterName(LvzInt32 index, char *label) +{ + switch(index) + { + case 0: strcpy(label, "Headroom"); break; + case 1: strcpy(label, "Quant"); break; + case 2: strcpy(label, "Rate"); break; + case 3: strcpy(label, "PostFilt"); break; + case 4: strcpy(label, "Non-Lin"); break; + case 5: strcpy(label, "Output"); break; + } +} + +#include +void long2string(long value, char *string) { sprintf(string, "%ld", value); } + +void mdaDegrade::getParameterDisplay(LvzInt32 index, char *text) +{ + switch(index) + { + case 0: long2string((long)(-30.0 * (1.0 - fParam1)), text); break; + case 1: long2string((long)(4.0 + 12.0 * fParam2), text); break; + case 2: long2string((long)(getSampleRate()/tn), text); break; + case 3: long2string((long)pow(10.0f, 2.30104f + 2.f*fParam4), text); break; + case 4: long2string((long)(200.0 * fabs(fParam5 - 0.5)), text); break; + case 5: long2string((long)(40.0 * fParam6 - 20.0), text); break; + } +} + +void mdaDegrade::getParameterLabel(LvzInt32 index, char *label) +{ + switch(index) + { + case 0: strcpy(label, "dB"); break; + case 1: strcpy(label, "bits"); break; + case 2: strcpy(label, "S<>S&&H"); break; + case 3: strcpy(label, "Hz"); break; + case 4: strcpy(label, "Odd<>Eve"); break; + } +} + +//-------------------------------------------------------------------------------- +// process + +void mdaDegrade::process(float **inputs, float **outputs, LvzInt32 sampleFrames) +{ + float *in1 = inputs[0]; + float *in2 = inputs[1]; + float *out1 = outputs[0]; + float *out2 = outputs[1]; + float b0=buf0, c, d, l=lin, l2=lin2; + float cl=clp, i2=fi2, o2=fo2; + float b1=buf1, b2=buf2, b3=buf3, b4=buf4, b5=buf5; + float b6=buf6, b7=buf7, b8=buf8, b9=buf9; + float gi=g1, go=g2, ga=g3, m=mode; + int n=tn, t=tcount; + + --in1; + --in2; + --out1; + --out2; + while(--sampleFrames >= 0) + { + c = out1[1]; + d = out2[1]; //process from here... + + b0 = (*++in1 + *++in2) + m * b0; + + if(t==n) + { + t=0; + b5 = (float)(go * int(b0 * gi)); + if(b5>0) + { b5=(float)pow(b5,l2); if(b5>cl) b5=cl;} + else + { b5=-(float)pow(-b5,l); if(b5<-cl) b5=-cl; } + b0=0; + } + t=t+1; + + b1 = i2 * (b5 * ga) + o2 * b1; + b2 = b1 + o2 * b2; + b3 = b2 + o2 * b3; + b4 = b3 + o2 * b4; + b6 = i2 * b4 + o2 * b6; + b7 = b6 + o2 * b7; + b8 = b7 + o2 * b8; + b9 = b8 + o2 * b9; + + c += b9; // output + d += b9; + + *++out1 = c; + *++out2 = d; + } + if(fabs(b1)<1.0e-10) + { buf1=0.f; buf2=0.f; buf3=0.f; buf4=0.f; buf6=0.f; buf7=0.f; + buf8=0.f; buf9=0.f; buf0=0.f; buf5=0.f; } + else + { buf1=b1; buf2=b2; buf3=b3; buf4=b4; buf6=b6; buf7=b7; + buf8=b8, buf9=b9; buf0=b0; buf5=b5; tcount=t; } +} + +void mdaDegrade::processReplacing(float **inputs, float **outputs, LvzInt32 sampleFrames) +{ + float *in1 = inputs[0]; + float *in2 = inputs[1]; + float *out1 = outputs[0]; + float *out2 = outputs[1]; + float b0=buf0, l=lin, l2=lin2; + float cl=clp, i2=fi2, o2=fo2; + float b1=buf1, b2=buf2, b3=buf3, b4=buf4, b5=buf5; + float b6=buf6, b7=buf7, b8=buf8, b9=buf9; + float gi=g1, go=g2, ga=g3, m=mode; + int n=tn, t=tcount; + + --in1; + --in2; + --out1; + --out2; + while(--sampleFrames >= 0) + { + b0 = (*++in1 + *++in2) + m * b0; + + if(t==n) + { + t=0; + b5 = (float)(go * int(b0 * gi)); + if(b5>0) + { b5=(float)pow(b5,l2); if(b5>cl) b5=cl;} + else + { b5=-(float)pow(-b5,l); if(b5<-cl) b5=-cl; } + b0=0; + } + t=t+1; + + b1 = i2 * (b5 * ga) + o2 * b1; + b2 = b1 + o2 * b2; + b3 = b2 + o2 * b3; + b4 = b3 + o2 * b4; + b6 = i2 * b4 + o2 * b6; + b7 = b6 + o2 * b7; + b8 = b7 + o2 * b8; + b9 = b8 + o2 * b9; + + *++out1 = b9; + *++out2 = b9; + } + if(fabs(b1)<1.0e-10) + { buf1=0.f; buf2=0.f; buf3=0.f; buf4=0.f; buf6=0.f; buf7=0.f; + buf8=0.f; buf9=0.f; buf0=0.f; buf5=0.f; } + else + { buf1=b1; buf2=b2; buf3=b3; buf4=b4; buf6=b6; buf7=b7; + buf8=b8, buf9=b9; buf0=b0; buf5=b5; tcount=t; } +} -- cgit v1.2.1