/* Copyright 2008-2011 David Robillard 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 . */ #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("mdaDegrade"); // 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(int32_t 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); } bool mdaDegrade::getProgramNameIndexed (int32_t category, int32_t index, char* name) { if (index == 0) { strcpy(name, programName); return true; } return false; } float mdaDegrade::getParameter(int32_t 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(int32_t 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 static void int2strng(int32_t value, char *string) { sprintf(string, "%d", value); } void mdaDegrade::getParameterDisplay(int32_t index, char *text) { switch(index) { case 0: int2strng((int32_t)(-30.0 * (1.0 - fParam1)), text); break; case 1: int2strng((int32_t)(4.0 + 12.0 * fParam2), text); break; case 2: int2strng((int32_t)(getSampleRate()/tn), text); break; case 3: int2strng((int32_t)pow(10.0f, 2.30104f + 2.f*fParam4), text); break; case 4: int2strng((int32_t)(200.0 * fabs(fParam5 - 0.5)), text); break; case 5: int2strng((int32_t)(40.0 * fParam6 - 20.0), text); break; } } void mdaDegrade::getParameterLabel(int32_t 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, int32_t 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, int32_t 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; } }