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flanger.cc

namespace flanger {
// generated from file '../src/faust/flanger.dsp'

FAUSTFLOAT  fslider0;
int   iVec0[2];
FAUSTFLOAT  fslider1;
int   IOTA;
double      fVec1[2048];
FAUSTFLOAT  fslider2;
double      fConst0;
double      fRec1[2];
double      fRec2[2];
FAUSTFLOAT  fslider3;
FAUSTFLOAT  fslider4;
double      fRec0[2];
FAUSTFLOAT  fslider5;
FAUSTFLOAT  fcheckbox0;
double      fVec2[2048];
double      fRec3[2];
int   fSamplingFreq;

void init(int samplingFreq)
{
      fSamplingFreq = samplingFreq;
      for (int i=0; i<2; i++) iVec0[i] = 0;
      IOTA = 0;
      for (int i=0; i<2048; i++) fVec1[i] = 0;
      fConst0 = (6.283185307179586 / fSamplingFreq);
      for (int i=0; i<2; i++) fRec1[i] = 0;
      for (int i=0; i<2; i++) fRec2[i] = 0;
      for (int i=0; i<2; i++) fRec0[i] = 0;
      for (int i=0; i<2048; i++) fVec2[i] = 0;
      for (int i=0; i<2; i++) fRec3[i] = 0;
}

void compute(int count, float *input0, float *input1, float *output0, float *output1)
{
      double      fSlow0 = pow(10,(0.05 * fslider0));
      double      fSlow1 = fslider1;
      double      fSlow2 = (fConst0 * fslider2);
      double      fSlow3 = sin(fSlow2);
      double      fSlow4 = cos(fSlow2);
      double      fSlow5 = (0 - fSlow3);
      double      fSlow6 = (0.0005 * fslider3);
      double      fSlow7 = (0.001 * fslider4);
      double      fSlow8 = fslider5;
      double      fSlow9 = ((int(fcheckbox0))?(0 - fSlow8):fSlow8);
      for (int i=0; i<count; i++) {
            double fTemp0 = (fSlow0 * (double)input0[i]);
            iVec0[0] = 1;
            double fTemp1 = ((fSlow1 * fRec0[1]) - fTemp0);
            fVec1[IOTA&2047] = fTemp1;
            fRec1[0] = ((fSlow4 * fRec1[1]) + (fSlow3 * fRec2[1]));
            fRec2[0] = ((1 + ((fSlow5 * fRec1[1]) + (fSlow4 * fRec2[1]))) - iVec0[1]);
            double fTemp2 = (fSamplingFreq * (fSlow7 + (fSlow6 * (1 + fRec1[0]))));
            int iTemp3 = int(fTemp2);
            int iTemp4 = (1 + iTemp3);
            fRec0[0] = (((fTemp2 - iTemp3) * fVec1[(IOTA-int((int(iTemp4) & 2047)))&2047]) + ((iTemp4 - fTemp2) * fVec1[(IOTA-int((iTemp3 & 2047)))&2047]));
            output0[i] = (FAUSTFLOAT)(0.5 * ((fSlow9 * fRec0[0]) + fTemp0));
            double fTemp5 = (fSlow0 * (double)input1[i]);
            double fTemp6 = ((fSlow1 * fRec3[1]) - fTemp5);
            fVec2[IOTA&2047] = fTemp6;
            double fTemp7 = (fSamplingFreq * (fSlow7 + (fSlow6 * (1 + fRec2[0]))));
            int iTemp8 = int(fTemp7);
            int iTemp9 = (1 + iTemp8);
            fRec3[0] = (((fTemp7 - iTemp8) * fVec2[(IOTA-int((int(iTemp9) & 2047)))&2047]) + ((iTemp9 - fTemp7) * fVec2[(IOTA-int((iTemp8 & 2047)))&2047]));
            output1[i] = (FAUSTFLOAT)(0.5 * (fTemp5 + (fSlow9 * fRec3[0])));
            // post processing
            fRec3[1] = fRec3[0];
            fRec0[1] = fRec0[0];
            fRec2[1] = fRec2[0];
            fRec1[1] = fRec1[0];
            IOTA = IOTA+1;
            iVec0[1] = iVec0[0];
      }
}

static struct RegisterParams { RegisterParams(); } RegisterParams;
RegisterParams::RegisterParams()
{
      static const char *fcheckbox0_values[] = {"linear","invert",0};
      registerEnumVar("flanger.invert","","B","",fcheckbox0_values,&fcheckbox0, 0.0, 0.0, 1.0, 1.0);
      registerVar("flanger.depth","","S","",&fslider5, 1.0, 0.0, 1.0, 0.01);
      registerVar("flanger.flange delay offset","","S","",&fslider4, 1.0, 0.0, 2e+01, 0.01);
      registerVar("flanger.flange delay","","S","",&fslider3, 1e+01, 0.0, 2e+01, 0.01);
      registerVar("flanger.LFO freq","","S","",&fslider2, 0.2, 0.0, 5.0, 0.01);
      registerVar("flanger.feedback gain","","S","",&fslider1, 0.0, 0.0, 1.0, 0.01);
      registerVar("flanger.level","","S","",&fslider0, 0.0, -6e+01, 1e+01, 0.1);
      registerInit("flanger", init);
}

} // end namespace flanger

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