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//************************************************************//
// Oscilt.cpp : implementation of the Oscili class //
// (interpolating oscillator). //
// //
// //
//************************************************************//
#include "Oscili.h"
//////////// CONSTRUCTION / DESTRUCTION ////////////////////////
Oscili::Oscili(){}
Oscili::Oscili(Table* table, float fr,
float amp, SndObj* inputfreq,
SndObj* inputamp, int vecsize, float sr)
: Oscil(table, fr, amp,
inputfreq, inputamp, vecsize, sr){
}
Oscili::~Oscili(){}
////////////////// OPERATIONS ////////////////////////////////////
short
Oscili :: DoProcess(){
if(!m_error) {
// wrapping loop
float fr;
float amp;
if(!m_ptable){
m_error = 1; // empty table object
return 0;
}
float* tab = m_ptable->GetTable();
int i;
for(m_vecpos = 0; m_vecpos < m_vecsize; m_vecpos++){
if(m_enable){
fr = m_fr + (m_input == 0 ? 0 : m_input->Output(m_vecpos));
amp = m_amp + (m_inputamp== 0 ? 0 : m_inputamp->Output(m_vecpos));
i = (int) m_index;
m_output[m_vecpos] = amp*(tab[i] +
((tab[i] - tab[i+1])*((int)m_index - m_index)));
m_incr = fr * m_factor;
m_index += m_incr; // increment m_index
while(m_index >= m_size)
m_index -= m_size; // modulus
while (m_index < 0)
m_index += m_size;
}else {
m_output[m_vecpos] = 0.f;
}
} // end wrapping loop
return 1;
}
else return 0;
}
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