hpInput.h File Reference

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Functions
void	hpInput (float *In, int len, float *Out, float *mem)

Function Documentation

hpInput()

void hpInput	(	float *	In,
		int	len,
		float *	Out,
		float *	mem
	)

Definition at line 23 of file hpInput.c.

References hpi_pole_coefsTbl, hpi_zero_coefsTbl, and len().

Referenced by iLBC_encode().

    {
       int i;
       float *pi, *po;

       /* all-zero section*/

       pi = &In[0];
       po = &Out[0];
       for (i=0; i<len; i++) {
           *po = hpi_zero_coefsTbl[0] * (*pi);
           *po += hpi_zero_coefsTbl[1] * mem[0];
           *po += hpi_zero_coefsTbl[2] * mem[1];

           mem[1] = mem[0];
           mem[0] = *pi;
           po++;
           pi++;

       }

       /* all-pole section*/

       po = &Out[0];
       for (i=0; i<len; i++) {
           *po -= hpi_pole_coefsTbl[1] * mem[2];
           *po -= hpi_pole_coefsTbl[2] * mem[3];

           mem[3] = mem[2];
           mem[2] = *po;
           po++;





       }
   }