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++;





 }
 }