Asterisk - The Open Source Telephony Project GIT-master-f36a736
Functions
hpOutput.h File Reference
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Functions

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

Function Documentation

◆ hpOutput()

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

Definition at line 19 of file hpOutput.c.

29 {
30 int i;
31 float *pi, *po;
32
33 /* all-zero section*/
34
35 pi = &In[0];
36 po = &Out[0];
37 for (i=0; i<len; i++) {
38 *po = hpo_zero_coefsTbl[0] * (*pi);
39 *po += hpo_zero_coefsTbl[1] * mem[0];
40 *po += hpo_zero_coefsTbl[2] * mem[1];
41
42 mem[1] = mem[0];
43 mem[0] = *pi;
44 po++;
45 pi++;
46
47 }
48
49 /* all-pole section*/
50
51 po = &Out[0];
52 for (i=0; i<len; i++) {
53 *po -= hpo_pole_coefsTbl[1] * mem[2];
54 *po -= hpo_pole_coefsTbl[2] * mem[3];
55
56 mem[3] = mem[2];
57 mem[2] = *po;
58 po++;
59 }
60 }
float hpo_pole_coefsTbl[3]
Definition: constants.c:83
float hpo_zero_coefsTbl[3]
Definition: constants.c:80
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)

References hpo_pole_coefsTbl, hpo_zero_coefsTbl, and len().

Referenced by iLBC_decode().