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| #ifndef UTILS_H
| #define UTILS_H
|
| #include "c_types.h"
|
| typedef struct _biquad {
|
| S2byte negb12;
| S2byte a12;
| S2byte negb11;
| S2byte a11;
| S2byte a0;
| S2byte dn_2;
| S2byte dn_1;
|
| } t_biquad;
|
| #define abs16(data) ((data < 0) ? -data : data)
| #define MIN_16 0x8000
| #define MAX_16 0x7fff
|
| #define TRUE true
| #define FALSE false
|
| extern S2byte sature16(S4byte data);
|
| extern void bqProcess (t_biquad *bq, S2byte *datain, S2byte *dataout, int n);
|
| extern void bqInit (t_biquad *bq, S2byte a0, S2byte a1, S2byte a2, S2byte b1, S2byte b2);
|
| extern void calcPower ( int length, U4byte *datain, float *logout); // formerly called log10_32()
|
| #endif
|
|
