diff options
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/echo/fir.h | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/drivers/staging/echo/fir.h b/drivers/staging/echo/fir.h index c29e1e245c6e..19c20cde186b 100644 --- a/drivers/staging/echo/fir.h +++ b/drivers/staging/echo/fir.h @@ -312,51 +312,6 @@ static __inline__ int16_t fir32(fir32_state_t *fir, int16_t sample) } /*- End of function --------------------------------------------------------*/ -#ifndef __KERNEL__ -static __inline__ const float *fir_float_create(fir_float_state_t *fir, - const float *coeffs, - int taps) -{ - fir->taps = taps; - fir->curr_pos = taps - 1; - fir->coeffs = coeffs; - fir->history = (float *) malloc(taps*sizeof(float)); - if (fir->history) - memset(fir->history, '\0', taps*sizeof(float)); - return fir->history; -} -/*- End of function --------------------------------------------------------*/ - -static __inline__ void fir_float_free(fir_float_state_t *fir) -{ - free(fir->history); -} -/*- End of function --------------------------------------------------------*/ - -static __inline__ int16_t fir_float(fir_float_state_t *fir, int16_t sample) -{ - int i; - float y; - int offset1; - int offset2; - - fir->history[fir->curr_pos] = sample; - - offset2 = fir->curr_pos; - offset1 = fir->taps - offset2; - y = 0; - for (i = fir->taps - 1; i >= offset1; i--) - y += fir->coeffs[i]*fir->history[i - offset1]; - for ( ; i >= 0; i--) - y += fir->coeffs[i]*fir->history[i + offset2]; - if (fir->curr_pos <= 0) - fir->curr_pos = fir->taps; - fir->curr_pos--; - return (int16_t) y; -} -/*- End of function --------------------------------------------------------*/ -#endif - #ifdef __cplusplus } #endif |