* Quantize LPC coefficients
*/
static void quantize_lpc_coefs(double *lpc_in, int order, int precision,
- int32_t *lpc_out, int *shift, int max_shift, int zero_shift)
+ int32_t *lpc_out, int *shift, int min_shift,
+ int max_shift, int zero_shift)
{
int i;
double cmax, error;
/* calculate level shift which scales max coeff to available bits */
sh = max_shift;
- while((cmax * (1 << sh) > qmax) && (sh > 0)) {
+ while((cmax * (1 << sh) > qmax) && (sh > min_shift)) {
sh--;
}
int max_order, int precision,
int32_t coefs[][MAX_LPC_ORDER], int *shift,
enum FFLPCType lpc_type, int lpc_passes,
- int omethod, int max_shift, int zero_shift)
+ int omethod, int min_shift, int max_shift, int zero_shift)
{
double autoc[MAX_LPC_ORDER+1];
double ref[MAX_LPC_ORDER] = { 0 };
if(omethod == ORDER_METHOD_EST) {
opt_order = estimate_best_order(ref, min_order, max_order);
i = opt_order-1;
- quantize_lpc_coefs(lpc[i], i+1, precision, coefs[i], &shift[i], max_shift, zero_shift);
+ quantize_lpc_coefs(lpc[i], i+1, precision, coefs[i], &shift[i],
+ min_shift, max_shift, zero_shift);
} else {
for(i=min_order-1; i<max_order; i++) {
- quantize_lpc_coefs(lpc[i], i+1, precision, coefs[i], &shift[i], max_shift, zero_shift);
+ quantize_lpc_coefs(lpc[i], i+1, precision, coefs[i], &shift[i],
+ min_shift, max_shift, zero_shift);
}
}