}
/**
- * \brief decodes polynomial coefficients from LSP
- * \param f [out] decoded polynomial coefficients (-0x20000000 <= (3.22) <= 0x1fffffff)
- * \param lsp LSP coefficients (-0x8000 <= (0.15) <= 0x7fff)
+ * @brief decodes polynomial coefficients from LSP
+ * @param[out] f decoded polynomial coefficients (-0x20000000 <= (3.22) <= 0x1fffffff)
+ * @param lsp LSP coefficients (-0x8000 <= (0.15) <= 0x7fff)
*/
static void lsp2poly(int* f, const int16_t* lsp, int lp_half_order)
{
void ff_amrwb_lsp2lpc(const double *lsp, float *lp, int lp_order)
{
int lp_half_order = lp_order >> 1;
- double buf[lp_half_order + 1];
- double pa[lp_half_order + 1];
+ double buf[MAX_LP_HALF_ORDER + 1];
+ double pa[MAX_LP_HALF_ORDER + 1];
double *qa = buf + 1;
int i,j;
/* LSP values for first subframe (3.2.5 of G.729, Equation 24)*/
for(i=0; i<lp_order; i++)
-#ifdef G729_BITEXACT
- lsp_1st[i] = (lsp_2nd[i] >> 1) + (lsp_prev[i] >> 1);
-#else
lsp_1st[i] = (lsp_2nd[i] + lsp_prev[i]) >> 1;
-#endif
ff_acelp_lsp2lpc(lp_1st, lsp_1st, lp_order >> 1);