void ff_acelp_lspd2lpc(const double *lsp, float *lpc, int lp_half_order)
{
- double pa[lp_half_order+1], qa[lp_half_order+1];
+ double pa[MAX_LP_HALF_ORDER+1], qa[MAX_LP_HALF_ORDER+1];
float *lpc2 = lpc + (lp_half_order << 1) - 1;
+ assert(lp_half_order <= MAX_LP_HALF_ORDER);
+
lsp2polyf(lsp, pa, lp_half_order);
lsp2polyf(lsp + 1, qa, lp_half_order);
*/
void ff_acelp_lp_decode(int16_t* lp_1st, int16_t* lp_2nd, const int16_t* lsp_2nd, const int16_t* lsp_prev, int lp_order);
+
+#define MAX_LP_HALF_ORDER 8
+
/**
* Reconstructs LPC coefficients from the line spectral pair frequencies.
*
* @param lsp line spectral pairs in cosine domain
* @param lpc linear predictive coding coefficients
+ * @param lp_half_order half the number of the amount of LPCs to be
+ * reconstructed, need to be smaller or equal to MAX_LP_HALF_ORDER
*
* @note buffers should have a minimux size of 2*lp_half_order elements.
*