Avoid variable-length array use in ff_acelp_lspd2lpc()

[frescor/ffmpeg.git] / libavcodec / lsp.c

diff --git a/libavcodec/lsp.c b/libavcodec/lsp.c
index 420921639ffbe9675c0f42fa1f73e3d2d1e022a9..ffd2410b48f137816936400507b26d8df739e735 100644 (file)
--- a/libavcodec/lsp.c
+++ b/libavcodec/lsp.c
@@ -157,9 +157,11 @@ static void lsp2polyf(const double *lsp, double *f, int lp_half_order)
 
 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);