shithub: opus

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Fixes a fixed-point overflow in stereo angle calculation

--- a/libcelt/vq.c

+++ b/libcelt/vq.c

@@ -381,8 +381,8 @@

       for (i=0;i<N;i++)

       {

          celt_norm m, s;

-         m = X[i]+Y[i];

-         s = X[i]-Y[i];

+         m = ADD16(SHR16(X[i],1),SHR16(Y[i],1));

+         s = SUB16(SHR16(X[i],1),SHR16(Y[i],1));

          Emid = MAC16_16(Emid, m, m);

          Eside = MAC16_16(Eside, s, s);

       }