shithub: opus

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Avoid the unnecessary resynth averaging on intensity switch when encoding.

Prevents some arithmetic on uninitialized memory that may contain nans.

--- a/celt/bands.c

+++ b/celt/bands.c

@@ -1267,8 +1267,9 @@

          /* Switch off dual stereo to do intensity */

          dual_stereo = 0;

-         for (j=M*eBands[start];j<M*eBands[i];j++)

-            norm[j] = HALF32(norm[j]+norm2[j]);

+         if (resynth)

+            for (j=M*eBands[start];j<M*eBands[i];j++)

+               norm[j] = HALF32(norm[j]+norm2[j]);

       }

       if (dual_stereo)

       {