Fix overflows in accumulation, fixing crashes

This fixes github issue #83.
mstorsjo · May 4, 2018 · 29e4d6c · 29e4d6c
1 parent ca3697f
commit 29e4d6c
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/libSBRenc/src/tran_det.cpp b/libSBRenc/src/tran_det.cpp
@@ -256,12 +256,12 @@ static FIXP_DBL addLowbandEnergies(FIXP_DBL **Energies,
   /* freqBandTable[LORES] has MAX_FREQ_COEFFS/2 +1 coeefs max. */
   for (ts=tran_offdiv2; ts<YBufferWriteOffset; ts++) {
     for (k = 0; k < freqBandTable[0]; k++) {
-      accu1 += Energies[ts][k] >> 6;
+      accu1 = fAddSaturate(accu1, Energies[ts][k] >> 6);
     }
   }
   for (; ts<tran_offdiv2+(slots>>nrgSzShift); ts++) {
     for (k = 0; k < freqBandTable[0]; k++) {
-      accu2 += Energies[ts][k] >> 9;
+      accu2 = fAddSaturate(accu2, Energies[ts][k] >> 9);
     }
   }