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Fixing an overflow issue in NetEq::BackgroundNoise

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BUG=chromium:676941

Review-Url: https://codereview.webrtc.org/2722533002
Cr-Commit-Position: refs/heads/master@{#16938}
This commit is contained in:
henrik.lundin
2017-03-01 03:06:50 -08:00
committed by Commit bot
parent f31969a584
commit a67e5f5de9
1 changed files with 3 additions and 3 deletions
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6
webrtc/modules/audio_coding/neteq/background_noise.cc
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@ -101,10 +101,10 @@ void BackgroundNoise::Update(const AudioMultiVector& input,
// Check spectral flatness.
// Comparing the residual variance with the input signal variance tells
// if the spectrum is flat or not.
// If 20 * residual_energy >= sample_energy << 6, the spectrum is flat
// If 5 * residual_energy >= 16 * sample_energy, the spectrum is flat
// enough. Also ensure that the energy is non-zero.
if ((residual_energy * 20 >= (sample_energy << 6)) &&
(sample_energy > 0)) {
if ((sample_energy > 0) &&
(int64_t{5} * residual_energy >= int64_t{16} * sample_energy)) {
// Spectrum is flat enough; save filter parameters.
// |temp_signal| + |kVecLen| - |kMaxLpcOrder| points at the first of the
// |kMaxLpcOrder| samples in the residual signal, which will form the