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Fix for left shift of negative value in NetEq.

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BUG=chromium:666612

Review-Url: https://codereview.webrtc.org/2569193002
Cr-Commit-Position: refs/heads/master@{#15596}
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ivoc 2016-12-14 01:59:59 -08:00 committed by Commit bot
parent bd6c6fa309
commit 7b2516620c
1 changed files with 1 additions and 2 deletions
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3
webrtc/common_audio/signal_processing/levinson_durbin.c
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@ -51,8 +51,7 @@ int16_t WebRtcSpl_LevinsonDurbin(const int32_t* R, int16_t* A, int16_t* K,
// K = A[1] = -R[1] / R[0]
temp2W32 = WEBRTC_SPL_LSHIFT_W32((int32_t)R_hi[1],16)
+ WEBRTC_SPL_LSHIFT_W32((int32_t)R_low[1],1); // R[1] in Q31
temp2W32 = R[1] * (1 << norm); // R[1] in Q31
temp3W32 = WEBRTC_SPL_ABS_W32(temp2W32); // abs R[1]
temp1W32 = WebRtcSpl_DivW32HiLow(temp3W32, R_hi[0], R_low[0]); // abs(R[1])/R[0] in Q31
// Put back the sign on R[1]