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https://github.com/mollyim/webrtc.git
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e058568cc5
It's always been there, and there's no security risk. Bug: chromium:843477 Change-Id: I6121943f23b477300cf60ffc4858ef0ab43466dc Reviewed-on: https://webrtc-review.googlesource.com/78782 Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org> Commit-Queue: Karl Wiberg <kwiberg@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23393}
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/******************************************************************
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iLBC Speech Coder ANSI-C Source Code
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WebRtcIlbcfix_Smooth_odata.c
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******************************************************************/
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#include "modules/audio_coding/codecs/ilbc/defines.h"
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#include "modules/audio_coding/codecs/ilbc/constants.h"
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#include "rtc_base/sanitizer.h"
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// An s32 + s32 -> s32 addition that's allowed to overflow. (It's still
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// undefined behavior, so not a good idea; this just makes UBSan ignore the
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// violation, so that our old code can continue to do what it's always been
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// doing.)
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static inline int32_t RTC_NO_SANITIZE("signed-integer-overflow")
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OverflowingAdd_S32_S32_To_S32(int32_t a, int32_t b) {
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return a + b;
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}
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int32_t WebRtcIlbcfix_Smooth_odata(
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int16_t *odata,
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int16_t *psseq,
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int16_t *surround,
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int16_t C)
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{
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int i;
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int16_t err;
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int32_t errs;
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for(i=0;i<80;i++) {
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odata[i]= (int16_t)((C * surround[i] + 1024) >> 11);
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}
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errs=0;
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for(i=0;i<80;i++) {
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err = (psseq[i] - odata[i]) >> 3;
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errs = OverflowingAdd_S32_S32_To_S32(errs, err * err); // errs in Q-6
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}
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return errs;
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}
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