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Avoid negation of INT_MIN in dst_IV().

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Bug: 145669114
Test: atest DecoderTestXheAac ; atest DecoderTestAacDrc
Change-Id: I6ddd7a39376c5276ec636572c3bfd4d83d05f9f5
This commit is contained in:
Fraunhofer IIS FDK 2019-10-29 13:09:56 +01:00 committed by Jean-Michel Trivi
parent 2334454bc8
commit 40c083f59a
1 changed files with 9 additions and 9 deletions
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18
libFDK/src/dct.cpp
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@ -1,7 +1,7 @@
/* -----------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
© Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten
© Copyright 1995 - 2019 Fraunhofer-Gesellschaft zur Förderung der angewandten
Forschung e.V. All rights reserved.
1. INTRODUCTION
@ -489,18 +489,18 @@ void dst_IV(FIXP_DBL *pDat, int L, int *pDat_e) {
for (i = 0; i < M - 1; i += 2, pDat_0 += 2, pDat_1 -= 2) {
FIXP_DBL accu1, accu2, accu3, accu4;
accu1 = pDat_1[1];
accu2 = -pDat_0[0];
accu3 = pDat_0[1];
accu4 = -pDat_1[0];
accu1 = pDat_1[1] >> 1;
accu2 = -(pDat_0[0] >> 1);
accu3 = pDat_0[1] >> 1;
accu4 = -(pDat_1[0] >> 1);
cplxMultDiv2(&accu1, &accu2, accu1, accu2, twiddle[i]);
cplxMultDiv2(&accu3, &accu4, accu4, accu3, twiddle[i + 1]);
pDat_0[0] = accu2 >> 1;
pDat_0[1] = accu1 >> 1;
pDat_1[0] = accu4 >> 1;
pDat_1[1] = -(accu3 >> 1);
pDat_0[0] = accu2;
pDat_0[1] = accu1;
pDat_1[0] = accu4;
pDat_1[1] = -accu3;
}
if (M & 1) {
FIXP_DBL accu1, accu2;