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Integer overflow fix in _compressorIO_sigmoid() 

Test: atest DecoderTestXheAac ; atest DecoderTestAacDrc

Change-Id: I3b7c72a85fc735469cc785ca5aa0545485b91532
This commit is contained in:
Fraunhofer IIS FDK 2018-12-20 15:52:46 +01:00 committed by Jean-Michel Trivi
parent 7884aefc84
commit 691d00e6fa
1 changed files with 3 additions and 2 deletions
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5
libDRCdec/src/drcGainDec_preprocess.cpp
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@ -300,8 +300,9 @@ static DRC_ERROR _compressorIO_sigmoid(const CUSTOM_DRC_CHAR_SIGMOID* pCChar,
FIXP_SGL exp = pCChar->exp;
DRC_ERROR err = DE_OK;
tmp = fMultDiv2(DRC_INPUT_LOUDNESS_TARGET - inLevelDb, pCChar->ioRatio);
tmp = SATURATE_LEFT_SHIFT(tmp, 2 + 1, DFRACT_BITS);
tmp = fMultDiv2((DRC_INPUT_LOUDNESS_TARGET >> 1) - (inLevelDb >> 1),
pCChar->ioRatio);
tmp = SATURATE_LEFT_SHIFT(tmp, 2 + 1 + 1, DFRACT_BITS);
if (exp < (FIXP_SGL)MAXVAL_SGL) {
/* x = tmp / gainDbLimit; */
/* *outGainDb = tmp / pow(1.0f + pow(x, exp), 1.0f/exp); */