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Commit 5d181e42 authored by Conley Owens's avatar Conley Owens Committed by Android Git Automerger
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am 66da3fdc: am 972efafb: am 6db6ea02: Merge changes I00c852e4,Ib31bf028 

* commit '66da3fdce4dc61f7d1c125eda9b2e065658cc0e5':
  stagefright aacenc: Avoid overflows when calculating normFactor
  stagefright aacenc: Avoid a division by zero
parents a8806396 62dac15d

media/libstagefright/codecs/aacenc/src/adj_thr.c

+2 −2
Original line number Diff line number Diff line
@@ -438,7 +438,7 @@ static void correctThresh(PSY_OUT_CHANNEL psyOutChannel[MAX_CHANNELS], 
	  for (sfb=0; sfb<psyOutChan->maxSfbPerGroup; sfb++) {

        Word32 redThrExp = thrExp[ch][sfbGrp+sfb] + redVal;



        if (((*pahFlag < AH_ACTIVE) || (deltaPe > 0)) && (redThrExp > 0) ) {

        if (((*pahFlag < AH_ACTIVE) || (deltaPe > 0)) && (redThrExp > 0) && (redThrExp >= *psfbNActiveLines)) {



          *psfbPeFactors = (*psfbNActiveLines) * (0x7fffffff / redThrExp);

          normFactor = L_add(normFactor, *psfbPeFactors);
@@ -466,7 +466,7 @@ static void correctThresh(PSY_OUT_CHANNEL psyOutChannel[MAX_CHANNELS], 
        deltaSfbPe = *psfbPeFactors * deltaPe;



		/* thr3(n) = thr2(n)*2^deltaSfbPe/b(n) */

        if (*psfbNActiveLines > 0) {

        if (*psfbNActiveLines > 0 && (normFactor* (*psfbNActiveLines)) != 0) {

          /* new threshold */

          Word32 thrFactor;

          sfbEn  = psyOutChan->sfbEnergy[sfbGrp+sfb];