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authorConley Owens <cco3@android.com>2012-03-09 08:53:39 -0800
committerandroid code review <noreply-gerritcodereview@google.com>2012-03-09 08:53:40 -0800
commit6db6ea02b999e86dfbddd08780eeab0034389f93 (patch)
treece67aa6f5036d5b4a4405d0ef0682a947c42c189 /media/libstagefright
parent34ccd7af4216f571c2f88b32fea8bfed8ef0baab (diff)
parent27bd8da964055446a5f0d1696f412c854aaf7b70 (diff)
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Merge changes I00c852e4,Ib31bf028
* changes: stagefright aacenc: Avoid overflows when calculating normFactor stagefright aacenc: Avoid a division by zero
Diffstat (limited to 'media/libstagefright')
-rw-r--r--media/libstagefright/codecs/aacenc/src/adj_thr.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/media/libstagefright/codecs/aacenc/src/adj_thr.c b/media/libstagefright/codecs/aacenc/src/adj_thr.c
index 373b063..07b33b7 100644
--- a/media/libstagefright/codecs/aacenc/src/adj_thr.c
+++ b/media/libstagefright/codecs/aacenc/src/adj_thr.c
@@ -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];