Fix benign overflow in getTimeUsOfGranule (894aa94e) · Commits · e / os / android_frameworks_av

media/libstagefright/OggExtractor.cpp

+6 −0

Original line number	Diff line number	Diff line
		@@ -178,6 +178,9 @@ struct MyVorbisExtractor : public MyOggExtractor {

		protected:
		virtual int64_t getTimeUsOfGranule(uint64_t granulePos) const {
		if (granulePos > INT64_MAX / 1000000ll) {
		return INT64_MAX;
		}
		return granulePos * 1000000ll / mVi.rate;
		}

		@@ -921,6 +924,9 @@ int64_t MyOpusExtractor::getTimeUsOfGranule(uint64_t granulePos) const {
		if (granulePos > mCodecDelay) {
		pcmSamplePosition = granulePos - mCodecDelay;
		}
		if (pcmSamplePosition > INT64_MAX / 1000000ll) {
		return INT64_MAX;
		}
		return pcmSamplePosition * 1000000ll / kOpusSampleRate;
		}