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Commit 7e6af732 authored by Dan Austin's avatar Dan Austin Committed by android-build-merger
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Merge "Fix benign integer overflow conditions for VSYNC add and removal." 

am: 34efca16

* commit '34efca16':
  Fix benign integer overflow conditions for VSYNC add and removal.
parents 2872879d 34efca16

media/libstagefright/VideoFrameScheduler.cpp

+4 −2
Original line number Diff line number Diff line
@@ -460,6 +460,7 @@ nsecs_t VideoFrameScheduler::schedule(nsecs_t renderTime) { 
                mTimeCorrection -= mVsyncPeriod / 2;

                renderTime -= mVsyncPeriod / 2;

                nextVsyncTime -= mVsyncPeriod;

                if (vsyncsForLastFrame > 0)

                    --vsyncsForLastFrame;

            } else if (mTimeCorrection < -correctionLimit &&

                    (vsyncsPerFrameAreNearlyConstant || vsyncsForLastFrame == minVsyncsPerFrame)) {
@@ -467,6 +468,7 @@ nsecs_t VideoFrameScheduler::schedule(nsecs_t renderTime) { 
                mTimeCorrection += mVsyncPeriod / 2;

                renderTime += mVsyncPeriod / 2;

                nextVsyncTime += mVsyncPeriod;

                if (vsyncsForLastFrame < ULONG_MAX)

                    ++vsyncsForLastFrame;

            }

            ATRACE_INT("FRAME_VSYNCS", vsyncsForLastFrame);