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Commit a3f13550 authored by Melody Hsu's avatar Melody Hsu
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Recover from buffer stuffing for canned animations

Buffer stuffing occurs when SurfaceFlinger misses a frame, but the
client continues to produce buffers at the same rate, causing a
greater risk for jank to occur. Recovery is achieved for canned
animations by adjusting the animation timeline on the client side so
that SurfaceFlinger is no longer behind.

Choreographer adds a negative offset to each frame when buffer
stuffing is detected to effectively adjust the animation timeline
after an intentional frame delay.

Bug: b/294922229
Test: presubmit, manually check perfetto traces
Flag: android.view.flags.buffer_stuffing_recovery
Change-Id: Ic48208252c899a97cd72177fedaa2c2788028338
parent 2f6d590b
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