tree 59118d5e05de9a28fcc4cb4fc1c2d9eb2f133dc2
parent 460e63ffff8574384dd8309f5b0839bfc940f529
author Changyeon Jo <changyeon@google.com> 1590971143 -0700
committer Changyeon Jo <changyeon@google.com> 1590972486 -0700

Calcuates and reports frame buffer latencies

This change implements logics to calculate multiple frame buffer
latencies and reports them to statds and the users.  For example, below
example shows LSHAL status dump with frame buffer latencies.

$ adb shell lshal debug \
    android.hardware.automotive.evs@1.1::IEvsEnumerator/default \
    --dump camera all --collected

/dev/video1
    Number of collections: 1
    Collection interval: 10secs
        Time Collected: @1560033ms
        Frames Received: 136
        Frames Returned: 135
        Frames Ignored : 0
        Frames Skipped To Sync: 0
        Frames First Roundtrip: 1
        Frames Peak Roundtrip: 94
        Frames Average Roundtrip: 69.133333
        Peak Number of Clients: 1

Fix: 156131016
Test: Run above example
Change-Id: I77faf15fce99207189b95484f3c4a0d334501cdc