)]}'
{
  "commit": "efc3a38d81db2ec422035b221c0e90ec376ac8df",
  "tree": "5a3549d5b315a20da1a262d10337b4d1e182cc00",
  "parents": [
    "ed7618d369e9f5ba4b75da6a79a4284b884b3efd"
  ],
  "author": {
    "name": "Jordan Bayles",
    "email": "jophba@chromium.org",
    "time": "Fri Oct 03 23:59:17 2025"
  },
  "committer": {
    "name": "Jordan Bayles",
    "email": "jophba@chromium.org",
    "time": "Mon Oct 06 22:30:52 2025"
  },
  "message": "[Cast] Refactor ClockOffsetEstimator to use a Kalman filter\n\nThis patch significantly refactors the ClockOffsetEstimator to improve\nthe accuracy and stability of its network latency and clock offset\nestimations. The previous implementation used a simple weighted moving\naverage, which was susceptible to jitter and slow to adapt to changing\nnetwork conditions.\n\nThe core of this change is the introduction of a 1D Kalman filter.\nThis allows the estimator to:\n- More effectively smooth out network jitter, providing a more stable\n  latency estimate.\n- Converge more quickly and accurately to the true latency and offset,\n  even in the presence of noise.\n- Better track clock drift over time.\n\nTo validate this new design, the unit test suite for the\nClockOffsetEstimator has been greatly expanded to cover a wide range\nof realistic and challenging network scenarios, including:\n- High network jitter\n- Continuous clock drift\n- Bursty packet loss\n- Sudden, large latency spikes\n- A mix of audio and video media streams\n\nAdditionally, a new general-purpose Gmock matcher, `EqualsDuration`,\nhas been added to `testing/util` to provide more readable error\nmessages for std::chrono::duration types in unit tests.\n\nBug: b:448199360\n\n\nMerge branch \u0027refactor-event\u0027 into clock_offset_estimator_refactor\n\n\nWIP refactor\n\nChange-Id: I7a3df074a7e421b051191dcbc9503a2b31dd6fea\nReviewed-on: https://chromium-review.googlesource.com/c/openscreen/+/7007555\nReviewed-by: Muyao Xu \u003cmuyaoxu@google.com\u003e\nCommit-Queue: Jordan Bayles \u003cjophba@chromium.org\u003e\n",
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