)]}'
{
  "commit": "555b3aae440dc1a23d11723c556d95b172cb259d",
  "tree": "d84e88be7e7fd08bf983156f2f58d725e947cd8f",
  "parents": [
    "293bdf27b073f5b9c01be8e9e2592793eaf2dbb3"
  ],
  "author": {
    "name": "Marco Paniconi",
    "email": "marpan@google.com",
    "time": "Fri Mar 03 09:40:28 2023 -0800"
  },
  "committer": {
    "name": "Marco Paniconi",
    "email": "marpan@google.com",
    "time": "Mon Mar 06 23:27:49 2023 +0000"
  },
  "message": "rtc: Color sensitivity for altref in nonrd\n\nThis is reland of:\nhttps://aomedia-review.googlesource.com/c/aom/+/171201\nwith some adjustment of thresholds.\n\nAdd superblock-level color sensitivity flag for altref,\nsimilar to golden, and use this in the nonrd pickmode.\nIf this color flag is set for altref: skip altref as\nsingle reference mode (in get_ref_frame_use_mask(), as\nis done for golden), and skip the compound mode (and add\nthe same there condition for golden reference).\n\nSkip logic is targeted to small source variance (flat areas)\nin y channel, as that is where the wrong color artifact\nlikely occurs. And thresholds for setting golden/alt\ncolor sensitivity are based on resolution and content mode.\n\nThis reduces the occurrence of wrong color blocks, observed\nin the issue below. Though the issue/artifact can still arise,\nthis change is fairly conservative to avoid regression on\nthe test sets.\n\nStats changed: avg/ovr/ssim, IC (speedup)\nrtc_derf:\nspeed 7:  -0.022/-0.032/0.022,  -0.061\nspeed 8:  -0.157/-0.185/-0.140, -0.169\nspeed 9:   0.119/0.081/0.141,    0.014\nspeed 10: -0.091/-0.105/-0.132, -0.034\n\nrtc:\nspeed 7:  0.227/0.196/0.354,  0.146\nspeed 8:  0.351/0.330/0.568,  0.219\nspeed 9:  0.126/0.138/0.433, -0.276\nspeed 10: 0.120/0.138/0.381, -0.389\n\nrtc_screen:\nspeed 10: -0.371/-0.198/-0.408, 0.033\n\nrtc-1080p:\nspeed 7:  -1.091/-0.835/-0.023, -0.263\nspeed 10: -0.382/-0.362/-0.193, -0.554\n\nBug: aomedia:3370\nChange-Id: I2a3a2942b9ae7f27a66e66bd078a67a8f4cd3ee6\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "3c947e5b0ed700d6bf393722eed7fcc8f8b12bd6",
      "old_mode": 33188,
      "old_path": "av1/encoder/block.h",
      "new_id": "79c1db0f9f8806c7b183b82c040d2d2d7870f2cf",
      "new_mode": 33188,
      "new_path": "av1/encoder/block.h"
    },
    {
      "type": "modify",
      "old_id": "ab97754df67550db32224a37a7ffee49fb636edc",
      "old_mode": 33188,
      "old_path": "av1/encoder/encodeframe.c",
      "new_id": "de197e685ca4e1ea9432ecd9e56d5c190883b180",
      "new_mode": 33188,
      "new_path": "av1/encoder/encodeframe.c"
    },
    {
      "type": "modify",
      "old_id": "2ca3db7d9cb4cbcbd9418db8a765edb25d5c4d55",
      "old_mode": 33188,
      "old_path": "av1/encoder/nonrd_pickmode.c",
      "new_id": "59d732972e0842303bf7fb1c42ae14a34b19a358",
      "new_mode": 33188,
      "new_path": "av1/encoder/nonrd_pickmode.c"
    },
    {
      "type": "modify",
      "old_id": "afcf2f38fc87f99f9213e614b324935289070986",
      "old_mode": 33188,
      "old_path": "av1/encoder/var_based_part.c",
      "new_id": "8a5ee18398c8027a69fde191f5743d1b4c5a53cb",
      "new_mode": 33188,
      "new_path": "av1/encoder/var_based_part.c"
    }
  ]
}