{
  "about": "platform-decode §6: a grain-free wai.video.av1 base and two wai.video.int_refine layers written against its reference decode, and a stream with film grain. A case makes the base from base.i420 (the frames a decoder gave, I420, concatenated) as its decoder states: reference (libdav1d) or probe-matched at decode-equivalence, unprobed at none (staged::av1::base_from_i420); the sink is staged::StageSink with a hold bound of 16 envelopes and 1000 ms, no cost limit, a chain budget of 2^30 and a record budget of 2^20; step i (from 0) offers its envelope at i + 1 ms with no receipt verified, and expire@t expires holds at t ms. expect states the base's refusal, every step's reports (applied, held and refused units by index), and each unit's stage, producer (a file name), tier and stage hash (SHA-256 of its RGB8 buffer, null below decode-equivalence), and the clip hash.",
  "stage0_sha256": [
    "db13cc89edc0c514a0384df73bbe15ee4ae49dd9d696f8a0914025a7118abe48",
    "af4c99dcf604d88527cb5b65020d527f9707f1c4987c6e0e34bbb475bb21da45",
    "60231e5c248499ed148f0d16652f73f263bb83a5e434a046e30fd31be64bea4f",
    "3b71eef58c781c3e904c95d3656a729c4b90596c1c16d229f6837058fa00a980",
    "647fcbf6538d814d4b3cc6dc861f2fb116e26362a1b9a2bc39a362b7ba806f2c",
    "a981d61185c9136885df631d24819961a09354f07e6ec40cbcd0574a72eedc50",
    "3e21d854b9555b49bd09f94894f2527f83f5b5fce81b0bf3b9fd1348005c86c4",
    "8ee3a2e91582cd849f62ae163d69063042b4c0892905527e7504e06a68266b51"
  ],
  "cases": [
    {
      "name": "stage0",
      "about": "the base alone: every frame's RGB8 unit from its I420 samples by the JFIF integer conversion, at decode-equivalence",
      "base": "base.wai",
      "decoder": "reference",
      "steps": [],
      "expect": {
        "base_refusal": null,
        "steps": [],
        "units": [
          {
            "stage": 0,
            "producer": "base.wai",
            "tier": "decode-equivalence",
            "sha256": "db13cc89edc0c514a0384df73bbe15ee4ae49dd9d696f8a0914025a7118abe48"
          },
          {
            "stage": 0,
            "producer": "base.wai",
            "tier": "decode-equivalence",
            "sha256": "af4c99dcf604d88527cb5b65020d527f9707f1c4987c6e0e34bbb475bb21da45"
          },
          {
            "stage": 0,
            "producer": "base.wai",
            "tier": "decode-equivalence",
            "sha256": "60231e5c248499ed148f0d16652f73f263bb83a5e434a046e30fd31be64bea4f"
          },
          {
            "stage": 0,
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            "tier": "decode-equivalence",
            "sha256": "3b71eef58c781c3e904c95d3656a729c4b90596c1c16d229f6837058fa00a980"
          },
          {
            "stage": 0,
            "producer": "base.wai",
            "tier": "decode-equivalence",
            "sha256": "647fcbf6538d814d4b3cc6dc861f2fb116e26362a1b9a2bc39a362b7ba806f2c"
          },
          {
            "stage": 0,
            "producer": "base.wai",
            "tier": "decode-equivalence",
            "sha256": "a981d61185c9136885df631d24819961a09354f07e6ec40cbcd0574a72eedc50"
          },
          {
            "stage": 0,
            "producer": "base.wai",
            "tier": "decode-equivalence",
            "sha256": "3e21d854b9555b49bd09f94894f2527f83f5b5fce81b0bf3b9fd1348005c86c4"
          },
          {
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            "tier": "decode-equivalence",
            "sha256": "8ee3a2e91582cd849f62ae163d69063042b4c0892905527e7504e06a68266b51"
          }
        ],
        "clip_sha256": "50c5e02132f649634fa180bd44e685445e30c28dbe796a7ed3803c1c82a59f30"
      }
    },
    {
      "name": "one-layer",
      "about": "layer 1 over a platform decode whose probe matched: every frame at stage 1",
      "base": "base.wai",
      "decoder": "probe-matched",
      "steps": [
        "layer1.wai"
      ],
      "expect": {
        "base_refusal": null,
        "steps": [
          {
            "step": "layer1.wai",
            "reports": [
              {
                "envelope": "layer1.wai",
                "reason": null,
                "held_for_base": false,
                "applied": [
                  0,
                  1,
                  2,
                  3,
                  4,
                  5,
                  6,
                  7
                ],
                "held": [],
                "refused": []
              }
            ]
          }
        ],
        "units": [
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            "producer": "layer1.wai",
            "tier": "decode-equivalence",
            "sha256": "cedb1c476e73b35923c3220b0c927935fe0777ede72d01f37fd9175a09a3fa04"
          },
          {
            "stage": 1,
            "producer": "layer1.wai",
            "tier": "decode-equivalence",
            "sha256": "0fc2ef0ef7c9269cc14c3a742ece94942834709fcf75fc523fac5dc7d33e9e57"
          },
          {
            "stage": 1,
            "producer": "layer1.wai",
            "tier": "decode-equivalence",
            "sha256": "6b31fe73e0075b68899cae45c356e68322ba7f1910da4e0c2ad262fba9e718d5"
          },
          {
            "stage": 1,
            "producer": "layer1.wai",
            "tier": "decode-equivalence",
            "sha256": "d43e71a14860bb2abeaef0cd03d4e3f097ebb60444477414e8794c6fd52a9310"
          },
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            "producer": "layer1.wai",
            "tier": "decode-equivalence",
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          },
          {
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            "producer": "layer1.wai",
            "tier": "decode-equivalence",
            "sha256": "a386c3327ab0054a3da2b878007dd64eec822481cd30c42f0f6beb6ca2889017"
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          {
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            "producer": "layer1.wai",
            "tier": "decode-equivalence",
            "sha256": "40750eccbd8487f1fd284ac11c553d493a572c2a892cfc1ae14d8d9c26044fa3"
          },
          {
            "stage": 1,
            "producer": "layer1.wai",
            "tier": "decode-equivalence",
            "sha256": "d1975fb20b0aceb916919905d658bd8da77d392ea7b1adbee18c13530b98f72c"
          }
        ],
        "clip_sha256": "0f93122aa78dc26b5b65d32b87a0296296bca9abd0f198e1b0be59c1cf726e22"
      }
    },
    {
      "name": "two-layers",
      "about": "layers 1 and 2 over a platform decode whose probe matched: every frame at stage 2, the source clip",
      "base": "base.wai",
      "decoder": "probe-matched",
      "steps": [
        "layer1.wai",
        "layer2.wai"
      ],
      "expect": {
        "base_refusal": null,
        "steps": [
          {
            "step": "layer1.wai",
            "reports": [
              {
                "envelope": "layer1.wai",
                "reason": null,
                "held_for_base": false,
                "applied": [
                  0,
                  1,
                  2,
                  3,
                  4,
                  5,
                  6,
                  7
                ],
                "held": [],
                "refused": []
              }
            ]
          },
          {
            "step": "layer2.wai",
            "reports": [
              {
                "envelope": "layer2.wai",
                "reason": null,
                "held_for_base": false,
                "applied": [
                  0,
                  1,
                  2,
                  3,
                  4,
                  5,
                  6,
                  7
                ],
                "held": [],
                "refused": []
              }
            ]
          }
        ],
        "units": [
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            "stage": 2,
            "producer": "layer2.wai",
            "tier": "decode-equivalence",
            "sha256": "ee98c2236f7b3f7ad868bbadade8304c3c5953ed77e9012d3908a5aa7bf981ad"
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            "producer": "layer2.wai",
            "tier": "decode-equivalence",
            "sha256": "453f6c11ee02e3eef1bc1415c750ac08bcdf30554b038acf6d079b9f35ab7e9b"
          },
          {
            "stage": 2,
            "producer": "layer2.wai",
            "tier": "decode-equivalence",
            "sha256": "71cc2df86257d1431ad170977740c20edfacf612a786662031798279e8533bf5"
          },
          {
            "stage": 2,
            "producer": "layer2.wai",
            "tier": "decode-equivalence",
            "sha256": "8280f97fb5cc5a6693a578d99faad4013fd0fc1dd5c7df7b6b7208048148f338"
          },
          {
            "stage": 2,
            "producer": "layer2.wai",
            "tier": "decode-equivalence",
            "sha256": "2f05af50b2f88787d58d7f85e9067a73b5bef8931817ff25f11c4dedf1b23387"
          },
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            "tier": "decode-equivalence",
            "sha256": "a4c3b1580a240862ac3b4e9f89082e376b0b9e2c18fe00550c0846de081289ee"
          },
          {
            "stage": 2,
            "producer": "layer2.wai",
            "tier": "decode-equivalence",
            "sha256": "aa915623294df5d7eb3edd22bb9335f6bfbd8d1ffbee4b418524f45c1cae6a72"
          },
          {
            "stage": 2,
            "producer": "layer2.wai",
            "tier": "decode-equivalence",
            "sha256": "13ff9deb7fcfdafb17a7a651c66903ceac9a99a6d2dcf7987a6b379cc50f140d"
          }
        ],
        "clip_sha256": "0fc5916472f2367797a0b74eb878c45cfd762c74f84cb09e589444461f04f129"
      }
    },
    {
      "name": "two-layers-reference",
      "about": "the same over the reference decode: the same stage hashes",
      "base": "base.wai",
      "decoder": "reference",
      "steps": [
        "layer1.wai",
        "layer2.wai"
      ],
      "expect": {
        "base_refusal": null,
        "steps": [
          {
            "step": "layer1.wai",
            "reports": [
              {
                "envelope": "layer1.wai",
                "reason": null,
                "held_for_base": false,
                "applied": [
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                  1,
                  2,
                  3,
                  4,
                  5,
                  6,
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                ],
                "held": [],
                "refused": []
              }
            ]
          },
          {
            "step": "layer2.wai",
            "reports": [
              {
                "envelope": "layer2.wai",
                "reason": null,
                "held_for_base": false,
                "applied": [
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                  4,
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                ],
                "held": [],
                "refused": []
              }
            ]
          }
        ],
        "units": [
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            "producer": "layer2.wai",
            "tier": "decode-equivalence",
            "sha256": "ee98c2236f7b3f7ad868bbadade8304c3c5953ed77e9012d3908a5aa7bf981ad"
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            "sha256": "453f6c11ee02e3eef1bc1415c750ac08bcdf30554b038acf6d079b9f35ab7e9b"
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            "sha256": "71cc2df86257d1431ad170977740c20edfacf612a786662031798279e8533bf5"
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            "sha256": "8280f97fb5cc5a6693a578d99faad4013fd0fc1dd5c7df7b6b7208048148f338"
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            "stage": 2,
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          }
        ],
        "clip_sha256": "0fc5916472f2367797a0b74eb878c45cfd762c74f84cb09e589444461f04f129"
      }
    },
    {
      "name": "two-layers-out-of-order",
      "about": "layer 2 before layer 1: held for every frame (layer-gap pending), then applied with layer 1 as one batch",
      "base": "base.wai",
      "decoder": "probe-matched",
      "steps": [
        "layer2.wai",
        "layer1.wai"
      ],
      "expect": {
        "base_refusal": null,
        "steps": [
          {
            "step": "layer2.wai",
            "reports": [
              {
                "envelope": "layer2.wai",
                "reason": null,
                "held_for_base": false,
                "applied": [],
                "held": [
                  0,
                  1,
                  2,
                  3,
                  4,
                  5,
                  6,
                  7
                ],
                "refused": []
              }
            ]
          },
          {
            "step": "layer1.wai",
            "reports": [
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                "reason": null,
                "held_for_base": false,
                "applied": [
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                  2,
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                  6,
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                ],
                "held": [],
                "refused": []
              },
              {
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                "reason": null,
                "held_for_base": false,
                "applied": [
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                ],
                "held": [],
                "refused": []
              }
            ]
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            "sha256": "ee98c2236f7b3f7ad868bbadade8304c3c5953ed77e9012d3908a5aa7bf981ad"
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        ],
        "clip_sha256": "0fc5916472f2367797a0b74eb878c45cfd762c74f84cb09e589444461f04f129"
      }
    },
    {
      "name": "unprobed",
      "about": "layer 1 over a platform decode with no probe run: the base step holds no tier, and SPEC §5's Base admission refuses the layer (base-not-admitted)",
      "base": "base.wai",
      "decoder": "unprobed",
      "steps": [
        "layer1.wai"
      ],
      "expect": {
        "base_refusal": null,
        "steps": [
          {
            "step": "layer1.wai",
            "reports": [
              {
                "envelope": "layer1.wai",
                "reason": "base-not-admitted",
                "held_for_base": false,
                "applied": [],
                "held": [],
                "refused": []
              }
            ]
          }
        ],
        "units": [
          {
            "stage": 0,
            "producer": "base.wai",
            "tier": "none",
            "sha256": null
          },
          {
            "stage": 0,
            "producer": "base.wai",
            "tier": "none",
            "sha256": null
          },
          {
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          },
          {
            "stage": 0,
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            "sha256": null
          },
          {
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          },
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          },
          {
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            "sha256": null
          },
          {
            "stage": 0,
            "producer": "base.wai",
            "tier": "none",
            "sha256": null
          }
        ],
        "clip_sha256": null
      }
    },
    {
      "name": "film-grain",
      "about": "a stream with film_grain_params_present 1: refused as a base (av1_film_grain) before it is decoded, so the layer naming it is held for a base and discarded at the hold bound (base-absent)",
      "base": "base-grain.wai",
      "decoder": "reference",
      "steps": [
        "layer1-over-grain.wai",
        "expire@5000"
      ],
      "expect": {
        "base_refusal": "av1_film_grain",
        "steps": [
          {
            "step": "layer1-over-grain.wai",
            "reports": [
              {
                "envelope": "layer1-over-grain.wai",
                "reason": null,
                "held_for_base": true,
                "applied": [],
                "held": [],
                "refused": []
              }
            ]
          },
          {
            "step": "expire@5000",
            "reports": [
              {
                "envelope": "layer1-over-grain.wai",
                "reason": "base-absent",
                "held_for_base": false,
                "applied": [],
                "held": [],
                "refused": []
              }
            ]
          }
        ],
        "units": null,
        "clip_sha256": null
      }
    }
  ]
}