ac10a748f5
The mandatory floor (PNG, FLAC, zstd) has no video capability, so a bare envelope carrying video had no codec every video sink holds, while packaging §7 already gives every packaged video piece an AV1 floor rendition. A sink that presents the video media class now MUST decode wai.video.av1. The floor is scoped to the class: the mandatory floor holds every sink, audio players, text readers and devices that show no picture among them, and none of those can use a video decoder. - SPEC §1, §5 (Video floor) and §7: the rule, what presenting a class means, and the conformance consequence. - SPEC §7 Digests: RGB8 is defined in place, and a standard codec whose standard fixes its samples in another layout and no conversion to RGB8 (AV1, AVIF) is digested in that layout, I420 for 8-bit 4:2:0 AV1, as the grain-free AV1 corpus already did. - Registry: wai.video.av1 joins the set video-floor (codecs::video_floor); the schema's set enumeration gains the value. - floor-conformance/: the decoder suite, a case for each mandatory-floor capability and the video-floor case (a grain-free AV1 stream, each I420 frame's digest and the clip's), with the class rule as sink rows. tests/floor_conformance.rs runs it in the floor build, and through libdav1d in the codec-wrappers job; floor_verify.py, the second implementation, decodes PNG and FLAC itself, checks the class rule against the registry and catches every planted fault. Co-Authored-By: Claude Opus 5.5 <[email protected]>
349 lines
9.1 KiB
JSON
349 lines
9.1 KiB
JSON
{
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"$schema": "https://json-schema.org/draft/2020-12/schema",
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"$id": "https://git.transaction.science/Transaction-Science/open-standards/src/branch/main/wai/registry/capabilities.schema.json",
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"title": "WAI capability registry",
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"description": "Every string SPEC §5 registers, generated by `wai registry export` from the reference implementation's registry (wai-rs/src/codecs/registry.rs). REGISTRY.md states the policy.",
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"type": "object",
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"additionalProperties": false,
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"required": [
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"schema",
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"capabilities",
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"identifiers",
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"unregistered_labels",
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"wire_identifiers"
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],
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"properties": {
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"schema": {
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"type": "string"
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},
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"capabilities": {
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"type": "array",
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"items": {
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"type": "object",
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"additionalProperties": false,
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"required": [
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"capability",
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"kind",
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"status",
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"media",
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"role",
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"tier",
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"licence",
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"replicate",
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"sets",
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"spec_section",
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"edition",
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"registered"
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],
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"properties": {
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"capability": {
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"type": "string",
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"pattern": "^wai(\\.[a-z0-9_]+)+$"
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},
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"kind": {
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"enum": [
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"payload",
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"companion",
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"refinement",
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"derivation",
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"record"
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]
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},
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"status": {
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"enum": [
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"registered",
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"candidate"
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]
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},
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"media": {
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"enum": [
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"image",
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"audio",
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"video",
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"text",
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"volumetric",
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"haptic",
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"metadata",
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"interactive",
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"binary",
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null
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]
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},
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"role": {
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"enum": [
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"standalone",
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"companion",
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"enhancement",
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"refinement",
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null
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]
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},
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"tier": {
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"enum": [
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"lossless",
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"lossy",
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"perceptual",
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null
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]
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},
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"licence": {
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"enum": [
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"royalty-free",
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"patent-pool",
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"proprietary",
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"non-commercial",
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null
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]
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},
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"replicate": {
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"enum": [
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"standard-defined",
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"standard-tolerance",
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"standard-unclassified",
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"neural-int-exact",
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"neural-entropy-exact",
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"generative-exact",
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"neural-float",
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"behavioral",
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null
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]
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},
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"sets": {
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"type": "array",
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"uniqueItems": true,
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"items": {
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"enum": [
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"floor",
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"recommended",
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"video-floor"
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]
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}
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},
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"spec_section": {
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"type": "string"
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},
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"edition": {
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"type": [
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"string",
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"null"
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],
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"description": "The edition the registration names; null means the edition of the named standard current on the date in `registered` (SPEC §8)."
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},
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"registered": {
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"type": "string",
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"pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}$",
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"description": "The date of the first commit of this repository that registers the string; the specification entered the repository on 2026-06-12."
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},
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"ops": {
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"type": "object",
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"description": "The integer operator set the capability decodes through (extensions/integer-operators.md §11). Absent for a capability that does not. A capability whose decode runs no graph, only stage operators (§13.5), has no profile, subset or lowering.",
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"additionalProperties": false,
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"required": [
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"set"
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],
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"dependentRequired": {
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"profile": [
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"subset",
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"lowering"
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],
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"subset": [
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"profile",
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"lowering"
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],
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"lowering": [
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"profile",
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"subset"
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],
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"role_profiles": [
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"profile"
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]
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},
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"anyOf": [
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{
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"required": [
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"lowering"
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]
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},
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{
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"required": [
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"stage"
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]
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}
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],
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"properties": {
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"set": {
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"const": "wai-ops/1"
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},
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"profile": {
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"enum": [
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"acc32",
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"acc64"
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]
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},
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"subset": {
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"enum": [
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"full",
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"npu"
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]
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},
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"lowering": {
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"type": "string"
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},
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"role_profiles": {
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"type": "object",
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"description": "Roles of the lowering whose graphs every conforming set holds to a stronger profile than `profile`, each with that profile (extensions/integer-operators.md §11).",
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"minProperties": 1,
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"additionalProperties": {
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"enum": [
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"acc32",
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"acc64"
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]
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}
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},
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"stage": {
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"type": "object",
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"additionalProperties": false,
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"properties": {
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"rans64": {
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"type": "object",
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"additionalProperties": false,
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"required": [
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"table",
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"escape",
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"end"
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],
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"properties": {
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"table": {
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"enum": [
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"t4097",
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"t2"
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]
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},
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"escape": {
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"enum": [
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"lenient",
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"strict"
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]
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},
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"end": {
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"enum": [
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"canonical",
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"final_only"
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]
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}
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}
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},
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"bucket": {
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"enum": [
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"ceil",
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"floor"
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]
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}
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}
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}
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}
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}
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}
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}
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},
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"identifiers": {
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"type": "array",
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"items": {
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"type": "object",
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"additionalProperties": false,
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"required": [
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"identifier",
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"spec_section",
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"meaning"
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],
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"properties": {
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"identifier": {
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"type": "string",
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"pattern": "^wai(\\.[a-z0-9_]+)+$"
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},
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"spec_section": {
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"type": "string"
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},
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"meaning": {
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"type": "string"
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}
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}
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}
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},
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"unregistered_labels": {
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"type": "array",
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"items": {
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"type": "object",
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"additionalProperties": false,
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"required": [
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"label",
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"reason"
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],
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"properties": {
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"label": {
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"type": "string",
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"pattern": "^wai(\\.[a-z0-9_]+)+$"
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},
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"reason": {
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"type": "string"
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}
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}
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}
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},
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"wire_identifiers": {
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"type": "array",
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"items": {
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"type": "object",
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"additionalProperties": false,
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"required": [
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"name",
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"kind",
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"document",
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"section",
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"status"
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],
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"properties": {
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"name": {
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"type": "string"
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},
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"kind": {
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"enum": [
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"media-type",
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"codecs-prefix",
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"fourcc",
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"magic",
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"data-id",
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"scheme",
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"path",
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"well-known",
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"playlist-tag",
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"playlist-attribute",
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"document-kind",
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"catalog",
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"setup-option",
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"http-header",
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"frame-metadata",
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"gltf-extension",
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"telemetry-key",
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"dap-report-extension"
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]
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},
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"document": {
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"type": "string"
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},
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"section": {
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"type": "string",
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"pattern": "^(§[0-9]+(\\.[0-9]+)*|Appendix [A-Z])$"
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},
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"status": {
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"enum": [
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"defined",
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"provisional",
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"proposed"
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]
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}
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}
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}
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}
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}
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}
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