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j2k 0.8.1

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@jcwal1516 jcwal1516 released this 07 Aug 03:53
· 11 commits to main since this release
v0.8.1
f92646d
  • Adds release-scoped ISO/IEC 15444-4:2024 / ITU-T T.803 v3 decoder evidence.
    The CPU IUT is Profile-1 Cclass-1 compliant, Profile-1 Cclass-1HF compliant,
    and Annex G JP2 reader compliant across all 90 selected cases with zero skips
    on macOS arm64, Linux x86-64, and Windows x86-64.
  • Publishes separate CUDA and Metal adapter-IUT results for the same selected
    codestream classes. Each headline is 0/90 device-native, 48/90 hybrid, and
    42/90 CPU-routed; reports disclose parsing, Tier-1, dequantization, IDWT,
    MCT, color/output, and transfer execution per case.
  • Adds exact codestream-resolution decoding through
    decode_native_components_at_reduction and explicit Annex G normalization
    through decode_srgb8, including Gray/RGB/RGBA layouts, component mapping,
    palettes, CDEF ordering, subsampling, enumerated color spaces, and restricted
    ICC conversion.
  • Fixes Part 1 decoder conformance defects in irreversible midpoint
    reconstruction, ROI handling, packet/header parsing, progression and tile-part
    handling, component transforms, and JP2 validation without vector-specific
    exceptions or relaxed tolerances.
  • Adds deterministic Annex D/F encoder ICS matrices. The CPU matrix passes
    28/28 cases and the CUDA and Metal matrices pass 25/25 through the pinned
    T.804 OpenJPEG decoder; this is informative encoder evidence, not the formal
    decoder claim.
  • Independently verifies p0_13.j2k before harness normalization: the
    production decoder and OpenJPEG match all 257 native components exactly.
  • Promotes only benchmark-qualified fixed Auto hybrid cells after identical
    output, at least 10% median improvement, and non-overlapping Criterion 95%
    confidence intervals. Explicit CUDA and Metal requests remain strict.
  • Makes tag publication verify all three CPU reports plus the CUDA and Metal
    reports for the exact release SHA, and rotates the public API compatibility
    baseline to the published v0.8.0 release.

Evidence

T.803 conformance evidence does not establish robustness, security, adoption, or performance. CUDA and Metal results are adapter-IUT evidence and must be read with their disclosed stage routes; neither result is device-native.

Assets 13
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