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Port CPU decode_jpeg to stable ABI. - #9554

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adabeyta/decode-jpeg-stable
Jul 14, 2026
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Port CPU decode_jpeg to stable ABI.#9554
NicolasHug merged 1 commit into
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adabeyta/decode-jpeg-stable

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@adabeyta

@adabeyta adabeyta commented Jul 14, 2026

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Ports CPU jpeg decoder to stable ABI.

Notes:

  • exif.h becomes stable-only, decode_jpeg was the last legacy consumer of exif.h.
  • common_jpeg.cpp stops dual-compiling, with the decoder migrated it builds only into image_stable.
  • libjpeg leaves the legacy extension no unstable TU uses libjpeg anymore, so its detection/linking now applies only to image_stable.

Stable-ABI audit (torch-abi-audit)

Ran torch-abi-audit against the built torchvision package. **image_stable.so audits as STABLE — 73 stable-shim symbols, 0 unstable. ** The legacy image.so drops 37 → 34 unstable.

    Package: torchvision
      Torch ABI:   UNSTABLE
      CPython ABI: n/a
      Bundled libs: 4
      -- bundled libs --
        [UNSTABLE] [not-abi3        ] _C.so            (stable_shim=0,  unstable=110)
        [STABLE  ] [not-abi3        ] _C_stable.so     (stable_shim=67, unstable=0)
        [UNSTABLE] [uses-private-api] image.so         (stable_shim=0,  unstable=34)
        [STABLE  ] [not-abi3        ] image_stable.so  (stable_shim=73, unstable=0)

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pytorch-bot Bot commented Jul 14, 2026 •
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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/vision/9554

Note: Links to docs will display an error until the docs builds have been completed.

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@meta-cla meta-cla Bot added the cla signed label Jul 14, 2026
@adabeyta
adabeyta requested a review from NicolasHug July 14, 2026 15:53
@adabeyta adabeyta changed the title [Test] Port CPU decode_jpeg to stable ABI. Port CPU decode_jpeg to stable ABI. Jul 14, 2026
@adabeyta
adabeyta marked this pull request as ready for review July 14, 2026 15:54
NicolasHug
NicolasHug approved these changes Jul 14, 2026
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Thanks @adabeyta !

@NicolasHug
NicolasHug merged commit 864d526 into main Jul 14, 2026
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@NicolasHug
NicolasHug deleted the adabeyta/decode-jpeg-stable branch July 14, 2026 16:23
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