Any Android specific modifications to upstream libjpeg-turbo (the version
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specified in METADATA) should be listed here:
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(1) jconfig.h and jconfigint.h
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These are included upstream as jconfig.h.in and jconfigint.h.in.
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We have the option autogenerate these platform/version specific files (using
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the libjpeg-turbo build system) or to manually create them.
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Autogenerating these files on linux gets us most of the way, but we've needed
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to add some multi-platform flexibility to the INLINE and SIZEOF_SIZE_T macros.
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(2) simd/arm64/jsimd_neon.S
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To support execute-only memory layouts, constants in handwritten assembly have
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been moved into a dedicated rodata section.
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There's a pull request upstream for this as well. If that's accepted, this
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can be removed as an Android-specific modification.
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https://github.com/libjpeg-turbo/libjpeg-turbo/pull/318
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(3) Cherry-pick of 2a9e3b and 15902850 from upstream
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These fix a bug in TurboJPEG's handling of gigapixel images.
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