[Webkit-unassigned] [Bug 74286] [Chromium] Use decoding swizzle only on libjpeg-turbo 1.1.90+

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=74286


Peter Kasting <pkasting at google.com> changed:

           What    |Removed                     |Added
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                 CC|                            |pkasting at google.com




--- Comment #2 from Peter Kasting <pkasting at google.com>  2011-12-12 12:46:20 PST ---
(In reply to comment #1)
> Unfortunately, the decoding swizzle code (introduced by WebKit r101286 <http://trac.webkit.org/changeset/101286>) works only on libjpeg-turbo 1.1.90 or later. Is it possible to avoid using your swizzle code when we build Chromium with a USE_SYSTEM_JPEG macro, i.e. OS(CHROMIUM) && defined(USE_SYSTEM_JPEG)?

Is there any way to query the libjpeg-turbo version, either via macros, or in some sort of package configure script that can then set the appropriate Chrome build options?

I kind of dislike turning this off for all "use system libraries" cases because then even systems with more recent libraries miss out on the optimization.

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