libjpeg-turbo 1.1.90 for linaro 11.08
Christian Robottom Reis
kiko at linaro.org
Mon Aug 22 13:57:31 UTC 2011
On Sun, Aug 21, 2011 at 04:31:24PM -0500, Tom Gall wrote:
> In support of the Linaro 11.08 release, the libjpeg-turbo package has
> been updated substantially from 1.1.1 to 1.1.90 which closely tracks
> the upcoming 1.2 community release. On ARM make test passes and image
> quality appears to be good. (of note to the Android WG bugs #823960
> and #826642 are not present) This new version of libjpeg-turbo is
> include in the ubuntu-desktop and alip reference images.
What actually caused the Android bugs to go away?
>  Added SIMD routines for RGB-to-grayscale color conversion, which
> significantly improves the performance of grayscale JPEG compression from an
> RGB source image.
>  Improved performance for non-x86 machines.
It would be nice if the ChangeLog identified clearly where ARM support
is being added or improved -- SIMD and non-x86 machines above leave us
wondering what actually changed. Or should the assumption be that SIMD
is always implemented for all platforms, and non-x86 is really
everything but x86?
>  All legacy VirtualGL code has been re-factored, and this has allowed
> libjpeg-turbo, in its entirety, to be re-licensed under a BSD-style license.
Do we have a continuous set of benchmarks being run for this on some of
our boards, and if not, could we get a job set up?
Christian Robottom Reis, Engineering VP
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