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zjlyou / openjpeg

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SIMD Acceleration for Forward DWT #498

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
Reverse DWT has it, why not forward DWT?

Also, it would be nice to support at least AVX, which has been around
since Intel Sandy Bridge.

Original issue reported on code.google.com by boxe...@gmail.com on 31 May 2015 at 7:03

GoogleCodeExporter commented 8 years ago 
Hi Aaron,

I guess this should be linked with issue 450 to be fully usable (AVX).
For now, only custom build can benefit from SIMD implementations with some "by 
default" exceptions:
up to SSE2 on x64 (I don't think it's enabled on windows in cmake, need to 
check for compiler support)
up to SSE3 on MacOS X Intel x86
up to SSSE3 on MacOS X Intel x64

Original comment by m.darb...@gmail.com on 3 Jun 2015 at 9:11

GoogleCodeExporter commented 8 years ago 
Hi Matthieu,

Thanks for the link to issue 450. If you are interested in pursuing this, I can 
help. I do have access to a machine with AVX, but I don't have a large amount 
of time to spend.

Original comment by boxe...@gmail.com on 4 Jun 2015 at 2:47