Re: Not nessesary Int types
"Aitor Garay" <[email protected]> Tue, 22 Apr 2003 10:12:26 +0200
| Newsgroups | gmane.comp.video.h264.devel |
|---|---|
| Message-ID | <001601c308a6$e9916880$bcb31fac@HAJC0062> |
16 bit is enough for transformation, but not for quantization, where 32 bit are need. In the
code native ints are used for performance of the C code ( in most of the architectures is better
to use the native bit size rather that a shorter one), but of course one should revert to 16 bit
when using MMX/Altivec.
/AITOR
----- Original Message -----
From: "monsti" <[email protected]>
To: <[email protected]>
Sent: Thursday, April 17, 2003 9:24 PM
Subject: [Hdot264-devel] Not nessesary Int types
> Hello
>
> When I;m finish converting ForwardTransform to MMX I downloaded
> new CVS and.... #$%#%#$%. The MMX'like Bytes was replaced by
> Int's. This is complicating turn function to MMX (In thes case it's
> impossible to write faster function as C version ). I have one
> BIG question: Maybe short is enought????
>
> Best Regards
> Monsti
>
>
>
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