Great, thanks. I hve been trying to get a friend of mine to do the
gcc assembly code, but it looks like I can stop begging him for it
now :)
Thanks,
----- Original Message -----
From: "Mathew Hendry" <[EMAIL PROTECTED]>
To: "MP3 Encoder (E-mail)" <[EMAIL PROTECTED]>
Sent: Wednesday, February 09, 2000 6:30 AM
Subject: [MP3 ENCODER] quantize_xrpow - gcc asm
> Hi all,
>
> Attached is an update to quantize-pvt.c, with full asm implementations of
> quantize_xrpow and quantize_xrpow_ISO for gcc/i386. They're basically Acy
> Stapp's MSVC code, converted to gcc's arcane inline assembler syntax. On
> this PIII/gcc-2.95 system, I get an overall speed increase of up to 10%,
> most noticable in "quantization-heavy" modes such as high quality VBR.
>
> In both the MSVC and gcc versions, I've also changed the "loop"
instruction
> in quantize_xrpow_ISO to a dec/jnz pair, which I believe is faster on all
> Pentiums.
>
> Problems? Suggestions for further improvements?
>
> -- Mat.
>
>
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