Re: [MP3 ENCODER] Speeding up window_subband

[Takehiro Tominaga]

Hi, all,

>>>>> "T" == Takehiro Tominaga <[EMAIL PROTECTED]> writes:

    T> Hi All, I've merged Naoki's new IDCT code for filter subband
    T> into my tree,

Sorry, some trouble happen and I can't have a time...(even it is holiday...)

I put a tarball of my tree on my web.
http://www.isoternet.org/~tominaga/lame-beta/lame-0501.tar.bz2

you can choose from 3 mdct routines changing Makefile.

1 C code                                newmdct.c
2 Naoki's code(not optimizing)          newmdct-naoki.c
3 partly ASMed version(for PentiumPro)  newmdct + i386/sbband.nas
  (default is 3)

>>>>> "N" == Naoki Shibata <[EMAIL PROTECTED]> writes:

    N>   The code obviously needs optimization. Since I couldn't
    N> understand how current window_subband works, I chose not to
    N> optimize the code.  Since almost all MP3 decoders use DCT
    N> version of the algorithm in subband synthesis, it should become
    N> faster than naive one, perhaps. :)

have a good hack.
--- 
Takehiro TOMINAGA // may the source be with you!
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