DOS ain't dead - DJGPP libmpeg2 0.5 ? Libogg ?

DJGPP libmpeg2 0.5 ? Libogg ? (Developers)

posted by Rugxulo , Usono, 15.02.2009, 21:29

> > I haven't tested the GCC 4.1.2 one as the P4 one and the first pentium
> and
> > the 0.41 was always the same :-|
>
> So my work was for nothing. :-(
>
> > I guess that we have to wait tests from some one else with a slower
> > computer.
>
> The sample MPEG file plays smooth in VMware Player 1.x running on my
> Pentium M at 600 MHz only.

DJGPP ports by default use -mtune=pentium , so you never have to explicitly say that (although Ubuntu, for instance, uses -mtune=generic which is the same as i686). FFK is running a Pentium D (P4 Prescott-based w/o x86-64?) cpu, right? -mtune=prescott There's quite a difference between original 586 and 686 and P4. It may be the low bandwidth of SSE (which increased on later chips). Then again, I swear GCC is heavily 686-oriented these days, so maybe that's why.

Or it could be a regression, so trying GCC 3.4.4 might help, who knows. Even -O3 (or -O2 if you already tried -O3) might help due to cache thrashing. Also try CWSDPR0 (or HDPMI32 or CWSDPMI6) instead of default CWSDPMI, if possible.

Besides, the eye can only detect 24fps or so (right?), so anything higher won't matter.

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Complete thread:

DJGPP libmpeg2 0.5 ? Libogg ? - FFK, 03.02.2009, 21:48 (Developers)
- DJGPP libmpeg2 0.5 ? Libogg ? - rr, 14.02.2009, 21:53
  - DJGPP libmpeg2 0.5 ? Libogg ? - FFK, 14.02.2009, 22:01
    - DJGPP libmpeg2 0.5 ? Libogg ? - rr, 14.02.2009, 22:12
      - DJGPP libmpeg2 0.5 ? Libogg ? - FFK, 14.02.2009, 22:17
        DJGPP libmpeg2 0.5 ? Libogg ? - Rugxulo, 15.02.2009, 00:39
    - DJGPP libmpeg2 0.5 ? Libogg ? - rr, 14.02.2009, 23:18
      - DJGPP libmpeg2 0.5 ? Libogg ? - FFK, 15.02.2009, 14:10
        DJGPP libmpeg2 0.5 ? Libogg ? - rr, 15.02.2009, 14:53
        DJGPP libmpeg2 0.5 ? Libogg ? - rr, 15.02.2009, 15:37
        DJGPP libmpeg2 0.5 ? Libogg ? - FFK, 15.02.2009, 20:02
        DJGPP libmpeg2 0.5 ? Libogg ? - rr, 15.02.2009, 20:42
        DJGPP libmpeg2 0.5 ? Libogg ? - FFK, 15.02.2009, 21:02
        DJGPP libmpeg2 0.5 ? Libogg ? - rr, 15.02.2009, 21:47
        DJGPP libmpeg2 0.5 ? Libogg ? - rr, 15.02.2009, 22:02
        DJGPP libmpeg2 0.5 ? Libogg ? - FFK, 15.02.2009, 23:08
        DJGPP libmpeg2 0.5 ? Libogg ? - rr, 18.02.2009, 23:15
        DJGPP libmpeg2 0.5 ? Libogg ? - Rugxulo, 15.02.2009, 21:29
        DJGPP libmpeg2 0.5 ? Libogg ? - FFK, 15.02.2009, 23:07
        DJGPP libmpeg2 0.5 ? Libogg ? - Rugxulo, 16.02.2009, 00:19
- DJGPP libmpeg2 0.5 ? Libogg ? - rr, 15.02.2009, 19:07
  - DJGPP libmpeg2 0.5 ? Libogg ? - FFK, 15.02.2009, 20:04
    - DJGPP libmpeg2 0.5 ? Libogg ? - rr, 15.02.2009, 20:16
      - DJGPP libmpeg2 0.5 ? Libogg ? - FFK, 16.02.2009, 23:11