Hi all,

I just managed to compile the ogg vorbis encoder (www.xiph.org/ogg/vorbis) with dmc v830.
This itself is a big step because the previous versions failed to do it. They crashed with internal errors cgcod 2347 and cg87
268.
The porting to dmc was very easy. I had to add only two defines and to fix two mistyped function declarations and everithing
was just fine.
Because i know that encoding a wave file to ogg format is a very computational process, and because i was curious about how dmc
compares to vc in code optimizations and executable size, i compiled the encoder with vc6 too and run both encoders several
times against one wave file.

Here are the results:
both executables are static builds,
the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG
haven't touched the vc options

Size of compiled oggenc.exe file:
vc compiled- 1073152 bytes
dmc compiled- 1088028 bytes

average encoding time for first wav:
vc compiled-2m 00s
dmc compiled-2m 09s

Just in case i encoded another wave file:
vc compiled-2m 40s
dmc compiled-2m 51s

This are average times but the bigest deviation was 2 sec for both encoders.


Best regards
rado

Thanks for doing this. The differences seem inconsequential to me. It would be cool if you could fold the DMC support back into the main source tree for vorbis!

-Walter

"rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com...
> Hi all,
>
> I just managed to compile the ogg vorbis encoder (www.xiph.org/ogg/vorbis)
with dmc v830.
> This itself is a big step because the previous versions failed to do it.
They crashed with internal errors cgcod 2347 and cg87
> 268.
> The porting to dmc was very easy. I had to add only two defines and to fix
two mistyped function declarations and everithing
> was just fine.
> Because i know that encoding a wave file to ogg format is a very
computational process, and because i was curious about how dmc
> compares to vc in code optimizations and executable size, i compiled the
encoder with vc6 too and run both encoders several
> times against one wave file.
>
> Here are the results:
> both executables are static builds,
> the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG
> haven't touched the vc options
>
> Size of compiled oggenc.exe file:
> vc compiled- 1073152 bytes
> dmc compiled- 1088028 bytes
>
> average encoding time for first wav:
> vc compiled-2m 00s
> dmc compiled-2m 09s
>
> Just in case i encoded another wave file:
> vc compiled-2m 40s
> dmc compiled-2m 51s
>
> This are average times but the bigest deviation was 2 sec for both
encoders.
>
>
> Best regards
> rado
>
>

Hi,

I will send them the patches and the makefiles and i hope they will accept them. It will be good to have support for dmc in a big and popular project like this.

Just one thing. Are this the optimal switches for compilation or there is a better combination.

best regards
rado


Fri, 25 Oct 2002 12:27:38 -0700, "Walter" <walter@digitalmars.com> ?8H5:
> Thanks for doing this. The differences seem inconsequential to me. It would be cool if you could fold the DMC support back into the main source tree for vorbis!
> 
> -Walter
> 
> "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com...
> > Hi all,
> >
> > I just managed to compile the ogg vorbis encoder (www.xiph.org/ogg/vorbis)
> with dmc v830.
> > This itself is a big step because the previous versions failed to do it.
> They crashed with internal errors cgcod 2347 and cg87
> > 268.
> > The porting to dmc was very easy. I had to add only two defines and to fix
> two mistyped function declarations and everithing
> > was just fine.
> > Because i know that encoding a wave file to ogg format is a very
> computational process, and because i was curious about how dmc
> > compares to vc in code optimizations and executable size, i compiled the
> encoder with vc6 too and run both encoders several
> > times against one wave file.
> >
> > Here are the results:
> > both executables are static builds,
> > the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG
> > haven't touched the vc options
> >
> > Size of compiled oggenc.exe file:
> > vc compiled- 1073152 bytes
> > dmc compiled- 1088028 bytes
> >
> > average encoding time for first wav:
> > vc compiled-2m 00s
> > dmc compiled-2m 09s
> >
> > Just in case i encoded another wave file:
> > vc compiled-2m 40s
> > dmc compiled-2m 51s
> >
> > This are average times but the bigest deviation was 2 sec for both
> encoders.
> >
> >
> > Best regards
> > rado
> >
> >
> 
> 

I'd modify the switches as follows:

-6    Omit, since I adjust the default anyway to be the most recent
processor.
-a8    Omit, this is the default for win32. The default anyway is almost
always what is desirable.


"rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035633940@news.digitalmars.com...
> Hi,
>
> I will send them the patches and the makefiles and i hope they will accept
them.
> It will be good to have support for dmc in a big and popular project like
this.
>
> Just one thing. Are this the optimal switches for compilation or there is
a better combination.
>
> best regards
> rado
>
>
> Fri, 25 Oct 2002 12:27:38 -0700, "Walter" <walter@digitalmars.com> ?8H5:
> > Thanks for doing this. The differences seem inconsequential to me. It
would
> > be cool if you could fold the DMC support back into the main source tree
for
> > vorbis!
> >
> > -Walter
> >
> > "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com...
> > > Hi all,
> > >
> > > I just managed to compile the ogg vorbis encoder
(www.xiph.org/ogg/vorbis)
> > with dmc v830.
> > > This itself is a big step because the previous versions failed to do
it.
> > They crashed with internal errors cgcod 2347 and cg87
> > > 268.
> > > The porting to dmc was very easy. I had to add only two defines and to
fix
> > two mistyped function declarations and everithing
> > > was just fine.
> > > Because i know that encoding a wave file to ogg format is a very
> > computational process, and because i was curious about how dmc
> > > compares to vc in code optimizations and executable size, i compiled
the
> > encoder with vc6 too and run both encoders several
> > > times against one wave file.
> > >
> > > Here are the results:
> > > both executables are static builds,
> > > the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG
> > > haven't touched the vc options
> > >
> > > Size of compiled oggenc.exe file:
> > > vc compiled- 1073152 bytes
> > > dmc compiled- 1088028 bytes
> > >
> > > average encoding time for first wav:
> > > vc compiled-2m 00s
> > > dmc compiled-2m 09s
> > >
> > > Just in case i encoded another wave file:
> > > vc compiled-2m 40s
> > > dmc compiled-2m 51s
> > >
> > > This are average times but the bigest deviation was 2 sec for both
> > encoders.
> > >
> > >
> > > Best regards
> > > rado
> > >
> > >
> >
> >
>
>
>

    Default switches for VC 6 is not the same enviroment as for DMC, since
VC does not perform a lot of optimizations without the -O2 flag.

"Walter" <walter@digitalmars.com> escribió en el mensaje news:apc64i$hla$1@digitaldaemon.com...
> Thanks for doing this. The differences seem inconsequential to me. It
would
> be cool if you could fold the DMC support back into the main source tree
for
> vorbis!
>
> -Walter
>
> "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com...
> > Hi all,
> >
> > I just managed to compile the ogg vorbis encoder
(www.xiph.org/ogg/vorbis)
> with dmc v830.
> > This itself is a big step because the previous versions failed to do it.
> They crashed with internal errors cgcod 2347 and cg87
> > 268.
> > The porting to dmc was very easy. I had to add only two defines and to
fix
> two mistyped function declarations and everithing
> > was just fine.
> > Because i know that encoding a wave file to ogg format is a very
> computational process, and because i was curious about how dmc
> > compares to vc in code optimizations and executable size, i compiled the
> encoder with vc6 too and run both encoders several
> > times against one wave file.
> >
> > Here are the results:
> > both executables are static builds,
> > the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG
> > haven't touched the vc options
> >
> > Size of compiled oggenc.exe file:
> > vc compiled- 1073152 bytes
> > dmc compiled- 1088028 bytes
> >
> > average encoding time for first wav:
> > vc compiled-2m 00s
> > dmc compiled-2m 09s
> >
> > Just in case i encoded another wave file:
> > vc compiled-2m 40s
> > dmc compiled-2m 51s
> >
> > This are average times but the bigest deviation was 2 sec for both
> encoders.
> >
> >
> > Best regards
> > rado
> >
> >
>
>

For building vc executable i used the visual studio project files that come with vorbis packages and they all had "Optimize for speed" option selected, which includes the -O2 flag.

0 Tue, 29 Oct 2002 13:57:37 +0100, "Javier Gutiérrez" <nikkho@NOSPAM@hotmail.com> ?8H5:
>     Default switches for VC 6 is not the same enviroment as for DMC, since
> VC does not perform a lot of optimizations without the -O2 flag.
> 
> "Walter" <walter@digitalmars.com> escribió en el mensaje news:apc64i$hla$1@digitaldaemon.com...
> > Thanks for doing this. The differences seem inconsequential to me. It
> would
> > be cool if you could fold the DMC support back into the main source tree
> for
> > vorbis!
> >
> > -Walter
> >
> > "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com...
> > > Hi all,
> > >
> > > I just managed to compile the ogg vorbis encoder
> (www.xiph.org/ogg/vorbis)
> > with dmc v830.
> > > This itself is a big step because the previous versions failed to do it.
> > They crashed with internal errors cgcod 2347 and cg87
> > > 268.
> > > The porting to dmc was very easy. I had to add only two defines and to
> fix
> > two mistyped function declarations and everithing
> > > was just fine.
> > > Because i know that encoding a wave file to ogg format is a very
> > computational process, and because i was curious about how dmc
> > > compares to vc in code optimizations and executable size, i compiled the
> > encoder with vc6 too and run both encoders several
> > > times against one wave file.
> > >
> > > Here are the results:
> > > both executables are static builds,
> > > the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG
> > > haven't touched the vc options
> > >
> > > Size of compiled oggenc.exe file:
> > > vc compiled- 1073152 bytes
> > > dmc compiled- 1088028 bytes
> > >
> > > average encoding time for first wav:
> > > vc compiled-2m 00s
> > > dmc compiled-2m 09s
> > >
> > > Just in case i encoded another wave file:
> > > vc compiled-2m 40s
> > > dmc compiled-2m 51s
> > >
> > > This are average times but the bigest deviation was 2 sec for both
> > encoders.
> > >
> > >
> > > Best regards
> > > rado
> > >
> > >
> >
> >
> 
> 
Radoslav PASKALEV

--------------------------------------- 
e-mail         : rpaskalev@codix-france.com WEB            : http://www.codix-france.com

    In that case, is a good result of DMC to be at the level of VC!

"Radoslav Paskalev" <rpaskalev@crx.tm.fr> escribió en el mensaje news:1103_1035969382@news.digitalmars.com...
> For building vc executable i used the visual studio project files that
come with vorbis packages and they all had "Optimize for speed" option selected, which includes the -O2 flag.
>
> 0 Tue, 29 Oct 2002 13:57:37 +0100, "Javier Gutiérrez"
<nikkho@NOSPAM@hotmail.com> ?8H5:
> >     Default switches for VC 6 is not the same enviroment as for DMC,
since
> > VC does not perform a lot of optimizations without the -O2 flag.
> >
> > "Walter" <walter@digitalmars.com> escribió en el mensaje news:apc64i$hla$1@digitaldaemon.com...
> > > Thanks for doing this. The differences seem inconsequential to me. It
> > would
> > > be cool if you could fold the DMC support back into the main source
tree
> > for
> > > vorbis!
> > >
> > > -Walter
> > >
> > > "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com...
> > > > Hi all,
> > > >
> > > > I just managed to compile the ogg vorbis encoder
> > (www.xiph.org/ogg/vorbis)
> > > with dmc v830.
> > > > This itself is a big step because the previous versions failed to do
it.
> > > They crashed with internal errors cgcod 2347 and cg87
> > > > 268.
> > > > The porting to dmc was very easy. I had to add only two defines and
to
> > fix
> > > two mistyped function declarations and everithing
> > > > was just fine.
> > > > Because i know that encoding a wave file to ogg format is a very
> > > computational process, and because i was curious about how dmc
> > > > compares to vc in code optimizations and executable size, i compiled
the
> > > encoder with vc6 too and run both encoders several
> > > > times against one wave file.
> > > >
> > > > Here are the results:
> > > > both executables are static builds,
> > > > the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG
> > > > haven't touched the vc options
> > > >
> > > > Size of compiled oggenc.exe file:
> > > > vc compiled- 1073152 bytes
> > > > dmc compiled- 1088028 bytes
> > > >
> > > > average encoding time for first wav:
> > > > vc compiled-2m 00s
> > > > dmc compiled-2m 09s
> > > >
> > > > Just in case i encoded another wave file:
> > > > vc compiled-2m 40s
> > > > dmc compiled-2m 51s
> > > >
> > > > This are average times but the bigest deviation was 2 sec for both
> > > encoders.
> > > >
> > > >
> > > > Best regards
> > > > rado
> > > >
> > > >
> > >
> > >
> >
> >
> Radoslav PASKALEV
>
> ---------------------------------------
> e-mail         : rpaskalev@codix-france.com
> WEB            : http://www.codix-france.com
>
>