Re: [MP3 ENCODER] LAME on .NET

2003-03-24 Thread Bob Cain


Jon Skeet wrote:
> 
> Has anyone tried to convert LAME to .NET at all? 

What does it mean to convert to .NET?


Bob
-- 

"Things should be described as simply as possible, but no
simpler."

 A. Einstein
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RE: [MP3 ENCODER] LAME on .NET

2003-03-24 Thread Jon Skeet
> Jon Skeet wrote:
> > Has anyone tried to convert LAME to .NET at all? I was 
> > wondering whether it might not be an interesting project, 
> >partly for performance comparison purposes

> I'm sorry but you will not gain any performance enhancements by 
> converting Lame to CLR byte code.

No, I wasn't expecting to. However, I wouldn't expect to *lose* very much either, 
contrary (I suspect) to the expectations of a lot of people. So long as the .NET 
version was within 10% of native performance, I think I'd deem that reasonably 
acceptable.

Jon

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Re: [MP3 ENCODER] LAME on .NET

2003-03-24 Thread Gabriel Bouvigne
Jon Skeet wrote:
Has anyone tried to convert LAME to .NET at all? I was wondering whether it might not be an interesting project, 

partly for performance comparison purposes
I'm sorry but you will not gain any performance enhancements by 
converting Lame to CLR byte code.
If you just mean compiling it under visual studio .net (aka visual c++ 
7), you will just speed things up by about 5% compared to visual c++6.

Regards,


Gabriel Bouvigne
www.mp3-tech.org
personal page: http://gabriel.mp3-tech.org
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[MP3 ENCODER] LAME on .NET

2003-03-24 Thread Jon Skeet
Has anyone tried to convert LAME to .NET at all? I was wondering whether it might not 
be an interesting project, partly for performance comparison purposes and partly to 
provide a nice easy way for .NET developers to encode sound.

I'd be interested in putting a lot of the effort in if others were willing to help and 
guide me - not being familiar with the LAME code *at all*. Of course, if it's already 
been done, I'll abandon the idea quickly :)

Jon

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Re: [MP3 ENCODER] LAME on PocketPC

2003-03-24 Thread Gabriel Bouvigne
Michael Niemeck wrote:
Recently got my Compaq IPAQ PocketPC, which - supposedly - sport a 400 MHz
Processor. Since LAME is said to "faster than real time on a PII 266 at
highest quality mode" I decided to give it a try.

To my horror, encoding a 2 second chunk of raw PCM data takes up 40 seconds,
and even at lowest quality needs at least 4 seconds.
Well, the most important problem is that you probably do not have any 
floating point unit on your processor. Emulating floating point 
instructions is very time consuming.
To speed up lame, you might want to use "-f" and "-m m" in order to use 
fast mode and mono.

I think that some people on this list tryed to port lame code to fixed 
point. Perhaps they might give you some indications.

Regards,


Gabriel Bouvigne
www.mp3-tech.org
personal page: http://gabriel.mp3-tech.org
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