Re: Mp3 Encoder/Decoder MC application

Hi there,

the platform is a microcontroller with dedicated DSP functionality and RISC load/store instruction capability. It supports IEEE-754 floating point data types.
What's MAD all about? Where can I find it?

cheers
Robert



-------- Original-Nachricht --------
Datum:  Sat, 9 Dec 2006 13:40:09 +0530
Von: "tech list" <[email protected]>
An: "MP3 encoders development list" <[email protected]>
Betreff:  Re: [mp3encoder] Mp3 Encoder/Decoder MC application

> MAD can be another option, but I am not sure how suitable it is for you.
> You have not mentioned what kind of platform you wish to port it to. If
> you really meant "microcontroller" and not DSP/RISC processor, then you
> are going to get real bad performance. Is your processor fixed point? You
> would then need to convert all the float code, unless you get some fixed
> point version. If you dont mind changing codecs, you can have a look at
> FAAC and FAAD, which is for AAC encoding/decoding.
> 
> 
> 
> On 10/25/06, Robert Leiking <[email protected]> wrote:
> >
> >
> > Hello there!
> >
> > I am an engineering student, and I've just started my final year
> project.
> > My project is related to Mp3 Encoding and Decoding,
> > so hopefully someone within this mailinglist can help me:
> >
> > I want to do some DSP performance tests of a specific microcontroller,
> > and I've chosen Mp3 Encoding/Decoding as an Example application.
> > At the start of the project I want to compile an open source Encoding an
> > Decoding Program into the controller without using any Operating System.
> > This application should be able to convert raw audio format streams
> > into the MP3 audio compression format and vice versa.
> > After the performance measurement, I am going to optimise the code with
> > predefined DSP library routines or hand- optimse it on Assembler level
> to
> > see the difference in performance behaviour.
> > So right now I am looking for useful and simple C code which requires
> the
> > least effort and minimum edits to compile it into the restricted
> environment
> > of a microcontroller.
> >
> > My first idea was to use LAME, since it's well maintained and tested.
> > but it seems to me that the Lame project has huge dimensions and is more
> > focussed on PCs with common Operating Systems. I am afraid that LAME
> offers
> > lots of features which I cannot use or which are needless for my aim. As
> I
> > already mentioned, it's just an example application for the main task of
> > checking DSP behaviour of the specific chip.
> > So, should I look for something else than LAME?
> >
> >
> > I would appreciate any kind of suggestions!
> >
> > Thanks!
> > Robert Leiking
> >
> >
> >
> >
> >
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