The current status of the Ogg code hasn't changed from what is on SqueakMap.
I got distracted by real-life and a desire to come up with a Resource
framework to handle all the different types of media. I looked at
integrating to the Sound framework that is in Squeak and was turned off
completely.

IMHO Squeak should have the Multimedia title removed and replaced with
Multi-Spaghetti. Yes it can use lots of different media as long as you know
exactly what type it is first and figure out where that reader is in the
hierarchy (and hope it was finished and not just hacked for one person's
benefit). As Squeak has evolved, the Multimedia part has devolved.

I posted a Resource framework a while back to get some comments if it would
gain acceptance and heard nothing back. I have just looked at VisualWorks
7.3.1 and saw they have almost exactly the same idea finished! I am going to
explore a bit further with a view of doing something similar for Squeak but
I must admit I am discouraged by the lack of interest of the movers and
shakers of this community.

Russell

> -----Original Message-----
> From: squeak-dev-bounces at lists.squeakfoundation.org [mailto:squeak-dev-
> bounces at lists.squeakfoundation.org] On Behalf Of Brad Fuller
> Sent: Friday, 11 November 2005 4:35 AM
> To: The general-purpose Squeak developers list
> Subject: Re: OggVorbis player
> 
> stéphane ducasse wrote:
> 
> > hi
> >
> > I wanted to know what is the status of the OggVorbis player since we
> > said that we would include it in the full version of
> > 3.9 if it was ready.
> 
> Back in june of 2004, Russell Penney announced the beginning of his
> port. i don't know ithe current status. Here's the original msg:
> 
> -------- Original Message --------
> Subject: [ANN] "Pure" Ogg-Vorbis decoder
> Date: Fri, 11 Jun 2004 21:02:11 +1000
> From: Russell Penney <russell.penney at tincanct.com>
> Reply-To: The general-purpose Squeak developers list
> <squeak-dev at lists.squeakfoundation.org>
> To: squeak-dev at lists.squeakfoundation.org
> 
> 
> I have just released onto SqueakMap a “pure” Smalltalk port of the
> Ogg-Vorbis decoder from Xiph.
> 
> It is VERY slow, very buggy and the code is so ugly that it would
> definitely win the “Ugliest Code Competition”.
> I have had a compulsion to write an Ogg decoder and so I took the
> hardest, slowest way I possibly could because I am lazy (confused? Me
> too).
> 
> I could have linked the libraries via a plugin and saved myself a huge
> amount of work, but I convinced myself that a “pure” codec would be so
> cool.
> 
> I think it is definitely useable after much refactoring and
> optimisation. I have very little experience in Smalltalk, I use it as a
> hobby and so my knowledge of the correct structure for code like the Ogg
> stuff is very limited.
> 
> I am not going to have much time to spend on the code for at least a
> month probably two so rather than the code gather dust, I thought I
> would put it out so I can get some suggestions on the best way of tiding
> up the code. Great learning experience for me.
> The code is a mixture of the documented algorithm and the C code for the
> reference codec. It is missing many things (error checking being the
> main one) and will probably not decode all types of Ogg files.
> 
> I think Exceptions can be used for the error handling as sometimes
> reaching the end of a packet unexpectedly is fatal and sometimes its ok
> (you just return what you had decoded to that point). Is that right? Or
> is there something better (or more standard)?
> 
> There are a lot of loops; I guess you could say a lot of “passes” over
> the data to recover the audio. There is probably not a lot to be done to
> reduce the number of passes but a lot could be done to optimise each
> step individually. I must admit I only understand the algorithm a little
> bit and sections like the MDCT (Modified Discrete Cosine Transform) I
> have had to rip almost straight from the C code. I looked at the code
> for ages and could not figure out any way to make that code better/easy
> to understand. I don’t have enough of a maths background to understand
> the original equation for the transform and come up with a better way of
> doing it in Smalltalk.
> 
> Xiph released a version of OggVorbis called Tremour which is integer
> only (mainly for embedded devices). Would it be faster to modify the
> code to use integers only?
> 
> Obviously making sections of the code a plugin would be a good idea. One
> of reasons I wrote the whole thing in Smalltalk was so it would be easy
> to use Slang instead. I have left most of the loops as zero based and
> most ‘at:’ statements have “+1” added separately to make them easier to
> remove. I haven’t had the time to really get into Slang and plugins so
> any advice would be appreciated! :) What is the best class to subclass
> from? How do I do a plugin that doesn’t need any external code? For
> sections like the MDCT can I just put a huge chunk of C code in a
> method? How do I pass an array of floats?
> 
> I did try a little bit while I was coding but after my image crashed for
> the 10th time I gave up! :)
> 
> I have attached my test ogg file. You really want to try it on a small
> file as it is SLOW :)
> 
> Have fun
> 
> Russell
> 
> 
> 
> 
> --
> Brad Fuller
> (408) 799-6124
> ** Sonaural Audio Studios **
> (408) 799-6123  West San Jose
> (408) 799-6124  Cambrian
> ________________________________
> Hear us online: www.Sonaural.com
> See me on O'Reilly: http://www.oreillynet.com/pub/au/2184
>