AW: [Flac-dev] Incomplete format description?
xflac at yahoo.com
Wed Jan 22 12:23:19 PST 2003
--- Tor-Einar Jarnbjo <Tor-Einar_Jarnbjo at grosch-link.de> wrote:
> > -----Ursprungliche Nachricht-----
> > Von: Josh Coalson
> > --- Tor-Einar Jarnbjo <Tor-Einar_Jarnbjo at grosch-link.de> wrote:
> > > Hi,
> > >
> > > have I just overseen a link, or is the format description on
> > > http://flac.sourceforge.net/format.html lacking information on
> how to
> > > actually decode the residual partitions to PCM sample data?
> > you are correct, it is not explicit enough. the encoded residual
> > is a string of Rice codes of the form 000nnn, where 000 is a unary
> > portion and nnn is the binary portion of length k, k being the
> > rice parameter. but there is a signed->unsigned transform before
> > rice coding that needs to be documented.
> Is this something you are working on, and expect to be ready in the
> future? I took a quick look at the libFLAC sources, but the OO-like
> implementation and pointer-shuffling is not very easy to understand.
yes, I will probably get to it soon after the release.
the encoding side is pretty convoluted but for decoding,
should be pretty straightforward once you ignore the
FLAC__SYMMETRIC_RICE stuff (which is not used). feel free to
ask questions about it here.
> The reason I am asking is, that I've started to implement a FLAC
> decoder for
> the Java Media Framework
cool, that was on my TODO list but way way down. I'm glad
you're doing it :)
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
More information about the Flac-dev