flac dev - Jul 2006 - Building a Rice Encoder/Decoder from FLAC

I feel really silly asking this, but where is
read_residual_partitioned_rice
>
> _() ?  I tried using the standard find feature on text editors for all of
> the .c and .cpp files in libFLAC and libFLAC++, but nothing came up.


-Mary



On 7/11/06, Ralph Giles <giles@xiph.org> wrote:
>
> On Tue, Jul 11, 2006 at 04:17:41PM -0700, Mary Amon wrote:
>
> >                                                          Right now, I
am
> > looking in the src code of libFLAC, (I am looking through
> stream_encoder.c
> > in libFLAC src code), but its really confusing to someone who just
> learned
> > what ./configure meant today.
>
> Well, configure is obfuscating, but that's not really the problem.
>
> You're on the right track; the rice encode/decode stuff is all
> in libFLAC/stream_decoder.c, stream_encoder.c, and
> stream_encoder_framing.c. The decoder routine
> read_residual_partitioned_rice_() might be a good place to start.
>
> FLAC is highly modular code with lots of interfaces and abstraction
> layers; it takes lots of tracing to follow the flow and sort out
> the actual implementation. Keep at it though; it's good practice.
>
> > P.S.  I totally appreciate the very clean code and documentation! 
It's
> > making the learning much less painful than I think it could be.
>
> Yes, Josh's code is well written, in a C++ sort of way. :-)
>
> Good luck and let us know if you get stuck,
> -r
>
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On Tue, Jul 11, 2006 at 05:47:37PM -0700, Mary Amon wrote:
> I feel really silly asking this, but where is
read_residual_partitioned_rice
> >
> >_() ?  I tried using the standard find feature on text editors for all
of
> >the .c and .cpp files in libFLAC and libFLAC++, but nothing came up.
The implementation starts, in flac-1.1.2, in src/libFLAC/stream_decoder.c
line 2069. If you're on *nix, fgrep is your friend. :)

 -r

Partially on topic, have you guys thought about setting up an LXR
reference for the Xiph codebase? it's amazingly useful, I've been
working
on kernel code a lot recently (coding a driver for 2.6) and being able to
navigate the linux kernel source via a cross referenced web interface
makes it much faster.  LXR is an open source project that can be applied
to most C or C++ codebases, and basically takes your code and turns it
into a fully crosslinked set of HTML files with identifier search
capability.  </soapbox>

example here: http://lxr.xensource.com/lxr/ident?i=printk (identifier
search results for printk, the in-kernel equivalent to printf)

Ken Stein @ kastein@wpi.edu

On Tue, July 11, 2006 23:31, Ralph Giles wrote:
(snip)
> The implementation starts, in flac-1.1.2, in src/libFLAC/stream_decoder.c
> line 2069. If you're on *nix, fgrep is your friend. :)
(snip)