AW: [Flac-dev] Incomplete format description?

[Josh Coalson]

--- Tor-Einar Jarnbjo <Tor-Einar_Jarnbjo at grosch-link.de> wrote:
> > -----Ursprungliche Nachricht-----
> > Von: Josh Coalson
> >
> > Miroslav's suggestion is the best right now.  I probably should
> > hand-craft a stream that exercises a decoder as much as possible.
> 
> I've already tested my decoder with the options -0 to -8 and it
> works, but
> the streams doesn't contain any verbatim or constant subframes. I
> guess this
> depends heavily on the input file. Unpredictable noise will be coded
> as
> verbatim frames and periods of complete silence as constant frames?

yes.

> I'll see
> if I get to run the test-script mentioned, but I am not sure if my
> Linux
> installation is working very well.

Just reading over test_flac.sh and test_streams.sh will give
you some ideas.  There are some undocumented options to flac like:
--disable-fixed-subframes
--disable-constant-subframes
--disable-verbatim-subframes
that you can mix and match to create specific kinds of FLAC
files to test your decoder with.  Now thinking about I should
add --disable-lpc-subframes, but you should be able to get
some verbatim frames by encoding noise.

Josh


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