Re: [Cellar] Any use for FLAC decoding testfiles?

Steve Lhomme <slhomme@matroska.org> Sun, 10 October 2021 06:23 UTC

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From: Steve Lhomme <slhomme@matroska.org>
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Subject: Re: [Cellar] Any use for FLAC decoding testfiles?
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On 2021-10-05 10:05, Martijn van Beurden wrote:
> Hi all,
> 
> A few months ago I made a FLAC decoder testbench: a set of FLAC files
> specifically designed to test certain aspects of the decoding process,
> including rice partition escape codes, non-standard blocksizes, a
> variable blocksize, very small and very large predictor coefficient
> precision, wasted bits and extremely large metadata blocks.
> 
> Currently, it is a zip file with 59 FLAC files and a README. All FLAC
> files contain audio that is licensed under some Creative Commons
> license. More information can be found here:
> https://wiki.hydrogenaud.io/index.php?title=FLAC_decoder_testbench
> 
> Would such a testbench be of any use to this working group?

I think so. In particular all the files that cause 
crash/freeze/reboot(!) should help define the security issues that need 
to be looked at when handling a FLAC bitstream.

BTW, what did you use to create those bitstream ? How do you check they 
are actually valid ?

> Kind regards,
> 
> Martijn van Beurden
> 
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