[FFmpeg-cvslog] r24134 - in trunk: Makefile tests/fate-run.sh

[Måns Rullgård]

Michael Niedermayer <michaelni at gmx.at> writes:

> On Fri, Jul 09, 2010 at 02:40:51AM +0200, mru wrote:
>> Author: mru
>> Date: Fri Jul  9 02:40:51 2010
>> New Revision: 24134
>> 
>> Log:
>> fate: add oneoff comparison method
>> 
>> This adds the 'oneoff' comparison method.  It compares two s16le pcm
>> files with a max difference <= the fuzz factor treated as success.
>> Default fuzz is 1.  On failure, the full tiny_psnr output is printed.
>
> it also might make sense to bound the sum of squared differences, and not
> just the maximum. A file having 1% of samples differing +-1 and one that is
> in 50% of samples +-1 off are not the same thing

With different floating-point rounding modes, it is perfectly normal
to have all negative samples off by one (round towards zero vs -inf).
That is the type of test this is intended for.

-- 
M?ns Rullg?rd
mans at mansr.com