Bug#879076: libopenshot: FTBFS on ppc64(el) and powerpc: several tests report discrepancies

[Aaron M. Ucko]

Source: libopenshot
Version: 0.1.8+ds1-1
Severity: important
Tags: upstream
Justification: fails to build from source
User: debian-powerpc at lists.debian.org

Builds of libopenshot for ppc64el and the non-release architectures
powerpc and ppc64 have been failing with mostly identical errors, as
detailed at

https://buildd.debian.org/status/fetch.php?pkg=libopenshot&arch=ppc64el&ver=0.1.8%2Bds1-1&stamp=1508343041&raw=0
https://buildd.debian.org/status/fetch.php?pkg=libopenshot&arch=powerpc&ver=0.1.8%2Bds1-1&stamp=1508342906&raw=0
https://buildd.debian.org/status/fetch.php?pkg=libopenshot&arch=ppc64&ver=0.1.8%2Bds1-1&stamp=1508342970&raw=0

The only difference in errors between the architectures is that on
ppc64, FFmpegReader_Check_Video_File crashes (at line 82) before it
can report any errors, as does FFmpegWriter_Test_Webm (which is
otherwise successful).

Apart from that, there are a total of 29 discrepancies across the
tests Clip_Effects, FFmpegReader_Check_Video_File,
ImageWriter_Test_Gif, and Timeline_Check_Two_Track_Video.

In Clip_Effects, three values that should be 255 come out 239, and
three that should be 0 come out 16.  (NB: 16 + 239 = 255.)

In FFmpegReader_Check_Video_File (when it doesn't crash altogether),
five values come out somewhat greater than expected.

In ImageWriter_Test_Gif and Timeline_Check_Two_Track_Video, a number
of values come out 0 -- four in ImageWriter_Test_Gif and fourteen in
Timeline_Check_Two_Track_Video.

Could you please take a look?

Thanks!

-- 
Aaron M. Ucko, KB1CJC (amu at alum.mit.edu, ucko at debian.org)
http://www.mit.edu/~amu/ | http://stuff.mit.edu/cgi/finger/?amu@monk.mit.edu