[FFmpeg-devel] Handling of mono data in WMA lossless

Jakub Stachowski qbast at go2.pl
Wed May 2 10:11:42 CEST 2012

W dniu 2012-05-02 09:55, Mashiat Sarker Shakkhar pisze:
> On 5/2/2012 4:53 AM, Jakub Stachowski wrote:
> [...]
>> This is exactly what I have been missing. I guess it really pays to
>> actually have some idea how audio coding works. All my weird attempts to
>> copy data were unnecessary, for some reason reverse decorrelation was
>> restricted to case when both channels are coded. Removing that check
>> fixes my synthetic test files, real world test case and does not break 3
>> other random WMA files I tested. Patch is attached.
> [...]
> It's unfortunate that we are duplicating work. At libav-devel, we
> already have a patch for this -
> http://patches.libav.org/patch/21031/

I do check libav for anything new in WMA, but it was unfortunate timing 
- Kostya's patch was applied the same day I was working on mine.
> I can't pursue any party to not duplicate work. So I'll just point the
> fact out and be done with it. For the record, your patch is OK too,
> obviously.

Kostya's patch looks a little different - I have not made a change in 
mclms_predict. So one of them is less ok?

> Regards
> Shakkhar
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