[FFmpeg-devel] [RFC] avcodec: Add native DCA decoder based on libdcadec.

foo86 foobaz86 at gmail.com
Fri Jan 8 15:40:29 CET 2016

On Thu, Jan 07, 2016 at 03:32:50PM +0100, Christophe Gisquet wrote:
> One commit implements "sum/diff decoding", introducing sumdiff_X
> functions, with X fixed or float.
> I think those are the corresponding butterflies_X functions in the
> AV(Float|Fixed)DSPContext structures. But I haven't verified the
> alignment requirements.

Seems to be it, thanks for your suggestion. Changed the floating point
code to use butterflies_float. Core decoder doesn't use
AVFixedDSPContext currently, so I left an ad-hoc fixed point approach.

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