[Ffmpeg-devel] [RFC] fixed point mdct transform

Alex Beregszaszi alex
Sat Nov 26 12:27:17 CET 2005


> Note that there is already an integer mdct transform in 
> libavcodec/ac3enc.c. It can be the basis for a more precise one. I
> have  always considered the floating point FFT/MDCT support in
> libavcodec as a  temporary solution and my goal was to switch to all
> integer arithmetic  as soon as possible !

Imho it should be selectable, float vs int. The only problem is writing
optimal user (ac3 enc for example) code for it, which supports both
without penalty. I'm not even thinking about runtime switching :)

Alex Beregszaszi 			email: alex at fsn.hu
Free Software Network			cell: +36 70 3144424

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