[FFmpeg-cvslog] r12284 - trunk/libavcodec/ac3dec.c

[Diego Biurrun]

On Fri, Feb 29, 2008 at 11:48:04PM -0500, Justin Ruggles wrote:
> jbr wrote:
> > 
> > Log:
> > Use 24-bit fixed-point transform coefficients until just before MDCT. This
> > gives 7% faster decoding on average.
> 
> And obviously a fixed-point MDCT would be even better so we wouldn't
> have to convert to float just for the MDCT then back to fixed for 16-bit
> output.  Then we could also change the downmixing and dynamic range
> scaling to fixed-point as well.

This obviously brings up the standard question: How well do we perform
compared to liba52 now?  Is it time to remove liba52 support from
FFmpeg?

Diego