[FFmpeg-soc] AAC: Rewrite windowing code

Michael Niedermayer michaelni at gmx.at
Wed Jul 16 00:20:10 CEST 2008


On Tue, Jul 15, 2008 at 09:05:19PM +0100, Robert Swain wrote:
> Hello,
> 
> Loren has suggested that the AAC windowing code be rewritten such that
> each frame outputs samples starting with the midpoint of last MDCT
> block in the previous frame, and ending with the midpoint of last MDCT
> block in the current frame. This makes sense as far as MDCT codecs go
> and should simplify the code a bit as I transition to using
> imdct_half() and vector_fmul_window().
> 
> Michael: What do you think about this?

good idea


> 
> Anyone: How should the valid but 'meaningless' transitions (some form
> of short stop to long start or vice versa) be handled?

the way it sounds best, and if 2 sound equally good the simpler one.

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Republics decline into democracies and democracies degenerate into
despotisms. -- Aristotle
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