[FFmpeg-devel] [PATCH][RFC] Lagarith Decoder.

[Michael Niedermayer]

On Sun, Aug 09, 2009 at 10:26:11AM -0600, Nathan Caldwell wrote:
> On Sat, Aug 8, 2009 at 9:49 PM, Michael Niedermayer<michaelni at gmx.at> wrote:
> > On Sat, Aug 08, 2009 at 02:27:50PM -0600, Nathan Caldwell wrote:
> >> 2009/8/6 M?ns Rullg?rd <mans at mansr.com>:
> >> > Alexander Strange <astrange at ithinksw.com> writes:
> >> >
> >> >> On Aug 6, 2009, at 5:06 PM, Nathan Caldwell wrote:
> >> >>
> >> >>> Here's my first attempt at a Lagarith decoder. At the moment it only
> >> >>> handles YV12 content, I do plan on adding in the other modes (RGB24,
> >> >>> YUY2, and RGBA). I just wanted some input on things that need changed
> >> >>> before I get too far along.
> >> >>>
> >> >>> +static inline uint32_t clp2(uint32_t x)
> >> >>
> >> >> This name is kind of obscure.
> >> >
> >> > Furthermore, this is generic enough that it could be useful somewhere
> >> > else some time. ?It should go in some header file with other similar
> >> > stuff. ?It can also be easily optimised on CPUs with bit-counting
> >> > instructions (e.g. CLZ).
> >>
> >> ciel_pow2?
> >> I was surprised there wasn't something like this already. The same
> >> goes for the planar->packed memcpy and packed memset. I was surprised
> >> there wasn't anything like that already. Both are currently unused
> >
> > there is, interleaveBytes() in swscale at least
> 
> Am I allowed to use this in avcodec, however?

if you find a way that is clean+simple+portable+doesnt depend on swscale :)

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

It is dangerous to be right in matters on which the established authorities
are wrong. -- Voltaire
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