[FFmpeg-devel] [PATCH] 'j_rev_dct_ARM' bugfix

Diego Biurrun diego
Thu Nov 13 16:43:14 CET 2008


On Thu, Nov 13, 2008 at 01:01:28AM +0000, M?ns Rullg?rd wrote:
> Diego Biurrun <diego at biurrun.de> writes:
> 
> > On Wed, Nov 12, 2008 at 08:29:14PM +0000, M?ns Rullg?rd wrote:
> >> Siarhei Siamashka <siarhei.siamashka at gmail.com> writes:
> >> 
> >> > This is a bugfix for ARMv4 assembly implementation of 'j_rev_dct'
> >> > function.
> >> >
> >> > The problem was in the incorrect partially empty row detection. Even
> >> > if the first two coefficients in the row were nonzero, it handled
> >> > this just like the case with only the first nonzero coefficient.
> >> >
> >> > Now this function produces exactly the same output as the stripped
> >> > down reference C version of 'j_rev_dct' (with the nested checks like
> >> > 'if (d6) { if (d2) { ...' always evaluated as true, avoiding
> >> > shortcut branches).
> >> 
> >> Thanks, applied.
> >
> > Note that Siarhei is a committer now.
> 
> Yeah, I forgot about that.  What's his username?

serge.  I dunno off the top of my head if he has committed yet...

Diego




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