[FFmpeg-devel] [RFC] What should pixdesc.h:write_line() do with PAL formats?

[Michael Niedermayer]

On Wed, Apr 01, 2009 at 01:03:49AM +0200, Stefano Sabatini wrote:
> On date Tuesday 2009-03-31 23:26:00 +0200, Michael Niedermayer encoded:
> > On Tue, Mar 31, 2009 at 10:56:06PM +0200, Stefano Sabatini wrote:
> > > Hi,
> > > 
> > > read_line() currently reads from the image the components
> > > corresponding to c and puts them in dst:
> > > 
> > > (index, c) -> comp(index, c)
> > > 
> > > The inverse operations cannot be done, so maybe write_line() should
> > > simply take in input a list of indexes and write them down to the
> > > destination image, but this will not be simmetric with read_line().
> > > 
> > > To remove the asymmetry we could treat PAL formats like non-PAL ones,
> > > so having read_line() read the indexes and writing them to dst, while
> > > write_line() would write the indexes back to the image. 
> > 
> > possible
> 
> After rethinking a bit about it I came out with this other idea, I'm
> simply extending read_line(), this should avoid bad code duplication,
> please check it.

PIX_FMT_PAL or at least the check could then be droped

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

The educated differ from the uneducated as much as the living from the
dead. -- Aristotle 
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