[Ffmpeg-devel] [PATCH] MXF demuxer improvements

Michael Niedermayer michaelni
Fri Jul 28 19:16:16 CEST 2006


On Fri, Jul 28, 2006 at 12:47:50PM -0400, Rich Felker wrote:
> On Thu, Jul 27, 2006 at 10:54:16PM +0200, Baptiste Coudurier wrote:
> > Hi
> > 
> > I reworked MXF demuxer to prepare handling of other operationnal
> > patterns and streaming demuxing, with many changes, more accurate
> > parsing and simplified codec detection.
> > 
> > I'm not sure about the DECLARE_ALIGNED with typedef, is it right to do
> > that ?
> A better question would be... why? Surely there will never be SSE2
> code processing demuxer fields. If you want to process them
> system-word-at-a-time, use an array of long instead of char.

the thing which is being aligned is an array of bytes and under some
circumstances 4 of these bytes have to be read as an 32bit int and
that requires alignment on some architectures, surely these could
be read in a way which doesn need any alignment but the original code
needed it ...


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

In the past you could go to a library and read, borrow or copy any book
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