[Flac-dev] OS X FLAC Frameworks + 5.1 channel order

Josh Coalson xflac at yahoo.com
Wed May 10 16:16:15 PDT 2006

--- Arek Korbik <arkadini at gmail.com> wrote:
> Hi,
> First - XiphQT uses libFLAC and libFLAC++, which are built as
> Mac-specific Framework bundles (libs + public API headers), which in
> turn are distributed with binary XiphQT releases, or framework
> binaries can be downloaded separately. As I don't have access to the
> FLAC source repository, the Xcode build files can be found on:
> http://people.xiph.org/~arek/snapshots/flac-osx-build.tgz
> if you would like to add it to your repository. It builds the two
> aforementioned frameworks out-of-the-box, but without assembly code.
> As OS X got multi-platform, and OS X developer tools seem to include
> nasm by default, somebody could probably have a look. I'd be glad to
> have those frameworks built with optimised code, and am willing to
> help with that - as long as the frameworks work properly on both
> platforms in result.

cool, thanks.

> Second is a question of channel layout mappings for FLAC files with
> more than 2 channels. Vorbis I, section 4.3.9 defines default
> interpretation (mapping 0) for several cases, including 5.1 surround.
> Are there any guidelines or suggestions for FLAC files? There was a
> discussion about channel mappings couple of years ago, but without
> any definitive conclusions.
> I've just added support for Vorbis mappings to XiphQT and I'd really
> like to be able to add similar functionality for FLAC too. Any
> thoughts on that?

unfortunately channel mappings are currently only specified for
stereo.  I plan on adding common mappings for 5/6/7.1 in the next
release, probably following vorbis conventions, but that won't be
out until around august.


Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 

More information about the Flac-dev mailing list