[NUT-devel] vorbis global 3 to 1 header mess

[Oded Shimon]

On Wed, Jul 19, 2006 at 11:26:47AM -0400, Rich Felker wrote:
> On Wed, Jul 19, 2006 at 12:36:27PM +0200, Luca Barbato wrote:
> > Michael Niedermayer wrote:
> > > 
> > > how to parse all the vorbis header variants:
> > > 
> > > 1) search for the 1st occurance of 01,'v','o','r','b','i','s'
> > >    the found match and the following 23 bytes are the 1st header packet
> > > 2) search for the 1st occurance of 03,'v','o','r','b','i','s' after here
> > >   3) read an unsigned integer of 32 bits and skip that many bytes
> > >   4) [user_comment_list_length] = read an unsigned integer of 32 bits
> > >   5) iterate [user_comment_list_length] times {
> > >        6) read an unsigned integer of 32 bits and skip that many bytes
> > >      }
> > >   7) skip 1 byte
> > > 8) the match in 2) and what follows until here is the 2nd header packet
> > > 9) search for the 1st occurance of 05,'v','o','r','b','i','s' after here
> > >    the matching part and what follows is the 3rd header packet
> > > 
> > > if there are no objections then ill propose this on vorbis-dev
> > > spelling fixes and other suggestions welcome
> > > 
> > > [...]
> > 
> > Looks ok.
> 
> Needs to specify endianness for the 'unsigned integer of 32 bits'
> unless that's already clear from something else.. Otherwise looks
> good!

entire vorbis spec is spefied like this, all numbers are read in... bah, i 
don't remember, some endianess..

- ods15