It's an option. It was left like this to match the Vorbis comment field
format.
Phil
<p>On Tue, Feb 11, 2003 at 02:16:03PM +0000, Phil Kerr
wrote:> A, very quick, hack to add another optional method could look something
> like this:
>
> 0 1 2 3
> 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
> | ..... |
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> | bsz 0 | bsz 1 | Num Audio Channels |c|m|o|r|x|x|x|x|
> +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
> | URI string length |
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> .. URI string |
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> . Hash Key |
> +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
> | ..... |
>
> I've added a 'r - reference' flag and the URI and hash fields
should
> provide enough info. Is this close to what you had in mind?
URIs cannot have null characters in them, so why don't you simply have a
null terminated string for the URI and no length?
You could set an upperbound on the URI if you want to make sure it will
fit in 1 packet if you like.
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