[ogg-dev] OggPCM2 : chunked vs interleaved data

Rene Herman rene.herman at keyaccess.nl
Tue Nov 15 06:21:39 PST 2005

Jean-Marc Valin wrote:

> I made a few updates to OggPCM2 http://wiki.xiph.org/index.php/OggPCM2
> reflecting the latest discussions. Could everyone have a look at it and
> see if they agree. Otherwise, what do you feel should be changed?

You guys are probably off on some IRC channel somewhere discussing these 
things, but... why 64 bits for the CODEC identifier? 32 ("PCM ") should 
be fine?

Why store N-bit in the most significant bits and not least? Doesn't that 
mean an application would likely need to shift everything down again?

Pedantic: the sentence "Format IDs below 0x80000000 are reserved for use 
by Xiph and all the ones above are allowed for application-specific 
formats" leaves the use of 0x80000000 itself unspecified.


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