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2005 Sep 03
4
Block sizes
For the Vorbis file I'm using to develop my decoder, I've read the Ogg header at the start of the file, and now I'm reading the Vorbis identification header. Everything checks out fine until I get to the block size byte (offset 28 starting at the packet type field). The byte value here is 184, which is a bit pattern of: 1011 1000. The low order 4 bits are 8. Squaring it gives