[vorbis-dev] Questions, questions

[Monty]

> So, converting back to the canonical 16-bit little endian PCM... I have a
> few questions:
> 
> The samples in the floats are linear, correct?

Yes.  All the 16 bit formats in common use are linear. 

> Will there always be two channels?  If not, how do I find out how many
> channels there are?

No, Vorbis will do mono and 5.1 as well (at a minimum).  vi->channels will hold
the number of channels (all the specifics of the audio will be in that struct).

> Should I just cast the char to a double?

That was a typo in the example I sent; it should be double **pcm (this is 
corrected in the example source in CVS).

> I also suppose that I will have to check the host's byte order, for if it
> is big endian the samples will all have to be converted to little
> endian...

I'm not sure what the fastest way to convert float to a specific endian ordered
16 bit integer (I'm an algorithms specialist; I'm very good at handling
complexity order and optimization, but I'm not terribly cood at writing
tactically tight code).  Perhaps Segher would have a suggestion?

Monty

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