Re: [mpg123-users] What is MPG123_ENC_FLOAT exactly?

[Thomas O. <tho...@or...>]

Am Mon, 07 Jan 2013 20:33:19 +0200
schrieb Nikos Chantziaras <re...@gm...>: 

> I want to get float samples from libmpg123 in order to do easier post 
> processing on them (mixing, etc.)  I noticed that there are three float 
> formats: MPG123_ENC_FLOAT, MPG123_ENC_FLOAT_32 and MPG123_ENC_FLOAT_64.

The _64 is rather theoretical for now. _FLOAT is a common mask that
matches both float formats. Just use MPG123_ENC_FLOAT_32 when you want
to specify a format.

> And a somewhat related question: can I assume that float samples 
> returned by mpg123_read() are supposed to have a range of [-1, 1) 

Nominal range is [-1;1] (full scale), but it could go over that range depending on
data. You are responsible for handling clipping/limiting.


Alrighty then,

Thomas