10.05.2014 22:45, Peter Meerwald wrote:
When Speex is compiled with FIXED_POINT defined, it scales float input
to ±32768 instead of ±1. In order to make floating point resampler
work with speex compiled with FIXED_POINT, we need to rescale the input
to speex. This rescaling does not hurt normal speex, so we do it
unconditionally.
floating point multiplication is quite costly on some platforms, I'd
rather not force everyone to scale every sample twice for no good reason
Well, on such platforms (*cough* ARM *cough*) I'd call it a bug to use
speex-float-* resamplers by default, or even to provide them at all. If
we fix that, then the extra multiplication in an already-very-slow path
would no longer be relevant.
--
Alexander E. Patrakov
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