[Speex-dev] how to use fixed-point ?

[Jean-Marc Valin]

Most important thing: have you compiled Speex with FIXED_POINT enabled?

	Jean-Marc

Le mercredi 05 juillet 2006 à 17:51 +0100, patrick andrieux a écrit :
> Hi list !
> 
> I'm Patrick, a french student.
> i am developping a kind of softphone for pocket PC using speex.
> Sorry in advance for my bad english.
> 
> Till now, i had good results, but now i've a problem with encoding.
> 
> so to summarize, here is a short description of my work : 
>     I'm working on pocket pc
>     I'm developing a GUI in C#
>     I'm developing a dll in C++ which use speex functions
> 
> I capture audio from microphone using windows wave API.
> For it, I fill several buffers of 20ms, 160 samples.
> When the first or one of this buffer is full, a callback is called by
> wave API.
> So, at this moment, i want to encode this audio data. (and write them
> in a file)
> 
> But apparently, it's to slow, and consequently, all my data are not
> written.
> I've read some topic about that, and i guess i need to use the
> fixed-point stuff.
> 
> I tried to use speex_encode_int(...) instead of speex_encode(...) 
> but i have the same result when i read my file : no sound.
> I tried as well to change quality and complexity, and i have same bad
> result.
> My program work correctly if i don't encode the data, i get a perfect
> sound.
> So my problem is the encoding ...
> 
> So my question is, 
> how can i use fixed-point instead of floating-point ?
> (maybe i need to specify "--enable-fixed-point" but how can i do that
> on VS2005 ? )
> 
> Thanks a lot for your help.
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