[Re] Re: [Re] Re: [Iaxclient-devel] Setting output level on windows

[Cyril V. <cyr...@me...>]

De : mailto:st...@st...
Emission : 15/11/2004 21:10:15
> Cyril VELTER wrote:
> 
> >	I have a patch for alaw support (I just reworted it from scratch, inspired 
by 
> >the ulaw codec and some sun free code). Is it possible to include this in 
CVS ? 
> >and where should I post the patch ?
> >  
> >
> 
> I got your patch off-list, and it's now included in CVS.  I just had to 
> un-MSDOS-ify the files and merge new diffs.
> 
> It compiles clean, but I haven't actually tried it, but I'm sure people 
> on the list will let us know how it works out..


	Very nice,

	I just updated my local copy with cvs recompiled everthing and tested it with 
simpleclient/testcall (modified to force alaw usage) and it works.

> 
> If someone wants to, you can probably make decoding much faster by 
> compiling a table at initialization time, and then just doing a table 
> lookup at run time, like we do for ulaw.  There's really no downside to 
> this, because there are only 256 2-byte entries in the table, so it only 
> takes up 512 bytes.  OTOH, for a client, this all doesn't make much 
> difference, because we're unlikely to tax anything with encoding or 
> decoding.
> 
> Encoding is a bit different, because even with the method we use in 
> ulaw, there might still be some quantization.  (and a 64K table does 
> take more memory, doesn't always fit in cache well, etc).

	You are right. I'll test to see if there is a real difference.


	cyril velter