In article <[EMAIL PROTECTED]>,
Kristian Kielhofner <[EMAIL PROTECTED]> wrote:
> Hello everyone,
Hi Kris
> I am still on my quest to build a g729 compatible (yet license free)
> Asterisk system.
>
> Here is the latest... It seems that when Asterisk needs to indicate
> ringing or busy to a SIP channel that has already been answered (like
> with an IVR) it plays back audio using the values in ringtone.h and
> busy.h (generated by gentone during compilation). It seems that these
> are stored internally as ulaw audio files, and Asterisk simply plays
> them back when needed.
Looking at those two files, it would appear they are slin data.
> What I would like to do, as a hack (for now), is have a MOH class
> called ringtone (I'm not worried about busy - yet) with some .g729 files
> that are an EXACT replica of those ulaw files from above, just converted
> to g729 (I can handle that part). That way I can just use m(ringtone)
> as an argument to Dial().
>
> So, the final questions are:
>
> 1) Is my understanding of this "problem" correct?
>
> 2) Is this the simplest fix, or am I making this more complicated than
> it needs to be? I know that I can find some ringtones on the web, but I
> would like to have an EXACT replica of what Asterisk uses.
>
> 3) How can I get the sounds used by Asterisk from ringtone.h and busy.h
> in a ulaw (or slin) file?
OK, create a script called samples.pl containing the following:
#!/usr/bin/perl
$times = shift || 1;
undef $/;
$data = <>;
$data =~ /{\s*(.*?)\s*}/s;
@samples = split /[^0-9-]+/,$1;
print pack('v*',@samples) x $times;
#--end--
This will read busy.h or ringtone.h and output the values as a raw slin file.
You can pass a repeat count to samples.pl if you want to make a longer file.
You can convert that to whatever format you like using sox, e.g. for .wav:
samples.pl 50 <busy.h | sox -t raw -sw -c1 -r8000 - busy.wav
samples.pl 100 <ringtone.h | sox -t raw -sw -c1 -r8000 - ringtone.wav
Change .wav to .ul or .al for uLaw or aLaw output.
Hope this helps!
Cheers
Tony
--
Tony Mountifield
Work: [EMAIL PROTECTED] - http://www.softins.co.uk
Play: [EMAIL PROTECTED] - http://tony.mountifield.org
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