Re: [Ccrtp-devel] Re: CCRTP on Win32

[David Sugar]

RFC2833 involves specifying special payloads that are inserted and 
extracted mid-stream.  This should be possible to process thru the 
packet filtering code in ccRTP.  If you mean performing signal analysis 
on streaming audio, this involves several issues.  In 2833, DTMF is 
encoded by both tone and duration.  To extract and create a 2833 tone 
packet would mean sampling many audio packets to find the start and end, 
and interrupt data flow while this is occuring.

Hang Shi wrote:

> Hi, Federico,
>
> I am waiting to see your patch. As to the findCNAME function, because 
> Win32 platform with Visual does not provide <sys/utsname.h> POSIX 
> standard, that function can't be compiled (for example, the function 
> cname is not supported).
>
> Another question, do you have the plan to support DTMF tones (RFC 
> 2833) recently?
>
> Thanks.
> Hang
> At 11:23 AM 1/8/2002 +0100, Federico Montesino Pouzols wrote:
>
> > On Mon, Jan 07, 2002 at 06:45:59PM -0800, Hang Shi wrote:
> > > Hi, Federico,
> > >
> >
> >         Hi again,
> >
> > > I tried to compile the code and got some error messages:
> > > (1) the timer functions: gettimeofday, timersub, timeradd, etc. In 
> > Win32,
> > > looks we can use getTickCount. Where is the timersub/timeradd defined?
> >
> >         These are defined in sys/time.h in *nix systems. I have
> > already seen this problem with win32 in other libraries, so I will add
> > a patch to overcome it in ccRTP. I hope to be able to send this patch
> > to the ccrtp-devel list today. Perhaps, later we should add support
> > for this in Common C++ itself.
> >
> > > (2) findCNAME function only works for Unix. Any idea to fix this?
> > >
> >
> >         What do you mean with only works? Is it a compilation or a
> > runtime error?
> >
> > > Thanks.
> > > Hang
> > >
> >         Read you soon!
> >
> > PD: It should be better if we hold this conversation publicly through
> > the ccrtp-devel list, so other people can be aware and help to solve
> > this problems. Do you agree? If so, please, CC your answers to the
> > list.
>
>
>
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