RE: [Linphone-developers] Playing a wav file to the caller

[M Walton]

Hi Simon,

Many thanks this works a treat, i used the routines from msfileplayer and all 
came together well.

Now i have a small question regarding my filter, as you know its a soundcard 
filter with a read and write member

Lets say im in console.c, and i want to send a simple custom message to my 
filter - with just a messagetype parameter - could you suggest the best way to 
do this? im asking because i think there may already be a way to achieve this 
using the msfilter api, but i haven't sussed it yet.

Im happy to post the message in a msfilter message queue somewhere, im just 
looking for a way to pass simple status information into my filter really.

Thanks as always

billy

-----Original Message-----
From: Simon Morlat [mailto:address@hidden 
Sent: 11 December 2009 9:26 AM
To: M Walton
Cc: address@hidden
Subject: RE: [Linphone-developers] Playing a wav file to the caller

Le vendredi 11 décembre 2009 à 09:08 +0000, M Walton a écrit :
> Hi,
> 
> So to be able to play a wav file, the best bet is for me to decode the file 
> and pass the PCM samples directly to the input sample buffer inside my 
> soundcard filter - making sure its streaming at the same rate as the 
> requested connection speed?
> 
Sounds reasonable, unless you are ready to make big modifications in
audiostream.c .

> There is no PlayWav() function which is already implemented?
There is a wav header parsing function in src/msfileplayer.c, maybe it
can help.

Simon

> 
> Kindest regards
> 
> Billy
> 
> -----Original Message-----
> From: Simon Morlat [mailto:address@hidden 
> Sent: 11 December 2009 8:43 AM
> To: M Walton
> Cc: address@hidden
> Subject: Re: [Linphone-developers] Playing a wav file to the caller
> 
> Unfortunately, switching soundcards during calls is not supported in
> audiostream.c
> 
> Simon
> 
> Le mardi 08 décembre 2009 à 12:07 +0000, M Walton a écrit :
> > Hi,
> > 
> >  
> > 
> > How can i stream a wav file to the caller after the call has been
> > answered? i notice the 'play' command can only be used with files?
> > 
> >  
> > 
> > Im wondering if the following is possible:
> > 
> >  
> > 
> > 1) User calls
> > 
> > 2) Linphonec auto answers (using the -a command switch)
> > 
> > 3) Linphonec streams a wav file to the end user (simple 8KHz PCM)
> > 
> > 4) Linphonec now uses the soundcard to capture/playback as normal
> > 
> >  
> > 
> > Do i need to switch sooundcards, play the wav and then switch back?
> > 
> >  
> > 
> > Kindest regards
> > 
> >  
> > 
> > Billy Walton
> > 
> > Development Engineer
> > 
> > Lismore Instruments Ltd
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> > 
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> > 
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> > 
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> > 
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