[pjsip] Change from sound output from loud speaker to normal ear speakers on HTC devices

[Fabio Pietrosanti (naif)]

Simply there are several software out there that use the earpiece 
instead of the loudspeaker.

How they do?

It's a matter of reverse engineering their application a bit to 
understand exactly how they do, in terms of system call.

It should not be so complex imho, Windows Mobile it's a quite easy 
platform to reverse engineer.

Fabio

CalvIA IA wrote:
> Hi Fabio,
>
> Can you elaborate on the reversed engineering done to route the audio 
> output to the ear speakers?
>
> Thanks.
>
> Calvin
>
> On Fri, Oct 10, 2008 at 5:33 PM, Fabio Pietrosanti (naif) 
> <lists at infosecurity.ch> wrote:
>
>     Probably a "bit" of reverse engineering "for compatibility
>     purpose" (that's legal) would be required on those products.
>
>     Fabio
>
>
>     CalvIA IA wrote:
>
>         Hi,
>
>         oh, i did the listing out of sound devices, refering to the
>         sndinfo.c sample.
>
>         selected a different playback device from the list using
>         "pjsua_set_snd_dev ();"
>
>         yet the audio is still coming out from the rear speaker.  
>         I tested many other voip clients (Skype, Tivi, SJPhone) on WM,
>         I wonder how they route it successfully to the ear speakers.
>
>
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