Hello,
Yes,
I mean that setting volume to 0 (just try setting mic volume to 0 ) does
not actually mute the mic and remote party is able to hear the quiet (and
not so quite indeed) sound from the muted mic.
I was thinking somehow to set audio samples to zero maybe in
MpidWinMM::waveInCallbackStatic
Microphone's volume = 0 but samples are not 0:
a quick test within that function:
char *buff= ((PWAVEHDR) dwParam1)->lpData;
int n;
for(n=0; n < ((PWAVEHDR) dwParam1)->dwBytesRecorded; n++)
{
printf("%02x",(unsigned char) *(buff+n) );
}
ecffecffecffecffecffecffecffeeffecffecffeaffe8ffeaffeaffecffeefff0fff0fff0ffeeff
ecffeaffe8ffe8ffe8ffeaffecffeeffeeffeeffeeffeeffeeffecffecffeaffe8ffe8ffeaffecff
ecffecffeaffeaffeaffeefff0fff2fff2fff0ffeeffecffeaffeaffe8ffe8ffe8ffeaffecffecff
ecffecffeeffeefff2fff2fff0ffecffe8ffe6ffe6ffe8ffecfff0fff4fff4fff4fff4fff2fff0ff
ecffeaffe8ffe8ffe8ffeaffeefff0fff2fff6fff6fff8fff8fff6fff2ffeeffeaffeaffeaffecff
eefff2fff4fff2fff0ffeeffecffeefff2fff6fff8fff6fff2ffeeffeaffeaffecffeefff0fff2ff
f4fff4fff6fff8fff8fff6fff6fff4fff2fff0fff0ffeeffeeffeeffeefff2fff2fff2fff2fff2ff
f4fff4fff6fff8fffafffafff8fff4fff2ffeeffeefff0fff2fff6fff6fff8fff8fffafffafffaff
fafffafff8fff6fff4fff4fff6fff8fffafffcfffcfffcfff8fff6fff4fff2fff4fff6fff8fff8ff
f8fff8fffafffcfffcfffcfff8fff6fff2fff4fff6fff8fffafffafffafffafffcfffeff00000200
02000000fefffafff8fff8fff6fff6fff6fff8fffafffcfffeff00000000000000000000fefffcff
fafffafffafffafffafff8fff8fff8fffafffeff000004000400040000000000feff000000000000
0000000000000000040008000a0008000600020000000000000000000000fefffefffeff00000400
0800080008000600040004000400020002000000fefffeff00000400080008000800060004000600
0600080006000200000000000000040008000a000800040002000200060008000a0008000200feff
fcff0000040008000800060004000200020004000800080004000000fefffeff0000000002000400
060008000c000e000e000c00080004000000feff0000020006000a000c000e000e000c000a000600
0400020002000400060008000c000e000e000c000a0008000600060008000a000c000c000a000800
0600060008000c000c000e000c000a000a0008000800060006000600060006000600080008000800
0a000a000c000c000a00060004000400040008000e0012001400120010000c000c000a000a000a00
08000600040006000a0010001400160014000c00060002000200040008000c00100010000e000c00
0a000c000c000e000c000a0006000400040006000a000c000e000c000a000a000a000c0010001200
10000e000c0008000800060006000600080008000a000a000c000c000a000a000800080008000800
06000600060008000a000c000c000c0008000600060006000600060006000400060008000a000e00
Paulo
On Wed, Jul 15, 2009 at 12:27 AM, Alexander Chemeris <
[email protected]> wrote:
> Hi, Paulo,
>
>
>
> On Wed, Jul 15, 2009 at 05:33, Paulo Vicentini<[email protected]>
> wrote:
> > Currently mute feature on sipXtapi is implemented by putting the gain of
> the
> > mic to 0 using mixerSetControlDetails (win32) in MpCodec.cpp
> > But even though Window's mic gain is set to zero (Mixer) the audio is not
> > mute indeed; remote endpoint is still able to hear incoming RTP audio.
> > I am thinking on another approach, for instance, after mute is enabled, a
> > constant RTP payload is sent:
>
> I'm not sure I'm getting your idea. You still propose to send outgoing
> rtp packets, as we do currently. What is the difference?
> Or, do you mean that setting volume to 0 does not actually mute
> the mic and remote party is able to hear the very quiet sound from
> the muted mic?
>
>
> --
> Regards,
> Alexander Chemeris.
>
> SIPez LLC.
> SIP VoIP, IM and Presence Consulting
> http://www.SIPez.com
> tel: +1 (617) 273-4000
>
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