Re: [OpenSIPStack] Codecs

[Ilian J. C. P. <ip...@so...>]

Hi,

Whit Thiele wrote:
> Hey guys,
>
> Is there a way to automatically set the ATLSIP library to use a specific
> codec and get rid of all the other selections? 
Currently, there is no clean way to get rid of other codecs. What you 
are doing here:
> Do I just set AudioCodec0 =
> "codec_name" and that's it? 
>   
however should be enough. This sets the default highest priority codec 
(0 being the highest priority).
> I've set the following in code:
>
> ATLSIP.AudioCodec0 = "G.711-uLaw-64k";
> ATLSIP.AudioCodec1 = "G.711-uLaw-64k";
>
>
> Is this the correct way to do this? I find ATLSIP is defaulting to gsm in
> some cases and I'm not sure why.
>   
Yes this is correct. Defaulting GSM to may be happening because no 
codecs were set prior to calling InitializeSIP(). This happens in 
SoftPhoneInterface::Initialize():

...
  for( PINDEX i = 0; i < 20; i++ )
  {
    PStringStream codecSlot;
    codecSlot << "Codec" << i;
    OString codec = m_Config->GetString( "Audio", codecSlot, "" );
    if( !codec.IsEmpty() )
      formatMask.AppendString( codec );

  }

  if( formatMask.GetSize() == 0 )
  {

    m_Config->SetString( "Audio", "Codec0", "iLBC-13k3" );
    formatMask.AppendString( "iLBC-13k3" );

    m_Config->SetString( "Audio", "Codec1", "GSM-06.10" );
    formatMask.AppendString( "GSM-06.10" );
  }
...

Make sure that you have set ATLSIP.AudioCodecX before calling 
InitializeSIP().

Regards,
Ilian
> Whit
>
>
>
>
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