[h323plus] How to add for H323EndPoint capability for codec G.729 into h323plus library?

[Marek Wlizło]

Simon,

I solved my problem. Just copied files pair: lid.cxx/lid.hxx from 
openh323 to h323plus and recompile this library.
Probably someone removed those files during migrating openh323 to 
h323plus - maybe intentionally? - if yes, I didn't find any other easier 
way to achieve my goal.

Regards,
Marek

Simon Horne pisze:
> Marek
>
> You should still be able to use the depreciated code from 1.18.0 if you are
> upgrading. The capability handling etc has not significantly changed. Simply
> move the applicable LID classes from 1.18.0 into you project and compile
> against H323plus. 
>
> Simon
>
> -----Original Message-----
> From: h323plus-bounces at lists.packetizer.com
> [mailto:h323plus-bounces at lists.packetizer.com] On Behalf Of Marek Wlizlo
> Sent: Sunday, 11 October 2009 11:32 AM
> To: h323plus at lists.packetizer.com
> Subject: [h323plus] How to add for H323EndPoint capability for codec G.729
> into h323plus library?
>
> Hello!
>
> On the last Friday I decided to upgrade my project's libraries: pwlib 1.10.0
> -> 1.12.0 and openh323 1.18.0 -> h323plus 1.19.7.
> The project's application is a media-signaling gateway from DSS1 to
> H.323 protocol using my hardware with DSP for media converting.
>
> With previous openh323 library I don't have any problems with adding codecs
> supported by my DSP to capabilities table - I just simply create object
> 'mydevice' of class MyOpalDevice : public OpalLineInterfaceDevice and inside
> of it just add table 'CodecInfo':
>
> -static struct { const char * mediaFormat; } CodecInfo[] = -{
> - { OPAL_G729A },
> - { OPAL_G711_ALAW_64K },
> - { OPAL_G711_ULAW_64K },
> - { OPAL_G729 }
> -};
> -
> -//-------------------------------------------------------------------------
> ------------------------ 
>
> -
> -static PINDEX FindCodec(const OpalMediaFormat & mediaFormat) -{
> - LOGDBG(_("%s"), __PRETTY_FUNCTION__);
> -
> - for (PINDEX i = 0; i < PARRAYSIZE(CodecInfo); i++)
> - {
> - if (mediaFormat == CodecInfo[i].mediaFormat)
> - return i;
> - }
> - return P_MAX_INDEX;
> -}
> -
> -//-------------------------------------------------------------------------
> ------------------------ 
>
> -
> -OpalMediaFormat::List MyOpalDevice::GetMediaFormats() const -{
> - LOGDBG(_("%s"), __PRETTY_FUNCTION__);
> -
> - OpalMediaFormat::List formats;
> -
> - for (PINDEX i = 0; i < PARRAYSIZE(CodecInfo); i++)
> - {
> - formats.Append(new OpalMediaFormat(CodecInfo[i].mediaFormat));
> - }
> - return formats;
> -}
>
> After this it was enough to use static method:
> H323_LIDCapability::AddAllCapabilities(&mydevice, capabilities, 0, 0);
>
> during initialization of my endpoint in method:
> GatewayEndpoint::Init(bool initial)
> (where class GatewayEndpoint : public H323EndPoint).
>
> In h323plus there is not defined class OpalLineInterfaceDevice and for two
> days I can't find the way how to use codec's capabilities different than
> G.711-ALaw-64k{sw} or G.711-uLaw-64k{sw}. I need to add G.729 and G.729A. I
> must mention that I have read documentation from
> http://www.voxgratia.org/docs/faq.html#5_1 and there is explained how to use
> external plugins with software codecs. In my case I need to put into my
> GatewayEndpoint capabilities table information that my DSP just supports
> (G.729 and some others).
>
> Please help.
>
> Thanks in advance,
> Marek
>   



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