[h323plus] Issue with H.263 codecs set

Jan Willamowius jan at willamowius.de
Sun Jan 31 17:21:42 EST 2016


I looked at this patch and the code for FindCapability() in the
OpenMCU-ru fork looks very different from the H323Plus CVS. No way we
can simply use that one-line patch.

Also, I'm not really sure this is the issue Iurii was referring to.
Maybe you can explaina bit more what your issue was, Iurii ?


Jan Willamowius, Founder of the GNU Gatekeeper Project
EMail  : jan at willamowius.de
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Konstantin wrote:
> Hi Jan,
> I confirm, we have trouble with differentiating these codecs in openmcu, Andrey (xak) described it when tried to get worked new version of h323plus, his Russian notice: http://openmcu.ru/forum/index.php/topic,714.msg13067.html#msg13067
> Fix he talk about: https://github.com/muggot/openmcu/commit/8002f803c128c1cbed1b3fd7878aa50f37e11aac
> Regards,
> Konstantin Yeliseyev, kay27 at bk.ru
> http://openmcu.ru/
> --
> Sent from Mail.Ru app for Android Friday, 22 January 2016, 10:52PM +04:00 from Jan Willamowius < jan at willamowius.de> :
> >Hi Iurii,
> >
> >this is not really my field of expetise, but are you trying to use
> >multiple H.263 plugins at the same time ?
> >
> >I don't think that was ever intended. Pick the one that works best
> >for you and only use that one.
> >
> >Regards,
> >Jan
> >
> >-- 
> >Jan Willamowius, Founder of the GNU Gatekeeper Project
> >EMail  :  jan at willamowius.de
> >Website:  http://www.gnugk.org
> >Support:  http://www.willamowius.com/gnugk-support.html
> >
> >Relaxed Communications GmbH
> >Frahmredder 91
> >22393 Hamburg
> >Geschäftsführer: Jan Willamowius
> >HRB 125261 (Amtsgericht Hamburg)
> >USt-IdNr: DE286003584
> >
> >Iurii Gordiienko wrote:
> >> Hi all, 
> >> I need an advice - how to work with set of H.263 codecs. Basically, I have all H.263 codec types capability implemented: H.263, H.263-1998 and H.263-2000. All these capabilities uses same H245_VideoCapability::e_h263VideoCapability value for GetSubType function. In result my localCapabilities variable has all these 3 capabilities as well. 
> >> When I receiving remote capabilities the remoteCapabilities variable is loading by H323Capabilities::H323Capabilities(const H323Connection & connection, const H245_TerminalCapabilitySet & pdu) constructor and the function uses code like this (simplified): 
> >> H323Capability * capability = localCapabilities.FindCapability(pdu.m_capabilityTable[i].m_capability, capabilityNo, pdu); if (capability != NULL)  {           H323Capability * copy = (H323Capability *)capability->Clone();           copy->SetCapabilityNumber(capabilityNo);           if (copy->OnReceivedPDU(pdu.m_capabilityTable[i].m_capability))             table.Append(copy);           else             delete copy; } 
> >> The main issue -  localCapabilities.FindCapability function returns any first H.263 Capability from it's table, no matter which particular H.263 remote Capability was used, it only checks MainType and SubType... In result if remote side send me, for example, H.263-1998, but I have H.263 and H.263-1998 - I will have H.263 in result...  
> >> Now I'm trying to override Connection::OnReceivedCapabilitySet(const H245_TerminalCapabilitySet & pdu) function, extract H.263 codecs manually, store all these capabilities and update remoteCapabilities after, but may be exists a proper solution for this case? 
> >> 
> >> Thanks -- Iurii Gordiienko 
> >
> >

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