- h323plus - lists.packetizer.com

h460.18/19
by Niek Kooij 18 Jan '08

18 Jan '08

Hello, As Simon wrote on 2007-12-25 there is some NAT traversal code in h323plus. I was wondering if the real h460.18 and 19 are also on the list to be implemented. And if so what would be the timeline for this? Niek

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How to add a generic Video Capability?
by Abhishek Rohilla 17 Jan '08

17 Jan '08

Hi I have been able to build mpeg4 plugin code taken from opal cvs. Its PluginCodec Definition has defined it as type PluginCodec_H323Codec_nonStandard. I have changed it to PluginCodec_H323Codec_generic and compiled it. Should mpeg4 capability be added as generic or non-standard? What is the difference between two? My application is loading the dll perfectly fine now but the capabilities are not being added because of the following reasons: 1.) Generic and non-standard video capabilties require *h323CapabilityData(last member in PluginCodec_Definition) to point to generic capability data info. This has not been defined in opal plugin code. 2.) H323Capability *CreateGenericVideoCap() is checking for PluginCodec_H323GenericCodecData in **PluginCodec_Definition and it is null currently ,so capability is not created *Can someone help me in how to define generic capability data and what all information it needs? I have recognized the structures in opalplugins.h but don't know how to fill them with suitable values for mpeg4 plugin. Please help Thanks *** *

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Caller ID Problem
by Kirav Patel 17 Jan '08

17 Jan '08

Hi, We have built Open H.323 based application which can dial about 100 numbers paralleled. We are trying to configuring Caller ID so all dialed numbers can see Caller ID. And to set it, we are using 'AddAliasName' function. Now when application dials to all numbers, some numbers can see Caller ID, some can not see. This is a kind of random behavior we are facing. We are setting same 'Alias' for multiple H.323 Endpoints - We are creating multiple H.323Endpoints and get them register with GK. We are using GnuGK in proxy mode and Soft switch is ahead to that. Now we want to know is this giving us trouble or there is some other mechanism should set up in order to set customized 'Alias' (Caller ID) at Endpoint? Any help or suggestion will be appreciated. Thanks in Advance, Kirav Patel No virus found in this outgoing message. Checked by AVG. Version: 7.5.516 / Virus Database: 269.19.5/1228 - Release Date: 1/16/2008 9:01 AM

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Presence support in h323plus (and GnuGk)
by Simon Horne 15 Jan '08

15 Jan '08

Guys I have made the first submission to the ITU on presence and have now added the basic code support to h323plus. It is hoped to have the support for it in GnuGk 2.2.8 (one after next release) The ITU submission for a bit of light reading. :-) http://ftp3.itu.ch/av-arch/avc-site/2005-2008/0801_Seo/AVD-3293.zip Simon ==================== Simon Horne email. s.horne(a)isvo.net Principal Maintainer h323plus Library Consulting and Contracting consulting(a)h323plus.org. ========================

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Failed to set video capability in my video conference based on openh323
by 柳溟 15 Jan '08

15 Jan '08

Hi everybody, I am developing a video conference based on openh323, right now, I failed to set video capability in my system. I wrote a new class named HMH323_H261Capability, derived from H323_H261Capability. class HMH323_H261Capability : public H323_H261Capability { PCLASSINFO(HMH323_H261Capability, H323_H261Capability) public: HMH323_H261Capability(unsigned qcifMPI, unsigned cifMPI, BOOL temporalSpatialTradeOff=TRUE, BOOL stillImageTransmission=FALSE, unsigned maxBitRate=850); virtual PObject *Clone()const; virtual H323Codec *CreateCodec(H323Codec::Direction direction) const; }; When the program begin, I use SetCapability (0, 1, new HMH323_H261Capability (0, 1, TRUE, FALSE, 8192)); and the program runs OK, However, when I connect MCU by calling H323EndPoint::MakeCall(remoteParty, NULL, token, userData); the program throw exception and exit. Here is the call stack KERNEL32! 7c812a5b() MSVCRTD! _CxxThrowException@8 + 57 bytes MSVCRTD! __RTDynamicCast + 383 bytes H323Capability::Compare(const PObject & {...}) line 427 + 23 bytes PObject::operator==(const PObject & {...}) line 1452 + 22 bytes H323Capabilities::FindCapability(const H323Capability & {...}) line 2075 + 26 bytes H323Capabilities::Merge(const H323Capabilities & {...}) line 2375 + 21 bytes H323Connection::OnReceivedCapabilitySet(const H323Capabilities & {...}, const H245_MultiplexCapability * 0x013f2c44, H245_TerminalCapabilitySetReject & {...}) line 4315 + 18 bytes H245NegTerminalCapabilitySet::HandleIncoming(const H245_TerminalCapabilitySet & {...}) line 603 + 48 bytes H323Connection::OnH245Request(const H323ControlPDU & {...}) line 3784 + 18 bytes H323Connection::HandleControlPDU(const H323ControlPDU & {...}) line 3742 + 18 bytes H323Connection::HandleControlData(PPER_Stream & {...}) line 3726 + 18 bytes H323Connection::HandleControlChannel() line 3666 + 18 bytes H245TransportThread::Main() line 599 PTLIBD! PThread::MainFunction(void *) line 1168 _threadstartex(void * 0x013e8ce0) line 212 + 13 bytes KERNEL32! 7c80b683() In the H323Capability::Compare PObject::Comparison H323Capability::Compare(const PObject & obj) const { PAssert(PIsDescendant(&obj, H323Capability), PInvalidCast);-->Failed Can anyone tell me the problem?

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Re: [h323plus] Problem with Logitech camera
by JF NP 15 Jan '08

15 Jan '08

Hi, Is it possible to have DirectShow enabled on native Windows simply by defining P_DIRECTSHOW in ptbuildopts.h? Is it necessary any other work? Br, ----- Mensaje original ---- De: Simon Horne <s.horne(a)packetizer.com> Para: JF NP <jfnp090274(a)yahoo.es> CC: H323plus <h323plus(a)lists.packetizer.com> Enviado: miércoles, 9 de enero, 2008 19:29:51 Asunto: RE: [h323plus] Problem with Logitech camera I will try and have stable release out within the next couple of weeks. Simon > -----Original Message----- > From: h323plus-bounces(a)lists.packetizer.com > [mailto:h323plus-bounces@lists.packetizer.com]On Behalf Of JF NP > Sent: Wednesday, January 09, 2008 11:35 PM > To: H323plus > Subject: Re: [h323plus] Problem with Logitech camera > > > Hi, Simon: > > Do you know when will the next version (with > DirectShow support) be released? > > BR, > > --- Simon Horne <s.horne(a)packetizer.com> escribió: > > > > > JP > > > > The problem is that not all windows webcams are > > supported with the existing > > VideoForWindows. Directshow fixes that unfortunately > > for pwlib 1.12 it is > > only available with mingw compilations for windows. > > I have checked a bit of > > work to allow it to be compiled with Visual Studio > > however that is in PTLib. > > Once we migrate to PTlib and release the stable > > version of h323plus the > > problem should be rectified. > > > > Simon > > > > > -----Original Message----- > > > From: h323plus-bounces(a)lists.packetizer.com > > > [mailto:h323plus-bounces@lists.packetizer.com]On > > Behalf Of JF NP > > > Sent: Wednesday, January 09, 2008 8:00 PM > > > To: h323plus(a)lists.packetizer.com > > > Subject: [h323plus] Problem with Logitech camera > > > > > > > > > Hi, > > > > > > I have a Logitech Communicate STX webcam, but I > > cannot > > > make it work with h323plus. I've attached a trace > > from > > > vidtest. Could anybody help me? > > > My computer runs Windows XP SP 2 (Spanish). > > > > > > Thanks in advance, > > > > > > > > > > > > ______________________________________________ > > > Web Revelación Yahoo! 2007: > > > Premio Favorita del Público. > > > > > > http://es.promotions.yahoo.com/revelacion2007/favoritos/ > > > > > > > > > ______________________________________________ > Web Revelación Yahoo! 2007: > Premio Favorita del Público. > http://es.promotions.yahoo.com/revelacion2007/favoritos/ ______________________________________________ Web Revelación Yahoo! 2007: Premio Favorita del Público. http://es.promotions.yahoo.com/revelacion2007/favoritos/

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MPEG4 Video Plugin
by Abhishek Rohilla 15 Jan '08

15 Jan '08

Hi I have to write a MPEG4 plugin for h323. Can anyone advise how I should start with it? I have seen the mpeg4 plugin on opal. It uses lot of ffmpeg files which is confusing me. I had tried to compile it but the plugin is giving linking errors for ffmpeg calls. Please help Thanks

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Re: [h323plus] Question about plugin codecs
by JF NP 15 Jan '08

15 Jan '08

Hi, When I said "all works fine", I refered to the loading of plugins, I have not tested Myphone2 with a videocall, so I have not seen the bug on CVideoOutputDevice. BTW, thank you Simon for your help regarding my OCX (MFC) problem. Now, all the plugins are loaded. Anyway, if I can solve the CVideoOutputDevice bug, I will contribute the solution to the community. Best regards, ----- Mensaje original ---- De: Simon Horne <s.horne(a)packetizer.com> Para: JF NP <jfnp090274(a)yahoo.es>; h323plus(a)lists.packetizer.com Enviado: viernes, 11 de enero, 2008 9:55:38 Asunto: RE: [h323plus] Question about plugin codecs What type of OCX is it? MFC or ATL. Its important as they behave differently with plugins. The problem is that the default directory for Ptlib when using COM (.ocx) is the desktop. Which is really annoying. In ATL you need to do the following in your H323EndPoint contructor PPluginManager & pluginMgr = PPluginManager::GetPluginManager(); pluginMgr.LoadPluginDirectory(pluginDir); This will load the plugins from that directory. If you are using MFC as with the case of MyPhone2 then there is a little more complicated so look at MyPhone2's CMyPhoneEndPoint() constructor to see how the plugins are loaded. Also you mentioned that you have MyPhone2 working with PtLib. Currently the CVS's MyPhone2 CVideoOutputDevice class is broken and does not display the video output correctly. It's a know problem that I have not yet got around to fixing. A small contribution back to the project on this would be appreciated for the benefit of the community. Simon -----Original Message----- From: h323plus-bounces(a)lists.packetizer.com [mailto:h323plus-bounces@lists.packetizer.com]On Behalf Of JF NP Sent: Friday, January 11, 2008 12:30 AM To: h323plus(a)lists.packetizer.com Subject: [h323plus] Question about plugin codecs Hi all, I have successfully compiled both PTLib and H323Plus on Windows. I've also compiled and tested MyPhone2. All goes fine. But I have another sample app written by myself that is an OCX (which links with PTLib and H323Plus) that manages all the H323 stuff and an EXE that uses the OCX to make a simple videocall. The problem is that my app cannot find the plugin codecs (neither audio nor video). I think that the problem could be related to the fact that I am using an OCX linked with PTLib, instead of an EXE. Is this correct? Is there any solution or workaround? Best regards, Web Revelación Yahoo! 2007: Premio Favorita del Público - ¡Vota tu preferida! ______________________________________________ Web Revelación Yahoo! 2007: Premio Favorita del Público. http://es.promotions.yahoo.com/revelacion2007/favoritos/

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can't compile pwlib/ptlib 1.12.0
by Frank Fischer 14 Jan '08

14 Jan '08

Hi all i'm struck with compile pwlib/ptlib 1.12.0 under VS 2003 (WinXP). Earlier versions of pwlib work great (and i compiled them without problems for years... so i'm quite irritated now), but with 1.12.0, no matter whether i get it from the h323plus website or from the openh323 download page at sourceforge i get problems. Just to make sure i'm not on the completly wrong: In the voxgratia "how to build pwlib" it says there is a project call "Console" in the pwlib.sln. Well, that's not true, there's just a "PWLib static" project which i guess must be the right one to compile. The "Console" project is still in the source but under "ptlib\src\ptlib\msos" as an "old" PTLib.dsp project. Now when compiling the "PWLib static" project, i get a lot of syntax errors. When compiling the "Console" project, the only error is, that "./podbc.cxx" may not be found (in fact it's not at the place the path points to). Now as my first question: which project shall i try to compile? And, is there anything to configure in advance, any options to be set (i added the FelxBison dir to the executable path, same with the PWLib dirs)? Thanks for your help Frank

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FECC H.224/H.281 Implementation
by mohammad alam 14 Jan '08

14 Jan '08

hi Simon As you suggested I have added H323_H224Capability(). The brief code is H323_H224Capability *p = new H323_H224Capability(); capabilities.Add(p); in a class derived from H323EndPoint. The watch window here doesnot show much. But exe crashes in BOOL H323_H224Channel::Start() at h224Handler->StartTransmit(); I think it is not getting pointer right Can you guide me from there. alam.

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PTLib compile errors
by Nyamul Hassan 13 Jan '08

13 Jan '08

Hi, I apologize beforehand if this is not the right list to ask questions on this topic. I had just tried unsuccessfully to compile PTLIB version 1.19.5 as downloaded from the H323+ website. I get 47 errors all on sound_directsound.h and sound_directsound.cx. I'm using MS VS.Net (running as administrator) on Windows Vista. Could someone please point to me what I might be doing wrong? Regards HASSAN

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Re: [h323plus] How to Add Extended Video Capability for H.239
by Abhishek Rohilla 11 Jan '08

11 Jan '08

Hi simon I am using H323plus version 1.19.5 and plugins version 1.19.5, both downloaded from h323plus site. Is custom size supported in these versions?? I have one doubt that the H263 plugin is H263+ supported or not. If it is not H263+, I guess it might not support the custom size then. Will the next release be supporting custom image size transmission? Currently my application closes the established video channel after call is connected.If current versions support custom image size , how should I go about it?

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Re: [h323plus] How to Add Extended Video Capability for H.239
by Abhishek Rohilla 11 Jan '08

11 Jan '08

Hi Simon I have put H239 work on hold till next release. I have one more problem. I am trying to support 1280 x 720 size video transmission but after call negotiations video channel is getting closed from my side because of some reason. I am using H263 dynamic capability for negotiating with DyLogic Mirial and have set width and heigth to 1280 and 720. I think H263 plugin must support all custom image sizes which are multiple of 4. But the video channel is getting closed after getting opened once. I have not been able to recognise the reason for it. Please help.

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Question about plugin codecs
by JF NP 11 Jan '08

11 Jan '08

Hi all, I have successfully compiled both PTLib and H323Plus on Windows. I've also compiled and tested MyPhone2. All goes fine. But I have another sample app written by myself that is an OCX (which links with PTLib and H323Plus) that manages all the H323 stuff and an EXE that uses the OCX to make a simple videocall. The problem is that my app cannot find the plugin codecs (neither audio nor video). I think that the problem could be related to the fact that I am using an OCX linked with PTLib, instead of an EXE. Is this correct? Is there any solution or workaround? Best regards, ______________________________________________ Web Revelación Yahoo! 2007: Premio Favorita del Público. http://es.promotions.yahoo.com/revelacion2007/favoritos/

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Re: [h323plus] Problem with Logitech camera
by JF NP 10 Jan '08

10 Jan '08

Thank you, Simon. ----- Mensaje original ---- De: Simon Horne <s.horne(a)packetizer.com> Para: JF NP <jfnp090274(a)yahoo.es> CC: H323plus <h323plus(a)lists.packetizer.com> Enviado: miércoles, 9 de enero, 2008 19:29:51 Asunto: RE: [h323plus] Problem with Logitech camera I will try and have stable release out within the next couple of weeks. Simon > -----Original Message----- > From: h323plus-bounces(a)lists.packetizer.com > [mailto:h323plus-bounces@lists.packetizer.com]On Behalf Of JF NP > Sent: Wednesday, January 09, 2008 11:35 PM > To: H323plus > Subject: Re: [h323plus] Problem with Logitech camera > > > Hi, Simon: > > Do you know when will the next version (with > DirectShow support) be released? > > BR, > > --- Simon Horne <s.horne(a)packetizer.com> escribió: > > > > > JP > > > > The problem is that not all windows webcams are > > supported with the existing > > VideoForWindows. Directshow fixes that unfortunately > > for pwlib 1.12 it is > > only available with mingw compilations for windows. > > I have checked a bit of > > work to allow it to be compiled with Visual Studio > > however that is in PTLib. > > Once we migrate to PTlib and release the stable > > version of h323plus the > > problem should be rectified. > > > > Simon > > > > > -----Original Message----- > > > From: h323plus-bounces(a)lists.packetizer.com > > > [mailto:h323plus-bounces@lists.packetizer.com]On > > Behalf Of JF NP > > > Sent: Wednesday, January 09, 2008 8:00 PM > > > To: h323plus(a)lists.packetizer.com > > > Subject: [h323plus] Problem with Logitech camera > > > > > > > > > Hi, > > > > > > I have a Logitech Communicate STX webcam, but I > > cannot > > > make it work with h323plus. I've attached a trace > > from > > > vidtest. Could anybody help me? > > > My computer runs Windows XP SP 2 (Spanish). > > > > > > Thanks in advance, > > > > > > > > > > > > ______________________________________________ > > > Web Revelación Yahoo! 2007: > > > Premio Favorita del Público. > > > > > > http://es.promotions.yahoo.com/revelacion2007/favoritos/ > > > > > > > > > ______________________________________________ > Web Revelación Yahoo! 2007: > Premio Favorita del Público. > http://es.promotions.yahoo.com/revelacion2007/favoritos/ ______________________________________________ Web Revelación Yahoo! 2007: Premio Favorita del Público. http://es.promotions.yahoo.com/revelacion2007/favoritos/

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Using PWlib with Visual Studio 2005
by Paul Chitescu 09 Jan '08

09 Jan '08

Hello! Does anyone have a solution for building PWlib and PWlib based programs and libraries (OpenH323/H323Plus) with Visual Studio 2005 and later? I found a link to a set of VS patches in some older archive but unfortunately that site and its domain has gone belly up. Is there any chance Visual Studio is going to be supported by PWlib or we should look for something else? Paul Chitescu

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FECC H.224/H.281 Implementation
by mohammad alam 09 Jan '08

09 Jan '08

Hi All I want to implement FECC H.224/H.281 in my project. I am using h323plus on windows platform. Can anybody guide me how to do that.? I have many queries related to that 1) Is h323_h224 channel is open by default in h323plus or do I need to open it explicitly 2) Which is the best way to get h224handler or h281handler? Regards Mohammad Alam

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Video Codec Plugin Problem Continued
by Abhishek Rohilla 09 Jan '08

09 Jan '08

Hi I have done as you mentioned in class derived from H323EndPoint. I added capabilities as follows. AddAllCapabilities(0, 0, "*"); AddAllUserInputCapabilities(0, P_MAX_INDEX); I am using Visual Studio.Net 2003 for my application. This is the trace in the output window of VS 2003 Loaded 'C:\PWLIB_PLUGINS\h261vic_pwplugin.dll', No symbols loaded. Loaded 'C:\PWLIB_PLUGINS\h263ffmpeg_pwplugin.dll', Symbols loaded. I guess the dlls are loaded but codecs are not actually plugged in because of some reason. When I checked the capabilities only two codecs G711 U and A law are there in it and remaining 8 enteries show H323_UserInputCapability string . Please Help!!!

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File Transfer Capability added to CVS
by Simon Horne 08 Jan '08

08 Jan '08

Guys I have added the first cut of the file transfer capability to the CVS. The implementation (which is really TFTP tunneled thro' RTP) currently has a default transfer rate of 132kbits/s or 16 Kbytes/s however the rate can be changed and the transfer speed negotiated between the parties. The concept uses large TFTP blocks that are segmented transmitted and resequenced via RTP. In this way large transfer rates are possible over error prone networks with UDP as well as being compatible with NAT Traversal mechanisms like GnuGk,STUN etc. If I get some time I will release a sample application. Simon

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Re: [h323plus] How to Add Extended Video Capability for H.239
by Abhishek Rohilla 08 Jan '08

08 Jan '08

Simon I think the reason why dynamic H263 codec is not being loaded is because of the flags field in PluginCodec_Definition For dynamic codec flag is PluginCodec_MediaTypeVideo | // audio codec PluginCodec_MediaTypeExtVideo | //extended video PluginCodec_RTPTypeExplicit, // specified RTP type which makes up value of 69. Now in H323PluginCodecManager::RegisterCodecs() function the check ( videoSupported && ((encoder.flags & PluginCodec_MediaTypeMask) == PluginCodec_MediaTypeVideo ) && strcmp(encoder.sourceFormat, "YUV420P") == 0 ) fails because (encoder.flags & PluginCodec_MediaTypeMask) == 5 and PluginCodec_MediaTypeVideo = 4 . There is no flag check for extended video. So the codec is not loaded. I am using H323plus version 1.19.5 downloaded from h323plus site. I am just calling AddAllCapabilities(0, 0, "*") to load the plugins. Is there something else to be done to load extended video capabilities because I think this call is not loading extended video codecs because of the reason mentioned above.

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Re: [h323plus] How to Add Extended Video Capability for H.239
by Abhishek Rohilla 07 Jan '08

07 Jan '08

Hi Simon I am now using the latest H263 plugin from CVS repository having extended video capability feature added. After adding all capabilities the capability table now shows only two types of H263 capability One for CIF and other for QCIF. The dynamic size capability which is defined in the PluginCodec_Definition is not loaded now and that only contains extended video support. So I am not able to open extended video channel since capability is not added. I have one more doubt that when OpenExtendedVideoSession is called it matches local extended videocapability with extended video capability in remote side capability table. But in my application when I check the remote side capability table it shows no extended video capability and the table size is just 3. So even if I am able to successfully add extended video capability on local side then remote side capability match will fail in OpenExtendedVideoSession () call. H323ExtendedVideoCapability * remoteCapability = (H323ExtendedVideoCapability *)remoteCapabilities.FindCapability(localCapability); I am connecting with Polycom PVX with H239 content check enabled. I have one more doubt regarding H323Plus and plugin versions given on www.h323plus.org and sourceforge.net h323plus cvs repository. Earlier I was using plugins version 1.19.5 downloaded from h323plus site but I guess the one on CVS is more updated. I am having some problems downloading entire code from CVS. When will the latest plugin and H323plus release be updated on h323plus site? Please help

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Re: [h323plus] How to Add Extended Video Capability for H.239
by Abhishek Rohilla 04 Jan '08

04 Jan '08

Hi I have done the following in class derived from H323EndPoint this->AddAllCapabilities(0, 0, "*"); this->AddAllExtendedVideoCapabilities(0,P_MAX_INDEX); Then during call I called H323Connection::OpenExtendedVideoSession( unsigned role,H323ChannelNumber &) in H323EndPoin::OnConnectionEstablished() In OpenExtendedVideoSession() it breaks without opening extended video channel because the check (remoteCapability != NULL) fails. I am trying to connect my application with Polycom PVX with H239 content enabled I couldn't find H239 sample on CVS on sourceforge. Please help.

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How to Add Extended Video Capability for H.239
by Abhishek Rohilla 03 Jan '08

03 Jan '08

Hi Simon Thanks for ur earlier response. Plugins are working perfectly fine now. Can u give me some way into how to create H.239 extended video channel. I guess we have to add extended video capability into capability table first but I have not succeeded in that till now. How can we change the default video channel to extended video channel for transmission of data. Thanks

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H323plus has native NAT support with GnuGK
by Simon Horne 02 Jan '08

02 Jan '08

Guys Just a quick note I have committed GnuGk Nat support into the H323plus CVS. This means that the library will be able to natively traverse NAT when registered with GnuGk. There is no special code changes required as the support has been integrated directly into the library. The only requirement is that you enable supporting nated endpoints in GnuGk. [RoutedMode] SupportNatedEndpoints=1 To work GnuGk needs to be on a public IP or configured to work behind a NAT (There is an example nat.ini in the /etc directory) Details of GnuGk Nat Traversal can be found here http://www.gnugk.org/nat-traversal.html Happy New Year Simon

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h323plus Makefile fails to install all headers
by Adam Williamson 26 Dec '07

26 Dec '07

Trying to build anything against h323plus, it quickly becomes obvious that there's a bug in the Makefile. It only installs include/*.h - not include/<subdirs>/*.h . So nothing will build, because h323.h references other headers from the subdirectories, which are not installed. This patch to Makefile.in makes it install the stuff from the subdirectories, resolving that problem. -- adamw

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