Hi Manmeet, I've read those 3 links. please explain to me what is the relation among sound device port, master port, and port zero. On Mon, Jan 28, 2013 at 8:37 PM, Manmeet Singh <manmeets at gc-solutions.net>wrote: > Hello Khoa, > > If following links don't clarify things then please do let me know. Then > I'll try and give you a snapshot of the complete scenario of how the > conference is designed in pjsip. > > snd_port > http://www.pjsip.org/pjmedia/docs/html/group__PJMED__SND__PORT.htm > master_port > http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__MASTER__PORT.htm > port > http://www.pjsip.org/docs/latest-2/pjmedia/docs/html/group__PJMEDIA__PORT.htm > > The media clock/timing extends the media port concept that is explained in > Media Ports Framework<http://www.pjsip.org/docs/latest-2/pjmedia/docs/html/group__PJMEDIA__PORT.htm>. > When clock is present in the ports interconnection, media will flow > automatically (and with correct timing too!) from one media port to another. > > There are few objects in PJMEDIA that are able to provide clock/timing to > media ports interconnection: > > - Sound Device Port<http://www.pjsip.org/docs/latest-2/pjmedia/docs/html/group__PJMED__SND__PORT.htm> > The sound device makes a good candidate as the clock source, and > PJMEDIA Portable Sound Hardware Abstraction<http://www.pjsip.org/docs/latest-2/pjmedia/docs/html/group__PJMED__SND.htm> > is designed so that it is able to invoke operations according to > timing driven by the sound hardware clock (this may sound complicated, but > actually it just means that the sound device abstraction provides callbacks > to be called when it has/wants media frames). > See Sound Device Port<http://www.pjsip.org/docs/latest-2/pjmedia/docs/html/group__PJMED__SND__PORT.htm> > for more details. > > > - Master Port<http://www.pjsip.org/docs/latest-2/pjmedia/docs/html/group__PJMEDIA__MASTER__PORT.htm> > The master port uses Clock Generator<http://www.pjsip.org/docs/latest-2/pjmedia/docs/html/group__PJMEDIA__CLOCK.htm> > as the clock source. By using Master Port<http://www.pjsip.org/docs/latest-2/pjmedia/docs/html/group__PJMEDIA__MASTER__PORT.htm>, > it is possible to interconnect passive media ports and let the frames flow > automatically in timely manner. > Please see Master Port<http://www.pjsip.org/docs/latest-2/pjmedia/docs/html/group__PJMEDIA__MASTER__PORT.htm> > for more details. > > > Regards > Manmeet > > > On 01/28/2013 06:53 PM, Khoa Pham wrote: > > Thanks Gaurav for the prompt reply, I've already read that link. > "A master port has two media ports connected to it". What are those 2 > media ports? > In "pjmedia_conf" structure, there are "master_port", "snd_port" and > "ports" list, how are they related ? > > > On Mon, Jan 28, 2013 at 8:15 PM, Gaurav Srivastava < > gaurav.srivastava2 at agnity.com> wrote: > >> Hi Khoa, >> >> >> >> Please go through the link >> >> >> http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__MASTER__PORT.htm >> >> >> >> In case not fruitful, please let me know. >> >> >> >> Thanks and Regards, >> >> Gaurav >> >> >> >> >> >> >> >> -----Original Message----- >> *From:* pjsip [mailto:pjsip-bounces at lists.pjsip.org] *On Behalf Of *Khoa >> Pham >> *Sent:* Monday, January 28, 2013 6:33 PM >> *To:* pjsip list >> *Subject:* [pjsip] What is master port and port zero ? >> >> >> >> When reading conference bridge on pjsip.org/pjmedia/docs, I see these 2 >> port. What are they, are they the same ? >> >> >> >> When running pjsua_app, I use "cl" command to list port in conference >> bridge, I see >> >> >> >> pjsua_var.mconf->master_port->info->name = "Wave mapper" >> >> pjsua_var.mconf->ports[0]->name = "Wave mapper" >> >> pjsua_var.mconf->ports[1]->name = "ringback" >> >> pjsua_var.mconf->ports[2]->name = "ring" >> >> pjsua_var.mconf->ports[3]->name = "sip:voip1 at freesipserver.com" >> >> >> >> And it says ports[0] is transmitting to port[3], and port[3] is >> transmitting to ports[0] >> >> >> >> Any answer is highly appreciated, thanks in advance. >> >> >> >> -- >> Khoa Pham >> HCMC University of Science >> Faculty of Information Technology >> >> _______________________________________________ >> Visit our blog: http://blog.pjsip.org >> >> pjsip mailing list >> pjsip at lists.pjsip.org >> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >> >> > > > -- > Khoa Pham > HCMC University of Science > Faculty of Information Technology > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing listpjsip at lists.pjsip.orghttp://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > > > -- Khoa Pham HCMC University of Science Faculty of Information Technology -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130128/1163c2ed/attachment-0001.html>
