Archive for the 'Porting' Category

pjsip for BlackBerry PlayBook: Native SIP client may be closer than you think

Published 23 July 2011 Mobile VoIP , pjsip , Porting , SIP Client , smartphone 2 Comments
Tags:

One of the most frequently ask questions we got is: does pjsip support BlackBerry? Are there plans to do so?

We always answered no, because the current BlackBerry devices only supports Java and even then there seem to be lack of multimedia access (essential for audio/video capture and playback) and direct socket access (for media streaming).

Recently however, with the BlackBerry Playbook using a different operating system, they have also announced that native C/C++ development kit will be available later this year.

So, maybe it will be not long now until we can answer ‘Yes’. Well, at least it can run on the BlackBerry PlayBook, if not all their smartphones.

Native iPhone SIP Client Based on pjsip Available on App Store: Open Source and Not Tied to any Provider

Published 19 February 2009 pjsip , Porting 15 Comments
Tags: , , , , , , , , , ,

pjsip on has been running on iPhone and iPod Touch for quite a while. Samuel Vinson (also responsible for making possible VoIP on Nintendo DS) was the first to announce a successful port to iPhone and iPod Touch even before the official SDK became available.

Siphon has already been available for developers and also on Cydia, an alternative distribution platform for iPhone applications. voiphone is another project starting up, based on sound device code from Siphon.

Now another milestone is reached, because an iPhone softphone called SipPhone on iPhone (how many phones can you have in a sentence!), has been released on the official App Store by VNet Corp of Shanghai. This means users unable or unwilling to install Cydia are also able to enjoy VoIP over Wi-fi with their favourite providers, instead of dictated by which client you use.

(For those reading on a computer with iTunes or on the iPhone itself here is the direct link to SipPhone on App Store.)

So how does it work? After downloading from App Store, following the installation instructions, I was able to add Teluu’s sipgate.co.uk account (look, No SIM!):

Main SIP account settings

Additional SIP account settings (optional)

I was then able to choose from my Contacts and make a call as normal. I didn’t do any extensive voice quality testing, just some quick calls. I will try to record some conversations to illustrate better the voice quality.

Another feature that needs pointing out is the ability to have multiple accounts. It was quite easy to toggle which account is active at any one time. The pjsip.org SIP domain uses OpenSER OpenSIPS, so I know this client is compatible with it.

Multiple accounts support for the iPhone SIP client

Multiple accounts support for the iPhone SIP client

The source of the application is available at their forum, it seems you can get it even if you are not a customer. This is beyond the requirements of the GPL, so nice touch on VNET Corp people.

I still haven’t been unable to compile it, so as can be seen I have a question pending there.

Overall of course the main issue of VoIP over wi-fi in iPhone remains: no background task. That means, unlike other mobile devices such as Nokia which uses Symbian, it cannot receive any calls while you are doing something else.

 

Let me know your comments if you have tried this iPhone SIP client.

Integrating yaSSL with pjsip: anyone interested?

Published 19 January 2009 Open Source , pjsip , Porting 2 Comments

Recently we’ve been in contact with the yaSSL open source SSL project, discussing possibility of supporting CyaSSL as well as the current OpenSSL.

yaSSL

yaSSL is a small footprint and portable SSL implementation

The small footprint and portability of CyaSSL seems a very good match, so anyone interested in kickstarting this? I guess this can be from both ends, so maybe a  yaSSL community member can try to see the TLS functionality in pjsip/pjmedia or from the pjsip side, looking into yaSSL stuff.

Let me know if you’re interested, and we can take it from there.

Rich Internet Telephony Application, Anyone?

Published 4 December 2008 Porting , Technology , VoIP 1 Comment
Tags: , , , , , ,

pjsip has always been cross-platform, basically it runs anywhere. Moreover,
we interpreted platform liberally, so in addition to multiple operating
systems and processor, we also have runtimes-as-a-platform (RaaP?) like
the Python VoIP API support (and the community has expanded along this line to Java SIP API and C# SIP SDK).

There is a new breed of platform coming to the desktop, broadly called Rich
Internet Application (RIA). Names like Microsoft Silverlight, Adobe AIR,
Sun JavaFX have been wading in this area. On my desktop I got Twhirl, a
Twitter client built on top of AIR.

So is this platform going to be relevant to SIP clients, I wonder? Would it
fit into a IP phone developer’s strategy? Is a RIA softphone possible or
even desirable? Would we call these things Rich Internet Telephony
Applications (RITA)?

Click your thoughts on the poll below and let me know what you think! (UPDATE: The poll application seems to be not working for some people – here is the direct link to the: Rich Internet Telephony Application Poll)

PJSIP on Symbian Phone Works

Published 16 January 2008 HowTo , Mobile VoIP , Open Source , Porting , smartphone , Symbian , VoIP 10 Comments
Tags: ,

[pjsip] PJSIP on Symbian Phone Works!:

This announcement is a bit late than planned (I promised to finish the Symbian port before Jan 2008), but we thought we’d give this a more thorough testing before announcing it, hence the delay.

In summary, PJSIP works and tested on Symbian S60 3rd Ed phone. Everything should work, including all SIP features, sound, STUN, and ICE. And we’ve made a tutorial on how to build and debug PJSIP on target device.

There have been some major changes along the way:

  • Carbide is now the preferred IDE rather than CodeWarrior. This is because CW has been deprecated by Nokia anyway.
  • Support for DSO is no longer enabled by default. It’s still supported, but you’d have to edit the MMP files slightly to build DSO outputs.

So what’s left to be done is for someone to create a nice open source Symbian softphone GUI on top of it. ;-)

For more info:

pjmedia Running on iPod Touch: Good news for Open Source

Published 20 December 2007 Porting , Technology , VoIP 2 Comments
Tags: , , , ,

The buzz on making phone calls from iPod Touch using software based on pjsip/pjmedia is picking up steam. Engadget, Tom Keating, even Andy Abramson of VoIP Watch has picked it up.

pjmedia is now up and running (screenshot courtesy of Touchmods):

pjmedia on iPod Touch screenshot

The imminent release of the software is also mentioned.

Because the developers are using pjsip and pjmedia under GPL that means the software is free and open source, and will be available to everyone! I am sure Matt Asay, recently posting about Apple and open source would be proud :)

VoIP on iPod Touch

Published 10 December 2007 pjsip , Porting , Technology , VoIP Closed
Tags: ,

eok did manage to make the Nintendo DS-based SIP app from Samuel running on the iPod Touch!!

VoIP confirmed!!! « iPod Touch Mods

After Nintendo DS, here is another pjsip port along the lines of VoIP on Consumer Devices product line: internet telephony on the iPod Touch. It needs a hardware modification to make activate the microphone though, so definitely not for the faint of heart!

Embedded RTP under µClinux on Nios2

Published 21 November 2007 pjmedia , Porting , uClinux 1 Comment
Tags: , , , , ,

I’m working on an application with PJMEDIA under uClinux on Nios2 environment. I have a stream audio with codec L16 48000 stereo and mono.This works good.

[pjsip] Resampling module add

It’s good to hear pjsip and pjmedia being ported on different embedded systems. The quote above relates to Nios II from Altera. Nowadays, running a media stacks such as RTP is very important for embedded processors such as Nios2.

If you have any other experience in using our protocol stacks on other embedded devices, please feel free to share it!

Making VoIP on Nintendo DS a reality: new open source SIP client available

Published 15 September 2007 Mobile VoIP , Nintendo DS , Open Source , pjsip , Porting , Technology 18 Comments
Tags: ,

SvSIP, a new VoIP client for Nintendo DS is making quite a stir! To name a few, Tom Keating, Engadget and Gizmodo also picked it up.

Congratulations are certainly in order for Samuel Vinson, for porting pjsip to Nintendo DS. I am going to try it out myself, as soon as I reconfigure my wi-fi back to WEP. (Update: Here’s my post on using pjsip on Nintendo DS)

And instead of a screen-shot, I’m going to give you one better: a complete video guide! (video created by therealbiglou) It demonstrates how to set it up, with final thoughts: “sound quality is very good”. The negatives include “low speaker volume” and “hard interface to follow”.

We’ll work with Samuel to tweak the volume The volume can now be controlled through a configuration setting, and regarding the interface… yeah I guess dumping a log file on screen is a million miles away from an iPhone! Oops I mentioned the i-word, I’m sure people will think it’s there for keyword stuffing.

But seriously, some comments on digg already saying it’s an “iPhone killer”. What do you think?

Open source SIP stack, media, STUN, and ICE for Symbian OS

Published 4 May 2007 Embedded , Mobile VoIP , NAT traversal , Open Source , pjmedia , pjnath , pjsip , Porting , smartphone , Symbian , VoIP 1 Comment
Tags: , , , ,

Just yesterday I finished back porting the Symbian branch to the trunk, and I think it’s good to go.

It’s been a roller-coaster way, supporting Symbian. It’s not the most developer friendly OS to port your programs to (see Readers Write about Symbian, OS X, and the iPhone), but we knew that, and I felt that this should make a good challenge for PJLIB, to see if it lives to its extreme portability claim. So we first started the port on May 2006, created a Symbian branch based on 0.5.5.6, and estimated that the work will need couple of months work. It wasn’t long before we realized we needed more time, and we revised the target to September 2006. But we still missed the target anyway.

Only about two months later, on Nov 2006, where we really had all of the libraries ported (only sound device is missing). But by this time, this branch was lagging waay behind the trunk, so it will take significant efforts (and commitments) to bring the port into the trunk.

But finally we had gathered enough “motivations” to do this, few days back, and it’s here.

Symbian target is officially supported in the trunk. All libraries have been ported. All seems to be running fine. No more panics. No memory leaks. All is good to go. Sound device is still missing, unfortunately.

So what do we have for the Symbian port again? For those new to PJSIP projects, here’s all of them:

  • pjlib, our platform abstraction hero.
  • pjlib-util, an auxiliary library containing parts needed by upper layer libraries (things like text scanning, XML, DNS SRV resolution, and various encryption algorithm),
  • pjnath, a NAT helper library containing the latest STUN, TURN, and ICE,
  • pjmedia, the media stack,
  • pjsip, pjsip-ua, pjsip-simple, libraries containing the bunch of SIP features,
  • pjsua-lib, a library combining SIP, media, and DNS SRV/STUN/ICE into high level API, and
  • symbian_ua, a simple console based SIP user agent for Symbian, based on pjsua-lib.

Some screenshot? Sure:

SIP User Agent on Symbian Emulator

Screenshot of symbian_ua on S60 Emulator

It’s been fun programming on Symbian. Learning curve has been steep. The tools are not perfect. But now I think I’m relatively more comfortable with it, and it becomes just another target for coding.

For more information about using the Symbian port, please see Porting PJ to Symbian OS. The porting effort itself is tracked on this Symbian-Porting Trac page.

Have fun yourself!

Next Page »

Follow on

Subscribe to blog updates

By email

RSS

RSS

Download pjsip

pjsip licensing

View Perry Ismangil's profile on LinkedIn

a

Clicky
Follow

Get every new post delivered to your Inbox.