You should just be able to call AudioSessionSetActive(true); at the app level on important call events. Doing it too often is not a problem.
That said, since pjsip's audio session handling is not appropriate for an iOS app to begin with (it is not a well-behaved, peacefully co-existing background app for long-term usage), we just moved all audio session configuration, initialization, and event handling into our app. Only the Audio Units should be managed within pjsip.
Then we:
- initialize the audio session only once, on app launch
- set playandrecord mode
- override allow mixing
- allow bluetooth
- set active
Then the callbacks can be used at the app level; you still won't always get the endInterruption call, but you can set the session active when needed as a workaround.
On Tuesday, June 12, 2012 at 5:09 AM, Cataldo Silvia wrote:
> Hi Michael,
> thanks for your reply!
>
> Yes from debugging I saw that the endInterruption is not called always: (
> And in fact this is my issue?. How can I know from pjsip that the interruption begun? There is no callback from pjsip about this state? and how can I tell to pjsip to recover audio?
>
> Thanks,
> Silvia
>
>
> On Jun 12, 2012, at 12:51 PM, Michael Fortson wrote:
> > There's no guarantee you will receive an endInterruption call (it is often skipped depending on the situation); it's better to use application states and just reactivate the audio session anytime you need it. Extra setActive:YES calls are for audioSession not harmful.
> >
> >
> > Cheers,
> > Michael
> >
> >
> > On Monday, June 11, 2012 at 1:56 AM, Cataldo Silvia wrote:
> >
> > > Hi EveryBody,
> > > I'm using pjsip to implement a VoIP application on iOS and I am facing a weird issue.
> > >
> > > While pjsip is correctly recovering audio if interrupted by a GSM Call, it does not recover correctly if the VoIP call is interrupted by a multimedia file, let's say youtube video for example.
> > >
> > > The problem is that (from the log) I can see that pjsip correctly receives the BeginInterruption notification but does not receive the EndInterruption.
> > >
> > > Is this a known issue?
> > >
> > > Or there is something I have to implement in my application in order to manage this scenario?
> > > In addition, how can the app being notified by pjsip of the interruption in order to put on hold the VoIP call?
> > >
> > > Please note that the GSM call interruption is correctly handled, so I already put in my app the following lines of code:
> > >
> > >
> > > - (BOOL) canBecomeFirstResponder {
> > > return YES;
> > > }
> > >
> > > -(void) viewDidAppear:(BOOL)animated
> > > {
> > > [super viewDidAppear:animated];
> > > [[UIApplication sharedApplication]
> > > beginReceivingRemoteControlEvents];
> > > [self becomeFirstResponder];
> > > }
> > >
> > >
> > >
> > > Thanks a lot in advance!
> > >
> > > Silvia
> > >
> > >
> > >
> > >
> > >
> > >
> > > Silvia Cataldo
> > >
> > >
> > > Via Cardinal Massaia, 83
> > > 10147 - Torino - ITALY
> > > phone: +39 011 29100
> > > s.cataldo at reply.it
> > > www.reply.it
> > >
> > >
> > >
> > >
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