Re: Video Call In Background

Vedvyas Rauniyar <vedvyas.rauniyar@xxxxxxxxxxx> · Mon, 17 Jul 2017 12:31:29 +0530

Hi Oren,
I made a call from linphone mac application to iPhone device in foreground and video was showing at both end (Linphone and iPhone) but when I made the same call from linphone mac application to iPhone in background, I picked up the call and app was moved from background to foreground. Audio was working fine on both end but no video is displayed either iPhone side or Linphone mac app side.

I am getting the below error -

15:48:19.250    pjsua_vid.c  ......Creating video window: type=stream, cap_id=-1, rend_id=0
15:48:19.250     vid_port.c  .......Opening device OpenGL renderer [OpenGL] for render: format=I420, size=656x656 @22:1 fps
15:48:19.251 ios_opengl_dev  .......Failed to initialize iOS OpenGL because we are in background
15:48:19.251     vid_port.c  .......Closing OpenGL renderer..
15:48:19.319    pjsua_vid.c  .......Window 0: destroying..
15:48:19.319  pjsua_media.c  ....pjsua_vid_channel_update() failed for call_id 0 media 1: video subsystem not initialized (PJMEDIA_EVID_INIT)
15:48:19.319  pjsua_media.c  ....Error updating media call00:1: video subsystem not initialized (PJMEDIA_EVID_INIT)
15:48:19.319    pjsua_app.c  ...Call 0 media 0 [type=audio], status is Active
15:48:19.319    pjsua_aud.c  ...Conf connect: 3 --> 0
15:48:19.319    pjsua_app.c  ....Turning sound device ON
15:48:19.319   conference.c  ....Port 3 (sip:linchpin@192.168.1.7) transmitting to port 0 (Master/sound)
15:48:19.319    pjsua_aud.c  ...Conf connect: 0 --> 3
15:48:19.319   conference.c  ....Port 0 (Master/sound) transmitting to port 3 (sip:linchpin@192.168.1.7)
15:48:19.319    pjsua_app.c  ...Call 0 media 1 [type=video], status is Error
15:48:19.319    pjsua_app.c  ...Just rejected incoming video offer on call 0, use "vid call enable 1" or "vid call add" to enable video!
15:48:19.319   pjsua_core.c  ....TX 1321 bytes Response msg 200/INVITE/cseq=20 (tdta0x10494b000) to UDP 91.121.209.194:5060:

On Wed, Jul 12, 2017 at 4:15 PM, Vedvyas Rauniyar <vedvyas.rauniyar@xxxxxxxxxxx> wrote:
 Hello ,

I am working on PJSIP. Audio and video call is working fine in foreground but the issue is, When the app is in background, I am able to make call in background but no video is displaying. Any help would be highly appreciated.

When I make a call and pick the call from background, I am getting the errors -

15:48:19.250    pjsua_vid.c  ......Creating video window: type=stream, cap_id=-1, rend_id=0
15:48:19.250     vid_port.c  .......Opening device OpenGL renderer [OpenGL] for render: format=I420, size=656x656 @22:1 fps
15:48:19.251 ios_opengl_dev  .......Failed to initialize iOS OpenGL because we are in background
15:48:19.251     vid_port.c  .......Closing OpenGL renderer..
15:48:19.319    pjsua_vid.c  .......Window 0: destroying..
15:48:19.319  pjsua_media.c  ....pjsua_vid_channel_update() failed for call_id 0 media 1: video subsystem not initialized (PJMEDIA_EVID_INIT)
15:48:19.319  pjsua_media.c  ....Error updating media call00:1: video subsystem not initialized (PJMEDIA_EVID_INIT)
15:48:19.319    pjsua_app.c  ...Call 0 media 0 [type=audio], status is Active
15:48:19.319    pjsua_aud.c  ...Conf connect: 3 --> 0
15:48:19.319    pjsua_app.c  ....Turning sound device ON
15:48:19.319   conference.c  ....Port 3 (sip:linchpin@192.168.1.7) transmitting to port 0 (Master/sound)
15:48:19.319    pjsua_aud.c  ...Conf connect: 0 --> 3
15:48:19.319   conference.c  ....Port 0 (Master/sound) transmitting to port 3 (sip:linchpin@192.168.1.7)
15:48:19.319    pjsua_app.c  ...Call 0 media 1 [type=video], status is Error
15:48:19.319    pjsua_app.c  ...Just rejected incoming video offer on call 0, use "vid call enable 1" or "vid call add" to enable video!
15:48:19.319   pjsua_core.c  ....TX 1321 bytes Response msg 200/INVITE/cseq=20 (tdta0x10494b000) to UDP 91.121.209.194:5060:

Code Snippet is -

#define KEEP_ALIVE_INTERVAL 600

- (void)keepAlive {

    static pj_thread_desc a_thread_desc;
    static pj_thread_t *a_thread;
    int i;

    if (!pj_thread_is_registered()) {
        pj_thread_register("ipjsua", a_thread_desc, &a_thread);
    }

    /* Since iOS requires that the minimum keep alive interval is 600s,
     * application needs to make sure that the account's registration
     * timeout is long enough.
     */
    for (i = 0; i < (int)pjsua_acc_get_count(); ++i) {
        if (pjsua_acc_is_valid(i)) {
            pjsua_acc_set_registration(i, PJ_TRUE);
        }
    }
}

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