How to know whether its a audio or video call?

[itsazzad]

How to know whether the caller requested a video/audio call?
Or, How to know the remote media constraint?

[ramneekhanda]

did you get an answer for this? we are currently using react native xmpp with ejabberd for chat and would like to use the same connection for call init and negotiations..

[itsazzad]

I had solved in a very much hacky way but I still hope that there having a better way:

            localMedia.start({
                mirror: true,
                audio: true,
                video: true,
            }, (err, stream) => {
                    session.addStream(localStream);
                    session.start();

                    if (!call.audio) {
                        localMedia.mute();
                    }
                    if (!call.video) {
                        localMedia.pauseVideo();
                    }

            });
        },

You can see that I am starting the call with both of audio and video media enabled and later after starting the session I am turning off Audio/Video.
So here I am starting the callee session similarly:

        client.on('jingle:incoming', (session, arg1) => {
            if (!session.isInitiator) {
                localMedia.start({
                    mirror: true,
                    audio: true,
                    video: true,
                });
            }
        });

And then the callee UI is getting the signal of Audio/Video off and turning off its Audio/Video accordingly for the very first time:

const callerMediaChangeCount = {
    audio: 0,
    video: 0,
};
function needCalleePrecedingMediaAction(mediaType, session) {
    return callerMediaChangeCount[mediaType] <= 1 && !session.isInitiator && session.connectionState === 'starting' && session.state === 'pending';
}

        client.on('jingle:mute', (session, arg1) => {
            callerMediaChangeCount.audio += 1;

            if (needCalleePrecedingMediaAction('audio', session)) {
                session.mute();
            }
        });
        client.on('jingle:unmute', (session, arg1) => {
            callerMediaChangeCount.audio += 1;

            if (needCalleePrecedingMediaAction('audio', session)) {
                session.unmute();
            }
        });
        client.on('jingle:hold', (session, arg1) => {
            callerMediaChangeCount.video += 1;

            if (needCalleePrecedingMediaAction('video', session)) {
                session.hold();
            }
        });
        client.on('jingle:resumed', (session, arg1) => {
            callerMediaChangeCount.video += 1;

            if (needCalleePrecedingMediaAction('video', session)) {
                session.resume();
            }
        });