Enhance voice communication with Push to Talk

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Discuss the WWDC22 Session Enhance voice communication with Push to Talk

Posts under wwdc2022-10117 tag

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Push to talk Framework and Audio Session

I am receiving a push through "incomingPushResultForChannelManager" of Push to talk Framework and setting a remote participant through "pushResultForActiveRemoteParticipant" or setting a remote participant using "setActiveRemoteParticipant" directly in the PTT App without receiving a push. When the app establishes a remote participant on a channel, an Audio Session is started anew and will receive an active Audio Session. The problem is that the time to activate this Audio Session is not short. For this reason, there are many cases where the first part of the other party's voice passes without being played. Also, if the app is running in the foreground, even if it doesn't acquire a new audio session, it can play the voice through the app's own audio session. However, by restarting the Audio Session, the Audio Session is changed unnecessarily and the voice playback is delayed. Question. Can I set the Audio Session to not change when setting the remote participant's information? If this is not possible, please advise on a solution for the case where the audio session is activated after the voice starts to be received.
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by IpageonAppDev.
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Source code for Push To Talk demo app?

I was just watching the Enhance voice communication with Push To Talk WWDC22 session video and was wondering (a few questions) -- (1) (when) will you be making the demo app available that was shown at the beginning of the video? (2) There was some detail given regarding the new APNs push type ("pushtotalk"), but it was unclear to me if that's something I need to handle manually, or if those will be sent automatically when I do channelManager.requestBeginTransmitting? (3) How does the audio data itself get routed around? Is that handled by the system between the requestBeginTransmitting and stopTransmitting calls? Or somehow part of the APNs payload? Or something we must handle? Thank you! thanks!!
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by drewster.
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PushToTalk Backend Requirements

I'm looking to see if someone could point me in the right direction in terms of understanding what's needed for to host a backend server for the new Push To Talk API. Additionally, I'm curious to know what type of latency times people are getting. We've ran a mumble server which unfortunately had a considerable amount of latency.
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by hallux.
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I cannot Configure our audio session and begin recording

hi , trying to call begin transmission method by System UI, but I cannot wait for the framework to call this method  func channelManager(   _ channelManager: PTChannelManager,   didActivate audioSession: AVAudioSession ) If this method cannot callback, I cannot Configure our audio session and begin recording, I don’t know how to that?
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by robbinlee.
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Push To Talk first recording bug

How to reproduce: Launch ptt app join channel call requestBeginTransmitting in delegate method didActivate audioSession prepare AVAudioRecorder and call record Error: AVAudioRecorder.record() returns false If I reinstantiate and run AVAudioRecorder.record() right away then it returns true. It happens only on first audio recording after app launch.
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by alex1704.
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pushtotalk is not a valid value for apns-push-type in Firebase cloud messaging

Hello, we are unable to use the ios push to talk framework using cloud messaging. it says that Error: Invalid [apns-push-type] set for apns platform. IOS manual says that the push type to be set to pushtotalk. but thsi s not allowed in messaging().send(message) const message = { notification: { title: 'test' }, apns: { headers: { 'apns-push-type': 'pushtotalk', 'apns-topic': ***.***.***.voip-ptt', 'apns-priority' : '10', 'apns-expiration' : '0' }, payload: { aps: { 'mutable-content': 1 } }, fcm_options: { } }, webpush: { headers: { } }, topic: topicval
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by tazan.
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