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Reply to Delay in Microphone Input When Talking While Receiving Audio in PTT Framework (Full Duplex Mode)

Thank you for the detailed reply. I've submitted a bug report as requested: FB19421676 – Perfect, thank you. It turns out that isVoiceProcessingInputMuted was set to true when starting a transmission, and only reverted to false once audio output stopped. This was the source of the delay between initiating transmission and receiving valid microphone input. Good find! I'm still relatively new to Swift and iOS audio development, and I was wondering if there are any sample projects or best practices that demonstrate integrating audio with the Push-to-Talk framework. No, there isn't any direct sample for it. Practically speaking, the PushToTalk framework was actually created to support an existing set of developers who'd previously built PTT apps using the voip background category and CallKit, so that they could migrate away from the unrestricted PTT entitlement. That's why we didn't create a sample— most of the framework's adopters were integrating the sample into an existing large-scal

Media Technologies Audio

Aug ’25

Reply to Crash when assigning NSImage to `@objc dynamic var` property

Thanks. So it sounds like the NSImage is getting over-released or being incorrectly deallocated, although it's unclear to me what exactly is trying to form a weak reference, since my code (as shown above) has a strong reference. Unfortunately, the higher up function calls are made by AppKit, which is not open source, so I cannot look it up. Seeing that code wouldn't actually help. The thing that makes over-release issues (and most other memory crashes ) hard to debug is that the crash log you’re looking at is NOT why your app crashed. At some earlier point in your app, something happened in your app that caused an extra release that would not normally occur. In other words, what the crash log shows is a victim of an underlying issue, not its direct cause. As far as I understand, the link you posted helps investigating memory issues in Xcode, but since the crash reports are downloaded by Xcode from other users and I cannot reproduce it myself... I should have posted more direct links, but most of the

UI Frameworks AppKit

Aug ’25

Reply to Crash when assigning NSImage to `@objc dynamic var` property

Thanks. So it sounds like the NSImage is getting over-released or being incorrectly deallocated, although it's unclear to me what exactly is trying to form a weak reference, since my code (as shown above) has a strong reference. Unfortunately the higher up function calls are made by AppKit, which is not open source, so I cannot look it up. As far as I understand, the link you posted helps investigating memory issues in Xcode, but since the crash reports are downloaded by Xcode from other users and I cannot reproduce it myself... The Xcode statistics seem to show that it only happens with macOS 15.3 or newer. I don't know if it's because there's not enough space to show older releases, or if it's really a clue that it's a change introduced with macOS 15.3 that causes this issue. From my perspective it would make sense that it's a new issue with macOS 15.3, because I haven't changed the code that generates or assigns that image in a very long time, and this issue didn't happen for a previous version of

UI Frameworks AppKit

Aug ’25

Reply to Can SMAppService Daemon replace SMJobBless for exclusive HID capture from keyboards?

The tricky part here is that, once you start messing around with code running as root, there are multiple TCC databases to contend with, namely the one for your user account and the one for the system as a whole. That complicates matters. Thanks for the insight. I didn't know that! Out of curiosity: would a sudo tccutil reset All com.mycompany.myapp reset the permissions for the app for the root user? So, anyway, lemme clarify your actual setup. It sounds like you’re: Using an IOHIDManager to discover HID devices. That vends you various IOHIDDevice objects. You choose one and call IOHIDDeviceOpen on it. Is that right? I'm doing it a bit differently: Using IOServiceAddMatchingNotification() to look for IOKit services of IOHIDDevice class. Match the properties of the IOKit services/devices I receive in the callback with the properties in the callback. And if it fulfills my criteria, proceed to the next step. Use IORegistryEntryGetRegistryEntryID() to get the registry entry ID for the IOKit service of t

App & System Services Core OS

Aug ’25

AVAssetResourceLoaderDelegate and CoreMediaErrorDomain -12881 When Playing HLS Audio

I am developing an app that plays HLS audio. When using AVPlayerItem with AVURLAsset, can AVAssetResourceLoaderDelegate correctly handle HLS segments? My goal is to use AVAssetResourceLoaderDelegate to add authentication HTTP headers when accessing HLS .m3u8 and .ts files. I can successfully download the files, but playback fails with errors. Specifically, I am observing the following cases: A. AVAssetResourceLoaderDelegate is canceled, and CoreMediaErrorDomain -12881 occurs In NSURLConnectionDataDelegate’s didReceiveResponse method, set contentInformationRequest In didReceiveData, call dataRequest respondWithData resourceLoader didCancelLoadingRequest is called CoreMediaErrorDomain -12881 occurs B. CoreMediaErrorDomain -12881 occurs In NSURLConnectionDataDelegate’s didReceiveResponse method, set contentInformationRequest In connection didReceiveData, buffer all received data until the end In connectionDidFinishLoading, pass the buffered data to respondWithData Call loadingRequest finishLoading CoreM

Media Technologies Streaming AVFoundation

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95

Aug ’25

Timer app which works in background mode

I am developing multi timer app which works in background mode. at first, I could go multi timer in background mode using background mode 'audio' which uses slient wav file. However, app has rejected background mode 'audio' should not use which not for audio app. I want to know how to develop timer app which works in background mode in ios platform. native ios timer that let us alarmed time. so I want develop that kind of app Sincerely,

App & System Services General

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42

Aug ’25

Reply to VoIP Entitlement

Ideally, we would like calls to be delivered even when the app is completely closed or after the device is restarted. As I understand it, this may require obtaining VoIP permissions; otherwise, calls may only work when the app is open or running in the background. That understanding is incorrect. Voip apps do NOT require special authorization in order to function. All any voip app require to functions is including the two UIBackgroundModes: voip-> This allows an app to receive voip pushes through PushKit and use CallKit to report and manage the call interface. audio-> This allows the app to use the audio system in the background. In Xcode, both of these are configured through the Background Modes capability section. That section labels them: Voice over IP -> voip Audio, AirPlay, and Picture in Picture -> audio CallKit has a sample app Speakerbox which fully demonstrates all of this. It works as a standalone calling app by looping audio (to fake call inp

Code Signing Entitlements

Aug ’25

Reply to Crash in Swift 6 when using UNUserNotification

@Engineer Thanks for reply. Some more crash info. On simulator (did not test on device at this stage). Here is crash report: Error occurs in #4 notifyMe IBAction @IBAction func notifyMe(_ sender: UIButton) { let center = UNUserNotificationCenter.current() center.delegate = self center.getNotificationSettings(completionHandler: { (settings) in if settings.authorizationStatus == .notDetermined { center.requestAuthorization(options: [.alert, .sound, .badge]) { (granted, error) in DispatchQueue.main.async { if !granted { // Alert user } } } } else if settings.authorizationStatus == .denied { DispatchQueue.main.async { // Alert user } } else if settings.authorizationStatus == .authorized { DispatchQueue.main.async { self.alarmButton.isHidden = self.duree <= 120 } } }) var alertStyle = UIAlertController.Style.alert let alertController = UIAlertController( title: NSLocalizedString(M'avertir, comment: ), message: NSLocalizedString(Attention, comment: ), preferredStyle: alertStyle) var title = NSLocalizedS

App & System Services Notifications

Aug ’25

CallKit blocked call remains Missed Calls

I’m currently developing a spam number blocking app using CallKit. I’ve confirmed that up to iOS 26 beta 5, there is a bug where number blocking doesn’t work. In my current tests, the ringtone doesn’t sound and the blocking works fine, but the call still appears in the missed calls list, which is bothersome. If the bug is fixed in future versions (as it was in previous versions), is there a way to block the number so that it also does not appear in missed calls?

App & System Services General CallKit

4

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108

Aug ’25

Properly Implementing “Open Recent” Menu for a SwiftUI non Document-Based macOS Music Player

I've already searched extensively on Apple Developer Forums and Stack Overflow, and didn't really find what I need or I missed it. I'm developing a macOS music player app that uses cuesheet files paired with audio files. The core functionality is working, opening and playing files works without issues, but I'm struggling with implementing proper file handling features due to my limited experience with UI frameworks. The current state of my app is intentionally simple: Single window interface representing a music player with track list Opening cuesheet files changes the “disc” and updates the window Built with SwiftUI (not AppKit) Not created as a Document-Based app since the user doesn't need to edit, save, or work with multiple documents simultaneously What I Need to Implement: Open Recent menu that actually works Recent files accessible from Dock menu Opening cuesheet files from Finder Drag-and-drop cuesheet files onto app window (lower priority) Problems I've Encountered: I've tried multiple appro

UI Frameworks SwiftUI File Provider

2

0

82

Aug ’25

Disabling Dolby Atmos MAT2.0 with an Apple TV 4k 3rd gen 128gb OS26

I have an Apple TV 4k 3rd gen 128gb model connected to a downstream device that is compatible with all surround sound formats except object-based ones like DTS:X, Dolby Atmos and Dolby Atmos MAT2.0 . However, I would still like to have the highest possible audio output from the Apple TV 4k and not have to downgrade to the lossy Dolby 5.1 or stereo options when playing back content with Atmos audio (only that is affected since all other non-object-based audio is output without any problems since the problem arises from the MAT2.0 encoding for Atmos content which my downstream device is not able to decode). Please let me know if I missed a setting that can resolve my problem and otherwise please either consider adding the option or including me in the closed beta for the Apple TV OS26 since I heared that an option for audio-passtrough is in the works. Many thanks already in advance!

Community Apple Developers Apple TV tvOS

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31

Aug ’25

Audio clipping - macOS Tahoe 26 - Beta 5

I was testing audio playback from YouTube in Safari, and the sound was clipping heavily. At first, I thought it might be due to the poor quality of my small sound system. However, when I took a screenshot and the screenshot sound effect itself produced a loud clipping noise, it became clear that this is not a mechanical problem with my speakers, nor an issue specific to YouTube or Safari. This appears to be a system-wide audio issue in macOS Tahoe 26 - Beta 5.

Media Technologies Audio Beta macOS Safari

1

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240

Aug ’25

Reply to Unexpected AVAudioSession behavior after iOS 18.5 causing audio loss in VoIP calls

We’d like to confirm if there have been any recent changes in AVAudioSession, CallKit, or related media handling that could affect audio input behavior during long-running calls. The system is always changing, but I'm not aware of any specific change or issue which matches what you're describing. There is the issue (and workaround) described here, however, that wouldn't happen mid-call. __ Kevin Elliott DTS Engineer, CoreOS/Hardware

Media Technologies Audio

Aug ’25

Reply to SpeechTranscriber extremely slow (14+ seconds) despite proper locale allocation and optimization

This may be an interaction with Swift's new approachable concurrency feature, which wasn't in play during the development of the sample app. If approachable concurrency is enabled, then the application may not be processing and displaying results in parallel as expected. Instead, it may be doing both on the main actor, and therefore waiting for the entire audio file to finish processing before displaying any results. If so, you can resolve the issue by either turning off approachable concurrency, or by marking certain methods as @concurrent.

Media Technologies Audio

Aug ’25

Reply to Can SMAppService Daemon replace SMJobBless for exclusive HID capture from keyboards?

[quote='852554022, felixs, /thread/795686?answerId=852554022#852554022, /profile/felixs'] I wasn't able to use VMs for testing here as I couldn't find a way to make a HID device connected to the host owned by the guest. [/quote] Ah, yeah, that’s a pain. Virtualization framework doesn’t support USB device access, so any VM app based on that is similarly limited. [quote='852554022, felixs, /thread/795686?answerId=852554022#852554022, /profile/felixs'] I also tried resetting TCC for my app [/quote] The tricky part here is that, once you start messing around with code running as root, there are multiple TCC databases to contend with, namely the one for your user account and the one for the system as a whole. That complicates matters. So, anyway, lemme clarify your actual setup. It sounds like you’re: Using an IOHIDManager to discover HID devices. That vends you various IOHIDDevice objects. You choose one and call IOHIDDeviceOpen on it. Is that right? Are you passing in kIOHIDOptionsTypeSeizeDevice? Share

App & System Services Core OS

Aug ’25

Popping Sound

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