I created a locked camera capture extension as explained in Apple's documentation. I'm trying to explore the possibilities of using a bluetooth peripheral from that extension - anybody knows if this is possible? The CBCentralManagerDelegate reports .unsupported in func centralManagerDidUpdateState, even if I have provided all the permissions in Info.plist.

So I have been using the iOS 18 beta and I would like to say first and foremost really great update I love the timed messages and the car Sickness stuff that’s awesome but my only problem with the update is screen time. I have screen time on my phone and when I updated to iOS 18 beta I can’t seem to claim more screen time. I have my screen time to where I can ignore it once I run out But in the new update I can seem press the button all I want but It wont give me more screen time. This Is what I imagine a minor fix and I would really appreciate if this was fixed soon. But other than that small detail Amazing update love what your doing over here at apple!

I am calling AVSampleBufferDisplayLayer.flush from a background queue but this seems to occasionally crash the app. I am calling it from the same thread I pass to - (void)requestMediaDataWhenReadyOnQueue:(dispatch_queue_t)queue usingBlock:(void (^)(void))block;. My question is, is this API threadsafe, or do I need to call flush from the main thread? Or is there another issue that I am not considering? It seems strange to me that this API would trigger an autolayout pass. 0 CoreFoundation 0x00000001bb384e38 __exceptionPreprocess + 164 1 libobjc.A.dylib 0x00000001b451b8d8 objc_exception_throw + 59 2 CoreAutoLayout 0x00000001d7e09e84 _AssertAutoLayoutOnAllowedThreadsOnly + 327 3 CoreAutoLayout 0x00000001d7e00e60 -[NSISEngine withBehaviors:performModifications:] + 35 4 UIKitCore 0x00000001be58fd40 -[UIView _postMovedFromSuperview:] + 671 5 UIKitCore 0x00000001bd56dfec -[UIView(Internal) _addSubview:positioned:relativeTo:] + 1903 6 UIKitCore 0x00000001bda57ccc -[_UITextLayoutCanvasView textViewportLayoutController:configureRenderingSurfaceForTextLayoutFragment:] + 455 7 UIFoundation 0x00000001c588bc9c __48-[NSTextViewportLayoutController layoutViewport]_block_invoke_4 + 151 8 UIFoundation 0x00000001c5836b50 __80-[NSTextLayoutManager enumerateViewportElementsFromLocation:options:usingBlock:]_block_invoke + 43 9 UIFoundation 0x00000001c580e158 __83-[NSTextLayoutManager enumerateTextLayoutFragmentsFromLocation:options:usingBlock:]_block_invoke_2 + 535 10 CoreFoundation 0x00000001bb385350 __NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__ + 23 11 CoreFoundation 0x00000001bb3b24dc -[__NSSingleObjectArrayI enumerateObjectsWithOptions:usingBlock:] + 91 12 UIFoundation 0x00000001c580de28 __83-[NSTextLayoutManager enumerateTextLayoutFragmentsFromLocation:options:usingBlock:]_block_invoke + 775 13 UIFoundation 0x00000001c57f7504 -[NSTextLayoutManager enumerateTextLayoutFragmentsFromLocation:options:usingBlock:] + 659 14 UIFoundation 0x00000001c57f7264 -[NSTextLayoutManager enumerateViewportElementsFromLocation:options:usingBlock:] + 99 15 UIFoundation 0x00000001c57f6d7c -[NSTextViewportLayoutController layoutViewport] + 1299 16 UIKitCore 0x00000001bd580a3c +[UIView(Animation) performWithoutAnimation:] + 75 17 UIKitCore 0x00000001bd5582d0 -[_UITextLayoutCanvasView layoutSubviews] + 139 18 UIKitCore 0x00000001bd5544c8 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1979 19 QuartzCore 0x00000001bca277fc CA::Layer::layout_if_needed(CA::Transaction*) + 499 20 QuartzCore 0x00000001bca3aeb0 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 147 21 QuartzCore 0x00000001bca4c234 CA::Context::commit_transaction(CA::Transaction*, double, double*) + 443 22 QuartzCore 0x00000001bca81630 CA::Transaction::commit() + 651 23 MediaToolbox 0x00000001ca8d0da0 videoQueueRemote_SetProperty + 367 24 AVFCore 0x00000001cad191b4 __63-[AVSampleBufferVideoRenderer _setContentLayerOnFigVideoQueue:]_block_invoke + 179 25 libdispatch.dylib 0x00000001c299cf88 _dispatch_client_callout + 19 26 libdispatch.dylib 0x00000001c29ac574 _dispatch_lane_barrier_sync_invoke_and_complete + 55 27 AVFCore 0x00000001cad190d0 -[AVSampleBufferVideoRenderer _setContentLayerOnFigVideoQueue:] + 167 28 AVFCore 0x00000001cad14674 -[AVSampleBufferVideoRenderer _createVideoQueue:errorStep:] + 195 29 AVFCore 0x00000001cad14ac8 -[AVSampleBufferVideoRenderer createVideoQueue:] + 55 30 AVFCore 0x00000001cad179cc -[AVSampleBufferVideoRenderer flushWithRemovalOfDisplayedImage:completionHandler:] + 439 31 App 0x0000000102370214 -[AVSampleBufferDisplayLayer flush] + 51

Hello, Faced with a really perplexing issue. Primary problem is that sometimes I get depth and video data as expected, but at other times I don't. And sometimes I'll get both data outputs for a 4-5 frames and then it'll just stop. The source code I implemented is a modified version of the sample code provided by Apple, and interestingly enough I can't re-create this issue with the Apple sample app. So wondering what I could be doing wrong? Here's the code for setting up the capture input. preferredDepthResolution is 1280 in my case. I'm running this on an iPad Pro (6th gen). iOS version 17.0.3 (21A360). Encounter this issue on iPhone 13 Pro as well. iOS version is 17.0 (21A329) private func setupLiDARCaptureInput() throws { // Look up the LiDAR camera. guard let device = AVCaptureDevice.default(.builtInLiDARDepthCamera, for: .video, position: .back) else { throw ConfigurationError.lidarDeviceUnavailable } guard let format = (device.formats.last { format in format.formatDescription.dimensions.width == preferredWidthResolution && format.formatDescription.mediaSubType.rawValue == kCVPixelFormatType_420YpCbCr8BiPlanarFullRange && format.videoSupportedFrameRateRanges.first(where: {$0.maxFrameRate >= 60}) != nil && !format.isVideoBinned && !format.supportedDepthDataFormats.isEmpty }) else { throw ConfigurationError.requiredFormatUnavailable } guard let depthFormat = (format.supportedDepthDataFormats.last { depthFormat in depthFormat.formatDescription.mediaSubType.rawValue == kCVPixelFormatType_DepthFloat16 }) else { throw ConfigurationError.requiredFormatUnavailable } // Begin the device configuration. try device.lockForConfiguration() // Configure the device and depth formats. device.activeFormat = format device.activeDepthDataFormat = depthFormat let desc = format.formatDescription dimensions = CMVideoFormatDescriptionGetDimensions(desc) let duration = CMTime(value:1, timescale:CMTimeScale(60)) device.activeVideoMinFrameDuration = duration device.activeVideoMaxFrameDuration = duration // Finish the device configuration. device.unlockForConfiguration() self.device = device print("Selected video format: \(device.activeFormat)") print("Selected depth format: \(String(describing: device.activeDepthDataFormat))") // Add a device input to the capture session. let deviceInput = try AVCaptureDeviceInput(device: device) captureSession.addInput(deviceInput) guard let audioDevice = AVCaptureDevice.default(for: .audio) else { return } // Configure audio input - always configure audio even if isAudioEnabled is false audioDeviceInput = try! AVCaptureDeviceInput(device: audioDevice) captureSession.addInput(audioDeviceInput) deviceSystemPressureStateObservation = device.observe( \.systemPressureState, options: .new ) { _, change in guard let systemPressureState = change.newValue else { return } print("system pressure \(systemPressureState.levelAsString()) due to \(systemPressureState.factors)") } } Here's how I'm setting up the output: private func setupLiDARCaptureOutputs() { // Create an object to output video sample buffers. videoDataOutput = AVCaptureVideoDataOutput() captureSession.addOutput(videoDataOutput) // Create an object to output depth data. depthDataOutput = AVCaptureDepthDataOutput() depthDataOutput.isFilteringEnabled = false captureSession.addOutput(depthDataOutput) audioDeviceOutput = AVCaptureAudioDataOutput() audioDeviceOutput.setSampleBufferDelegate(self, queue: videoQueue) captureSession.addOutput(audioDeviceOutput) // Create an object to synchronize the delivery of depth and video data. outputVideoSync = AVCaptureDataOutputSynchronizer(dataOutputs: [depthDataOutput, videoDataOutput]) outputVideoSync.setDelegate(self, queue: videoQueue) // Enable camera intrinsics matrix delivery. guard let outputConnection = videoDataOutput.connection(with: .video) else { return } if outputConnection.isCameraIntrinsicMatrixDeliverySupported { outputConnection.isCameraIntrinsicMatrixDeliveryEnabled = true } } The top part of my delegate implementation is as follows: func dataOutputSynchronizer( _ synchronizer: AVCaptureDataOutputSynchronizer, didOutput synchronizedDataCollection: AVCaptureSynchronizedDataCollection ) { // Retrieve the synchronized depth and sample buffer container objects. guard let syncedDepthData = synchronizedDataCollection.synchronizedData(for: depthDataOutput) as? AVCaptureSynchronizedDepthData, let syncedVideoData = synchronizedDataCollection.synchronizedData(for: videoDataOutput) as? AVCaptureSynchronizedSampleBufferData else { if synchronizedDataCollection.synchronizedData(for: depthDataOutput) == nil { print("no depth data at time \(mach_absolute_time())") } if synchronizedDataCollection.synchronizedData(for: videoDataOutput) == nil { print("no video data at time \(mach_absolute_time())") } return } print("received depth data \(mach_absolute_time())") } As you can see, I'm console logging whenever depth data is not received. Note because I'm driving the video frames at 60 fps, its expected that I'll only receive depth data for every alternate video frame. Console output is posted as a follow up comment (because of the character limit). I edited some lines out for brevity. You'll see it started streaming correctly but after a while it stopped received both video and depth outputs (in some other runs, it works perfectly and in some other runs I receive no depth data whatsoever). One thing to note, I sometimes run quicktime mirroring to see the device screen to see what the app is displaying (so not sure if that's causing any interference - that said I don't see any system pressure changes either). Any help is most appreciated! Thanks.

I am recording video on iOS using ReplayKit and found that after copying data in the processSampleBuffer:withType: callback using memcpy, the data changes. This occurs particularly frequently when the screen content changes rapidly, making it look like the frames are overlapping. I found that the values starting from byte 672 in the video data on my device often change. Here is the test demo: - (void)processSampleBuffer:(CMSampleBufferRef)sampleBuffer withType:(RPSampleBufferType)sampleBufferType { switch (sampleBufferType) { case RPSampleBufferTypeVideo: { CVPixelBufferRef pixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer); CVPixelBufferLockBaseAddress(pixelBuffer, kCVPixelBufferLock_ReadOnly); int ret = 0; uint8_t *oYData = CVPixelBufferGetBaseAddressOfPlane(pixelBuffer, 0); size_t oYSize = CVPixelBufferGetHeightOfPlane(pixelBuffer, 0) * CVPixelBufferGetBytesPerRowOfPlane(pixelBuffer, 0); uint8_t *oUVData = CVPixelBufferGetBaseAddressOfPlane(pixelBuffer, 1); size_t oUVSize = CVPixelBufferGetHeightOfPlane(pixelBuffer, 1) * CVPixelBufferGetBytesPerRowOfPlane(pixelBuffer, 1); if (oYSize <= 672) { return; } uint8_t tempValue = oYData[672]; uint8_t *tYData = malloc(oYSize); memcpy(tYData, oYData, oYSize); if (tYData[672] != oYData[672]) { NSLog(@"$$$$$$$$$$$$$$$$------ t:%d o:%d temp:%d", tYData[672], oYData[672], tempValue); } free(tYData); CVPixelBufferUnlockBaseAddress(pixelBuffer, kCVPixelBufferLock_ReadOnly); break; } default: { break; } } } Output: $$$$$$$$$$$$$$$$------ t:110 o:124 temp:110 $$$$$$$$$$$$$$$$------ t:111 o:133 temp:111 $$$$$$$$$$$$$$$$------ t:124 o:138 temp:124 $$$$$$$$$$$$$$$$------ t:133 o:144 temp:133 $$$$$$$$$$$$$$$$------ t:138 o:151 temp:138 $$$$$$$$$$$$$$$$------ t:144 o:156 temp:144 $$$$$$$$$$$$$$$$------ t:151 o:135 temp:151 $$$$$$$$$$$$$$$$------ t:156 o:78 temp:156 $$$$$$$$$$$$$$$$------ t:135 o:76 temp:135 $$$$$$$$$$$$$$$$------ t:78 o:77 temp:78 $$$$$$$$$$$$$$$$------ t:76 o:80 temp:76 $$$$$$$$$$$$$$$$------ t:77 o:80 temp:77 $$$$$$$$$$$$$$$$------ t:80 o:79 temp:80 $$$$$$$$$$$$$$$$------ t:79 o:80 temp:79

Hello! I'm trying to create a headphone safety prototype to give warnings if I listen to music too loud, but inputing my headphone's impedance, sensitivity, and wanted SPL level, and all I need is just the data on the amount of power each percentage of volume outputs(I'm assuming the MacBook Pro has 1-100% volume scale). If anyone has this info, or can direct me to someone who has this info, that would be great! Also do I contact apple support for things like this? I'm not too sure... Thanks!!

Hello, I have a command line application that uses iTunesLibrary to "save" the state of what I have listened to. I have it run every night via a LaunchAgent. You can see the source here: https://github.com/bolsinga/itunes_json Prior to Sequoia it would run nightly. I'd just have to grant it access to the Music library once, and it would be fine thereafter. However with Sequoia it requires UI interaction to grant it access every time. This makes it no longer run unattended overnight, defeating its purpose. I have the console logs of when this happens. You can see it in my issue tracking it here: https://github.com/bolsinga/itunes_json/issues/410 One thing that makes me wonder is that it is a command line application, not a bundle. How do I make a command line application get access to MusicKit / iTunesLibrary, and keep it thereafter? I'd like to get my pre-Sequoia behavior back. I've filed FB15592660 too. I've granted it access to run in the background, as well as access to my Music library (please see attached screenshots). AMPLibraryAgent 10:48:29.489944-0700 xpc Connection from framework client invalidated pid:57606 clientname:iTunesLibrary(itunes_json) AMPLibraryAgent 10:48:29.492763-0700 service Unloading domains(14) for ClientID:iTunesLibrary(itunes_json)-1229 previous open:15 new open:1 itunes_json 10:48:59.980864-0700 connection [0x157f05800] activating connection: mach=true listener=false peer=false name=com.apple.amp.library.framework tccd 10:48:59.982568-0700 access AUTHREQ_ATTRIBUTION: msgID=1795.214, attribution={accessing={TCCDProcess: identifier=itunes_json, pid=57652, auid=501, euid=501, binary_path=/Users/bolsinga/Applications/itunes_json/Products/usr/local/bin/itunes_json}, requesting={TCCDProcess: identifier=com.apple.AMPLibraryAgent, pid=1795, auid=501, euid=501, binary_path=/System/Library/PrivateFrameworks/AMPLibrary.framework/Versions/A/Support/AMPLibraryAgent}, }, tccd 10:48:59.982651-0700 access requestor: TCCDProcess: identifier=com.apple.AMPLibraryAgent, pid=1795, auid=501, euid=501, binary_path=/System/Library/PrivateFrameworks/AMPLibrary.framework/Versions/A/Support/AMPLibraryAgent is checking access for accessor TCCDProcess: identifier=itunes_json, pid=57652, auid=501, euid=501, binary_path=/Users/bolsinga/Applications/itunes_json/Products/usr/local/bin/itunes_json tccd 10:48:59.995636-0700 access AUTHREQ_SUBJECT: msgID=1795.214, subject=/Users/bolsinga/Applications/itunes_json/Products/usr/local/bin/itunes_json, tccd 10:48:59.996283-0700 access -[TCCDAccessIdentity staticCode]: static code for: identifier /Users/bolsinga/Applications/itunes_json/Products/usr/local/bin/itunes_json, type: 1: 0xc00341b00 at /Users/bolsinga/Applications/itunes_json/Products/usr/local/bin/itunes_json tccd 10:49:00.018205-0700 access Failed to match existing code requirement for subject /Users/bolsinga/Applications/itunes_json/Products/usr/local/bin/itunes_json and service kTCCServiceMediaLibrary cdhash H"6bc380972f4df49b337a2a05308fb7b98fbe6473" or cdhash H"0708bcaabbfbab8770522050f7e2642d4d864f31" cdhash H"6bc380972f4df49b337a2a05308fb7b98fbe6473" or cdhash H"0708bcaabbfbab8770522050f7e2642d4d864f31" tccd 10:49:00.018997-0700 access AUTHREQ_PROMPTING: msgID=1795.214, service=kTCCServiceMediaLibrary, subject=Sub:{/Users/bolsinga/Applications/itunes_json/Products/usr/local/bin/itunes_json}Resp:{TCCDProcess: identifier=itunes_json, pid=57652, auid=501, euid=501, binary_path=/Users/bolsinga/Applications/itunes_json/Products/usr/local/bin/itunes_json}, AMPLibraryAgent 10:49:02.489170-0700 xpc ampld> register framework ClientName:iTunesLibrary(itunes_json) tccd 10:49:02.488189-0700 events Publishing <TCCDEvent: type=Create, service=kTCCServiceMediaLibrary, identifier_type=Path, identifier=/Users/bolsinga/Applications/itunes_json/Products/usr/local/bin/itunes_json> to 4 subscribers: { 633 = "<TCCDEventSubscriber: token=633, state=Initial, csid=(null)>"; 628 = "<TCCDEventSubscriber: token=628, state=Passed, csid=com.apple.chronod>"; 464 = "<TCCDEventSubscriber: token=464, state=Passed, csid=com.apple.cloudd>"; 513 = "<TCCDEventSubscriber: token=513, state=Passed, csid=com.apple.photolibraryd>"; } AMPLibraryAgent 10:49:02.490391-0700 xpc ampld> registered framework ClientName:iTunesLibrary(itunes_json) with clientID:1230 itunes_json 10:49:02.792084-0700 connection [0x147e04340] activating connection: mach=true listener=false peer=false name=com.apple.amp.artworkd itunes_json 10:49:02.801482-0700 <Missing Description> openDatabase 0xe4af30f4493e5ef5 artwork folder Y '<private>' itunes_json 10:49:02.805087-0700 <Missing Description> openDatabase 0xf2db6e8d7672edc9 artwork folder Y '<private>' itunes_json 10:49:02.806736-0700 <Missing Description> openDatabase 0xfb2acd898c951851 artwork folder Y '<private>' itunes_json 10:49:02.813286-0700 <Missing Description> openDatabase 0xf0f4919c5ff0e88 artwork folder Y '<private>' itunes_json 10:49:09.634928-0700 connection [0x600002b6a0d0] activating connection: mach=true listener=false peer=false name=com.apple.cfprefsd.daemon itunes_json 10:49:09.635019-0700 connection [0x600002b78000] activating connection: mach=true listener=false peer=false name=com.apple.cfprefsd.agent AMPLibraryAgent 10:49:12.382878-0700 xpc Connection from framework client invalidated pid:57652 clientname:iTunesLibrary(itunes_json) AMPLibraryAgent 10:49:12.383474-0700 service Unloading domains(14) for ClientID:iTunesLibrary(itunes_json)-1230 previous open:15 new open:1 itunes_json.log

I use Universal Product Codes (UPC) in my app to reliably identify albums after having used albumIDs for a time. AlbumIDs can change over time for no obvious reasons (see here for songIDs) so I switched to UPCs since I believed they cannot change. Well apparently they can. A few days ago I populated a JSON with UPCs including 196871067713. Today trying to perform a MusicCatalogResourchRequest for the UPC does not return anything. When using that UPC and putting it into an Apple Music link like https://music.apple.com/de/album/folge-89-im-geistergarten/1683337782?l=en-GB redirects to https://music.apple.com/de/album/folge-89-im-geistergarten/1683337782?l=en-GB so I assume the UPC has changed from 196871067713 to 1683337782. Apple Music can handle that and redirects to the new upc both in the app and as a website. But a MusicCatalogResourceRequest cannot do that. I filed a suggestion for that (FB15167146) but I need a solution quicker. Can I somehow detect where the URL is redirecting to? Is there a way MusicCatalogResourceRequest can do this? Performing a MusicCatalogSearchRequest can be an option but seems unreliable when using the title as search term. Other ideas? Thank you

I’m using AVFoundation in my iPhone application to encode a video in MP4 format with H.264, which can then be shared or exported. Do I need to pay a license for using the H.264 format to MPEG LA? Or are these fees already covered by Apple? I’ve read articles suggesting that Apple covers these fees when encoding is done through its native APIs (or via its dedicated encoding hardware components), but I haven’t found any explicit confirmation of this point in the various documentation or contracts... Did I miss something?

I am building an app for MacOS and I am trying to implement the code to add songs to a library playlist (which is added below). The issue I am having is that if I use Music Kit to load a users library playlists, the ID for the playlist (which is just a string of numbers) does not work with the Add tracks to a Library Playlist endpoint of Apple Music API. If I retrieve the playlists from the Apple Music API and use that playlist ID (which is different than the id I get from MusicKit) my code works fine and adds the song to the playlist. The problem is that when getting a users library playlists from Apple Music API is that it does not give me all of the library playlists that I get when using Music Kit and it also does not give me Artwork for playlists that have the collage of album covers, so I would prefer to use Music Kit to get the playlists. I have also tested trying to retrieve a single playlist using the Apple Music API with the playlist Id from Music Kit and it does not work. I get the error that the resource cannot be found. Since this is a macOs app I cannot use MusicKit to add songs to library playlists. Does anyone know a way to resolve this? Or a possible workaround? Ideally I want to use MusicKit to get the library playlists and have some way to use the playlist Id and add songs to that playlist. Below is my code for adding a song to a playlist using the Apple Music API, which works correctly only if I originally get the library playlist's id value from a playlist retrieved from the Apple Music API. Also, does anyone know why the playlist Id's are not universal and are different when using Music Kit and Apple Music API? For songs and tracks it does not seem to matter if I use music kit or Apple Music API, the Id's are in the correct format for Apple Music API to use and work with my code. Thanks everyone for any and all help! func addToPlaylist(songs: [Track], playlist: Playlist, alert: Binding<AlertItem?>) async { let tracks = AppleMusicPlaylistPostRequestBody(data: songs.compactMap { AppleMusicPlaylistPostRequestItem(id: $0.id.rawValue, type: "songs") // or "library-songs" }) let playlistID = playlist.id // Build the request URL for adding a song to a playlist guard let url = URL(string: "https://api.music.apple.com/v1/me/library/playlists/\(playlistID)/tracks") else { alert.wrappedValue = AlertItem(title: "Error", message: "Invalid URL for the playlist.") return } // Authorization Header guard let musicUserToken = try? await MusicUserTokenProvider().getUserMusicToken() else { alert.wrappedValue = AlertItem(title: "Error", message: "Unable to retrieve Music User Token.") return } do { var request = URLRequest(url: url) request.httpMethod = "POST" request.setValue("Bearer \(musicUserToken)", forHTTPHeaderField: "Authorization") request.setValue("application/json", forHTTPHeaderField: "Content-Type") let encoder = JSONEncoder() let data = try encoder.encode(tracks) request.httpBody = data let musicRequest = MusicDataRequest(urlRequest: request) let musicRequestResponse = try await musicRequest.response() // Check if the request was successful (status 201) if musicRequestResponse.urlResponse.statusCode == 201 { alert.wrappedValue = AlertItem(title: "Success", message: "Song successfully added to the playlist.") } else { print("Status Code: \(musicRequestResponse.urlResponse.statusCode)") print("Response Data: \(String(data: musicRequestResponse.data, encoding: .utf8) ?? "No Data")") // Attempt to decode the error response into the AppleMusicErrorResponse model if let appleMusicError = try? JSONDecoder().decode(AppleMusicErrorResponse.self, from: musicRequestResponse.data) { let errorMessage = appleMusicError.errors.first?.detail ?? "Unknown error occurred." alert.wrappedValue = AlertItem(title: "Error", message: errorMessage) } else { alert.wrappedValue = AlertItem(title: "Error", message: "Failed to add song to the playlist.") } } } catch { alert.wrappedValue = AlertItem(title: "Error", message: "Network error: \(error.localizedDescription)") } }

When is playbackBufferEmpty triggered? Why is this property YES observed from the observer method when returning to the foreground from the background even if the buffer is not empty?

Hello, we have HLS stream app and we use AVPlayer for HLS stream. We want to implement dynamic resulotion feature as user's selection. For example, if user want to watch only 1080p user has to watch only 1080p but we have tried to implement "preferredMaximumResolution" and "preferredPeakBitRate" parameters and but AVPlayer does not force it which means that setting preferredMaximumResolution= CGSize(width: 1920, height: 1080) player does not only force to play 1080p profile, player drops resulotion to 720p but we do not want 720p stream if user selected 1080p resulotion. Is there any method to force it even if stream stalls? Thank you in advance

Our capture application records system audio via HAL plugin, however, with the latest macOS 15 Sequoia, all audio buffer values are zero. I am attaching sample code that replicates the problem. Compile as a Command Line Tool application with Xcode. STEPS TO REPRODUCE Install BlackHole 2ch audio driver: https://existential.audio/blackhole/download/?code=1579271348 Start some system audio, e.g. YouTube. Compile and run the sample application. On macOS up to Sonoma, you will hear audio via loopback and see audio values in the debug/console window. On macOS Sequoia, you will not hear audio and the audio values are 0. #import <AVFoundation/AVFoundation.h> #import <CoreAudio/CoreAudio.h> #define BLACKHOLE_UID @"BlackHole2ch_UID" #define DEFAULT_OUTPUT_UID @"BuiltInSpeakerDevice" @interface AudioCaptureDelegate : NSObject <AVCaptureAudioDataOutputSampleBufferDelegate> @end void setDefaultAudioDevice(NSString *deviceUID); @implementation AudioCaptureDelegate // receive samples from CoreAudio/HAL driver and print amplitute values for testing // this is where samples would normally be copied and passed downstream for further processing which // is not needed in this simple sample application - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection { // Access the audio data in the sample buffer CMBlockBufferRef blockBuffer = CMSampleBufferGetDataBuffer(sampleBuffer); if (!blockBuffer) { NSLog(@"No audio data in the sample buffer."); return; } size_t length; char *data; CMBlockBufferGetDataPointer(blockBuffer, 0, NULL, &length, &data); // Process the audio samples to calculate the average amplitude int16_t *samples = (int16_t *)data; size_t sampleCount = length / sizeof(int16_t); int64_t sum = 0; for (size_t i = 0; i < sampleCount; i++) { sum += abs(samples[i]); } // Calculate and log the average amplitude float averageAmplitude = (float)sum / sampleCount; NSLog(@"Average Amplitude: %f", averageAmplitude); } @end // set the default audio device to Blackhole while testing or speakers when done // called by main void setDefaultAudioDevice(NSString *deviceUID) { AudioObjectPropertyAddress address; AudioDeviceID deviceID = kAudioObjectUnknown; UInt32 size; CFStringRef uidString = (__bridge CFStringRef)deviceUID; // Gets the device corresponding to the given UID. AudioValueTranslation translation; translation.mInputData = &uidString; translation.mInputDataSize = sizeof(uidString); translation.mOutputData = &deviceID; translation.mOutputDataSize = sizeof(deviceID); size = sizeof(translation); address.mSelector = kAudioHardwarePropertyDeviceForUID; address.mScope = kAudioObjectPropertyScopeGlobal; //???? address.mElement = kAudioObjectPropertyElementMain; OSStatus status = AudioObjectGetPropertyData(kAudioObjectSystemObject, &address, 0, NULL, &size, &translation); if (status != noErr) { NSLog(@"Error: Could not retrieve audio device ID for UID %@. Status code: %d", deviceUID, (int)status); return; } AudioObjectPropertyAddress propertyAddress; propertyAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice; propertyAddress.mScope = kAudioObjectPropertyScopeGlobal; status = AudioObjectSetPropertyData(kAudioObjectSystemObject, &propertyAddress, 0, NULL, sizeof(AudioDeviceID), &deviceID); if (status == noErr) { NSLog(@"Default audio device set to %@", deviceUID); } else { NSLog(@"Failed to set default audio device: %d", status); } } // sets Blackhole device as default and configures it as AVCatureDeviceInput // sets the speakers as loopback so we can hear what is being captured // sets up queue to receive capture samples // runs session for 30 seconds, then restores speakers as default output int main(int argc, const char * argv[]) { @autoreleasepool { // Create the capture session AVCaptureSession *session = [[AVCaptureSession alloc] init]; // Select the audio device AVCaptureDevice *audioDevice = nil; NSString *audioDriverUID = nil; audioDriverUID = BLACKHOLE_UID; setDefaultAudioDevice(audioDriverUID); audioDevice = [AVCaptureDevice deviceWithUniqueID:audioDriverUID]; if (!audioDevice) { NSLog(@"Audio device %s not found!", [audioDriverUID UTF8String]); return -1; } else { NSLog(@"Using Audio device: %s", [audioDriverUID UTF8String]); } // Configure the audio input with the selected device (Blackhole) NSError *error = nil; AVCaptureDeviceInput *audioInput = [AVCaptureDeviceInput deviceInputWithDevice:audioDevice error:&error]; if (error || !audioInput) { NSLog(@"Failed to create audio input: %@", error); return -1; } [session addInput:audioInput]; // Configure the audio data output AVCaptureAudioDataOutput *audioOutput = [[AVCaptureAudioDataOutput alloc] init]; AudioCaptureDelegate *delegate = [[AudioCaptureDelegate alloc] init]; dispatch_queue_t queue = dispatch_queue_create("AudioCaptureQueue", NULL); [audioOutput setSampleBufferDelegate:delegate queue:queue]; [session addOutput:audioOutput]; // Set audio settings NSDictionary *audioSettings = @{ AVFormatIDKey: @(kAudioFormatLinearPCM), AVSampleRateKey: @48000, AVNumberOfChannelsKey: @2, AVLinearPCMBitDepthKey: @16, AVLinearPCMIsFloatKey: @NO, AVLinearPCMIsNonInterleaved: @NO }; [audioOutput setAudioSettings:audioSettings]; AVCaptureAudioPreviewOutput * loopback_output = nil; loopback_output = [[AVCaptureAudioPreviewOutput alloc] init]; loopback_output.volume = 1.0; loopback_output.outputDeviceUniqueID = DEFAULT_OUTPUT_UID; [session addOutput:loopback_output]; const char *deviceID = loopback_output.outputDeviceUniqueID ? [loopback_output.outputDeviceUniqueID UTF8String] : "nil"; NSLog(@"session addOutput for preview/loopback: %s", deviceID); // Start the session [session startRunning]; NSLog(@"Capturing audio data for 30 seconds..."); [[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:30.0]]; // Stop the session [session stopRunning]; NSLog(@"Capture session stopped."); setDefaultAudioDevice(DEFAULT_OUTPUT_UID); } return 0; }

I extracted the gain map info from an image using let url = Bundle.main.url(forResource: "IMG_1181", withExtension: "HEIC") let source = CGImageSourceCreateWithURL(url! as CFURL, nil) let portraitData = CGImageSourceCopyAuxiliaryDataInfoAtIndex(source!, 0, kCGImageAuxiliaryDataTypeHDRGainMap) as! [AnyHashable : Any] let metaData = portraitData[kCGImageAuxiliaryDataInfoMetadata] as! CGImageMetadata Then I printed all the metadata tags func printMetadataProperties(from metadata: CGImageMetadata) { guard let tags = CGImageMetadataCopyTags(metadata) as? [CGImageMetadataTag] else { return } for tag in tags { if let prefix = CGImageMetadataTagCopyPrefix(tag) as String?, let namespace = CGImageMetadataTagCopyNamespace(tag) as String?, let key = CGImageMetadataTagCopyName(tag) as String?, let value = CGImageMetadataTagCopyValue(tag){ print("Namespace: \(namespace), Key: \(key), Prefix: \(prefix), value: \(value)") } else { } } } //Namespace: http://ns.apple.com/ImageIO/1.0/, Key: hasXMP, Prefix: iio, value: True //Namespace: http://ns.apple.com/HDRGainMap/1.0/, Key: HDRGainMapVersion, Prefix: HDRGainMap, value: 131072 //Namespace: http://ns.apple.com/HDRGainMap/1.0/, Key: HDRGainMapHeadroom, Prefix: HDRGainMap, value: 3.586325 I want to create a new CGImageMetadata and tags. But when it comes to the HDR tags. It always fails to add to metadata. let tag = CGImageMetadataTagCreate( "http://ns.apple.com/HDRGainMap/1.0/" as CFString, "HDRGainMap" as CFString, "HDRGainMapHeadroom" as CFString, .default, 3.56 as CFNumber ) let path = "\(HDRGainMap):\(HDRGainMapHeadroom)" as CFString let success = CGImageMetadataSetTagWithPath(metadata, nil, path, tag)// always false The hasXMP works fine. Is HDR a private dict for Apple?

There are significant crash reports coming from iOS 18 users regarding AVKit framework that starts from this line [AVPlayerController _observeValueForKeyPath:oldValue:newValue:] which seems to be coming from iOS internal SDK. There are 2 kinds of crash we found: UI modification on background thread From the stack trace it seems like when AVPictureInPictureController is being deallocated and its view is being removed from superview somehow the code is being executed in background thread because there is this line there _AssertAutoLayoutOnAllowedThreadsOnly highlighted before the crash. But I’ve checked our code that plays around AVPictureInPictureController, in the locations where we would deallocate the object it will always be called on main thread which are insideviewDidLoad and deinit inside UIViewController class. From the log, it seems like the crash happened when user try to open another content when PIP player is active resulting in the current PIP instance will be replaced with a new one. My suspect is the observation logic inside AVPlayerController could be the hint to this issue, probably something broken over there since this issue happened across our app versions on iOS 18 users only. Unfortunately, I was unable to reproduce this issue yet but one of my colleagues reproduced it once but haven’t been able to do it again since. The reports keep raising each day up to 1.3k events in the last 30 days now. Over release object This one has lower reports than the first one but I decided to include it since it might have relevant information regarding the first crash since the starting stack trace is similar. The crash timing seems to be similar to the first one, where we deallocate existing AVPictureInPictureController and later replace it with a new one and also found only in iOS 18 users which also refers to [AVPlayerController _observeValueForKeyPath:oldValue:newValue:]. I also was unable to reproduce this issue so far. Oh, and both of the issues happened on both iPhone and iPad. We’d appreciate any advice on what we can do to avoid this in the future and probably any hint on why it could happened. I have reported this issue with bug number: FB15620734 I also attached one sample crash report for each of the crashes here. non ui thread access.crash over release.crash

Having an issue playing songs fetched with MusicKit but only on release builds, ApplicationMusicPlayer.shared.prepareToPlay() throws "The operation couldn’t be completed. (MPMusicPlayerControllerErrorDomain error 6.)" The authorization status is .authorized The debug version of the app works perfectly. Here is my project for the reference. Thank you. macOS 15.0.1, Xcode 16.0

I've requested the authentication in my main app. PHPhotoLibrary.requestAuthorization(for: .readWrite) { status in } Add the privacy description in both the main app and the extension. But No matter the device is locked or unlocked. When I call let fetchResult = PHAsset.fetchAssets(with: .image, options: nil) let count = fetchResult.count the count is always zero, even after a new photo is saved to the album in the same session.

ColorSync throughout the system interprets the Rec. ITU-R BT.709-5 color profile differently in macOS 15 than it did on macOS 14 leading to severe color differences. This is breaking/problem-causing color change. Here's a comparison of one way the results can appear different. Steps to Reproduce Open this image above (named here as sRGB_Bars.png) in ColorSync Utility. (This should be an sRGB profiled image if the forums don't mess with that.) With Digital Color Meter open and set to "Display in sRGB" [0-255] you can see the gray bars progress left-to-right as 0, 23, 46, 69, 92, 115, etc... ] Those are the correct reference values. At the bottom of the window in ColorSync use [Match to Profile] [Display -> Rec. ITU-R BT.709-5], then click the Apply Button. You can verify the image now uses the Rec 709 profile with the (i) Get Info button in the toolbar. Use "Save As…" to save the image with a different name. **) Do the steps above on macOS 14 and macOS 15 to create two images. Rec709_CreatedOnMacOS14, and Rec709_CreatedOnMacOS15. **) Compare the two images on BOTH operating system versions, and you'll see they are significantly different from each other. Rec709_CreatedOnMacOS14.png when viewed on macOS 15 has the gray values of: [0, 1, 18, 43, 67, ...] Rec709_CreatedOnMacOS14.png when viewed on macOS 15 has the gray values of: [0, 51, 72, 94, 115, ... ] These are MASSIVE differences. Significance This is not just a problem that affects ColorSync Utility or Preview, etc. This same gamma interpretation difference is affecting the Core Video, Core Image, Video Toolbox, etc pipelines as well. That gets complicated to talk about, and this is example is the simplest I can boil it down to. Conclusion Significant bug? What's going on?

Hello, I’ve encountered an issue where a green line appears only in the thumbnail view of an image in the iPhone photo gallery. The green line is not present in the actual image itself. Here are some additional details: • The issue occurs only when saving the image as a JPEG. When saved as PNG, the green line does not appear. • The green line also shows up when using the PHAsset method requestImage(for:targetSize:). Depending on the targetSize, the resulting image may contain the green line. • Interestingly, this issue does not appear on iPhone Xs Max running iOS 15.2.1. However, the green line does appear on iPhone 15 Pro Max running iOS 18.0.1 when viewing the same image. I have attached the problematic image for your reference. Following images are the screen captures that shows the issue occurring on my iPhone. iPhone 15 pro max (iOS 18.0.1) iPhone Xs Max (iOS 15.2.1 ) Could this be related to a display or gallery app issue on iOS? Any advice or solutions would be greatly appreciated. Thank you!

We are currently in the process of migrating our application from using ALAssetsLibrary to PHPhotoLibrary to ensure compatibility with the latest versions of iOS. However, we have noticed a discrepancy in the file sizes of images obtained using PHPhotoLibrary compared to those obtained using ALAssetsLibrary. Specifically, we would like to understand the following points: 1.Reason for File Size Differences: What are the reasons for the difference in file sizes between images obtained using ALAssetsLibrary and those obtained using PHPhotoLibrary? Could you provide detailed information on the settings and options in PHPhotoLibrary that affect the size and quality of the images? 2.Optimal Settings: What are the optimal settings in PHPhotoLibrary to obtain images with the same quality and file size as those obtained using ALAssetsLibrary? If possible, could you provide code examples or recommended option settings?