I want to make a app that can change the pitch and speed of a currently playing song. Is it possible with any apple api?

We have a music type app, and I've received some users feedback that complain about the music quality become very bad after update to iOS 16. At last, we found the reason is that they shift the pitch by using "kAudioUnitSubType_NewTimePitch" which is one of our offered function. iOS 15 and other earlier version can works well. Is there any Apple engineer can solve my problem?

I want to generate a sample withAudioFilePlayerUnit to play 6 channel audio file. The issue here is that, the AudioFilePlayerUnit callback shows stereo channel in buffer, but the file loaded to the fileUnit was of 6 channels. I have tried setting the input and output format for the fileUnit to that of file's stream format(6 channels), but still the callback shows stereo channels in buffer. I have added my code snippet below. OSStatus error = AudioFileOpenURL(audioFileURL, kAudioFileReadPermission, 0, &_audioInputFileId); UInt32 dataSize = sizeof(AudioStreamBasicDescription); AudioFileGetProperty(_audioInputFileId, kAudioFilePropertyDataFormat, &dataSize, &_fileStreamDescription); setting the input and outputFormat for the unit : UInt32 propertySize = sizeof(_fileStreamDescription); AudioUnitScope scope = kAudioUnitScope_Input; OSStatus err = AudioUnitSetProperty(filePlayerUnit, kAudioUnitProperty_StreamFormat, scope, 0, &_fileStreamDescription, propertySize); OSStatus err = AudioUnitSetProperty(filePlayerUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 0, &_fileStreamDescription, propertySize); here setting the input and output format also throws error. I have added the callback using AudioUnitRenderNotify method to the fileUnit but when check the buffer in the callback I can see it returning as stereo channels.

Summary: I've created an AUAudioUnit to host some third party signal processing code and am running into a edge case limitation where I can only process and supply output audio data (from the internalRenderBlock) if it's an exact multiple of a specific number of frames. More Detail: This third party code ONLY works with exactly 10ms of data at time. For example, say with 48khz audio, it only accepts 480 frames on each processing function call. If the AUAudioUnit's internalRenderBlock is called with 1024 frames as the frame count, I can use the pullInputBlock to get 480 frames, process it, another 480 frames, and process that, but what should I then do with the remaining 64 frames? Possible Solutions Foiled: a) It seems there's no way to indicate to the host that I have only consumed 960 frames and will only be supplying 960 frames of output. I thought perhaps the host would observe that if the outputData ABL buffers have less than the frame count passed into the internalRenderBlock, that it might appropriately advance the timestamp only by that much the next time time around, but it does not. So it's required that all the audio be processed before the block returns, but I can only do that if the block is requested to handle exactly a multiple of 10ms of data. b) I can't buffer up the "remainder" input and process it on the next internalRenderBlock cycle because all of the output must be provided on return as discussed in A. c) As an alternative, I see no way to have the unit explicitly indicate to the host, how many frames the unit can process at a time. maximumFramesToRender is the host telling the unit (not the reverse), and either way it's a maximum only, not a minumum as well. What can I do?

Hello, I've tried to make my AudioUnitViewController more generic. Here minimal example of what I have: open class AudioUnitViewControllerBase<T>: AUViewController, AUAudioUnitFactory { private var audioUnit: AUAudioUnit? open override func loadView() { view = NSView() } open func createAudioUnit(with desc: AudioComponentDescription) throws -> AUAudioUnit { audioUnit = try MyAudioUnit(componentDescription: desc, options: []) return audioUnit! } } public class AudioUnitViewController: AudioUnitViewControllerBase<Any> { } It is successfully compiled, but works and passes validation only if AudioUnitViewControllerBase has no generic type paramers. auval prints following: TESTING OPEN TIMES: COLD: FATAL ERROR: OpenAComponent: result: -10863,0xFFFFD591 What am I doing wrong?

Hello, I'm trying to write my own audio unit extension and I have a problem. I don't understand the difference between implementorValueObserver and AUParameterEvent. It looks like both of them can be used to update parameters in DSPKernel. It seems natural to use an observer, but it requires to think about thread safety in contrast to AUParameterEvent handling. Can someone comment on this or give me more context about this two entities?

I have a working AUv3 AUAudioUnit app extension but I had to work around a strange issue: I found that the internalRenderBlock value is fetched and invoked before allocateRenderResources() is called. I have not found any documentation stating that this would be the case, and intuitively it does not make any sense. Is there something I am doing in my code that would be causing this to be the case? Should I *force* a call to allocateRenderResources() if it has not been called before internalRenderBlock is fetched? Thanks! Brad

Hi there, I'm building an audio app for iOS and ran into a very weird bug when using multiple AVAudioUnitSampler instances to play different instruments at the same time. I narrowed down the repro to: let sampler = AVAudioUnitSampler() self.audioEngine.attach(sampler) self.audioEngine.connect(sampler, to: self.audioEngine.mainMixerNode, format: nil) try! sampler.loadInstrument(at: Bundle.main.url(forResource: "SteinwayPiano-v1", withExtension: "aupreset")!) let sampler2 = AVAudioUnitSampler() self.audioEngine.attach(sampler2) self.audioEngine.connect(sampler2, to: self.audioEngine.mainMixerNode, format: nil) try! sampler2.loadInstrument(at: Bundle.main.url(forResource: "Rhodes-v1", withExtension: "aupreset")!) I get the following error on the console (real device and simulator): 2022-07-02 21:27:28.329147+0200 soundboard[23592:612358] [default]     ExtAudioFile.cpp:193  about to throw -42: open audio file 2022-07-02 21:27:28.329394+0200 soundboard[23592:612358] [default]      FileSample.cpp:52  about to throw -42: FileSample::LoadFromURL: ExtAudioFileOpenURL 2022-07-02 21:27:28.330206+0200 soundboard[23592:612358]     SampleManager.cpp:434  Failed to load sample 'Sounds/Rhodes/A_050__D3_4-ST.wav -- file:///Users/deermichel/Library/Developer/CoreSimulator/Devices/79ACB2AD-5155-4798-8E96-649964CB274E/data/Containers/Bundle/Application/A10C7802-3F4B-445D-A390-B6A84D8071EE/soundboard.app/': error -42 2022-07-02 21:27:28.330414+0200 soundboard[23592:612358] [default]     SampleManager.cpp:435  about to throw -42: Failed to load sample Sometimes the app crashes after that, but most importantly, sampler2 won't work. Now, if I only create one of the samplers, it works as expected. Also, if both samplers reference to the same aupreset, it works. Only if I try to load different samples, I end up in undefined behavior. Adding a audioEngine.detach(sampler) before creating sampler2 doesn't solve the issue either - it will fail loading the samples with the same error. However, when deferring removal of sampler and creation of sampler2 a little bit, it magically starts working (though that's not what I want because I need both samplers simultaneously): let sampler = AVAudioUnitSampler() self.audioEngine.attach(sampler) self.audioEngine.connect(sampler, to: self.audioEngine.mainMixerNode, format: nil) try! sampler.loadInstrument(at: Bundle.main.url(forResource: "SteinwayPiano-v1", withExtension: "aupreset")!) DispatchQueue.main.async { self.audioEngine.detach(sampler)   let sampler2 = AVAudioUnitSampler()   self.audioEngine.attach(sampler2)   self.audioEngine.connect(sampler2, to: self.audioEngine.mainMixerNode, format: nil)   try! sampler2.loadInstrument(at: Bundle.main.url(forResource: "Rhodes-v1", withExtension: "aupreset")!) } My samples are linked to the bundle as a folder alias - and I have a feeling that there is some exclusive lock... however I don't have the source code to debug the errors on the console further. Any help is appreciated, have a good one :)

I'm extending an AudioUnit to generate multi-channel output, and trying to write a unit test using AVAudioEngine. My test installs a tap on the AVAudioNode's output bus and ensures the output is not silence. This works for stereo. I've currently got: auto avEngine = [[AVAudioEngine alloc] init]; [avEngine attachNode:avAudioUnit]; auto format = [[AVAudioFormat alloc] initStandardFormatWithSampleRate:44100. channels:channelCount]; [avEngine connect:avAudioUnit to:avEngine.mainMixerNode format:format]; where avAudioUnit is my AU. So it seems I need to do more than simply setting the channel count for the format when connecting, because after this code, [avAudioUnit outputFormatForBus:0].channelCount is still 2. Printing the graph yields: AVAudioEngineGraph 0x600001e0a200: initialized = 1, running = 1, number of nodes = 3 ******** output chain ******** node 0x600000c09a80 {'auou' 'ahal' 'appl'}, 'I' inputs = 1 (bus0, en1) <- (bus0) 0x600000c09e00, {'aumx' 'mcmx' 'appl'}, [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved] node 0x600000c09e00 {'aumx' 'mcmx' 'appl'}, 'I' inputs = 1 (bus0, en1) <- (bus0) 0x600000c14300, {'augn' 'brnz' 'brnz'}, [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved] outputs = 1 (bus0, en1) -> (bus0) 0x600000c09a80, {'auou' 'ahal' 'appl'}, [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved] node 0x600000c14300 {'augn' 'brnz' 'brnz'}, 'I' outputs = 1 (bus0, en1) -> (bus0) 0x600000c09e00, {'aumx' 'mcmx' 'appl'}, [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved] So AVAudioEngine just silently ignores whatever channel counts I pass to it. If I do: auto numHardwareOutputChannels = [avEngine.outputNode outputFormatForBus:0].channelCount; NSLog(@"hardware output channels %d\n", numHardwareOutputChannels); I get 30, because I have an audio interface connected. So I would think AVAudioEngine would support this. I've also tried setting the format explicitly on the connection between the mainMixerNode and the outputNode to no avail.

The AUAudioUnit in my app uses the user presets system that was introduced with iPadOS/iOS 13. The user presets system worked well in iPadOS 13, and it worked in at least one of the pre-release beta versions of iPadOS 14. However, it has not worked since iPadOS 14.0 was released. The problem is (superficially, at least) that: saveUserPreset no longer writes preset files to the app's Documents folder, but the method doesn't fail either. The userPresets array, which typically contains the presets that were deserialised from the files stored in the Documents folder, is invariably empty. The presets that the array would contain prior to upgrading from iPadOS 13 are no longer accessible. In other words, prior to upgrading to iPadOS 14, my app could save user presets using the saveUserPreset method and subsequently access their contents from the userPresets array. Since upgrading to iPadOS 14, the userPresets array is invariably empty and the saveUserPreset method no longer saves presets to the Documents folder. Has anyone else experienced this problem?

Hello, my app crashed on the new MacOS12.x system, it works well on MacOS 11 BigSur. I'm developing an audio app on MacOS using AudioUnit, it sometime crashed when i switch devices. the relevant api is: AudioUnitSetProperty(audio_unit, kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, kAudioUnitOutputBus, &rnd_id, sizeof(rnd_id)); it troubles me for month, i can't find the reason or any useful info, any help will be appreciate. the crash log is: OS Version:      macOS 12.1 (21C51) Report Version:    12 Bridge OS Version:  6.1 (19P647) Crashed Thread:    43 schedule-thread Exception Type:    EXC_BAD_ACCESS (SIGSEGV) Exception Codes:   KERN_INVALID_ADDRESS at 0x00000a14f8969188 Exception Codes:   0x0000000000000001, 0x00000a14f8969188 Exception Note:    EXC_CORPSE_NOTIFY Application Specific Information: objc_msgSend() selector name: copy Thread 43 Crashed:: schedule-thread 0 libobjc.A.dylib         0x7ff815ef405d objc_msgSend + 29 1 CoreAudio            0x7ff817a237b9 HALC_ShellDevice::_GetPropertyData(unsigned int, AudioObjectPropertyAddress const&, unsigned int, void const*, unsigned int, unsigned int&, void*, unsigned int&, AudioObjectPropertyAddress&, bool&) const + 1133 2 CoreAudio            0x7ff817c57b81 invocation function for block in HALC_ShellObject::GetPropertyData(unsigned int, AudioObjectPropertyAddress const&, unsigned int, void const*, unsigned int, unsigned int&, void*) const + 107 3 CoreAudio            0x7ff817e8a606 HALB_CommandGate::ExecuteCommand(void () block_pointer) const + 98 4 CoreAudio            0x7ff817c56a98 HALC_ShellObject::GetPropertyData(unsigned int, AudioObjectPropertyAddress const&, unsigned int, void const*, unsigned int, unsigned int&, void*) const + 376 5 CoreAudio            0x7ff817b04235 HAL_HardwarePlugIn_ObjectGetPropertyData(AudioHardwarePlugInInterface**, unsigned int, AudioObjectPropertyAddress const*, unsigned int, void const*, unsigned int*, void*) + 349 6 CoreAudio            0x7ff817c16109 HALPlugIn::ObjectGetPropertyData(HALObject const&, AudioObjectPropertyAddress const&, unsigned int, void const*, unsigned int&, void*) const + 59 7 CoreAudio            0x7ff817bd2f5d HALObject::GetPropertyData(AudioObjectPropertyAddress const&, unsigned int, void const*, unsigned int&, void*) const + 461 8 CoreAudio            0x7ff817f2ffca HALDevice::GetPropertyData(AudioObjectPropertyAddress const&, unsigned int, void const*, unsigned int&, void*) const + 644 9 CoreAudio            0x7ff8179809ab AudioObjectGetPropertyData + 275 10 AudioDSP              0x134b6df19 0x13490b000 + 2502425 11 AudioDSP              0x134b69776 0x13490b000 + 2484086 12 AudioDSP              0x134cc4eb4 0x13490b000 + 3907252 13 AudioDSP              0x134cc5f56 0x13490b000 + 3911510 14 AudioDSP              0x134e17b2c 0x13490b000 + 5294892 15 AudioDSP              0x134e0f4d1 0x13490b000 + 5260497

We're seeing the following when running auvaltool It seems AUParameterNode cannot be constructed with a default value and has no option to set default values via property or method so what does this mean? .... Does it mean we ALSO have to iterate all the parameters using the old fashioned long winded toolbox calls ? Or does it mean nothing at all? The "Will fail in future auval version" is worrying! Values: Minimum = 5.000000, Default = 0.000000, Maximum = 300.000000 Flags: Expert Mode, Readable,  WARNING: use -strict_DefP flag * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Parameter's Published defaultvalue does not fall with [min, max] range  * * This will fail using -strict option. Will fail in future auval version  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *   -parameter PASS

Hi there, My App is playing back WebRTC audio from the Ant Media Servers on iOS. I need to be able to manipulate this audio and delay it around 150ms (variable). Ideally client side. How might i use a delay AU effect on realtime WebRTC audio? Alternatively could we code a buffer? If so, where/how would we insert this buffer? Thanks

Curious if there is a sound way for an AUv3 component to identify how many other instances of it that are running on a device. For instance, if GarageBand has 4 tracks and all of the tracks use the same AUv3 component, is there a sound way for each one to obtain a unique index value? Thanks!

This seems to be a sandboxing issue but the solution is not so obvious ...  Our sandboxed Audio unit extension requires a permanent folder in which to store a database which can be used by all instances of the AU. Where can we store the database in a directory so that the AU can find it regardless of which host app it's running in ? The AU supports loading in-process. The problem we have is that when the AU is running in-process in a sandboxed host app URLs to the usual directories ( ~documents, shared, app support etc ) all resolve to the sandbox container.   But when the AU is hosted in a non-sandboxed host  ( ie. Logic Pro )  the URLs resolve to the actual user folder.  (~/users/xxx/documents etc  ) How can the AU automatically obtain a URL that will always resolve to the same place, will be permanent, wont be hidden from the user AND still remain “legal” for distributing in the App Store?   …   thanks!

I've noticed that on Monterey/Big Sur certain system and C++ functions in Logic no longer appear to work on files located outside of /Library/Audio/Plug-Ins/Components. For example, if you try to use std::ifstream on a file outside of the system plugin directory, it simply doesn't work (but still works fine in DAWs like Reaper, Ableton, ect). Certain graphics functions like NSOpenPanel appear to no longer work at all: Logic seems to prevent the window from opening, but still allows pop-up windows like CFUserNotificationDisplayAlert to display. Again, in other DAWs this all works fine. Has anyone noticed this, and if so, what's going on here? Is this the intended behavior for Logic now? It's not a huge deal, but some users like to install or place the sample directories of my plugins on different hard drives and things like that, and it seems like this is maybe no longer possible if they are using Logic? Tested in Logic 10.7.3 Monterey 12.3. Older AU SDK, but doubtful that's what has caused this.

I'm writing a macOS audio unit hosting app using the AVAudioUnit and AUAudioUnit APIs. I'm trying to use the NSView cacheDisplay(in:to:) function to capture an image of a plugin's view: func viewToImage(veiwToCapture: NSView) -> NSImage? {     var image: NSImage? = nil     if let rep = veiwToCapture.bitmapImageRepForCachingDisplay(in: veiwToCapture.bounds) {       veiwToCapture.cacheDisplay(in: veiwToCapture.bounds, to: rep)       image = NSImage(size: veiwToCapture.bounds.size)       image!.addRepresentation(rep)     }     return image   } } This works ok when a plugin is instantiated using the .loadInProcess option. If the plugin is instantiated using the .loadOutOfProcess option the resulting bitmapImageRep is blank. I'd much rather be loading plugins out-of-process for the enhanced stability. Is there any trick I'm missing to be able to capture the contents of the NSView from an out-of-process audio unit?

Hi Update complete today and Magic Mouse is no longer scrolling Accessibility, Sound, Keyboard in Preferences can't be accessed iPods Pro can't be connected as well as any other device for audio Photos not synching Keyboard audio regulation switched off, unless on a wire Really? Yes, nothing changed with 12.1

In our audio unit host, we're seeing the following error thrown when keypresses are dispatched to an audio unit view , does anyone know what it means and more importantly what might be causing it ? .... I can only guess that perhaps an object has been released or not retained properly somewhere but cannot find a solution. This is error message when caught in the debugger _Thread 1: "assertion failed: '<AUAudioUnitRemoteViewController: 0x600002b00c60> does not conform to AUAudioUnitViewControllerHostInterface' in -[NSRemoteView ensureClientExportedObject] on line 7080 of file /AppleInternal/Library/BuildRoots/66382bca-8bca-11ec-aade-6613bcf0e2ee/Library/Caches/com.apple.xbs/Sources/ViewBridge/NSRemoteView.m"

When i make a call within our VOIP application (ipadOS app on MacOS and M1 - MBP 16) all is fine. If i make a call with plugged in headphones - all is fine. If i unplug the headphones during the call - whole audio just stop working. If i hang up the call, make the call again - audio is there with no problems. On iPhone and iPad work correctly. Where can be a problem? HALC_ShellDevice::CreateIOContextDescription: failed to get a description from the server HALC_ProxyIOContext::IOWorkLoop: the server failed to start, Error: 0x6E6F7065 HALC_ProxyIOContext::IOWorkLoop: the server failed to start, Error: 0x6E6F7065 HALC_ProxyIOContext::IOWorkLoop: the server failed to start, Error: 0x6E6F7065 AudioObjectGetPropertyDataSize: no object with given ID 73 AudioObjectHasProperty: no object with given ID 66 AudioObjectHasProperty: no object with given ID 66 AudioObjectHasProperty: no object with given ID 0 [auvp] AUVPAggregate.cpp:4413 Failed to get current tap stream physical format, err=2003332927 AudioObjectGetPropertyDataSize: no object with given ID 66 AudioObjectGetPropertyData: no object with given ID 66 AudioObjectHasProperty: no object with given ID 66 AudioObjectRemovePropertyListener: no object with given ID 66 AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 66 AudioObjectGetPropertyDataSize: no object with given ID 73 AudioObjectHasProperty: no object with given ID 66 AudioObjectHasProperty: no object with given ID 66 HALC_ProxySystem::GetObjectInfo: got an error from the server, Error: 560947818 (!obj) AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 66 HALC_ShellObject::HasProperty: there is no proxy object AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 73 [auvp] AUVPAggregate.cpp:6912 error 2003332927 getting input sample rate AudioObjectHasProperty: no object with given ID 73 [auvp] AUVPAggregate.cpp:6922 error 2003332927 getting input latency AudioObjectHasProperty: no object with given ID 73 [auvp] AUVPAggregate.cpp:6932 error 2003332927 getting input safety offset AudioObjectHasProperty: no object with given ID 66 [auvp] AUVPAggregate.cpp:6944 error 2003332927 getting tap stream input latency AudioObjectHasProperty: no object with given ID 66 [auvp] AUVPAggregate.cpp:6954 error 2003332927 getting tap stream input safety offset AudioObjectHasProperty: no object with given ID 73 [auvp] AUVPAggregate.cpp:6965 error 2003332927 getting output sample rate AudioObjectHasProperty: no object with given ID 66 [auvp] AUVPAggregate.cpp:6975 error 2003332927 getting output latency AudioObjectHasProperty: no object with given ID 66 AudioDeviceDuck: no device with given ID [auvp] AUVPAggregate.cpp:6985 error 2003332927 getting output safety offset AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 66 AudioObjectsPublishedAndDied: no such owning object AudioObjectsPublishedAndDied: no such owning object AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 66 AudioObjectHasProperty: no object with given ID 73 [auvp] AUVPAggregate.cpp:6912 error 2003332927 getting input sample rate AudioObjectHasProperty: no object with given ID 73 [auvp] AUVPAggregate.cpp:6922 error 2003332927 getting input latency AudioObjectHasProperty: no object with given ID 73 [auvp] AUVPAggregate.cpp:6932 error 2003332927 getting input safety offset AudioObjectHasProperty: no object with given ID 66 [auvp] AUVPAggregate.cpp:6944 error 2003332927 getting tap stream input latency AudioObjectHasProperty: no object with given ID 66 [auvp] AUVPAggregate.cpp:6954 error 2003332927 getting tap stream input safety offset AudioObjectHasProperty: no object with given ID 73 [auvp] AUVPAggregate.cpp:6965 error 2003332927 getting output sample rate AudioObjectHasProperty: no object with given ID 66 [auvp] AUVPAggregate.cpp:6975 error 2003332927 getting output latency AudioObjectHasProperty: no object with given ID 66 [auvp] AUVPAggregate.cpp:6985 error 2003332927 getting output safety offset AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 73 AudioObjectPropertiesChanged: no such object [auvp] AUVPAggregate.cpp:2799 AggCompChanged wait failed AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 73 AudioObjectSetPropertyData: no object with given ID 73 [auvp] AUVPUtilities.cpp:472 SetDeviceMuteState(73) false: (err=560947818) AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 73 [auvp] AUVPUtilities.cpp:560 SetCFNumberValueForKeyInDescriptionDictionary(73); doesn't support 'cdes' AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 73 AudioObjectHasProperty: no object with given ID 73 AudioObjectGetPropertyDataSize: no object with given ID 73 AudioObjectHasProperty: no object with given ID 66 AudioObjectHasProperty: no object with given ID 66 AudioObjectHasProperty: no object with given ID 66 [auvp] AUVPUtilities.cpp:560 SetCFNumberValueForKeyInDescriptionDictionary(66); doesn't support 'cdes' AudioObjectHasProperty: no object with given ID 66 AudioObjectHasProperty: no object with given ID 66 [auvp] AUVPAggregate.cpp:3523 VP block error num input channels is unexpected (err=-66784) [vp] vpStrategyManager.mm:358 Error code 2003332927 reported at GetPropertyInfo [vp] vpStrategyManager.mm:358 Error code 2003332927 reported at GetPropertyInfo HALC_ProxySystem::GetObjectInfo: got an error from the server, Error: 560947818 (!obj) HALC_ShellDevice::RebuildStreamLists: there is no device [vp] vpStrategyManager.mm:358 Error code 2003332927 reported at GetPropertyInfo [vp] vpStrategyManager.mm:358 Error code 2003332927 reported at GetPropertyInfo