SwiftUI / Swift 中的 AudioQueueStart 错误 -66680 (kAudioQueueErr_InvalidDevice) 5.3

Question

我正在尝试录制音频，例如来自 Macbook 的内置麦克风。这是我的代码：

func record() {
    let sampleRate = 48000
    let numChannels = 1
    var inFormat = AudioStreamBasicDescription(mSampleRate: Double(sampleRate),
                                               mFormatID: kAudioFormatLinearPCM,
                                               mFormatFlags: kAudioFormatFlagsNativeFloatPacked,
                                               mBytesPerPacket: UInt32(numChannels * MemoryLayout<UInt32>.size),
                                               mFramesPerPacket: 1,
                                               mBytesPerFrame: UInt32(numChannels * MemoryLayout<UInt32>.size),
                                               mChannelsPerFrame: UInt32(numChannels),
                                               mBitsPerChannel: UInt32(8 * MemoryLayout<UInt32>.size),
                                               mReserved: UInt32(0))

    var inAQ: AudioQueueRef? = nil;

    var status = AudioQueueNewInput(&inFormat, callback, nil, nil, nil, 0, &inAQ)
    print("AudioQueueNewInput returned " + status.description)

    status = AudioQueueStart(inAQ!, nil)
    print("AudioQueueStart returned " + status.description)
}

我从 this 的回答中获取了大部分内容。但是，我收到了一个不同的错误。输出是：

AudioQueueNewInput returned 0
2021-01-02 13:41:49.341243+0100 ocean[39484:6411401] [plugin] AddInstanceForFactory: No factory registered for id <CFUUID 0x600002c79880> F8BB1C28-BAE8-11D6-9C31-00039315CD46
2021-01-02 13:41:49.408830+0100 ocean[39484:6411401] HALC_ShellDriverPlugIn::Open: opening the plug-in failed, Error: 2003329396 (what)
2021-01-02 13:41:49.472141+0100 ocean[39484:6411401] [AQ] AudioQueueObject.cpp:1179:BuildConverter: AudioConverterNew returned -50
AudioQueueStart returned -50

OSStatus -50 表示参数错误。我的哪个参数不好？

编辑：我在系统首选项中设置了不同的音频输入。我切换到内部麦克风，现在收到不同的错误：

AudioQueueNewInput returned 0
2021-01-02 14:55:03.415688+0100 ocean[40044:6458085] [plugin] AddInstanceForFactory: No factory registered for id <CFUUID 0x6000035de820> F8BB1C28-BAE8-11D6-9C31-00039315CD46
2021-01-02 14:55:03.482119+0100 ocean[40044:6458085] HALC_ShellDriverPlugIn::Open: opening the plug-in failed, Error: 2003329396 (what)
2021-01-02 14:55:03.483443+0100 ocean[40044:6458085] [aqme] AQMEIO.cpp:352:AQMEIOManager_FindIOUnit: error -66680 finding/initializing Device.AQDefaultInput
AudioQueueStart returned -66680

-66680 表示设备无效。关于为什么会这样的任何提示？我更新了标题，但我仍然想知道为什么其他音频输入拒绝这些参数。

Answer 1

通过在我的目标的签名和功能中启用“音频输入”解决了这个问题。它实际上解决了所有音频输入设备。

SwiftUI / Swift 中的 AudioQueueStart 错误 -66680 (kAudioQueueErr_InvalidDevice) 5.3

Error -66680 (kAudioQueueErr_InvalidDevice) from AudioQueueStart in SwiftUI / Swift 5.3

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