iOS Speech-to-text AVAudioInputNode(?) 随机崩溃

Question

我的应用程序中有语音转文本功能，请按住按钮；视图控制器从窗口边界外动画进入视图并开始录制，释放按钮；录制停止，视图动画超出窗口范围。

突然，我通过 Firebase Crashreporting 收到一些崩溃报告，该功能在某些用户（2 个用户 / 5 个实例，所有相同的事件）上崩溃了.. 下面是我的崩溃日志事件指向我的代码.. 但是，我只是无法重现错误，我已经尝试了 1000 次，压力加载（猴子按钮捣碎它等），它不会在我的设备上崩溃..

有人可以帮我剖析底部/建议中的堆栈跟踪吗？/ 有什么问题的建议？我能做些什么来稳定？

据我了解，它围绕 installTapOnBus:0? 对下一步有什么建议吗？

_audioEngine = [[AVAudioEngine alloc] init];
_speechRecognizer = [[SFSpeechRecognizer alloc] initWithLocale:[NSLocale localeWithLocaleIdentifier:@"da"]];
[_speechRecognizer setDelegate:self];
_request = [[SFSpeechAudioBufferRecognitionRequest alloc] init];


AVAudioInputNode *node =[_audioEngine inputNode];
AVAudioFormat *recordingFormat = [node outputFormatForBus:0];


[node installTapOnBus:0 bufferSize:1024 format:recordingFormat block:^(AVAudioPCMBuffer * _Nonnull buffer, AVAudioTime * _Nonnull when) {

        [_request appendAudioPCMBuffer:buffer];

    }];
}

堆栈跟踪：

1 CoreFoundation __exceptionPreprocess + 1232864

2 libobjc.A.dylib objc_exception_throw + 34100

3 CoreFoundation +[NSException raise:format:arguments:] + 1232560

4 AVFAudio AVAE_RaiseException(NSString*, ...) + 78280

5 AVFAudio AVAudioNodeImplBase::CreateRecordingTap(unsigned long, unsigned int, AVAudioFormat*, void (AVAudioPCMBuffer*, AVAudioTime*) block_pointer) + 554488

6 AVFAudio -[AVAudioNode installTapOnBus:bufferSize:format:block:] + 545144

7 shoppinglist 4295363296 + 297696

8 shoppinglist 4295358408 + 292808

9 UIKit -[UIViewController loadViewIfRequired] + 65212

10 UIKit -[UIViewController view] + 64152

11 shoppinglist 4295296168 + 230568

12 shoppinglist 4295272504 + 206904

13 shoppinglist 4295266368 + 200768

14 UIKit -[UIViewController _setViewAppearState:isAnimating:] + 162800

15 UIKit -[UIViewController __viewWillAppear:] + 162144

16 UIKit __56-[UIPresentationController runTransitionForCurrentState]_block_invoke + 3540196

17 UIKit _runAfterCACommitDeferredBlocks + 2738508

18 UIKit _cleanUpAfterCAFlushAndRunDeferredBlocks + 2681320

19 UIKit _afterCACommitHandler + 9796

20 CoreFoundation __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 895396

21 CoreFoundation __CFRunLoopDoObservers + 886316

22 CoreFoundation __CFRunLoopRun + 887416

23 CoreFoundation CFRunLoopRunSpecific + 36256

24 GraphicsServices GSEventRunModal + 49264

25 UIKit UIApplicationMain + 479316

26 shoppinglist 4295262124 + 196524

27 libdyld.dylib start + 17816

Answer 1

我也有同样的崩溃，但现在它已修复。所以你需要检查音频格式的速率：

AVAudioInputNode *node =[_audioEngine inputNode];
AVAudioFormat *recordingFormat = [node outputFormatForBus:0];

if (recordingFormat.sampleRate > 0)
{
    [node installTapOnBus:0 bufferSize:1024 format:recordingFormat block:^(AVAudioPCMBuffer * _Nonnull buffer, AVAudioTime * _Nonnull when) {

        [_request appendAudioPCMBuffer:buffer];

    }];
}