```
public final class AVAudioEngineManualRenderingError
extends java.lang.Object
```
[@enum] AVAudioEngineManualRenderingError Error codes that could be returned from AVAudioEngine manual rendering mode methods, e.g. `enableManualRenderingMode:format:maximumFrameCount:error:` and `renderOffline:toBuffer:error:`. Note that this is not a comprehensive list, and the underlying audio units could return other error codes (e.g. see kAudioUnitErr_* in AudioToolbox/AUComponent.h) from these methods as applicable. AVAudioEngineManualRenderingErrorInvalidMode The operation cannot be performed because the engine is either not in manual rendering mode or the right variant of it. AVAudioEngineManualRenderingErrorInitialized The operation cannot be performed because the engine is initialized (i.e. not stopped). AVAudioEngineManualRenderingErrorNotRunning The operation cannot be performed because the engine is not running (i.e. not started).

Class AVAudioEngineManualRenderingError