我花了很长时间试图弄清楚如何使用音频单元从用户麦克风获取声音，以便我可以在音频单元录音回调中使用它，但我仍然堆栈。
- (OSStatus) setupMicInput {
AudioObjectPropertyAddress addr;
UInt32 size = sizeof(AudioDeviceID);
AudioDeviceID deviceID = 0;
addr.mSelector = kAudioHardwarePropertyDefaultInputDevice;
addr.mScope = kAudioObjectPropertyScopeGlobal;
addr.mElement = kAudioObjectPropertyElementMaster;
OSStatus err = AudioObjectGetPropertyData(kAudioObjectSystemObject, &addr, 0, NULL, &size, &deviceID);
checkStatus(err);
if (err == noErr) {
err = AudioUnitSetProperty(audioUnit, kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0, &deviceID, size);
}
checkStatus(err);
return err;
}
我确实收到此错误
2018-05-08 10:07:29.454485+0300 OsxSocketSound[1414:20839] [AudioHAL_Client] AudioHardware.cpp:578:AudioObjectGetPropertyDataSize: AudioObjectGetPropertyDataSize: no object with given ID 0
2018-05-08 10:07:29.454517+0300 OsxSocketSound[1414:20839]
[AudioHAL_Client] AudioHardware.cpp:666:AudioObjectGetPropertyData: AudioObjectGetPropertyData: no object with given ID 0
2018-05-08 10:07:29.454715+0300 OsxSocketSound[1414:20839] …