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Platform Specifics: Audio
sebjf edited this page May 7, 2021
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Whether a specific or the default device is used is determined by the audio_device_core_win.cc _usingOutputDeviceIndex flag. If set, the indexed device from IMMDeviceEnumerator::EnumAudioEndpoints is chosen, otherwise the default device is chosen with IMMDeviceEnumerator::GetDefaultAudioEndpoint.
The flag is set after a call to SetPlayoutDevice()/SetRecordingDevice().
Android only allows changing the Audio Device via the Android API. Most ADM APIs work, but the GetPlayoutDeviceName()/GetRecordingDeviceName() methods issue a Fatal log message, so should not be called.
The application should switch the audio mode to Communication on Android, like so:
AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
AndroidJavaObject activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
AndroidJavaObject audioManager = activity.Call<AndroidJavaObject>("getSystemService", "audio");
audioManager.Call("setMode", 3); // 3 is Communication Mode