ConversionHelpers.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "HAL/Platform.h"
 
#include "AudioMixer.h" 
#include "Windows/AllowWindowsPlatformTypes.h"
 
THIRD_PARTY_INCLUDES_START
#include <mmdeviceapi.h>            // IMMNotificationClient
#include <audiopolicy.h>            // IAudioSessionEvents
THIRD_PARTY_INCLUDES_END
 
#include "Windows/HideWindowsPlatformTypes.h"
 
namespace Audio
{
    static inline EAudioDeviceState ConvertWordToDeviceState(DWORD InWord)
    {
        switch (InWord)
        {
        case DEVICE_STATE_ACTIVE: return Audio::EAudioDeviceState::Active;
        case DEVICE_STATE_DISABLED: return Audio::EAudioDeviceState::Disabled;
        case DEVICE_STATE_UNPLUGGED: return Audio::EAudioDeviceState::Unplugged;
        case DEVICE_STATE_NOTPRESENT: return Audio::EAudioDeviceState::NotPresent;
        default:
            break;
        }
        checkNoEntry();
        return Audio::EAudioDeviceState::NotPresent;
    }
 
    static inline IAudioMixerDeviceChangedListener::EDisconnectReason AudioSessionDisconnectToEDisconnectReason(AudioSessionDisconnectReason InDisconnectReason)
    {
        using namespace Audio;
        switch (InDisconnectReason)
        {
        case DisconnectReasonDeviceRemoval:         return IAudioMixerDeviceChangedListener::EDisconnectReason::DeviceRemoval;
        case DisconnectReasonServerShutdown:        return IAudioMixerDeviceChangedListener::EDisconnectReason::ServerShutdown;
        case DisconnectReasonFormatChanged:         return IAudioMixerDeviceChangedListener::EDisconnectReason::FormatChanged;
        case DisconnectReasonSessionLogoff:         return IAudioMixerDeviceChangedListener::EDisconnectReason::SessionLogoff;
        case DisconnectReasonSessionDisconnected:   return IAudioMixerDeviceChangedListener::EDisconnectReason::SessionDisconnected;
        case DisconnectReasonExclusiveModeOverride: return IAudioMixerDeviceChangedListener::EDisconnectReason::ExclusiveModeOverride;
        default: break;
        }
 
        checkNoEntry();
        return IAudioMixerDeviceChangedListener::EDisconnectReason::DeviceRemoval;
    }
 
}