#include <xaudio2.h>

 #include "SDL_xaudio2_winrthelpers.h"

 #if WINAPI_FAMILY != WINAPI_FAMILY_PHONE_APP

 using Windows::Devices::Enumeration::DeviceClass;

 using Windows::Devices::Enumeration::DeviceInformation;

 using Windows::Devices::Enumeration::DeviceInformationCollection;

 #endif

 extern "C" HRESULT __cdecl IXAudio2_GetDeviceCount(IXAudio2 * ixa2, UINT32 * devcount)

 {

 #if WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP

     // There doesn't seem to be any audio device enumeration on Windows Phone.

     // In lieu of this, just treat things as if there is one and only one

     // audio device.

     *devcount = 1;

     return S_OK;

 #else

     // TODO, WinRT: make xaudio2 device enumeration only happen once, and in the background

     auto operation = DeviceInformation::FindAllAsync(DeviceClass::AudioRender);

     while (operation->Status != Windows::Foundation::AsyncStatus::Completed)

     {

     }

     DeviceInformationCollection^ devices = operation->GetResults();

     *devcount = devices->Size;

     return S_OK;

 #endif

 }

 extern "C" HRESULT IXAudio2_GetDeviceDetails(IXAudio2 * unused, UINT32 index, XAUDIO2_DEVICE_DETAILS * details)

 {

 #if WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP

     // Windows Phone doesn't seem to have the same device enumeration APIs that

     // Windows 8/RT has, or it doesn't have them at all.  In lieu of this,

     // just treat things as if there is one, and only one, default device.

     if (index != 0)

     {

         return XAUDIO2_E_INVALID_CALL;

     }

     if (details)

     {

         wcsncpy_s(details->DeviceID, ARRAYSIZE(details->DeviceID), L"default", _TRUNCATE);

         wcsncpy_s(details->DisplayName, ARRAYSIZE(details->DisplayName), L"default", _TRUNCATE);

     }

     return S_OK;

 #else

     auto operation = DeviceInformation::FindAllAsync(DeviceClass::AudioRender);

     while (operation->Status != Windows::Foundation::AsyncStatus::Completed)

     {

     }

     DeviceInformationCollection^ devices = operation->GetResults();

     if (index >= devices->Size)

     {

         return XAUDIO2_E_INVALID_CALL;

     }

     DeviceInformation^ d = devices->GetAt(index);

     if (details)

     {

         wcsncpy_s(details->DeviceID, ARRAYSIZE(details->DeviceID), d->Id->Data(), _TRUNCATE);

         wcsncpy_s(details->DisplayName, ARRAYSIZE(details->DisplayName), d->Name->Data(), _TRUNCATE);

     }

     return S_OK;

 #endif

 }