#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

}