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diff --git a/src/external/OculusSDK/LibOVR/Include/OVR_CAPI_Audio.h b/src/external/OculusSDK/LibOVR/Include/OVR_CAPI_Audio.h
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+++ b/src/external/OculusSDK/LibOVR/Include/OVR_CAPI_Audio.h
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+/********************************************************************************//**
+\file      OVR_CAPI_Audio.h
+\brief     CAPI audio functions.
+\copyright Copyright 2015 Oculus VR, LLC. All Rights reserved.
+************************************************************************************/
+
+
+#ifndef OVR_CAPI_Audio_h
+#define OVR_CAPI_Audio_h
+
+#ifdef _WIN32
+// Prevents <Windows.h> from defining min() and max() macro symbols.
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#include <windows.h>
+#include "OVR_CAPI.h"
+#define OVR_AUDIO_MAX_DEVICE_STR_SIZE 128
+
+/// Gets the ID of the preferred VR audio output device.
+///
+/// \param[out] deviceOutId The ID of the user's preferred VR audio device to use, which will be valid upon a successful return value, else it will be WAVE_MAPPER.
+///
+/// \return Returns an ovrResult indicating success or failure. In the case of failure, use
+///         ovr_GetLastErrorInfo to get more information.
+///
+OVR_PUBLIC_FUNCTION(ovrResult) ovr_GetAudioDeviceOutWaveId(UINT* deviceOutId);
+
+/// Gets the ID of the preferred VR audio input device.
+///
+/// \param[out] deviceInId The ID of the user's preferred VR audio device to use, which will be valid upon a successful return value, else it will be WAVE_MAPPER.
+///
+/// \return Returns an ovrResult indicating success or failure. In the case of failure, use
+///         ovr_GetLastErrorInfo to get more information.
+///
+OVR_PUBLIC_FUNCTION(ovrResult) ovr_GetAudioDeviceInWaveId(UINT* deviceInId);
+
+
+/// Gets the GUID of the preferred VR audio device as a string.
+///
+/// \param[out] deviceOutStrBuffer A buffer where the GUID string for the device will copied to.
+///
+/// \return Returns an ovrResult indicating success or failure. In the case of failure, use
+///         ovr_GetLastErrorInfo to get more information.
+///
+OVR_PUBLIC_FUNCTION(ovrResult) ovr_GetAudioDeviceOutGuidStr(WCHAR deviceOutStrBuffer[OVR_AUDIO_MAX_DEVICE_STR_SIZE]);
+
+
+/// Gets the GUID of the preferred VR audio device.
+///
+/// \param[out] deviceOutGuid The GUID of the user's preferred VR audio device to use, which will be valid upon a successful return value, else it will be NULL.
+///
+/// \return Returns an ovrResult indicating success or failure. In the case of failure, use
+///         ovr_GetLastErrorInfo to get more information.
+///
+OVR_PUBLIC_FUNCTION(ovrResult) ovr_GetAudioDeviceOutGuid(GUID* deviceOutGuid);
+
+
+/// Gets the GUID of the preferred VR microphone device as a string.
+///
+/// \param[out] deviceInStrBuffer A buffer where the GUID string for the device will copied to.
+///
+/// \return Returns an ovrResult indicating success or failure. In the case of failure, use
+///         ovr_GetLastErrorInfo to get more information.
+///
+OVR_PUBLIC_FUNCTION(ovrResult) ovr_GetAudioDeviceInGuidStr(WCHAR deviceInStrBuffer[OVR_AUDIO_MAX_DEVICE_STR_SIZE]);
+
+
+/// Gets the GUID of the preferred VR microphone device.
+///
+/// \param[out] deviceInGuid The GUID of the user's preferred VR audio device to use, which will be valid upon a successful return value, else it will be NULL.
+///
+/// \return Returns an ovrResult indicating success or failure. In the case of failure, use
+///         ovr_GetLastErrorInfo to get more information.
+///
+OVR_PUBLIC_FUNCTION(ovrResult) ovr_GetAudioDeviceInGuid(GUID* deviceInGuid);
+
+#endif //OVR_OS_MS
+
+#endif    // OVR_CAPI_Audio_h