//========= Copyright Valve Corporation ============//
#pragma once

namespace vr
{

class IVRClientCore
{
public:
       /** Initializes the system */
       virtual EVRInitError Init( vr::EVRApplicationType eApplicationType, const char *pStartupInfo ) = 0;

       /** cleans up everything in vrclient.dll and prepares the DLL to be unloaded */
       virtual void Cleanup() = 0;

       /** checks to see if the specified interface/version is supported in this vrclient.dll */
       virtual EVRInitError IsInterfaceVersionValid( const char *pchInterfaceVersion ) = 0;

       /** Retrieves any interface from vrclient.dll */
       virtual void *GetGenericInterface( const char *pchNameAndVersion, EVRInitError *peError ) = 0;

       /** Returns true if any driver has an HMD attached. Can be called outside of Init/Cleanup */
       virtual bool BIsHmdPresent() = 0;

       /** Returns an English error string from inside vrclient.dll which might be newer than the API DLL */
       virtual const char *GetEnglishStringForHmdError( vr::EVRInitError eError ) = 0;

       /** Returns an error symbol from inside vrclient.dll which might be newer than the API DLL */
       virtual const char *GetIDForVRInitError( vr::EVRInitError eError ) = 0;
};

static const char * const IVRClientCore_Version = "IVRClientCore_003";


}