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Diffstat (limited to '')
-rw-r--r-- | gfx/vr/service/openvr/src/openvr_api_public.cpp | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/gfx/vr/service/openvr/src/openvr_api_public.cpp b/gfx/vr/service/openvr/src/openvr_api_public.cpp new file mode 100644 index 0000000000..54aa555955 --- /dev/null +++ b/gfx/vr/service/openvr/src/openvr_api_public.cpp @@ -0,0 +1,352 @@ +//========= Copyright Valve Corporation ============// +#define VR_API_EXPORT 1 +#include "openvr.h" +#include "ivrclientcore.h" +#include "pathtools_public.h" +#include "sharedlibtools_public.h" +#include "envvartools_public.h" +#include "hmderrors_public.h" +#include "strtools_public.h" +#include "vrpathregistry_public.h" +#include <mutex> + +using vr::EVRInitError; +using vr::IVRSystem; +using vr::IVRClientCore; +using vr::VRInitError_None; + +// figure out how to import from the VR API dll +#if defined(_WIN32) + +#if !defined(OPENVR_BUILD_STATIC) +#define VR_EXPORT_INTERFACE extern "C" __declspec( dllexport ) +#else +#define VR_EXPORT_INTERFACE extern "C" +#endif + +#elif defined(__GNUC__) || defined(COMPILER_GCC) || defined(__APPLE__) + +#define VR_EXPORT_INTERFACE extern "C" __attribute__((visibility("default"))) + +#else +#error "Unsupported Platform." +#endif + +namespace vr +{ + +static void *g_pVRModule = NULL; +static IVRClientCore *g_pHmdSystem = NULL; +static std::recursive_mutex g_mutexSystem; + + +typedef void* (*VRClientCoreFactoryFn)(const char *pInterfaceName, int *pReturnCode); + +static uint32_t g_nVRToken = 0; + +uint32_t VR_GetInitToken() +{ + return g_nVRToken; +} + +EVRInitError VR_LoadHmdSystemInternal(); +void CleanupInternalInterfaces(); + + +uint32_t VR_InitInternal2( EVRInitError *peError, vr::EVRApplicationType eApplicationType, const char *pStartupInfo ) +{ + std::lock_guard<std::recursive_mutex> lock( g_mutexSystem ); + + EVRInitError err = VR_LoadHmdSystemInternal(); + if ( err == vr::VRInitError_None ) + { + err = g_pHmdSystem->Init( eApplicationType, pStartupInfo ); + } + + if ( peError ) + *peError = err; + + if ( err != VRInitError_None ) + { + SharedLib_Unload( g_pVRModule ); + g_pHmdSystem = NULL; + g_pVRModule = NULL; + + return 0; + } + + return ++g_nVRToken; +} + +VR_INTERFACE uint32_t VR_CALLTYPE VR_InitInternal( EVRInitError *peError, EVRApplicationType eApplicationType ); + +uint32_t VR_InitInternal( EVRInitError *peError, vr::EVRApplicationType eApplicationType ) +{ + return VR_InitInternal2( peError, eApplicationType, nullptr ); +} + +void VR_ShutdownInternal() +{ + std::lock_guard<std::recursive_mutex> lock( g_mutexSystem ); + + if ( g_pHmdSystem ) + { + g_pHmdSystem->Cleanup(); + g_pHmdSystem = NULL; + } + if ( g_pVRModule ) + { + SharedLib_Unload( g_pVRModule ); + g_pVRModule = NULL; + } + +#if !defined( VR_API_PUBLIC ) + CleanupInternalInterfaces(); +#endif + + ++g_nVRToken; +} + +EVRInitError VR_LoadHmdSystemInternal() +{ + std::string sRuntimePath, sConfigPath, sLogPath; + + bool bReadPathRegistry = CVRPathRegistry_Public::GetPaths( &sRuntimePath, &sConfigPath, &sLogPath, NULL, NULL ); + if( !bReadPathRegistry ) + { + return vr::VRInitError_Init_PathRegistryNotFound; + } + + // figure out where we're going to look for vrclient.dll + // see if the specified path actually exists. + if( !Path_IsDirectory( sRuntimePath ) ) + { + return vr::VRInitError_Init_InstallationNotFound; + } + + // Because we don't have a way to select debug vs. release yet we'll just + // use debug if it's there +#if defined( LINUX64 ) || defined( LINUXARM64 ) + std::string sTestPath = Path_Join( sRuntimePath, "bin", PLATSUBDIR ); +#else + std::string sTestPath = Path_Join( sRuntimePath, "bin" ); +#endif + if( !Path_IsDirectory( sTestPath ) ) + { + return vr::VRInitError_Init_InstallationCorrupt; + } + +#if defined( WIN64 ) + std::string sDLLPath = Path_Join( sTestPath, "vrclient_x64" DYNAMIC_LIB_EXT ); +#else + std::string sDLLPath = Path_Join( sTestPath, "vrclient" DYNAMIC_LIB_EXT ); +#endif + + // only look in the override + void *pMod = SharedLib_Load( sDLLPath.c_str() ); + // nothing more to do if we can't load the DLL + if( !pMod ) + { + return vr::VRInitError_Init_VRClientDLLNotFound; + } + + VRClientCoreFactoryFn fnFactory = ( VRClientCoreFactoryFn )( SharedLib_GetFunction( pMod, "VRClientCoreFactory" ) ); + if( !fnFactory ) + { + SharedLib_Unload( pMod ); + return vr::VRInitError_Init_FactoryNotFound; + } + + int nReturnCode = 0; + g_pHmdSystem = static_cast< IVRClientCore * > ( fnFactory( vr::IVRClientCore_Version, &nReturnCode ) ); + if( !g_pHmdSystem ) + { + SharedLib_Unload( pMod ); + return vr::VRInitError_Init_InterfaceNotFound; + } + + g_pVRModule = pMod; + return VRInitError_None; +} + + +void *VR_GetGenericInterface(const char *pchInterfaceVersion, EVRInitError *peError) +{ + std::lock_guard<std::recursive_mutex> lock( g_mutexSystem ); + + if (!g_pHmdSystem) + { + if (peError) + *peError = vr::VRInitError_Init_NotInitialized; + return NULL; + } + + return g_pHmdSystem->GetGenericInterface(pchInterfaceVersion, peError); +} + +bool VR_IsInterfaceVersionValid(const char *pchInterfaceVersion) +{ + std::lock_guard<std::recursive_mutex> lock( g_mutexSystem ); + + if (!g_pHmdSystem) + { + return false; + } + + return g_pHmdSystem->IsInterfaceVersionValid(pchInterfaceVersion) == VRInitError_None; +} + +bool VR_IsHmdPresent() +{ + std::lock_guard<std::recursive_mutex> lock( g_mutexSystem ); + + if( g_pHmdSystem ) + { + // if we're already initialized, just call through + return g_pHmdSystem->BIsHmdPresent(); + } + else + { + // otherwise we need to do a bit more work + EVRInitError err = VR_LoadHmdSystemInternal(); + if( err != VRInitError_None ) + return false; + + bool bHasHmd = g_pHmdSystem->BIsHmdPresent(); + + g_pHmdSystem = NULL; + SharedLib_Unload( g_pVRModule ); + g_pVRModule = NULL; + + return bHasHmd; + } +} + +/** Returns true if the OpenVR runtime is installed. */ +bool VR_IsRuntimeInstalled() +{ + std::lock_guard<std::recursive_mutex> lock( g_mutexSystem ); + + if( g_pHmdSystem ) + { + // if we're already initialized, OpenVR is obviously installed + return true; + } + else + { + // otherwise we need to do a bit more work + std::string sRuntimePath, sConfigPath, sLogPath; + + bool bReadPathRegistry = CVRPathRegistry_Public::GetPaths( &sRuntimePath, &sConfigPath, &sLogPath, NULL, NULL ); + if( !bReadPathRegistry ) + { + return false; + } + + // figure out where we're going to look for vrclient.dll + // see if the specified path actually exists. + if( !Path_IsDirectory( sRuntimePath ) ) + { + return false; + } + + // the installation may be corrupt in some way, but it certainly looks installed + return true; + } +} + + +// ------------------------------------------------------------------------------- +// Purpose: This is the old Runtime Path interface that is no longer exported in the +// latest header. We still want to export it from the DLL, though, so updating +// to a new DLL doesn't break old compiled code. This version was not thread +// safe and could change the buffer pointer to by a previous result on a +// subsequent call +// ------------------------------------------------------------------------------- +VR_EXPORT_INTERFACE const char *VR_CALLTYPE VR_RuntimePath(); + +/** Returns where OpenVR runtime is installed. */ +const char *VR_RuntimePath() +{ + static char rchBuffer[1024]; + uint32_t unRequiredSize; + if ( VR_GetRuntimePath( rchBuffer, sizeof( rchBuffer ), &unRequiredSize ) && unRequiredSize < sizeof( rchBuffer ) ) + { + return rchBuffer; + } + else + { + return nullptr; + } +} + + +/** Returns where OpenVR runtime is installed. */ +bool VR_GetRuntimePath( char *pchPathBuffer, uint32_t unBufferSize, uint32_t *punRequiredBufferSize ) +{ + // otherwise we need to do a bit more work + std::string sRuntimePath; + + *punRequiredBufferSize = 0; + + bool bReadPathRegistry = CVRPathRegistry_Public::GetPaths( &sRuntimePath, nullptr, nullptr, nullptr, nullptr ); + if ( !bReadPathRegistry ) + { + return false; + } + + // figure out where we're going to look for vrclient.dll + // see if the specified path actually exists. + if ( !Path_IsDirectory( sRuntimePath ) ) + { + return false; + } + + *punRequiredBufferSize = (uint32_t)sRuntimePath.size() + 1; + if ( sRuntimePath.size() >= unBufferSize ) + { + *pchPathBuffer = '\0'; + } + else + { + strcpy_safe( pchPathBuffer, unBufferSize, sRuntimePath.c_str() ); + } + + return true; +} + + +/** Returns the symbol version of an HMD error. */ +const char *VR_GetVRInitErrorAsSymbol( EVRInitError error ) +{ + std::lock_guard<std::recursive_mutex> lock( g_mutexSystem ); + + if( g_pHmdSystem ) + return g_pHmdSystem->GetIDForVRInitError( error ); + else + return GetIDForVRInitError( error ); +} + + +/** Returns the english string version of an HMD error. */ +const char *VR_GetVRInitErrorAsEnglishDescription( EVRInitError error ) +{ + std::lock_guard<std::recursive_mutex> lock( g_mutexSystem ); + + if ( g_pHmdSystem ) + return g_pHmdSystem->GetEnglishStringForHmdError( error ); + else + return GetEnglishStringForHmdError( error ); +} + + +VR_INTERFACE const char *VR_CALLTYPE VR_GetStringForHmdError( vr::EVRInitError error ); + +/** Returns the english string version of an HMD error. */ +const char *VR_GetStringForHmdError( EVRInitError error ) +{ + return VR_GetVRInitErrorAsEnglishDescription( error ); +} + +} + |