/**
 * Author......: See docs/credits.txt
 * License.....: MIT
 */

#ifndef _EXT_NVAPI_H
#define _EXT_NVAPI_H

/**
 * Declarations from nvapi.h and subheaders
 */

#define NVAPI_INTERFACE extern NvAPI_Status

typedef unsigned int NvU32;
typedef   signed int NvS32;

#define NV_DECLARE_HANDLE(name) struct name##__ { int unused; }; typedef struct name##__ *name

NV_DECLARE_HANDLE(NvPhysicalGpuHandle);            // A single physical GPU

#define NVAPI_GENERIC_STRING_MAX    4096
#define NVAPI_LONG_STRING_MAX       256
#define NVAPI_SHORT_STRING_MAX      64

typedef char NvAPI_String[NVAPI_GENERIC_STRING_MAX];
typedef char NvAPI_LongString[NVAPI_LONG_STRING_MAX];
typedef char NvAPI_ShortString[NVAPI_SHORT_STRING_MAX];

#define MAKE_NVAPI_VERSION(typeName,ver) (NvU32)(sizeof(typeName) | ((ver)<<16))

#define NVAPI_MAX_PHYSICAL_GPUS     64

typedef enum _NvAPI_Status
{
    NVAPI_OK                                    =  0,      // Success. Request is completed.
    NVAPI_ERROR                                 = -1,      // Generic error
    NVAPI_LIBRARY_NOT_FOUND                     = -2,      // NVAPI support library cannot be loaded.
    NVAPI_NO_IMPLEMENTATION                     = -3,      // not implemented in current driver installation
    NVAPI_API_NOT_INITIALIZED                   = -4,      // NvAPI_Initialize has not been called (successfully)
    NVAPI_INVALID_ARGUMENT                      = -5,      // The argument/parameter value is not valid or NULL.
    NVAPI_NVIDIA_DEVICE_NOT_FOUND               = -6,      // No NVIDIA display driver, or NVIDIA GPU driving a display, was found.
    NVAPI_END_ENUMERATION                       = -7,      // No more items to enumerate
    NVAPI_INVALID_HANDLE                        = -8,      // Invalid handle
    NVAPI_INCOMPATIBLE_STRUCT_VERSION           = -9,      // An argument's structure version is not supported
    NVAPI_HANDLE_INVALIDATED                    = -10,     // The handle is no longer valid (likely due to GPU or display re-configuration)
    NVAPI_OPENGL_CONTEXT_NOT_CURRENT            = -11,     // No NVIDIA OpenGL context is current (but needs to be)
    NVAPI_INVALID_POINTER                       = -14,     // An invalid pointer, usually NULL, was passed as a parameter
    NVAPI_NO_GL_EXPERT                          = -12,     // OpenGL Expert is not supported by the current drivers
    NVAPI_INSTRUMENTATION_DISABLED              = -13,     // OpenGL Expert is supported, but driver instrumentation is currently disabled
    NVAPI_NO_GL_NSIGHT                          = -15,     // OpenGL does not support Nsight

    NVAPI_EXPECTED_LOGICAL_GPU_HANDLE           = -100,    // Expected a logical GPU handle for one or more parameters
    NVAPI_EXPECTED_PHYSICAL_GPU_HANDLE          = -101,    // Expected a physical GPU handle for one or more parameters
    NVAPI_EXPECTED_DISPLAY_HANDLE               = -102,    // Expected an NV display handle for one or more parameters
    NVAPI_INVALID_COMBINATION                   = -103,    // The combination of parameters is not valid.
    NVAPI_NOT_SUPPORTED                         = -104,    // Requested feature is not supported in the selected GPU
    NVAPI_PORTID_NOT_FOUND                      = -105,    // No port ID was found for the I2C transaction
    NVAPI_EXPECTED_UNATTACHED_DISPLAY_HANDLE    = -106,    // Expected an unattached display handle as one of the input parameters.
    NVAPI_INVALID_PERF_LEVEL                    = -107,    // Invalid perf level
    NVAPI_DEVICE_BUSY                           = -108,    // Device is busy; request not fulfilled
    NVAPI_NV_PERSIST_FILE_NOT_FOUND             = -109,    // NV persist file is not found
    NVAPI_PERSIST_DATA_NOT_FOUND                = -110,    // NV persist data is not found
    NVAPI_EXPECTED_TV_DISPLAY                   = -111,    // Expected a TV output display
    NVAPI_EXPECTED_TV_DISPLAY_ON_DCONNECTOR     = -112,    // Expected a TV output on the D Connector - HDTV_EIAJ4120.
    NVAPI_NO_ACTIVE_SLI_TOPOLOGY                = -113,    // SLI is not active on this device.
    NVAPI_SLI_RENDERING_MODE_NOTALLOWED         = -114,    // Setup of SLI rendering mode is not possible right now.
    NVAPI_EXPECTED_DIGITAL_FLAT_PANEL           = -115,    // Expected a digital flat panel.
    NVAPI_ARGUMENT_EXCEED_MAX_SIZE              = -116,    // Argument exceeds the expected size.
    NVAPI_DEVICE_SWITCHING_NOT_ALLOWED          = -117,    // Inhibit is ON due to one of the flags in NV_GPU_DISPLAY_CHANGE_INHIBIT or SLI active.
    NVAPI_TESTING_CLOCKS_NOT_SUPPORTED          = -118,    // Testing of clocks is not supported.
    NVAPI_UNKNOWN_UNDERSCAN_CONFIG              = -119,    // The specified underscan config is from an unknown source (e.g. INF)
    NVAPI_TIMEOUT_RECONFIGURING_GPU_TOPO        = -120,    // Timeout while reconfiguring GPUs
    NVAPI_DATA_NOT_FOUND                        = -121,    // Requested data was not found
    NVAPI_EXPECTED_ANALOG_DISPLAY               = -122,    // Expected an analog display
    NVAPI_NO_VIDLINK                            = -123,    // No SLI video bridge is present
    NVAPI_REQUIRES_REBOOT                       = -124,    // NVAPI requires a reboot for the settings to take effect
    NVAPI_INVALID_HYBRID_MODE                   = -125,    // The function is not supported with the current Hybrid mode.
    NVAPI_MIXED_TARGET_TYPES                    = -126,    // The target types are not all the same
    NVAPI_SYSWOW64_NOT_SUPPORTED                = -127,    // The function is not supported from 32-bit on a 64-bit system.
    NVAPI_IMPLICIT_SET_GPU_TOPOLOGY_CHANGE_NOT_ALLOWED = -128,    // There is no implicit GPU topology active. Use NVAPI_SetHybridMode to change topology.
    NVAPI_REQUEST_USER_TO_CLOSE_NON_MIGRATABLE_APPS = -129,      // Prompt the user to close all non-migratable applications.
    NVAPI_OUT_OF_MEMORY                         = -130,    // Could not allocate sufficient memory to complete the call.
    NVAPI_WAS_STILL_DRAWING                     = -131,    // The previous operation that is transferring information to or from this surface is incomplete.
    NVAPI_FILE_NOT_FOUND                        = -132,    // The file was not found.
    NVAPI_TOO_MANY_UNIQUE_STATE_OBJECTS         = -133,    // There are too many unique instances of a particular type of state object.
    NVAPI_INVALID_CALL                          = -134,    // The method call is invalid. For example, a method's parameter may not be a valid pointer.
    NVAPI_D3D10_1_LIBRARY_NOT_FOUND             = -135,    // d3d10_1.dll cannot be loaded.
    NVAPI_FUNCTION_NOT_FOUND                    = -136,    // Couldn't find the function in the loaded DLL.
    NVAPI_INVALID_USER_PRIVILEGE                = -137,    // Current User is not Admin.
    NVAPI_EXPECTED_NON_PRIMARY_DISPLAY_HANDLE   = -138,    // The handle corresponds to GDIPrimary.
    NVAPI_EXPECTED_COMPUTE_GPU_HANDLE           = -139,    // Setting Physx GPU requires that the GPU is compute-capable.
    NVAPI_STEREO_NOT_INITIALIZED                = -140,    // The Stereo part of NVAPI failed to initialize completely. Check if the stereo driver is installed.
    NVAPI_STEREO_REGISTRY_ACCESS_FAILED         = -141,    // Access to stereo-related registry keys or values has failed.
    NVAPI_STEREO_REGISTRY_PROFILE_TYPE_NOT_SUPPORTED = -142, // The given registry profile type is not supported.
    NVAPI_STEREO_REGISTRY_VALUE_NOT_SUPPORTED   = -143,    // The given registry value is not supported.
    NVAPI_STEREO_NOT_ENABLED                    = -144,    // Stereo is not enabled and the function needed it to execute completely.
    NVAPI_STEREO_NOT_TURNED_ON                  = -145,    // Stereo is not turned on and the function needed it to execute completely.
    NVAPI_STEREO_INVALID_DEVICE_INTERFACE       = -146,    // Invalid device interface.
    NVAPI_STEREO_PARAMETER_OUT_OF_RANGE         = -147,    // Separation percentage or JPEG image capture quality is out of [0-100] range.
    NVAPI_STEREO_FRUSTUM_ADJUST_MODE_NOT_SUPPORTED = -148, // The given frustum adjust mode is not supported.
    NVAPI_TOPO_NOT_POSSIBLE                     = -149,    // The mosaic topology is not possible given the current state of the hardware.
    NVAPI_MODE_CHANGE_FAILED                    = -150,    // An attempt to do a display resolution mode change has failed.
    NVAPI_D3D11_LIBRARY_NOT_FOUND               = -151,    // d3d11.dll/d3d11_beta.dll cannot be loaded.
    NVAPI_INVALID_ADDRESS                       = -152,    // Address is outside of valid range.
    NVAPI_STRING_TOO_SMALL                      = -153,    // The pre-allocated string is too small to hold the result.
    NVAPI_MATCHING_DEVICE_NOT_FOUND             = -154,    // The input does not match any of the available devices.
    NVAPI_DRIVER_RUNNING                        = -155,    // Driver is running.
    NVAPI_DRIVER_NOTRUNNING                     = -156,    // Driver is not running.
    NVAPI_ERROR_DRIVER_RELOAD_REQUIRED          = -157,    // A driver reload is required to apply these settings.
    NVAPI_SET_NOT_ALLOWED                       = -158,    // Intended setting is not allowed.
    NVAPI_ADVANCED_DISPLAY_TOPOLOGY_REQUIRED    = -159,    // Information can't be returned due to "advanced display topology".
    NVAPI_SETTING_NOT_FOUND                     = -160,    // Setting is not found.
    NVAPI_SETTING_SIZE_TOO_LARGE                = -161,    // Setting size is too large.
    NVAPI_TOO_MANY_SETTINGS_IN_PROFILE          = -162,    // There are too many settings for a profile.
    NVAPI_PROFILE_NOT_FOUND                     = -163,    // Profile is not found.
    NVAPI_PROFILE_NAME_IN_USE                   = -164,    // Profile name is duplicated.
    NVAPI_PROFILE_NAME_EMPTY                    = -165,    // Profile name is empty.
    NVAPI_EXECUTABLE_NOT_FOUND                  = -166,    // Application not found in the Profile.
    NVAPI_EXECUTABLE_ALREADY_IN_USE             = -167,    // Application already exists in the other profile.
    NVAPI_DATATYPE_MISMATCH                     = -168,    // Data Type mismatch
    NVAPI_PROFILE_REMOVED                       = -169,    // The profile passed as parameter has been removed and is no longer valid.
    NVAPI_UNREGISTERED_RESOURCE                 = -170,    // An unregistered resource was passed as a parameter.
    NVAPI_ID_OUT_OF_RANGE                       = -171,    // The DisplayId corresponds to a display which is not within the normal outputId range.
    NVAPI_DISPLAYCONFIG_VALIDATION_FAILED       = -172,    // Display topology is not valid so the driver cannot do a mode set on this configuration.
    NVAPI_DPMST_CHANGED                         = -173,    // Display Port Multi-Stream topology has been changed.
    NVAPI_INSUFFICIENT_BUFFER                   = -174,    // Input buffer is insufficient to hold the contents.
    NVAPI_ACCESS_DENIED                         = -175,    // No access to the caller.
    NVAPI_MOSAIC_NOT_ACTIVE                     = -176,    // The requested action cannot be performed without Mosaic being enabled.
    NVAPI_SHARE_RESOURCE_RELOCATED              = -177,    // The surface is relocated away from video memory.
    NVAPI_REQUEST_USER_TO_DISABLE_DWM           = -178,    // The user should disable DWM before calling NvAPI.
    NVAPI_D3D_DEVICE_LOST                       = -179,    // D3D device status is D3DERR_DEVICELOST or D3DERR_DEVICENOTRESET - the user has to reset the device.
    NVAPI_INVALID_CONFIGURATION                 = -180,    // The requested action cannot be performed in the current state.
    NVAPI_STEREO_HANDSHAKE_NOT_DONE             = -181,    // Call failed as stereo handshake not completed.
    NVAPI_EXECUTABLE_PATH_IS_AMBIGUOUS          = -182,    // The path provided was too short to determine the correct NVDRS_APPLICATION
    NVAPI_DEFAULT_STEREO_PROFILE_IS_NOT_DEFINED = -183,    // Default stereo profile is not currently defined
    NVAPI_DEFAULT_STEREO_PROFILE_DOES_NOT_EXIST = -184,    // Default stereo profile does not exist
    NVAPI_CLUSTER_ALREADY_EXISTS                = -185,    // A cluster is already defined with the given configuration.
    NVAPI_DPMST_DISPLAY_ID_EXPECTED             = -186,    // The input display id is not that of a multi stream enabled connector or a display device in a multi stream topology
    NVAPI_INVALID_DISPLAY_ID                    = -187,    // The input display id is not valid or the monitor associated to it does not support the current operation
    NVAPI_STREAM_IS_OUT_OF_SYNC                 = -188,    // While playing secure audio stream, stream goes out of sync
    NVAPI_INCOMPATIBLE_AUDIO_DRIVER             = -189,    // Older audio driver version than required
    NVAPI_VALUE_ALREADY_SET                     = -190,    // Value already set, setting again not allowed.
    NVAPI_TIMEOUT                               = -191,    // Requested operation timed out
    NVAPI_GPU_WORKSTATION_FEATURE_INCOMPLETE    = -192,    // The requested workstation feature set has incomplete driver internal allocation resources
    NVAPI_STEREO_INIT_ACTIVATION_NOT_DONE       = -193,    // Call failed because InitActivation was not called.
    NVAPI_SYNC_NOT_ACTIVE                       = -194,    // The requested action cannot be performed without Sync being enabled.
    NVAPI_SYNC_MASTER_NOT_FOUND                 = -195,    // The requested action cannot be performed without Sync Master being enabled.
    NVAPI_INVALID_SYNC_TOPOLOGY                 = -196,    // Invalid displays passed in the NV_GSYNC_DISPLAY pointer.
    NVAPI_ECID_SIGN_ALGO_UNSUPPORTED            = -197,    // The specified signing algorithm is not supported. Either an incorrect value was entered or the current installed driver/hardware does not support the input value.
    NVAPI_ECID_KEY_VERIFICATION_FAILED          = -198,    // The encrypted public key verification has failed.
    NVAPI_FIRMWARE_OUT_OF_DATE                  = -199,    // The device's firmware is out of date.
    NVAPI_FIRMWARE_REVISION_NOT_SUPPORTED       = -200,    // The device's firmware is not supported.
} NvAPI_Status;

typedef struct struct_NV_GPU_PERF_POLICIES_INFO_PARAMS_V1
{
  // total size (of memset) is always: 76 = 0x4c

  NvU32 version;

  NvU32 a;
  NvU32 info_value;

  unsigned char x[64];

} NV_GPU_PERF_POLICIES_INFO_PARAMS_V1;

typedef struct struct_NV_GPU_PERF_POLICIES_STATUS_PARAMS_V1
{
  // total size (of memset) is always: 1360 = 0x550

  NvU32 version;
  NvU32 info_value;

  NvU32 a;
  NvU32 b;

  NvU32 throttle;

  unsigned char x[1340];

} NV_GPU_PERF_POLICIES_STATUS_PARAMS_V1;

typedef struct struct_NvLevel
{
  NvS32 Level;
  NvS32 Policy;

} NvLevel;

NVAPI_INTERFACE NvAPI_QueryInterface (unsigned int offset);
NVAPI_INTERFACE NvAPI_Initialize (void);
NVAPI_INTERFACE NvAPI_Unload (void);
NVAPI_INTERFACE NvAPI_GetErrorMessage (NvAPI_Status nr,NvAPI_ShortString szDesc);
NVAPI_INTERFACE NvAPI_EnumPhysicalGPUs (NvPhysicalGpuHandle nvGPUHandle[NVAPI_MAX_PHYSICAL_GPUS], NvU32 *pGpuCount);
NVAPI_INTERFACE NvAPI_GPU_GetPerfPoliciesInfo (NvPhysicalGpuHandle hPhysicalGpu, NV_GPU_PERF_POLICIES_INFO_PARAMS_V1 *perfPolicies_info);
NVAPI_INTERFACE NvAPI_GPU_GetPerfPoliciesStatus (NvPhysicalGpuHandle hPhysicalGpu, NV_GPU_PERF_POLICIES_STATUS_PARAMS_V1 *perfPolicies_status);
NVAPI_INTERFACE NvAPI_GPU_GetBusId (NvPhysicalGpuHandle hPhysicalGpu, NvU32 *pBusId);
NVAPI_INTERFACE NvAPI_GPU_GetBusSlotId (NvPhysicalGpuHandle hPhysicalGpu, NvU32 *pBusSlotId);

/*
 * End of declarations from nvapi.h and subheaders
 **/

typedef NvPhysicalGpuHandle HM_ADAPTER_NVAPI;

#if defined(_WIN32) || defined(__WIN32__)
#define NVAPI_API_CALL __stdcall
#else
#define NVAPI_API_CALL
#endif

typedef int *(*NVAPI_API_CALL NVAPI_QUERYINTERFACE) (unsigned int);
typedef int (*NVAPI_API_CALL NVAPI_INITIALIZE) (void);
typedef int (*NVAPI_API_CALL NVAPI_UNLOAD) (void);
typedef int (*NVAPI_API_CALL NVAPI_GETERRORMESSAGE) (NvAPI_Status, NvAPI_ShortString);
typedef int (*NVAPI_API_CALL NVAPI_ENUMPHYSICALGPUS) (NvPhysicalGpuHandle nvGPUHandle[NVAPI_MAX_PHYSICAL_GPUS], NvU32 *);
typedef int (*NVAPI_API_CALL NVAPI_GPU_GETPERFPOLICIESINFO) (NvPhysicalGpuHandle, NV_GPU_PERF_POLICIES_INFO_PARAMS_V1 *);
typedef int (*NVAPI_API_CALL NVAPI_GPU_GETPERFPOLICIESSTATUS) (NvPhysicalGpuHandle, NV_GPU_PERF_POLICIES_STATUS_PARAMS_V1 *);
typedef int (*NVAPI_API_CALL NVAPI_GPU_GETBUSID) (NvPhysicalGpuHandle, NvU32 *);
typedef int (*NVAPI_API_CALL NVAPI_GPU_GETBUSSLOTID) (NvPhysicalGpuHandle, NvU32 *);

#if defined (_POSIX)
typedef void *NVAPI_LIB;
#else
typedef HINSTANCE NVAPI_LIB;
#endif

typedef struct hm_nvapi_lib
{
  NVAPI_LIB lib;

  NVAPI_QUERYINTERFACE nvapi_QueryInterface;
  NVAPI_INITIALIZE NvAPI_Initialize;
  NVAPI_UNLOAD NvAPI_Unload;
  NVAPI_GETERRORMESSAGE NvAPI_GetErrorMessage;
  NVAPI_ENUMPHYSICALGPUS NvAPI_EnumPhysicalGPUs;
  NVAPI_GPU_GETPERFPOLICIESINFO NvAPI_GPU_GetPerfPoliciesInfo;
  NVAPI_GPU_GETPERFPOLICIESSTATUS NvAPI_GPU_GetPerfPoliciesStatus;
  NVAPI_GPU_GETBUSID NvAPI_GPU_GetBusId;
  NVAPI_GPU_GETBUSSLOTID NvAPI_GPU_GetBusSlotId;

} hm_nvapi_lib_t;

typedef hm_nvapi_lib_t NVAPI_PTR;

#endif // _EXT_NVAPI_H
