#ifndef __khrplatform_h_
#define __khrplatform_h_

/*
 * * Copyright (c) 2008-2018 The Khronos Group Inc. *
 *
 * * Permission is hereby granted, free of charge, to any person obtaining a *
 * copy of this software and/or associated documentation files (the *
 * "Materials"), to deal in the Materials without restriction, including *
 * without limitation the rights to use, copy, modify, merge, publish, *
 * distribute, sublicense, and/or sell copies of the Materials, and to * permit
 * persons to whom the Materials are furnished to do so, subject to * the
 * following conditions: *
 *
 * * The above copyright notice and this permission notice shall be included *
 * in all copies or substantial portions of the Materials. *
 *
 * * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, *
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN
 * NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY * CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * MATERIALS OR THE
 * USE OR OTHER DEALINGS IN THE MATERIALS.
 */

/*
 * Khronos platform-specific types and definitions.
 *
 * The master copy of khrplatform.h is maintained in the Khronos EGL Registry
 * repository at https://github.com/KhronosGroup/EGL-Registry The last semantic
 * modification to khrplatform.h was at commit ID:
 * 67a3e0864c2d75ea5287b9f3d2eb74a745936692
 *
 * Adopters may modify this file to suit their platform. Adopters are
 * encouraged to submit platform specific modifications to the Khronos group so
 * that they can be included in future versions of this file. Please submit
 * changes by filing pull requests or issues on the EGL Registry repository
 * linked above.
 *
 *
 * See the Implementer's Guidelines for information about where this file
 * should be located on your system and for more details of its use:
 * http://www.khronos.org/registry/implementers_guide.pdf
 *
 * This file should be included as #include <KHR/khrplatform.h> by Khronos
 * client API header files that use its types and defines.
 *
 * The types in khrplatform.h should only be used to define API-specific types.
 *
 * Types defined in khrplatform.h: khronos_int8_t              signed   8  bit
 * khronos_uint8_t             unsigned 8  bit khronos_int16_t signed   16 bit
 * khronos_uint16_t            unsigned 16 bit khronos_int32_t signed   32 bit
 * khronos_uint32_t            unsigned 32 bit khronos_int64_t signed   64 bit
 * khronos_uint64_t            unsigned 64 bit khronos_intptr_t signed   same
 * number of bits as a pointer khronos_uintptr_t unsigned same number of bits
 * as a pointer khronos_ssize_t             signed size khronos_usize_t
 * unsigned size khronos_float_t signed   32 bit floating point
 * khronos_time_ns_t           unsigned 64 bit time in nanoseconds
 * khronos_utime_nanoseconds_t unsigned time interval or absolute time in
 * nanoseconds khronos_stime_nanoseconds_t signed time interval in nanoseconds
 * khronos_boolean_enum_t      enumerated boolean type. This should only be
 * used as a base type when a client API's boolean type is an enum. Client APIs
 * which use an integer or other type for booleans cannot use this as the base
 * type for their boolean.
 *
 * Tokens defined in khrplatform.h:
 *
 * KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
 *
 * KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
 * KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
 *
 * Calling convention macros defined in this file: KHRONOS_APICALL
 * KHRONOS_APIENTRY KHRONOS_APIATTRIBUTES
 *
 * These may be used in function prototypes as:
 *
 * KHRONOS_APICALL void KHRONOS_APIENTRY funcname( int arg1, int arg2)
 * KHRONOS_APIATTRIBUTES;
 */

#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
#define KHRONOS_STATIC 1
#endif

/*-------------------------------------------------------------------------
 * Definition of KHRONOS_APICALL
 *-------------------------------------------------------------------------
 * This precedes the return type of the function in the function prototype.
 */
#if defined(KHRONOS_STATIC)
/*
 * If the preprocessor constant KHRONOS_STATIC is defined, make the header
 * compatible with static linking.
 */
#define KHRONOS_APICALL
#elif defined(_WIN32)
#define KHRONOS_APICALL __declspec(dllimport)
#elif defined (__SYMBIAN32__)
#define KHRONOS_APICALL IMPORT_C
#elif defined(__ANDROID__)
#define KHRONOS_APICALL __attribute__((visibility("default")))
#else
#define KHRONOS_APICALL
#endif

/*-------------------------------------------------------------------------
 * Definition of KHRONOS_APIENTRY
 *-------------------------------------------------------------------------
 * This follows the return type of the function  and precedes the function
 * name in the function prototype.
 */
#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
/* Win32 but not WinCE */
#define KHRONOS_APIENTRY __stdcall
#else
#define KHRONOS_APIENTRY
#endif

/*-------------------------------------------------------------------------
 * Definition of KHRONOS_APIATTRIBUTES
 *-------------------------------------------------------------------------
 * This follows the closing parenthesis of the function prototype arguments.
 */
#if defined (__ARMCC_2__)
#define KHRONOS_APIATTRIBUTES __softfp
#else
#define KHRONOS_APIATTRIBUTES
#endif

/*-------------------------------------------------------------------------
 * basic type definitions
 *-----------------------------------------------------------------------*/
#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)


/*
 * Using <stdint.h>
 */
#include <stdint.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64   1
#define KHRONOS_SUPPORT_FLOAT   1
/*
 * To support platform where unsigned long cannot be used interchangeably with
 * inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t.
 * Ideally, we could just use (u)intptr_t everywhere, but this could result in
 * ABI breakage if khronos_uintptr_t is changed from unsigned long to unsigned
 * long long or similar (this results in different C++ name mangling). To avoid
 * changes for existing platforms, we restrict usage of intptr_t to platforms
 * where the size of a pointer is larger than the size of long.
 */
#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__)
#if __SIZEOF_POINTER__ > __SIZEOF_LONG__
#define KHRONOS_USE_INTPTR_T
#endif
#endif

#elif defined(__VMS ) || defined(__sgi)

/*
 * Using <inttypes.h>
 */
#include <inttypes.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64   1
#define KHRONOS_SUPPORT_FLOAT   1

#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)

/*
 * Win32
 */
typedef __int32 khronos_int32_t;
typedef unsigned __int32 khronos_uint32_t;
typedef __int64 khronos_int64_t;
typedef unsigned __int64 khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64   1
#define KHRONOS_SUPPORT_FLOAT   1

#elif defined(__sun__) || defined(__digital__)

/*
 * Sun or Digital
 */
typedef int khronos_int32_t;
typedef unsigned int khronos_uint32_t;
#if defined(__arch64__) || defined(_LP64)
typedef long int khronos_int64_t;
typedef unsigned long int khronos_uint64_t;
#else
typedef long long int khronos_int64_t;
typedef unsigned long long int khronos_uint64_t;
#endif				/* __arch64__ */
#define KHRONOS_SUPPORT_INT64   1
#define KHRONOS_SUPPORT_FLOAT   1

#elif 0

/*
 * Hypothetical platform with no float or int64 support
 */
typedef int khronos_int32_t;
typedef unsigned int khronos_uint32_t;
#define KHRONOS_SUPPORT_INT64   0
#define KHRONOS_SUPPORT_FLOAT   0

#else

/*
 * Generic fallback
 */
#include <stdint.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64   1
#define KHRONOS_SUPPORT_FLOAT   1

#endif


/*
 * Types that are (so far) the same on all platforms
 */
typedef signed char khronos_int8_t;
typedef unsigned char khronos_uint8_t;
typedef signed short int khronos_int16_t;
typedef unsigned short int khronos_uint16_t;

/*
 * Types that differ between LLP64 and LP64 architectures - in LLP64, pointers
 * are 64 bits, but 'long' is still 32 bits. Win64 appears to be the only LLP64
 * architecture in current use.
 */
#ifdef KHRONOS_USE_INTPTR_T
typedef intptr_t khronos_intptr_t;
typedef uintptr_t khronos_uintptr_t;
#elif defined(_WIN64)
typedef signed long long int khronos_intptr_t;
typedef unsigned long long int khronos_uintptr_t;
#else
typedef signed long int khronos_intptr_t;
typedef unsigned long int khronos_uintptr_t;
#endif

#if defined(_WIN64)
typedef signed long long int khronos_ssize_t;
typedef unsigned long long int khronos_usize_t;
#else
typedef signed long int khronos_ssize_t;
typedef unsigned long int khronos_usize_t;
#endif

#if KHRONOS_SUPPORT_FLOAT
/*
 * Float type
 */
typedef float khronos_float_t;
#endif

#if KHRONOS_SUPPORT_INT64
/*
 * Time types
 *
 * These types can be used to represent a time interval in nanoseconds or an
 * absolute Unadjusted System Time.  Unadjusted System Time is the number of
 * nanoseconds since some arbitrary system event (e.g. since the last time the
 * system booted).  The Unadjusted System Time is an unsigned 64 bit value that
 * wraps back to 0 every 584 years.  Time intervals may be either signed or
 * unsigned.
 */
typedef khronos_uint64_t khronos_utime_nanoseconds_t;
typedef khronos_int64_t khronos_stime_nanoseconds_t;
#endif

/*
 * Dummy value used to pad enum types to 32 bits.
 */
#ifndef KHRONOS_MAX_ENUM
#define KHRONOS_MAX_ENUM 0x7FFFFFFF
#endif

/*
 * Enumerated boolean type
 *
 * Values other than zero should be considered to be true.  Therefore
 * comparisons should not be made against KHRONOS_TRUE.
 */
typedef enum {
	KHRONOS_FALSE = 0,
		KHRONOS_TRUE = 1,
		KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
} khronos_boolean_enum_t;

#endif				/* __khrplatform_h_ */