kraken.h

#pragma once

#ifdef _MSC_VER
#include <SDKDDKVer.h>
#endif

#define _CRT_SECURE_NO_WARNINGS 1

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdint.h>
#include <limits.h>

#if defined(_MSC_VER)
	#include <Windows.h>
	#include <intrin.h>
	#undef max
	#undef min
#else
	#include <stddef.h>
	#ifdef __GNUC__
		// GNU C supports forcing inline, just via a different syntax.
        // disable this on MinGW compiler
		#define __forceinline inline __attribute__((always_inline))
	#else
		// Fall back to the standardized inline keyword for unknown dialects
		#define __forceinline inline
	#endif //__GNUC__

	#define _byteswap_ushort(x) __builtin_bswap16((uint16)(x))
	#define _byteswap_ulong(x) __builtin_bswap32((uint32)(x))
	#define _byteswap_uint64(x) __builtin_bswap64((uint64)(x))
	#define _BitScanForward(dst, x) (*(dst) = __builtin_ctz(x))
	#define _BitScanReverse(dst, x) (*(dst) = (__builtin_clz(x) ^ 31))

    // disable this on MinGW compiler
	static inline uint32_t _rotl(uint32_t x, int n) {
	  return (((x) << (n)) | ((x) >> (32-(n))));
	}
#endif

// Windows has this enabled implicitly (and uses different headers), GNU C compilers generally require passing an additional flag, so check for that first.
#ifdef __AVX__
#include <xmmintrin.h>
#endif

#ifdef __GNUC__
	#define UNUSED __attribute__((unused))
#elif defined(__cplusplus) && __cplusplus >= 201703L //C++17 attributes
	#define UNUSED [[maybe_unused]]
#else //unknown or incompatible method of indicating unused.
	#define UNUSED
#endif


#if defined(_MSC_VER)
    //  Microsoft
    #define EXPORT extern "C" __declspec(dllexport)
    #define IMPORT __declspec(dllimport)
#elif defined(__GNUC__)
    //  GCC
    #define EXPORT extern "C" __attribute__((visibility("default")))
    #define IMPORT
#else
    //  do nothing and hope for the best?
    #define EXPORT
    #define IMPORT
    #pragma warning Unknown dynamic link import/export semantics.
#endif

typedef uint8_t byte;
typedef uint8_t uint8;
typedef uint32_t uint32;
typedef uint64_t uint64;
typedef int64_t int64;
typedef int32_t int32;
typedef uint16_t uint16;
typedef int16_t int16;
typedef unsigned int uint;

EXPORT int Kraken_Decompress(const byte *src, size_t src_len, byte *dst, size_t dst_len);
EXPORT int Kraken_Compress(uint8* src, size_t src_len, byte* dst, int level);