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+/*
+ * The copyright in this software is being made available under the 2-clauses
+ * BSD License, included below. This software may be subject to other third
+ * party and contributor rights, including patent rights, and no such rights
+ * are granted under this license.
+ *
+ * Copyright (c) 2005, Herve Drolon, FreeImage Team
+ * Copyright (c) 2007, Callum Lerwick <seg@haxxed.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __OPJ_MALLOC_H
+#define __OPJ_MALLOC_H
+/**
+@file opj_malloc.h
+@brief Internal functions
+
+The functions in opj_malloc.h are internal utilities used for memory management.
+*/
+
+/** @defgroup MISC MISC - Miscellaneous internal functions */
+/*@{*/
+
+/** @name Exported functions */
+/*@{*/
+/* ----------------------------------------------------------------------- */
+
+/**
+Allocate an uninitialized memory block
+@param size Bytes to allocate
+@return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
+*/
+#ifdef ALLOC_PERF_OPT
+void * OPJ_CALLCONV opj_malloc(size_t size);
+#else
+/* prevent assertion on overflow for MSVC */
+#ifdef _MSC_VER
+#define opj_malloc(size) ((size_t)(size) >= (size_t)-0x100 ? NULL : malloc(size))
+#else
+#define opj_malloc(size) malloc(size)
+#endif
+#endif
+
+/**
+Allocate a memory block with elements initialized to 0
+@param num Blocks to allocate
+@param size Bytes per block to allocate
+@return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
+*/
+#ifdef ALLOC_PERF_OPT
+void * OPJ_CALLCONV opj_calloc(size_t _NumOfElements, size_t _SizeOfElements);
+#else
+/* prevent assertion on overflow for MSVC */
+#ifdef _MSC_VER
+#define opj_calloc(num, size) ((size_t)(num) != 0 && (size_t)(num) >= (size_t)-0x100 / (size_t)(size) ? NULL : calloc(num, size))
+#else
+#define opj_calloc(num, size) calloc(num, size)
+#endif
+#endif
+
+/**
+Allocate memory aligned to a 16 byte boundry
+@param size Bytes to allocate
+@return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
+*/
+/* FIXME: These should be set with cmake tests, but we're currently not requiring use of cmake */
+#ifdef _WIN32
+ /* Someone should tell the mingw people that their malloc.h ought to provide _mm_malloc() */
+ #ifdef __GNUC__
+ #include <mm_malloc.h>
+ #define HAVE_MM_MALLOC
+ #else /* MSVC, Intel C++ */
+ #include <malloc.h>
+ #ifdef _mm_malloc
+ #define HAVE_MM_MALLOC
+ #endif
+ #endif
+#else /* Not _WIN32 */
+ #if defined(__sun)
+ #define HAVE_MEMALIGN
+ #elif defined(__FreeBSD__)
+ #define HAVE_POSIX_MEMALIGN
+ /* Linux x86_64 and OSX always align allocations to 16 bytes */
+ #elif !defined(__amd64__) && !defined(__APPLE__) && !defined(_AIX)
+ #define HAVE_MEMALIGN
+ #include <malloc.h>
+ #endif
+#endif
+
+#define opj_aligned_malloc(size) malloc(size)
+#define opj_aligned_free(m) free(m)
+
+#ifdef HAVE_MM_MALLOC
+ #undef opj_aligned_malloc
+ #define opj_aligned_malloc(size) _mm_malloc(size, 16)
+ #undef opj_aligned_free
+ #define opj_aligned_free(m) _mm_free(m)
+#endif
+
+#ifdef HAVE_MEMALIGN
+ extern void* memalign(size_t, size_t);
+ #undef opj_aligned_malloc
+ #define opj_aligned_malloc(size) memalign(16, (size))
+ #undef opj_aligned_free
+ #define opj_aligned_free(m) free(m)
+#endif
+
+#ifdef HAVE_POSIX_MEMALIGN
+ #undef opj_aligned_malloc
+ extern int posix_memalign(void**, size_t, size_t);
+
+ static INLINE void* __attribute__ ((malloc)) opj_aligned_malloc(size_t size){
+ void* mem = NULL;
+ posix_memalign(&mem, 16, size);
+ return mem;
+ }
+ #undef opj_aligned_free
+ #define opj_aligned_free(m) free(m)
+#endif
+
+#ifdef ALLOC_PERF_OPT
+ #undef opj_aligned_malloc
+ #define opj_aligned_malloc(size) opj_malloc(size)
+ #undef opj_aligned_free
+ #define opj_aligned_free(m) opj_free(m)
+#endif
+
+/**
+Reallocate memory blocks.
+@param m Pointer to previously allocated memory block
+@param s New size in bytes
+@return Returns a void pointer to the reallocated (and possibly moved) memory block
+*/
+#ifdef ALLOC_PERF_OPT
+void * OPJ_CALLCONV opj_realloc(void * m, size_t s);
+#else
+/* prevent assertion on overflow for MSVC */
+#ifdef _MSC_VER
+#define opj_realloc(m, s) ((size_t)(s) >= (size_t)-0x100 ? NULL : realloc(m, s))
+#else
+#define opj_realloc(m, s) realloc(m, s)
+#endif
+#endif
+
+/**
+Deallocates or frees a memory block.
+@param m Previously allocated memory block to be freed
+*/
+#ifdef ALLOC_PERF_OPT
+void OPJ_CALLCONV opj_free(void * m);
+#else
+#define opj_free(m) free(m)
+#endif
+
+#ifdef __GNUC__
+#pragma GCC poison malloc calloc realloc free
+#endif
+
+/* ----------------------------------------------------------------------- */
+/*@}*/
+
+/*@}*/
+
+#endif /* __OPJ_MALLOC_H */
+