124 lines
3.6 KiB
C
124 lines
3.6 KiB
C
/*
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* Copyright (c) 2005, Hervé Drolon, FreeImage Team
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __J2K_LIB_H
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#define __J2K_LIB_H
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/**
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@file j2k_lib.h
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@brief Internal functions
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The functions in J2K_LIB.C are internal utilities mainly used for memory management.
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*/
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#ifndef __GNUC__
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#define __attribute__(x) /* */
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#endif
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/** @defgroup MISC MISC - Miscellaneous internal functions */
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/*@{*/
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/** @name Exported functions */
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/*@{*/
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/* ----------------------------------------------------------------------- */
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/**
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Difference in successive opj_clock() calls tells you the elapsed time
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@return Returns time in seconds
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*/
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double opj_clock(void);
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/**
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Allocate a memory block with elements initialized to 0
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@param size Bytes to allocate
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@return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
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*/
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void* __attribute__ ((malloc)) opj_malloc( size_t size );
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/**
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Allocate memory aligned to a 16 byte boundry
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@param size Bytes to allocate
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@return Returns a void pointer to the allocated space, or NULL if there is insufficient memory available
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*/
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#ifdef WIN32
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#ifdef __GNUC__
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#include <mm_malloc.h>
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#else /* MSVC, Intel C++ */
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#include <malloc.h>
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#endif
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#ifdef _mm_malloc
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#define opj_aligned_malloc(size) _mm_malloc(size, 16)
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#else
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#define opj_aligned_malloc(size) malloc(size)
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#endif
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#ifdef _mm_free
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#define opj_aligned_free(m) _mm_free(m)
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#else
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#define opj_aligned_free(m) free(m)
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#endif
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#else /* Not WIN32 */
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/* Linux x86_64 and OSX always align allocations to 16 bytes */
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#if defined(__amd64__) || defined(__APPLE__)
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#define opj_aligned_malloc(size) malloc(size)
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#else
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extern int posix_memalign (void **, size_t, size_t);
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static INLINE void* __attribute__ ((malloc)) opj_aligned_malloc(size_t size){
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void* mem = NULL;
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posix_memalign(&mem, 16, size);
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return mem;
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}
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#endif
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#define opj_aligned_free(m) free(m)
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#endif
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/**
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Reallocate memory blocks.
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@param memblock Pointer to previously allocated memory block
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@param size New size in bytes
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@return Returns a void pointer to the reallocated (and possibly moved) memory block
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*/
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void* __attribute__ ((malloc)) opj_realloc( void *memblock, size_t size );
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/**
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Deallocates or frees a memory block.
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@param memblock Previously allocated memory block to be freed
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*/
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void opj_free( void *memblock );
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/* ----------------------------------------------------------------------- */
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/*@}*/
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/*@}*/
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#endif /* __J2K_LIB_H */
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