misc/winutils/include/libavutil/mem.h
author unc0rr
Thu, 21 Feb 2013 11:12:42 +0400
changeset 8535 6652a8c8ce89
parent 7813 7ac83d79b897
permissions -rw-r--r--
Merge
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
7813
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
     1
/*
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
     2
 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
     3
 *
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
     4
 * This file is part of Libav.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
     5
 *
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
     6
 * Libav is free software; you can redistribute it and/or
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
     7
 * modify it under the terms of the GNU Lesser General Public
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
     8
 * License as published by the Free Software Foundation; either
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
     9
 * version 2.1 of the License, or (at your option) any later version.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    10
 *
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    11
 * Libav is distributed in the hope that it will be useful,
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    12
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    13
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    14
 * Lesser General Public License for more details.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    15
 *
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    16
 * You should have received a copy of the GNU Lesser General Public
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    17
 * License along with Libav; if not, write to the Free Software
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    18
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    19
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    20
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    21
/**
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    22
 * @file
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    23
 * memory handling functions
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    24
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    25
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    26
#ifndef AVUTIL_MEM_H
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    27
#define AVUTIL_MEM_H
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    28
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    29
#include <limits.h>
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    30
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    31
#include "attributes.h"
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    32
#include "avutil.h"
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    33
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    34
/**
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    35
 * @addtogroup lavu_mem
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    36
 * @{
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    37
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    38
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    39
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    40
#if defined(__ICC) && __ICC < 1200 || defined(__SUNPRO_C)
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    41
    #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    42
    #define DECLARE_ASM_CONST(n,t,v)    const t __attribute__ ((aligned (n))) v
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    43
#elif defined(__TI_COMPILER_VERSION__)
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    44
    #define DECLARE_ALIGNED(n,t,v)                      \
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    45
        AV_PRAGMA(DATA_ALIGN(v,n))                      \
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    46
        t __attribute__((aligned(n))) v
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    47
    #define DECLARE_ASM_CONST(n,t,v)                    \
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    48
        AV_PRAGMA(DATA_ALIGN(v,n))                      \
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    49
        static const t __attribute__((aligned(n))) v
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    50
#elif defined(__GNUC__)
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    51
    #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    52
    #define DECLARE_ASM_CONST(n,t,v)    static const t av_used __attribute__ ((aligned (n))) v
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    53
#elif defined(_MSC_VER)
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    54
    #define DECLARE_ALIGNED(n,t,v)      __declspec(align(n)) t v
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    55
    #define DECLARE_ASM_CONST(n,t,v)    __declspec(align(n)) static const t v
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    56
#else
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    57
    #define DECLARE_ALIGNED(n,t,v)      t v
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    58
    #define DECLARE_ASM_CONST(n,t,v)    static const t v
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    59
#endif
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    60
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    61
#if AV_GCC_VERSION_AT_LEAST(3,1)
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    62
    #define av_malloc_attrib __attribute__((__malloc__))
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    63
#else
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    64
    #define av_malloc_attrib
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    65
#endif
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    66
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    67
#if AV_GCC_VERSION_AT_LEAST(4,3)
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    68
    #define av_alloc_size(...) __attribute__((alloc_size(__VA_ARGS__)))
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    69
#else
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    70
    #define av_alloc_size(...)
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    71
#endif
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    72
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    73
/**
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    74
 * Allocate a block of size bytes with alignment suitable for all
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    75
 * memory accesses (including vectors if available on the CPU).
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    76
 * @param size Size in bytes for the memory block to be allocated.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    77
 * @return Pointer to the allocated block, NULL if the block cannot
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    78
 * be allocated.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    79
 * @see av_mallocz()
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    80
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    81
void *av_malloc(size_t size) av_malloc_attrib av_alloc_size(1);
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    82
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    83
/**
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    84
 * Helper function to allocate a block of size * nmemb bytes with
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    85
 * using av_malloc()
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    86
 * @param nmemb Number of elements
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    87
 * @param size Size of the single element
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    88
 * @return Pointer to the allocated block, NULL if the block cannot
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    89
 * be allocated.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    90
 * @see av_malloc()
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    91
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    92
av_alloc_size(1, 2) static inline void *av_malloc_array(size_t nmemb, size_t size)
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    93
{
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    94
    if (size <= 0 || nmemb >= INT_MAX / size)
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    95
        return NULL;
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    96
    return av_malloc(nmemb * size);
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    97
}
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    98
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
    99
/**
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   100
 * Allocate or reallocate a block of memory.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   101
 * If ptr is NULL and size > 0, allocate a new block. If
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   102
 * size is zero, free the memory block pointed to by ptr.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   103
 * @param ptr Pointer to a memory block already allocated with
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   104
 * av_malloc(z)() or av_realloc() or NULL.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   105
 * @param size Size in bytes for the memory block to be allocated or
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   106
 * reallocated.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   107
 * @return Pointer to a newly reallocated block or NULL if the block
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   108
 * cannot be reallocated or the function is used to free the memory block.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   109
 * @see av_fast_realloc()
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   110
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   111
void *av_realloc(void *ptr, size_t size) av_alloc_size(2);
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   112
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   113
/**
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   114
 * Free a memory block which has been allocated with av_malloc(z)() or
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   115
 * av_realloc().
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   116
 * @param ptr Pointer to the memory block which should be freed.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   117
 * @note ptr = NULL is explicitly allowed.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   118
 * @note It is recommended that you use av_freep() instead.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   119
 * @see av_freep()
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   120
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   121
void av_free(void *ptr);
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   122
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   123
/**
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   124
 * Allocate a block of size bytes with alignment suitable for all
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   125
 * memory accesses (including vectors if available on the CPU) and
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   126
 * zero all the bytes of the block.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   127
 * @param size Size in bytes for the memory block to be allocated.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   128
 * @return Pointer to the allocated block, NULL if it cannot be allocated.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   129
 * @see av_malloc()
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   130
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   131
void *av_mallocz(size_t size) av_malloc_attrib av_alloc_size(1);
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   132
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   133
/**
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   134
 * Helper function to allocate a block of size * nmemb bytes with
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   135
 * using av_mallocz()
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   136
 * @param nmemb Number of elements
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   137
 * @param size Size of the single element
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   138
 * @return Pointer to the allocated block, NULL if the block cannot
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   139
 * be allocated.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   140
 * @see av_mallocz()
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   141
 * @see av_malloc_array()
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   142
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   143
av_alloc_size(1, 2) static inline void *av_mallocz_array(size_t nmemb, size_t size)
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   144
{
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   145
    if (size <= 0 || nmemb >= INT_MAX / size)
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   146
        return NULL;
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   147
    return av_mallocz(nmemb * size);
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   148
}
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   149
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   150
/**
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   151
 * Duplicate the string s.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   152
 * @param s string to be duplicated
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   153
 * @return Pointer to a newly allocated string containing a
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   154
 * copy of s or NULL if the string cannot be allocated.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   155
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   156
char *av_strdup(const char *s) av_malloc_attrib;
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   157
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   158
/**
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   159
 * Free a memory block which has been allocated with av_malloc(z)() or
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   160
 * av_realloc() and set the pointer pointing to it to NULL.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   161
 * @param ptr Pointer to the pointer to the memory block which should
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   162
 * be freed.
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   163
 * @see av_free()
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   164
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   165
void av_freep(void *ptr);
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   166
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   167
/**
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   168
 * @}
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   169
 */
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   170
7ac83d79b897 support video recording on windows with automation and headers
koda
parents:
diff changeset
   171
#endif /* AVUTIL_MEM_H */