src/libFLAC/memory.c

   1 /* libFLAC - Free Lossless Audio Codec library
   2  * Copyright (C) 2001,2002,2003  Josh Coalson
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA  02111-1307, USA.
  18  */
  19
  20 #include "private/memory.h"
  21 #include "FLAC/assert.h"
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 void *FLAC__memory_alloc_aligned(size_t bytes, void **aligned_address)
  28 {
  29         void *x;
  30
  31         FLAC__ASSERT(0 != aligned_address);
  32
  33 #ifdef FLAC__ALIGN_MALLOC_DATA
  34         /* align on 32-byte (256-bit) boundary */
  35         x = malloc(bytes+31);
  36         *aligned_address = (void*)(((unsigned)x + 31) & -32);
  37 #else
  38         x = malloc(bytes);
  39         *aligned_address = x;
  40 #endif
  41         return x;
  42 }
  43
  44 FLAC__bool FLAC__memory_alloc_aligned_int32_array(unsigned elements, FLAC__int32 **unaligned_pointer, FLAC__int32 **aligned_pointer)
  45 {
  46         FLAC__int32 *pa, *pu; /* aligned pointer, unaligned pointer */
  47
  48         FLAC__ASSERT(elements > 0);
  49         FLAC__ASSERT(0 != unaligned_pointer);
  50         FLAC__ASSERT(0 != aligned_pointer);
  51         FLAC__ASSERT(unaligned_pointer != aligned_pointer);
  52
  53         pu = (FLAC__int32*)FLAC__memory_alloc_aligned(sizeof(FLAC__int32) * elements, (void**)&pa);
  54         if(0 == pu) {
  55                 return false;
  56         }
  57         else {
  58                 if(*unaligned_pointer != 0)
  59                         free(*unaligned_pointer);
  60                 *unaligned_pointer = pu;
  61                 *aligned_pointer = pa;
  62                 return true;
  63         }
  64 }
  65
  66 FLAC__bool FLAC__memory_alloc_aligned_uint32_array(unsigned elements, FLAC__uint32 **unaligned_pointer, FLAC__uint32 **aligned_pointer)
  67 {
  68         FLAC__uint32 *pa, *pu; /* aligned pointer, unaligned pointer */
  69
  70         FLAC__ASSERT(elements > 0);
  71         FLAC__ASSERT(0 != unaligned_pointer);
  72         FLAC__ASSERT(0 != aligned_pointer);
  73         FLAC__ASSERT(unaligned_pointer != aligned_pointer);
  74
  75         pu = (FLAC__uint32*)FLAC__memory_alloc_aligned(sizeof(FLAC__uint32) * elements, (void**)&pa);
  76         if(0 == pu) {
  77                 return false;
  78         }
  79         else {
  80                 if(*unaligned_pointer != 0)
  81                         free(*unaligned_pointer);
  82                 *unaligned_pointer = pu;
  83                 *aligned_pointer = pa;
  84                 return true;
  85         }
  86 }
  87
  88 FLAC__bool FLAC__memory_alloc_aligned_uint64_array(unsigned elements, FLAC__uint64 **unaligned_pointer, FLAC__uint64 **aligned_pointer)
  89 {
  90         FLAC__uint64 *pa, *pu; /* aligned pointer, unaligned pointer */
  91
  92         FLAC__ASSERT(elements > 0);
  93         FLAC__ASSERT(0 != unaligned_pointer);
  94         FLAC__ASSERT(0 != aligned_pointer);
  95         FLAC__ASSERT(unaligned_pointer != aligned_pointer);
  96
  97         pu = (FLAC__uint64*)FLAC__memory_alloc_aligned(sizeof(FLAC__uint64) * elements, (void**)&pa);
  98         if(0 == pu) {
  99                 return false;
 100         }
 101         else {
 102                 if(*unaligned_pointer != 0)
 103                         free(*unaligned_pointer);
 104                 *unaligned_pointer = pu;
 105                 *aligned_pointer = pa;
 106                 return true;
 107         }
 108 }
 109
 110 FLAC__bool FLAC__memory_alloc_aligned_unsigned_array(unsigned elements, unsigned **unaligned_pointer, unsigned **aligned_pointer)
 111 {
 112         unsigned *pa, *pu; /* aligned pointer, unaligned pointer */
 113
 114         FLAC__ASSERT(elements > 0);
 115         FLAC__ASSERT(0 != unaligned_pointer);
 116         FLAC__ASSERT(0 != aligned_pointer);
 117         FLAC__ASSERT(unaligned_pointer != aligned_pointer);
 118
 119         pu = (unsigned*)FLAC__memory_alloc_aligned(sizeof(unsigned) * elements, (void**)&pa);
 120         if(0 == pu) {
 121                 return false;
 122         }
 123         else {
 124                 if(*unaligned_pointer != 0)
 125                         free(*unaligned_pointer);
 126                 *unaligned_pointer = pu;
 127                 *aligned_pointer = pa;
 128                 return true;
 129         }
 130 }
 131
 132 FLAC__bool FLAC__memory_alloc_aligned_real_array(unsigned elements, FLAC__real **unaligned_pointer, FLAC__real **aligned_pointer)
 133 {
 134         FLAC__real *pa, *pu; /* aligned pointer, unaligned pointer */
 135
 136         FLAC__ASSERT(elements > 0);
 137         FLAC__ASSERT(0 != unaligned_pointer);
 138         FLAC__ASSERT(0 != aligned_pointer);
 139         FLAC__ASSERT(unaligned_pointer != aligned_pointer);
 140
 141         pu = (FLAC__real*)FLAC__memory_alloc_aligned(sizeof(FLAC__real) * elements, (void**)&pa);
 142         if(0 == pu) {
 143                 return false;
 144         }
 145         else {
 146                 if(*unaligned_pointer != 0)
 147                         free(*unaligned_pointer);
 148                 *unaligned_pointer = pu;
 149                 *aligned_pointer = pa;
 150                 return true;
 151         }
 152 }