src/libFLAC/memory.c

   1 /* libFLAC - Free Lossless Audio Codec library
   2  * Copyright (C) 2001  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 <assert.h>
  21 #include <stdio.h> /*@@@ for stderr */
  22 #include "private/memory.h"
  23
  24 void *FLAC__memory_alloc_aligned(size_t bytes, void **aligned_address)
  25 {
  26         void *x;
  27
  28         assert(0 != aligned_address);
  29
  30 #ifdef FLAC__ALIGN_MALLOC_DATA
  31         /* align on 32-byte (256-bit) boundary */
  32         x = malloc(bytes+31);
  33         *aligned_address = (void*)(((unsigned)x + 31) & -32);
  34 fprintf(stderr, "FLAC__memory_alloc(unaligned=%p, aligned=%p)\n",x,*aligned_address);
  35 #else
  36         x = malloc(bytes);
  37         *aligned_address = x;
  38 #endif
  39         return x;
  40 }
  41
  42 bool FLAC__memory_alloc_aligned_int32_array(unsigned elements, int32 **unaligned_pointer, int32 **aligned_pointer)
  43 {
  44         int32 *pa, *pu; /* aligned pointer, unaligned pointer */
  45
  46         assert(elements > 0);
  47         assert(0 != unaligned_pointer);
  48         assert(0 != aligned_pointer);
  49         assert(unaligned_pointer != aligned_pointer);
  50
  51         pu = (int32*)FLAC__memory_alloc_aligned(sizeof(int32) * elements, (void*)&pa);
  52         if(0 == pu) {
  53                 return false;
  54         }
  55         else {
  56                 if(*unaligned_pointer != 0)
  57                         free(*unaligned_pointer);
  58                 *unaligned_pointer = pu;
  59                 *aligned_pointer = pa;
  60                 return true;
  61         }
  62 }
  63
  64 bool FLAC__memory_alloc_aligned_uint32_array(unsigned elements, uint32 **unaligned_pointer, uint32 **aligned_pointer)
  65 {
  66         uint32 *pa, *pu; /* aligned pointer, unaligned pointer */
  67
  68         assert(elements > 0);
  69         assert(0 != unaligned_pointer);
  70         assert(0 != aligned_pointer);
  71         assert(unaligned_pointer != aligned_pointer);
  72
  73         pu = (uint32*)FLAC__memory_alloc_aligned(sizeof(uint32) * elements, (void*)&pa);
  74         if(0 == pu) {
  75                 return false;
  76         }
  77         else {
  78                 if(*unaligned_pointer != 0)
  79                         free(*unaligned_pointer);
  80                 *unaligned_pointer = pu;
  81                 *aligned_pointer = pa;
  82                 return true;
  83         }
  84 }
  85
  86 bool FLAC__memory_alloc_aligned_unsigned_array(unsigned elements, unsigned **unaligned_pointer, unsigned **aligned_pointer)
  87 {
  88         unsigned *pa, *pu; /* aligned pointer, unaligned pointer */
  89
  90         assert(elements > 0);
  91         assert(0 != unaligned_pointer);
  92         assert(0 != aligned_pointer);
  93         assert(unaligned_pointer != aligned_pointer);
  94
  95         pu = (unsigned*)FLAC__memory_alloc_aligned(sizeof(unsigned) * elements, (void*)&pa);
  96         if(0 == pu) {
  97                 return false;
  98         }
  99         else {
 100                 if(*unaligned_pointer != 0)
 101                         free(*unaligned_pointer);
 102                 *unaligned_pointer = pu;
 103                 *aligned_pointer = pa;
 104                 return true;
 105         }
 106 }
 107
 108 bool FLAC__memory_alloc_aligned_real_array(unsigned elements, real **unaligned_pointer, real **aligned_pointer)
 109 {
 110         real *pa, *pu; /* aligned pointer, unaligned pointer */
 111
 112         assert(elements > 0);
 113         assert(0 != unaligned_pointer);
 114         assert(0 != aligned_pointer);
 115         assert(unaligned_pointer != aligned_pointer);
 116
 117         pu = (real*)FLAC__memory_alloc_aligned(sizeof(real) * elements, (void*)&pa);
 118         if(0 == pu) {
 119                 return false;
 120         }
 121         else {
 122                 if(*unaligned_pointer != 0)
 123                         free(*unaligned_pointer);
 124                 *unaligned_pointer = pu;
 125                 *aligned_pointer = pa;
 126                 return true;
 127         }
 128 }