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Josh Coalsonde469cf2001-05-11 23:54:27 +00001/* libFLAC - Free Lossless Audio Codec library
Josh Coalson0395dac2006-04-25 06:59:33 +00002 * Copyright (C) 2001,2002,2003,2004,2005,2006 Josh Coalson
Josh Coalsonde469cf2001-05-11 23:54:27 +00003 *
Josh Coalsonafd81072003-01-31 23:34:56 +00004 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
Josh Coalsonde469cf2001-05-11 23:54:27 +00007 *
Josh Coalsonafd81072003-01-31 23:34:56 +00008 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
Josh Coalsonde469cf2001-05-11 23:54:27 +000010 *
Josh Coalsonafd81072003-01-31 23:34:56 +000011 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * - Neither the name of the Xiph.org Foundation nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Josh Coalsonde469cf2001-05-11 23:54:27 +000030 */
31
Josh Coalsonb1ec7962006-05-24 04:41:36 +000032#if HAVE_CONFIG_H
33# include <config.h>
34#endif
35
Josh Coalsonde469cf2001-05-11 23:54:27 +000036#include "private/memory.h"
Josh Coalson1b689822001-05-31 20:11:02 +000037#include "FLAC/assert.h"
Josh Coalsonde469cf2001-05-11 23:54:27 +000038
Josh Coalson02f39002001-05-13 05:15:47 +000039void *FLAC__memory_alloc_aligned(size_t bytes, void **aligned_address)
Josh Coalsonde469cf2001-05-11 23:54:27 +000040{
41 void *x;
42
Josh Coalson1b689822001-05-31 20:11:02 +000043 FLAC__ASSERT(0 != aligned_address);
Josh Coalsonde469cf2001-05-11 23:54:27 +000044
45#ifdef FLAC__ALIGN_MALLOC_DATA
46 /* align on 32-byte (256-bit) boundary */
47 x = malloc(bytes+31);
48 *aligned_address = (void*)(((unsigned)x + 31) & -32);
Josh Coalsonde469cf2001-05-11 23:54:27 +000049#else
50 x = malloc(bytes);
51 *aligned_address = x;
52#endif
53 return x;
54}
Josh Coalson02f39002001-05-13 05:15:47 +000055
Josh Coalson77e3f312001-06-23 03:03:24 +000056FLAC__bool FLAC__memory_alloc_aligned_int32_array(unsigned elements, FLAC__int32 **unaligned_pointer, FLAC__int32 **aligned_pointer)
Josh Coalson02f39002001-05-13 05:15:47 +000057{
Josh Coalson5e8e7332004-10-07 00:22:03 +000058 FLAC__int32 *pu; /* unaligned pointer */
59 union { /* union needed to comply with C99 pointer aliasing rules */
60 FLAC__int32 *pa; /* aligned pointer */
61 void *pv; /* aligned pointer alias */
62 } u;
Josh Coalson02f39002001-05-13 05:15:47 +000063
Josh Coalson1b689822001-05-31 20:11:02 +000064 FLAC__ASSERT(elements > 0);
65 FLAC__ASSERT(0 != unaligned_pointer);
66 FLAC__ASSERT(0 != aligned_pointer);
67 FLAC__ASSERT(unaligned_pointer != aligned_pointer);
Josh Coalson02f39002001-05-13 05:15:47 +000068
Josh Coalson5e8e7332004-10-07 00:22:03 +000069 pu = (FLAC__int32*)FLAC__memory_alloc_aligned(sizeof(FLAC__int32) * elements, &u.pv);
Josh Coalson02f39002001-05-13 05:15:47 +000070 if(0 == pu) {
71 return false;
72 }
73 else {
74 if(*unaligned_pointer != 0)
75 free(*unaligned_pointer);
76 *unaligned_pointer = pu;
Josh Coalson5e8e7332004-10-07 00:22:03 +000077 *aligned_pointer = u.pa;
Josh Coalson02f39002001-05-13 05:15:47 +000078 return true;
79 }
80}
81
Josh Coalson77e3f312001-06-23 03:03:24 +000082FLAC__bool FLAC__memory_alloc_aligned_uint32_array(unsigned elements, FLAC__uint32 **unaligned_pointer, FLAC__uint32 **aligned_pointer)
Josh Coalson02f39002001-05-13 05:15:47 +000083{
Josh Coalson5e8e7332004-10-07 00:22:03 +000084 FLAC__uint32 *pu; /* unaligned pointer */
85 union { /* union needed to comply with C99 pointer aliasing rules */
86 FLAC__uint32 *pa; /* aligned pointer */
87 void *pv; /* aligned pointer alias */
88 } u;
Josh Coalson02f39002001-05-13 05:15:47 +000089
Josh Coalson1b689822001-05-31 20:11:02 +000090 FLAC__ASSERT(elements > 0);
91 FLAC__ASSERT(0 != unaligned_pointer);
92 FLAC__ASSERT(0 != aligned_pointer);
93 FLAC__ASSERT(unaligned_pointer != aligned_pointer);
Josh Coalson02f39002001-05-13 05:15:47 +000094
Josh Coalson5e8e7332004-10-07 00:22:03 +000095 pu = (FLAC__uint32*)FLAC__memory_alloc_aligned(sizeof(FLAC__uint32) * elements, &u.pv);
Josh Coalson02f39002001-05-13 05:15:47 +000096 if(0 == pu) {
97 return false;
98 }
99 else {
100 if(*unaligned_pointer != 0)
101 free(*unaligned_pointer);
102 *unaligned_pointer = pu;
Josh Coalson5e8e7332004-10-07 00:22:03 +0000103 *aligned_pointer = u.pa;
Josh Coalson02f39002001-05-13 05:15:47 +0000104 return true;
105 }
106}
107
Josh Coalsonbf9dd762001-07-16 18:04:52 +0000108FLAC__bool FLAC__memory_alloc_aligned_uint64_array(unsigned elements, FLAC__uint64 **unaligned_pointer, FLAC__uint64 **aligned_pointer)
109{
Josh Coalson5e8e7332004-10-07 00:22:03 +0000110 FLAC__uint64 *pu; /* unaligned pointer */
111 union { /* union needed to comply with C99 pointer aliasing rules */
112 FLAC__uint64 *pa; /* aligned pointer */
113 void *pv; /* aligned pointer alias */
114 } u;
Josh Coalsonbf9dd762001-07-16 18:04:52 +0000115
116 FLAC__ASSERT(elements > 0);
117 FLAC__ASSERT(0 != unaligned_pointer);
118 FLAC__ASSERT(0 != aligned_pointer);
119 FLAC__ASSERT(unaligned_pointer != aligned_pointer);
120
Josh Coalson5e8e7332004-10-07 00:22:03 +0000121 pu = (FLAC__uint64*)FLAC__memory_alloc_aligned(sizeof(FLAC__uint64) * elements, &u.pv);
Josh Coalsonbf9dd762001-07-16 18:04:52 +0000122 if(0 == pu) {
123 return false;
124 }
125 else {
126 if(*unaligned_pointer != 0)
127 free(*unaligned_pointer);
128 *unaligned_pointer = pu;
Josh Coalson5e8e7332004-10-07 00:22:03 +0000129 *aligned_pointer = u.pa;
Josh Coalsonbf9dd762001-07-16 18:04:52 +0000130 return true;
131 }
132}
133
Josh Coalson77e3f312001-06-23 03:03:24 +0000134FLAC__bool FLAC__memory_alloc_aligned_unsigned_array(unsigned elements, unsigned **unaligned_pointer, unsigned **aligned_pointer)
Josh Coalson02f39002001-05-13 05:15:47 +0000135{
Josh Coalson5e8e7332004-10-07 00:22:03 +0000136 unsigned *pu; /* unaligned pointer */
137 union { /* union needed to comply with C99 pointer aliasing rules */
138 unsigned *pa; /* aligned pointer */
139 void *pv; /* aligned pointer alias */
140 } u;
Josh Coalson02f39002001-05-13 05:15:47 +0000141
Josh Coalson1b689822001-05-31 20:11:02 +0000142 FLAC__ASSERT(elements > 0);
143 FLAC__ASSERT(0 != unaligned_pointer);
144 FLAC__ASSERT(0 != aligned_pointer);
145 FLAC__ASSERT(unaligned_pointer != aligned_pointer);
Josh Coalson02f39002001-05-13 05:15:47 +0000146
Josh Coalson5e8e7332004-10-07 00:22:03 +0000147 pu = (unsigned*)FLAC__memory_alloc_aligned(sizeof(unsigned) * elements, &u.pv);
Josh Coalson02f39002001-05-13 05:15:47 +0000148 if(0 == pu) {
149 return false;
150 }
151 else {
152 if(*unaligned_pointer != 0)
153 free(*unaligned_pointer);
154 *unaligned_pointer = pu;
Josh Coalson5e8e7332004-10-07 00:22:03 +0000155 *aligned_pointer = u.pa;
Josh Coalson02f39002001-05-13 05:15:47 +0000156 return true;
157 }
158}
159
Josh Coalson5f2b46d2004-11-09 01:34:01 +0000160#ifndef FLAC__INTEGER_ONLY_LIBRARY
161
Josh Coalson77e3f312001-06-23 03:03:24 +0000162FLAC__bool FLAC__memory_alloc_aligned_real_array(unsigned elements, FLAC__real **unaligned_pointer, FLAC__real **aligned_pointer)
Josh Coalson02f39002001-05-13 05:15:47 +0000163{
Josh Coalson5e8e7332004-10-07 00:22:03 +0000164 FLAC__real *pu; /* unaligned pointer */
165 union { /* union needed to comply with C99 pointer aliasing rules */
166 FLAC__real *pa; /* aligned pointer */
167 void *pv; /* aligned pointer alias */
168 } u;
Josh Coalson02f39002001-05-13 05:15:47 +0000169
Josh Coalson1b689822001-05-31 20:11:02 +0000170 FLAC__ASSERT(elements > 0);
171 FLAC__ASSERT(0 != unaligned_pointer);
172 FLAC__ASSERT(0 != aligned_pointer);
173 FLAC__ASSERT(unaligned_pointer != aligned_pointer);
Josh Coalson02f39002001-05-13 05:15:47 +0000174
Josh Coalson5e8e7332004-10-07 00:22:03 +0000175 pu = (FLAC__real*)FLAC__memory_alloc_aligned(sizeof(FLAC__real) * elements, &u.pv);
Josh Coalson02f39002001-05-13 05:15:47 +0000176 if(0 == pu) {
177 return false;
178 }
179 else {
180 if(*unaligned_pointer != 0)
181 free(*unaligned_pointer);
182 *unaligned_pointer = pu;
Josh Coalson5e8e7332004-10-07 00:22:03 +0000183 *aligned_pointer = u.pa;
Josh Coalson02f39002001-05-13 05:15:47 +0000184 return true;
185 }
186}
Josh Coalson5f2b46d2004-11-09 01:34:01 +0000187
188#endif