1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2001,2002,2003,2004 Josh Coalson
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * - 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.
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.
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.
32 #include "private/memory.h"
33 #include "FLAC/assert.h"
39 void *FLAC__memory_alloc_aligned(size_t bytes, void **aligned_address)
43 FLAC__ASSERT(0 != aligned_address);
45 #ifdef FLAC__ALIGN_MALLOC_DATA
46 /* align on 32-byte (256-bit) boundary */
48 *aligned_address = (void*)(((unsigned)x + 31) & -32);
56 FLAC__bool FLAC__memory_alloc_aligned_int32_array(unsigned elements, FLAC__int32 **unaligned_pointer, FLAC__int32 **aligned_pointer)
58 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 */
64 FLAC__ASSERT(elements > 0);
65 FLAC__ASSERT(0 != unaligned_pointer);
66 FLAC__ASSERT(0 != aligned_pointer);
67 FLAC__ASSERT(unaligned_pointer != aligned_pointer);
69 pu = (FLAC__int32*)FLAC__memory_alloc_aligned(sizeof(FLAC__int32) * elements, &u.pv);
74 if(*unaligned_pointer != 0)
75 free(*unaligned_pointer);
76 *unaligned_pointer = pu;
77 *aligned_pointer = u.pa;
82 FLAC__bool FLAC__memory_alloc_aligned_uint32_array(unsigned elements, FLAC__uint32 **unaligned_pointer, FLAC__uint32 **aligned_pointer)
84 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 */
90 FLAC__ASSERT(elements > 0);
91 FLAC__ASSERT(0 != unaligned_pointer);
92 FLAC__ASSERT(0 != aligned_pointer);
93 FLAC__ASSERT(unaligned_pointer != aligned_pointer);
95 pu = (FLAC__uint32*)FLAC__memory_alloc_aligned(sizeof(FLAC__uint32) * elements, &u.pv);
100 if(*unaligned_pointer != 0)
101 free(*unaligned_pointer);
102 *unaligned_pointer = pu;
103 *aligned_pointer = u.pa;
108 FLAC__bool FLAC__memory_alloc_aligned_uint64_array(unsigned elements, FLAC__uint64 **unaligned_pointer, FLAC__uint64 **aligned_pointer)
110 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 */
116 FLAC__ASSERT(elements > 0);
117 FLAC__ASSERT(0 != unaligned_pointer);
118 FLAC__ASSERT(0 != aligned_pointer);
119 FLAC__ASSERT(unaligned_pointer != aligned_pointer);
121 pu = (FLAC__uint64*)FLAC__memory_alloc_aligned(sizeof(FLAC__uint64) * elements, &u.pv);
126 if(*unaligned_pointer != 0)
127 free(*unaligned_pointer);
128 *unaligned_pointer = pu;
129 *aligned_pointer = u.pa;
134 FLAC__bool FLAC__memory_alloc_aligned_unsigned_array(unsigned elements, unsigned **unaligned_pointer, unsigned **aligned_pointer)
136 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 */
142 FLAC__ASSERT(elements > 0);
143 FLAC__ASSERT(0 != unaligned_pointer);
144 FLAC__ASSERT(0 != aligned_pointer);
145 FLAC__ASSERT(unaligned_pointer != aligned_pointer);
147 pu = (unsigned*)FLAC__memory_alloc_aligned(sizeof(unsigned) * elements, &u.pv);
152 if(*unaligned_pointer != 0)
153 free(*unaligned_pointer);
154 *unaligned_pointer = pu;
155 *aligned_pointer = u.pa;
160 #ifndef FLAC__INTEGER_ONLY_LIBRARY
162 FLAC__bool FLAC__memory_alloc_aligned_real_array(unsigned elements, FLAC__real **unaligned_pointer, FLAC__real **aligned_pointer)
164 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 */
170 FLAC__ASSERT(elements > 0);
171 FLAC__ASSERT(0 != unaligned_pointer);
172 FLAC__ASSERT(0 != aligned_pointer);
173 FLAC__ASSERT(unaligned_pointer != aligned_pointer);
175 pu = (FLAC__real*)FLAC__memory_alloc_aligned(sizeof(FLAC__real) * elements, &u.pv);
180 if(*unaligned_pointer != 0)
181 free(*unaligned_pointer);
182 *unaligned_pointer = pu;
183 *aligned_pointer = u.pa;