/* libFLAC - Free Lossless Audio Codec library
- * Copyright (C) 2001 Josh Coalson
+ * Copyright (C) 2001,2002,2003,2004,2005,2006,2007,2008,2009 Josh Coalson
*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
*
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
*
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the Xiph.org Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#include <assert.h>
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
#include "private/memory.h"
+#include "FLAC/assert.h"
+#include "share/alloc.h"
void *FLAC__memory_alloc_aligned(size_t bytes, void **aligned_address)
{
void *x;
- assert(0 != aligned_address);
+ FLAC__ASSERT(0 != aligned_address);
#ifdef FLAC__ALIGN_MALLOC_DATA
/* align on 32-byte (256-bit) boundary */
- x = malloc(bytes+31);
- *aligned_address = (void*)(((unsigned)x + 31) & -32);
+ x = safe_malloc_add_2op_(bytes, /*+*/31);
+#ifdef SIZEOF_VOIDP
+#if SIZEOF_VOIDP == 4
+ /* could do *aligned_address = x + ((unsigned) (32 - (((unsigned)x) & 31))) & 31; */
+ *aligned_address = (void*)(((unsigned)x + 31) & -32);
+#elif SIZEOF_VOIDP == 8
+ *aligned_address = (void*)(((FLAC__uint64)x + 31) & (FLAC__uint64)(-((FLAC__int64)32)));
#else
- x = malloc(bytes);
+# error Unsupported sizeof(void*)
+#endif
+#else
+ /* there's got to be a better way to do this right for all archs */
+ if(sizeof(void*) == sizeof(unsigned))
+ *aligned_address = (void*)(((unsigned)x + 31) & -32);
+ else if(sizeof(void*) == sizeof(FLAC__uint64))
+ *aligned_address = (void*)(((FLAC__uint64)x + 31) & (FLAC__uint64)(-((FLAC__int64)32)));
+ else
+ return 0;
+#endif
+#else
+ x = safe_malloc_(bytes);
*aligned_address = x;
#endif
return x;
}
-bool FLAC__memory_alloc_aligned_int32_array(unsigned elements, int32 **unaligned_pointer, int32 **aligned_pointer)
+FLAC__bool FLAC__memory_alloc_aligned_int32_array(size_t elements, FLAC__int32 **unaligned_pointer, FLAC__int32 **aligned_pointer)
{
- int32 *pa, *pu; /* aligned pointer, unaligned pointer */
-
- assert(elements > 0);
- assert(0 != unaligned_pointer);
- assert(0 != aligned_pointer);
- assert(unaligned_pointer != aligned_pointer);
+ FLAC__int32 *pu; /* unaligned pointer */
+ union { /* union needed to comply with C99 pointer aliasing rules */
+ FLAC__int32 *pa; /* aligned pointer */
+ void *pv; /* aligned pointer alias */
+ } u;
+
+ FLAC__ASSERT(elements > 0);
+ FLAC__ASSERT(0 != unaligned_pointer);
+ FLAC__ASSERT(0 != aligned_pointer);
+ FLAC__ASSERT(unaligned_pointer != aligned_pointer);
+
+ if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
+ return false;
- pu = (int32*)FLAC__memory_alloc_aligned(sizeof(int32) * elements, (void*)&pa);
+ pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
if(0 == pu) {
return false;
}
if(*unaligned_pointer != 0)
free(*unaligned_pointer);
*unaligned_pointer = pu;
- *aligned_pointer = pa;
+ *aligned_pointer = u.pa;
return true;
}
}
-bool FLAC__memory_alloc_aligned_uint32_array(unsigned elements, uint32 **unaligned_pointer, uint32 **aligned_pointer)
+FLAC__bool FLAC__memory_alloc_aligned_uint32_array(size_t elements, FLAC__uint32 **unaligned_pointer, FLAC__uint32 **aligned_pointer)
{
- uint32 *pa, *pu; /* aligned pointer, unaligned pointer */
-
- assert(elements > 0);
- assert(0 != unaligned_pointer);
- assert(0 != aligned_pointer);
- assert(unaligned_pointer != aligned_pointer);
+ FLAC__uint32 *pu; /* unaligned pointer */
+ union { /* union needed to comply with C99 pointer aliasing rules */
+ FLAC__uint32 *pa; /* aligned pointer */
+ void *pv; /* aligned pointer alias */
+ } u;
+
+ FLAC__ASSERT(elements > 0);
+ FLAC__ASSERT(0 != unaligned_pointer);
+ FLAC__ASSERT(0 != aligned_pointer);
+ FLAC__ASSERT(unaligned_pointer != aligned_pointer);
+
+ if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
+ return false;
- pu = (uint32*)FLAC__memory_alloc_aligned(sizeof(uint32) * elements, (void*)&pa);
+ pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
if(0 == pu) {
return false;
}
if(*unaligned_pointer != 0)
free(*unaligned_pointer);
*unaligned_pointer = pu;
- *aligned_pointer = pa;
+ *aligned_pointer = u.pa;
return true;
}
}
-bool FLAC__memory_alloc_aligned_unsigned_array(unsigned elements, unsigned **unaligned_pointer, unsigned **aligned_pointer)
+FLAC__bool FLAC__memory_alloc_aligned_uint64_array(size_t elements, FLAC__uint64 **unaligned_pointer, FLAC__uint64 **aligned_pointer)
{
- unsigned *pa, *pu; /* aligned pointer, unaligned pointer */
-
- assert(elements > 0);
- assert(0 != unaligned_pointer);
- assert(0 != aligned_pointer);
- assert(unaligned_pointer != aligned_pointer);
+ FLAC__uint64 *pu; /* unaligned pointer */
+ union { /* union needed to comply with C99 pointer aliasing rules */
+ FLAC__uint64 *pa; /* aligned pointer */
+ void *pv; /* aligned pointer alias */
+ } u;
+
+ FLAC__ASSERT(elements > 0);
+ FLAC__ASSERT(0 != unaligned_pointer);
+ FLAC__ASSERT(0 != aligned_pointer);
+ FLAC__ASSERT(unaligned_pointer != aligned_pointer);
+
+ if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
+ return false;
- pu = (unsigned*)FLAC__memory_alloc_aligned(sizeof(unsigned) * elements, (void*)&pa);
+ pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
if(0 == pu) {
return false;
}
if(*unaligned_pointer != 0)
free(*unaligned_pointer);
*unaligned_pointer = pu;
- *aligned_pointer = pa;
+ *aligned_pointer = u.pa;
return true;
}
}
-bool FLAC__memory_alloc_aligned_real_array(unsigned elements, real **unaligned_pointer, real **aligned_pointer)
+FLAC__bool FLAC__memory_alloc_aligned_unsigned_array(size_t elements, unsigned **unaligned_pointer, unsigned **aligned_pointer)
{
- real *pa, *pu; /* aligned pointer, unaligned pointer */
+ unsigned *pu; /* unaligned pointer */
+ union { /* union needed to comply with C99 pointer aliasing rules */
+ unsigned *pa; /* aligned pointer */
+ void *pv; /* aligned pointer alias */
+ } u;
+
+ FLAC__ASSERT(elements > 0);
+ FLAC__ASSERT(0 != unaligned_pointer);
+ FLAC__ASSERT(0 != aligned_pointer);
+ FLAC__ASSERT(unaligned_pointer != aligned_pointer);
+
+ if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
+ return false;
+
+ pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
+ if(0 == pu) {
+ return false;
+ }
+ else {
+ if(*unaligned_pointer != 0)
+ free(*unaligned_pointer);
+ *unaligned_pointer = pu;
+ *aligned_pointer = u.pa;
+ return true;
+ }
+}
- assert(elements > 0);
- assert(0 != unaligned_pointer);
- assert(0 != aligned_pointer);
- assert(unaligned_pointer != aligned_pointer);
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
- pu = (real*)FLAC__memory_alloc_aligned(sizeof(real) * elements, (void*)&pa);
+FLAC__bool FLAC__memory_alloc_aligned_real_array(size_t elements, FLAC__real **unaligned_pointer, FLAC__real **aligned_pointer)
+{
+ FLAC__real *pu; /* unaligned pointer */
+ union { /* union needed to comply with C99 pointer aliasing rules */
+ FLAC__real *pa; /* aligned pointer */
+ void *pv; /* aligned pointer alias */
+ } u;
+
+ FLAC__ASSERT(elements > 0);
+ FLAC__ASSERT(0 != unaligned_pointer);
+ FLAC__ASSERT(0 != aligned_pointer);
+ FLAC__ASSERT(unaligned_pointer != aligned_pointer);
+
+ if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
+ return false;
+
+ pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
if(0 == pu) {
return false;
}
if(*unaligned_pointer != 0)
free(*unaligned_pointer);
*unaligned_pointer = pu;
- *aligned_pointer = pa;
+ *aligned_pointer = u.pa;
return true;
}
}
+
+#endif
+
+void *safe_malloc_mul_2op_p(size_t size1, size_t size2)
+{
+ if(!size1 || !size2)
+ return malloc(1); /* malloc(0) is undefined; FLAC src convention is to always allocate */
+ if(size1 > SIZE_MAX / size2)
+ return 0;
+ return malloc(size1*size2);
+}
projects / platform / upstream / flac.git / blobdiff