| /* libFLAC - Free Lossless Audio Codec library |
| * Copyright (C) 2001-2009 Josh Coalson |
| * Copyright (C) 2011-2016 Xiph.Org Foundation |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - 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. |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include <config.h> |
| #endif |
| |
| #ifdef HAVE_STDINT_H |
| #include <stdint.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; |
| |
| FLAC__ASSERT(0 != aligned_address); |
| |
| #ifdef FLAC__ALIGN_MALLOC_DATA |
| /* align on 32-byte (256-bit) boundary */ |
| x = safe_malloc_add_2op_(bytes, /*+*/31L); |
| *aligned_address = (void*)(((uintptr_t)x + 31L) & -32L); |
| #else |
| x = safe_malloc_(bytes); |
| *aligned_address = x; |
| #endif |
| return x; |
| } |
| |
| FLAC__bool FLAC__memory_alloc_aligned_int32_array(size_t elements, FLAC__int32 **unaligned_pointer, FLAC__int32 **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 = 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; |
| } |
| } |
| |
| FLAC__bool FLAC__memory_alloc_aligned_uint32_array(size_t elements, FLAC__uint32 **unaligned_pointer, FLAC__uint32 **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 = 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; |
| } |
| } |
| |
| FLAC__bool FLAC__memory_alloc_aligned_uint64_array(size_t elements, FLAC__uint64 **unaligned_pointer, FLAC__uint64 **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 = 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; |
| } |
| } |
| |
| FLAC__bool FLAC__memory_alloc_aligned_unsigned_array(size_t elements, unsigned **unaligned_pointer, unsigned **aligned_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; |
| } |
| } |
| |
| #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| |
| 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; |
| } |
| else { |
| if(*unaligned_pointer != 0) |
| free(*unaligned_pointer); |
| *unaligned_pointer = pu; |
| *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); |
| } |