diff options
Diffstat (limited to 'src/libFLAC/memory.c')
| -rw-r--r-- | src/libFLAC/memory.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/libFLAC/memory.c b/src/libFLAC/memory.c index 4d320a43..f30703d1 100644 --- a/src/libFLAC/memory.c +++ b/src/libFLAC/memory.c @@ -118,6 +118,35 @@ FLAC__bool FLAC__memory_alloc_aligned_uint32_array(size_t elements, FLAC__uint32 } } +FLAC__bool FLAC__memory_alloc_aligned_int64_array(size_t elements, FLAC__int64 **unaligned_pointer, FLAC__int64 **aligned_pointer) +{ + FLAC__int64 *pu; /* unaligned pointer */ + union { /* union needed to comply with C99 pointer aliasing rules */ + FLAC__int64 *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 */ |