diff options
Diffstat (limited to 'third_party/aom/aom_mem/aom_mem.c')
-rw-r--r-- | third_party/aom/aom_mem/aom_mem.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/third_party/aom/aom_mem/aom_mem.c b/third_party/aom/aom_mem/aom_mem.c new file mode 100644 index 000000000..66a0c08de --- /dev/null +++ b/third_party/aom/aom_mem/aom_mem.c @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#define __AOM_MEM_C__ + +#include "aom_mem.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "include/aom_mem_intrnl.h" +#include "aom/aom_integer.h" + +static size_t GetAlignedMallocSize(size_t size, size_t align) { + return size + align - 1 + ADDRESS_STORAGE_SIZE; +} + +static size_t *GetMallocAddressLocation(void *const mem) { + return ((size_t *)mem) - 1; +} + +static void SetActualMallocAddress(void *const mem, + const void *const malloc_addr) { + size_t *const malloc_addr_location = GetMallocAddressLocation(mem); + *malloc_addr_location = (size_t)malloc_addr; +} + +static void *GetActualMallocAddress(void *const mem) { + const size_t *const malloc_addr_location = GetMallocAddressLocation(mem); + return (void *)(*malloc_addr_location); +} + +void *aom_memalign(size_t align, size_t size) { + void *x = NULL; + const size_t aligned_size = GetAlignedMallocSize(size, align); + void *const addr = malloc(aligned_size); + if (addr) { + x = align_addr((unsigned char *)addr + ADDRESS_STORAGE_SIZE, align); + SetActualMallocAddress(x, addr); + } + return x; +} + +void *aom_malloc(size_t size) { return aom_memalign(DEFAULT_ALIGNMENT, size); } + +void *aom_calloc(size_t num, size_t size) { + const size_t total_size = num * size; + void *const x = aom_malloc(total_size); + if (x) memset(x, 0, total_size); + return x; +} + +void aom_free(void *memblk) { + if (memblk) { + void *addr = GetActualMallocAddress(memblk); + free(addr); + } +} + +#if CONFIG_HIGHBITDEPTH +void *aom_memset16(void *dest, int val, size_t length) { + size_t i; + uint16_t *dest16 = (uint16_t *)dest; + for (i = 0; i < length; i++) *dest16++ = val; + return dest; +} +#endif // CONFIG_HIGHBITDEPTH |