зеркало из https://github.com/mozilla/gecko-dev.git
75 строки
2.2 KiB
C
75 строки
2.2 KiB
C
/*
|
|
* 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
|