1/*
2 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#ifndef VPX_PORTS_MEM_H_
12#define VPX_PORTS_MEM_H_
13
14#include "vpx_config.h"
15#include "vpx/vpx_integer.h"
16
17#if (defined(__GNUC__) && __GNUC__) || defined(__SUNPRO_C)
18#define DECLARE_ALIGNED(n, typ, val) typ val __attribute__((aligned(n)))
19#elif defined(_MSC_VER)
20#define DECLARE_ALIGNED(n, typ, val) __declspec(align(n)) typ val
21#else
22#warning No alignment directives known for this compiler.
23#define DECLARE_ALIGNED(n, typ, val) typ val
24#endif
25
26#if defined(__GNUC__) && __GNUC__ >= 4 && !defined(_WIN32)
27#define DECLARE_PROTECTED(decl) decl __attribute__((visibility("protected")))
28#else
29#define DECLARE_PROTECTED(decl) decl
30#endif
31
32#if HAVE_NEON && defined(_MSC_VER)
33#define __builtin_prefetch(x)
34#endif
35
36/* Shift down with rounding */
37#define ROUND_POWER_OF_TWO(value, n) (((value) + (1 << ((n)-1))) >> (n))
38#define ROUND64_POWER_OF_TWO(value, n) (((value) + (1ULL << ((n)-1))) >> (n))
39
40#define ALIGN_POWER_OF_TWO(value, n) \
41  (((value) + ((1 << (n)) - 1)) & ~((1 << (n)) - 1))
42
43#define CONVERT_TO_SHORTPTR(x) ((uint16_t *)(((uintptr_t)(x)) << 1))
44#define CAST_TO_SHORTPTR(x) ((uint16_t *)((uintptr_t)(x)))
45#if CONFIG_VP9_HIGHBITDEPTH
46#define CONVERT_TO_BYTEPTR(x) ((uint8_t *)(((uintptr_t)(x)) >> 1))
47#define CAST_TO_BYTEPTR(x) ((uint8_t *)((uintptr_t)(x)))
48#endif  // CONFIG_VP9_HIGHBITDEPTH
49
50#if !defined(__has_feature)
51#define __has_feature(x) 0
52#endif  // !defined(__has_feature)
53
54#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
55#define VPX_WITH_ASAN 1
56#else
57#define VPX_WITH_ASAN 0
58#endif  // __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
59
60#endif  // VPX_PORTS_MEM_H_
61