| /* |
| * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| |
| #ifndef VPX_PORTS_MEM_H_ |
| #define VPX_PORTS_MEM_H_ |
| |
| #include "vpx_config.h" |
| #include "vpx/vpx_integer.h" |
| |
| #if (defined(__GNUC__) && __GNUC__) || defined(__SUNPRO_C) |
| #define DECLARE_ALIGNED(n,typ,val) typ val __attribute__ ((aligned (n))) |
| #elif defined(_MSC_VER) |
| #define DECLARE_ALIGNED(n,typ,val) __declspec(align(n)) typ val |
| #else |
| #warning No alignment directives known for this compiler. |
| #define DECLARE_ALIGNED(n,typ,val) typ val |
| #endif |
| |
| /* Indicates that the usage of the specified variable has been audited to assure |
| * that it's safe to use uninitialized. Silences 'may be used uninitialized' |
| * warnings on gcc. |
| */ |
| #if defined(__GNUC__) && __GNUC__ |
| #define UNINITIALIZED_IS_SAFE(x) x=x |
| #else |
| #define UNINITIALIZED_IS_SAFE(x) x |
| #endif |
| |
| #if HAVE_NEON && defined(_MSC_VER) |
| #define __builtin_prefetch(x) |
| #endif |
| |
| /* Shift down with rounding */ |
| #define ROUND_POWER_OF_TWO(value, n) \ |
| (((value) + (1 << ((n) - 1))) >> (n)) |
| |
| #define ALIGN_POWER_OF_TWO(value, n) \ |
| (((value) + ((1 << (n)) - 1)) & ~((1 << (n)) - 1)) |
| |
| #if CONFIG_VP9_HIGHBITDEPTH |
| #define CONVERT_TO_SHORTPTR(x) ((uint16_t*)(((uintptr_t)x) << 1)) |
| #define CONVERT_TO_BYTEPTR(x) ((uint8_t*)(((uintptr_t)x) >> 1)) |
| #endif // CONFIG_VP9_HIGHBITDEPTH |
| |
| #endif // VPX_PORTS_MEM_H_ |
