chromium/third_party/libaom/source/libaom/aom_ports/mem.h

/*
 * 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.
 */

#ifndef AOM_AOM_PORTS_MEM_H_
#define AOM_AOM_PORTS_MEM_H_

#include "aom/aom_integer.h"
#include "config/aom_config.h"

#if defined(__GNUC__) || defined(__SUNPRO_C)
#define DECLARE_ALIGNED(n, typ, val)
#elif defined(_MSC_VER)
#define DECLARE_ALIGNED
#else
#warning No alignment directives known for this compiler.
#define DECLARE_ALIGNED
#endif

#if defined(__has_builtin)
#define AOM_HAS_BUILTIN(x)
#else
#define AOM_HAS_BUILTIN
#endif

#if !AOM_HAS_BUILTIN(__builtin_prefetch) && !defined(__GNUC__)
#define __builtin_prefetch
#endif

/* Shift down with rounding for use when n >= 0. Usually value >= 0, but the
 * macro can be used with a negative value if the direction of rounding is
 * acceptable.
 */
#define ROUND_POWER_OF_TWO(value, n)

/* Shift down with rounding for signed integers, for use when n >= 0 */
#define ROUND_POWER_OF_TWO_SIGNED(value, n)

/* Shift down with rounding for use when n >= 0 (64-bit value). Usually
 * value >= 0, but the macro can be used with a negative value if the direction
 * of rounding is acceptable.
 */
#define ROUND_POWER_OF_TWO_64(value, n)
/* Shift down with rounding for signed integers, for use when n >= 0 (64-bit
 * value)
 */
#define ROUND_POWER_OF_TWO_SIGNED_64(value, n)

/* Shift down with ceil() for use when n >= 0 and value >= 0.*/
#define CEIL_POWER_OF_TWO(value, n)

/* shift right or left depending on sign of n */
#define RIGHT_SIGNED_SHIFT(value, n)

#define ALIGN_POWER_OF_TWO(value, n)
#define ALIGN_POWER_OF_TWO_UNSIGNED(value, n)

#define DIVIDE_AND_ROUND(x, y)

#define CONVERT_TO_SHORTPTR(x)
#define CONVERT_TO_BYTEPTR(x)

/*!\brief force enum to be unsigned 1 byte*/
#define UENUM1BYTE(enumvar)

/*!\brief force enum to be signed 1 byte*/
#define SENUM1BYTE(enumvar)

/*!\brief force enum to be unsigned 2 byte*/
#define UENUM2BYTE(enumvar)

/*!\brief force enum to be signed 2 byte*/
#define SENUM2BYTE(enumvar)

/*!\brief force enum to be unsigned 4 byte*/
#define UENUM4BYTE(enumvar)

/*!\brief force enum to be unsigned 4 byte*/
#define SENUM4BYTE(enumvar)

#endif  // AOM_AOM_PORTS_MEM_H_