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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/aom_ports/mem.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/third_party/aom/aom_ports/mem.h b/third_party/aom/aom_ports/mem.h new file mode 100644 index 0000000000..a70ce825b1 --- /dev/null +++ b/third_party/aom/aom_ports/mem.h @@ -0,0 +1,102 @@ +/* + * 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__) && __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 + +#if HAVE_NEON && defined(_MSC_VER) +#define __builtin_prefetch(x) +#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) (((value) + (((1 << (n)) >> 1))) >> (n)) + +/* Shift down with rounding for signed integers, for use when n >= 0 */ +#define ROUND_POWER_OF_TWO_SIGNED(value, n) \ + (((value) < 0) ? -ROUND_POWER_OF_TWO(-(value), (n)) \ + : ROUND_POWER_OF_TWO((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) \ + (((value) + ((((int64_t)1 << (n)) >> 1))) >> (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) \ + (((value) < 0) ? -ROUND_POWER_OF_TWO_64(-(value), (n)) \ + : ROUND_POWER_OF_TWO_64((value), (n))) + +/* Shift down with ceil() for use when n >= 0 and value >= 0.*/ +#define CEIL_POWER_OF_TWO(value, n) (((value) + (1 << (n)) - 1) >> (n)) + +/* shift right or left depending on sign of n */ +#define RIGHT_SIGNED_SHIFT(value, n) \ + ((n) < 0 ? ((value) << (-(n))) : ((value) >> (n))) + +#define ALIGN_POWER_OF_TWO(value, n) \ + (((value) + ((1 << (n)) - 1)) & ~((1 << (n)) - 1)) +#define ALIGN_POWER_OF_TWO_UNSIGNED(value, n) \ + (((value) + ((1u << (n)) - 1)) & ~((1u << (n)) - 1)) + +#define DIVIDE_AND_ROUND(x, y) (((x) + ((y) >> 1)) / (y)) + +#define CONVERT_TO_SHORTPTR(x) ((uint16_t *)(((uintptr_t)(x)) << 1)) +#define CONVERT_TO_BYTEPTR(x) ((uint8_t *)(((uintptr_t)(x)) >> 1)) + +/*!\brief force enum to be unsigned 1 byte*/ +#define UENUM1BYTE(enumvar) \ + ; \ + typedef uint8_t enumvar + +/*!\brief force enum to be signed 1 byte*/ +#define SENUM1BYTE(enumvar) \ + ; \ + typedef int8_t enumvar + +/*!\brief force enum to be unsigned 2 byte*/ +#define UENUM2BYTE(enumvar) \ + ; \ + typedef uint16_t enumvar + +/*!\brief force enum to be signed 2 byte*/ +#define SENUM2BYTE(enumvar) \ + ; \ + typedef int16_t enumvar + +/*!\brief force enum to be unsigned 4 byte*/ +#define UENUM4BYTE(enumvar) \ + ; \ + typedef uint32_t enumvar + +/*!\brief force enum to be unsigned 4 byte*/ +#define SENUM4BYTE(enumvar) \ + ; \ + typedef int32_t enumvar + +#endif // AOM_AOM_PORTS_MEM_H_ |