From 68569dee1416593955c1570d638b3d9250b33012 Mon Sep 17 00:00:00 2001 From: trav90 Date: Mon, 15 Oct 2018 21:45:30 -0500 Subject: Import aom library This is the reference implementation for the Alliance for Open Media's av1 video code. The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36. --- third_party/aom/aom_ports/mem.h | 65 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 third_party/aom/aom_ports/mem.h (limited to 'third_party/aom/aom_ports/mem.h') diff --git a/third_party/aom/aom_ports/mem.h b/third_party/aom/aom_ports/mem.h new file mode 100644 index 000000000..bd881cdc8 --- /dev/null +++ b/third_party/aom/aom_ports/mem.h @@ -0,0 +1,65 @@ +/* + * 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_PORTS_MEM_H_ +#define AOM_PORTS_MEM_H_ + +#include "aom_config.h" +#include "aom/aom_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 for use when n >= 0, value >= 0 */ +#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, value >= 0 for (64 bit) */ +#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) */ +#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))) + +#define ALIGN_POWER_OF_TWO(value, n) \ + (((value) + ((1 << (n)) - 1)) & ~((1 << (n)) - 1)) + +#define CONVERT_TO_SHORTPTR(x) ((uint16_t *)(((uintptr_t)(x)) << 1)) +#if CONFIG_HIGHBITDEPTH +#define CONVERT_TO_BYTEPTR(x) ((uint8_t *)(((uintptr_t)(x)) >> 1)) +#endif // CONFIG_HIGHBITDEPTH + +#endif // AOM_PORTS_MEM_H_ -- cgit v1.2.3