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