1/* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11#ifndef VPX_PORTS_MEM_OPS_ALIGNED_H_ 12#define VPX_PORTS_MEM_OPS_ALIGNED_H_ 13 14#include "vpx/vpx_integer.h" 15 16/* \file 17 * \brief Provides portable memory access primitives for operating on aligned 18 * data 19 * 20 * This file is split from mem_ops.h for easier maintenance. See mem_ops.h 21 * for a more detailed description of these primitives. 22 */ 23#ifndef INCLUDED_BY_MEM_OPS_H 24#error Include mem_ops.h, not mem_ops_aligned.h directly. 25#endif 26 27/* Architectures that provide instructions for doing this byte swapping 28 * could redefine these macros. 29 */ 30#define swap_endian_16(val,raw) do {\ 31 val = ((raw>>8) & 0x00ff) \ 32 | ((raw<<8) & 0xff00);\ 33 } while(0) 34#define swap_endian_32(val,raw) do {\ 35 val = ((raw>>24) & 0x000000ff) \ 36 | ((raw>>8) & 0x0000ff00) \ 37 | ((raw<<8) & 0x00ff0000) \ 38 | ((raw<<24) & 0xff000000); \ 39 } while(0) 40#define swap_endian_16_se(val,raw) do {\ 41 swap_endian_16(val,raw);\ 42 val = ((val << 16) >> 16);\ 43 } while(0) 44#define swap_endian_32_se(val,raw) swap_endian_32(val,raw) 45 46#define mem_get_ne_aligned_generic(end,sz) \ 47 static VPX_INLINE unsigned MEM_VALUE_T \ 48 mem_get_##end##sz##_aligned(const void *vmem) {\ 49 const uint##sz##_t *mem = (const uint##sz##_t *)vmem;\ 50 return *mem;\ 51 } 52 53#define mem_get_sne_aligned_generic(end,sz) \ 54 static VPX_INLINE signed MEM_VALUE_T \ 55 mem_get_s##end##sz##_aligned(const void *vmem) {\ 56 const int##sz##_t *mem = (const int##sz##_t *)vmem;\ 57 return *mem;\ 58 } 59 60#define mem_get_se_aligned_generic(end,sz) \ 61 static VPX_INLINE unsigned MEM_VALUE_T \ 62 mem_get_##end##sz##_aligned(const void *vmem) {\ 63 const uint##sz##_t *mem = (const uint##sz##_t *)vmem;\ 64 unsigned MEM_VALUE_T val, raw = *mem;\ 65 swap_endian_##sz(val,raw);\ 66 return val;\ 67 } 68 69#define mem_get_sse_aligned_generic(end,sz) \ 70 static VPX_INLINE signed MEM_VALUE_T \ 71 mem_get_s##end##sz##_aligned(const void *vmem) {\ 72 const int##sz##_t *mem = (const int##sz##_t *)vmem;\ 73 unsigned MEM_VALUE_T val, raw = *mem;\ 74 swap_endian_##sz##_se(val,raw);\ 75 return val;\ 76 } 77 78#define mem_put_ne_aligned_generic(end,sz) \ 79 static VPX_INLINE void \ 80 mem_put_##end##sz##_aligned(void *vmem, MEM_VALUE_T val) {\ 81 uint##sz##_t *mem = (uint##sz##_t *)vmem;\ 82 *mem = (uint##sz##_t)val;\ 83 } 84 85#define mem_put_se_aligned_generic(end,sz) \ 86 static VPX_INLINE void \ 87 mem_put_##end##sz##_aligned(void *vmem, MEM_VALUE_T val) {\ 88 uint##sz##_t *mem = (uint##sz##_t *)vmem, raw;\ 89 swap_endian_##sz(raw,val);\ 90 *mem = (uint##sz##_t)raw;\ 91 } 92 93#include "vpx_config.h" 94#if CONFIG_BIG_ENDIAN 95#define mem_get_be_aligned_generic(sz) mem_get_ne_aligned_generic(be,sz) 96#define mem_get_sbe_aligned_generic(sz) mem_get_sne_aligned_generic(be,sz) 97#define mem_get_le_aligned_generic(sz) mem_get_se_aligned_generic(le,sz) 98#define mem_get_sle_aligned_generic(sz) mem_get_sse_aligned_generic(le,sz) 99#define mem_put_be_aligned_generic(sz) mem_put_ne_aligned_generic(be,sz) 100#define mem_put_le_aligned_generic(sz) mem_put_se_aligned_generic(le,sz) 101#else 102#define mem_get_be_aligned_generic(sz) mem_get_se_aligned_generic(be,sz) 103#define mem_get_sbe_aligned_generic(sz) mem_get_sse_aligned_generic(be,sz) 104#define mem_get_le_aligned_generic(sz) mem_get_ne_aligned_generic(le,sz) 105#define mem_get_sle_aligned_generic(sz) mem_get_sne_aligned_generic(le,sz) 106#define mem_put_be_aligned_generic(sz) mem_put_se_aligned_generic(be,sz) 107#define mem_put_le_aligned_generic(sz) mem_put_ne_aligned_generic(le,sz) 108#endif 109 110#undef mem_get_be16_aligned 111#define mem_get_be16_aligned mem_ops_wrap_symbol(mem_get_be16_aligned) 112mem_get_be_aligned_generic(16) 113 114#undef mem_get_be32_aligned 115#define mem_get_be32_aligned mem_ops_wrap_symbol(mem_get_be32_aligned) 116mem_get_be_aligned_generic(32) 117 118#undef mem_get_le16_aligned 119#define mem_get_le16_aligned mem_ops_wrap_symbol(mem_get_le16_aligned) 120mem_get_le_aligned_generic(16) 121 122#undef mem_get_le32_aligned 123#define mem_get_le32_aligned mem_ops_wrap_symbol(mem_get_le32_aligned) 124mem_get_le_aligned_generic(32) 125 126#undef mem_get_sbe16_aligned 127#define mem_get_sbe16_aligned mem_ops_wrap_symbol(mem_get_sbe16_aligned) 128mem_get_sbe_aligned_generic(16) 129 130#undef mem_get_sbe32_aligned 131#define mem_get_sbe32_aligned mem_ops_wrap_symbol(mem_get_sbe32_aligned) 132mem_get_sbe_aligned_generic(32) 133 134#undef mem_get_sle16_aligned 135#define mem_get_sle16_aligned mem_ops_wrap_symbol(mem_get_sle16_aligned) 136mem_get_sle_aligned_generic(16) 137 138#undef mem_get_sle32_aligned 139#define mem_get_sle32_aligned mem_ops_wrap_symbol(mem_get_sle32_aligned) 140mem_get_sle_aligned_generic(32) 141 142#undef mem_put_be16_aligned 143#define mem_put_be16_aligned mem_ops_wrap_symbol(mem_put_be16_aligned) 144mem_put_be_aligned_generic(16) 145 146#undef mem_put_be32_aligned 147#define mem_put_be32_aligned mem_ops_wrap_symbol(mem_put_be32_aligned) 148mem_put_be_aligned_generic(32) 149 150#undef mem_put_le16_aligned 151#define mem_put_le16_aligned mem_ops_wrap_symbol(mem_put_le16_aligned) 152mem_put_le_aligned_generic(16) 153 154#undef mem_put_le32_aligned 155#define mem_put_le32_aligned mem_ops_wrap_symbol(mem_put_le32_aligned) 156mem_put_le_aligned_generic(32) 157 158#undef mem_get_ne_aligned_generic 159#undef mem_get_se_aligned_generic 160#undef mem_get_sne_aligned_generic 161#undef mem_get_sse_aligned_generic 162#undef mem_put_ne_aligned_generic 163#undef mem_put_se_aligned_generic 164#undef swap_endian_16 165#undef swap_endian_32 166#undef swap_endian_16_se 167#undef swap_endian_32_se 168 169#endif // VPX_PORTS_MEM_OPS_ALIGNED_H_ 170