DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169
/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef VPX_PORTS_MEM_OPS_ALIGNED_H_
#define VPX_PORTS_MEM_OPS_ALIGNED_H_

#include "vpx/vpx_integer.h"

/* \file
 * \brief Provides portable memory access primitives for operating on aligned
 *        data
 *
 * This file is split from mem_ops.h for easier maintenance. See mem_ops.h
 * for a more detailed description of these primitives.
 */
#ifndef INCLUDED_BY_MEM_OPS_H
#error Include mem_ops.h, not mem_ops_aligned.h directly.
#endif

/* Architectures that provide instructions for doing this byte swapping
 * could redefine these macros.
 */
#define swap_endian_16(val,raw) do {\
    val = ((raw>>8) & 0x00ff) \
          | ((raw<<8) & 0xff00);\
  } while(0)
#define swap_endian_32(val,raw) do {\
    val = ((raw>>24) & 0x000000ff) \
          | ((raw>>8)  & 0x0000ff00) \
          | ((raw<<8)  & 0x00ff0000) \
          | ((raw<<24) & 0xff000000); \
  } while(0)
#define swap_endian_16_se(val,raw) do {\
    swap_endian_16(val,raw);\
    val = ((val << 16) >> 16);\
  } while(0)
#define swap_endian_32_se(val,raw) swap_endian_32(val,raw)

#define mem_get_ne_aligned_generic(end,sz) \
  static VPX_INLINE unsigned MEM_VALUE_T \
    mem_get_##end##sz##_aligned(const void *vmem) {\
    const uint##sz##_t *mem = (const uint##sz##_t *)vmem;\
    return *mem;\
  }

#define mem_get_sne_aligned_generic(end,sz) \
  static VPX_INLINE signed MEM_VALUE_T \
    mem_get_s##end##sz##_aligned(const void *vmem) {\
    const int##sz##_t *mem = (const int##sz##_t *)vmem;\
    return *mem;\
  }

#define mem_get_se_aligned_generic(end,sz) \
  static VPX_INLINE unsigned MEM_VALUE_T \
    mem_get_##end##sz##_aligned(const void *vmem) {\
    const uint##sz##_t *mem = (const uint##sz##_t *)vmem;\
    unsigned MEM_VALUE_T val, raw = *mem;\
    swap_endian_##sz(val,raw);\
    return val;\
  }

#define mem_get_sse_aligned_generic(end,sz) \
  static VPX_INLINE signed MEM_VALUE_T \
    mem_get_s##end##sz##_aligned(const void *vmem) {\
    const int##sz##_t *mem = (const int##sz##_t *)vmem;\
    unsigned MEM_VALUE_T val, raw = *mem;\
    swap_endian_##sz##_se(val,raw);\
    return val;\
  }

#define mem_put_ne_aligned_generic(end,sz) \
  static VPX_INLINE void \
    mem_put_##end##sz##_aligned(void *vmem, MEM_VALUE_T val) {\
    uint##sz##_t *mem = (uint##sz##_t *)vmem;\
    *mem = (uint##sz##_t)val;\
  }

#define mem_put_se_aligned_generic(end,sz) \
  static VPX_INLINE void \
    mem_put_##end##sz##_aligned(void *vmem, MEM_VALUE_T val) {\
    uint##sz##_t *mem = (uint##sz##_t *)vmem, raw;\
    swap_endian_##sz(raw,val);\
    *mem = (uint##sz##_t)raw;\
  }

#include "vpx_config.h"
#if CONFIG_BIG_ENDIAN
#define mem_get_be_aligned_generic(sz)  mem_get_ne_aligned_generic(be,sz)
#define mem_get_sbe_aligned_generic(sz) mem_get_sne_aligned_generic(be,sz)
#define mem_get_le_aligned_generic(sz)  mem_get_se_aligned_generic(le,sz)
#define mem_get_sle_aligned_generic(sz) mem_get_sse_aligned_generic(le,sz)
#define mem_put_be_aligned_generic(sz)  mem_put_ne_aligned_generic(be,sz)
#define mem_put_le_aligned_generic(sz)  mem_put_se_aligned_generic(le,sz)
#else
#define mem_get_be_aligned_generic(sz)  mem_get_se_aligned_generic(be,sz)
#define mem_get_sbe_aligned_generic(sz) mem_get_sse_aligned_generic(be,sz)
#define mem_get_le_aligned_generic(sz)  mem_get_ne_aligned_generic(le,sz)
#define mem_get_sle_aligned_generic(sz) mem_get_sne_aligned_generic(le,sz)
#define mem_put_be_aligned_generic(sz)  mem_put_se_aligned_generic(be,sz)
#define mem_put_le_aligned_generic(sz)  mem_put_ne_aligned_generic(le,sz)
#endif

#undef  mem_get_be16_aligned
#define mem_get_be16_aligned mem_ops_wrap_symbol(mem_get_be16_aligned)
mem_get_be_aligned_generic(16)

#undef  mem_get_be32_aligned
#define mem_get_be32_aligned mem_ops_wrap_symbol(mem_get_be32_aligned)
mem_get_be_aligned_generic(32)

#undef  mem_get_le16_aligned
#define mem_get_le16_aligned mem_ops_wrap_symbol(mem_get_le16_aligned)
mem_get_le_aligned_generic(16)

#undef  mem_get_le32_aligned
#define mem_get_le32_aligned mem_ops_wrap_symbol(mem_get_le32_aligned)
mem_get_le_aligned_generic(32)

#undef  mem_get_sbe16_aligned
#define mem_get_sbe16_aligned mem_ops_wrap_symbol(mem_get_sbe16_aligned)
mem_get_sbe_aligned_generic(16)

#undef  mem_get_sbe32_aligned
#define mem_get_sbe32_aligned mem_ops_wrap_symbol(mem_get_sbe32_aligned)
mem_get_sbe_aligned_generic(32)

#undef  mem_get_sle16_aligned
#define mem_get_sle16_aligned mem_ops_wrap_symbol(mem_get_sle16_aligned)
mem_get_sle_aligned_generic(16)

#undef  mem_get_sle32_aligned
#define mem_get_sle32_aligned mem_ops_wrap_symbol(mem_get_sle32_aligned)
mem_get_sle_aligned_generic(32)

#undef  mem_put_be16_aligned
#define mem_put_be16_aligned mem_ops_wrap_symbol(mem_put_be16_aligned)
mem_put_be_aligned_generic(16)

#undef  mem_put_be32_aligned
#define mem_put_be32_aligned mem_ops_wrap_symbol(mem_put_be32_aligned)
mem_put_be_aligned_generic(32)

#undef  mem_put_le16_aligned
#define mem_put_le16_aligned mem_ops_wrap_symbol(mem_put_le16_aligned)
mem_put_le_aligned_generic(16)

#undef  mem_put_le32_aligned
#define mem_put_le32_aligned mem_ops_wrap_symbol(mem_put_le32_aligned)
mem_put_le_aligned_generic(32)

#undef mem_get_ne_aligned_generic
#undef mem_get_se_aligned_generic
#undef mem_get_sne_aligned_generic
#undef mem_get_sse_aligned_generic
#undef mem_put_ne_aligned_generic
#undef mem_put_se_aligned_generic
#undef swap_endian_16
#undef swap_endian_32
#undef swap_endian_16_se
#undef swap_endian_32_se

#endif  // VPX_PORTS_MEM_OPS_ALIGNED_H_